PMID-sentid Pub_year Sent_text comp_official_name comp_offset protein_name organism prot_offset 2623195-1 1989 Both [Leu]enkephalin and DPen2-[DPen5]enkephalin, a delta opioid receptor selective analog of [Leu]enkephalin, impaired acquisition of an automated shelf-jump response in rats. Leucine 6-9 proenkephalin Rattus norvegicus 10-20 2560809-4 1989 In the present report we demonstrate that the 1400-nt proenkephalin transcript is present in a freshly isolated, enriched preparation of adult rat Leydig cells. nt 12-14 proenkephalin Rattus norvegicus 54-67 2560809-6 1989 Treatment of cultured Leydig cells with hCG or a cAMP analog leads to a rapid increase in proenkephalin-mRNA levels. Cyclic AMP 49-53 proenkephalin Rattus norvegicus 90-103 2623195-4 1989 These results, together with our previous findings that DPen2-[DPen5]enkephalin and [Leu]enkephalin both impair acquisition of a one-way active avoidance response in mice, and that [Leu]enkephalin impairs acquisition of that same response in rats, support our suggestion that delta opioid receptors are implicated in the effects of [Leu]enkephalin on conditioning. Leucine 85-88 proenkephalin Rattus norvegicus 89-99 2623195-4 1989 These results, together with our previous findings that DPen2-[DPen5]enkephalin and [Leu]enkephalin both impair acquisition of a one-way active avoidance response in mice, and that [Leu]enkephalin impairs acquisition of that same response in rats, support our suggestion that delta opioid receptors are implicated in the effects of [Leu]enkephalin on conditioning. Leucine 85-88 proenkephalin Rattus norvegicus 89-99 2623195-4 1989 These results, together with our previous findings that DPen2-[DPen5]enkephalin and [Leu]enkephalin both impair acquisition of a one-way active avoidance response in mice, and that [Leu]enkephalin impairs acquisition of that same response in rats, support our suggestion that delta opioid receptors are implicated in the effects of [Leu]enkephalin on conditioning. Leucine 85-88 proenkephalin Rattus norvegicus 89-99 2478598-9 1989 The heavily and moderately labeled enkephalin areas each maintain specific relations with inhomogeneities in the distribution of substance P, dopamine, and calcium-binding protein. Dopamine 142-150 proenkephalin Rattus norvegicus 35-45 2478598-9 1989 The heavily and moderately labeled enkephalin areas each maintain specific relations with inhomogeneities in the distribution of substance P, dopamine, and calcium-binding protein. Calcium 156-163 proenkephalin Rattus norvegicus 35-45 2478598-10 1989 Rostrally, the heavily labeled enkephalin areas coincide with areas strongly immunostained for calcium-binding protein and with lightly stained areas in the dopamine and substance P immunoreactivity patterns. Calcium 95-102 proenkephalin Rattus norvegicus 31-41 2478598-10 1989 Rostrally, the heavily labeled enkephalin areas coincide with areas strongly immunostained for calcium-binding protein and with lightly stained areas in the dopamine and substance P immunoreactivity patterns. Dopamine 157-165 proenkephalin Rattus norvegicus 31-41 2478598-12 1989 Caudally, in the border region of the nucleus accumbens and the caudate-putamen, the heavily labeled enkephalin areas are either related to "blanks" or to the intense staining regions in the calcium-binding protein immunoreactivity distribution. Calcium 191-198 proenkephalin Rattus norvegicus 101-111 2478598-13 1989 The moderately labeled enkephalin areas caudomedially in the nucleus accumbens are in register with the heavily labeled regions in the distribution of substance P and with the extremely heavily labeled regions in the distribution of dopamine. Dopamine 233-241 proenkephalin Rattus norvegicus 23-33 2641847-3 1989 In the present study, the mechanism of the production of EK enhanced by BK was investigated using benzoyl-L-arginine-2-naphthylamide (BANA), a synthetic substrate. benzoyl-l-arginine-2-naphthylamide 98-132 proenkephalin Rattus norvegicus 57-59 2553917-2 1989 Morphine treatment resulted in a decrease in the maximal excitation produced by both mu and delta selective agonists, [N-MePhe3,D-Pro4]-morphiceptin and [D-Pen2,L-Pen5]-enkephalin. Morphine 0-8 proenkephalin Rattus norvegicus 169-179 2592517-1 1989 Preliminary results on the determination of leucine- and methionine-enkephalin-like fluorescence in the striatum region of the rat brain. Methionine 57-67 proenkephalin Rattus norvegicus 68-78 2592517-2 1989 The reversed-phase high-performance liquid chromatography of three synthetic opioid peptides, 5leucine-enkephalin, 5methionine-enkephalin and [D-2alanine]-5methionine enkephalin, has been studied after their pre-column fluorogenic derivatization with naphthalene-2,3-dicarboxaldehyde in the presence of cyanide to the corresponding 1-cyanobenz[f]isoindole (CBI) derivatives. 5methionine 115-126 proenkephalin Rattus norvegicus 127-137 2592517-2 1989 The reversed-phase high-performance liquid chromatography of three synthetic opioid peptides, 5leucine-enkephalin, 5methionine-enkephalin and [D-2alanine]-5methionine enkephalin, has been studied after their pre-column fluorogenic derivatization with naphthalene-2,3-dicarboxaldehyde in the presence of cyanide to the corresponding 1-cyanobenz[f]isoindole (CBI) derivatives. 5methionine 115-126 proenkephalin Rattus norvegicus 127-137 2592517-8 1989 The method has been applied to the determination of leucine- and methionine-enkephalin-like fluorescence in the striatum of the rat brain. Methionine 65-75 proenkephalin Rattus norvegicus 76-86 2561530-1 1989 The N-terminal tripeptide enkephalin analogue, Tyr-D-Ala-Gly, was dimerized at the C-terminus systematically with a series of alpha,omega-diaminoalkanes, NH2-(CH2)n-NH2 (n = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22). tyr-d-ala-gly 47-60 proenkephalin Rattus norvegicus 26-36 2561530-1 1989 The N-terminal tripeptide enkephalin analogue, Tyr-D-Ala-Gly, was dimerized at the C-terminus systematically with a series of alpha,omega-diaminoalkanes, NH2-(CH2)n-NH2 (n = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22). alpha,omega-diaminoalkanes 126-152 proenkephalin Rattus norvegicus 26-36 2572306-1 1989 The highly mu-selective agonist Tyr-D-Ala-Gly-MePhe-Gly-ol-enkephalin (DAGO) produces potent, dose-dependent naloxone-reversible antinociception when microinjected into the ventrolateral periaqueductal gray (PAG) (ED50 = 0.72 nmol) or rostral ventromedial medulla (RVM) (ED50 = 0.05 nmol) as measured on the rat tail flick (TF) assay. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 71-75 proenkephalin Rattus norvegicus 59-69 2641847-3 1989 In the present study, the mechanism of the production of EK enhanced by BK was investigated using benzoyl-L-arginine-2-naphthylamide (BANA), a synthetic substrate. bana 134-138 proenkephalin Rattus norvegicus 57-59 2641847-9 1989 It is suggested that BK is cleft by carboxypeptidase B in pulp cell to des-Arg9-BK and Arg, which activate the lysosomal or soluble EK processing enzymes, and then the produced EK inhibits the production of BK from plasma kininogens in the pulp. Arginine 75-78 proenkephalin Rattus norvegicus 132-134 2572306-1 1989 The highly mu-selective agonist Tyr-D-Ala-Gly-MePhe-Gly-ol-enkephalin (DAGO) produces potent, dose-dependent naloxone-reversible antinociception when microinjected into the ventrolateral periaqueductal gray (PAG) (ED50 = 0.72 nmol) or rostral ventromedial medulla (RVM) (ED50 = 0.05 nmol) as measured on the rat tail flick (TF) assay. Naloxone 109-117 proenkephalin Rattus norvegicus 59-69 2641847-9 1989 It is suggested that BK is cleft by carboxypeptidase B in pulp cell to des-Arg9-BK and Arg, which activate the lysosomal or soluble EK processing enzymes, and then the produced EK inhibits the production of BK from plasma kininogens in the pulp. Arginine 75-78 proenkephalin Rattus norvegicus 177-179 2571623-3 1989 Subpopulations of neurons in colchicine-treated major pelvic ganglia and accessory ganglia of male rats contained immunoreactivity (IR) for tyrosine hydroxylase (TH), vasoactive intestinal peptide (VIP), neuropeptide Y (NPY), or enkephalin (ENK), while types of immunoreactivity found in major groups of varicose axons were ENK, cholecystokinin (CCK), and somatostatin (SOM). Colchicine 29-39 proenkephalin Rattus norvegicus 324-327 2571623-3 1989 Subpopulations of neurons in colchicine-treated major pelvic ganglia and accessory ganglia of male rats contained immunoreactivity (IR) for tyrosine hydroxylase (TH), vasoactive intestinal peptide (VIP), neuropeptide Y (NPY), or enkephalin (ENK), while types of immunoreactivity found in major groups of varicose axons were ENK, cholecystokinin (CCK), and somatostatin (SOM). Colchicine 29-39 proenkephalin Rattus norvegicus 229-239 2571623-3 1989 Subpopulations of neurons in colchicine-treated major pelvic ganglia and accessory ganglia of male rats contained immunoreactivity (IR) for tyrosine hydroxylase (TH), vasoactive intestinal peptide (VIP), neuropeptide Y (NPY), or enkephalin (ENK), while types of immunoreactivity found in major groups of varicose axons were ENK, cholecystokinin (CCK), and somatostatin (SOM). Colchicine 29-39 proenkephalin Rattus norvegicus 241-244 2584346-1 1989 A method is described for the determination of two pentapeptides, methionine enkephalin (H-Tyr-Gly-Gly-Phe-Met-OH) (ME) and leucine enkephalin (H-Tyr-Gly-Gly-Phe-Leu-OH) (LE) in discrete rat brain regions. Enkephalin, Methionine 89-113 proenkephalin Rattus norvegicus 77-87 2590840-1 1989 The distribution of enkephalin-like cell bodies in the thalamus of the rat was studied by means of intratissular injections of colchicine and using an indirect immunoperoxidase technique. Colchicine 127-137 proenkephalin Rattus norvegicus 20-30 2479438-16 1989 was depressed by [Met5] enkephalin (0.1-1 microM), dynorphin (1-13)(0.2 microM) and morphine (1-2 microM), and these effects were reversed by naloxone (1 microM). Naloxone 142-150 proenkephalin Rattus norvegicus 24-34 2606149-1 1989 Perfusion of the intrathecal space of halothane-anaesthetized rats with artificial cerebro-spinal fluid supplemented with porcine calcitonin (1-10 microM) produced a significant increase (+67-110%) in the spinal release of [Met5]enkephalin-like material. Halothane 38-47 proenkephalin Rattus norvegicus 229-239 2790459-0 1989 Potent antinociceptive effects of kelatorphan (a highly efficient inhibitor of multiple enkephalin-degrading enzymes) systemically administered in normal and arthritic rats. kelatorphan 34-45 proenkephalin Rattus norvegicus 88-98 2790459-2 1989 doses (2.5, 5, 10 and 15 mg/kg) of the highly efficient inhibitor of multiple enkephalin-degrading enzymes, Kelatorphan, were evaluated on the vocalization threshold to paw pressure in normal rats and in rats with Freund"s adjuvant-induced arthritis. kelatorphan 108-119 proenkephalin Rattus norvegicus 78-88 2806377-0 1989 Studies on the effect of SCH-34826 and thiorphan on [Met5]enkephalin levels and release in rat spinal cord. Thiorphan 39-48 proenkephalin Rattus norvegicus 58-68 2549472-2 1989 Haloperidol treatment (2 mg/kg/day, i.p., 3 weeks), which has been reported to increase enkephalin levels in the striatum, induced a 23% decrease in striatal (posterior level A= +8.4-8.6 mm) NEP labeling (but no change of mu- and delta-sites). Haloperidol 0-11 proenkephalin Rattus norvegicus 88-98 2806377-2 1989 3.4.24.11;) that cleaves the opiate peptides [Met5]- and [Leu5]enkephalin at the glycinylphenylalanine bond. glycinylphenylalanine 81-102 proenkephalin Rattus norvegicus 63-73 2806371-1 1989 The reinforcing effects of two enkephalin analogs, Tyr-D-Ala-Gly-MePhe-NHNHCOCH2CH3.AcOH (EK-209) and Tyr-D-Met(O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399), were assessed by means of a self-administration technique with rats. Acetic Acid 84-88 proenkephalin Rattus norvegicus 31-41 2691996-0 1989 Plasma uptake and in vivo metabolism of [Leu]enkephalin following its intraperitoneal administration to rats. Leucine 41-44 proenkephalin Rattus norvegicus 45-55 2807764-2 1989 While ITH CaCl2 was devoid of any effect on the analgesia induced by ITH morphine, it did antagonize the analgesic effect produced by ITH injection of dynorphin A or (D-Pen2,D-Pen5)-enkephalin (DPDPE). Calcium Chloride 10-15 proenkephalin Rattus norvegicus 182-192 2752969-1 1989 The present study was an attempt to assess the inhibitory effect of methionine-enkephalin (Met-Enk) on adrenal catecholamine release under in vivo conditions employing a microdialysis system. Catecholamines 111-124 proenkephalin Rattus norvegicus 95-98 2752969-9 1989 Intra-adrenal application of Met-Enk reduced Ach-stimulated epinephrine, but not norepinephrine, secretion significantly; application of Nal did not affect Ach-stimulated catecholamine secretion in the initial fraction after Ach injection, but significantly prolonged amine secretion after the cholinergic stimulus. Acetylcholine 45-48 proenkephalin Rattus norvegicus 33-36 2752969-9 1989 Intra-adrenal application of Met-Enk reduced Ach-stimulated epinephrine, but not norepinephrine, secretion significantly; application of Nal did not affect Ach-stimulated catecholamine secretion in the initial fraction after Ach injection, but significantly prolonged amine secretion after the cholinergic stimulus. Epinephrine 60-71 proenkephalin Rattus norvegicus 33-36 2752969-11 1989 Thus, naloxone prevented the inhibitory effect of Met-Enk on Ach-stimulated CA release. Naloxone 6-14 proenkephalin Rattus norvegicus 54-57 2752969-11 1989 Thus, naloxone prevented the inhibitory effect of Met-Enk on Ach-stimulated CA release. Acetylcholine 61-64 proenkephalin Rattus norvegicus 54-57 2752969-13 1989 We demonstrate in vivo a paracrine or autocrine action of Met-Enk on Ach-stimulated catecholamine release by applying the peptide directly into the adrenal gland via a microdialysis system. Acetylcholine 69-72 proenkephalin Rattus norvegicus 62-65 2752969-13 1989 We demonstrate in vivo a paracrine or autocrine action of Met-Enk on Ach-stimulated catecholamine release by applying the peptide directly into the adrenal gland via a microdialysis system. Catecholamines 84-97 proenkephalin Rattus norvegicus 62-65 2544164-0 1989 Phorbol ester regulates the abundance of enkephalin precursor mRNA but not of amyloid beta-protein precursor mRNA in rat testicular peritubular cells. Phorbol Esters 0-13 proenkephalin Rattus norvegicus 41-51 2546441-1 1989 The synthetic enkephalin analogue, [D-Ala2]Met-enkephalinamide (DALA) was used to investigate opioid peptide modulation of lacrimal protein secretion. Aminolevulinic Acid 64-68 proenkephalin Rattus norvegicus 14-24 2546441-10 1989 We conclude that DALA exerts an inhibitory modulation of cholinergic and VIPergic stimulation of in vitro lacrimal protein secretion and suggest a physiological role for methionine enkephalin as an inhibitory peptide involved in the regulation of lacrimal gland function. Aminolevulinic Acid 17-21 proenkephalin Rattus norvegicus 181-191 2776828-0 1989 Comparison of selective and complete inhibitors of enkephalin-degrading enzymes on morphine withdrawal syndrome. Morphine 83-91 proenkephalin Rattus norvegicus 51-61 2506943-0 1989 [The action of an enzymatically stable Leu-enkephalin analog on the prostanoid content in the myocardium under stress- and adrenaline-induced damage]. Prostaglandins 68-78 proenkephalin Rattus norvegicus 43-53 2506943-0 1989 [The action of an enzymatically stable Leu-enkephalin analog on the prostanoid content in the myocardium under stress- and adrenaline-induced damage]. Epinephrine 123-133 proenkephalin Rattus norvegicus 43-53 2506943-1 1989 The protective action of enzymatically stable analogue of Leu-enkephalin (D-ala-2-leu5-arg6), injected intraperitoneally, in the course of stress- and epinephrine induced myocardial damage was demonstrated in animal (129 white rats) experiments. d-ala-2-leu5-arg6 74-91 proenkephalin Rattus norvegicus 62-72 2506943-1 1989 The protective action of enzymatically stable analogue of Leu-enkephalin (D-ala-2-leu5-arg6), injected intraperitoneally, in the course of stress- and epinephrine induced myocardial damage was demonstrated in animal (129 white rats) experiments. Epinephrine 151-162 proenkephalin Rattus norvegicus 62-72 2506943-2 1989 Two effect of enkephalin were sufficient for the cardiac protection: enkephalin-stimulated prostacyclin biosynthesis and simultaneous inhibition of thromboxane production. Epoprostenol 91-103 proenkephalin Rattus norvegicus 14-24 2506943-2 1989 Two effect of enkephalin were sufficient for the cardiac protection: enkephalin-stimulated prostacyclin biosynthesis and simultaneous inhibition of thromboxane production. Epoprostenol 91-103 proenkephalin Rattus norvegicus 69-79 2506943-2 1989 Two effect of enkephalin were sufficient for the cardiac protection: enkephalin-stimulated prostacyclin biosynthesis and simultaneous inhibition of thromboxane production. Thromboxanes 148-159 proenkephalin Rattus norvegicus 14-24 2545300-2 1989 Administration in the DR of a selective mu opioid receptor agonist, (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO), in doses ranging from 0.01 to 1 microgram/0.5 microliter, dose-dependently reduced aggression caused by apomorphine 20 mg/kg intraperitoneally. n-me-phe4 76-85 proenkephalin Rattus norvegicus 95-105 2543814-5 1989 In contrast, the purported kappa-opioid receptor agonist bremazocine (3-300 nM) inhibited the stimulated adenylate cyclase activity to a similar extent as did [D-Ala2-MePhe4,Gly-ol5]enkephalin and DPDPE. bremazocine 57-68 proenkephalin Rattus norvegicus 182-192 2785027-2 1989 In control animals the stimulus of ip hypertonic saline resulted in increased plasma levels of corticosterone, oxytocin, and vasopressin and hypothalamic content of CRF and enkephalin mRNA. Sodium Chloride 49-55 proenkephalin Rattus norvegicus 173-183 2574980-4 1989 A moderate number of nerve fibres and neuronal perikarya were immunoreactive to antisera directed against met-enkephalin-arg-phe (cleavage product of proenkephalin) and leu-enkephalin (cleavage product of prodynorphin and proenkephalin); non-identical cell bodies contained met-enkephalin-arg-phe- or leu-enkephalin-immunoreactivity. Phenylalanine 125-128 proenkephalin Rattus norvegicus 150-163 2703483-2 1989 This arginine reacts rapidly with [14C]phenylglyoxal, and its reaction is selectively blocked by the presence of either the substrate Met5-enkephalin, the competitive inhibitor phenylalanylalanine, or the transition state analog phosphoramidon. Arginine 5-13 proenkephalin Rattus norvegicus 139-149 2703483-2 1989 This arginine reacts rapidly with [14C]phenylglyoxal, and its reaction is selectively blocked by the presence of either the substrate Met5-enkephalin, the competitive inhibitor phenylalanylalanine, or the transition state analog phosphoramidon. 14c]phenylglyoxal 35-52 proenkephalin Rattus norvegicus 139-149 2538308-1 1989 A region-specific antiserum raised against the C-terminal heptapeptide of proenkephalin A (Met-enk Arg6Phe7) was used in RIA studies to show that rat, human, and ovine plasma contain substrates (mol wt, 68K) that yield nanomolar amounts of Met-enk Arg6Phe7 (ME-RF) after treatment with pepsin under acid conditions. arg6phe7 99-107 proenkephalin Rattus norvegicus 74-89 2538308-1 1989 A region-specific antiserum raised against the C-terminal heptapeptide of proenkephalin A (Met-enk Arg6Phe7) was used in RIA studies to show that rat, human, and ovine plasma contain substrates (mol wt, 68K) that yield nanomolar amounts of Met-enk Arg6Phe7 (ME-RF) after treatment with pepsin under acid conditions. arg6phe7 248-256 proenkephalin Rattus norvegicus 74-89 2780419-0 1989 Changes in levels of the tripeptide Tyr-Gly-Gly as an index of enkephalin release in the spinal cord: effects of noxious stimuli and parenterally-active peptidase inhibitors. tripeptide K-26 25-35 proenkephalin Rattus norvegicus 63-73 2780419-0 1989 Changes in levels of the tripeptide Tyr-Gly-Gly as an index of enkephalin release in the spinal cord: effects of noxious stimuli and parenterally-active peptidase inhibitors. tyrosyl-glycyl-glycine 36-47 proenkephalin Rattus norvegicus 63-73 2780419-2 1989 During noxious pinching of the muzzle, which is known to trigger enkephalin release, YGG levels were enhanced more markedly and for longer than were those of [Met5]enkephalin (YGGFM), in the same samples. ygg 85-88 proenkephalin Rattus norvegicus 65-75 2703483-8 1989 Similarly the mutant enzyme showed a loss of selectivity in inhibition by D-Ala2-Met5-enkephalin compared to the corresponding amide but exhibited no difference in the maximal velocity for hydrolysis of D-Ala2-Met5-enkephalin and its amide. Amides 127-132 proenkephalin Rattus norvegicus 86-96 2539920-3 1989 We found that all three delta agonists, leu-enkephalin, D-ala-D-leu-enkephalin (DADL), and D-Pen enkephalin, would significantly decrease cardiac output. DADLE 80-84 proenkephalin Rattus norvegicus 68-78 2539920-3 1989 We found that all three delta agonists, leu-enkephalin, D-ala-D-leu-enkephalin (DADL), and D-Pen enkephalin, would significantly decrease cardiac output. DADLE 80-84 proenkephalin Rattus norvegicus 68-78 2574980-4 1989 A moderate number of nerve fibres and neuronal perikarya were immunoreactive to antisera directed against met-enkephalin-arg-phe (cleavage product of proenkephalin) and leu-enkephalin (cleavage product of prodynorphin and proenkephalin); non-identical cell bodies contained met-enkephalin-arg-phe- or leu-enkephalin-immunoreactivity. Enkephalin-met, arg(6)- 106-124 proenkephalin Rattus norvegicus 150-163 2539460-9 1989 Lastly, reversal of effects of [D-Ala2,N-methyl-Phe4,Gly-Ol5]-enkephalin, [D-Pen2,5]-enkephalin and U-50,488H by mu, delta and kappa selective antagonists D-Phe-Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH2, ICI 174,864 and nor-BNI, respectively, indicated that these agents interact with discriminable populations of receptors. n-methyl-phe4 39-52 proenkephalin Rattus norvegicus 62-72 2568443-6 1989 In contrast to the inhibition produced by both morphine and DAGO, methionine enkephalin (8 x 10(-7)-2.4 x 10(-5) M) produced a concentration-dependent contraction of the KCl depolarized uterus. Potassium Chloride 170-173 proenkephalin Rattus norvegicus 77-87 2547203-2 1989 Two examined the in vivo short-term effects (less than 35 min) and two examined the in vivo long-term effects (greater than 2 days) of the synthetic enkephalin analogue, [D-Ala2,Leu5,Cys6]enkephalin (DALCE). leu5, 178-183 proenkephalin Rattus norvegicus 149-159 2740430-3 1989 Met-ENK at a dose of 50 micrograms, injected ICV immediately before stress exposure significantly attenuated stress-induced increases in MHPG-SO4 in the amygdala, thalamus and LC, but did not have such an effect when injected either 5 min or 10 min or 10 min after exposure to stress. 3-methoxy-4-hydroxyphenylglycol sulfate 137-145 proenkephalin Rattus norvegicus 4-7 2787909-1 1989 A series of enkephalin-like peptides (X-Tyr-Gly-Gly-R-Pro) were synthesized for assay of cathepsin L and papain. x-tyr-gly-gly-r-pro 38-57 proenkephalin Rattus norvegicus 12-22 2594580-6 1989 Only [D-2-Nal2,4, Met5-OMe]--enkephalin exerted an analgesic effect after the administration in the form of fine suspension. [d-2-nal2 5-14 proenkephalin Rattus norvegicus 29-39 2469511-11 1989 In this region, about one-third of the GABA-like immunoreactive neurons contained ENK-like immunoreactivity. gamma-Aminobutyric Acid 39-43 proenkephalin Rattus norvegicus 82-85 2545937-1 1989 The present study was carried out to investigate the effects of enkephalins (methionine-enkephalin: Met-Enk, leucine-enkephalin: Leu-Enk) on the adrenergic neurotransmission in hypertension. Methionine 77-87 proenkephalin Rattus norvegicus 64-74 2545937-1 1989 The present study was carried out to investigate the effects of enkephalins (methionine-enkephalin: Met-Enk, leucine-enkephalin: Leu-Enk) on the adrenergic neurotransmission in hypertension. Methionine 77-87 proenkephalin Rattus norvegicus 88-98 2545937-6 1989 These results demonstrate that Met-Enk and Leu-Enk affected presynaptic sites of blood vessels and caused a decrease in electrically-stimulated norepinephrine release from the sympathetic nerve endings. Norepinephrine 144-158 proenkephalin Rattus norvegicus 35-38 2545937-6 1989 These results demonstrate that Met-Enk and Leu-Enk affected presynaptic sites of blood vessels and caused a decrease in electrically-stimulated norepinephrine release from the sympathetic nerve endings. Norepinephrine 144-158 proenkephalin Rattus norvegicus 47-50 2521894-3 1989 These data suggest that D-2 receptors, which mediate a stimulatory effect on enkephalin gene expression, may be subsaturated under basal conditions and, therefore, responsive to increases in synaptic dopamine. Dopamine 200-208 proenkephalin Rattus norvegicus 77-87 2472572-6 1989 In enkephalin-treated animals numerous vasopressin immunoreactive varicosities appeared within the supraoptic nucleus, but were mostly absent in naloxone-treated animals and in controls. Naloxone 145-153 proenkephalin Rattus norvegicus 3-13 2540230-1 1989 Intrathecal dermorphin (0.8-80 ng) or [D-Ala2, D-Leu5]-enkephalin (DADLE, 5.7-171 ng) produced a dose-related marked inhibition of reflex micturition in urethane-anesthetized rats until voiding was suppressed and overflow incontinence ensued. Urethane 153-161 proenkephalin Rattus norvegicus 55-65 2783452-4 1989 The opioid receptor antagonist naloxone (10(-6) M) stimulated Met-ENK release, even in the presence of the Na+ -channel blocker tetrodotoxin (10(-6) M), a result indicating presynaptic opioid feedback inhibition of Met-ENK release. Naloxone 31-39 proenkephalin Rattus norvegicus 66-69 2783452-4 1989 The opioid receptor antagonist naloxone (10(-6) M) stimulated Met-ENK release, even in the presence of the Na+ -channel blocker tetrodotoxin (10(-6) M), a result indicating presynaptic opioid feedback inhibition of Met-ENK release. Naloxone 31-39 proenkephalin Rattus norvegicus 219-222 2783452-5 1989 The role of gonadal steroids in the control of Met-ENK release in vitro was also examined. Steroids 20-28 proenkephalin Rattus norvegicus 51-54 2472572-8 1989 It is likely that steroid hormones mediate the action of enkephalin on vasopressin secretion in a specific manner. Steroids 18-34 proenkephalin Rattus norvegicus 57-67 2539233-2 1989 A saturating concentration of the mu-specific ligand [3H]D-ala2-N-methyl-Phe4,Gly-ol5-enkephalin was used to label sites in slide-mounted sections through one level of the thalamus in rats implanted subcutaneously with morphine pellets for 5 days. Tritium 54-56 proenkephalin Rattus norvegicus 86-96 2540993-0 1989 Chronic administration of morphine and naltrexone up-regulate mu-opioid binding sites labeled by [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin: further evidence for two mu-binding sites. Morphine 26-34 proenkephalin Rattus norvegicus 124-134 2540993-0 1989 Chronic administration of morphine and naltrexone up-regulate mu-opioid binding sites labeled by [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin: further evidence for two mu-binding sites. Naltrexone 39-49 proenkephalin Rattus norvegicus 124-134 2540993-0 1989 Chronic administration of morphine and naltrexone up-regulate mu-opioid binding sites labeled by [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin: further evidence for two mu-binding sites. Tritium 98-100 proenkephalin Rattus norvegicus 124-134 2540993-0 1989 Chronic administration of morphine and naltrexone up-regulate mu-opioid binding sites labeled by [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin: further evidence for two mu-binding sites. mephe4 109-115 proenkephalin Rattus norvegicus 124-134 2927299-5 1989 We found that methionine enkephalin produced a 36 mm Hg (range of 20-50 mm Hg) drop in mean arterial pressure (Pa), which was associated with decreases in calculated skeletal muscle vascular resistance in anesthetized rats, and that these effects on arterial pressure and skeletal muscle vascular resistance were blocked by the infusion of naloxone (10 micrograms.kg-1). Naloxone 340-348 proenkephalin Rattus norvegicus 25-35 2539233-2 1989 A saturating concentration of the mu-specific ligand [3H]D-ala2-N-methyl-Phe4,Gly-ol5-enkephalin was used to label sites in slide-mounted sections through one level of the thalamus in rats implanted subcutaneously with morphine pellets for 5 days. d-ala2-n-methyl-phe4 57-77 proenkephalin Rattus norvegicus 86-96 2540993-0 1989 Chronic administration of morphine and naltrexone up-regulate mu-opioid binding sites labeled by [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin: further evidence for two mu-binding sites. gly-ol5 116-123 proenkephalin Rattus norvegicus 124-134 2540013-4 1989 The mu selective ligand [D-Ala2,N-methylPhe4,Glyol5]enkephalin (DAGO) competed with [3H]EKC for more than one population of binding sites with both high and low affinity. n-methylphe4 32-44 proenkephalin Rattus norvegicus 52-62 2540993-2 1989 Ligand binding studies using membranes and slide-mounted sections of rat brain support the hypothesis that the irreversible mu-antagonist beta-funaltrexamine (FNA) selectively alkylates the opiate receptor complex, altering the binding of mu agonists to the mu cx binding site and the binding of [3H][D-Ala2,D-Leu5]enkephalin to the delta cx site. beta-funaltrexamine 138-157 proenkephalin Rattus norvegicus 315-325 2540993-2 1989 Ligand binding studies using membranes and slide-mounted sections of rat brain support the hypothesis that the irreversible mu-antagonist beta-funaltrexamine (FNA) selectively alkylates the opiate receptor complex, altering the binding of mu agonists to the mu cx binding site and the binding of [3H][D-Ala2,D-Leu5]enkephalin to the delta cx site. beta-funaltrexamine 159-162 proenkephalin Rattus norvegicus 315-325 2540993-5 1989 A prediction based upon these observations is that, using [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin to label mu binding sites, chronic morphine should upregulate only the mu cx binding site, whereas chronic naltrexone should additionally up-regulate the mu ncx binding site. Tritium 59-61 proenkephalin Rattus norvegicus 85-95 2540993-5 1989 A prediction based upon these observations is that, using [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin to label mu binding sites, chronic morphine should upregulate only the mu cx binding site, whereas chronic naltrexone should additionally up-regulate the mu ncx binding site. gly-ol5 77-84 proenkephalin Rattus norvegicus 85-95 2540993-5 1989 A prediction based upon these observations is that, using [3H][D-Ala2,MePhe4,Gly-ol5]enkephalin to label mu binding sites, chronic morphine should upregulate only the mu cx binding site, whereas chronic naltrexone should additionally up-regulate the mu ncx binding site. Morphine 131-139 proenkephalin Rattus norvegicus 85-95 2540013-4 1989 The mu selective ligand [D-Ala2,N-methylPhe4,Glyol5]enkephalin (DAGO) competed with [3H]EKC for more than one population of binding sites with both high and low affinity. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 64-68 proenkephalin Rattus norvegicus 52-62 2540013-4 1989 The mu selective ligand [D-Ala2,N-methylPhe4,Glyol5]enkephalin (DAGO) competed with [3H]EKC for more than one population of binding sites with both high and low affinity. Tritium 85-87 proenkephalin Rattus norvegicus 52-62 2540013-7 1989 DAGO and not DPDPE competed with 2 nM [3H][D-Ala2,D-Leu5]enkephalin (DADLE) with high affinity. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 0-4 proenkephalin Rattus norvegicus 57-67 2540013-7 1989 DAGO and not DPDPE competed with 2 nM [3H][D-Ala2,D-Leu5]enkephalin (DADLE) with high affinity. DADLE 69-74 proenkephalin Rattus norvegicus 57-67 2558475-1 1989 Monovalent cations such as Na+, K+ and Li+ at 100 mM concentration inhibit the binding of mu and delta opioid agonists (e.g. (3H) dihydromorphine and (3H) D-Ala2-Leu5-enkephalin), enhance opioid antagonist [(3H) naloxone] binding in rat brain membranes. (3h) dihydromorphine 125-145 proenkephalin Rattus norvegicus 167-177 2558475-1 1989 Monovalent cations such as Na+, K+ and Li+ at 100 mM concentration inhibit the binding of mu and delta opioid agonists (e.g. (3H) dihydromorphine and (3H) D-Ala2-Leu5-enkephalin), enhance opioid antagonist [(3H) naloxone] binding in rat brain membranes. Tritium 126-128 proenkephalin Rattus norvegicus 167-177 2564622-10 1989 Enkephalin gene transcription was observed to be 2.5-fold less when grown under depolarizing conditions (50 mM KCl) than in control explants. Potassium Chloride 111-114 proenkephalin Rattus norvegicus 0-10 2561993-7 1989 Since destruction of the mesostriatal dopamine system elevates the levels of proenkephalin mRNA, but not of prodynorphin mRNA, in the striatal target neurons, it appears that the mesostriatal pathway exerts a tonic and selective suppression of striatal proenkephalin gene expression at the mRNA level. Dopamine 38-46 proenkephalin Rattus norvegicus 77-90 2744110-6 1989 In addition, a number of the 5-HT/ENK-containing cells were retrogradely labelled with Fluoro-Gold dye that had been injected into the thoracic spinal cord several days prior to perfusion. 2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt 87-98 proenkephalin Rattus norvegicus 34-37 2565245-0 1989 Evidence for the occurrence of an enkephalin-like peptide in adrenaline and noradrenaline neurons of the rat medulla oblongata. Epinephrine 61-71 proenkephalin Rattus norvegicus 34-44 2565245-0 1989 Evidence for the occurrence of an enkephalin-like peptide in adrenaline and noradrenaline neurons of the rat medulla oblongata. Norepinephrine 76-89 proenkephalin Rattus norvegicus 34-44 2534967-1 1989 We investigated regulation of the dynamic state of enkephalin and endorphin brain stores during morphine tolerance and dependence using cDNA hybridization and radioimmunoassay of the biologically active peptide(s) and their respective peptide precursors. Morphine 96-104 proenkephalin Rattus norvegicus 51-61 2561993-7 1989 Since destruction of the mesostriatal dopamine system elevates the levels of proenkephalin mRNA, but not of prodynorphin mRNA, in the striatal target neurons, it appears that the mesostriatal pathway exerts a tonic and selective suppression of striatal proenkephalin gene expression at the mRNA level. Dopamine 38-46 proenkephalin Rattus norvegicus 253-266 2533311-6 1989 The level of beta-endorphin was elevated in the spleen and thymus of morphine tolerant-dependent rats, while the levels of methionine-enkephalin in rats undergoing abrupt or naloxone-precipitated abstinence were significantly higher than in their respective placebo controls. Naloxone 174-182 proenkephalin Rattus norvegicus 134-144 2563293-8 1989 Utilizing the delta opioid receptor specific peptide [3H]-[D-Pen2,D-Pen5]enkephalin, CTOP appeared to be about 2000-fold more specific for mu vs. delta opioid receptor than naloxone. Tritium 54-57 proenkephalin Rattus norvegicus 73-83 2552241-0 1989 A high affinity, highly selective ligand for the delta opioid receptor: [3H]-[D-Pen2, pCl-Phe4, d-Pen5]enkephalin. 3h]-[d-pen2 73-84 proenkephalin Rattus norvegicus 103-113 2552241-0 1989 A high affinity, highly selective ligand for the delta opioid receptor: [3H]-[D-Pen2, pCl-Phe4, d-Pen5]enkephalin. pcl-phe4 86-94 proenkephalin Rattus norvegicus 103-113 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. Tritium 98-100 proenkephalin Rattus norvegicus 76-86 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. Tritium 98-100 proenkephalin Rattus norvegicus 148-158 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. [d-penicillamine2 102-119 proenkephalin Rattus norvegicus 76-86 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). Serotonin 21-30 proenkephalin Rattus norvegicus 143-153 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). Serotonin 21-30 proenkephalin Rattus norvegicus 211-221 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). n-methyl-phe4 121-134 proenkephalin Rattus norvegicus 143-153 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 155-159 proenkephalin Rattus norvegicus 143-153 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 155-159 proenkephalin Rattus norvegicus 211-221 2536429-2 1989 K+-evoked outflow of serotonin was inhibited significantly up to 50% in the presence of the mu-selective agonist [D-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAGO) and of the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE). d-pen2, 197-204 proenkephalin Rattus norvegicus 143-153 2536429-4 1989 The delta antagonist ICI 174,864 (N,N-diallyl-Tyr1,Aib2,Aib3)Leu-enkephalin potently inhibited the effect of DPDPE but did not affect the inhibition produced by DAGO. -tyr1 45-50 proenkephalin Rattus norvegicus 65-75 2536429-4 1989 The delta antagonist ICI 174,864 (N,N-diallyl-Tyr1,Aib2,Aib3)Leu-enkephalin potently inhibited the effect of DPDPE but did not affect the inhibition produced by DAGO. Leucine 61-64 proenkephalin Rattus norvegicus 65-75 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. [d-penicillamine2 102-119 proenkephalin Rattus norvegicus 148-158 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. pcl-phe4 121-129 proenkephalin Rattus norvegicus 76-86 2552241-1 1989 Binding characteristics of a new, conformationally constrained, halogenated enkephalin analogue, [3H]-[D-penicillamine2, pCl-Phe4, D-penicillamine5]enkephalin ([3H]pCl-DPDPE), were determined using homogenized rat brain tissue. Tritium 161-163 proenkephalin Rattus norvegicus 148-158 2533311-9 1989 During abrupt and naloxone-precipitated abstinence, the levels of methionine-enkephalin in the thymus gland are significantly elevated possibly due to an inhibition of their release. Naloxone 18-26 proenkephalin Rattus norvegicus 77-87 2464755-4 1989 Proenkephalin RNA levels are stimulated severalfold by FSH and cAMP, but are not significantly affected by LH or testosterone. Cyclic AMP 63-67 proenkephalin Rattus norvegicus 0-13 2696556-1 1989 The immunogenic conjugates of [leu]enkephalin and bovine serum albumin (BSA) with bisdiazobenzidine and 1,4-benzoquinone as bifunctional reagents have been synthesized. bis(diazo)benzidine 82-99 proenkephalin Rattus norvegicus 35-45 2566925-1 1989 There was stereospecific binding of 3H-lofentanil (KD value = 1.53 nM) to membranes of neuroblastoma-glioma NG 108-15 cells which are known to bear high affinity binding sites for enkephalin derivatives (delta-opiate receptor subtype). 3h-lofentanil 36-49 proenkephalin Rattus norvegicus 180-190 2566925-3 1989 The specific binding of 3H-lofentanil to delta-opiate receptor subtype was down-regulated (decrease in Bmax value without change in the KD value) after prolonged incubation of the cells in the presence of leu- and met- enkephalin (0.1 microM). 3h-lofentanil 24-37 proenkephalin Rattus norvegicus 219-229 2566925-6 1989 Drugs of the fentanyl series (4-anilino-piperidines) were potent displacers whereas agonists of the delta- (enkephalin derivatives), sigma- (phencyclidine, haloperidol, 3-hydroxyphenyl-propylpiperidine) or K- (U 50488) opiate sites had a low affinity (Ki greater than 0.5 microM) for 3H-lofentanil specific binding sites. delta- 100-106 proenkephalin Rattus norvegicus 108-118 2471221-10 1989 d-Ala-met-enkephalin (DALA, 0.01, 0.1, 1.0 micrograms) induced a dose-dependent increase in responding which was also rate-dependent, and reduced quarter-life. Aminolevulinic Acid 22-26 proenkephalin Rattus norvegicus 10-20 2796596-1 1989 The purpose of this study was to evaluate the effects of the millimicrons opioid agonist D-Ala-2-Me-Phe-4-Gly-ol enkephalin (DAGO) on catecholamine-induced arrhythmias. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 125-129 proenkephalin Rattus norvegicus 113-123 2796596-1 1989 The purpose of this study was to evaluate the effects of the millimicrons opioid agonist D-Ala-2-Me-Phe-4-Gly-ol enkephalin (DAGO) on catecholamine-induced arrhythmias. Catecholamines 134-147 proenkephalin Rattus norvegicus 113-123 2852323-2 1988 The evoked population spike response in the CA1 region following activation of the Schaffer collateral and commissural afferents was increased following perfusion with the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE), and with the mu-selective agonist [D-Ala2,NMe-Phe4,Gly(O)5ol]enkephalin (DAGO). [d-ala2,nme-phe4 265-281 proenkephalin Rattus norvegicus 211-221 2852323-2 1988 The evoked population spike response in the CA1 region following activation of the Schaffer collateral and commissural afferents was increased following perfusion with the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE), and with the mu-selective agonist [D-Ala2,NMe-Phe4,Gly(O)5ol]enkephalin (DAGO). Glycine 282-285 proenkephalin Rattus norvegicus 211-221 2852323-2 1988 The evoked population spike response in the CA1 region following activation of the Schaffer collateral and commissural afferents was increased following perfusion with the delta-selective agonist [D-Pen2,D-Pen5]enkephalin (DPDPE), and with the mu-selective agonist [D-Ala2,NMe-Phe4,Gly(O)5ol]enkephalin (DAGO). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 304-308 proenkephalin Rattus norvegicus 211-221 2851638-9 1988 The time-course of inhibition of tritium labelled [D-Ala2-N-Me-Phe4,Gly5-ol]-enkephalin [( 3H]DAGO) binding (mu-opioid sites) revealed that naloxone occupies the mu-receptor for a relatively short period of time. Tritium 33-40 proenkephalin Rattus norvegicus 77-87 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Meptazinol 107-117 proenkephalin Rattus norvegicus 156-166 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Meptazinol 107-117 proenkephalin Rattus norvegicus 288-298 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Tritium 129-131 proenkephalin Rattus norvegicus 156-166 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Tritium 129-131 proenkephalin Rattus norvegicus 288-298 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 168-172 proenkephalin Rattus norvegicus 156-166 2852061-4 1988 Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 168-172 proenkephalin Rattus norvegicus 288-298 2852536-3 1988 In the absence of a cholinesterase inhibitor, 1 microM D-Pen2,L-Pen5-enkephalin produced a 46 and 35% decrease in the release of [3H]ACh evoked by 15 and 25 mM K+, respectively. Tritium 130-132 proenkephalin Rattus norvegicus 69-79 2852536-3 1988 In the absence of a cholinesterase inhibitor, 1 microM D-Pen2,L-Pen5-enkephalin produced a 46 and 35% decrease in the release of [3H]ACh evoked by 15 and 25 mM K+, respectively. Acetylcholine 133-136 proenkephalin Rattus norvegicus 69-79 2852536-4 1988 The depressant action of the enkephalin analogue was concentration dependent, with a maximal effect on K+-evoked [3H]ACh release occurring at 1.0 microM, and was completely blocked in the presence of the delta-opioid receptor selective antagonist, ICI 174864 (1 microM). Tritium 114-116 proenkephalin Rattus norvegicus 29-39 2852536-4 1988 The depressant action of the enkephalin analogue was concentration dependent, with a maximal effect on K+-evoked [3H]ACh release occurring at 1.0 microM, and was completely blocked in the presence of the delta-opioid receptor selective antagonist, ICI 174864 (1 microM). Acetylcholine 117-120 proenkephalin Rattus norvegicus 29-39 2852536-6 1988 Atropine (1 microM) blocked the inhibitory effect of physostigmine on the depressant action of D-Pen2,L-Pen5-enkephalin. Atropine 0-8 proenkephalin Rattus norvegicus 109-119 2852536-6 1988 Atropine (1 microM) blocked the inhibitory effect of physostigmine on the depressant action of D-Pen2,L-Pen5-enkephalin. Physostigmine 53-66 proenkephalin Rattus norvegicus 109-119 2852536-6 1988 Atropine (1 microM) blocked the inhibitory effect of physostigmine on the depressant action of D-Pen2,L-Pen5-enkephalin. d-pen2 95-101 proenkephalin Rattus norvegicus 109-119 3243206-0 1988 Effect of enkephalin analogues Tyr-D-Ala-Gly-Phe-Cys(Et) and Tyr-D-Ala-Gly-Phe-Cys(Bu) on prolactin and growth hormone release in rats. tyr-d-ala-gly-phe-cys 31-52 proenkephalin Rattus norvegicus 10-20 2851638-9 1988 The time-course of inhibition of tritium labelled [D-Ala2-N-Me-Phe4,Gly5-ol]-enkephalin [( 3H]DAGO) binding (mu-opioid sites) revealed that naloxone occupies the mu-receptor for a relatively short period of time. [d-ala2-n-me-phe4 50-67 proenkephalin Rattus norvegicus 77-87 2851638-9 1988 The time-course of inhibition of tritium labelled [D-Ala2-N-Me-Phe4,Gly5-ol]-enkephalin [( 3H]DAGO) binding (mu-opioid sites) revealed that naloxone occupies the mu-receptor for a relatively short period of time. Tritium 89-93 proenkephalin Rattus norvegicus 77-87 2851638-9 1988 The time-course of inhibition of tritium labelled [D-Ala2-N-Me-Phe4,Gly5-ol]-enkephalin [( 3H]DAGO) binding (mu-opioid sites) revealed that naloxone occupies the mu-receptor for a relatively short period of time. Naloxone 140-148 proenkephalin Rattus norvegicus 77-87 2853850-4 1988 Reverse-phase high-performance liquid chromatography (RP-HPLC) of heart extracts indicated that the major form of ir-Leu-Enk in SHR rats coelutes with synthetic Leu-Enk and is increased by an approximate factor of 4.2-fold as compared with its eluting counterpart in the WKY chromatogram. Leucine 117-120 proenkephalin Rattus norvegicus 121-124 2908056-5 1988 In contrast, the enkephalin-like immunoreactive patches in the marginal zone occupied a smaller area, and showed only an incomplete, albeit significant overlap with the tyrosine hydroxylase-like immunoreactive/dopamine- and cyclic AMP-regulated phosphoprotein-like immunoreactive system. Dopamine 210-218 proenkephalin Rattus norvegicus 17-27 2853850-4 1988 Reverse-phase high-performance liquid chromatography (RP-HPLC) of heart extracts indicated that the major form of ir-Leu-Enk in SHR rats coelutes with synthetic Leu-Enk and is increased by an approximate factor of 4.2-fold as compared with its eluting counterpart in the WKY chromatogram. Leucine 117-120 proenkephalin Rattus norvegicus 165-168 2853850-5 1988 The delta-selective opioid ligand, [3H][D-Pen2, D-Pen5]-Enk [( 3H]DPDPE) bound to two distinct receptor sites in membrane preparations of hearts from WKY rats with Kd of 1.33 and 22.8 nM and Bmax of 3.9 and 14.6 pmol/g protein, respectively. Tritium 36-38 proenkephalin Rattus norvegicus 56-59 2853850-5 1988 The delta-selective opioid ligand, [3H][D-Pen2, D-Pen5]-Enk [( 3H]DPDPE) bound to two distinct receptor sites in membrane preparations of hearts from WKY rats with Kd of 1.33 and 22.8 nM and Bmax of 3.9 and 14.6 pmol/g protein, respectively. d-pen2 40-46 proenkephalin Rattus norvegicus 56-59 2853850-5 1988 The delta-selective opioid ligand, [3H][D-Pen2, D-Pen5]-Enk [( 3H]DPDPE) bound to two distinct receptor sites in membrane preparations of hearts from WKY rats with Kd of 1.33 and 22.8 nM and Bmax of 3.9 and 14.6 pmol/g protein, respectively. d-pen5 48-54 proenkephalin Rattus norvegicus 56-59 2853850-5 1988 The delta-selective opioid ligand, [3H][D-Pen2, D-Pen5]-Enk [( 3H]DPDPE) bound to two distinct receptor sites in membrane preparations of hearts from WKY rats with Kd of 1.33 and 22.8 nM and Bmax of 3.9 and 14.6 pmol/g protein, respectively. Tritium 63-65 proenkephalin Rattus norvegicus 56-59 2853850-7 1988 These data indicate that the hypertensive state in SHR rats is manifested through a rise in the cardiac level of Leu-Enk and a selective down-regulation of its low-affinity delta-opioid receptor. Leucine 113-116 proenkephalin Rattus norvegicus 117-120 3171591-0 1988 Studies on the tissue distribution of the puromycin-sensitive enkephalin-degrading aminopeptidases. Puromycin 42-51 proenkephalin Rattus norvegicus 62-72 3069240-5 1988 In adult females, the maintenance of immunohistochemically detectable levels of m-ENK in this fiber system is dependent upon the presence of gonadal steroids, especially estradiol. Steroids 149-157 proenkephalin Rattus norvegicus 82-85 3069240-5 1988 In adult females, the maintenance of immunohistochemically detectable levels of m-ENK in this fiber system is dependent upon the presence of gonadal steroids, especially estradiol. Estradiol 170-179 proenkephalin Rattus norvegicus 82-85 3069240-6 1988 Therefore, we examined whether exposure of pre-pubertal females to estradiol would result in precocious expression of the m-ENK fiber plexus. Estradiol 67-76 proenkephalin Rattus norvegicus 124-127 3069240-7 1988 The results of this experiment demonstrate that exposure to estradiol for 7 days induces the full expression of the m-ENK fiber system in the pePOA of prepubertal females, such that it was indistinguishable from that seen in mature animals. Estradiol 60-69 proenkephalin Rattus norvegicus 118-121 2846819-6 1988 The results demonstrate that beta-FNA alters the conformation of the opiate receptor complex, as evidenced by a decrease in the Bmax of the lower affinity [3H]D-Ala2-D-Leu5-enkephalin binding site and a doubling of the naloxone IC50 for displacing [3H]D-Ala3-D-Leu5-enkephalin from this site. beta-funaltrexamine 29-37 proenkephalin Rattus norvegicus 173-183 2846819-6 1988 The results demonstrate that beta-FNA alters the conformation of the opiate receptor complex, as evidenced by a decrease in the Bmax of the lower affinity [3H]D-Ala2-D-Leu5-enkephalin binding site and a doubling of the naloxone IC50 for displacing [3H]D-Ala3-D-Leu5-enkephalin from this site. beta-funaltrexamine 29-37 proenkephalin Rattus norvegicus 266-276 2846819-6 1988 The results demonstrate that beta-FNA alters the conformation of the opiate receptor complex, as evidenced by a decrease in the Bmax of the lower affinity [3H]D-Ala2-D-Leu5-enkephalin binding site and a doubling of the naloxone IC50 for displacing [3H]D-Ala3-D-Leu5-enkephalin from this site. Tritium 156-158 proenkephalin Rattus norvegicus 173-183 2846819-7 1988 [3H]D-Ala2-MePhe4,Gly-ol5-enkephalin binding sites were not detectably altered by i.c.v. Tritium 1-3 proenkephalin Rattus norvegicus 26-36 3211364-0 1988 Effects of exposure in utero to methadone and buprenorphine on enkephalin levels in the developing rat brain. Methadone 32-41 proenkephalin Rattus norvegicus 63-73 3211364-0 1988 Effects of exposure in utero to methadone and buprenorphine on enkephalin levels in the developing rat brain. Buprenorphine 46-59 proenkephalin Rattus norvegicus 63-73 2850064-4 1988 The membrane was hyperpolarized by the opioid peptides Tyr-D-Ala-Gly-MePhe-Gly-ol (DAGOL, 0.01-1 microM) and [Met5]enkephalin (3-30 microM), though not by Tyr-D-Pen-Gly-Phe-D-Pen and U50488. Enkephalin, pen(2,5)- 155-178 proenkephalin Rattus norvegicus 115-125 2850064-4 1988 The membrane was hyperpolarized by the opioid peptides Tyr-D-Ala-Gly-MePhe-Gly-ol (DAGOL, 0.01-1 microM) and [Met5]enkephalin (3-30 microM), though not by Tyr-D-Pen-Gly-Phe-D-Pen and U50488. 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer 183-189 proenkephalin Rattus norvegicus 115-125 2850064-5 1988 In two experiments, naloxone competitively antagonized the effects of DAGOL and [Met]enkephalin with equilibrium dissociation constants of 0.8 and 3.2 nM, respectively. Naloxone 20-28 proenkephalin Rattus norvegicus 85-95 2850064-12 1988 Muscarine has been shown previously to increase the potassium conductance by an action at M2-receptors: the potassium currents induced by maximal concentrations of muscarine, baclofen and [Met5]enkephalin were non-additive, indicating that these agonists opened the same population of potassium channels. Potassium 52-61 proenkephalin Rattus norvegicus 194-204 2850064-12 1988 Muscarine has been shown previously to increase the potassium conductance by an action at M2-receptors: the potassium currents induced by maximal concentrations of muscarine, baclofen and [Met5]enkephalin were non-additive, indicating that these agonists opened the same population of potassium channels. Potassium 108-117 proenkephalin Rattus norvegicus 194-204 2459307-1 1988 The time course changes in levels of mRNA encoding glutamic acid decarboxylase (GAD) and proenkephalin (PPE) was analyzed in the rat striatum following unilateral lesion of substantia nigra with 6-hydroxydopamine. Oxidopamine 195-212 proenkephalin Rattus norvegicus 89-102 2846828-4 1988 The binding of [3H]-D-Ala2MePhe4Glyol enkephalin (3H-DAGO) to mu opioid sites was increased in many brain regions after chronic administration (7 days) of a low dose of naloxone (0.5 mg/kg/hr). 3h-dago 50-57 proenkephalin Rattus norvegicus 38-48 2846828-4 1988 The binding of [3H]-D-Ala2MePhe4Glyol enkephalin (3H-DAGO) to mu opioid sites was increased in many brain regions after chronic administration (7 days) of a low dose of naloxone (0.5 mg/kg/hr). Naloxone 169-177 proenkephalin Rattus norvegicus 38-48 2851117-1 1988 In vitro quantitative receptor autoradiography was performed on frozen sections of rat and human brain to visualize delta opiate receptors using the specific ligand [3H][D-Pen2, D-Pen5]enkephalin. Tritium 166-168 proenkephalin Rattus norvegicus 185-195 2851117-1 1988 In vitro quantitative receptor autoradiography was performed on frozen sections of rat and human brain to visualize delta opiate receptors using the specific ligand [3H][D-Pen2, D-Pen5]enkephalin. d-pen5 178-184 proenkephalin Rattus norvegicus 185-195 2851117-2 1988 For comparison, rat brain sections were also labelled with [3H]D-Ala2, D-Leu5-enkephalin. Tritium 60-62 proenkephalin Rattus norvegicus 78-88 2851117-3 1988 Compounds which block mu and kappa binding were included to make the [3H]D-Ala2, D-Leu5-enkephalin binding more specific. Tritium 70-72 proenkephalin Rattus norvegicus 88-98 2851117-5 1988 Sites labelled with [3H][D-Pen2,D-Pen5]enkephalin were distributed heterogeneously within the layers of the frontal and parietal cerebral cortex, with high densities in the superficial and deep cortical layers. Tritium 21-23 proenkephalin Rattus norvegicus 39-49 2851117-7 1988 The distribution of [3H]D-Ala2,D-Leu5-enkephalin binding sites was similar to that of [3H][D-Pen2,D-Pen5]enkephalin, except that there was less heterogeneity in the frontal cortex. Tritium 21-23 proenkephalin Rattus norvegicus 38-48 3211364-3 1988 Methadone at 8 mg/kg but not 4 mg/kg significantly reduced enkephalin levels in the striatum. Methadone 0-9 proenkephalin Rattus norvegicus 59-69 3171591-1 1988 An antiserum generated to the soluble form of the rat brain puromycin-sensitive enkephalin-degrading aminopeptidase was used to determine the tissue distribution of the soluble and membrane-associated forms of this enzyme. Puromycin 60-69 proenkephalin Rattus norvegicus 80-90 2845983-1 1988 Partially purified opioid receptors, obtained from rat brains using an affinity resin, AF-Amino Toyopearl with [D-Ala2, Leu5]enkephalin, were reconstituted with an inhibitory GTP-binding protein (Gi). Guanosine Triphosphate 175-178 proenkephalin Rattus norvegicus 125-135 2902210-5 1988 Among other alternatives, it is suggested that enkephalin hydrolysis in plasma may appear to be unique because of differences in enzyme conformation and/or the availability of a substance(s) that competes with, or alters the binding of, [leu] enkephalin, DALLE or the inhibitors to the enzymes. Leucine 238-241 proenkephalin Rattus norvegicus 47-57 2902210-5 1988 Among other alternatives, it is suggested that enkephalin hydrolysis in plasma may appear to be unique because of differences in enzyme conformation and/or the availability of a substance(s) that competes with, or alters the binding of, [leu] enkephalin, DALLE or the inhibitors to the enzymes. Leucine 238-241 proenkephalin Rattus norvegicus 243-253 2460751-0 1988 Gonadal steroids regulate proenkephalin gene expression in a tissue-specific manner within the female reproductive system. Steroids 8-16 proenkephalin Rattus norvegicus 26-39 2852045-6 1988 Bath application (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO), (D-Ala2,D-Leu5)-enkephalinamide (DADLEA), or (D-Ala2,D-Met5)-enkephalinamide (DADMEA) produced dose-dependent, reversible hyperpolarization in about 75% of the neurons tested. n-me-phe4 25-34 proenkephalin Rattus norvegicus 44-54 2460751-9 1988 These distinct steroid responses appear to account for tissue- and species-related differences in the variation of proenkephalin gene expression during the estrous cycle in the rodent ovary and uterus. Steroids 15-22 proenkephalin Rattus norvegicus 115-128 2853837-1 1988 The diazomethyl ketone derivative of D-Ala2-Leu-enkephalin and Leu-enkephalin were synthesized. diazomethyl ketones 4-22 proenkephalin Rattus norvegicus 48-58 2853837-1 1988 The diazomethyl ketone derivative of D-Ala2-Leu-enkephalin and Leu-enkephalin were synthesized. diazomethyl ketones 4-22 proenkephalin Rattus norvegicus 67-77 2853838-0 1988 Evidence that long-term administration of a methionine-enkephalin analogue stimulates the growth and steroidogenic capacity of rat inner adrenocortical cells. Methionine 44-54 proenkephalin Rattus norvegicus 55-65 2853057-5 1988 The pA2 values for antagonism by naloxone in low calcium of the mu-selective peptide [D-Ala2,MePhe4,Gly(ol)5]enkephalin and other mu- or delta-selective agonists were consistent with an action at mu-receptors only. Naloxone 33-41 proenkephalin Rattus norvegicus 109-119 2853057-5 1988 The pA2 values for antagonism by naloxone in low calcium of the mu-selective peptide [D-Ala2,MePhe4,Gly(ol)5]enkephalin and other mu- or delta-selective agonists were consistent with an action at mu-receptors only. gly(ol)5 100-108 proenkephalin Rattus norvegicus 109-119 2853057-9 1988 Responses to both [D-Ala2,MePhe4,Gly(ol)5]enkephalin and beta-endorphin were attenuated by the irreversible antagonists beta-funaltrexamine and beta-chlornaltrexamine. mephe4 26-32 proenkephalin Rattus norvegicus 42-52 2853057-9 1988 Responses to both [D-Ala2,MePhe4,Gly(ol)5]enkephalin and beta-endorphin were attenuated by the irreversible antagonists beta-funaltrexamine and beta-chlornaltrexamine. beta-funaltrexamine 120-139 proenkephalin Rattus norvegicus 42-52 2853057-9 1988 Responses to both [D-Ala2,MePhe4,Gly(ol)5]enkephalin and beta-endorphin were attenuated by the irreversible antagonists beta-funaltrexamine and beta-chlornaltrexamine. chlornaltrexamine 144-166 proenkephalin Rattus norvegicus 42-52 2902901-2 1988 Peptides were injected into the paraventricular and supraoptic hypothalamic nuclei, D-Ala2-NMePhe4-Gly(ol)-enkephalin, a mu-selective opioid agonist, tended to increase water intake in non-deprived rats, but 0.01 and 0.1 microgram significantly decreased water intake for 45 min in deprived rats, and for up to 60 min in hypertonic saline-injected rats when injected into the paraventricular hypothalamic nucleus. d-ala2-nmephe4-gly 84-102 proenkephalin Rattus norvegicus 107-117 2847072-0 1988 Chronic administration of morphine and naltrexone up-regulate[3H][D-Ala2,D-leu5]enkephalin binding sites by different mechanisms. Morphine 26-34 proenkephalin Rattus norvegicus 80-90 3235505-3 1988 The method permits the simple and sensitive detection of N-terminal tyrosine-containing fragments of the enkephalin peptide. Tyrosine 68-76 proenkephalin Rattus norvegicus 105-115 3216286-3 1988 The analgesic effect of D-Enk was antagonized by pretreatment with naloxone (5 mg/kg, i.p.). Naloxone 67-75 proenkephalin Rattus norvegicus 26-29 3216286-6 1988 The antitussive effect of D-Enk was antagonized by pretreatment with naloxone (0.4 mg/kg, i.p.). Naloxone 69-77 proenkephalin Rattus norvegicus 28-31 2847072-0 1988 Chronic administration of morphine and naltrexone up-regulate[3H][D-Ala2,D-leu5]enkephalin binding sites by different mechanisms. Naltrexone 39-49 proenkephalin Rattus norvegicus 80-90 3050621-5 1988 We speculate that a major function of endogenous enkephalin-containing fibers projecting to the dentate is to dampen afferent synaptic transmission. dentate 96-103 proenkephalin Rattus norvegicus 49-59 2847072-0 1988 Chronic administration of morphine and naltrexone up-regulate[3H][D-Ala2,D-leu5]enkephalin binding sites by different mechanisms. Tritium 62-64 proenkephalin Rattus norvegicus 80-90 2847072-0 1988 Chronic administration of morphine and naltrexone up-regulate[3H][D-Ala2,D-leu5]enkephalin binding sites by different mechanisms. d-ala2,d-leu5 66-79 proenkephalin Rattus norvegicus 80-90 2847072-1 1988 Previous studies have demonstrated that chronic administration of morphine up-regulated the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin, without producing a detectable alteration in the higher affinity binding site for [3H][D-ala2,D-leu5]enkephalin (Rothman et al., Eur. Morphine 66-74 proenkephalin Rattus norvegicus 143-153 2847072-1 1988 Previous studies have demonstrated that chronic administration of morphine up-regulated the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin, without producing a detectable alteration in the higher affinity binding site for [3H][D-ala2,D-leu5]enkephalin (Rothman et al., Eur. Morphine 66-74 proenkephalin Rattus norvegicus 256-266 2847072-1 1988 Previous studies have demonstrated that chronic administration of morphine up-regulated the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin, without producing a detectable alteration in the higher affinity binding site for [3H][D-ala2,D-leu5]enkephalin (Rothman et al., Eur. Tritium 125-127 proenkephalin Rattus norvegicus 143-153 2847072-1 1988 Previous studies have demonstrated that chronic administration of morphine up-regulated the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin, without producing a detectable alteration in the higher affinity binding site for [3H][D-ala2,D-leu5]enkephalin (Rothman et al., Eur. Tritium 125-128 proenkephalin Rattus norvegicus 143-153 2847072-4 1988 The experiments reported in this paper tested the hypothesis that chronic administration of morphine and naltrexone up-regulated the binding sites for [3H][D-ala2,D-leu5]enkephalin by different mechanisms. Morphine 92-100 proenkephalin Rattus norvegicus 170-180 2847072-4 1988 The experiments reported in this paper tested the hypothesis that chronic administration of morphine and naltrexone up-regulated the binding sites for [3H][D-ala2,D-leu5]enkephalin by different mechanisms. Naltrexone 105-115 proenkephalin Rattus norvegicus 170-180 2847072-4 1988 The experiments reported in this paper tested the hypothesis that chronic administration of morphine and naltrexone up-regulated the binding sites for [3H][D-ala2,D-leu5]enkephalin by different mechanisms. Tritium 152-154 proenkephalin Rattus norvegicus 170-180 2847072-4 1988 The experiments reported in this paper tested the hypothesis that chronic administration of morphine and naltrexone up-regulated the binding sites for [3H][D-ala2,D-leu5]enkephalin by different mechanisms. d-leu5 163-169 proenkephalin Rattus norvegicus 170-180 2847072-6 1988 Chronic administration of morphine up-regulated the lower affinity site, while chronic administration of naltrexone up-regulated both the higher and lower affinity binding sites for [3H][D-ala2,D-leu5]enkephalin. Morphine 26-34 proenkephalin Rattus norvegicus 201-211 2847072-6 1988 Chronic administration of morphine up-regulated the lower affinity site, while chronic administration of naltrexone up-regulated both the higher and lower affinity binding sites for [3H][D-ala2,D-leu5]enkephalin. Naltrexone 105-115 proenkephalin Rattus norvegicus 201-211 2847072-6 1988 Chronic administration of morphine up-regulated the lower affinity site, while chronic administration of naltrexone up-regulated both the higher and lower affinity binding sites for [3H][D-ala2,D-leu5]enkephalin. Tritium 183-185 proenkephalin Rattus norvegicus 201-211 2847072-6 1988 Chronic administration of morphine up-regulated the lower affinity site, while chronic administration of naltrexone up-regulated both the higher and lower affinity binding sites for [3H][D-ala2,D-leu5]enkephalin. d-leu5 194-200 proenkephalin Rattus norvegicus 201-211 2847072-7 1988 Unlike the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin present in membranes prepared from rats treated with placebo pellets, the lower affinity binding sites which were up-regulated by naltrexone and morphine were partially (naltrexone) or completely (morphine) labile to preincubation for 60 min at 25 degrees C in 50 mM Tris-HCl, pH 7.4, containing 0.4 M NaCl. Tritium 44-46 proenkephalin Rattus norvegicus 62-72 2847072-7 1988 Unlike the lower affinity binding site for [3H][D-ala2,D-leu5]enkephalin present in membranes prepared from rats treated with placebo pellets, the lower affinity binding sites which were up-regulated by naltrexone and morphine were partially (naltrexone) or completely (morphine) labile to preincubation for 60 min at 25 degrees C in 50 mM Tris-HCl, pH 7.4, containing 0.4 M NaCl. d-leu5 55-61 proenkephalin Rattus norvegicus 62-72 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Morphine 50-58 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Morphine 50-58 proenkephalin Rattus norvegicus 230-240 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Naltrexone 63-73 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Naltrexone 63-73 proenkephalin Rattus norvegicus 230-240 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Tritium 105-107 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Tritium 105-107 proenkephalin Rattus norvegicus 230-240 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. d-leu5 116-122 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Tritium 211-213 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Tritium 211-213 proenkephalin Rattus norvegicus 230-240 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. d-leu5 223-229 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Morphine 293-301 proenkephalin Rattus norvegicus 123-133 2847072-8 1988 These data suggest that chronic administration of morphine and naltrexone up-regulate binding sites for [3H][D-ala2,D-leu5]enkephalin through different mechanisms, and that the lower affinity binding sites for [3H][D-ala2, D-leu5]enkephalin which are up-regulated by chronic administration of morphine and naltrexone might differ biochemically from the lower affinity binding sites present in membranes treated with placebo. Naltrexone 306-316 proenkephalin Rattus norvegicus 123-133 3179742-8 1988 This is in contrast to the tonic suppression of proenkephalin gene expression mediated by the mesostriatal dopamine pathway. Dopamine 107-115 proenkephalin Rattus norvegicus 48-61 3135174-0 1988 Enkephalin inhibits dopamine synthesis in vitro in the median eminence portion of rat hypothalamic slices. Dopamine 20-28 proenkephalin Rattus norvegicus 0-10 3135174-1 1988 The effect of enkephalin on dopamine synthesis in vitro in tuberoinfundibular dopaminergic (TIDA) neurons was investigated in rat hypothalamic slices. Dopamine 28-36 proenkephalin Rattus norvegicus 14-24 3135174-3 1988 The enkephalin agonist [D-Ala2]Met-enkephalinamide (ENKamide) decreased the rate of basal DOPA accumulation in the median eminence portion of hypothalamic slices from ovariectomized rats at concentrations over 2 microM. enkamide 52-60 proenkephalin Rattus norvegicus 4-14 3135174-3 1988 The enkephalin agonist [D-Ala2]Met-enkephalinamide (ENKamide) decreased the rate of basal DOPA accumulation in the median eminence portion of hypothalamic slices from ovariectomized rats at concentrations over 2 microM. Dihydroxyphenylalanine 90-94 proenkephalin Rattus norvegicus 4-14 3135174-8 1988 These results suggest that enkephalin, by acting directly on axon terminals of TIDA neurons in the median eminence, inhibits basal dopamine synthesis. Dopamine 131-139 proenkephalin Rattus norvegicus 27-37 2846934-0 1988 Study on the receptor subtypes mediating the analgesic action of an enkephalin analog, Tyr-D-Met(O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399). tyr-d-met 87-96 proenkephalin Rattus norvegicus 68-78 2846934-0 1988 Study on the receptor subtypes mediating the analgesic action of an enkephalin analog, Tyr-D-Met(O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399). (o)-gly-etphe-nhnhcoch3 96-119 proenkephalin Rattus norvegicus 68-78 2846934-0 1988 Study on the receptor subtypes mediating the analgesic action of an enkephalin analog, Tyr-D-Met(O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399). Acetic Acid 120-124 proenkephalin Rattus norvegicus 68-78 2455787-6 1988 Methionine enkephalin (1 microM) or [D-Pen2, D-Pen5]enkephalin inhibited KCl-stimulated amylase release by 32 +/- 4 and 45 +/- 4%, respectively. Potassium Chloride 73-76 proenkephalin Rattus norvegicus 11-21 3069065-6 1988 The effects of AcS-morphine on the specific binding of [3H]-naloxone, [3H]-ethylketocyclazocine and [3H]-D-Ala2-D-Leu5-enkephalin to the membrane fractions from the rat brain were tested. acs-morphine 15-27 proenkephalin Rattus norvegicus 119-129 2458188-0 1988 Ultrastructural localization of immunolabeled substance P and methionine-enkephalin-octapeptide in the surface layer of the dorsal horn of rat spinal cord. Methionine 62-72 proenkephalin Rattus norvegicus 73-83 2455787-6 1988 Methionine enkephalin (1 microM) or [D-Pen2, D-Pen5]enkephalin inhibited KCl-stimulated amylase release by 32 +/- 4 and 45 +/- 4%, respectively. Potassium Chloride 73-76 proenkephalin Rattus norvegicus 52-62 2455787-11 1988 To examine the ability of methionine enkephalin to alter acetylcholine release from pancreatic tissue, pancreatic lobules were incubated with [3H]choline and the release of synthesized [3H]acetylcholine was stimulated by KCl. Acetylcholine 57-70 proenkephalin Rattus norvegicus 37-47 2839673-9 1988 Hypothermic responses to U50488H were not blocked by naloxone, whereas hypothermic responses to [D-Pen2, D-Pen5]enkephalin in unrestrained rats were potentiated by naloxone. Naloxone 164-172 proenkephalin Rattus norvegicus 112-122 2845291-10 1988 The mu-agonist (D-Ala2, MePhe5 Gly-ol)-enkephalin also failed to inhibit [3H]-noradrenaline release and caused only a minor inhibition of oxytocin and vasopressin secretion. mephe5 gly-ol 24-37 proenkephalin Rattus norvegicus 39-49 2837232-5 1988 Fourth, an additional injection of dynorphin (1-13) or ethylketocyclazocine (kappa agonist) also increased the serum concentrations of preadministered [125I-Tyr27]beta-EP but injection of Ala2-D-Leu5-enkephalin (delta agonist) or naloxone (mu antagonist) did not, suggesting kappa-type binding sites in the lung. Ethylketocyclazocine 55-75 proenkephalin Rattus norvegicus 200-210 2458542-13 1988 After colchicine treatment, both enkephalin- and substance P-positive cell bodies were visualized. Colchicine 6-16 proenkephalin Rattus norvegicus 33-43 3042094-6 1988 injection of 1000 ng/100 g of Met-enkephalin reproduced the t-p inhibitory effect. Pro-Thr-Thr-Lys-Thr-Tyr-Phe-Pro-His-Phe 60-63 proenkephalin Rattus norvegicus 34-44 3042094-9 1988 The results obtained with central alpha-adrenoceptor antagonists and central noradrenergic chemical destruction, or central alpha-adrenoceptor agonists, support the production of a reinforcement of the alpha-adrenoceptor stress stimulation by the t-p procedure, probably through noradrenaline and enkephalin mediation. Pro-Thr-Thr-Lys-Thr-Tyr-Phe-Pro-His-Phe 247-250 proenkephalin Rattus norvegicus 297-307 3395450-1 1988 A very high correlation was found in rats between latency to escape on the first trial of an active avoidance task and the rate at which [leu]enkephalin is hydrolyzed in plasma. Leucine 138-141 proenkephalin Rattus norvegicus 142-152 2851562-0 1988 Synthesis and receptor binding characteristics of [D-Ala2, cysteamine 5] enkephalin, a thiol-containing probe for structural elements of opiate receptors. Sulfhydryl Compounds 87-92 proenkephalin Rattus norvegicus 73-83 2851562-1 1988 For the elucidation of structural elements in the opiate receptors, a thiol-containing enkephalin analog [D-Ala2, cysteamine 5]enkephalin, and its dimeric analog were synthesized and evaluated in the radio-ligand receptor binding assays using rat brain membranes. Sulfhydryl Compounds 70-75 proenkephalin Rattus norvegicus 87-97 2851562-1 1988 For the elucidation of structural elements in the opiate receptors, a thiol-containing enkephalin analog [D-Ala2, cysteamine 5]enkephalin, and its dimeric analog were synthesized and evaluated in the radio-ligand receptor binding assays using rat brain membranes. Sulfhydryl Compounds 70-75 proenkephalin Rattus norvegicus 127-137 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 41-46 proenkephalin Rattus norvegicus 58-68 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 41-46 proenkephalin Rattus norvegicus 260-270 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 183-188 proenkephalin Rattus norvegicus 58-68 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 183-188 proenkephalin Rattus norvegicus 260-270 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 183-188 proenkephalin Rattus norvegicus 58-68 2851562-3 1988 Comparison of receptor affinities of the thiol-containing enkephalin with those of standard mu or delta receptor specific ligands suggested that the mu receptor contains an essential thiol group which may interact with the thiol group at the C-terminus of the enkephalin analog. Sulfhydryl Compounds 183-188 proenkephalin Rattus norvegicus 260-270 2838332-0 1988 A highly selective ligand for brain delta opiate receptors, a cyclopropyl(E)Phe(4)-enkephalin analog, suppresses mu receptor-mediated thermal analgesia by morphine. Morphine 155-163 proenkephalin Rattus norvegicus 83-93 2838332-1 1988 [D-Ala(2)(2R,3S)-delta(E)Phe(4)Leu(5)]enkephalin (CP-OH) [delta denoting cyclopropyl; superscript E indicating the E-configuration about the cyclopropane ring], a highly selective opioid ligand for delta receptors in rat brain, but not for those in the mouse vas deferens, was examined for in vivo biological activities by intracerebroventricular administration. [d-ala(2)(2r,3s)-delta(e)phe 0-28 proenkephalin Rattus norvegicus 38-48 2838332-1 1988 [D-Ala(2)(2R,3S)-delta(E)Phe(4)Leu(5)]enkephalin (CP-OH) [delta denoting cyclopropyl; superscript E indicating the E-configuration about the cyclopropane ring], a highly selective opioid ligand for delta receptors in rat brain, but not for those in the mouse vas deferens, was examined for in vivo biological activities by intracerebroventricular administration. cp-oh 50-55 proenkephalin Rattus norvegicus 38-48 2838332-1 1988 [D-Ala(2)(2R,3S)-delta(E)Phe(4)Leu(5)]enkephalin (CP-OH) [delta denoting cyclopropyl; superscript E indicating the E-configuration about the cyclopropane ring], a highly selective opioid ligand for delta receptors in rat brain, but not for those in the mouse vas deferens, was examined for in vivo biological activities by intracerebroventricular administration. cyclopropane 141-153 proenkephalin Rattus norvegicus 38-48 2841009-12 1988 This enkephalin mediated locomotor response was blocked by the opiate antagonist naloxone (2 mg/kg). Opiate Alkaloids 63-69 proenkephalin Rattus norvegicus 5-15 2841009-12 1988 This enkephalin mediated locomotor response was blocked by the opiate antagonist naloxone (2 mg/kg). Naloxone 81-89 proenkephalin Rattus norvegicus 5-15 3401703-14 1988 Similarly, as in AM, DEX produced increase in the SCG pEK mRNA only in HPX (+68%) and not in the SO rats. Dexamethasone 21-24 proenkephalin Rattus norvegicus 54-57 3401703-15 1988 In SCG, DEX produced decreases in total ME-LI which could be attributed to an increased enkephalin release. Dexamethasone 8-11 proenkephalin Rattus norvegicus 88-98 3401703-15 1988 In SCG, DEX produced decreases in total ME-LI which could be attributed to an increased enkephalin release. me-li 40-45 proenkephalin Rattus norvegicus 88-98 3410635-1 1988 Different synthetic strategies have been attempted for the synthesis of a glycosylpeptide resulting from the covalent bonding of a sugar residue to the C-terminal carboxyl group of an enkephalin related pentapeptide. Sugars 131-136 proenkephalin Rattus norvegicus 184-194 3360795-3 1988 Activity was assayed by high performance liquid chromatography (HPLC) using Arg0-Met5-enkephalin (Arg0-enk)* as substrate in the presence of bestatin, thiorphan, and captopril. ubenimex 141-149 proenkephalin Rattus norvegicus 86-96 3360795-3 1988 Activity was assayed by high performance liquid chromatography (HPLC) using Arg0-Met5-enkephalin (Arg0-enk)* as substrate in the presence of bestatin, thiorphan, and captopril. Captopril 166-175 proenkephalin Rattus norvegicus 86-96 3410377-0 1988 [Changes in the potentiation effect of [D-Ala2, Met5]-enkephalin on pressor responses to l-adrenaline in adrenal-enucleated rats]. Epinephrine 89-101 proenkephalin Rattus norvegicus 54-64 2840299-1 1988 Dopamine D-1 receptor-stimulated cyclic AMP efflux from superfused rat neostriatal slices was strongly inhibited by the delta-opioid receptor agonist, [D-Pen2, D-Pen5]enkephalin (DPDPE, 1 microM), and by the mu-opioid receptor agonist, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO, 1 microM). Cyclic AMP 33-43 proenkephalin Rattus norvegicus 167-177 2840299-1 1988 Dopamine D-1 receptor-stimulated cyclic AMP efflux from superfused rat neostriatal slices was strongly inhibited by the delta-opioid receptor agonist, [D-Pen2, D-Pen5]enkephalin (DPDPE, 1 microM), and by the mu-opioid receptor agonist, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO, 1 microM). Cyclic AMP 33-43 proenkephalin Rattus norvegicus 259-269 2840299-1 1988 Dopamine D-1 receptor-stimulated cyclic AMP efflux from superfused rat neostriatal slices was strongly inhibited by the delta-opioid receptor agonist, [D-Pen2, D-Pen5]enkephalin (DPDPE, 1 microM), and by the mu-opioid receptor agonist, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO, 1 microM). mephe4, 244-251 proenkephalin Rattus norvegicus 167-177 3041310-2 1988 Chronic administration of haloperidol (2.4 mg/kg/day for 7 days) increased the levels of proenkephalin mRNA in both striatum and nucleus accumbens. Haloperidol 26-37 proenkephalin Rattus norvegicus 89-102 2456219-5 1988 In addition, [Leu5]enkephalin (10(-6) and 10(-5) M) decreased the prolactin-induced in vitro dopamine release from dorsal striatal fragments superfused with Krebs-Ringer phosphate-TTX medium. Dopamine 93-101 proenkephalin Rattus norvegicus 19-29 2456219-5 1988 In addition, [Leu5]enkephalin (10(-6) and 10(-5) M) decreased the prolactin-induced in vitro dopamine release from dorsal striatal fragments superfused with Krebs-Ringer phosphate-TTX medium. krebs 157-162 proenkephalin Rattus norvegicus 19-29 2456219-5 1988 In addition, [Leu5]enkephalin (10(-6) and 10(-5) M) decreased the prolactin-induced in vitro dopamine release from dorsal striatal fragments superfused with Krebs-Ringer phosphate-TTX medium. phosphate-ttx medium 170-190 proenkephalin Rattus norvegicus 19-29 3410377-6 1988 2) In the control male and female rats, the 5 min pretreatment with enkephalin enhanced the pressor response to l-adrenaline, and the pressor effect of enkephalin plus l-adrenaline was suppressed by pretreatment with naloxone (2.5 mg/kg, s.c.). Epinephrine 112-124 proenkephalin Rattus norvegicus 68-78 3410377-6 1988 2) In the control male and female rats, the 5 min pretreatment with enkephalin enhanced the pressor response to l-adrenaline, and the pressor effect of enkephalin plus l-adrenaline was suppressed by pretreatment with naloxone (2.5 mg/kg, s.c.). Naloxone 217-225 proenkephalin Rattus norvegicus 152-162 3410377-7 1988 On the other hand, in the 3WAdMx male and female rats, the pressor effect of l-adrenaline was almost completely suppressed by pretreatment with enkephalin. Epinephrine 77-89 proenkephalin Rattus norvegicus 144-154 3410377-8 1988 Moreover, pretreatment with naloxone resulted in an increase in BP after administration of enkephalin plus l-adrenaline in the 3WAdMx female rats. Naloxone 28-36 proenkephalin Rattus norvegicus 91-101 3410377-10 1988 The results suggest that the lack from immature age of catecholamine and enkephalin which originate from the adrenal medulla appears to alter the responsiveness of the BP regulatory system to exogenous catecholamine and enkephalin in the rat. Catecholamines 55-68 proenkephalin Rattus norvegicus 220-230 3419535-2 1988 In these cells, the basal release of Met5-enkephalin-Arg6-Phe7 immunoreactivity (MERF-IR) into the medium was significantly decreased when the cultures were pretreated with 0.2 microM reserpine for 3 days. Reserpine 184-193 proenkephalin Rattus norvegicus 42-52 3392667-4 1988 Enkephalin blocked the hyperpolarization of pyramidal cells evoked by application of glutamate to synaptically coupled inhibitory interneurones. Glutamic Acid 85-94 proenkephalin Rattus norvegicus 0-10 3392667-6 1988 Enkephalin hyperpolarized interneurones, most probably by increasing potassium conductance; this action was blocked by the opiate antagonist, naloxone. Potassium 69-78 proenkephalin Rattus norvegicus 0-10 3392667-6 1988 Enkephalin hyperpolarized interneurones, most probably by increasing potassium conductance; this action was blocked by the opiate antagonist, naloxone. Opiate Alkaloids 123-129 proenkephalin Rattus norvegicus 0-10 3392667-6 1988 Enkephalin hyperpolarized interneurones, most probably by increasing potassium conductance; this action was blocked by the opiate antagonist, naloxone. Naloxone 142-150 proenkephalin Rattus norvegicus 0-10 2450174-5 1988 [D-Ala2,D-Leu5]-enkephalin, which decreased cyclic AMP levels and reversed the 2-chloroadenosine-stimulated phosphorylation of tyrosine hydroxylase in differentiated PC12 cells, also reversed the stimulation of phosphorylation of the 90-kDa protein in NCB-20 cells. Cyclic AMP 44-54 proenkephalin Rattus norvegicus 16-26 2450174-5 1988 [D-Ala2,D-Leu5]-enkephalin, which decreased cyclic AMP levels and reversed the 2-chloroadenosine-stimulated phosphorylation of tyrosine hydroxylase in differentiated PC12 cells, also reversed the stimulation of phosphorylation of the 90-kDa protein in NCB-20 cells. 2-Chloroadenosine 79-96 proenkephalin Rattus norvegicus 16-26 2838796-2 1988 3H derivates: D-Ala2-enkephalin and Naloxone were used as labeled ligands. Tritium 0-2 proenkephalin Rattus norvegicus 21-31 3401900-4 1988 We visualized methionine-enkephalin fibers in the rat brain by incubating tissue sections with a specific polyclonal antibody and peroxidase-conjugated protein A. Methionine 14-24 proenkephalin Rattus norvegicus 25-35 2453939-0 1988 Modified ontogenesis of enkephalin and substance P containing neurons after perinatal exposure to morphine. Morphine 98-106 proenkephalin Rattus norvegicus 24-34 3291643-8 1988 If naloxone a potent opiate antagonist, is added to the culture medium previously to HCG or enkephalins, the Sertoli cells cytoplasma are no more immunoreactives with the anti-enkephalin serum and no LHRH material is neither visualized by immunohistochemical technique neither detected in culture media. Naloxone 3-11 proenkephalin Rattus norvegicus 92-102 3387454-3 1988 Moreover, [met]enkephalin plasma concentrations were significantly decreased in rats treated with drug affecting the serotoninergic system such as reserpine, 5,7-dihydroxytryptamine or parachlorophenylalanine, while depletion of the catecholaminergic system by alfa-methyl-thyrosine did not affect the concentrations of the peptide. Reserpine 147-156 proenkephalin Rattus norvegicus 15-25 3401900-12 1988 This standard curve was constructed by measuring endogenous concentrations of methionine-enkephalin by radioimmunoassay in specific brain regions and correlating these values with quantitative autoradiographic determinations in homologous areas of adjacent sections. Methionine 78-88 proenkephalin Rattus norvegicus 89-99 3359259-0 1988 Diurnal variations of IR-Met-enkephalin in the brain of pentylenetetrazol-kindled rats. Pentylenetetrazole 56-73 proenkephalin Rattus norvegicus 29-39 3387454-3 1988 Moreover, [met]enkephalin plasma concentrations were significantly decreased in rats treated with drug affecting the serotoninergic system such as reserpine, 5,7-dihydroxytryptamine or parachlorophenylalanine, while depletion of the catecholaminergic system by alfa-methyl-thyrosine did not affect the concentrations of the peptide. 5,7-Dihydroxytryptamine 158-181 proenkephalin Rattus norvegicus 15-25 3387454-3 1988 Moreover, [met]enkephalin plasma concentrations were significantly decreased in rats treated with drug affecting the serotoninergic system such as reserpine, 5,7-dihydroxytryptamine or parachlorophenylalanine, while depletion of the catecholaminergic system by alfa-methyl-thyrosine did not affect the concentrations of the peptide. Fenclonine 185-208 proenkephalin Rattus norvegicus 15-25 3387454-3 1988 Moreover, [met]enkephalin plasma concentrations were significantly decreased in rats treated with drug affecting the serotoninergic system such as reserpine, 5,7-dihydroxytryptamine or parachlorophenylalanine, while depletion of the catecholaminergic system by alfa-methyl-thyrosine did not affect the concentrations of the peptide. alfa-methyl-thyrosine 261-282 proenkephalin Rattus norvegicus 15-25 3188958-0 1988 Reserpine increases proenkephalin mRNA content in rat corpus striatum. Reserpine 0-9 proenkephalin Rattus norvegicus 20-33 3359259-7 1988 The results suggest that PTZ kindling in rats produces a long-lasting alteration on diurnal variations of IR-Met-enkephalin levels in limbic structures. Pentylenetetrazole 25-28 proenkephalin Rattus norvegicus 113-123 3393577-9 1988 Conformational studies in solution by CD, energy transfer and in solid state by IR spectroscopy indicated that Trp4-Met5 enkephalin adopts a beta-turn conformation. Cadmium 38-40 proenkephalin Rattus norvegicus 121-131 3129130-4 1988 Inhibition of Ca2+ influx prevented the effects of KCl-induced depolarization on the rise in Leu-Enk and on prepro-EK. Potassium Chloride 51-54 proenkephalin Rattus norvegicus 97-100 3129130-4 1988 Inhibition of Ca2+ influx prevented the effects of KCl-induced depolarization on the rise in Leu-Enk and on prepro-EK. Leucine 93-96 proenkephalin Rattus norvegicus 97-100 3129130-6 1988 By contrast, medullae grown in the presence of A23187, but in Ca2+-free medium, showed similar increases in prepro-EK mRNA and Leu-Enk, indicating an absolute requirement for Ca2+. Calcimycin 47-53 proenkephalin Rattus norvegicus 131-134 3129130-6 1988 By contrast, medullae grown in the presence of A23187, but in Ca2+-free medium, showed similar increases in prepro-EK mRNA and Leu-Enk, indicating an absolute requirement for Ca2+. Leucine 127-130 proenkephalin Rattus norvegicus 131-134 2827687-1 1988 The effects of fentanyl isothiocyanate (FIT) and pertussis toxin on the binding of [3H]D-Ala2, D-Leu5-enkephalin ([3H]DADLE) to rat brain membranes were compared. fentanyl isothiocyanate 15-38 proenkephalin Rattus norvegicus 102-112 2827687-1 1988 The effects of fentanyl isothiocyanate (FIT) and pertussis toxin on the binding of [3H]D-Ala2, D-Leu5-enkephalin ([3H]DADLE) to rat brain membranes were compared. fentanyl isothiocyanate 40-43 proenkephalin Rattus norvegicus 102-112 2827687-1 1988 The effects of fentanyl isothiocyanate (FIT) and pertussis toxin on the binding of [3H]D-Ala2, D-Leu5-enkephalin ([3H]DADLE) to rat brain membranes were compared. Tritium 84-86 proenkephalin Rattus norvegicus 102-112 2827687-1 1988 The effects of fentanyl isothiocyanate (FIT) and pertussis toxin on the binding of [3H]D-Ala2, D-Leu5-enkephalin ([3H]DADLE) to rat brain membranes were compared. Tritium 115-117 proenkephalin Rattus norvegicus 102-112 2835995-3 1988 The inhibiting effect of GppNp on the formation of the morphine and D-Ala2, D-Leu5-enkephalin complexes with high affinity opioid receptor binding sites is due to the decrease of the ligand affinity for the corresponding sites. LHRH (1-6) 25-30 proenkephalin Rattus norvegicus 83-93 2963966-0 1988 Effect of chronic morphine on plasma and brain beta endorphin and methionine enkephalin in pregnant rats and in their fetuses or newborn. Morphine 18-26 proenkephalin Rattus norvegicus 77-87 3342116-0 1988 Behavioral cross-sensitization between cocaine and enkephalin in the A10 dopamine region. Cocaine 39-46 proenkephalin Rattus norvegicus 51-61 3377707-1 1988 The effect of opiate peptides (leu-enkephalin, met-enkephalin and beta-endorphin) as well as of enkephalin synthetic analogs (two tetrapeptides and dalargin hexapeptide) on the activity of blood enzymes CPK and LDG1, the scope of myocardial infarction and ultrastructure of periinfarction cardiomyocytes has been studied on 200 white outbred rats with simulated myocardial infarction. Methionine 47-50 proenkephalin Rattus norvegicus 51-61 3342116-0 1988 Behavioral cross-sensitization between cocaine and enkephalin in the A10 dopamine region. Dopamine 73-81 proenkephalin Rattus norvegicus 51-61 2833940-5 1988 The experimental results obtained through the use of the difference technique led to a kinetic model of interaction between morphine and D-Ala2, D-Leu5-enkephalin with rat brain receptors. Morphine 124-132 proenkephalin Rattus norvegicus 152-162 3342116-3 1988 The data in this report demonstrate that rats receiving daily injection of enkephalin analogue into the A10 have an enhanced motor stimulant response to intraperitoneal cocaine, but not to saline. Cocaine 169-176 proenkephalin Rattus norvegicus 75-85 3342116-4 1988 Conversely, rats receiving daily injection of intraperitoneal cocaine have an enhanced motor stimulant response to intra-A10 injection of enkephalin analogue. Cocaine 62-69 proenkephalin Rattus norvegicus 138-148 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. alanylhistidine 164-167 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. Sepharose 167-176 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. DEAE-Cellulose 148-162 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. Durapatite 178-193 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. sephadex 195-209 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. Cibacron Blue F 3GA 211-223 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. ah-sepharose 164-176 proenkephalin Rattus norvegicus 44-54 3172279-1 1988 The major cytosolic and membrane-associated enkephalin-degrading aminopeptidases were purified in parallel by column chromatography successively on DEAE-cellulose, AH-Sepharose, hydroxylapatite, Sephadex G-200, Affigel Blue, AH-Sepharose, and hydroxylapatite. Durapatite 243-258 proenkephalin Rattus norvegicus 44-54 3172279-9 1988 Mn2+ activates SI on Met-enkephalin degradation, but inhibits SII, MI, and MII. Manganese(2+) 0-4 proenkephalin Rattus norvegicus 25-35 2894701-0 1988 Morphine-like discriminative stimulus effects of opioid peptides: possible modulatory role of D-Ala2-D-Leu5-enkephalin (DADL) and dynorphin A (1-13). Morphine 0-8 proenkephalin Rattus norvegicus 108-118 3127844-3 1988 In the striatum, each antidepressant decreased the enkephalin content, while lithium or haloperidol, having an antimanic effect, increased the enkephalin content. Lithium 77-84 proenkephalin Rattus norvegicus 143-153 3127844-3 1988 In the striatum, each antidepressant decreased the enkephalin content, while lithium or haloperidol, having an antimanic effect, increased the enkephalin content. Haloperidol 88-99 proenkephalin Rattus norvegicus 143-153 3146768-15 1988 The results are discussed in terms of a modulatory role of endogenous enkephalin on mesolimbic dopamine neurons. Dopamine 95-103 proenkephalin Rattus norvegicus 70-80 2828802-2 1988 Binding saturation experiments were performed in rat brain crude membrane preparations with the opioid mu-selective ligand [3H]-[D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO), using a sequential procedure. Tritium 124-126 proenkephalin Rattus norvegicus 151-161 2828802-2 1988 Binding saturation experiments were performed in rat brain crude membrane preparations with the opioid mu-selective ligand [3H]-[D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO), using a sequential procedure. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 163-167 proenkephalin Rattus norvegicus 151-161 3441305-0 1987 Anatomical study of enkephalin gene expression in the rat forebrain following haloperidol treatment. Haloperidol 78-89 proenkephalin Rattus norvegicus 20-30 2894701-4 1988 In contrast, DPLPE[D-Pen2,L-Pen5)enkephalin], which has much greater delta receptor selectivity than does DADL, and dynorphin A(1-13) (0.1-10 micrograms), a kappa-receptor agonist, engendered choice responding appropriate for saline. d-pen2 19-25 proenkephalin Rattus norvegicus 33-43 2889804-0 1987 Neonatal and adult 6-hydroxydopamine-induced lesions differentially alter tachykinin and enkephalin gene expression. Oxidopamine 19-36 proenkephalin Rattus norvegicus 89-99 2892145-8 1987 The CS release evoked by morphine, D-Met-Pro-Enk, Met-Enk and DYN was demonstrable only in the morning when the basal CS level was significantly lower than in the afternoon. Corticosterone 4-6 proenkephalin Rattus norvegicus 45-48 2892145-8 1987 The CS release evoked by morphine, D-Met-Pro-Enk, Met-Enk and DYN was demonstrable only in the morning when the basal CS level was significantly lower than in the afternoon. Corticosterone 4-6 proenkephalin Rattus norvegicus 54-57 2892145-8 1987 The CS release evoked by morphine, D-Met-Pro-Enk, Met-Enk and DYN was demonstrable only in the morning when the basal CS level was significantly lower than in the afternoon. Corticosterone 118-120 proenkephalin Rattus norvegicus 45-48 2892145-8 1987 The CS release evoked by morphine, D-Met-Pro-Enk, Met-Enk and DYN was demonstrable only in the morning when the basal CS level was significantly lower than in the afternoon. Corticosterone 118-120 proenkephalin Rattus norvegicus 54-57 2892574-1 1987 In opiate-naive rats, the endogenous opioid peptides, beta-endorphin, dynorphin(1-13) and Met-Enk-Arg-Phe (MEAP) and the synthetic enkephalin analogue D-Ala2-D-Leu5-Enk (DADLE) potently stimulated plasma corticosterone in a dose-dependent, naloxone reversible manner. d-ala2-d-leu5-enk 151-168 proenkephalin Rattus norvegicus 131-141 2889804-3 1987 [Met5]Enkephalin (ME) content was increased in striatal tissue from both 6-OHDA-lesioned groups when compared with unlesioned controls. Oxidopamine 73-79 proenkephalin Rattus norvegicus 6-16 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. Potassium 44-53 proenkephalin Rattus norvegicus 140-150 3479550-3 1987 When tested on slices of rat globus pallidus in the presence of bestatin, to block the aminopeptidase pathway of enkephalin degradation, both Thiorphan enantiomers ensured a complete protection of endogenous (Met5)enkephalin released by depolarization and a suppression of the increase in the extracellular levels of Tyr-Gly-Gly, a characteristic enkephalin metabolite. Thiorphan 142-151 proenkephalin Rattus norvegicus 214-224 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. Potassium 44-53 proenkephalin Rattus norvegicus 180-190 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. Potassium 44-53 proenkephalin Rattus norvegicus 180-190 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. Potassium 44-53 proenkephalin Rattus norvegicus 180-190 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. gly5-ol 172-179 proenkephalin Rattus norvegicus 180-190 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. gly5-ol 172-179 proenkephalin Rattus norvegicus 180-190 2824980-3 1987 Tolerance to the opioid-induced increase in potassium conductance was observed, and this was more pronounced for normorphine than for [Met5]enkephalin and [D-Ala2, Mephe4, Gly5-ol]enkephalin: experiments with the irreversible receptor blocker beta-chlornaltrexamine indicated that normorphine had lower intrinsic efficacy than [Met5]enkephalin and [D-Ala2 MePhe4, Gly5-ol]enkephalin. gly5-ol 172-179 proenkephalin Rattus norvegicus 180-190 3441443-0 1987 Nicotine-induced alterations in brain regional concentrations of native and cryptic Met- and Leu-enkephalin. Nicotine 0-8 proenkephalin Rattus norvegicus 97-107 3441443-4 1987 Also, the distributions of native and cryptic Met-enkephalin were distinct from that of Leu-enkephalin. Leucine 88-91 proenkephalin Rattus norvegicus 92-102 3441443-8 1987 Repeated short-term administration of nicotine, 0.1 mg/kg IP six times at 30 min intervals, produced significant increases in native and cryptic Met-enkephalin in striatum, consistent with an increase in neuronal release of Met-enkephalin together with increases in synthesis and processing of proenkephalin A in this brain region. Nicotine 38-46 proenkephalin Rattus norvegicus 149-159 2823997-10 1987 These results suggest that the administration of TRH or the blockade of delta-opioid receptors, resulting in an inhibition of endogenous enkephalin transmission, may significantly inhibit ethanol narcosis in the rat. Ethanol 188-195 proenkephalin Rattus norvegicus 137-147 3441443-8 1987 Repeated short-term administration of nicotine, 0.1 mg/kg IP six times at 30 min intervals, produced significant increases in native and cryptic Met-enkephalin in striatum, consistent with an increase in neuronal release of Met-enkephalin together with increases in synthesis and processing of proenkephalin A in this brain region. Nicotine 38-46 proenkephalin Rattus norvegicus 228-238 3441443-8 1987 Repeated short-term administration of nicotine, 0.1 mg/kg IP six times at 30 min intervals, produced significant increases in native and cryptic Met-enkephalin in striatum, consistent with an increase in neuronal release of Met-enkephalin together with increases in synthesis and processing of proenkephalin A in this brain region. Nicotine 38-46 proenkephalin Rattus norvegicus 294-309 3441443-9 1987 This regimen of nicotine also decreased levels of native Met-enkephalin and of both native and cryptic Leu-enkephalin in neurointermediate lobe, consistent with nicotine-induced release of both proenkephalin A- and prodynorphin-derived peptides from neurointermediate lobe. Nicotine 16-24 proenkephalin Rattus norvegicus 61-71 3441443-9 1987 This regimen of nicotine also decreased levels of native Met-enkephalin and of both native and cryptic Leu-enkephalin in neurointermediate lobe, consistent with nicotine-induced release of both proenkephalin A- and prodynorphin-derived peptides from neurointermediate lobe. Nicotine 16-24 proenkephalin Rattus norvegicus 107-117 3441443-9 1987 This regimen of nicotine also decreased levels of native Met-enkephalin and of both native and cryptic Leu-enkephalin in neurointermediate lobe, consistent with nicotine-induced release of both proenkephalin A- and prodynorphin-derived peptides from neurointermediate lobe. Nicotine 16-24 proenkephalin Rattus norvegicus 194-209 3441443-9 1987 This regimen of nicotine also decreased levels of native Met-enkephalin and of both native and cryptic Leu-enkephalin in neurointermediate lobe, consistent with nicotine-induced release of both proenkephalin A- and prodynorphin-derived peptides from neurointermediate lobe. Nicotine 161-169 proenkephalin Rattus norvegicus 194-209 2890224-12 1987 Furthermore, this study demonstrated that intact dentate granule cells are essential for KA- and enkephalin-induced WDS, since a colchicine injection into the ventral hippocampus, which selectively destroys granule cells, abolished this behavior. Colchicine 129-139 proenkephalin Rattus norvegicus 97-107 2823997-12 1987 These results also indicate that endogenous enkephalin release plays an important role in ethanol narcosis. Ethanol 90-97 proenkephalin Rattus norvegicus 44-54 2446706-1 1987 The ventral aspect of the medulla oblongata of colchicine-treated rats was examined immunohistochemically using mouse monoclonal antibodies raised against somatostatin (SOM) and rabbit polyclonal antibodies to methionine enkephalin (ENK). Colchicine 47-57 proenkephalin Rattus norvegicus 221-231 3429581-4 1987 The facile fluorescence detection of N-terminal tyrosine-containing fragments produced from methionine-enkephalin by enzymatic degradation using a rat brain homogenate was achieved by comparison with the ultraviolet absorption detection at 215 nm. Tyrosine 48-56 proenkephalin Rattus norvegicus 103-113 3429581-4 1987 The facile fluorescence detection of N-terminal tyrosine-containing fragments produced from methionine-enkephalin by enzymatic degradation using a rat brain homogenate was achieved by comparison with the ultraviolet absorption detection at 215 nm. Methionine 92-102 proenkephalin Rattus norvegicus 103-113 2446706-1 1987 The ventral aspect of the medulla oblongata of colchicine-treated rats was examined immunohistochemically using mouse monoclonal antibodies raised against somatostatin (SOM) and rabbit polyclonal antibodies to methionine enkephalin (ENK). Colchicine 47-57 proenkephalin Rattus norvegicus 233-236 2446203-4 1987 Methionine-enkephalin-immunoreactive neurons were twice as numerous as the substance P-immunoreactive cells and seven times more numerous than the dynorphin B-positive neurons. Methionine 0-10 proenkephalin Rattus norvegicus 11-21 2820969-2 1987 [D-Ala2,Leu5,Cys6]Enkephalin (DALCE) is a synthetic enkephalin analog which contains a sulfhydryl group. enkephalin-Leu, Ala(2)-Cys(6)- 30-35 proenkephalin Rattus norvegicus 18-28 2820969-2 1987 [D-Ala2,Leu5,Cys6]Enkephalin (DALCE) is a synthetic enkephalin analog which contains a sulfhydryl group. enkephalin-Leu, Ala(2)-Cys(6)- 30-35 proenkephalin Rattus norvegicus 52-62 2820969-5 1987 Using 2 nM [3H][D-Pen2,D-Pen5]enkephalin (where Pen represents penicillamine) to label delta-sites, 50% loss of sites occurred at about 3 microM DALCE. Penicillamine 63-76 proenkephalin Rattus norvegicus 30-40 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. [d-ala2,d-leu5 36-50 proenkephalin Rattus norvegicus 17-27 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. [d-ala2,d-leu5 36-50 proenkephalin Rattus norvegicus 51-61 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. [d-ala2,d-leu5 36-50 proenkephalin Rattus norvegicus 51-61 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. [d-ala2,d-leu5 36-50 proenkephalin Rattus norvegicus 51-61 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. [d-ala2,d-leu5 36-50 proenkephalin Rattus norvegicus 51-61 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. Sodium Chloride 183-187 proenkephalin Rattus norvegicus 17-27 2820969-7 1987 By contrast, the enkephalin analogs [D-Ala2,D-Leu5]enkephalin, [D-Ser2,Leu5,Thr6]enkephalin, [D-Pen2,D-Pen5]enkephalin, and [D-Ala2,D-Leu5,Lys6]enkephalin were readily dissociated by NaCl and Gpp(NH)p, producing negligible loss at 3 microM. Guanylyl Imidodiphosphate 192-200 proenkephalin Rattus norvegicus 17-27 2891076-0 1987 Lithium and haloperidol differentially alter the dynorphin A (1-8) and enkephalin levels in the neurointermediate lobe of rat pituitary. Lithium 0-7 proenkephalin Rattus norvegicus 71-81 2891076-0 1987 Lithium and haloperidol differentially alter the dynorphin A (1-8) and enkephalin levels in the neurointermediate lobe of rat pituitary. Haloperidol 12-23 proenkephalin Rattus norvegicus 71-81 3041142-2 1987 Competing potencies of both drugs against [3H]morphine and [3H]leucine enkephalin bindings were extremely decreased by either glucuronate or sulfate conjugation at the 3-position. Glucuronic Acid 126-137 proenkephalin Rattus norvegicus 71-81 3041142-2 1987 Competing potencies of both drugs against [3H]morphine and [3H]leucine enkephalin bindings were extremely decreased by either glucuronate or sulfate conjugation at the 3-position. Sulfates 141-148 proenkephalin Rattus norvegicus 71-81 3041142-3 1987 On the other hand, the potencies of morphine and nalorphine against [3H]leucine enkephalin binding were considerably enhanced by the conjugations at the 6-position, whereas the potencies against [3H]morphine binding were decreased. Morphine 36-44 proenkephalin Rattus norvegicus 80-90 3041142-3 1987 On the other hand, the potencies of morphine and nalorphine against [3H]leucine enkephalin binding were considerably enhanced by the conjugations at the 6-position, whereas the potencies against [3H]morphine binding were decreased. Nalorphine 49-59 proenkephalin Rattus norvegicus 80-90 3041142-3 1987 On the other hand, the potencies of morphine and nalorphine against [3H]leucine enkephalin binding were considerably enhanced by the conjugations at the 6-position, whereas the potencies against [3H]morphine binding were decreased. Tritium 69-71 proenkephalin Rattus norvegicus 80-90 3653029-0 1987 Proenkephalin gene expression in the PC12 pheochromocytoma cell line: stimulation by sodium butyrate. Butyric Acid 85-100 proenkephalin Rattus norvegicus 0-13 3653029-1 1987 The differentiation promoter sodium butyrate increases the content of Met5-enkephalin-Arg6-Gly7-Leu8 (Met5-enk-RGL)-immunoreactive peptides in PC12 pheochromocytoma cells, which, unlike mature adrenomedullary chromaffin cells, contain exceedingly low levels of opioid peptides. Butyric Acid 29-44 proenkephalin Rattus norvegicus 75-85 3653029-1 1987 The differentiation promoter sodium butyrate increases the content of Met5-enkephalin-Arg6-Gly7-Leu8 (Met5-enk-RGL)-immunoreactive peptides in PC12 pheochromocytoma cells, which, unlike mature adrenomedullary chromaffin cells, contain exceedingly low levels of opioid peptides. Butyric Acid 29-44 proenkephalin Rattus norvegicus 75-78 3653029-2 1987 These butyrate-induced enkephalin-immunoreactive peptides, which are specific products of the proenkephalin gene, consist principally of two high mol wt forms of amino-terminally extended Met5-enk-RGL. Butyrates 6-14 proenkephalin Rattus norvegicus 23-33 3653029-2 1987 These butyrate-induced enkephalin-immunoreactive peptides, which are specific products of the proenkephalin gene, consist principally of two high mol wt forms of amino-terminally extended Met5-enk-RGL. Butyrates 6-14 proenkephalin Rattus norvegicus 94-107 3653029-2 1987 These butyrate-induced enkephalin-immunoreactive peptides, which are specific products of the proenkephalin gene, consist principally of two high mol wt forms of amino-terminally extended Met5-enk-RGL. Butyrates 6-14 proenkephalin Rattus norvegicus 23-26 3653029-4 1987 The low mol wt Met5-enk-RGL-immunoreactive peptide found in butyrate-treated cells is similar in size to authentic Met5-enk-RGL, which is not found in the adrenal medulla of the adult rat. Butyrates 60-68 proenkephalin Rattus norvegicus 20-23 3653029-6 1987 In PC12 cells, the butyrate-stimulated elevation in the content of Met5-enk-RGL-immunoreactive peptides may involve changes in transcription, since the peptide increase is preceded by a 2- to 3-fold increase in the level of proenkephalin mRNA. Butyrates 19-27 proenkephalin Rattus norvegicus 72-75 3653029-6 1987 In PC12 cells, the butyrate-stimulated elevation in the content of Met5-enk-RGL-immunoreactive peptides may involve changes in transcription, since the peptide increase is preceded by a 2- to 3-fold increase in the level of proenkephalin mRNA. Butyrates 19-27 proenkephalin Rattus norvegicus 224-237 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. kelatorphan 22-33 proenkephalin Rattus norvegicus 93-103 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. kelatorphan 22-33 proenkephalin Rattus norvegicus 109-119 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. ubenimex 35-43 proenkephalin Rattus norvegicus 93-103 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. ubenimex 35-43 proenkephalin Rattus norvegicus 109-119 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. Thiorphan 48-57 proenkephalin Rattus norvegicus 93-103 3668866-4 1987 Peptidase inhibitors (kelatorphan, bestatin and thiorphan) each increased the potency of Met-enkephalin, Leu-enkephalin and metorphamide but had no effect of their own on the LC neurons. Thiorphan 48-57 proenkephalin Rattus norvegicus 109-119 3668866-5 1987 Kelatorphan (20 microM) produced a 7-fold shift to the left of the Met-enkephalin dose-response curve. kelatorphan 0-11 proenkephalin Rattus norvegicus 71-81 3668866-7 1987 Thiorphan (3 microM) and bestatin (20 microM) each had a smaller potentiating effect on the Met-enkephalin hyperpolarization. Thiorphan 0-9 proenkephalin Rattus norvegicus 96-106 3668866-7 1987 Thiorphan (3 microM) and bestatin (20 microM) each had a smaller potentiating effect on the Met-enkephalin hyperpolarization. ubenimex 25-33 proenkephalin Rattus norvegicus 96-106 2820799-2 1987 Conformationally restricted enkephalin analogs containing E-cyclopropylphenylalanine (delta EPhe), [D-Ala2, (2R,3S)-delta EPhe4,Leu5]enkephalin and its (2S,3R) isomer, were evaluated in receptor-binding assays using rat brain and in assays using muscle preparations. e-cyclopropylphenylalanine 58-84 proenkephalin Rattus norvegicus 28-38 2826357-0 1987 Synthesis and binding properties to DNA and to opioid receptors of enkephalin-ellipticinium conjugates. ellipticinium 78-91 proenkephalin Rattus norvegicus 67-77 2826357-1 1987 In order to specifically direct cytotoxic agents against tumor cells bearing delta opioid receptors, the DNA intercalating agents ellipticine and 9-OH-ellipticine were coupled by quaternarization of the pyridine nitrogen to an enkephalin modified pentapeptide through a short chemical linker. ellipticine 130-141 proenkephalin Rattus norvegicus 227-237 2826357-1 1987 In order to specifically direct cytotoxic agents against tumor cells bearing delta opioid receptors, the DNA intercalating agents ellipticine and 9-OH-ellipticine were coupled by quaternarization of the pyridine nitrogen to an enkephalin modified pentapeptide through a short chemical linker. 9-oh-ellipticine 146-162 proenkephalin Rattus norvegicus 227-237 3670607-6 1987 In experiments with sympathetic ganglia, it was demonstrated that a significant growth-promoting effect is exerted by peptides taken at concentrations of 10(-8) M to 10(-14) M. Naloxone does not eliminate the effects of peptides, but stimulates the growth at 10(-5) M to 10(-7) M. Studies with spinal cord revealed that naloxone (10(-6) M) enhances the response to [Leu]-enkephalin (10(-9) M). Naloxone 177-185 proenkephalin Rattus norvegicus 371-381 2823161-10 1987 For example, in vitro studies of radioligand binding showed that ketamine and morphine were four times more effective in inhibiting the binding of [3H]dihydromorphine than that of [3H] [D-Ala2, D-Leu5] enkephalin. Ketamine 65-73 proenkephalin Rattus norvegicus 202-212 2823161-10 1987 For example, in vitro studies of radioligand binding showed that ketamine and morphine were four times more effective in inhibiting the binding of [3H]dihydromorphine than that of [3H] [D-Ala2, D-Leu5] enkephalin. Morphine 78-86 proenkephalin Rattus norvegicus 202-212 3297170-1 1987 Enkephalinase B from rat brain membrane which hydrolyzes enkephalin at the Gly-Gly bond was purified about 9400-fold to apparent electrophoretic homogeneity. Glycine 75-78 proenkephalin Rattus norvegicus 57-67 3297170-1 1987 Enkephalinase B from rat brain membrane which hydrolyzes enkephalin at the Gly-Gly bond was purified about 9400-fold to apparent electrophoretic homogeneity. Glycine 79-82 proenkephalin Rattus norvegicus 57-67 2890116-0 1987 Modulation by enkephalin analogues and neuroleptics of apomorphine-induced stereotypy and turning behaviour in rats. Apomorphine 55-66 proenkephalin Rattus norvegicus 14-24 3664275-1 1987 The influence of enkephalin-containing neurons in the subnucleus caudalis of the spinal trigeminal nucleus (STN caudalis) on the subnucleus oralis of the STN (STN oralis) was examined using chloral hydrate-anesthetized rats. Streptonigrin 108-111 proenkephalin Rattus norvegicus 17-27 3664275-1 1987 The influence of enkephalin-containing neurons in the subnucleus caudalis of the spinal trigeminal nucleus (STN caudalis) on the subnucleus oralis of the STN (STN oralis) was examined using chloral hydrate-anesthetized rats. Streptonigrin 154-157 proenkephalin Rattus norvegicus 17-27 3664275-4 1987 Furthermore, naloxone-reversible inhibition of tooth pulp-induced spikes of the type B1 interneurons were also observed during iontophoretic application of enkephalin. Naloxone 13-21 proenkephalin Rattus norvegicus 156-166 2956945-1 1987 The effect of barium and potassium on the secretion and biosynthesis of enkephalin in bovine chromaffin cells, and prolactin and beta-endorphin in rat anterior pituitary cells, was examined to determine whether calcium-dependent secretion and biosynthesis are mediated by the same or by different calcium targets within the neuroendocrine cell. Potassium 25-34 proenkephalin Rattus norvegicus 72-82 2956945-6 1987 We conclude that calcium acts at two different intracellular targets to activate secretion versus biosynthesis of both enkephalin and prolactin. Calcium 17-24 proenkephalin Rattus norvegicus 119-129 3037220-3 1987 The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin was synthesized in a radioactive form, and the resulting compound (3H-DALECK) was used to label opioid receptors. 1,3-Dichloroacetone 4-23 proenkephalin Rattus norvegicus 50-60 3037220-3 1987 The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin was synthesized in a radioactive form, and the resulting compound (3H-DALECK) was used to label opioid receptors. Tritium 128-130 proenkephalin Rattus norvegicus 50-60 3037220-3 1987 The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin was synthesized in a radioactive form, and the resulting compound (3H-DALECK) was used to label opioid receptors. tyrosyl-alanyl-glycyl-phenylalanyl-leucine chloromethyl ketone 131-137 proenkephalin Rattus norvegicus 50-60 3305599-5 1987 Some methionine-enkephalin-Arg6-Gly7-Leu8-like immunoreactive perikarya were distributed in the lateral reticular nucleus, the nucleus of the solitary tract, and the raphe magnus nucleus, where monoaminergic neurons were also detected. arg6-gly7-leu8 27-41 proenkephalin Rattus norvegicus 16-26 3670607-6 1987 In experiments with sympathetic ganglia, it was demonstrated that a significant growth-promoting effect is exerted by peptides taken at concentrations of 10(-8) M to 10(-14) M. Naloxone does not eliminate the effects of peptides, but stimulates the growth at 10(-5) M to 10(-7) M. Studies with spinal cord revealed that naloxone (10(-6) M) enhances the response to [Leu]-enkephalin (10(-9) M). Peptides 118-126 proenkephalin Rattus norvegicus 371-381 2440523-1 1987 Unilateral 6-hydroxydopamine lesions of the mesostriatal dopaminergic system in the rat resulted in a decrease of substance P-immunoreactivity in the ventral striatum, and in a heterogeneously distributed increase of enkephalin-immunoreactivity in the dorsal and ventral striatum and the globus pallidus. Oxidopamine 11-28 proenkephalin Rattus norvegicus 217-227 2888045-1 1987 Intracerebroventricular administration of phelorphan (158 nmol/2 microliters), a blocker of dipeptidylaminopeptidase (enkephalinase B) and other enzymes involved in the enkephalin biodegradation, inhibited in chronic morphine-dependent rats, the occurrence of some of the naloxone-precipitated withdrawal symptoms. phelorphan 42-52 proenkephalin Rattus norvegicus 118-128 3620936-0 1987 Enkephalin release into the ventral tegmental area in response to stress: modulation of mesocorticolimbic dopamine. Dopamine 106-114 proenkephalin Rattus norvegicus 0-10 3620936-1 1987 Enkephalin-containing neuronal fibers and perikarya, and opioid receptors are present in the A10 dopamine (DA) region, and many studies have implicated enkephalin as a neuromodulator of A10 DA neurons projecting to the prefrontal cortex and certain limbic nuclei. Dopamine 97-105 proenkephalin Rattus norvegicus 0-10 3620936-1 1987 Enkephalin-containing neuronal fibers and perikarya, and opioid receptors are present in the A10 dopamine (DA) region, and many studies have implicated enkephalin as a neuromodulator of A10 DA neurons projecting to the prefrontal cortex and certain limbic nuclei. Dopamine 97-105 proenkephalin Rattus norvegicus 152-162 3620936-1 1987 Enkephalin-containing neuronal fibers and perikarya, and opioid receptors are present in the A10 dopamine (DA) region, and many studies have implicated enkephalin as a neuromodulator of A10 DA neurons projecting to the prefrontal cortex and certain limbic nuclei. Dopamine 107-109 proenkephalin Rattus norvegicus 0-10 3620936-1 1987 Enkephalin-containing neuronal fibers and perikarya, and opioid receptors are present in the A10 dopamine (DA) region, and many studies have implicated enkephalin as a neuromodulator of A10 DA neurons projecting to the prefrontal cortex and certain limbic nuclei. Dopamine 107-109 proenkephalin Rattus norvegicus 152-162 3039108-0 1987 Naloxonazine effects on the interaction of enkephalin analogs with mu-1, mu and delta opioid binding sites in rat brain membranes. naloxonazine 0-12 proenkephalin Rattus norvegicus 43-53 3039108-5 1987 Preincubation of membranes with 50 nM naloxonazine resulted in a dramatic, nearly 2-fold reduction in the binding of [3H][D-Ala2, D-Leu5]-enkephalin and [3H][D-Ala2, MePhe4, Gly-ol5]-enkephalin relative to the controls. naloxonazine 38-50 proenkephalin Rattus norvegicus 138-148 3039108-5 1987 Preincubation of membranes with 50 nM naloxonazine resulted in a dramatic, nearly 2-fold reduction in the binding of [3H][D-Ala2, D-Leu5]-enkephalin and [3H][D-Ala2, MePhe4, Gly-ol5]-enkephalin relative to the controls. naloxonazine 38-50 proenkephalin Rattus norvegicus 183-193 3039108-5 1987 Preincubation of membranes with 50 nM naloxonazine resulted in a dramatic, nearly 2-fold reduction in the binding of [3H][D-Ala2, D-Leu5]-enkephalin and [3H][D-Ala2, MePhe4, Gly-ol5]-enkephalin relative to the controls. Tritium 118-120 proenkephalin Rattus norvegicus 138-148 3039108-5 1987 Preincubation of membranes with 50 nM naloxonazine resulted in a dramatic, nearly 2-fold reduction in the binding of [3H][D-Ala2, D-Leu5]-enkephalin and [3H][D-Ala2, MePhe4, Gly-ol5]-enkephalin relative to the controls. Tritium 118-120 proenkephalin Rattus norvegicus 183-193 3620936-5 1987 It has been shown that daily exposure to footshock enhances the motor stimulant effect of intra-VTA injection of the enkephalin analogue, [D-Ala2,Met]-enkephalinamide (DALA). [d-ala2,met]-enkephalinamide 138-166 proenkephalin Rattus norvegicus 117-127 3038268-8 1987 Delta binding sites were labeled with 125I-[D-Ala2,D-Leu5]enkephalin in the presence of the morphiceptin analog PL-032. CHEMBL267708 112-118 proenkephalin Rattus norvegicus 58-68 3109687-0 1987 Analgesic properties of valproic acid might be related to activation of pro-enkephalin system in rat brain. Valproic Acid 24-37 proenkephalin Rattus norvegicus 76-86 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Dopamine 29-37 proenkephalin Rattus norvegicus 48-58 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Dopamine 29-37 proenkephalin Rattus norvegicus 60-63 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Dopamine 29-37 proenkephalin Rattus norvegicus 139-142 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Oxidopamine 174-191 proenkephalin Rattus norvegicus 48-58 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Oxidopamine 174-191 proenkephalin Rattus norvegicus 60-63 3110407-1 1987 The hypothesis that striatal dopamine regulates enkephalin (ENK) synthesis is supported by the increase of striatal proenkephalin mRNA and ENK after intranigral injection of 6-hydroxydopamine. Oxidopamine 174-191 proenkephalin Rattus norvegicus 139-142 3110407-3 1987 Daily administration of 140 mumol/kg s.c. of the D-2 antagonist I-sulpiride twice daily for 2 weeks produces a 30% decrease in the content of striatal proenkephalin mRNA and ENK. i-sulpiride 64-75 proenkephalin Rattus norvegicus 174-177 3110407-6 1987 Removal of this neurally mediated regulation either by a specific pharmacologic blockage of D-1 or by lesioning with 6-hydroxydopamine increases the biosynthesis of ENK. Oxidopamine 117-134 proenkephalin Rattus norvegicus 165-168 3110407-7 1987 The increase of ENK biosynthesis elicited by denervation with 6-hydroxydopamine cannot be due to the endogenous activation of D-2 receptors and must be due to the inactivation of the tonic inhibition exerted by D-1 receptors. Oxidopamine 62-79 proenkephalin Rattus norvegicus 16-19 3607463-4 1987 Injection of methionine-enkephalin, an endogenous opioid peptide, also resulted in a decrease in the proportion of cells incorporating [3H]thymidine. 3h]thymidine 136-148 proenkephalin Rattus norvegicus 24-34 3607463-5 1987 Concomitant injection of 1 mg/kg naloxone, however, blocked the inhibitory effects of methionine-enkephalin on cell division but did not itself affect cell generation. Naloxone 33-41 proenkephalin Rattus norvegicus 97-107 2884609-2 1987 Methionine (Met)-enkephalin did not affect the extracellular potassium level at rest but suppressed the potassium response elicited by afferent volleys. Potassium 104-113 proenkephalin Rattus norvegicus 17-27 2884609-4 1987 In the chronically deafferent spinal cord combined with the block of synaptic transmission by Mg2+, Met-enkephalin suppressed the transient rise of the extracellular potassium concentration induced by L-glutamate. magnesium ion 94-98 proenkephalin Rattus norvegicus 104-114 2884609-4 1987 In the chronically deafferent spinal cord combined with the block of synaptic transmission by Mg2+, Met-enkephalin suppressed the transient rise of the extracellular potassium concentration induced by L-glutamate. Potassium 166-175 proenkephalin Rattus norvegicus 104-114 2884609-4 1987 In the chronically deafferent spinal cord combined with the block of synaptic transmission by Mg2+, Met-enkephalin suppressed the transient rise of the extracellular potassium concentration induced by L-glutamate. Glutamic Acid 201-212 proenkephalin Rattus norvegicus 104-114 3297184-0 1987 [Participation of leu-enkephalin in regulating carbohydrate metabolism]. Carbohydrates 47-59 proenkephalin Rattus norvegicus 22-32 3109687-6 1987 The Met-enkephalin-Arg-Gly-Leu levels are affected by VPA administration in a more complex pattern. Arginine 19-22 proenkephalin Rattus norvegicus 8-18 3109687-6 1987 The Met-enkephalin-Arg-Gly-Leu levels are affected by VPA administration in a more complex pattern. Glycine 23-26 proenkephalin Rattus norvegicus 8-18 3109687-6 1987 The Met-enkephalin-Arg-Gly-Leu levels are affected by VPA administration in a more complex pattern. Leucine 27-30 proenkephalin Rattus norvegicus 8-18 3109687-6 1987 The Met-enkephalin-Arg-Gly-Leu levels are affected by VPA administration in a more complex pattern. Valproic Acid 54-57 proenkephalin Rattus norvegicus 8-18 3032303-2 1987 Intracerebroventricular dose of 2 micrograms diminished the manifestations to a lesser extent Dalargin only at a dose exceeding 500 micrograms intraperitoneally decreased significantly the in vivo binding of 3H-D-Ala2, D-Leu5-enkephalin with brain opiate receptors. 3h-d-ala2 208-217 proenkephalin Rattus norvegicus 226-236 2884003-0 1987 Glutamate-evoked release of endogenous brain dopamine: inhibition by an excitatory amino acid antagonist and an enkephalin analogue. Glutamic Acid 0-9 proenkephalin Rattus norvegicus 112-122 2884003-0 1987 Glutamate-evoked release of endogenous brain dopamine: inhibition by an excitatory amino acid antagonist and an enkephalin analogue. Dopamine 45-53 proenkephalin Rattus norvegicus 112-122 3029324-3 1987 Release was also inhibited (maximally by 40-50%) by morphine (EC50 = 5-10 nM), [Leu5]enkephalin (EC50 = approximately 300 nM), [D-Ala2,D-Leu5]enkephalin (DADLE), and Tyr-D-Ala-Gly-(NMe)Phe-Gly-ol (DAGO) (EC50 values = approximately 30 nM). Morphine 52-60 proenkephalin Rattus norvegicus 142-152 2884003-1 1987 The present study examined the effect of a selective delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADL) on the spontaneous and the L-glutamic acid (L-Glu)-evoked release of endogenous dopamine from superfused slices of rat caudate-putamen. Glutamic Acid 144-159 proenkephalin Rattus norvegicus 99-109 2884003-1 1987 The present study examined the effect of a selective delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADL) on the spontaneous and the L-glutamic acid (L-Glu)-evoked release of endogenous dopamine from superfused slices of rat caudate-putamen. Glutamic Acid 161-166 proenkephalin Rattus norvegicus 99-109 2884003-1 1987 The present study examined the effect of a selective delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADL) on the spontaneous and the L-glutamic acid (L-Glu)-evoked release of endogenous dopamine from superfused slices of rat caudate-putamen. Dopamine 197-205 proenkephalin Rattus norvegicus 99-109 3037389-6 1987 Whereas the effects of beta-endorphin, DAGO and [D-Ala2,D-Leu5]enkephalin could be reduced by the mu-preferential antagonist naloxone, the effects of ethylketocyclazocine and U-50488 were not changed. Naloxone 125-133 proenkephalin Rattus norvegicus 63-73 3819722-7 1987 Depolarization released GABA and Met5-enkephalin-Arg6-Phe7 together with DBI. arg6-phe7 49-58 proenkephalin Rattus norvegicus 38-48 2885761-3 1987 Imipramine (4 days) resulted in a marked inhibition of the ability of [D-Ala2, D-Leu5] enkephalin to decrease electrically evoked contractions of the vas deferens (presynaptic opioid receptor response) but did not significantly affect the carbachol-induced increase in electrically evoked contractions (muscarinic receptor response). Imipramine 0-10 proenkephalin Rattus norvegicus 87-97 2885761-3 1987 Imipramine (4 days) resulted in a marked inhibition of the ability of [D-Ala2, D-Leu5] enkephalin to decrease electrically evoked contractions of the vas deferens (presynaptic opioid receptor response) but did not significantly affect the carbachol-induced increase in electrically evoked contractions (muscarinic receptor response). Carbachol 239-248 proenkephalin Rattus norvegicus 87-97 3037428-1 1987 An alkylating tetrapeptide enkephalin derivative, Tyr-D-Ala-Gly-(Me)Phe-chloromethyl ketone (DAMK) was synthesized, and its binding characteristics on rat brain membranes were evaluated. tyr-d-ala-gly-(me)phe-chloromethyl ketone 50-91 proenkephalin Rattus norvegicus 27-37 3299142-0 1987 [Met5]enkephalin-Arg6-Phe7- and [Met5]enkephalin-Arg6-Gly7-Leu8-immunoreactive nerve fibres and neurons in the superior cervical ganglion of the rat. arg6-gly7-leu8 49-63 proenkephalin Rattus norvegicus 38-48 3580841-0 1987 Haloperidol increases proenkephalin mRNA levels in the caudate-putamen of the rat: a quantitative study at the cellular level using in situ hybridization. Haloperidol 0-11 proenkephalin Rattus norvegicus 22-35 3580841-2 1987 It has also been demonstrated that chronic treatment of rats with the dopamine receptor blocker, haloperidol, results in an increase in the levels of enkephalin peptides and proenkephalin mRNA in this brain region. Haloperidol 97-108 proenkephalin Rattus norvegicus 150-160 3031275-8 1987 When the relative decrease in mu and delta opioid receptor binding was determined by carrying out [3H]-D-Ala2, DLeu5-enkephalin binding in the presence of 1 microM morphiceptin, it was observed that, 3 days after etorphine treatment, there was a decrease in mu opioid receptor binding, with minimal change in delta opioid receptor binding in both brain regions of striatum and midbrain. dleu5 111-116 proenkephalin Rattus norvegicus 117-127 3580841-2 1987 It has also been demonstrated that chronic treatment of rats with the dopamine receptor blocker, haloperidol, results in an increase in the levels of enkephalin peptides and proenkephalin mRNA in this brain region. Haloperidol 97-108 proenkephalin Rattus norvegicus 174-187 3580841-3 1987 To determine whether this increase in proenkephalin mRNA content is exhibited by all enkephalinergic neurons of the caudate-putamen or by only a subpopulation, we have used in situ nucleic acid hybridization to examine the haloperidol-induced increase in proenkephalin mRNA levels at the cellular level. Haloperidol 223-234 proenkephalin Rattus norvegicus 38-51 3580841-4 1987 Results of in situ hybridization suggest that all enkephalinergic neurons in the caudate-putamen can respond to haloperidol treatment with an increase in steady state levels of proenkephalin mRNA, and that the mean induction is an approximate 3-fold increase in the message levels. Haloperidol 112-123 proenkephalin Rattus norvegicus 177-190 3580841-5 1987 This suggests that dopamine exerts a tonic inhibitory effect on the expression of the proenkephalin gene in all of the enkephalinergic neurons of the caudate-putamen. Dopamine 19-27 proenkephalin Rattus norvegicus 86-99 2855368-3 1987 N-EH was found to be 9-fold more potent than naloxone in antagonizing the effects of D-Ala2-Leu5-enkephalin in the Mvd and 22-fold less potent in antagonizing normorphine in the Gpi. n-eh 0-4 proenkephalin Rattus norvegicus 97-107 2855368-3 1987 N-EH was found to be 9-fold more potent than naloxone in antagonizing the effects of D-Ala2-Leu5-enkephalin in the Mvd and 22-fold less potent in antagonizing normorphine in the Gpi. Naloxone 45-53 proenkephalin Rattus norvegicus 97-107 2882398-4 1987 In the presence of either clonidine or [Leu5]enkephalin, which by themselves inhibited the electrically stimulated release of [3H]NA, the effect of PDB was significantly reduced. Tritium 127-129 proenkephalin Rattus norvegicus 45-55 2881450-5 1987 The mode of action of PLG with relation to dopamine-enkephalin interaction is discussed. Dopamine 43-51 proenkephalin Rattus norvegicus 52-62 3035383-1 1987 D-1 dopamine receptor-stimulated cyclic AMP efflux from rat neostriatal slices (induced by 30 microM dopamine + 10 microM (-)sulpiride) was concentration-dependently reduced by morphine, [D-Ala-D-Leu]-enkephalin (DADLE), [D-Pen-D-Pen]enkephalin (DPDPE) and bremazocine. Cyclic AMP 33-43 proenkephalin Rattus norvegicus 201-211 3035383-1 1987 D-1 dopamine receptor-stimulated cyclic AMP efflux from rat neostriatal slices (induced by 30 microM dopamine + 10 microM (-)sulpiride) was concentration-dependently reduced by morphine, [D-Ala-D-Leu]-enkephalin (DADLE), [D-Pen-D-Pen]enkephalin (DPDPE) and bremazocine. Cyclic AMP 33-43 proenkephalin Rattus norvegicus 234-244 3035383-1 1987 D-1 dopamine receptor-stimulated cyclic AMP efflux from rat neostriatal slices (induced by 30 microM dopamine + 10 microM (-)sulpiride) was concentration-dependently reduced by morphine, [D-Ala-D-Leu]-enkephalin (DADLE), [D-Pen-D-Pen]enkephalin (DPDPE) and bremazocine. Dopamine 4-12 proenkephalin Rattus norvegicus 201-211 3035383-1 1987 D-1 dopamine receptor-stimulated cyclic AMP efflux from rat neostriatal slices (induced by 30 microM dopamine + 10 microM (-)sulpiride) was concentration-dependently reduced by morphine, [D-Ala-D-Leu]-enkephalin (DADLE), [D-Pen-D-Pen]enkephalin (DPDPE) and bremazocine. Dopamine 4-12 proenkephalin Rattus norvegicus 234-244 3027318-8 1987 The enkephalin-induced responses were extremely sensitive to antagonism by naloxone and completely blocked by pretreatment with the irreversible mu antagonist beta-funaltrexamine. Naloxone 75-83 proenkephalin Rattus norvegicus 4-14 3027318-8 1987 The enkephalin-induced responses were extremely sensitive to antagonism by naloxone and completely blocked by pretreatment with the irreversible mu antagonist beta-funaltrexamine. beta-funaltrexamine 159-178 proenkephalin Rattus norvegicus 4-14 2885779-5 1987 Most of the immunoreactive [Leu]enkephalin-like material appeared to occur in oxytocin nerves; only in larger vasopressin varicosities was there some dot-like [Leu]enkephalin immunoreaction. Leucine 28-31 proenkephalin Rattus norvegicus 32-42 2885779-6 1987 This indicates that neural lobe [Leu]enkephalin predominantly is cleaved from a precursor which also contains [Met]enkephalin. Leucine 33-36 proenkephalin Rattus norvegicus 37-47 2885779-6 1987 This indicates that neural lobe [Leu]enkephalin predominantly is cleaved from a precursor which also contains [Met]enkephalin. Leucine 33-36 proenkephalin Rattus norvegicus 115-125 3030506-2 1987 It was found that delta-receptor binding, assessed with [3H]D-Ala2-D-Leu5-enkephalin ([3H]DADLE) (+ 10 nM D-Ala2- MePhe4-Gly-ol5-enkephalin (DAMGE)), was stimulated by the 3 cations in a dose- and developmental time-dependent manner. Tritium 57-59 proenkephalin Rattus norvegicus 74-84 3030506-2 1987 It was found that delta-receptor binding, assessed with [3H]D-Ala2-D-Leu5-enkephalin ([3H]DADLE) (+ 10 nM D-Ala2- MePhe4-Gly-ol5-enkephalin (DAMGE)), was stimulated by the 3 cations in a dose- and developmental time-dependent manner. Tritium 87-89 proenkephalin Rattus norvegicus 74-84 3030873-1 1987 The effect of TRH and its analogs, MK771 and RX-77368 on the binding of [3H]D-serine-6-threonine-leucine enkephalin (delta opiate receptors), [3H]ethylketocyclazocine (kappa receptors) and [3H]naltrexone (mu receptors) to the rat brain membranes was determined. Tritium 73-75 proenkephalin Rattus norvegicus 105-115 2887451-1 1987 The medulla oblongata and pons of colchicine treated rats were analyzed with a double-staining technique using mouse monoclonal antibodies to somatostatin and rabbit polyclonal antibodies raised against methionine-enkephalin. Methionine 203-213 proenkephalin Rattus norvegicus 214-224 2820832-13 1987 Similarly the Bmax and Kd values for the binding of [3H]naltrexone, [3H]D-Ser2-Thr6-leucine enkephalin and [3H]ethylketocyclazocine to brain membranes prepared from rats kept on 4, 20 and 50% protein concentration did not differ. Tritium 69-71 proenkephalin Rattus norvegicus 92-102 3031536-2 1987 Contractions were inhibited by alternate submaximal but equieffective doses of the selective mu and delta-opioid ligands [D-Ala2-Me-Phe4,Gly(ol)5] enkephaline (DAGO) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE), respectively, administered by the intracerebroventricular (i.c.v.) [d-ala2-me-phe4 121-136 proenkephalin Rattus norvegicus 147-157 2878974-6 1987 The conversion of enkephalin-containing peptides into enkephalins was virtually completely inhibited by N-[1-(R,S)-carboxy-2-phenylethyl]-Ala-Ala-Phe-p-aminobenzoate, a specific active-site-directed inhibitor of endopeptidase-24.15, indicating that this enzyme was responsible for the observed interconversions. n-[1-(r,s)-carboxy-2-phenylethyl]-ala-ala-phe-p-aminobenzoate 104-165 proenkephalin Rattus norvegicus 18-28 3027302-3 1987 A chronic intrathecal infusion of the relatively selective delta agonist, [D-Ala2, D-Leu5]enkephalin (DADLE), produced a larger degree of tolerance to DADLE than to the highly specific mu-activating morphiceptin analog [N-methyl-Phe3, D-Pro4]morphiceptin (PL017). [n-methyl-phe3, d-pro4]morphiceptin 219-254 proenkephalin Rattus norvegicus 90-100 3031536-2 1987 Contractions were inhibited by alternate submaximal but equieffective doses of the selective mu and delta-opioid ligands [D-Ala2-Me-Phe4,Gly(ol)5] enkephaline (DAGO) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE), respectively, administered by the intracerebroventricular (i.c.v.) [2-d-penicillamine 170-188 proenkephalin Rattus norvegicus 147-157 3673383-1 1987 It has been elucidated that the structures of the motor system of the rabbit and rat brain undergo significant alterations in monoamine metabolism 30 min after the administration of the synthetic enkephalin analogue Tyr-D-Ala-Gly-Phe-NH2 and in acetylcholinesterase activity and protein metabolism on the 3rd-6th day. monoamine 126-135 proenkephalin Rattus norvegicus 196-206 3039692-2 1987 When 72% of the phosphatidylinositol in the rat brain membranes was hydrolyzed by phosphatidylinositol-specific phospholipase C, the affinity of opiate receptor for [D-Ala2,-D-Leu5] enkephalin was almost doubled and maximal binding of [D-Ala2,-D-Leu5] enkephalin was decreased to 87% of control. Phosphatidylinositols 16-36 proenkephalin Rattus norvegicus 182-192 3039692-2 1987 When 72% of the phosphatidylinositol in the rat brain membranes was hydrolyzed by phosphatidylinositol-specific phospholipase C, the affinity of opiate receptor for [D-Ala2,-D-Leu5] enkephalin was almost doubled and maximal binding of [D-Ala2,-D-Leu5] enkephalin was decreased to 87% of control. Phosphatidylinositols 16-36 proenkephalin Rattus norvegicus 252-262 3039692-2 1987 When 72% of the phosphatidylinositol in the rat brain membranes was hydrolyzed by phosphatidylinositol-specific phospholipase C, the affinity of opiate receptor for [D-Ala2,-D-Leu5] enkephalin was almost doubled and maximal binding of [D-Ala2,-D-Leu5] enkephalin was decreased to 87% of control. Phosphatidylinositols 82-102 proenkephalin Rattus norvegicus 182-192 3039692-2 1987 When 72% of the phosphatidylinositol in the rat brain membranes was hydrolyzed by phosphatidylinositol-specific phospholipase C, the affinity of opiate receptor for [D-Ala2,-D-Leu5] enkephalin was almost doubled and maximal binding of [D-Ala2,-D-Leu5] enkephalin was decreased to 87% of control. Phosphatidylinositols 82-102 proenkephalin Rattus norvegicus 252-262 3039692-2 1987 When 72% of the phosphatidylinositol in the rat brain membranes was hydrolyzed by phosphatidylinositol-specific phospholipase C, the affinity of opiate receptor for [D-Ala2,-D-Leu5] enkephalin was almost doubled and maximal binding of [D-Ala2,-D-Leu5] enkephalin was decreased to 87% of control. [d-ala2,-d-leu5] 165-181 proenkephalin Rattus norvegicus 182-192 3039692-3 1987 Although specific [D-Ala2,-D-Leu5] enkephalin binding was decreased with phosphatidylinositol hydrolysis when measured at higher concentration (30 nM) of [D-Ala2,-D-Leu5] enkephalin, the specific binding was increased with the hydrolysis of phosphatidylinositol when measured at lower concentration (6 nM) of the ligand. Phosphatidylinositols 73-93 proenkephalin Rattus norvegicus 35-45 3039692-3 1987 Although specific [D-Ala2,-D-Leu5] enkephalin binding was decreased with phosphatidylinositol hydrolysis when measured at higher concentration (30 nM) of [D-Ala2,-D-Leu5] enkephalin, the specific binding was increased with the hydrolysis of phosphatidylinositol when measured at lower concentration (6 nM) of the ligand. Phosphatidylinositols 73-93 proenkephalin Rattus norvegicus 171-181 3039692-3 1987 Although specific [D-Ala2,-D-Leu5] enkephalin binding was decreased with phosphatidylinositol hydrolysis when measured at higher concentration (30 nM) of [D-Ala2,-D-Leu5] enkephalin, the specific binding was increased with the hydrolysis of phosphatidylinositol when measured at lower concentration (6 nM) of the ligand. Phosphatidylinositols 241-261 proenkephalin Rattus norvegicus 35-45 3039692-4 1987 On treatment of membranes with phosphatidylcholine-hydrolyzing phospholipase C, specific [D-Ala2,-D-Leu5] enkephalin binding was drastically decreased with the progressive hydrolysis of phosphatidylcholine in the rat brain membranes, and specific binding was completely lost after 81% hydrolysis of phosphatidylcholine. Phosphatidylcholines 31-50 proenkephalin Rattus norvegicus 106-116 3039692-4 1987 On treatment of membranes with phosphatidylcholine-hydrolyzing phospholipase C, specific [D-Ala2,-D-Leu5] enkephalin binding was drastically decreased with the progressive hydrolysis of phosphatidylcholine in the rat brain membranes, and specific binding was completely lost after 81% hydrolysis of phosphatidylcholine. Phosphatidylcholines 186-205 proenkephalin Rattus norvegicus 106-116 3039692-4 1987 On treatment of membranes with phosphatidylcholine-hydrolyzing phospholipase C, specific [D-Ala2,-D-Leu5] enkephalin binding was drastically decreased with the progressive hydrolysis of phosphatidylcholine in the rat brain membranes, and specific binding was completely lost after 81% hydrolysis of phosphatidylcholine. Phosphatidylcholines 186-205 proenkephalin Rattus norvegicus 106-116 2826799-1 1987 Torpedo electric organ contains high concentrations of angiotensin converting enzyme (ACE) like activity, cleaving [Leu5]enkephalin at the Gly3-Phe4 peptide bond. glycyl-glycyl-glycine 139-143 proenkephalin Rattus norvegicus 121-131 3039692-7 1987 From these results, it is concluded that the binding of [D-Ala2,-D-Leu5] enkephalin to opiate receptor is influenced by changes in the phospholipid environment of the rat brain membranes, and that phosphatidylinositol may be a modulator for the function of the receptor. Phospholipids 135-147 proenkephalin Rattus norvegicus 73-83 3673383-1 1987 It has been elucidated that the structures of the motor system of the rabbit and rat brain undergo significant alterations in monoamine metabolism 30 min after the administration of the synthetic enkephalin analogue Tyr-D-Ala-Gly-Phe-NH2 and in acetylcholinesterase activity and protein metabolism on the 3rd-6th day. Tyrosine 216-219 proenkephalin Rattus norvegicus 196-206 3039692-7 1987 From these results, it is concluded that the binding of [D-Ala2,-D-Leu5] enkephalin to opiate receptor is influenced by changes in the phospholipid environment of the rat brain membranes, and that phosphatidylinositol may be a modulator for the function of the receptor. Phosphatidylinositols 197-217 proenkephalin Rattus norvegicus 73-83 3673383-1 1987 It has been elucidated that the structures of the motor system of the rabbit and rat brain undergo significant alterations in monoamine metabolism 30 min after the administration of the synthetic enkephalin analogue Tyr-D-Ala-Gly-Phe-NH2 and in acetylcholinesterase activity and protein metabolism on the 3rd-6th day. d-ala-gly-phe-nh2 220-237 proenkephalin Rattus norvegicus 196-206 3025539-3 1986 However, the Bmax for the binding of kappa-ligand (ethylketocyclazocine, EKC) to brain membranes after the suppression of mu and delta-sites by 100 nM each of unlabeled D-Ala2-MePhe4-Gly-ol5-enkephalin and D-Ala2-D-Leu5-enkephalin, respectively, was significantly greater in hypertensive rats compared to normotensive rats. Ethylketocyclazocine 51-71 proenkephalin Rattus norvegicus 191-201 3025539-3 1986 However, the Bmax for the binding of kappa-ligand (ethylketocyclazocine, EKC) to brain membranes after the suppression of mu and delta-sites by 100 nM each of unlabeled D-Ala2-MePhe4-Gly-ol5-enkephalin and D-Ala2-D-Leu5-enkephalin, respectively, was significantly greater in hypertensive rats compared to normotensive rats. Ethylketocyclazocine 51-71 proenkephalin Rattus norvegicus 220-230 2876067-0 1986 Kainic acid alters the metabolism of Met5-enkephalin and the level of dynorphin A in the rat hippocampus. Kainic Acid 0-11 proenkephalin Rattus norvegicus 42-52 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. FAB protocol 28-31 proenkephalin Rattus norvegicus 140-150 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. FAB protocol 28-31 proenkephalin Rattus norvegicus 203-213 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. (me)phe4 117-125 proenkephalin Rattus norvegicus 203-213 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. gly(oh)5 126-134 proenkephalin Rattus norvegicus 203-213 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. Tritium 136-138 proenkephalin Rattus norvegicus 140-150 3023329-2 1986 In a titratable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide [D-Ala2,(Me)Phe4,Gly(OH)5][3H] enkephalin and the delta selective peptide [D-Pen2,D-Pen5] [3H]enkephalin (where Pen represents penicillamine) to neural membranes. Tritium 136-138 proenkephalin Rattus norvegicus 203-213 3023329-5 1986 When mu sites were blocked with [D-Ala2,(Me)Phe4,Gly(OH)5]enkephalin, the Fab fragments suppressed the binding of [D-Pen2,D-Pen5][3H]enkephalin to the same degree as when the mu binding site was not blocked. (me)phe4 40-48 proenkephalin Rattus norvegicus 58-68 3023329-5 1986 When mu sites were blocked with [D-Ala2,(Me)Phe4,Gly(OH)5]enkephalin, the Fab fragments suppressed the binding of [D-Pen2,D-Pen5][3H]enkephalin to the same degree as when the mu binding site was not blocked. (me)phe4 40-48 proenkephalin Rattus norvegicus 133-143 3023329-5 1986 When mu sites were blocked with [D-Ala2,(Me)Phe4,Gly(OH)5]enkephalin, the Fab fragments suppressed the binding of [D-Pen2,D-Pen5][3H]enkephalin to the same degree as when the mu binding site was not blocked. FAB protocol 74-77 proenkephalin Rattus norvegicus 58-68 3023329-5 1986 When mu sites were blocked with [D-Ala2,(Me)Phe4,Gly(OH)5]enkephalin, the Fab fragments suppressed the binding of [D-Pen2,D-Pen5][3H]enkephalin to the same degree as when the mu binding site was not blocked. FAB protocol 74-77 proenkephalin Rattus norvegicus 133-143 3538020-3 1986 Two hours of insulin hypoglycemia, which produced intense reflex stimulation of the splanchnic nerves as evidenced by a 55% decrease in the adrenal medulla catecholamine levels, resulted in a 3-fold increase in proenkephalin A mRNA levels in this tissue. Catecholamines 156-169 proenkephalin Rattus norvegicus 211-226 3538020-7 1986 administration) with the ganglionic and muscarinic blocking agents chlorisondamine (5 mg/kg of body weight) and atropine (1 mg/kg) blocked the increase in levels of proenkephalin A mRNA seen in the rat adrenal medulla following insulin hypoglycemia. Chlorisondamine 67-82 proenkephalin Rattus norvegicus 165-180 3538020-7 1986 administration) with the ganglionic and muscarinic blocking agents chlorisondamine (5 mg/kg of body weight) and atropine (1 mg/kg) blocked the increase in levels of proenkephalin A mRNA seen in the rat adrenal medulla following insulin hypoglycemia. Atropine 112-120 proenkephalin Rattus norvegicus 165-180 3026557-5 1986 Administration of morphine and an enkephalin analogue (Tyr-D-Met-Gly-Phe(4-NO2)-Pro-NH2) at different depths in the ACC indicated that the increase in food intake occurred at a site separate from that of the decrease in water intake. tyr-d-met-gly-phe(4-no2)-pro-nh2 55-87 proenkephalin Rattus norvegicus 34-44 3540720-10 1986 Adrenal enkephalin-like immunoreactivity showed similar but not identical changes following reserpine. Reserpine 92-101 proenkephalin Rattus norvegicus 8-18 3025420-4 1986 Because the paraventricular hypothalamic nucleus (PVN) plays a central role in autonomic and cardiovascular regulation, we administered the mu-selective enkephalin analog, D-Ala2-NMe-Phe4-Gly(ol)5enkephalin (DAGO), directly into PVN in conscious, unstressed rats and determined the changes in plasma catecholamine concentrations, blood pressure and heart rate. d-ala2-nme-phe4-gly(ol)5enkephalin 172-206 proenkephalin Rattus norvegicus 153-163 3792452-1 1986 Treatment of rats for 18 months with trifluoperazine increased [Met5]- and [Leu5]enkephalin and neurotensin content in striatum and nucleus accumbens. Trifluoperazine 37-52 proenkephalin Rattus norvegicus 81-91 3792452-3 1986 Administration of L-DOPA plus carbidopa, bromocriptine or pergolide for 12 months decreased [Met5]enkephalin (except bromocriptine) and neurotensin, but not [Leu5]enkephalin, levels in striatum. Levodopa 18-24 proenkephalin Rattus norvegicus 98-108 3792452-3 1986 Administration of L-DOPA plus carbidopa, bromocriptine or pergolide for 12 months decreased [Met5]enkephalin (except bromocriptine) and neurotensin, but not [Leu5]enkephalin, levels in striatum. Carbidopa 30-39 proenkephalin Rattus norvegicus 98-108 3792452-3 1986 Administration of L-DOPA plus carbidopa, bromocriptine or pergolide for 12 months decreased [Met5]enkephalin (except bromocriptine) and neurotensin, but not [Leu5]enkephalin, levels in striatum. Bromocriptine 41-54 proenkephalin Rattus norvegicus 98-108 3792452-3 1986 Administration of L-DOPA plus carbidopa, bromocriptine or pergolide for 12 months decreased [Met5]enkephalin (except bromocriptine) and neurotensin, but not [Leu5]enkephalin, levels in striatum. Pergolide 58-67 proenkephalin Rattus norvegicus 98-108 3792452-3 1986 Administration of L-DOPA plus carbidopa, bromocriptine or pergolide for 12 months decreased [Met5]enkephalin (except bromocriptine) and neurotensin, but not [Leu5]enkephalin, levels in striatum. Pergolide 58-67 proenkephalin Rattus norvegicus 163-173 3792453-2 1986 injection of [D-Ala2,Leu5]enkephalin produced depressor and bradycardiac responses which were prevented by naloxone or FMRF-NH2 pretreatment. Naloxone 107-115 proenkephalin Rattus norvegicus 26-36 3029618-1 1986 A novel affinity reagent DALECK, i.e. D-Ala2-Leu5-enkephalin with a C-terminal chloromethyl ketone group, was previously synthesized in normal and in tritiated form and shown to react irreversibly at opioid receptors, with some evidence for selectivity for the mu subtype. 1,3-Dichloroacetone 79-98 proenkephalin Rattus norvegicus 50-60 3102992-1 1986 We studied behavioral effects of the intraventricularly and intrathecally administered guanidinoethylmercaptosuccinic acid (GEMSA) - a potent inhibitor of enkephalin convertase. guanidinoethylmercaptosuccinic acid 87-122 proenkephalin Rattus norvegicus 155-165 3093194-1 1986 Treatment of animal and human plasmas with pepsin yielded large quantities of immunoreactive methionine5-enkephalin (i-met-ENK). methionine5-enkephalin 93-115 proenkephalin Rattus norvegicus 123-126 3093194-1 1986 Treatment of animal and human plasmas with pepsin yielded large quantities of immunoreactive methionine5-enkephalin (i-met-ENK). Methionine 93-96 proenkephalin Rattus norvegicus 123-126 3093194-4 1986 Pepsin-generated i-met-ENK from rat plasma gave three major peaks during reverse phase HPLC, one of which (approximately 25% of the total) coeluted with methionine5-enkephalin sulfoxide and also completed in a radioreceptor assay for opiate-related substances. Iodine 4-5 proenkephalin Rattus norvegicus 23-26 3093194-4 1986 Pepsin-generated i-met-ENK from rat plasma gave three major peaks during reverse phase HPLC, one of which (approximately 25% of the total) coeluted with methionine5-enkephalin sulfoxide and also completed in a radioreceptor assay for opiate-related substances. Methionine 19-22 proenkephalin Rattus norvegicus 23-26 3093194-4 1986 Pepsin-generated i-met-ENK from rat plasma gave three major peaks during reverse phase HPLC, one of which (approximately 25% of the total) coeluted with methionine5-enkephalin sulfoxide and also completed in a radioreceptor assay for opiate-related substances. methionine5-enkephalin sulfoxide 153-185 proenkephalin Rattus norvegicus 23-26 3093194-4 1986 Pepsin-generated i-met-ENK from rat plasma gave three major peaks during reverse phase HPLC, one of which (approximately 25% of the total) coeluted with methionine5-enkephalin sulfoxide and also completed in a radioreceptor assay for opiate-related substances. Opiate Alkaloids 234-240 proenkephalin Rattus norvegicus 23-26 3093194-5 1986 In addition, this material produced met-ENK-like effects on vascular permeability in rat skin and inhibited electrically induced contractions of the isolated guinea pig ileum in a naloxone-sensitive manner. Naloxone 180-188 proenkephalin Rattus norvegicus 40-43 3022077-1 1986 Prolonged (7 days) methionine-enkephalin (DALA) treatment provoked a dose-dependent increase in the volume of zona fasciculata cells of dexamethasone-administered rats, along with a notable rise in the plasma concentration of corticosterone and the activity of 11 beta-hydroxylase. Dexamethasone 136-149 proenkephalin Rattus norvegicus 30-40 3022077-1 1986 Prolonged (7 days) methionine-enkephalin (DALA) treatment provoked a dose-dependent increase in the volume of zona fasciculata cells of dexamethasone-administered rats, along with a notable rise in the plasma concentration of corticosterone and the activity of 11 beta-hydroxylase. Corticosterone 226-240 proenkephalin Rattus norvegicus 30-40 3785586-8 1986 Octapeptide levels (Methionine-enkephalin-Arg-Gly-Leu) significantly increase in striatum (22%) and decrease in hypophysis (97%) and in brain stem (76%). octapeptide 0-11 proenkephalin Rattus norvegicus 31-41 3021281-8 1986 In the latter case, CT also reduced the inhibitory effect of gamma-aminobutyric acid on PS and enhanced the excitatory action of the opioid peptide D-Ala2-D-Leu5-enkephalin. Corticosterone 20-22 proenkephalin Rattus norvegicus 162-172 3027723-2 1986 [3H]-dihydromorphine ([3H]-DHM)3 [3H]-D-Ala2-D-Leu5-enkephalin ([3H]-DADLE) and [3H]-dynorphin A (1-8) ([3H]-DYN) as markers of mu (mu), delta (delta) and Kappa (kappa) sites were utilized respectively. 3h]-dihydromorphine 1-20 proenkephalin Rattus norvegicus 52-62 3027723-2 1986 [3H]-dihydromorphine ([3H]-DHM)3 [3H]-D-Ala2-D-Leu5-enkephalin ([3H]-DADLE) and [3H]-dynorphin A (1-8) ([3H]-DYN) as markers of mu (mu), delta (delta) and Kappa (kappa) sites were utilized respectively. [3h]-dhm 22-30 proenkephalin Rattus norvegicus 52-62 3027723-2 1986 [3H]-dihydromorphine ([3H]-DHM)3 [3H]-D-Ala2-D-Leu5-enkephalin ([3H]-DADLE) and [3H]-dynorphin A (1-8) ([3H]-DYN) as markers of mu (mu), delta (delta) and Kappa (kappa) sites were utilized respectively. Tritium 1-3 proenkephalin Rattus norvegicus 52-62 3027723-2 1986 [3H]-dihydromorphine ([3H]-DHM)3 [3H]-D-Ala2-D-Leu5-enkephalin ([3H]-DADLE) and [3H]-dynorphin A (1-8) ([3H]-DYN) as markers of mu (mu), delta (delta) and Kappa (kappa) sites were utilized respectively. Tritium 1-5 proenkephalin Rattus norvegicus 52-62 3027723-2 1986 [3H]-dihydromorphine ([3H]-DHM)3 [3H]-D-Ala2-D-Leu5-enkephalin ([3H]-DADLE) and [3H]-dynorphin A (1-8) ([3H]-DYN) as markers of mu (mu), delta (delta) and Kappa (kappa) sites were utilized respectively. Tritium 23-25 proenkephalin Rattus norvegicus 52-62 3026542-1 1986 The activity of adenylate cyclase in striatal membrane-enriched fractions (25,000 g) was inhibited by morphine, beta-endorphin, [D-Ala2-D-Leu5] enkephalin (DADLenk), fentanyl and bremazocine. Morphine 102-110 proenkephalin Rattus norvegicus 144-154 3024998-1 1986 The ontogenesis of delta-opioid receptors has been studied in the postnatal period up to day 50 using the highly selective delta-site ligand [3H][D-Pen2,D-Pen5]enkephalin ([3H]DPDPE) in binding studies. Tritium 142-144 proenkephalin Rattus norvegicus 160-170 3025828-3 1986 This augmentation was blocked by the opiate receptor antagonist (-)naloxone (10(-6) mol/l) suggesting specificity of the action of Met-Enk and Met-Enk Arg6Phe7. Naloxone 67-75 proenkephalin Rattus norvegicus 135-138 3756321-1 1986 The experiments on white rats have shown that Dala2-Leu5-arg-enkephalin preinjection reduced the degree of serum creatine phosphokinase increment and decreased labeled pyrophosphate accumulation in the myocardium during the onset of anxiety neurosis, according to O. Desiderato. diphosphoric acid 168-181 proenkephalin Rattus norvegicus 61-71 3540390-0 1986 The enhancing effects of amastatin, phosphoramidon and captopril on the potency of [Met5]-enkephalin in rat vas deferens. amastatin 25-34 proenkephalin Rattus norvegicus 90-100 3540390-0 1986 The enhancing effects of amastatin, phosphoramidon and captopril on the potency of [Met5]-enkephalin in rat vas deferens. Captopril 55-64 proenkephalin Rattus norvegicus 90-100 3540390-3 1986 Additionally, the enkephalin-hydrolyzing aminopeptidase, endopeptidase-24.11 and peptidyl dipeptidase A in rat vas deferens were found to be inhibited maximally with 1 microM of amastatin, 1 microM of phosphoramidon and 1 microM of captopril, respectively. amastatin 178-187 proenkephalin Rattus norvegicus 18-28 3540390-3 1986 Additionally, the enkephalin-hydrolyzing aminopeptidase, endopeptidase-24.11 and peptidyl dipeptidase A in rat vas deferens were found to be inhibited maximally with 1 microM of amastatin, 1 microM of phosphoramidon and 1 microM of captopril, respectively. phosphoramidon 201-215 proenkephalin Rattus norvegicus 18-28 3540390-3 1986 Additionally, the enkephalin-hydrolyzing aminopeptidase, endopeptidase-24.11 and peptidyl dipeptidase A in rat vas deferens were found to be inhibited maximally with 1 microM of amastatin, 1 microM of phosphoramidon and 1 microM of captopril, respectively. Captopril 232-241 proenkephalin Rattus norvegicus 18-28 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. d-ala2-mephe4 184-197 proenkephalin Rattus norvegicus 19-29 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. d-ala2-mephe4 184-197 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. d-ala2-mephe4 184-197 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. d-ala2-mephe4 184-197 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. d-ala2-mephe4 184-197 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. Morphine 261-269 proenkephalin Rattus norvegicus 19-29 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. Morphine 261-269 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. Morphine 261-269 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. Morphine 261-269 proenkephalin Rattus norvegicus 123-133 2874836-2 1986 Binding of [3H]Met-enkephalin was saturable, specific and reversible; the rank order for inhibition competition of [3H]Met-enkephalin binding by various compounds was Met-enkephalin = D-Ala2-MePhe4, Met(0)ol enkephalin) greater than Leu-enkephalin greater than morphine with half-maximal inhibitory constants (IC50) of approx. Morphine 261-269 proenkephalin Rattus norvegicus 123-133 2874836-6 1986 However, the various enkephalins exerted this effect at different concentrations; only the EC50 values (half-maximal effective concentrations) of their insulinotropic effect were in the same range as the IC50 values of inhibition of [3H]met-enkephalin binding. Tritium 234-236 proenkephalin Rattus norvegicus 21-31 3018230-6 1986 On a molar basis, the order of relative potency of the peptides as morphine-like discriminative stimuli was: D-Ala2-NMePhe4-Gly5(ol)enkephalin = FK 33,824 greater than beta-endorphin greater than D-Ala2-D-Leu5enkephalin = metkephamid greater than morphiceptin. Morphine 67-75 proenkephalin Rattus norvegicus 132-142 3018230-7 1986 The discriminative effects of D-Ala2-NMePhe4-Gly5(ol)enkephalin, D-Ala2-D-Leu5enkephalin and beta-endorphin were antagonized by low doses of s.c. naltrexone (0.01-1.0 mg/kg). Naltrexone 146-156 proenkephalin Rattus norvegicus 53-63 3025828-3 1986 This augmentation was blocked by the opiate receptor antagonist (-)naloxone (10(-6) mol/l) suggesting specificity of the action of Met-Enk and Met-Enk Arg6Phe7. arg6phe7 151-159 proenkephalin Rattus norvegicus 147-150 3025828-7 1986 We conclude that Met-Enk and Met-Enk Arg6Phe7 have no effect on basal, but augment stimulated H+-production by a direct effect on the parietal cells. arg6phe7 37-45 proenkephalin Rattus norvegicus 33-36 3025828-3 1986 This augmentation was blocked by the opiate receptor antagonist (-)naloxone (10(-6) mol/l) suggesting specificity of the action of Met-Enk and Met-Enk Arg6Phe7. Naloxone 67-75 proenkephalin Rattus norvegicus 147-150 3021160-1 1986 DAGO-enkephalin ([ D-Ala2, MePhe4, Gly-ol5]enkephalin), a highly selective ligand for mu opiate receptors, was dimerized with a series of alpha,omega-alkanedioic acids (n = 2-12) at the OH-terminus. mephe4 27-33 proenkephalin Rattus norvegicus 5-15 3021160-1 1986 DAGO-enkephalin ([ D-Ala2, MePhe4, Gly-ol5]enkephalin), a highly selective ligand for mu opiate receptors, was dimerized with a series of alpha,omega-alkanedioic acids (n = 2-12) at the OH-terminus. alpha,omega-alkanedioic acids 138-167 proenkephalin Rattus norvegicus 5-15 3021160-1 1986 DAGO-enkephalin ([ D-Ala2, MePhe4, Gly-ol5]enkephalin), a highly selective ligand for mu opiate receptors, was dimerized with a series of alpha,omega-alkanedioic acids (n = 2-12) at the OH-terminus. alpha,omega-alkanedioic acids 138-167 proenkephalin Rattus norvegicus 43-53 3741911-1 1986 Injection of the enkephalin analog D-Ala2-Met5-enkephalinamide (DALA) into the ventral tegmental area (VTA) of rats has been shown to activate dopamine (DA) neurons projecting to the nucleus accumbens, thereby increasing spontaneous motor activity. Dopamine 143-151 proenkephalin Rattus norvegicus 17-27 3741911-1 1986 Injection of the enkephalin analog D-Ala2-Met5-enkephalinamide (DALA) into the ventral tegmental area (VTA) of rats has been shown to activate dopamine (DA) neurons projecting to the nucleus accumbens, thereby increasing spontaneous motor activity. Dopamine 64-66 proenkephalin Rattus norvegicus 17-27 3021290-1 1986 Administration of methionine enkephalin (ICV) to rats for 5 days resulted in the development of physical dependence as exemplified by a hypothermic response which peaked 2-8 hours after initiation of withdrawal. icv 41-44 proenkephalin Rattus norvegicus 29-39 3016247-2 1986 Slide-mounted sections of rat brain were labeled with [3H]-[2-D-penicillamine, 5-D-penicillamine]enkephalin([3H]DPDPE), a highly selective delta opioid agonist. Tritium 55-57 proenkephalin Rattus norvegicus 97-107 3017134-7 1986 These data demonstrate that endogenous enkephalin in the VTA can increase the activity of A10 dopamine neurons, supporting a physiological role for enkephalin in mesolimbic and mesocortical dopamine-mediated behaviors. Dopamine 94-102 proenkephalin Rattus norvegicus 39-49 3017134-7 1986 These data demonstrate that endogenous enkephalin in the VTA can increase the activity of A10 dopamine neurons, supporting a physiological role for enkephalin in mesolimbic and mesocortical dopamine-mediated behaviors. Dopamine 94-102 proenkephalin Rattus norvegicus 148-158 3017134-7 1986 These data demonstrate that endogenous enkephalin in the VTA can increase the activity of A10 dopamine neurons, supporting a physiological role for enkephalin in mesolimbic and mesocortical dopamine-mediated behaviors. Dopamine 190-198 proenkephalin Rattus norvegicus 39-49 3017134-7 1986 These data demonstrate that endogenous enkephalin in the VTA can increase the activity of A10 dopamine neurons, supporting a physiological role for enkephalin in mesolimbic and mesocortical dopamine-mediated behaviors. Dopamine 190-198 proenkephalin Rattus norvegicus 148-158 3017134-0 1986 Endogenous enkephalin modulation of dopamine neurons in ventral tegmental area. Dopamine 36-44 proenkephalin Rattus norvegicus 11-21 3017134-1 1986 Many lines of evidence support the possibility that the opioid pentapeptides Met- and Leu-enkephalin can modulate dopamine neurons in the ventral tegmental area (VTA). Leucine 86-89 proenkephalin Rattus norvegicus 90-100 3017134-1 1986 Many lines of evidence support the possibility that the opioid pentapeptides Met- and Leu-enkephalin can modulate dopamine neurons in the ventral tegmental area (VTA). Dopamine 114-122 proenkephalin Rattus norvegicus 90-100 3017134-2 1986 Thus microinjection of enkephalin analogues into the VTA of rats produces a dopamine-dependent increase in spontaneous motor activity and an increase in dopamine metabolism in certain mesolimbic dopamine terminal fields, such as the nucleus accumbens. Dopamine 76-84 proenkephalin Rattus norvegicus 23-33 3017134-2 1986 Thus microinjection of enkephalin analogues into the VTA of rats produces a dopamine-dependent increase in spontaneous motor activity and an increase in dopamine metabolism in certain mesolimbic dopamine terminal fields, such as the nucleus accumbens. Dopamine 153-161 proenkephalin Rattus norvegicus 23-33 3017134-2 1986 Thus microinjection of enkephalin analogues into the VTA of rats produces a dopamine-dependent increase in spontaneous motor activity and an increase in dopamine metabolism in certain mesolimbic dopamine terminal fields, such as the nucleus accumbens. Dopamine 153-161 proenkephalin Rattus norvegicus 23-33 3016247-4 1986 DPDPE and met-enkephalin inhibited [3H]DPDPE binding with high affinity (lC50 values of 6.3 and 13.8 nM, respectively). Tritium 36-38 proenkephalin Rattus norvegicus 14-24 3018189-2 1986 cAMP efflux from neostriatal slices induced by simultaneous activation of (stimulatory) D-1 and (inhibitory) D-2 dopamine receptors with 30 microM dopamine was inhibited by the preferential delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADLE) and the mu-opioid receptor agonist morphine with an EC50 of 100 and 800 nM, respectively. Cyclic AMP 0-4 proenkephalin Rattus norvegicus 236-246 3020473-0 1986 Irreversible labelling of rat brain opioid receptors by enkephalin chloromethyl ketones. chloromethyl ketones 67-87 proenkephalin Rattus norvegicus 56-66 3020473-1 1986 Chloromethyl ketone derivatives of leucine enkephalin (LE), D-Ala2-Leu5-enkephalin (DALE) and D-Ala2-D-Leu5-enkephalin (DADLE) were synthesized. 1,3-Dichloroacetone 0-19 proenkephalin Rattus norvegicus 43-53 3020473-1 1986 Chloromethyl ketone derivatives of leucine enkephalin (LE), D-Ala2-Leu5-enkephalin (DALE) and D-Ala2-D-Leu5-enkephalin (DADLE) were synthesized. 1,3-Dichloroacetone 0-19 proenkephalin Rattus norvegicus 72-82 3020473-3 1986 Preincubation of the membrane fraction with enkephalin chloromethyl ketones causes a significant inhibition of /3H/-naloxone binding which cannot be reversed by extensive washing. chloromethyl ketones 55-75 proenkephalin Rattus norvegicus 44-54 3020473-3 1986 Preincubation of the membrane fraction with enkephalin chloromethyl ketones causes a significant inhibition of /3H/-naloxone binding which cannot be reversed by extensive washing. Tritium 112-114 proenkephalin Rattus norvegicus 44-54 3020473-3 1986 Preincubation of the membrane fraction with enkephalin chloromethyl ketones causes a significant inhibition of /3H/-naloxone binding which cannot be reversed by extensive washing. Naloxone 116-124 proenkephalin Rattus norvegicus 44-54 3016502-0 1986 Proenkephalin-A gene regulation in the rat striatum: influence of lithium and haloperidol. Lithium 66-73 proenkephalin Rattus norvegicus 0-15 3016502-0 1986 Proenkephalin-A gene regulation in the rat striatum: influence of lithium and haloperidol. Haloperidol 78-89 proenkephalin Rattus norvegicus 0-15 3016502-1 1986 This report explores the influence of lithium and haloperidol on (Met5)-enkephalin (ME) biosynthesis in the rat striatum. Lithium 38-45 proenkephalin Rattus norvegicus 72-82 3016502-1 1986 This report explores the influence of lithium and haloperidol on (Met5)-enkephalin (ME) biosynthesis in the rat striatum. Haloperidol 50-61 proenkephalin Rattus norvegicus 72-82 3020473-6 1986 Affinity of enkephalin chloromethyl ketones toward the mu sites is greater than that of the parent compounds. chloromethyl ketones 23-43 proenkephalin Rattus norvegicus 12-22 3018189-2 1986 cAMP efflux from neostriatal slices induced by simultaneous activation of (stimulatory) D-1 and (inhibitory) D-2 dopamine receptors with 30 microM dopamine was inhibited by the preferential delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADLE) and the mu-opioid receptor agonist morphine with an EC50 of 100 and 800 nM, respectively. Dopamine 113-121 proenkephalin Rattus norvegicus 236-246 3018189-2 1986 cAMP efflux from neostriatal slices induced by simultaneous activation of (stimulatory) D-1 and (inhibitory) D-2 dopamine receptors with 30 microM dopamine was inhibited by the preferential delta-opioid receptor agonist [D-Ala2-D-Leu5] enkephalin (DADLE) and the mu-opioid receptor agonist morphine with an EC50 of 100 and 800 nM, respectively. Morphine 290-298 proenkephalin Rattus norvegicus 236-246 3018189-7 1986 The highly selective delta-opioid receptor agonist [D-Pen2-D-Pen5] enkephalin (DPDPE) inhibited dopamine-stimulated cAMP efflux only when D-2 receptors were blocked. Dopamine 96-104 proenkephalin Rattus norvegicus 67-77 3022159-1 1986 3H-noradrenaline release from rat neocortical slices induced by 15 mM K+ was concentration-dependently inhibited by morphine, [D-Ala2-D-Leu5] enkephalin (DADLE) and the calcium entry blocker Cd2+. 3h-noradrenaline 0-16 proenkephalin Rattus norvegicus 142-152 3018189-7 1986 The highly selective delta-opioid receptor agonist [D-Pen2-D-Pen5] enkephalin (DPDPE) inhibited dopamine-stimulated cAMP efflux only when D-2 receptors were blocked. Cyclic AMP 116-120 proenkephalin Rattus norvegicus 67-77 2427157-0 1986 An immunohistochemical study of methionine-enkephalin-Arg6-Gly7-Leu8-like immunoreactivity-containing liquor-contacting neurons (LCNs) in the rat spinal cord. Methionine 32-42 proenkephalin Rattus norvegicus 43-53 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. gly7-leu8 47-56 proenkephalin Rattus norvegicus 31-41 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. gly7-leu8 47-56 proenkephalin Rattus norvegicus 62-65 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Arginine 42-45 proenkephalin Rattus norvegicus 31-41 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Arginine 42-45 proenkephalin Rattus norvegicus 62-65 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Glycine 47-50 proenkephalin Rattus norvegicus 31-41 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Glycine 47-50 proenkephalin Rattus norvegicus 62-65 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Leucine 52-55 proenkephalin Rattus norvegicus 31-41 2427157-1 1986 The localization of methionine-enkephalin-Arg6-Gly7-Leu8 (Met-Enk-Arg-Gly-Leu)-like immunoreactivity in the medullospinal liquor-contacting neurons (LCNs) of the rat was immunohistochemically investigated using a modified Sternberger"s PAP method. Leucine 52-55 proenkephalin Rattus norvegicus 62-65 2427157-2 1986 In this study, we also examined the distribution of Met-Enk-Arg-Gly-Leu-like immunoreactive LCNs in the entire length of the medulla oblongata and spinal cord. Arginine 60-63 proenkephalin Rattus norvegicus 56-59 2427157-2 1986 In this study, we also examined the distribution of Met-Enk-Arg-Gly-Leu-like immunoreactive LCNs in the entire length of the medulla oblongata and spinal cord. Glycine 64-67 proenkephalin Rattus norvegicus 56-59 2427157-2 1986 In this study, we also examined the distribution of Met-Enk-Arg-Gly-Leu-like immunoreactive LCNs in the entire length of the medulla oblongata and spinal cord. Leucine 68-71 proenkephalin Rattus norvegicus 56-59 2427157-7 1986 When the immunoreactivity of perikarya of LCNs was weak, a few nerve terminals with a strong Met-Enk-Arg-Gly-Leu-like immunoreactivity were noticed on them. Arginine 101-104 proenkephalin Rattus norvegicus 97-100 2427157-7 1986 When the immunoreactivity of perikarya of LCNs was weak, a few nerve terminals with a strong Met-Enk-Arg-Gly-Leu-like immunoreactivity were noticed on them. Glycine 105-108 proenkephalin Rattus norvegicus 97-100 2427157-7 1986 When the immunoreactivity of perikarya of LCNs was weak, a few nerve terminals with a strong Met-Enk-Arg-Gly-Leu-like immunoreactivity were noticed on them. Leucine 109-112 proenkephalin Rattus norvegicus 97-100 2427157-8 1986 These findings suggest that preproenkephalin A-related opioid peptides including Met-Enk-Arg-Gly-Leu may be secreted into the cerebrospinal fluid (CSF) through the terminal portions of axon-like processes and/or CSF-contacting processes of LCNs. Arginine 89-92 proenkephalin Rattus norvegicus 85-88 2427157-8 1986 These findings suggest that preproenkephalin A-related opioid peptides including Met-Enk-Arg-Gly-Leu may be secreted into the cerebrospinal fluid (CSF) through the terminal portions of axon-like processes and/or CSF-contacting processes of LCNs. Glycine 93-96 proenkephalin Rattus norvegicus 85-88 2427157-8 1986 These findings suggest that preproenkephalin A-related opioid peptides including Met-Enk-Arg-Gly-Leu may be secreted into the cerebrospinal fluid (CSF) through the terminal portions of axon-like processes and/or CSF-contacting processes of LCNs. Leucine 97-100 proenkephalin Rattus norvegicus 85-88 2427157-8 1986 These findings suggest that preproenkephalin A-related opioid peptides including Met-Enk-Arg-Gly-Leu may be secreted into the cerebrospinal fluid (CSF) through the terminal portions of axon-like processes and/or CSF-contacting processes of LCNs. lcns 240-244 proenkephalin Rattus norvegicus 85-88 3022321-5 1986 The molecular sizes of opioid receptor complexes were estimated as 313,000 +/- 13,500 in the presence of [D-Ala2, D-Leu5] enkephalin, NaCl and Gpp (NH)p; as 165,000 +/- 8,500 in the presence of NaCl only, or of both NaCl and Gpp (NH)p; as 217,000 +/- 6,600 in the presence of Gpp (NH)p only; and as 286,000 +/- 60,900 in the presence of MgCl2 only. Arsenic 64-66 proenkephalin Rattus norvegicus 122-132 3720668-4 1986 The major proenkephalin mRNA species expressed in the rat testis migrates as a 1900-nucleotide RNA on denaturing agarose gels. Sepharose 113-120 proenkephalin Rattus norvegicus 10-23 2427971-1 1986 The neuropeptides substance P, neurotensin and [Met]enkephalin are found in the ventral tegmental area, site of the A10 dopamine cell bodies. Dopamine 120-128 proenkephalin Rattus norvegicus 52-62 3532054-3 1986 Ablation of these neurons in the striato-pallidal pathway by intrastriatal kainate, induced a significant decrease in YGG levels in caudateputamen and globus pallidus (-49%), consistent with the hypothesis that YGG originates from enkephalin neurons. Kainic Acid 75-82 proenkephalin Rattus norvegicus 231-241 3017727-5 1986 Furthermore, in vitro receptor binding was measured to investigate whether or not ethanol, within a non-lethal concentration range, would change the binding parameters of the delta receptor ligand [3H][D-ala2, D-Leu5]enkephalin. Tritium 198-200 proenkephalin Rattus norvegicus 217-227 3017727-5 1986 Furthermore, in vitro receptor binding was measured to investigate whether or not ethanol, within a non-lethal concentration range, would change the binding parameters of the delta receptor ligand [3H][D-ala2, D-Leu5]enkephalin. d-leu5 210-216 proenkephalin Rattus norvegicus 217-227 3717373-4 1986 Water deprivation for 48 h increased the plasma vasopressin concentration (PADH) and 24-h urinary vasopressin excretion (UADHV) in SHR and WKY rats, but PMet-Enk was not altered. Water 0-5 proenkephalin Rattus norvegicus 158-161 3020468-2 1986 Preincubation of rat cerebrum membranes with podophyllotoxin or colchicine provoked a marked increase in the number of binding sites as judged by [3H]-naloxone, [3H]-morphine and [3H]-D-Ala2-Leu5-enkephalin binding experiments. Podophyllotoxin 45-60 proenkephalin Rattus norvegicus 196-206 3020468-2 1986 Preincubation of rat cerebrum membranes with podophyllotoxin or colchicine provoked a marked increase in the number of binding sites as judged by [3H]-naloxone, [3H]-morphine and [3H]-D-Ala2-Leu5-enkephalin binding experiments. Colchicine 64-74 proenkephalin Rattus norvegicus 196-206 3008952-2 1986 The mu-selective enkephalin analogue DAGO was used to indicate that the effect of potassium chloride is not uniform on all subtypes of opioid receptors. Potassium Chloride 82-100 proenkephalin Rattus norvegicus 17-27 3720843-1 1986 The release of [Leu5]enkephalin immunoreactivity ([Leu5]enk-IR) from the isolated perfused rat stomach was demonstrated under basal conditions in the presence of peptidase inhibitors (0.1 microM thiorphan, 1 microM captopril and 2 microM bestatin). Thiorphan 195-204 proenkephalin Rattus norvegicus 21-31 3720843-1 1986 The release of [Leu5]enkephalin immunoreactivity ([Leu5]enk-IR) from the isolated perfused rat stomach was demonstrated under basal conditions in the presence of peptidase inhibitors (0.1 microM thiorphan, 1 microM captopril and 2 microM bestatin). Captopril 215-224 proenkephalin Rattus norvegicus 21-31 3720843-1 1986 The release of [Leu5]enkephalin immunoreactivity ([Leu5]enk-IR) from the isolated perfused rat stomach was demonstrated under basal conditions in the presence of peptidase inhibitors (0.1 microM thiorphan, 1 microM captopril and 2 microM bestatin). ubenimex 238-246 proenkephalin Rattus norvegicus 21-31 3013077-3 1986 In the present experiments, opiate receptor binding was measured in spinal cord after traumatic injury in rats using the selective radioligands [3H] [D-Ala2, D-Leu5]enkephalin (delta-receptor agonist); [3H] [D-Ala2,MePhe4,Gly-(ol)5]enkephalin (mu-receptor agonist); and [3H]ethylketocyclazocine (kappa-receptor agonist). Tritium 145-147 proenkephalin Rattus norvegicus 165-175 3012396-4 1986 Indeed, this was achieved with intracerebroventricular or intrathecal administration of naloxone (2 micrograms), which also selectively antagonized the mu-receptor ligand [D-Ala2, MePhe4, Gly(ol)5]enkephalin (DAGO). Naloxone 88-96 proenkephalin Rattus norvegicus 197-207 3726173-8 1986 Various amounts of met-enkephalin were also likely stored in cells other than sympathetic nerves, including chromaffin-like cells, the incidence of which varied according to species. chromaffin 108-118 proenkephalin Rattus norvegicus 23-33 2871141-8 1986 In addition, a moderate elevation in ir-methionine-enkephalin (ME) was seen in lumbosacral spinal cord. Iridium 37-39 proenkephalin Rattus norvegicus 51-61 2871141-8 1986 In addition, a moderate elevation in ir-methionine-enkephalin (ME) was seen in lumbosacral spinal cord. methionylglutamic acid 63-65 proenkephalin Rattus norvegicus 51-61 2423180-1 1986 The ultrastructural localizations of rat corticoliberin (rCRF) and methionine-enkephalin octapeptide (Met-Enk-8) in the external layer of the rat median eminence were examined by double-immunogold labeling with anti-rCRF and anti-Met-Enk-8 sera labeled with small-sized (Gs) and medium-sized (Gm) gold particles, respectively. Methionine 67-77 proenkephalin Rattus norvegicus 78-88 3754280-1 1986 The influence of chronic activation of gamma-aminobutyric acid (GABA) system on Met5-enkephalin (ME) biosynthesis was investigated in male rats. gamma-Aminobutyric Acid 39-62 proenkephalin Rattus norvegicus 85-95 3754280-1 1986 The influence of chronic activation of gamma-aminobutyric acid (GABA) system on Met5-enkephalin (ME) biosynthesis was investigated in male rats. gamma-Aminobutyric Acid 64-68 proenkephalin Rattus norvegicus 85-95 3006825-1 1986 Rats with increased alcohol motivation have been found to have a rise in enkephalin levels in limbic cortex and a decrease in met-enkephalin levels in the brain basal ganglia. Alcohols 20-27 proenkephalin Rattus norvegicus 73-83 3715065-1 1986 A pharmacokinetic study with [3H]des-enkephalin-gamma-endorphin (3H-DE gamma E) was performed in rats after the intravenous, subcutaneous and intramuscular route of administration. Tritium 29-32 proenkephalin Rattus norvegicus 37-47 3516014-4 1986 A comparison of two consecutive sections, each of which was processed for the immunostaining with anti-NPY and anti-Met-Enk-Arg-Gly-Leu antisera, respectively, indicated that NPY and preproenkephalin A and its derivatives coexist in approximately one-fifth of the total NPY-immunoreactive cells. Arginine 124-127 proenkephalin Rattus norvegicus 120-123 3006825-1 1986 Rats with increased alcohol motivation have been found to have a rise in enkephalin levels in limbic cortex and a decrease in met-enkephalin levels in the brain basal ganglia. Alcohols 20-27 proenkephalin Rattus norvegicus 130-140 3006825-2 1986 Reduction of met-enkephalin to leu-enkephalin ratio in basal ganglia, limbic cortex and hypothalamus may serve as an index of increased inclination to ethanol in these animals. Ethanol 151-158 proenkephalin Rattus norvegicus 17-27 3006825-2 1986 Reduction of met-enkephalin to leu-enkephalin ratio in basal ganglia, limbic cortex and hypothalamus may serve as an index of increased inclination to ethanol in these animals. Ethanol 151-158 proenkephalin Rattus norvegicus 35-45 3955217-0 1986 [Enkephalin content in sections of the brain of rats undergoing intrauterine exposures to ethanol]. Ethanol 90-97 proenkephalin Rattus norvegicus 1-11 3006825-3 1986 Alcohol dependence is characterized by reduced cAMP content in the majority of brain structures studied, sharply decreased met-enkephalin levels in limbic cortex and hypothalamus, and diminished cAMP and cGMP content in hypothalamus. Alcohols 0-7 proenkephalin Rattus norvegicus 127-137 3955217-1 1986 Leu- and met-enkephalin concentration in the brain structures of rat offsprings prenatally exposed to ethanol (4-5 g/kg) was investigated by radioimmunoassay. Ethanol 102-109 proenkephalin Rattus norvegicus 13-23 3955217-3 1986 In experimental animals that had been exposed to ethanol leu- and met-enkephalin concentration in the hemispheric cortex and hippocump was similar to that in the controls, while in the pituitary body it was significantly decreased. Ethanol 49-56 proenkephalin Rattus norvegicus 70-80 3006089-5 1986 Several mu opioid agonists, antagonists, and synthetic enkephalin analogs interacted with DMT and LSD. N,N-Dimethyltryptamine 90-93 proenkephalin Rattus norvegicus 55-65 2869404-1 1986 In addition to "enkephalinase" (EC 3.4.24.11), two enkephalin-hydrolyzing aminopeptidases recently identified in cerebral membranes--aminopeptidase M (EC 3.4.11.2) and a "puromycin-sensitive" aminopeptidase (also designated "MII" or "aminoenkephalinase")--are potentially involved in endogenous enkephalin inactivation. Puromycin 171-180 proenkephalin Rattus norvegicus 51-61 2869404-2 1986 Their participation in the hydrolysis of the endogenous (Met5)enkephalin released by depolarization of slices from rat globus pallidus was assessed, using three inhibitory agents: bestatin, puromycin, and anti-aminopeptidase M antibodies. ubenimex 180-188 proenkephalin Rattus norvegicus 62-72 2869404-2 1986 Their participation in the hydrolysis of the endogenous (Met5)enkephalin released by depolarization of slices from rat globus pallidus was assessed, using three inhibitory agents: bestatin, puromycin, and anti-aminopeptidase M antibodies. Puromycin 190-199 proenkephalin Rattus norvegicus 62-72 2869404-3 1986 The selectivity and potency of these agents were first determined by evaluating their IC50 values for inhibition of [3H](Met5)enkephalin hydrolysis by increasingly complex preparations comprising semipurified aminopeptidases, pallidal membranes, and pallidal slices. Tritium 117-119 proenkephalin Rattus norvegicus 126-136 2869404-7 1986 Analysis of the concentration-protection curves of the three agents for recovery of the (Met5)enkephalin released from pallidal slices in the presence of the "enkephalinase" inhibitor, thiorphan, indicated that both aminopeptidases participated in enkephalin degradation but that the role of aminopeptidase M was largely predominant, in contrast with its low relative activity in the preparation. Thiorphan 185-194 proenkephalin Rattus norvegicus 94-104 3520541-3 1986 Some mechanisms of the enkephalin effect on the hormonal regulation of carbohydrate metabolism are discussed. Carbohydrates 71-83 proenkephalin Rattus norvegicus 23-33 2868784-2 1986 In substantia nigra Met5-enkephalin-Arg6-Gly7-Leu8 was increased and no change was observed in dynorphin A1-8 content. arg6-gly7-leu8 36-50 proenkephalin Rattus norvegicus 25-35 3755528-5 1986 NPY (0.5-1 micrograms) reduced the ICV and IT effects of morphine but potentiated the action of the selective delta-receptor ligand [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE). 2-d-penicillamine 133-150 proenkephalin Rattus norvegicus 171-181 2935695-5 1986 Equimolar concentrations (10(-7)M ) of methionine enkephaline (Met-Enk) and D-ala2-met-enkephalinamide (DALA) produced a significant decrease in LH. methionine enkephaline 39-61 proenkephalin Rattus norvegicus 67-70 2935695-5 1986 Equimolar concentrations (10(-7)M ) of methionine enkephaline (Met-Enk) and D-ala2-met-enkephalinamide (DALA) produced a significant decrease in LH. Luteinizing Hormone 145-147 proenkephalin Rattus norvegicus 67-70 3517687-3 1986 The peroxidase-antiperoxidase reaction product was intensified by the selective deposition of silver crystals in order to display the morphology of proenkephalin-containing neurons with great fidelity. Silver 94-100 proenkephalin Rattus norvegicus 148-161 3517691-2 1986 Phencyclidine and related psychotomimetic drugs, applied in known concentrations in the fluid bathing the slice, depressed responses to N-methyl-D-aspartic acid noradrenaline (in the presence of the uptake inhibitor desmethylimipramine) and [D-Ala2,MePhe4,Gly-ol5]enkephalin and also prolonged the action potential. Phencyclidine 0-13 proenkephalin Rattus norvegicus 264-274 3517691-3 1986 The sensitivities of these responses to depression by phencyclidine was N-methyl-D-aspartic acid (IC50 0.4 microM) greater than noradrenaline (IC50 3.9 microM) greater than [D-Ala2,MePhe4,Gly-ol5]enkephalin (IC50 8.5 microM) greater than prolongation of the action potential (41% increase by 30 microM). Phencyclidine 54-67 proenkephalin Rattus norvegicus 196-206 3517691-3 1986 The sensitivities of these responses to depression by phencyclidine was N-methyl-D-aspartic acid (IC50 0.4 microM) greater than noradrenaline (IC50 3.9 microM) greater than [D-Ala2,MePhe4,Gly-ol5]enkephalin (IC50 8.5 microM) greater than prolongation of the action potential (41% increase by 30 microM). Norepinephrine 128-141 proenkephalin Rattus norvegicus 196-206 3516403-3 1986 The highest concentration of immunoreactive met5-enk-arg6-gly7-leu8 was observed in the colon, while intermediate concentrations were found in the stomach, duodenum, jejunum, and ileum. gly7-leu8 58-67 proenkephalin Rattus norvegicus 49-52 3702876-3 1986 The detailed study, by competitive assay, of the interaction between this antibody and various enkephalin derivatives shows that the carboxy-terminal part of the molecule and, particularly, the leu side chain constitutes the immunodominant group. Leucine 194-197 proenkephalin Rattus norvegicus 95-105 3101414-8 1986 Pepsin-generated iENK gave three major peaks during HPLC, one of which (ca, 25%) co-eluted with oxidized ENK and also registered in a radioreceptor assay for opiate-related substances. Opiate Alkaloids 158-164 proenkephalin Rattus norvegicus 18-21 3002521-2 1986 [DAla2, DLeu5]-enkephalin (DADLE) and [DAla2, MePhe4, Gly5-ol]-enkephalin (DAMPGE) were the most selective agonists of delta- and mu-opiate receptors, respectively. mephe4 46-52 proenkephalin Rattus norvegicus 63-73 3123942-2 1986 Thiorphan-sensitive enkephalinase hydrolysis of [leu]enkephalin could not be detected in plasma. Thiorphan 0-9 proenkephalin Rattus norvegicus 20-30 3504246-3 1986 One week following the lesion, animals exhibiting complete withdrawal of the injured limb, showed bilateral reduction of met- and leu-enkephalin content of PAG. pag 156-159 proenkephalin Rattus norvegicus 134-144 2828955-3 1986 The pronounced inhibition of the binding of 1 nM [3H]D-Ala2-D-Leu5-enkephalin (DADLE) by 100 mM Na+ was reversed by Mn++ to the levels seen in the absence of ions both in adults and in 10-day-old neonates. DADLE 79-84 proenkephalin Rattus norvegicus 67-77 2828957-3 1986 Autoradiography of the sodium dodecyl sulfate gel electrophoresis of the solubilized and reduced membranes showed that a protein having an apparent molecular weight of 46,000 daltons was specifically labeled, suggesting that this protein may be the opioid (enkephalin) receptor. Sodium Dodecyl Sulfate 23-45 proenkephalin Rattus norvegicus 257-267 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. FAB protocol 26-29 proenkephalin Rattus norvegicus 139-149 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. FAB protocol 26-29 proenkephalin Rattus norvegicus 211-221 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. Tritium 109-111 proenkephalin Rattus norvegicus 139-149 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. Tritium 109-111 proenkephalin Rattus norvegicus 211-221 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. mephe4 121-127 proenkephalin Rattus norvegicus 139-149 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. Tritium 191-193 proenkephalin Rattus norvegicus 139-149 2429858-2 1986 The effect of striatal ibotenic acid lesions on dynorphin-, substance P- and enkephalin-like immunoreactivities in the substantia nigra has been studied with immunohistochemistry as well as biochemistry. Ibotenic Acid 23-36 proenkephalin Rattus norvegicus 77-87 2432439-8 1986 In the THC-treated animals, the met-enkephalin and beta-end LI levels were lower in the AHPOA and higher in the MBH. Dronabinol 7-10 proenkephalin Rattus norvegicus 36-46 3123943-12 1986 The ENK-degrading AP, partially purified from primary rat brain astrocyte cell membranes, exhibited a smaller apparent Mr value (130 kDa) and a higher sensitivity to amastatin (IC50: 0.4 microM), bestatin (IC50: 90 nM) and puromycin (IC50: 5 microM) than did the N1E-115 enzyme. amastatin 166-175 proenkephalin Rattus norvegicus 4-7 3123943-12 1986 The ENK-degrading AP, partially purified from primary rat brain astrocyte cell membranes, exhibited a smaller apparent Mr value (130 kDa) and a higher sensitivity to amastatin (IC50: 0.4 microM), bestatin (IC50: 90 nM) and puromycin (IC50: 5 microM) than did the N1E-115 enzyme. ubenimex 196-204 proenkephalin Rattus norvegicus 4-7 3123943-12 1986 The ENK-degrading AP, partially purified from primary rat brain astrocyte cell membranes, exhibited a smaller apparent Mr value (130 kDa) and a higher sensitivity to amastatin (IC50: 0.4 microM), bestatin (IC50: 90 nM) and puromycin (IC50: 5 microM) than did the N1E-115 enzyme. Puromycin 223-232 proenkephalin Rattus norvegicus 4-7 3123944-2 1986 Its origin from enkephalin neurons is suggested by its regional distribution paralleling that of (Met5)-enkephalin (YGGFM), its decrease following kainate-induced ablation of the striato-pallidal neurons and its enhanced formation following depolarization of pallidal slices. Kainic Acid 147-154 proenkephalin Rattus norvegicus 16-26 3123944-2 1986 Its origin from enkephalin neurons is suggested by its regional distribution paralleling that of (Met5)-enkephalin (YGGFM), its decrease following kainate-induced ablation of the striato-pallidal neurons and its enhanced formation following depolarization of pallidal slices. Kainic Acid 147-154 proenkephalin Rattus norvegicus 104-114 2828974-2 1986 In a titrable manner, the Fab fragments noncompetitively inhibited the binding of the mu selective peptide, [3H][D-Ala2, MePhe4, 2Gly-ol5] enkephalin (DAGO) and the delta selective peptide, [3H][D-Pen2, D-Pen5] enkephalin (DPDPE), to neural membranes. [d-pen2, 194-202 proenkephalin Rattus norvegicus 139-149 3123942-3 1986 On the other hand, 2-d-ala-l-[leu]enkephalin is metabolized approximately 35% by an unidentified bestatin-sensitive enzyme and approximately 15% by thiorphan-sensitive enkephalinase in rat plasma, while captopril-sensitive angiotensin converting enzyme is without measurable activity against this substrate. Captopril 203-212 proenkephalin Rattus norvegicus 34-44 3123960-2 1986 Valproate administered at both 300 and 600 mg/kg doses induces an increase of enkephalin levels in striatum, hypothalamus, brain stem and cortex. Valproic Acid 0-9 proenkephalin Rattus norvegicus 78-88 3123964-0 1986 Enkephalin contained in dentate granule cells is important for kainic acid-induced wet dog shakes. Kainic Acid 63-74 proenkephalin Rattus norvegicus 0-10 4075166-7 1985 In vitro superfusion of GABA (100 microM) produced a approximately equal to 63% decrease in IR-Met-enkephalin released from striatal slices in both saline and acute PTZ-treated rats. gamma-Aminobutyric Acid 24-28 proenkephalin Rattus norvegicus 99-109 3123964-1 1986 Kainic acid (KA) caused an initial decrease and a subsequent rebound in hippocampal enkephalin (ENK) in rats exhibiting wet dog shakes (WDS) without behavioral convulsions. Kainic Acid 0-11 proenkephalin Rattus norvegicus 96-99 3123964-3 1986 Granule-cell destroying injections of colchicine into ventral but not dorsal hippocampus caused a 60% reduction of hippocampal ENK and a complete elimination of KA-induced WDS. Colchicine 38-48 proenkephalin Rattus norvegicus 127-130 3016848-0 1986 Effects of chronic administration of a methionine-enkephalin analogue on the zona glomerulosa of the rat adrenal cortex. Methionine 39-49 proenkephalin Rattus norvegicus 50-60 2828999-2 1986 The dose-response curves of the preferential mu- ligands morphine and [D-Ala2, MePhe4, Gly-ol5] enkephalin (DAGO) were shifted by naloxone at low doses but not by ICI 174,864. mephe4 79-85 proenkephalin Rattus norvegicus 96-106 2828999-2 1986 The dose-response curves of the preferential mu- ligands morphine and [D-Ala2, MePhe4, Gly-ol5] enkephalin (DAGO) were shifted by naloxone at low doses but not by ICI 174,864. Naloxone 130-138 proenkephalin Rattus norvegicus 96-106 2828999-4 1986 [D-Ala2, D-Leu5] enkephalin (DADLE) induced dose-related effects that were weakly antagonized by ICI 174,864 and partly by low-dose naloxone. Naloxone 132-140 proenkephalin Rattus norvegicus 17-27 2829008-0 1986 Binding characteristics of [D-Ala2-MePhe4-Glyol5] enkephalin and [D-Pen2,D-Pen5] enkephalin in rat brain: inhibition studies with fentanyl-like drugs. Fentanyl 130-138 proenkephalin Rattus norvegicus 50-60 2829008-1 1986 We have investigated the binding characteristics of two tritiated enkephalin analogues [D-Ala2-MePhe4-Glyol5] enkephalin (DAGO) and [D-Pen2, D-Pen5] enkephalin (DPDPE) which are highly selective for mu and delta opioid sites respectively, in homogenates of whole rat brain and of the pons/medulla region. tritiated 56-65 proenkephalin Rattus norvegicus 66-76 2829008-1 1986 We have investigated the binding characteristics of two tritiated enkephalin analogues [D-Ala2-MePhe4-Glyol5] enkephalin (DAGO) and [D-Pen2, D-Pen5] enkephalin (DPDPE) which are highly selective for mu and delta opioid sites respectively, in homogenates of whole rat brain and of the pons/medulla region. tritiated 56-65 proenkephalin Rattus norvegicus 110-120 2829008-1 1986 We have investigated the binding characteristics of two tritiated enkephalin analogues [D-Ala2-MePhe4-Glyol5] enkephalin (DAGO) and [D-Pen2, D-Pen5] enkephalin (DPDPE) which are highly selective for mu and delta opioid sites respectively, in homogenates of whole rat brain and of the pons/medulla region. tritiated 56-65 proenkephalin Rattus norvegicus 110-120 2829009-1 1986 The development of rat brain delta-opioid receptors has been studied in the postnatal period using the highly selective delta-site ligand [3H]-[D-Pen2, D-Pen5] enkephalin (DPDPE) in binding studies. Tritium 139-141 proenkephalin Rattus norvegicus 160-170 4075166-0 1985 Pentylenetetrazol-induced seizures produce an increased release of IR-Met-enkephalin from rat striatum in vitro. Pentylenetetrazole 0-17 proenkephalin Rattus norvegicus 74-84 4075166-1 1985 In this work we analyzed the immunoreactive-methionine-enkephalin (IR-Met-enkephalin) levels in several brain regions of rats sacrificed during the tonic extension, induced by acute treatment with pentylenetetrazol (PTZ). Pentylenetetrazole 197-214 proenkephalin Rattus norvegicus 55-65 4075166-1 1985 In this work we analyzed the immunoreactive-methionine-enkephalin (IR-Met-enkephalin) levels in several brain regions of rats sacrificed during the tonic extension, induced by acute treatment with pentylenetetrazol (PTZ). Pentylenetetrazole 197-214 proenkephalin Rattus norvegicus 74-84 2999128-5 1985 The purified immunoglobulin inhibited the binding of [3H]dihydromorphine in a titrable, saturable, and reversible manner, as well as the binding of the delta-ligand [3H][D-Ala2,D-Leu5]enkephalin, the kappa-ligand [3H] ethylketocyclazocine, and 3H-labeled antagonists. Tritium 166-168 proenkephalin Rattus norvegicus 184-194 2999128-5 1985 The purified immunoglobulin inhibited the binding of [3H]dihydromorphine in a titrable, saturable, and reversible manner, as well as the binding of the delta-ligand [3H][D-Ala2,D-Leu5]enkephalin, the kappa-ligand [3H] ethylketocyclazocine, and 3H-labeled antagonists. Tritium 166-168 proenkephalin Rattus norvegicus 184-194 2999545-3 1985 Opiate agonists inhibited K+-induced 3H-GABA efflux in the following decreasing order of potency: bremazocine greater than D-Ala2-Met5-enkephalinamide (ENK) greater than SKF 10047 much greater than morphine, consistent with the participation of kappa, delta, sigma and to a lesser extent mu opiate receptors respectively. Tritium 37-39 proenkephalin Rattus norvegicus 152-155 2999545-4 1985 Naloxone (1 microM) partially antagonised the response to morphine and ENK, while ICI 154129 attenuated ENK only. Naloxone 0-8 proenkephalin Rattus norvegicus 71-74 4075166-7 1985 In vitro superfusion of GABA (100 microM) produced a approximately equal to 63% decrease in IR-Met-enkephalin released from striatal slices in both saline and acute PTZ-treated rats. Pentylenetetrazole 165-168 proenkephalin Rattus norvegicus 99-109 4075166-9 1985 Our results suggest that of several brain regions tested, only the striatal IR-Met-enkephalin may be released during the ictus to mediate postictal behavior in the acute PTZ treated and in PTZ-kindled rats. Pentylenetetrazole 170-173 proenkephalin Rattus norvegicus 83-93 4075166-9 1985 Our results suggest that of several brain regions tested, only the striatal IR-Met-enkephalin may be released during the ictus to mediate postictal behavior in the acute PTZ treated and in PTZ-kindled rats. Pentylenetetrazole 189-192 proenkephalin Rattus norvegicus 83-93 4078631-1 1985 The administration of reserpine increases enkephalin content in rat striatum and adrenal medulla. Reserpine 22-31 proenkephalin Rattus norvegicus 42-52 2417870-1 1985 The cyclic AMP efflux from rat neostriatal slices induced by simultaneous activation of D-1 (stimulatory) and D-2 (inhibitory) dopamine receptors with 30 microM dopamine was inhibited by morphine (0.3-3 microM), [D-Ala2, D-Leu5]enkephalin (DADLE, 0.03-0.3 microM) but not by [D-Pen2, D-Pen5]enkephalin (DPDPE, 0.03-0.3 microM). Cyclic AMP 4-14 proenkephalin Rattus norvegicus 228-238 2417870-1 1985 The cyclic AMP efflux from rat neostriatal slices induced by simultaneous activation of D-1 (stimulatory) and D-2 (inhibitory) dopamine receptors with 30 microM dopamine was inhibited by morphine (0.3-3 microM), [D-Ala2, D-Leu5]enkephalin (DADLE, 0.03-0.3 microM) but not by [D-Pen2, D-Pen5]enkephalin (DPDPE, 0.03-0.3 microM). Cyclic AMP 4-14 proenkephalin Rattus norvegicus 291-301 2417870-1 1985 The cyclic AMP efflux from rat neostriatal slices induced by simultaneous activation of D-1 (stimulatory) and D-2 (inhibitory) dopamine receptors with 30 microM dopamine was inhibited by morphine (0.3-3 microM), [D-Ala2, D-Leu5]enkephalin (DADLE, 0.03-0.3 microM) but not by [D-Pen2, D-Pen5]enkephalin (DPDPE, 0.03-0.3 microM). Morphine 187-195 proenkephalin Rattus norvegicus 228-238 2417870-1 1985 The cyclic AMP efflux from rat neostriatal slices induced by simultaneous activation of D-1 (stimulatory) and D-2 (inhibitory) dopamine receptors with 30 microM dopamine was inhibited by morphine (0.3-3 microM), [D-Ala2, D-Leu5]enkephalin (DADLE, 0.03-0.3 microM) but not by [D-Pen2, D-Pen5]enkephalin (DPDPE, 0.03-0.3 microM). Morphine 187-195 proenkephalin Rattus norvegicus 291-301 4078631-5 1985 Reserpine (2 mg/kg, i.p., repeated daily for two consecutive days) led 3 to 5 days later to an increase in the striatal content of proenkephalin mRNA as well as high and low molecular weight peptides containing enkephalin. Reserpine 0-9 proenkephalin Rattus norvegicus 131-144 4078631-5 1985 Reserpine (2 mg/kg, i.p., repeated daily for two consecutive days) led 3 to 5 days later to an increase in the striatal content of proenkephalin mRNA as well as high and low molecular weight peptides containing enkephalin. Reserpine 0-9 proenkephalin Rattus norvegicus 134-144 4078631-7 1985 The results in striatum suggest that reserpine increases enkephalin synthesis by removing a tonic dopaminergic inhibition: those in adrenal medulla indicate that reserpine causes an accumulation of enkephalins by blocking the release and/or increasing the processing which may trigger a feedback-regulatory mechanism leading to a decrease in proenkephalin mRNA content. Reserpine 37-46 proenkephalin Rattus norvegicus 57-67 4078631-7 1985 The results in striatum suggest that reserpine increases enkephalin synthesis by removing a tonic dopaminergic inhibition: those in adrenal medulla indicate that reserpine causes an accumulation of enkephalins by blocking the release and/or increasing the processing which may trigger a feedback-regulatory mechanism leading to a decrease in proenkephalin mRNA content. Reserpine 162-171 proenkephalin Rattus norvegicus 342-355 4080113-0 1985 Elevated potassium stimulates enkephalin biosynthesis in bovine chromaffin cells. Potassium 9-18 proenkephalin Rattus norvegicus 30-40 3834418-0 1985 Blood pressure responses of conscious rats to intravenous administration of enkephalin derivatives (D-ala2 methionine and leucine enkephalinamide, and methionine and leucine enkephalinamide. d-ala2 methionine 100-117 proenkephalin Rattus norvegicus 76-86 4080113-0 1985 Elevated potassium stimulates enkephalin biosynthesis in bovine chromaffin cells. chromaffin 64-74 proenkephalin Rattus norvegicus 30-40 4080113-1 1985 Exposure of bovine adrenal medullary cells in culture to a depolarizing concentration of potassium (50 mM), causes a rapid rise in both cellular and secreted Met-enkephalin peptide. Potassium 89-98 proenkephalin Rattus norvegicus 162-172 4080113-4 1985 Potassium stimulation of Met-enkephalin biosynthesis requires the presence of extracellular Ca2+ and is not observed in either low Ca2+ medium or in the presence of D600, a Ca2+ channel blocker. Potassium 0-9 proenkephalin Rattus norvegicus 29-39 3865779-0 1985 In vitro and in vivo effects of kelatorphan on enkephalin metabolism in rodent brain. kelatorphan 32-43 proenkephalin Rattus norvegicus 47-57 3865779-2 1985 Kelatorphan almost completely inhibited the formation of the three metabolites [3H]Tyr, [3H]Tyr-Gly and [3H]Tyr-Gly-Gly produced by incubation of [3H][Tyr1,Met5]enkephalin with rat striatal slices. kelatorphan 0-11 proenkephalin Rattus norvegicus 161-171 3865779-3 1985 Co-administered with [Met5]enkephalin in mouse brain, kelatorphan was able to prevent by 80% the degradation of the exogenous peptide. kelatorphan 54-65 proenkephalin Rattus norvegicus 27-37 3865779-4 1985 Moreover, a mixture of thiorphan (1 microM) and bestatin (20 microM) or kelatorphan alone (20 microM) induced a 2.2 to 2.5-fold increase in endogenous [Met5]enkephalin overflow after evoked depolarization of superfused rat striatal slices. Thiorphan 23-32 proenkephalin Rattus norvegicus 157-167 3865779-4 1985 Moreover, a mixture of thiorphan (1 microM) and bestatin (20 microM) or kelatorphan alone (20 microM) induced a 2.2 to 2.5-fold increase in endogenous [Met5]enkephalin overflow after evoked depolarization of superfused rat striatal slices. ubenimex 48-56 proenkephalin Rattus norvegicus 157-167 3865779-4 1985 Moreover, a mixture of thiorphan (1 microM) and bestatin (20 microM) or kelatorphan alone (20 microM) induced a 2.2 to 2.5-fold increase in endogenous [Met5]enkephalin overflow after evoked depolarization of superfused rat striatal slices. kelatorphan 72-83 proenkephalin Rattus norvegicus 157-167 3865779-5 1985 In this assay, kelatorphan was the only compound to increase by 63% the basal level of released [Met5]enkephalin. kelatorphan 15-26 proenkephalin Rattus norvegicus 102-112 3834418-1 1985 The present study was designed to determine the blood pressure (BP) responses of conscious rats given intravenous (IV) injections of enkephalin derivatives (D-ala2-methionine enkephalinamide, DAMEA; D-ala2-leucine enkephalinamide, DALEA; methionine enkephalinamide, MEA; leucine enkephalinamide, LEA) and the receptor mechanisms mediating the resultant change in BP. d-ala2-leucine enkephalinamide 199-229 proenkephalin Rattus norvegicus 133-143 3834418-0 1985 Blood pressure responses of conscious rats to intravenous administration of enkephalin derivatives (D-ala2 methionine and leucine enkephalinamide, and methionine and leucine enkephalinamide. Methionine 107-117 proenkephalin Rattus norvegicus 76-86 2867500-1 1985 Age-related changes in the brain"s saturable, specific, carrier-mediated transport system for the small, N-tyrosinated peptides Tyr-MIF-1 (Tyr-Pro-Leu-Gly-NH2) and methionine-enkephalin (Met-Enk) were studied in Fischer 344 rats aged 4 and 26 months. Tyrosine 128-131 proenkephalin Rattus norvegicus 175-185 2998381-1 1985 Naltrexone was administered to rats for 7 days by osmotic minipump (5 mg/kg/day) and thereupon, forebrain mu opioid receptor levels in subcellular fractions were monitored by homologous displacement of [3H]D-ala2-mePhe4-gly-ol5 enkephalin binding. Naltrexone 0-10 proenkephalin Rattus norvegicus 228-238 3934576-0 1985 Mesolimbic dopamine lesions produce an augmented behavioral response to enkephalin. Dopamine 11-19 proenkephalin Rattus norvegicus 72-82 2867500-1 1985 Age-related changes in the brain"s saturable, specific, carrier-mediated transport system for the small, N-tyrosinated peptides Tyr-MIF-1 (Tyr-Pro-Leu-Gly-NH2) and methionine-enkephalin (Met-Enk) were studied in Fischer 344 rats aged 4 and 26 months. Tyrosine 128-131 proenkephalin Rattus norvegicus 191-194 2867500-5 1985 In addition, blood concentrations of Tyr-MIF-1-like immunoactivity were nearly doubled in aged rats (3.24 +/- 0.373 vs 1.67 +/- 0.0904 pM/ml), while blood concentrations of Met-Enk-like immunoactivity and brain concentrations of immunoactive Tyr-MIF-1 and Met-Enk showed no statistically significant difference between age groups. Tyrosine 37-40 proenkephalin Rattus norvegicus 177-180 2867500-5 1985 In addition, blood concentrations of Tyr-MIF-1-like immunoactivity were nearly doubled in aged rats (3.24 +/- 0.373 vs 1.67 +/- 0.0904 pM/ml), while blood concentrations of Met-Enk-like immunoactivity and brain concentrations of immunoactive Tyr-MIF-1 and Met-Enk showed no statistically significant difference between age groups. Tyrosine 37-40 proenkephalin Rattus norvegicus 260-263 2998890-2 1985 The lei-enkephalin analogue was shown to hinder the changes of these parameters induced with adrenaline. Epinephrine 93-103 proenkephalin Rattus norvegicus 8-18 4047342-11 1985 Leucine enkephalin (50 micrograms) stimulated LH and inhibited PRL release, while methionine-enkephalin (50 micrograms) selectively stimulated PRL release. Luteinizing Hormone 46-48 proenkephalin Rattus norvegicus 8-18 2995978-2 1985 Low concentrations of [D-Ala2, D-Leu5]enkephalin selectively inhibit the mu1 binding of [3H]dihydromorphine, leaving mu2 sites, while low morphine concentrations eliminate the mu1 binding of [3H][D-Ala2, D-Leu5]enkephalin, leaving delta sites. 3h]dihydromorphine 89-107 proenkephalin Rattus norvegicus 38-48 4047342-12 1985 The methionine-enkephalin analogs, FK-33824 (50 ng) and DALAMID (50 micrograms), evoked sequential PRL and LH responses similar to those seen after beta E injection. Methionine 4-14 proenkephalin Rattus norvegicus 15-25 2995978-2 1985 Low concentrations of [D-Ala2, D-Leu5]enkephalin selectively inhibit the mu1 binding of [3H]dihydromorphine, leaving mu2 sites, while low morphine concentrations eliminate the mu1 binding of [3H][D-Ala2, D-Leu5]enkephalin, leaving delta sites. Morphine 99-107 proenkephalin Rattus norvegicus 38-48 4047342-12 1985 The methionine-enkephalin analogs, FK-33824 (50 ng) and DALAMID (50 micrograms), evoked sequential PRL and LH responses similar to those seen after beta E injection. Luteinizing Hormone 107-109 proenkephalin Rattus norvegicus 15-25 2995978-2 1985 Low concentrations of [D-Ala2, D-Leu5]enkephalin selectively inhibit the mu1 binding of [3H]dihydromorphine, leaving mu2 sites, while low morphine concentrations eliminate the mu1 binding of [3H][D-Ala2, D-Leu5]enkephalin, leaving delta sites. Tritium 89-92 proenkephalin Rattus norvegicus 38-48 2996518-1 1985 Opiate receptors were solubilized from rat brain with digitonin and treated with an affinity resin, AH-Sepharose coupled with [D-Ala2, Leu5]enkephalin. ah-sepharose 100-112 proenkephalin Rattus norvegicus 140-150 3903540-3 1985 Renal denervation abolished the increase in PRA by Leu-ENK. Leucine 51-54 proenkephalin Rattus norvegicus 55-58 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Dopamine 55-63 proenkephalin Rattus norvegicus 324-334 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Dopamine 55-63 proenkephalin Rattus norvegicus 346-356 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Serotonin 66-84 proenkephalin Rattus norvegicus 324-334 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Serotonin 66-84 proenkephalin Rattus norvegicus 346-356 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Acetylcholine 97-110 proenkephalin Rattus norvegicus 324-334 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Acetylcholine 97-110 proenkephalin Rattus norvegicus 346-356 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Glutamic Acid 112-125 proenkephalin Rattus norvegicus 324-334 2413943-5 1985 The highest frequency was observed at 27-28 degrees C. Dopamine, 5-hydroxytryptamine, histamine, acetylcholine, glutamic acid, substance P, and thyrotropin releasing hormone accelerated the respiratory frequency when applied by perfusion to the brainstem, whereas noradrenaline, gamma-aminobutyric acid, glycine, and [Met5] enkephalin and [Leu5] enkephalin slowed the frequency. Glutamic Acid 112-125 proenkephalin Rattus norvegicus 346-356 2413968-6 1985 The low molecular weight, N-tyrosinated peptides (leucine-enkephalin, methionine enkephalin, N-Tyr-MIF-1, and N-Tyr-FMRF), that have been shown to be transported out of the brain by a saturable, carrier-mediated system, had much lower penetration rates than those predicted by their octanol coefficients. n-tyrosinated peptides 26-48 proenkephalin Rattus norvegicus 58-68 2994775-0 1985 [Mechanism of the antistressor effect of D-Ala(2)-Leu(5)-Arg(6)-enkephalin]. d-ala(2)-leu(5)-arg 41-60 proenkephalin Rattus norvegicus 64-74 3910797-16 1985 The role of main enkephalin degrading enzymes in the brain was discussed with respect to the analgesic action of thiorphan and its concentration in the brain. Thiorphan 113-122 proenkephalin Rattus norvegicus 17-27 3903540-6 1985 These results suggest that the renal nerve plays an important role in elevating PRA after central stimulation by Leu-ENK. Leucine 113-116 proenkephalin Rattus norvegicus 117-120 3903250-5 1985 As compared to normal rats, suppression of PRA by ANG II and NT was attenuated or abolished but BK and Leu-ENK produced significant reductions in PRA in 2K-1C hypertensive rats. Leucine 103-106 proenkephalin Rattus norvegicus 107-110 2997666-0 1985 Regional differences in mu 1-binding of [3H][D-Ala2,D-Leu5]-enkephalin: comparisons of thalamus and cortex in the rat. Tritium 41-43 proenkephalin Rattus norvegicus 60-70 2997666-2 1985 Competition studies indicated that approximately 60% of [3H][D-Ala2,D-Leu5]-enkephalin ([3H]DADLE) binding in the thalamus was inhibited by low concentrations of morphine (2-5 nM). Tritium 57-60 proenkephalin Rattus norvegicus 76-86 2997666-2 1985 Competition studies indicated that approximately 60% of [3H][D-Ala2,D-Leu5]-enkephalin ([3H]DADLE) binding in the thalamus was inhibited by low concentrations of morphine (2-5 nM). Tritium 57-59 proenkephalin Rattus norvegicus 76-86 2997666-2 1985 Competition studies indicated that approximately 60% of [3H][D-Ala2,D-Leu5]-enkephalin ([3H]DADLE) binding in the thalamus was inhibited by low concentrations of morphine (2-5 nM). Morphine 162-170 proenkephalin Rattus norvegicus 76-86 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. 2-d-penicillamine 54-71 proenkephalin Rattus norvegicus 32-42 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. 2-d-penicillamine 54-71 proenkephalin Rattus norvegicus 87-97 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. 2-d-penicillamine 54-71 proenkephalin Rattus norvegicus 87-97 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. 2-d-penicillamine 54-71 proenkephalin Rattus norvegicus 87-97 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. DPLCE 99-104 proenkephalin Rattus norvegicus 32-42 2992671-5 1985 The conformationally restricted enkephalin analogues [2-D-penicillamine, 5-L-cysteine] enkephalin (DPLCE), [2-D-penicillamine, 5-L-penicillamine] enkephalin (DPLPE) and [2-D-penicillamine, 5-D-penicillamine] enkephalin (DPDPE) produced dose-related inhibition of reflex bladder contractions when administered by the i.c.v. [2-d-penicillamine 53-71 proenkephalin Rattus norvegicus 32-42 2992671-11 1985 The antagonism observed was selective since the equipotent inhibition produced by the mu-opioid receptor agonist [D-Ala2, Me-Phe4, Gly(ol)5] enkephalin (DAGO) was unaffected. me-phe4 122-129 proenkephalin Rattus norvegicus 141-151 2410576-3 1985 Within the LSn, antisera against dynorphin 1-8 (DYN), substance P (SP), and Met-enkephalin (ENK) produced labeling of a large number of processes in all segmental levels examined. lsn 11-14 proenkephalin Rattus norvegicus 92-95 2987638-1 1985 Displacement studies of [3H]-[D-Ala2-MePhe4-Gly-ol5]-enkephalin ([3H]-DAGO) and [3H]-[D-Ala2-D-Leu5]-enkephalin ([3H]-DADL) by the corresponding unlabeled ligands show that there are at least three classes of sites which bind these enkephalin analogs with high affinity. Tritium 25-27 proenkephalin Rattus norvegicus 53-63 4021999-1 1985 The repeated administration of haloperidol or fenfluramine for several days led to an increase of enkephalin content in specific brain areas. Haloperidol 31-42 proenkephalin Rattus norvegicus 98-108 4021999-1 1985 The repeated administration of haloperidol or fenfluramine for several days led to an increase of enkephalin content in specific brain areas. Fenfluramine 46-58 proenkephalin Rattus norvegicus 98-108 4021999-5 1985 Haloperidol treatment increased enkephalins, the precursor, and PE-mRNA content in the striatum, suggesting that this drug might increase enkephalin steady state by increasing transcription, translation, or both processes. Haloperidol 0-11 proenkephalin Rattus norvegicus 32-42 4021999-6 1985 In contrast, fenfluramine increased hypothalamic and striatal enkephalin content by preferentially reducing neuropeptide utilization or decreasing its catabolism without changing its synthesis. Fenfluramine 13-25 proenkephalin Rattus norvegicus 62-72 2863790-1 1985 The effect of methionine-enkephalin (Met-Enk) on responses of rat brain neostriatum neurones to microiontophoretic application of glutamate was studied in experiments with extracellular recording of spike activity. Glutamic Acid 130-139 proenkephalin Rattus norvegicus 41-44 2863790-2 1985 Met-Enk administered by microiontophoresis was shown to depress the glutamate-induced responses. Glutamic Acid 68-77 proenkephalin Rattus norvegicus 4-7 2863790-3 1985 In parallel experiments with synaptic membranes isolated from the striatum it was shown that Met-Enk reduces specific binding of glutamate. Glutamic Acid 129-138 proenkephalin Rattus norvegicus 97-100 2863790-5 1985 The data obtained show that the depressive effect of Met-Enk may be due to the inhibitory influence of the peptide on glutamate binding to its postsynaptic receptors. Glutamic Acid 118-127 proenkephalin Rattus norvegicus 57-60 2995863-0 1985 Sulfonic acid enkephalin: binding specificity to rat brain opiate receptors. Sulfonic Acids 0-13 proenkephalin Rattus norvegicus 14-24 2995863-1 1985 We tested sulfonic-acid enkephalin, a SO3H-Tyr derivative of the Leu-enkephalin, for its binding capacity to rat brain opiate receptors, by competition against several tritiated enkephalins. so3h-tyr 38-46 proenkephalin Rattus norvegicus 24-34 2995863-2 1985 Using [3H]DADLE as the competitor, we demonstrated that sulfonic-acid enkephalin binds to rat brain opiate receptors, and using [3H]DSLET and [3H]DAGO as the competitors, we demonstrated that sulfonic-acid enkephalin binds preferentially to delta-opiate receptors. Tritium 7-9 proenkephalin Rattus norvegicus 70-80 2995863-2 1985 Using [3H]DADLE as the competitor, we demonstrated that sulfonic-acid enkephalin binds to rat brain opiate receptors, and using [3H]DSLET and [3H]DAGO as the competitors, we demonstrated that sulfonic-acid enkephalin binds preferentially to delta-opiate receptors. Tritium 129-131 proenkephalin Rattus norvegicus 70-80 2995863-2 1985 Using [3H]DADLE as the competitor, we demonstrated that sulfonic-acid enkephalin binds to rat brain opiate receptors, and using [3H]DSLET and [3H]DAGO as the competitors, we demonstrated that sulfonic-acid enkephalin binds preferentially to delta-opiate receptors. Tritium 129-131 proenkephalin Rattus norvegicus 70-80 2989631-3 1985 Morphine"s affinity for opioid receptors labeled in vitro with 3H-naloxone or 3H-D-Ala2-D-Leu5-enkephalin was not altered by fluoxetine, which has no affinity for these sites at concentrations as high as 1000 nM. Morphine 0-8 proenkephalin Rattus norvegicus 95-105 3897912-6 1985 The Met-Enk-Arg-Gly-Leu-like immunoreactivity demonstrated in this study suggests the occurrence of preproenkephalin A and related opioid peptides. Arginine 12-15 proenkephalin Rattus norvegicus 8-11 3897912-6 1985 The Met-Enk-Arg-Gly-Leu-like immunoreactivity demonstrated in this study suggests the occurrence of preproenkephalin A and related opioid peptides. Glycine 16-19 proenkephalin Rattus norvegicus 8-11 3897912-6 1985 The Met-Enk-Arg-Gly-Leu-like immunoreactivity demonstrated in this study suggests the occurrence of preproenkephalin A and related opioid peptides. Leucine 20-23 proenkephalin Rattus norvegicus 8-11 2858918-1 1985 Specific radioimmunoassays were used to measure the effects of hypertonic saline (salt loading), water deprivation, and trichothecene mycotoxin (T2 toxin) on the content of methionine enkephalin (ME), leucine enkephalin (LE), alpha-neoendorphin, dynorphin A, dynorphin B, vasopressin, and oxytocin in the rat posterior pituitary. trichothecene mycotoxin 120-143 proenkephalin Rattus norvegicus 184-194 3891013-4 1985 In the sequential immunostaining of one and the same section of the spinal cord pretreated with colchicine using the ChAT antibody and a polyclonal antibody against methionine-enkephalin-argynine-glycine-leucine (Met-Enk-Arg-Gly-Leu), substantial numbers of neurons were immunostained simultaneously by the two antibodies in the intermediate gray matter. argynine-glycine-leucine 187-211 proenkephalin Rattus norvegicus 176-186 3894037-2 1985 In parallel experiments, following chronic treatment with clomipramine, iprindole and nomifensin striatal [Leu5]enkephalin-like immunoreactivity ([Leu5]ELI) was also significantly enhanced. Clomipramine 58-70 proenkephalin Rattus norvegicus 112-122 2990953-0 1985 Increased affinity and selectivity of enkephalin tripeptide (Tyr-D-Ala-Gly) dimers. tripeptide K-26 49-59 proenkephalin Rattus norvegicus 38-48 2990953-0 1985 Increased affinity and selectivity of enkephalin tripeptide (Tyr-D-Ala-Gly) dimers. tyr-d-ala-gly 61-74 proenkephalin Rattus norvegicus 38-48 3838946-2 1985 Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. Oxidopamine 203-220 proenkephalin Rattus norvegicus 70-80 3838946-2 1985 Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. Reserpine 285-294 proenkephalin Rattus norvegicus 70-80 3838946-2 1985 Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. Haloperidol 298-309 proenkephalin Rattus norvegicus 70-80 3838946-2 1985 Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. Dopamine 119-127 proenkephalin Rattus norvegicus 70-80 3838946-2 1985 Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. Dopamine 334-336 proenkephalin Rattus norvegicus 70-80 2989719-1 1985 [Tyr-3,5-3H]1, D-Ala2, Leu5-enkephalin [( 3H]DALA) was used for labeling the opioid receptors of rat brain plasma membranes. Tritium 9-11 proenkephalin Rattus norvegicus 28-38 2990953-1 1985 The binding of alkylendiamide dimers of the three N-terminal residues of [D-Ala2,D-Leu5]enkephalin (DADL) to rat brain and Ng108-15 neuroblastoma-glioma cell membranes was compared with that of DADL, Tyr-D-Ala-Gly-NMe-Phe-Gly-ol (DAGO) and morphiceptin. alkylendiamide 15-29 proenkephalin Rattus norvegicus 88-98 2990953-1 1985 The binding of alkylendiamide dimers of the three N-terminal residues of [D-Ala2,D-Leu5]enkephalin (DADL) to rat brain and Ng108-15 neuroblastoma-glioma cell membranes was compared with that of DADL, Tyr-D-Ala-Gly-NMe-Phe-Gly-ol (DAGO) and morphiceptin. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 200-228 proenkephalin Rattus norvegicus 88-98 2990953-1 1985 The binding of alkylendiamide dimers of the three N-terminal residues of [D-Ala2,D-Leu5]enkephalin (DADL) to rat brain and Ng108-15 neuroblastoma-glioma cell membranes was compared with that of DADL, Tyr-D-Ala-Gly-NMe-Phe-Gly-ol (DAGO) and morphiceptin. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 230-234 proenkephalin Rattus norvegicus 88-98 2989719-2 1985 The labeled ligand was prepared from [Tyr-3,5-diiodo]1, D-Ala2, Leu5-enkephalin by catalytic reductive dehalogenation in the presence of Pd catalyst. [tyr-3,5-diiodo]1, d-ala2 37-62 proenkephalin Rattus norvegicus 69-79 2989719-2 1985 The labeled ligand was prepared from [Tyr-3,5-diiodo]1, D-Ala2, Leu5-enkephalin by catalytic reductive dehalogenation in the presence of Pd catalyst. Palladium 137-139 proenkephalin Rattus norvegicus 69-79 2989719-3 1985 The resulting [Tyr-3,5-3H]1, D-Ala2, Leu5-enkephalin had a specific activity of 37.3 Ci/mmol. [tyr-3,5-3h]1, d-ala2 14-35 proenkephalin Rattus norvegicus 42-52 2985440-0 1985 Comparative binding properties of linear and cyclic delta-selective enkephalin analogues: [3H]-[D-Thr2, Leu5] enkephalyl-Thr6 and [3H]-[D-Pen2, D-Pen5] enkephalin. [3h]-[d-thr2, leu5] enkephalyl-thr6 90-125 proenkephalin Rattus norvegicus 68-78 3921974-1 1985 Intravenous (iv) injection of FK33-824 [( D-Ala2, MePhe4, Met-(O)5-ol]-enkephalin, 8 and 16 nmole/100 g body wt), a potent Met5-enkephalin analog, and domperidone (1.2, 2.4, and 24 nmole/100 g body wt), a dopamine antagonist, resulted in a dose-related increase in plasma prolactin (PRL) levels in urethane-anesthetized male rats. met-(o)5-ol 58-69 proenkephalin Rattus norvegicus 71-81 2990945-1 1985 In rabbit isolated atria, [D-Ala2,Met5]enkephalinamide and [D-Ala2,D-Leu5]enkephalin (0.1-3 microM) inhibited responses to cholinergic nerve stimulation in a concentration-dependent manner without affecting responses to exogenous acetylcholine. Acetylcholine 230-243 proenkephalin Rattus norvegicus 39-49 2990945-4 1985 Both [D-Ala2,Met5]enkephalinamide and [D-Ala2,D-Leu5]enkephalin (0.3 and 1 microM) significantly decreased stimulation-induced radioactivity release and their effects were blocked by naloxone (1 microM). Naloxone 183-191 proenkephalin Rattus norvegicus 18-28 2990945-5 1985 In rat isolated atria, [D-Ala2,Met5]enkephalinamide and [D-Ala2,D-Leu5]enkephalin (0.3-3 microM) inhibited responses to cholinergic nerve stimulation without affecting responses to exogenous acetylcholine. Acetylcholine 191-204 proenkephalin Rattus norvegicus 36-46 2987762-3 1985 The extent to which noradrenaline evoked an increase in 2-[14C]DG labelling of glycogen was modified by both morphine and methionine-enkephalin. Norepinephrine 20-33 proenkephalin Rattus norvegicus 133-143 2987762-3 1985 The extent to which noradrenaline evoked an increase in 2-[14C]DG labelling of glycogen was modified by both morphine and methionine-enkephalin. 2-[14c]dg 56-65 proenkephalin Rattus norvegicus 133-143 2987762-3 1985 The extent to which noradrenaline evoked an increase in 2-[14C]DG labelling of glycogen was modified by both morphine and methionine-enkephalin. Glycogen 79-87 proenkephalin Rattus norvegicus 133-143 2988685-5 1985 The mu-agonists, [D-Ala2,MePhe4,Gly-ol5]enkephalin and morphine, displaced a small portion of the binding of [3H]-[D-Pen2,D-Pen5]enkephalin with high affinities. mephe4 25-31 proenkephalin Rattus norvegicus 40-50 2988685-5 1985 The mu-agonists, [D-Ala2,MePhe4,Gly-ol5]enkephalin and morphine, displaced a small portion of the binding of [3H]-[D-Pen2,D-Pen5]enkephalin with high affinities. mephe4 25-31 proenkephalin Rattus norvegicus 129-139 2988685-5 1985 The mu-agonists, [D-Ala2,MePhe4,Gly-ol5]enkephalin and morphine, displaced a small portion of the binding of [3H]-[D-Pen2,D-Pen5]enkephalin with high affinities. Morphine 55-63 proenkephalin Rattus norvegicus 129-139 2988685-5 1985 The mu-agonists, [D-Ala2,MePhe4,Gly-ol5]enkephalin and morphine, displaced a small portion of the binding of [3H]-[D-Pen2,D-Pen5]enkephalin with high affinities. Tritium 110-112 proenkephalin Rattus norvegicus 40-50 2988685-5 1985 The mu-agonists, [D-Ala2,MePhe4,Gly-ol5]enkephalin and morphine, displaced a small portion of the binding of [3H]-[D-Pen2,D-Pen5]enkephalin with high affinities. Tritium 110-112 proenkephalin Rattus norvegicus 129-139 3882408-14 1985 This distribution of enzyme activity, together with its preference for oligopeptides as substrates, its ability to generate leu- and met-enkephalin from several larger peptide precursors, and its affinity toward several other bioactive peptides, suggests that the enzyme functions in the metabolism of neuropeptides. Leucine 124-127 proenkephalin Rattus norvegicus 137-147 2859095-2 1985 Treatment of the hippocampal slice with beta-funaltrexamine, a mu-receptor selective antagonist, blocked the effects of normorphine, dynorphin-A and dynorphin-B, but did not change the response to D-Ala2, D-Leu5-enkephalin. beta-funaltrexamine 40-59 proenkephalin Rattus norvegicus 212-222 2985440-1 1985 The range of delta-selectivity of linear and cyclic analogues of enkephalin in rat brain was found to be: [D-Pen2, L-Pen5] enkephalin (DPLPE) greater than [D-Pen2, D-Pen5] enkephalin (DPDPE) greater than [D-Thr2, Leu5] enkephalyl-Thr6 (DTLET) greater than [D-Ser2, Leu5] enkephalyl-Thr6 (DSLET). [d-thr2, leu5] enkephalyl-thr6 204-234 proenkephalin Rattus norvegicus 65-75 2985440-1 1985 The range of delta-selectivity of linear and cyclic analogues of enkephalin in rat brain was found to be: [D-Pen2, L-Pen5] enkephalin (DPLPE) greater than [D-Pen2, D-Pen5] enkephalin (DPDPE) greater than [D-Thr2, Leu5] enkephalyl-Thr6 (DTLET) greater than [D-Ser2, Leu5] enkephalyl-Thr6 (DSLET). deltakephalin 236-241 proenkephalin Rattus norvegicus 65-75 2985440-1 1985 The range of delta-selectivity of linear and cyclic analogues of enkephalin in rat brain was found to be: [D-Pen2, L-Pen5] enkephalin (DPLPE) greater than [D-Pen2, D-Pen5] enkephalin (DPDPE) greater than [D-Thr2, Leu5] enkephalyl-Thr6 (DTLET) greater than [D-Ser2, Leu5] enkephalyl-Thr6 (DSLET). [d-ser2, leu5] enkephalyl-thr6 256-286 proenkephalin Rattus norvegicus 65-75 4038717-2 1985 First, hemocyanin was used as the carrier for the antigen and secondly, a new iodination method for Met5-enkephalin was established, resulting in a [125I]probe with an intact methionyl residue. methionyl 175-184 proenkephalin Rattus norvegicus 105-115 2986120-0 1985 Characterization of [3H][2-D-penicillamine, 5-D-penicillamine]-enkephalin binding to delta opiate receptors in the rat brain and neuroblastoma--glioma hybrid cell line (NG 108-15). 3h][2-d-penicillamine 21-42 proenkephalin Rattus norvegicus 63-73 2581193-7 1985 Similarly, chlordecone treatment reduced the pituitary content of enkephalin in a manner identical to that of estrogen. Chlordecone 11-22 proenkephalin Rattus norvegicus 66-76 2581193-15 1985 Moreover, due to the similarity of both estrogen and chlordecone to anti-dopaminergic agents in altering [Met5]-enkephalin levels in both the pituitary and caudate nucleus it is speculated that a dopaminergic mechanism is responsible for their actions on the enkephalin system. Chlordecone 53-64 proenkephalin Rattus norvegicus 112-122 2581193-15 1985 Moreover, due to the similarity of both estrogen and chlordecone to anti-dopaminergic agents in altering [Met5]-enkephalin levels in both the pituitary and caudate nucleus it is speculated that a dopaminergic mechanism is responsible for their actions on the enkephalin system. Chlordecone 53-64 proenkephalin Rattus norvegicus 259-269 2986120-1 1985 Specific binding properties of the tritium-labeled delta opiate receptor agonist [3H][2-D-penicillamine, 5-D-penicillamine]enkephalin [( 3H][D-Pen2, D-Pen5]enkephalin) were characterized in the rat brain and in a mouse neuroblastoma-rat glioma hybrid cell line (NG 108-15). Tritium 35-42 proenkephalin Rattus norvegicus 123-133 2986120-1 1985 Specific binding properties of the tritium-labeled delta opiate receptor agonist [3H][2-D-penicillamine, 5-D-penicillamine]enkephalin [( 3H][D-Pen2, D-Pen5]enkephalin) were characterized in the rat brain and in a mouse neuroblastoma-rat glioma hybrid cell line (NG 108-15). Tritium 82-84 proenkephalin Rattus norvegicus 123-133 2986120-1 1985 Specific binding properties of the tritium-labeled delta opiate receptor agonist [3H][2-D-penicillamine, 5-D-penicillamine]enkephalin [( 3H][D-Pen2, D-Pen5]enkephalin) were characterized in the rat brain and in a mouse neuroblastoma-rat glioma hybrid cell line (NG 108-15). 2-d-penicillamine 86-103 proenkephalin Rattus norvegicus 123-133 2986120-1 1985 Specific binding properties of the tritium-labeled delta opiate receptor agonist [3H][2-D-penicillamine, 5-D-penicillamine]enkephalin [( 3H][D-Pen2, D-Pen5]enkephalin) were characterized in the rat brain and in a mouse neuroblastoma-rat glioma hybrid cell line (NG 108-15). Tritium 137-139 proenkephalin Rattus norvegicus 123-133 2986120-2 1985 Saturation isotherms of [3H][D-Pen2, D-Pen5]enkephalin binding to rat brain and NG 108-15 membranes gave apparent Kd values of 1-6 nM. Tritium 25-27 proenkephalin Rattus norvegicus 44-54 2986120-2 1985 Saturation isotherms of [3H][D-Pen2, D-Pen5]enkephalin binding to rat brain and NG 108-15 membranes gave apparent Kd values of 1-6 nM. [d-pen2 28-35 proenkephalin Rattus norvegicus 44-54 2986120-2 1985 Saturation isotherms of [3H][D-Pen2, D-Pen5]enkephalin binding to rat brain and NG 108-15 membranes gave apparent Kd values of 1-6 nM. d-pen5 37-43 proenkephalin Rattus norvegicus 44-54 2986120-5 1985 An apparent regional distribution of [3H][D-Pen2, D-Pen5]enkephalin binding was observed in the rat brain. Tritium 38-41 proenkephalin Rattus norvegicus 57-67 3886072-1 1985 The regional quantitation, immunohistochemical localization and molecular heterogeneity of Met5-enkephalin-Arg6-Gly7-Leu8 were examined in rat spinal cord with a specific radioimmunoassay. arg6-gly7-leu8 107-121 proenkephalin Rattus norvegicus 96-106 3886072-7 1985 Total Met5-enkephalin-Arg6-Gly7-Leu8 immunoreactivity could be fractionated into two main components using gel filtration chromatography. arg6-gly7-leu8 22-36 proenkephalin Rattus norvegicus 11-21 3886072-9 1985 The present data, in conjunction with our previous study of Met5-enkephalin and Met5-enkephalin-Arg6-Phe7 indicates that all opioid peptides derived from preproenkephalin A are present in spinal cord and most likely are stored in the same neurons. arg6- 96-101 proenkephalin Rattus norvegicus 85-95 2859917-1 1985 This study was conducted in order to compare the effects of microiontophoretically-applied morphine and met-enkephalin (met-ENK) on spontaneous and/or glutamate-evoked activity of single globus pallidus (GP) neurons in locally anesthetized, paralyzed rats. Glutamic Acid 151-160 proenkephalin Rattus norvegicus 108-118 2982830-0 1985 Proteolytic conversion of [Met]enkephalin-Arg6-Gly7-Leu8 by brain synaptic membranes. arg6-gly7-leu8 42-56 proenkephalin Rattus norvegicus 31-41 2859917-1 1985 This study was conducted in order to compare the effects of microiontophoretically-applied morphine and met-enkephalin (met-ENK) on spontaneous and/or glutamate-evoked activity of single globus pallidus (GP) neurons in locally anesthetized, paralyzed rats. Glutamic Acid 151-160 proenkephalin Rattus norvegicus 124-127 2859917-4 1985 Both the inhibitory and excitatory responses produced by morphine and met-ENK could be attenuated by the microiontophoretic application of naloxone. Naloxone 139-147 proenkephalin Rattus norvegicus 74-77 2859917-6 1985 When applied to the same neurons, morphine elicited depression in 11 of 16 GP neurons which were excited by the application of met-ENK. Morphine 34-42 proenkephalin Rattus norvegicus 131-134 2859917-7 1985 In contrast, neither of two GP neurons excited by morphine in this study displayed inhibition upon application of met-ENK. Morphine 50-58 proenkephalin Rattus norvegicus 118-121 2579319-0 1985 A quantitative study of [3H]D-Ala2-D-Leu5-enkephalin binding to rat brain membranes. Tritium 25-27 proenkephalin Rattus norvegicus 42-52 2983043-4 1985 We utilized 3H-[D-ala2,D-leu5]enkephalin (DADL) in the presence of 10 nM DAGO to label delta sites and 3H-ethylketocyclazocine (EKC) in the presence of 100 nM DADL + 100 nM [D-ala2,mePhe4,Met(0)ol5]enkephalin to detect kappa receptors. DADLE 42-46 proenkephalin Rattus norvegicus 30-40 2983043-4 1985 We utilized 3H-[D-ala2,D-leu5]enkephalin (DADL) in the presence of 10 nM DAGO to label delta sites and 3H-ethylketocyclazocine (EKC) in the presence of 100 nM DADL + 100 nM [D-ala2,mePhe4,Met(0)ol5]enkephalin to detect kappa receptors. DADLE 42-46 proenkephalin Rattus norvegicus 198-208 3838345-7 1985 The probable neurotransmitter function of both [Leu5]enkephalin and dynorphin A was shown by their calcium-dependent release after in vitro depolarization of hippocampal tissue. Calcium 99-106 proenkephalin Rattus norvegicus 53-63 2579319-4 1985 In this study, we examine the interaction of the mu agonist oxymorphone and delta agonist DSTLE (D-Ser2-Thr6-Leu-enkephalin) with [3H]D-Ala2-D-Leu5-enkephalin (DADL) binding to membranes of rat brain. Tritium 131-133 proenkephalin Rattus norvegicus 113-123 2579319-4 1985 In this study, we examine the interaction of the mu agonist oxymorphone and delta agonist DSTLE (D-Ser2-Thr6-Leu-enkephalin) with [3H]D-Ala2-D-Leu5-enkephalin (DADL) binding to membranes of rat brain. Tritium 131-133 proenkephalin Rattus norvegicus 148-158 3839056-0 1985 Kelatorphan: a full inhibitor of enkephalin degrading enzymes. kelatorphan 0-11 proenkephalin Rattus norvegicus 33-43 3839922-1 1985 Metorphamide (Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-NH2) a novel amidated octapeptide fragment of proenkephalin A was synthesized, purified and subsequently shown to inhibit the reflex contractions of the rat urinary bladder following intracerebroventricular and spinal intrathecal microinjections. adrenorphin 14-49 proenkephalin Rattus norvegicus 92-107 2986652-0 1985 [The nature of cation-binding groups in binding sites for [[3H]Tyr1, D-Ala2, D-Leu5]enkephalin]. [[3h]tyr1 58-67 proenkephalin Rattus norvegicus 84-94 2986652-1 1985 The influence of pH on binding of labeled stable analog of enkephalin, [3H]Tyr1, D-Ala2, D-Leu5]enkephalin, to high- and low-affinity receptors of rat brain membranes was studied. Tritium 72-74 proenkephalin Rattus norvegicus 59-69 2986652-1 1985 The influence of pH on binding of labeled stable analog of enkephalin, [3H]Tyr1, D-Ala2, D-Leu5]enkephalin, to high- and low-affinity receptors of rat brain membranes was studied. Tritium 72-74 proenkephalin Rattus norvegicus 96-106 2860602-1 1985 We have measured the content of met- and leu-enkephalin and dynorphin B in the rat hippocampus, and localized these opioid peptides within the intrinsic hippocampal neuronal circuitry with specific lesions. Leucine 41-44 proenkephalin Rattus norvegicus 45-55 4034409-4 1985 The same peaks were also found to possess Met-Enk-immunoreactivity after enzyme digestion of Sephadex G-50 fractions with trypsin and carboxypeptidase B (CPB), suggesting their derivation from proenkephalin. sephadex 93-101 proenkephalin Rattus norvegicus 46-49 3977917-5 1985 The delta agonist [D-Ala2,D-Leu3] enkephalin, the kappa agonist ethylketocyclazocine, and levorphanol, but not the mu agonist [D-ala2,MePhe4,Gly-(ol)5] enkephalin or dextrophan competed variably with [3H]diprenorphine for the binding in the right atrium and ventricle. Levorphanol 90-101 proenkephalin Rattus norvegicus 152-162 2984886-6 1985 In vitro addition of lithium inhibited enkephalin binding to opioid receptors through a reduction in the number of binding sites, while the affinity remained unchanged or was changed only slightly. Lithium 21-28 proenkephalin Rattus norvegicus 39-49 2984011-2 1985 The administration of ketocyclazocine, dynorphin-(1-17) or [Met5]enkephalin[Arg6,Phe7] immediately after initial exposure reversed the effect of adrenalectomy, whereas equimolar doses of morphine sulphate, [D-Ala2,D-Leu5]enkephalin and dynorphin-(1-8) were inactive. ketazocine 22-37 proenkephalin Rattus norvegicus 221-231 2984011-2 1985 The administration of ketocyclazocine, dynorphin-(1-17) or [Met5]enkephalin[Arg6,Phe7] immediately after initial exposure reversed the effect of adrenalectomy, whereas equimolar doses of morphine sulphate, [D-Ala2,D-Leu5]enkephalin and dynorphin-(1-8) were inactive. Morphine 187-204 proenkephalin Rattus norvegicus 65-75 2981743-3 1985 Some 2000 CRF-stained neurons can be counted in the PVH of the colchicine-treated rat, and there is evidence that enkephalin, PHI, and neurotensin coexist with CRF in subsets of parvocellular neurons. Colchicine 63-73 proenkephalin Rattus norvegicus 114-124 2408793-3 1985 Transplantable norepinephrine-rich tumors, which gave rise to significant blood pressure elevations, contained measurable immunoreactive enkephalins as determined by specific radioimmunoassays for leucine-enkephalin and methionine-enkephalin. Norepinephrine 15-29 proenkephalin Rattus norvegicus 137-147 2408793-4 1985 Enkephalin immunoreactivity paralleled the enkephalin assay standard curves and was not abolished by boiling or by protease inhibitors (EDTA, PMSF). Edetic Acid 136-140 proenkephalin Rattus norvegicus 0-10 2408793-4 1985 Enkephalin immunoreactivity paralleled the enkephalin assay standard curves and was not abolished by boiling or by protease inhibitors (EDTA, PMSF). Phenylmethylsulfonyl Fluoride 142-146 proenkephalin Rattus norvegicus 0-10 2856940-3 1985 [D-Ala2,D-Leu5]enkephalin was the most potent opioid tested, and in the tail-flick test (long-term procedure) it was about 2 orders of magnitude more potent than dynorphin A and 7 times more potent than morphine. Morphine 203-211 proenkephalin Rattus norvegicus 15-25 3900010-0 1985 Cyanogen bromide cleavage of methionine residues as a control method for enkephalin immunocytochemistry. Methionine 29-39 proenkephalin Rattus norvegicus 73-83 3900010-2 1985 One of the antibodies (R133) recognizes both met- and leu-enkephalin whereas the other (R26) reacts with met-enkephalin only. Leucine 54-57 proenkephalin Rattus norvegicus 58-68 3900010-4 1985 R26-(met-enkephalin-like) immunoreactivity was totally abolished by cyanogen bromide pretreatment. Cyanogen Bromide 68-84 proenkephalin Rattus norvegicus 9-19 2993751-5 1985 Using this technique, we observed that some (but not all) nociceptive stimuli such as intense pinching of the muzzle, intraperitoneal injection of acetic acid or noxious heat applied to the muzzle or the tail induced a significant increase in met-enkephalin release from the spinal cord (see fig. Acetic Acid 147-158 proenkephalin Rattus norvegicus 247-257 2856940-5 1985 Low doses of naloxone (1 and 2 mg/kg s.c.) completely blocked the antinociceptive effects of morphine and [D-Ala2,D-Leu5]enkephalin, but neither low nor high (40 mg/kg s.c.) doses clearly blocked the antinociceptive effects of dynorphin A. Naloxone 13-21 proenkephalin Rattus norvegicus 121-131 2993752-4 1985 One of these compounds, kelatorphan, totally protects, in vitro and in vivo, Met-enkephalin from enzymatic degradation. kelatorphan 24-35 proenkephalin Rattus norvegicus 81-91 3885070-1 1985 The effect of postnatal administration of phenobarbital on enzymes degrading enkephalin was examined. Phenobarbital 42-55 proenkephalin Rattus norvegicus 77-87 2417173-7 1985 For SP, NT and enkephalin the motor response has been blocked by dopamine antagonists. Dopamine 65-73 proenkephalin Rattus norvegicus 15-25 2417173-9 1985 These data indicate that SP, SK, enkephalin and NT can activate dopamine neurons in the ventromedial mesencephalon. Dopamine 64-72 proenkephalin Rattus norvegicus 33-43 2864680-3 1985 The substitution of tyrosine for phenylalanine at position three resulted in a large increase in opiate receptor affinity which may be related to the known requirement for a phenolic hydroxyl moiety in the rigid opiate and enkephalin systems. Tyrosine 20-28 proenkephalin Rattus norvegicus 223-233 2864680-3 1985 The substitution of tyrosine for phenylalanine at position three resulted in a large increase in opiate receptor affinity which may be related to the known requirement for a phenolic hydroxyl moiety in the rigid opiate and enkephalin systems. Phenylalanine 33-46 proenkephalin Rattus norvegicus 223-233 2864680-3 1985 The substitution of tyrosine for phenylalanine at position three resulted in a large increase in opiate receptor affinity which may be related to the known requirement for a phenolic hydroxyl moiety in the rigid opiate and enkephalin systems. Hydroxyl Radical 183-191 proenkephalin Rattus norvegicus 223-233 2995942-0 1985 Effects of guanine nucleotides, transition metals and temperature on enkephalin receptors of rat brain membranes. Guanine Nucleotides 11-30 proenkephalin Rattus norvegicus 69-79 2995942-1 1985 The interactions among guanine nucleotides, transition metals and enkephalin (ENK) receptors were investigated by assaying the [3H]ENK binding to brain synaptic membranes. Guanine Nucleotides 23-42 proenkephalin Rattus norvegicus 78-81 2995942-1 1985 The interactions among guanine nucleotides, transition metals and enkephalin (ENK) receptors were investigated by assaying the [3H]ENK binding to brain synaptic membranes. Tritium 128-130 proenkephalin Rattus norvegicus 66-76 2995942-1 1985 The interactions among guanine nucleotides, transition metals and enkephalin (ENK) receptors were investigated by assaying the [3H]ENK binding to brain synaptic membranes. Tritium 128-130 proenkephalin Rattus norvegicus 78-81 2995942-2 1985 In the presence of 100 mM NaCl, GTP and Gpp(NH)p reduced the binding of [3H]ENK at 0 degree C and 25 degrees C, reflecting a decrease mainly in the affinity of the binding sites. Sodium Chloride 26-30 proenkephalin Rattus norvegicus 76-79 2995942-2 1985 In the presence of 100 mM NaCl, GTP and Gpp(NH)p reduced the binding of [3H]ENK at 0 degree C and 25 degrees C, reflecting a decrease mainly in the affinity of the binding sites. Guanosine Triphosphate 32-35 proenkephalin Rattus norvegicus 76-79 2995942-2 1985 In the presence of 100 mM NaCl, GTP and Gpp(NH)p reduced the binding of [3H]ENK at 0 degree C and 25 degrees C, reflecting a decrease mainly in the affinity of the binding sites. Guanylyl Imidodiphosphate 40-48 proenkephalin Rattus norvegicus 76-79 2995942-2 1985 In the presence of 100 mM NaCl, GTP and Gpp(NH)p reduced the binding of [3H]ENK at 0 degree C and 25 degrees C, reflecting a decrease mainly in the affinity of the binding sites. Tritium 73-75 proenkephalin Rattus norvegicus 76-79 3975260-1 1985 Increased concentrations of immunoreactive methionine-enkephalin but not leucine-enkephalin were measured in fractions of cerebrospinal fluid perfusate collected from ventricular-cisternally perfused, urethane-anesthetized rats exposed to a mixture of 75% nitrous oxide/25% oxygen for 60 min. Methionine 43-53 proenkephalin Rattus norvegicus 54-64 3975260-2 1985 These findings suggest that nitrous oxide might be capable of inducing the release of methionine-enkephalin in the central nervous system. Nitrous Oxide 28-41 proenkephalin Rattus norvegicus 97-107 2864680-1 1985 The somatostatin analogs D-Phe-Cys-D-Trp-Lys-Thr-Cys-Thr and the corresponding penicillamine compounds have been prepared and tested for their ability to displace [3H]naloxone and [3H] [D-Ala2, D-Leu5]enkephalin from rat brain receptors. D-Phe-Cys-D-Trp-Lys-Thr-Cys-Thr 25-56 proenkephalin Rattus norvegicus 201-211 2864680-1 1985 The somatostatin analogs D-Phe-Cys-D-Trp-Lys-Thr-Cys-Thr and the corresponding penicillamine compounds have been prepared and tested for their ability to displace [3H]naloxone and [3H] [D-Ala2, D-Leu5]enkephalin from rat brain receptors. Penicillamine 79-92 proenkephalin Rattus norvegicus 201-211 2864680-1 1985 The somatostatin analogs D-Phe-Cys-D-Trp-Lys-Thr-Cys-Thr and the corresponding penicillamine compounds have been prepared and tested for their ability to displace [3H]naloxone and [3H] [D-Ala2, D-Leu5]enkephalin from rat brain receptors. Tritium 164-166 proenkephalin Rattus norvegicus 201-211 2995942-3 1985 In the absence of sodium, however, guanine nucleotides only slightly lowered the ENK binding at 25 degrees C, and at 0 degree C they strongly increased the ENK binding dose-dependently. Guanine Nucleotides 35-54 proenkephalin Rattus norvegicus 81-84 2995942-3 1985 In the absence of sodium, however, guanine nucleotides only slightly lowered the ENK binding at 25 degrees C, and at 0 degree C they strongly increased the ENK binding dose-dependently. Guanine Nucleotides 35-54 proenkephalin Rattus norvegicus 156-159 2995942-5 1985 In micromolar concentrations, zinc and cupric ions inhibited the ENK binding to opioid receptors by respectively reducing the affinity and the number of binding sites. cupric 39-45 proenkephalin Rattus norvegicus 65-68 2995942-7 1985 The results suggest complex interactions of transition metals and guanine nucleotides with ENK binding sites. Guanine Nucleotides 66-85 proenkephalin Rattus norvegicus 91-94 2995943-3 1985 In contrast, specific binding of the delta ligand [3H]D-Ala2,D-Leu5-enkephalin was virtually totally eliminated as a result of formaldehyde perfusion. Tritium 51-53 proenkephalin Rattus norvegicus 68-78 2995943-3 1985 In contrast, specific binding of the delta ligand [3H]D-Ala2,D-Leu5-enkephalin was virtually totally eliminated as a result of formaldehyde perfusion. Formaldehyde 127-139 proenkephalin Rattus norvegicus 68-78 3917569-1 1985 A Met5-enkephalin analog, FK33-824 (5, 10 and 20 micrograms/100 g body wt, iv) caused a dose-related increase in plasma growth hormone (GH) in urethane-anesthetized male rats. Urethane 143-151 proenkephalin Rattus norvegicus 7-17 3885070-6 1985 The treatment of the rats with phenobarbital resulted in a significant inhibition of enkephalinase A when measured in vitro, using methionine enkephalin as substrate. Phenobarbital 31-44 proenkephalin Rattus norvegicus 85-95 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. Leucine 104-107 proenkephalin Rattus norvegicus 27-40 3937614-0 1985 [Investigations on the relationship between methionine-enkephalin (Met-Enk) and acetylcholine (ACh) in brain of rats, with their influence on the effect of electroacupuncture analgesia]. Acetylcholine 80-93 proenkephalin Rattus norvegicus 71-74 3937614-0 1985 [Investigations on the relationship between methionine-enkephalin (Met-Enk) and acetylcholine (ACh) in brain of rats, with their influence on the effect of electroacupuncture analgesia]. Acetylcholine 95-98 proenkephalin Rattus norvegicus 71-74 6595672-5 1984 On HPLC, the putative proenkephalin was eluted at a much higher propanol concentration than the 18.2-kDa enkephalin-containing peptide isolated previously. 1-Propanol 64-72 proenkephalin Rattus norvegicus 22-35 6099338-3 1984 HPLC at pH 3.0 resolved 125I[D-Ala2, Met5] enkephalin into two fractions, which ran as a single spot in thin-layer chromatography with the same Rf values. [d-ala2, met5 28-41 proenkephalin Rattus norvegicus 43-53 6595672-5 1984 On HPLC, the putative proenkephalin was eluted at a much higher propanol concentration than the 18.2-kDa enkephalin-containing peptide isolated previously. 1-Propanol 64-72 proenkephalin Rattus norvegicus 25-35 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. Leucine 104-107 proenkephalin Rattus norvegicus 30-40 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. arg6-phe7 136-145 proenkephalin Rattus norvegicus 27-40 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. arg6-phe7 136-145 proenkephalin Rattus norvegicus 30-40 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. arg6-gly7 167-176 proenkephalin Rattus norvegicus 27-40 6595672-6 1984 Treatment of this putative proenkephalin with endoproteinase Lys-C showed it contain [Met]-enkephalin, [Leu]enkephalin, [Met]enkephalin-Arg6-Phe7, and [Met]enkephalin-Arg6-Gly7-Leu8 in the same ratios as are found in proenkephalin as deduced from sequencing of proenkephalin cDNA. arg6-gly7 167-176 proenkephalin Rattus norvegicus 30-40 6095896-1 1984 The enkephalin affinity reagent [3H]Tyr-D-Ala-Gly-Phe-Leu-CH2Cl [( 3H]DALECK) was synthesized. Tritium 33-35 proenkephalin Rattus norvegicus 4-14 6518374-3 1984 Three enkephalin-immunoreactive HPLC fractions inhibited the binding of labeled naloxone to rat brain membranes. Naloxone 80-88 proenkephalin Rattus norvegicus 6-16 6095896-1 1984 The enkephalin affinity reagent [3H]Tyr-D-Ala-Gly-Phe-Leu-CH2Cl [( 3H]DALECK) was synthesized. tyr-d-ala-gly-phe-leu-ch2cl 36-63 proenkephalin Rattus norvegicus 4-14 6095896-1 1984 The enkephalin affinity reagent [3H]Tyr-D-Ala-Gly-Phe-Leu-CH2Cl [( 3H]DALECK) was synthesized. Tritium 67-69 proenkephalin Rattus norvegicus 4-14 6092610-15 1984 Bladder activity was consistently inhibited by [D-Ala2,MePhe4,Gly-(ol)5] enkephalin (mu agonist) and [D-Ala2-D-Leu5]enkephalin (delta agonist) but was unaffected by U-50, 488H i.t., (kappa agonist). u-50 165-169 proenkephalin Rattus norvegicus 116-126 6092610-15 1984 Bladder activity was consistently inhibited by [D-Ala2,MePhe4,Gly-(ol)5] enkephalin (mu agonist) and [D-Ala2-D-Leu5]enkephalin (delta agonist) but was unaffected by U-50, 488H i.t., (kappa agonist). 488h 171-175 proenkephalin Rattus norvegicus 116-126 6094742-8 1984 The effect of low pH on sodium fluoride-stimulated and D-Ala enk-inhibited adenylate cyclase could be reversed by addition of either cis-vaccenic acid or phosphatidylcholine to treated membranes, but the effect on GTP regulation of binding was not reversed by lipid incorporation. cis-vaccenic acid 133-150 proenkephalin Rattus norvegicus 61-64 6094742-8 1984 The effect of low pH on sodium fluoride-stimulated and D-Ala enk-inhibited adenylate cyclase could be reversed by addition of either cis-vaccenic acid or phosphatidylcholine to treated membranes, but the effect on GTP regulation of binding was not reversed by lipid incorporation. Phosphatidylcholines 154-173 proenkephalin Rattus norvegicus 61-64 6094742-8 1984 The effect of low pH on sodium fluoride-stimulated and D-Ala enk-inhibited adenylate cyclase could be reversed by addition of either cis-vaccenic acid or phosphatidylcholine to treated membranes, but the effect on GTP regulation of binding was not reversed by lipid incorporation. Guanosine Triphosphate 214-217 proenkephalin Rattus norvegicus 61-64 6092897-2 1984 Prior administration of either morphine or D-Ala2-D-Leu5-enkephalin to the homogenates inhibits in a concentration-dependent manner the specific binding of [3H]naloxonazine. Tritium 157-159 proenkephalin Rattus norvegicus 57-67 6149459-2 1984 Enkephalins and the stable analog [D-Ala2,D-Leu5]enkephalin, which are virtually inactive at kappa-sites, possess moderate binding affinity at benzomorphan sites. Benzomorphans 143-155 proenkephalin Rattus norvegicus 49-59 6092897-2 1984 Prior administration of either morphine or D-Ala2-D-Leu5-enkephalin to the homogenates inhibits in a concentration-dependent manner the specific binding of [3H]naloxonazine. naloxonazine 160-172 proenkephalin Rattus norvegicus 57-67 6092897-3 1984 Most important, all the binding competed by unlabeled naloxonazine at 1 microM is also competed by morphine and D-Ala2-D-Leu5-enkephalin. naloxonazine 54-66 proenkephalin Rattus norvegicus 126-136 6092898-6 1984 The irreversible antagonist beta-funaltrexamine (beta-FNA) was used to estimate the dissociation equilibrium constants; these ranged from 9-16 microM for normorphine and [Met5]enkephalin and was about 2 microM for [D-Ala2,D-Leu5]enkephalin. beta-funaltrexamine 28-47 proenkephalin Rattus norvegicus 229-239 6092898-6 1984 The irreversible antagonist beta-funaltrexamine (beta-FNA) was used to estimate the dissociation equilibrium constants; these ranged from 9-16 microM for normorphine and [Met5]enkephalin and was about 2 microM for [D-Ala2,D-Leu5]enkephalin. beta-funaltrexamine 49-57 proenkephalin Rattus norvegicus 176-186 6092898-6 1984 The irreversible antagonist beta-funaltrexamine (beta-FNA) was used to estimate the dissociation equilibrium constants; these ranged from 9-16 microM for normorphine and [Met5]enkephalin and was about 2 microM for [D-Ala2,D-Leu5]enkephalin. beta-funaltrexamine 49-57 proenkephalin Rattus norvegicus 229-239 6514149-0 1984 Enkephalin content in rat striatum during prolonged treatment with fluphenazine. Fluphenazine 67-79 proenkephalin Rattus norvegicus 0-10 6092898-7 1984 beta-FNA also blocked the hyperpolarization caused by [D-Ala2,D-Leu5]enkephalin, ethylketacyclazocine, and [D-Ser2,D-Leu5] enkephalin-Thr. beta-funaltrexamine 0-8 proenkephalin Rattus norvegicus 69-79 6514149-4 1984 Apomorphine, but not naloxone, prevented elevation of enkephalin levels after a one month FLU administration. Apomorphine 0-11 proenkephalin Rattus norvegicus 54-64 6092898-7 1984 beta-FNA also blocked the hyperpolarization caused by [D-Ala2,D-Leu5]enkephalin, ethylketacyclazocine, and [D-Ser2,D-Leu5] enkephalin-Thr. beta-funaltrexamine 0-8 proenkephalin Rattus norvegicus 123-133 6092898-8 1984 Naloxone reversibly antagonized the hyperpolarizations caused by normorphine and [D-Ala2,D-Leu5]enkephalin, with a dissociation equilibrium constant of 2 nM. Naloxone 0-8 proenkephalin Rattus norvegicus 96-106 6096731-1 1984 The rats subjected to repetitive electroconvulsive treatment (ECT; 8 electroshocks within 9 days) the density of specific 3H-D-Ala2, D-Leu5-enkephalin (3H-DADLE) binding sites in the cortical membranes was enhanced by approx. 3h-dadle 152-160 proenkephalin Rattus norvegicus 140-150 6593732-4 1984 [Leu]Enk concentrations exceed those of [Met]Enk-Arg-Gly-Leu in certain brain areas such as the substantia nigra, dentate gyrus, globus pallidus, and median eminence (areas rich in dynorphin-related peptides). Leucine 1-4 proenkephalin Rattus norvegicus 5-8 6092561-3 1984 A portion of [3H]-beta-endorphin binding is sensitive to low concentrations of morphine or D-Ala2-Leu5-enkephalin (less than 5 nM). Tritium 14-16 proenkephalin Rattus norvegicus 103-113 6593732-4 1984 [Leu]Enk concentrations exceed those of [Met]Enk-Arg-Gly-Leu in certain brain areas such as the substantia nigra, dentate gyrus, globus pallidus, and median eminence (areas rich in dynorphin-related peptides). Arginine 49-52 proenkephalin Rattus norvegicus 45-48 6593732-6 1984 In certain brain regions [Leu]Enk may derive from two separate precursors (prodynorphin and proenkephalin) in two distinct neuronal systems. Leucine 26-29 proenkephalin Rattus norvegicus 30-33 6593732-6 1984 In certain brain regions [Leu]Enk may derive from two separate precursors (prodynorphin and proenkephalin) in two distinct neuronal systems. Leucine 26-29 proenkephalin Rattus norvegicus 92-105 6395044-1 1984 The distribution of Met5-enkephalin-Arg6-Phe7 (Met-Enk-Arg-Phe)-like immunoreactivity in the rat gastrointestinal tract was studied by immunohistochemical techniques. Arginine 36-39 proenkephalin Rattus norvegicus 25-35 6395044-1 1984 The distribution of Met5-enkephalin-Arg6-Phe7 (Met-Enk-Arg-Phe)-like immunoreactivity in the rat gastrointestinal tract was studied by immunohistochemical techniques. Arginine 36-39 proenkephalin Rattus norvegicus 51-54 6395044-1 1984 The distribution of Met5-enkephalin-Arg6-Phe7 (Met-Enk-Arg-Phe)-like immunoreactivity in the rat gastrointestinal tract was studied by immunohistochemical techniques. Phenylalanine 41-44 proenkephalin Rattus norvegicus 51-54 6395044-2 1984 Antiserum against a Met-Enk-Arg-Phe-thyroglobulin conjugate was raised in rabbits and was found to be specific for synthetic Met-Enk-Arg-Phe. Arginine 28-31 proenkephalin Rattus norvegicus 24-27 6395044-2 1984 Antiserum against a Met-Enk-Arg-Phe-thyroglobulin conjugate was raised in rabbits and was found to be specific for synthetic Met-Enk-Arg-Phe. Arginine 28-31 proenkephalin Rattus norvegicus 129-132 6395044-2 1984 Antiserum against a Met-Enk-Arg-Phe-thyroglobulin conjugate was raised in rabbits and was found to be specific for synthetic Met-Enk-Arg-Phe. Phenylalanine 32-35 proenkephalin Rattus norvegicus 24-27 6395044-2 1984 Antiserum against a Met-Enk-Arg-Phe-thyroglobulin conjugate was raised in rabbits and was found to be specific for synthetic Met-Enk-Arg-Phe. Phenylalanine 32-35 proenkephalin Rattus norvegicus 129-132 6395044-3 1984 Met-Enk-Arg-Phe-like immunoreactivity was found in neuronal structures in all parts of the rat gastrointestinal tract. Arginine 8-11 proenkephalin Rattus norvegicus 4-7 6395044-3 1984 Met-Enk-Arg-Phe-like immunoreactivity was found in neuronal structures in all parts of the rat gastrointestinal tract. Phenylalanine 12-15 proenkephalin Rattus norvegicus 4-7 6096283-8 1984 However, introduction of the sulfur atom in position 2 of Leu-Enk increased the potency of the compound in all assays, the MVD assay being the most sensitive. Sulfur 29-35 proenkephalin Rattus norvegicus 62-65 6096283-8 1984 However, introduction of the sulfur atom in position 2 of Leu-Enk increased the potency of the compound in all assays, the MVD assay being the most sensitive. Leucine 58-61 proenkephalin Rattus norvegicus 62-65 6386102-0 1984 Enkephalin-like immunoreactivity in rat area postrema: ultrastructural localization and coexistence with serotonin. Serotonin 105-114 proenkephalin Rattus norvegicus 0-10 6386102-1 1984 The ultrastructure of enkephalin-containing neurons and their capacity to take-up [3H]serotonin were examined in the area postrema. Serotonin 86-95 proenkephalin Rattus norvegicus 22-32 6386102-11 1984 We conclude that neurons containing ELI are primarily, but not exclusively, associated with other intrinsic neurons or afferents in the rat area postrema and that some of the enkephalin-labeled terminals have the capacity to take-up serotonin. Serotonin 233-242 proenkephalin Rattus norvegicus 175-185 6489447-0 1984 [Leu5]enkephalin inhibits norepinephrine-induced contraction of rat aorta. Norepinephrine 26-40 proenkephalin Rattus norvegicus 6-16 6489447-1 1984 Leucine-enkephalin produces a dose related decrease in the contractile response of spirally cut strips of rat aorta to norepinephrine (NE). Norepinephrine 119-133 proenkephalin Rattus norvegicus 8-18 6489447-2 1984 The maximal effect (55.0 +/- 1.0 percent reduction in developed tension) occurs at a leucine-enkephalin concentration of 10(-10) M. The attenuation of contractile response is reversed by naloxone. Naloxone 187-195 proenkephalin Rattus norvegicus 93-103 6436816-1 1984 Enkephalin convertase, an enkephalin-forming carboxypeptidase, is potently inhibited by guanidinoethylmercaptosuccinic acid (GEMSA). guanidinoethylmercaptosuccinic acid 88-123 proenkephalin Rattus norvegicus 26-36 6151154-4 1984 GABAergic and opiate agonists, muscimol and enkephalin respectively, decreased neocortical SDHACU. sdhacu 91-97 proenkephalin Rattus norvegicus 44-54 6093016-1 1984 The distribution of opioid receptors in the stomach has been studied using autoradiography of slide-mounted tissue sections incubated with [3H]D-Ala2,D-Leu5-enkephalin. Tritium 140-142 proenkephalin Rattus norvegicus 157-167 6148016-4 1984 A nervous mechanism involving acetylcholine was further suggested by the inhibitory action of methionine-enkephalin on gastrin release after vagal section. Acetylcholine 30-43 proenkephalin Rattus norvegicus 105-115 6092561-6 1984 The portion of [3H]-beta-endorphin binding that is inhibited under these conditions appears to be equally sensitive to both morphine and the enkephalin and may correspond to mu1 sites. Tritium 16-18 proenkephalin Rattus norvegicus 141-151 6504723-1 1984 Enkephalin-like immunoreactivity was demonstrated in a group of highly reactive neurons (HRN) of the rat hypothalamus by the biotin-avidin immunohistochemical technique. Biotin 125-131 proenkephalin Rattus norvegicus 0-10 6088761-4 1984 The GTP effect on D-[3H]Ala2-Met5-enkephalinamide (D-Ala-enk) binding was less sensitive to NEM than the binding itself. Guanosine Triphosphate 4-7 proenkephalin Rattus norvegicus 34-37 6088761-5 1984 Incubation of membranes with 0.2 microM D-Ala-enk before addition of NEM significantly protected D-[3H]Ala-enk binding, but did not protect the GTP effect, actually increasing the effect of NEM and eliminating the GTP effect. Alanine 41-45 proenkephalin Rattus norvegicus 46-49 6088761-5 1984 Incubation of membranes with 0.2 microM D-Ala-enk before addition of NEM significantly protected D-[3H]Ala-enk binding, but did not protect the GTP effect, actually increasing the effect of NEM and eliminating the GTP effect. Alanine 41-45 proenkephalin Rattus norvegicus 107-110 6088761-5 1984 Incubation of membranes with 0.2 microM D-Ala-enk before addition of NEM significantly protected D-[3H]Ala-enk binding, but did not protect the GTP effect, actually increasing the effect of NEM and eliminating the GTP effect. d-[3h]ala 97-106 proenkephalin Rattus norvegicus 46-49 6088761-5 1984 Incubation of membranes with 0.2 microM D-Ala-enk before addition of NEM significantly protected D-[3H]Ala-enk binding, but did not protect the GTP effect, actually increasing the effect of NEM and eliminating the GTP effect. d-[3h]ala 97-106 proenkephalin Rattus norvegicus 107-110 6088761-5 1984 Incubation of membranes with 0.2 microM D-Ala-enk before addition of NEM significantly protected D-[3H]Ala-enk binding, but did not protect the GTP effect, actually increasing the effect of NEM and eliminating the GTP effect. Guanosine Triphosphate 214-217 proenkephalin Rattus norvegicus 46-49 6088761-8 1984 Preincubation of membranes either with NaCl alone or with NaCl plus D-Ala-enk protected both the GTP effect and the binding site. Guanosine Triphosphate 97-100 proenkephalin Rattus norvegicus 74-77 6466857-2 1984 The evaluation of the degree of the stress and antistressor properties of a hexapeptide arginine-containing analog of leu-enkephalin was performed according to the changes in the weight of the thymus, spleen, adrenals, and appearance of ulceration in the gastric mucosa. Arginine 88-96 proenkephalin Rattus norvegicus 122-132 6088932-6 1984 The pure steroisomer [(R)-3-(N-hydroxy)carboxamido-2-benzylpropanoyl]-L-alanine designated kelatorphan, exhibits also a relatively good inhibitory potency against aminopeptidases (IC50 approximately 10 microM) and can be considered as the first virtually complete inhibitor of enkephalin metabolism. (r)-3-(n-hydroxy)carboxamido-2-benzylpropanoyl]-l-alanine 22-79 proenkephalin Rattus norvegicus 277-287 6088932-6 1984 The pure steroisomer [(R)-3-(N-hydroxy)carboxamido-2-benzylpropanoyl]-L-alanine designated kelatorphan, exhibits also a relatively good inhibitory potency against aminopeptidases (IC50 approximately 10 microM) and can be considered as the first virtually complete inhibitor of enkephalin metabolism. kelatorphan 91-102 proenkephalin Rattus norvegicus 277-287 6147175-2 1984 For comparison purposes, alternate sections of the same brains were processed for the localization of methionine enkephalin-like immunoreactivity (ELI). Methionine 102-112 proenkephalin Rattus norvegicus 113-123 6589644-1 1984 In rats the antinociceptive actions of morphine (injected intraventricularly) or of [Met5]enkephalin-Arg6-Phe7 (YGGFMRF) (injected intrathecally) were attenuated by a pretreatment with 10 microliter of artificial cerebral spinal fluid containing 1 microM captopril/1 microM bestatin/2.5 microM Phe-Met-Arg-Phe-NH2 (FMRF-NH2) given 5 min earlier by the same route. arg6-phe7 101-110 proenkephalin Rattus norvegicus 90-100 6589644-1 1984 In rats the antinociceptive actions of morphine (injected intraventricularly) or of [Met5]enkephalin-Arg6-Phe7 (YGGFMRF) (injected intrathecally) were attenuated by a pretreatment with 10 microliter of artificial cerebral spinal fluid containing 1 microM captopril/1 microM bestatin/2.5 microM Phe-Met-Arg-Phe-NH2 (FMRF-NH2) given 5 min earlier by the same route. Captopril 255-264 proenkephalin Rattus norvegicus 90-100 6589644-1 1984 In rats the antinociceptive actions of morphine (injected intraventricularly) or of [Met5]enkephalin-Arg6-Phe7 (YGGFMRF) (injected intrathecally) were attenuated by a pretreatment with 10 microliter of artificial cerebral spinal fluid containing 1 microM captopril/1 microM bestatin/2.5 microM Phe-Met-Arg-Phe-NH2 (FMRF-NH2) given 5 min earlier by the same route. ubenimex 274-282 proenkephalin Rattus norvegicus 90-100 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. lanthanum(3+) 41-45 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. nd3+ 47-51 proenkephalin Rattus norvegicus 113-123 6466818-2 1984 Intraperitoneal injection of a synthetic enkephalin analog D-ala2-leu5-arg6-enkephalin in a dose of 1.25 nmol/kg bw resulted in partial normalization of diuresis, reduction in antidiuretic activity of blood plasma and blood aldosterone level to the control values. Aldosterone 224-235 proenkephalin Rattus norvegicus 41-51 6089917-4 1984 The experimental results suggest that morphine and D-Ala2, D-Leu5-enkephalin binding both to the high affinity and low affinity sites has different nature and point to the utility of stable and standard preparations of lyophilized membranes for the use in the receptor analysis of opiate and opioid peptides. d-leu5 59-65 proenkephalin Rattus norvegicus 66-76 6093821-0 1984 [The effect of di- and trivalent metal ions on the binding of [3H-Tyr1, D-Ala2, D-Leu5] enkephalin to opiate receptors from the rat brain]. Metals 33-38 proenkephalin Rattus norvegicus 88-98 6466818-2 1984 Intraperitoneal injection of a synthetic enkephalin analog D-ala2-leu5-arg6-enkephalin in a dose of 1.25 nmol/kg bw resulted in partial normalization of diuresis, reduction in antidiuretic activity of blood plasma and blood aldosterone level to the control values. Aldosterone 224-235 proenkephalin Rattus norvegicus 76-86 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. sm3+ 53-57 proenkephalin Rattus norvegicus 113-123 6093821-0 1984 [The effect of di- and trivalent metal ions on the binding of [3H-Tyr1, D-Ala2, D-Leu5] enkephalin to opiate receptors from the rat brain]. 3h-tyr1 63-70 proenkephalin Rattus norvegicus 88-98 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. eu3+ 59-63 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. magnesium ion 23-27 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. Manganese(2+) 29-33 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. ganglioside, GD3 69-73 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. strontium cation 35-39 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. 3h-tyr1 135-142 proenkephalin Rattus norvegicus 113-123 6093821-1 1984 The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated. d-leu5 152-158 proenkephalin Rattus norvegicus 113-123 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. Metals 54-59 proenkephalin Rattus norvegicus 101-111 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. Metals 54-59 proenkephalin Rattus norvegicus 185-195 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. 3h-tyr1 76-83 proenkephalin Rattus norvegicus 101-111 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. 3h-tyr1 76-83 proenkephalin Rattus norvegicus 185-195 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. d-leu3 93-99 proenkephalin Rattus norvegicus 101-111 6093821-7 1984 It is shown that the effect of both di- and trivalent metal cations on the [3H-Tyr1, D-Ala2, D-Leu3] enkephalin binding is mediated through one cation attachment site on the respective enkephalin receptor. d-leu3 93-99 proenkephalin Rattus norvegicus 185-195 6327910-6 1984 When [3H]D-ala2-D-leu5-enkephalin was used as ligand, microsomes possessed 60% fewer high-affinity sites than did synaptic membranes, and a large number of low-affinity sites. Tritium 6-8 proenkephalin Rattus norvegicus 23-33 6204421-2 1984 A single injection (25 to 75 mg/kg, ip) or repeated injections (2.5 to 10 mg/kg/day for 10 days, ip) of chlordecone caused a time- and dose-related decrease in pituitary [Met5]-enkephalin-like immunoreactivity (ME-LI) in adult rats. Chlordecone 104-115 proenkephalin Rattus norvegicus 177-187 6329455-6 1984 Since functional activity and 2-DG uptake are correlated, we suggest that the subiculum and/or CA1 area, are probably the brain regions most involved in the enkephalin-induced epileptic phenomena. Deoxyglucose 30-34 proenkephalin Rattus norvegicus 157-167 6468694-5 1984 The effects of the dophaminomimetics were suppressed by administration of haloperidol (10 micrograms) and naloxon (0.8 micrograms) into the same area of the caudate nucleus which attested a functional interrelationship between the dophamine- and enkephalin-containing systems of the neostriatum in regulation of feeding behaviour. Haloperidol 74-85 proenkephalin Rattus norvegicus 246-256 6327967-11 1984 Compounds which showed a preference for the mu receptor [( D-Ala2, N-methyl-Phe4, Gly5 -ol]enkephalin and morphine/normorphine) were the most potent agonists at producing thermal analgesia and inhibition of small intestinal transit, whereas nonselective compounds (beta-endorphin and [D-Ala2, Met5]enkephalinamide) were slightly less potent in these assays. gly5 -ol 82-90 proenkephalin Rattus norvegicus 91-101 6328530-8 1984 Receptor density changes are paralleled by increases in methionine-enkephalin content in the striatum, nucleus accumbens, periaqueductal gray, and hypothalamic areas of chronic naltrexone-treated rats relative to control rats. Methionine 56-66 proenkephalin Rattus norvegicus 67-77 6328530-8 1984 Receptor density changes are paralleled by increases in methionine-enkephalin content in the striatum, nucleus accumbens, periaqueductal gray, and hypothalamic areas of chronic naltrexone-treated rats relative to control rats. Naltrexone 177-187 proenkephalin Rattus norvegicus 67-77 6468694-5 1984 The effects of the dophaminomimetics were suppressed by administration of haloperidol (10 micrograms) and naloxon (0.8 micrograms) into the same area of the caudate nucleus which attested a functional interrelationship between the dophamine- and enkephalin-containing systems of the neostriatum in regulation of feeding behaviour. Naloxone 106-113 proenkephalin Rattus norvegicus 246-256 6421996-1 1984 Enkephalin convertase, the enkephalin-synthesizing carboxypeptidase B-like enzyme, has been purified to apparent homogeneity from bovine pituitary and adrenal chromaffin granule membranes. chromaffin 159-169 proenkephalin Rattus norvegicus 27-37 6422000-4 1984 However, the opioid peptide enkephalin [D-Ala2, D-Leu5], which inhibits ganglioside GalNAc transferase activity in unsynchronized NG108-15 cultures, was much more inhibitory in whole cells 8 h after release from the cell cycle block (G1 phase) than in cells 20 h after release (G2 phase), with 50% inhibition occurring at 2 X 10(-9) M and 2 X 10(-7) M, respectively. d-leu5 48-54 proenkephalin Rattus norvegicus 28-38 6328350-3 1984 Manganese chloride significantly decreased the affinity of binding of both [3H] buprenorphine and unlabelled buprenorphine to morphine and enkephalin receptors. manganese chloride 0-18 proenkephalin Rattus norvegicus 139-149 6716285-4 1984 The enkephalin analogue, (D-ala2-met5)-enkephalinamide (DALA) reversibly reduced both the GABA-i.p.s.p. gamma-Aminobutyric Acid 90-94 proenkephalin Rattus norvegicus 4-14 6368796-0 1984 Increase of striatal Met5-enkephalin-Arg6-Phe7 (YGGFMRF) content elicited by long-term treatment with haloperidol. arg6-phe7 37-46 proenkephalin Rattus norvegicus 26-36 6368796-0 1984 Increase of striatal Met5-enkephalin-Arg6-Phe7 (YGGFMRF) content elicited by long-term treatment with haloperidol. Haloperidol 102-113 proenkephalin Rattus norvegicus 26-36 6368796-1 1984 In rats, daily doses of haloperidol repeated for various time periods increase striatal Met5-enkephalin-Arg6-Phe7 (YGGFMRF) immunoreactivity in a time- and dose-dependent manner. Haloperidol 24-35 proenkephalin Rattus norvegicus 93-103 6368796-6 1984 The similarities between the accumulation rate of immunoreactive YGGFMRF and of Met5-enkephalin induced by haloperidol suggest that haloperidol increases the biosynthesis of the specific messenger RNA for preproenkephalin, an opioid peptide precursor, which contains one copy of YGGFMRF and several copies of Met5-enkephalin. Haloperidol 107-118 proenkephalin Rattus norvegicus 85-95 6368796-6 1984 The similarities between the accumulation rate of immunoreactive YGGFMRF and of Met5-enkephalin induced by haloperidol suggest that haloperidol increases the biosynthesis of the specific messenger RNA for preproenkephalin, an opioid peptide precursor, which contains one copy of YGGFMRF and several copies of Met5-enkephalin. Haloperidol 107-118 proenkephalin Rattus norvegicus 211-221 6368796-6 1984 The similarities between the accumulation rate of immunoreactive YGGFMRF and of Met5-enkephalin induced by haloperidol suggest that haloperidol increases the biosynthesis of the specific messenger RNA for preproenkephalin, an opioid peptide precursor, which contains one copy of YGGFMRF and several copies of Met5-enkephalin. Haloperidol 132-143 proenkephalin Rattus norvegicus 85-95 6368796-6 1984 The similarities between the accumulation rate of immunoreactive YGGFMRF and of Met5-enkephalin induced by haloperidol suggest that haloperidol increases the biosynthesis of the specific messenger RNA for preproenkephalin, an opioid peptide precursor, which contains one copy of YGGFMRF and several copies of Met5-enkephalin. Haloperidol 132-143 proenkephalin Rattus norvegicus 211-221 6710516-1 1984 The effect of administration of lead in the maternal drinking water from conception to weaning on enkephalin levels in the developing rat striatum was studied between 10 and 100 days after birth. Water 62-67 proenkephalin Rattus norvegicus 98-108 6328350-3 1984 Manganese chloride significantly decreased the affinity of binding of both [3H] buprenorphine and unlabelled buprenorphine to morphine and enkephalin receptors. [3h] buprenorphine 75-93 proenkephalin Rattus norvegicus 139-149 6328350-3 1984 Manganese chloride significantly decreased the affinity of binding of both [3H] buprenorphine and unlabelled buprenorphine to morphine and enkephalin receptors. Buprenorphine 80-93 proenkephalin Rattus norvegicus 139-149 6328585-2 1984 Two days following unilateral removal of the cerebral cortex, the brains were fixed by aortic arch perfusion, then sectioned and processed for the immunocytochemical localization of an antiserum directed against methionine (Met5)-enkephalin. Methionine 212-222 proenkephalin Rattus norvegicus 230-240 6328350-6 1984 Control studies indicated similar apparent affinities of buprenorphine for morphine (Ki = 0.30 nM) and enkephalin (Ki = 0.31 nM) sites, and lower affinity for benzomorphan sites (Ki = 4.16 nM). Buprenorphine 57-70 proenkephalin Rattus norvegicus 103-113 6717804-6 1984 The overlapping distribution patterns of iron and gamma-aminobutyric acid, enkephalin, and luteinizing hormone-releasing hormone suggest that the distribution of iron is related to its association with the metabolism of one or more neurotransmitters or neuroactive compounds. Iron 162-166 proenkephalin Rattus norvegicus 75-85 6441508-6 1984 Monoamine-enkephalin colocalisation has been shown in peripheral neurones and adrenal medulla. monoamine 0-9 proenkephalin Rattus norvegicus 10-20 6697225-0 1984 Dopamine enhances Met-enkephalin efflux from rat striatal slices. Dopamine 0-8 proenkephalin Rattus norvegicus 22-32 6697225-1 1984 The basal release of Met-enkephalin immunoreactive material (ME-IR) from rat striatal slices is doubled by the in vitro addition of 5 X 10(-5) M dopamine. Dopamine 145-153 proenkephalin Rattus norvegicus 25-35 6320974-2 1984 The impairment may be ascribed to the diminished enkephalin release detected in rat striatum after chronic ethanol consumption. Ethanol 107-114 proenkephalin Rattus norvegicus 49-59 6320974-4 1984 In fact, the Kd values of [3H]Met-enkephalin and [3H]DHM are enhanced when measured in striata of ethanol-dependent rats. Tritium 27-30 proenkephalin Rattus norvegicus 34-44 6320974-4 1984 In fact, the Kd values of [3H]Met-enkephalin and [3H]DHM are enhanced when measured in striata of ethanol-dependent rats. Tritium 27-29 proenkephalin Rattus norvegicus 34-44 6320974-4 1984 In fact, the Kd values of [3H]Met-enkephalin and [3H]DHM are enhanced when measured in striata of ethanol-dependent rats. Ethanol 98-105 proenkephalin Rattus norvegicus 34-44 6694120-3 1984 In this brain area the levels of [Met5]enkephalin-like immunoreactive material were, on the contrary, significantly higher in fenfluramine-tolerant animals than in controls. Fenfluramine 126-138 proenkephalin Rattus norvegicus 39-49 6335051-3 1984 The excess of serotonin in the brain created by means of 5-oxytryptophan fully prevented the acceleration of CRBA elaboration by enkephalin under the usual conditions. Serotonin 14-23 proenkephalin Rattus norvegicus 129-139 6335051-4 1984 Injection of enkephalin at the background of serotonin lowering and raising in the brain favoured CRBA preservation. Serotonin 45-54 proenkephalin Rattus norvegicus 13-23 6099768-0 1984 Influence of intracerebroventricular (ICV) GTP-electrolyte infusion on ICV (D-ALA2, D-LEU5) enkephalin (DADL)-induced cardiovascular effects in rats. icv) gtp 38-46 proenkephalin Rattus norvegicus 92-102 6335051-3 1984 The excess of serotonin in the brain created by means of 5-oxytryptophan fully prevented the acceleration of CRBA elaboration by enkephalin under the usual conditions. 5-oxytryptophan 57-72 proenkephalin Rattus norvegicus 129-139 6335051-4 1984 Injection of enkephalin at the background of serotonin lowering and raising in the brain favoured CRBA preservation. crba 98-102 proenkephalin Rattus norvegicus 13-23 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. Tritium 49-51 proenkephalin Rattus norvegicus 10-20 6324150-2 1984 In the standard radioreceptor assays, DHET components displaced the CNS-receptor binding of [3H]-enkephalin (ENK) and [3H]thyrotropin releasing hormone (TRH). Dihydroergotoxine 38-42 proenkephalin Rattus norvegicus 97-107 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. Tyrosine 52-60 proenkephalin Rattus norvegicus 10-20 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. Carbon-14 66-69 proenkephalin Rattus norvegicus 10-20 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. lisine 70-76 proenkephalin Rattus norvegicus 10-20 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. Water 80-85 proenkephalin Rattus norvegicus 10-20 6335051-5 1984 Under the enkephalin influence the inclusion of [3H]tyrosine and [14C]lisine in water-soluble and water-insoluble proteins of different cerebral structures lowered. Water 98-103 proenkephalin Rattus norvegicus 10-20 6324150-0 1984 Chronic dihydroergotoxine administration sets on receptors for enkephalin and thyrotropin releasing hormone in the aged-rat brain. Dihydroergotoxine 8-25 proenkephalin Rattus norvegicus 63-73 6324150-2 1984 In the standard radioreceptor assays, DHET components displaced the CNS-receptor binding of [3H]-enkephalin (ENK) and [3H]thyrotropin releasing hormone (TRH). Dihydroergotoxine 38-42 proenkephalin Rattus norvegicus 109-112 6324150-2 1984 In the standard radioreceptor assays, DHET components displaced the CNS-receptor binding of [3H]-enkephalin (ENK) and [3H]thyrotropin releasing hormone (TRH). Tritium 93-95 proenkephalin Rattus norvegicus 97-107 6324150-2 1984 In the standard radioreceptor assays, DHET components displaced the CNS-receptor binding of [3H]-enkephalin (ENK) and [3H]thyrotropin releasing hormone (TRH). Tritium 93-95 proenkephalin Rattus norvegicus 109-112 6324150-3 1984 The inhibitory effect of DHET on ENK binding was competitive, and an allosteric effect seems to be involved in the DHET inhibition of TRH binding to its receptor. Dihydroergotoxine 25-29 proenkephalin Rattus norvegicus 33-36 6324150-4 1984 Intraperitoneal injections of DHET (1 mg/kg/day) to aged rats for 14 days resulted in a significant increase of ENK and TRH binding in the cerebral cortex. Dihydroergotoxine 30-34 proenkephalin Rattus norvegicus 112-115 6324150-6 1984 The results suggest that the therapeutic efficacy of DHET is derived initially from its effects on the ENK and TRH receptors especially in the cerebral cortex, which in turn influence the function of monoaminergic neurons. Dihydroergotoxine 53-57 proenkephalin Rattus norvegicus 103-106 6462963-0 1984 The enkephalin-hydrolytic activity of cerebral and cardiac muscle tissue in Wistar rats with streptozotocin diabetes. Streptozocin 93-107 proenkephalin Rattus norvegicus 4-14 6098037-6 1984 Chronic delta 9-THC treatment resulted in an increase in POA and MBH methioine-enkephalin and beta-end LI as well as an increase in plasma beta-end LI. Dronabinol 8-19 proenkephalin Rattus norvegicus 79-89 6462963-1 1984 Enkephalin-hydrolytic activity was evaluated in cerebral and cardiac tissue of Wistar rats with experimental streptozotocin-induced diabetes by comparison of the degree of amino acid cleavage from leu-enkephalin in vitro. Streptozocin 109-123 proenkephalin Rattus norvegicus 0-10 6098037-6 1984 Chronic delta 9-THC treatment resulted in an increase in POA and MBH methioine-enkephalin and beta-end LI as well as an increase in plasma beta-end LI. methioine 69-78 proenkephalin Rattus norvegicus 79-89 6571228-0 1983 Antagonism of enkephalin action on acetylcholine release by methylxanthines: lack of a purine link. Acetylcholine 35-48 proenkephalin Rattus norvegicus 14-24 6661240-0 1983 Leucine enkephalin antagonizes norepinephrine-induced 45Ca++ accumulation in rat atria. Norepinephrine 31-45 proenkephalin Rattus norvegicus 8-18 6661240-3 1983 The effect of leu-enkephalin is reversed in the presence of 10(-7) M naloxone, NE-stimulated 45Ca++ uptake being increased to 2.17 +/- 0.15 nmol/mg tissue. Leucine 14-17 proenkephalin Rattus norvegicus 18-28 6661240-3 1983 The effect of leu-enkephalin is reversed in the presence of 10(-7) M naloxone, NE-stimulated 45Ca++ uptake being increased to 2.17 +/- 0.15 nmol/mg tissue. Naloxone 69-77 proenkephalin Rattus norvegicus 18-28 6571228-0 1983 Antagonism of enkephalin action on acetylcholine release by methylxanthines: lack of a purine link. methylxanthine 60-75 proenkephalin Rattus norvegicus 14-24 6198033-4 1983 These ir fibers were seen in the nuclei of untreated animals closely surrounding ir methionine-enkephalin and ACTH cell bodies, suggesting the presence of synaptic junctions. Methionine 84-94 proenkephalin Rattus norvegicus 95-105 6198033-5 1983 Electron microscopic examination of the arcuate nucleus stained with anti-SP serum showed synapses of ir SP fiber terminals on unlabeled neuronal cell bodies and fibers, some of which might be methionine-enkephalin and ACTH neurons. TFF2 protein, human 74-76 proenkephalin Rattus norvegicus 204-214 6355286-2 1983 Met-enk and Met-enk Arg6Phe7-like immunoreactivities were found with similar distribution in nerve cell bodies of the myenteric plexus, and in fibers that were particularly dense in the myenteric plexus and circular smooth muscle. arg6phe7 20-28 proenkephalin Rattus norvegicus 16-19 6141249-0 1983 [D-Ala2,D-Met5NH2]-enkephalin inhibits acetylcholine release from the submucosal plexus of rat colon. Acetylcholine 39-52 proenkephalin Rattus norvegicus 19-29 6139154-6 1983 The excitatory effect of phoretically administered L-glutamate as well as synaptically induced and spontaneous activity was reduced or abolished by phoretically administered GABA, glycine or the enkephalin-analogue D-Ala2-D-Leu5-enkephalin. Glutamic Acid 51-62 proenkephalin Rattus norvegicus 195-205 6139154-6 1983 The excitatory effect of phoretically administered L-glutamate as well as synaptically induced and spontaneous activity was reduced or abolished by phoretically administered GABA, glycine or the enkephalin-analogue D-Ala2-D-Leu5-enkephalin. gamma-Aminobutyric Acid 174-178 proenkephalin Rattus norvegicus 229-239 6139154-6 1983 The excitatory effect of phoretically administered L-glutamate as well as synaptically induced and spontaneous activity was reduced or abolished by phoretically administered GABA, glycine or the enkephalin-analogue D-Ala2-D-Leu5-enkephalin. Glycine 180-187 proenkephalin Rattus norvegicus 229-239 6139154-7 1983 The actions of the enkephalin analogue were blocked by phoretically applied naloxone. Naloxone 76-84 proenkephalin Rattus norvegicus 19-29 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Theophylline 0-12 proenkephalin Rattus norvegicus 87-97 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Theophylline 0-12 proenkephalin Rattus norvegicus 113-123 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Theophylline 0-4 proenkephalin Rattus norvegicus 87-97 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Theophylline 0-4 proenkephalin Rattus norvegicus 113-123 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Caffeine 24-32 proenkephalin Rattus norvegicus 87-97 6571228-1 1983 Theophylline (Theo) and caffeine antagonized the inhibitory effect of methionine (Met)-enkephalin, leucine (Leu)-enkephalin and morphine on the twitch height of the field stimulated myenteric plexus longitudinal muscle (MPLM) preparation of the guinea-pig ileum. Caffeine 24-32 proenkephalin Rattus norvegicus 113-123 6571228-3 1983 Injection of Theo (20, 40 mg kg-1) or caffeine (40 mg kg-1) reversed or blocked the inhibitory effects of Leu-enkephalin (50 micrograms i.c.v.) Theophylline 13-17 proenkephalin Rattus norvegicus 110-120 6571228-3 1983 Injection of Theo (20, 40 mg kg-1) or caffeine (40 mg kg-1) reversed or blocked the inhibitory effects of Leu-enkephalin (50 micrograms i.c.v.) Caffeine 38-46 proenkephalin Rattus norvegicus 110-120 6571228-4 1983 and a systemically active enkephalin FK 33,824 (0.5 mg kg-1) on the release of acetylcholine (ACh) from the rat cortex in vivo. fk 33 37-42 proenkephalin Rattus norvegicus 26-36 6571228-4 1983 and a systemically active enkephalin FK 33,824 (0.5 mg kg-1) on the release of acetylcholine (ACh) from the rat cortex in vivo. Acetylcholine 79-92 proenkephalin Rattus norvegicus 26-36 6571228-4 1983 and a systemically active enkephalin FK 33,824 (0.5 mg kg-1) on the release of acetylcholine (ACh) from the rat cortex in vivo. Acetylcholine 94-97 proenkephalin Rattus norvegicus 26-36 6321306-2 1983 BT showed high affinities to all types of the receptor except the alpha type (phencyclidine binding site), resulting in displacements of the bindings of mu (dihydromorphine)-, delta (D-Ala2-D-Leu5-enkephalin)- and kappa (ethylketocyclazocine)-ligands with more potency than morphine and ketocyclazocine, and it preferentially bound to mu- and kappa-opioid receptors. Phencyclidine 78-91 proenkephalin Rattus norvegicus 197-207 6640352-0 1983 Effects of neonatal testosterone administration on anterior pituitary levels of Met5-enkephalin in adult rats. Testosterone 20-32 proenkephalin Rattus norvegicus 85-95 6640352-1 1983 Neonatal injection of testosterone to male rats significantly increased the anterior pituitary level of Met5-enkephalin-like immunoreactivity (ME-LI) in adulthood. Testosterone 22-34 proenkephalin Rattus norvegicus 109-119 6358277-2 1983 The higher ranges of colchicine pretreatment allowed the visualization of extensive enkephalin-containing systems in these brain regions, some of which are reported for the first time. Colchicine 21-31 proenkephalin Rattus norvegicus 84-94 6355286-4 1983 In rat and mouse, the antiserum to Met-enk Arg6Phe7, but not those to Met-enk or Met-enk Arg6, also stained numerous endocrine-like cells of the antral mucosa. arg6phe7 43-51 proenkephalin Rattus norvegicus 39-42 6324140-1 1983 Opiate binding sites in five brain regions were labeled with the mu and delta markers, 3H-morphine and 3H-[D-Ala2,D-leu5]enkephalin, respectively. Opiate Alkaloids 0-6 proenkephalin Rattus norvegicus 121-131 6311513-0 1983 The enkephalin system in the rat anterior pituitary: regulation by gonadal steroid hormones and psychotropic drugs. Steroids 75-91 proenkephalin Rattus norvegicus 4-14 6138350-1 1983 The high affinity, sodium-dependent uptake of proline by rat brain synaptosomes was inhibited by the opioid pentapeptides, Leu-enkephalin and Met-enkephalin. Sodium 19-25 proenkephalin Rattus norvegicus 127-137 6138350-1 1983 The high affinity, sodium-dependent uptake of proline by rat brain synaptosomes was inhibited by the opioid pentapeptides, Leu-enkephalin and Met-enkephalin. Sodium 19-25 proenkephalin Rattus norvegicus 146-156 6138350-1 1983 The high affinity, sodium-dependent uptake of proline by rat brain synaptosomes was inhibited by the opioid pentapeptides, Leu-enkephalin and Met-enkephalin. Proline 46-53 proenkephalin Rattus norvegicus 127-137 6138350-1 1983 The high affinity, sodium-dependent uptake of proline by rat brain synaptosomes was inhibited by the opioid pentapeptides, Leu-enkephalin and Met-enkephalin. Proline 46-53 proenkephalin Rattus norvegicus 146-156 6138350-4 1983 The extent of proline uptake was half-maximal at a Leu-enkephalin concentration of 1 microM. Proline 14-21 proenkephalin Rattus norvegicus 55-65 6138350-10 1983 A modified enkephalin ([D-Ser2]Leu-enkephalin-Thr) with selective affinity for the delta subclass of enkephalin receptor was effective in inhibiting proline uptake. Proline 149-156 proenkephalin Rattus norvegicus 11-21 6138350-10 1983 A modified enkephalin ([D-Ser2]Leu-enkephalin-Thr) with selective affinity for the delta subclass of enkephalin receptor was effective in inhibiting proline uptake. Proline 149-156 proenkephalin Rattus norvegicus 35-45 6138350-10 1983 A modified enkephalin ([D-Ser2]Leu-enkephalin-Thr) with selective affinity for the delta subclass of enkephalin receptor was effective in inhibiting proline uptake. Proline 149-156 proenkephalin Rattus norvegicus 35-45 6138350-11 1983 On the basis of the selectivity of these effects, we propose that there is a specific population of nerve endings in the cerebral cortex that contains both a proline-transport system and binding sites for Leu- and Met-enkephalin and furthermore, that these binding sites may be related to the putative delta receptor. Proline 158-165 proenkephalin Rattus norvegicus 218-228 6414551-2 1983 Naloxone, bradykinin and thyroliberin were found to eliminate respiratory depression induced by morphine and an enkephalin analog. Naloxone 0-8 proenkephalin Rattus norvegicus 112-122 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. Disulfides 41-50 proenkephalin Rattus norvegicus 63-73 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. Disulfides 41-50 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. Disulfides 41-50 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. Disulfides 41-50 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. Disulfides 41-50 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 83-100 proenkephalin Rattus norvegicus 63-73 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 83-100 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 83-100 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 83-100 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 83-100 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 164-181 proenkephalin Rattus norvegicus 63-73 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 164-181 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 164-181 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 164-181 proenkephalin Rattus norvegicus 120-130 6310598-1 1983 The conformationally restricted, cyclic, disulfide-containing, enkephalin analogs [2-D-penicillamine, 5-L-penicillamine]enkephalin [(D-Pen2,L-Pen5]enkephalin) and [2-D-penicillamine, 5-D-penicillamine]enkephalin [(D-Pen2,D-Pen5]enkephalin) were synthesized by solid-phase methods. 2-d-penicillamine 164-181 proenkephalin Rattus norvegicus 120-130 6310598-3 1983 Based on these comparisons [D-Pen2,L-Pen5]- and [D-Pen2,D-Pen5]enkephalin exhibited delta receptor selectivities of 1,088 and 3,164, respectively, in the bioassays, and 371 and 175, respectively, in the binding assays. [d-pen2,d-pen5 48-62 proenkephalin Rattus norvegicus 63-73 6320316-2 1983 Both morphine and beta-endorphin caused a dose-dependent increase in rectal temperature of up to 2 degrees C. By using selective ligands of the subclasses of opiate receptor such as [D-Ala2,D-Leu5]enkephalin for delta-receptors and ethylketocyclazocine, dynorphin(1-17) and dynorphin(1-8) for kappa-receptors, it was possible to show that neither the delta- nor the kappa-opiate receptor was involved in the hyperthermic response. Morphine 5-13 proenkephalin Rattus norvegicus 197-207 6320316-3 1983 However, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO), a mu-receptor ligand, did produce a dose-dependent hyperthermia. mephe4 17-23 proenkephalin Rattus norvegicus 32-42 6195528-7 1983 We demonstrate that the increase in intracellular cyclic AMP induced by noradrenaline is markedly enhanced by somatostatin and substance P and is inhibited by enkephalin, even though these peptides on their own have little or no effect on the basal levels of cyclic AMP. Cyclic AMP 50-60 proenkephalin Rattus norvegicus 159-169 6195528-7 1983 We demonstrate that the increase in intracellular cyclic AMP induced by noradrenaline is markedly enhanced by somatostatin and substance P and is inhibited by enkephalin, even though these peptides on their own have little or no effect on the basal levels of cyclic AMP. Norepinephrine 72-85 proenkephalin Rattus norvegicus 159-169 6195528-7 1983 We demonstrate that the increase in intracellular cyclic AMP induced by noradrenaline is markedly enhanced by somatostatin and substance P and is inhibited by enkephalin, even though these peptides on their own have little or no effect on the basal levels of cyclic AMP. Cyclic AMP 259-269 proenkephalin Rattus norvegicus 159-169 6360061-0 1983 Plasma catecholamine and cardiovascular responses to morphine and D-ala2-d-leu5-enkephalin in conscious rats. Catecholamines 7-20 proenkephalin Rattus norvegicus 80-90 6633967-5 1983 The immunoreactive fractions were also active in inhibiting the binding of [3H]enkephalin to rat brain membranes. Tritium 76-78 proenkephalin Rattus norvegicus 79-89 6311513-7 1983 These results indicate that the enkephalin system in rat anterior pituitary is regulated by circulating gonadal steroid hormones. Steroids 112-128 proenkephalin Rattus norvegicus 32-42 6311513-10 1983 These results suggest that the regulation of the enkephalin system in the anterior lobe may be mediated, at least in part, by the dopamine system, whereas the enkephalin system in the neurointermediate lobe may be regulated mainly through a mechanism similar to that regulating antidiuretic hormone release. Dopamine 130-138 proenkephalin Rattus norvegicus 49-59 6311737-2 1983 The mu receptor agonist D-Ala2-MePhe4-Gly5-ol-enkephalin (DAGO) at a dose of 0.6 or 6.0 nanomoles (Nmol) increased the blood pressure and heart rate in WKY rats. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 58-62 proenkephalin Rattus norvegicus 46-56 6307671-2 1983 The mu-agonist (D-Ala2,MePhe4,Gly5-ol)enkephalin (1 nmol) caused a prolonged increase in blood pressure and an initial decrease followed by a delayed increase in heart rate. mephe4 23-29 proenkephalin Rattus norvegicus 38-48 6307671-2 1983 The mu-agonist (D-Ala2,MePhe4,Gly5-ol)enkephalin (1 nmol) caused a prolonged increase in blood pressure and an initial decrease followed by a delayed increase in heart rate. gly5-ol 30-37 proenkephalin Rattus norvegicus 38-48 6136427-0 1983 Modulatory interactions between enkephalin and catecholamines: anatomical and physiological substrates. Catecholamines 47-61 proenkephalin Rattus norvegicus 32-42 6136427-1 1983 The anatomical and electrophysiological basis of enkephalin-catecholamine interactions was studied in the central nervous system of the Sprague-Dawley rat. Catecholamines 60-73 proenkephalin Rattus norvegicus 49-59 6136427-5 1983 Parenteral administration of antipsychotic agents known to block catecholamine receptors, such as spiroperidol, alpha-flupenthixol, and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions of neuronal activity. Spiperone 98-110 proenkephalin Rattus norvegicus 175-185 6136427-5 1983 Parenteral administration of antipsychotic agents known to block catecholamine receptors, such as spiroperidol, alpha-flupenthixol, and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions of neuronal activity. Flupenthixol 112-130 proenkephalin Rattus norvegicus 175-185 6136427-5 1983 Parenteral administration of antipsychotic agents known to block catecholamine receptors, such as spiroperidol, alpha-flupenthixol, and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions of neuronal activity. Butaclamol 136-150 proenkephalin Rattus norvegicus 175-185 6136427-7 1983 Unilateral lesions of the catecholaminergic projections to frontal cortex produced by interstitial injection of 6-hydroxydopamine resulted in an ipsilateral decrease in enkephalin efficacy and in an elimination of the antagonisms of enkephalin depressions by antipsychotic agents. Oxidopamine 112-129 proenkephalin Rattus norvegicus 169-179 6311973-4 1983 The observation that morphine masks enkephalin receptors is confirmed using 3H-methionine enkephalin to label the enkephalin receptor. Morphine 21-29 proenkephalin Rattus norvegicus 36-46 6311973-4 1983 The observation that morphine masks enkephalin receptors is confirmed using 3H-methionine enkephalin to label the enkephalin receptor. Morphine 21-29 proenkephalin Rattus norvegicus 90-100 6311973-4 1983 The observation that morphine masks enkephalin receptors is confirmed using 3H-methionine enkephalin to label the enkephalin receptor. Morphine 21-29 proenkephalin Rattus norvegicus 90-100 6633945-0 1983 Phencyclidine decreases methionine-enkephalin content in rat striatum. Phencyclidine 0-13 proenkephalin Rattus norvegicus 35-45 6633945-1 1983 The acute administration of phencyclidine induced a decrease in methionine-enkephalin levels in rat striatum, as measured by specific radioimmunoassay. Phencyclidine 28-41 proenkephalin Rattus norvegicus 75-85 6633945-1 1983 The acute administration of phencyclidine induced a decrease in methionine-enkephalin levels in rat striatum, as measured by specific radioimmunoassay. Methionine 64-74 proenkephalin Rattus norvegicus 75-85 6352283-4 1983 The inhibition of enkephalinase, using phosphoryl-Leu-Phe as a selective inhibitor, resulted in a 4 fold increase in the amount of enkephalin recovered following K+ depolarization of rat striatal slices. phosphorylleucylphenylalanine 39-57 proenkephalin Rattus norvegicus 18-28 6350782-2 1983 The binding of 3H-DADL-enkephalin, 3H-dihydromorphine and 3H-naloxone to the brain membranes from rats treated with ethanol was increased. Ethanol 116-123 proenkephalin Rattus norvegicus 23-33 6350782-3 1983 However, addition of ethanol directly in the incubation medium decreased the binding of 3H-DADL enkephalin and increased the binding of 3H-dihydromorphine to brain membranes from both control and ethanol treated rats. Ethanol 21-28 proenkephalin Rattus norvegicus 96-106 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 102-112 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. 3H-dopamine 28-40 proenkephalin Rattus norvegicus 102-112 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. 3H-dopamine 28-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. 3H-dopamine 28-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. 3H-dopamine 28-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dopamine 32-40 proenkephalin Rattus norvegicus 102-112 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dopamine 32-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dopamine 32-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Dopamine 32-40 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Morphine 157-165 proenkephalin Rattus norvegicus 102-112 6353264-0 1983 Correlation between the distribution of 3H-labelled enkephalin in rat brain and the anatomical regions involved in enkephalin-induced seizures. Tritium 40-42 proenkephalin Rattus norvegicus 52-62 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Morphine 157-165 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Morphine 157-165 proenkephalin Rattus norvegicus 129-139 6628536-2 1983 The DMPP-induced release of [3H]dopamine and endogenous dopamine was reduced by the presence of (Met5)enkephalin, (D-Ala2,D-Met5)enkephalin (1-10 microM) or morphine (10 microM) but not by (Leu5)enkephalin or (D-Ala2,D-Leu5)enkephalin. Morphine 157-165 proenkephalin Rattus norvegicus 129-139 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 73-83 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). Dimethylphenylpiperazinium Iodide 4-8 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). [3h]5-hydroxytryptamine 28-51 proenkephalin Rattus norvegicus 73-83 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). [3h]5-hydroxytryptamine 28-51 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). [3h]5-hydroxytryptamine 28-51 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). [3h]5-hydroxytryptamine 28-51 proenkephalin Rattus norvegicus 100-110 6628536-3 1983 The DMPP-induced release of [3H]5-hydroxytryptamine was reduced by (Leu5)enkephalin, (D-Ala2,D-Leu5)enkephalin, (Met5)enkephalin, (D-Ala2,D-Leu5)enkephalin (1-10 microM), and morphine (10 microM). Morphine 175-183 proenkephalin Rattus norvegicus 73-83 6657509-5 1983 In contrast, micropressure ejection of DADL enkephalin onto ZR neurons produced a decrease in firing rate which was blocked by systemically administered naloxone. Zirconium 60-62 proenkephalin Rattus norvegicus 44-54 6657509-5 1983 In contrast, micropressure ejection of DADL enkephalin onto ZR neurons produced a decrease in firing rate which was blocked by systemically administered naloxone. Naloxone 153-161 proenkephalin Rattus norvegicus 44-54 6349637-3 1983 In contrast to the synaptosomal peptidases which are capable of cleaving all peptide bonds of Met-enkephalin-Arg6-Phe7 the peptidase activity associated with the synaptic plasma membrane exclusively hydrolyses a dipeptide from the carboxyl terminus of all hepta- and hexapeptides tested. Dipeptides 212-221 proenkephalin Rattus norvegicus 98-108 6353264-2 1983 administered delta agonist [3H](D-ala2,D-leu5)-enkephalin ([3H]DADL) and the anatomical regions involved in enkephalin-induced seizures has been studied in rat by using an autoradiographic method and recording of the electromyogram (EMG) and the electroencephalogram (EEG). Tritium 28-30 proenkephalin Rattus norvegicus 47-57 6353264-2 1983 administered delta agonist [3H](D-ala2,D-leu5)-enkephalin ([3H]DADL) and the anatomical regions involved in enkephalin-induced seizures has been studied in rat by using an autoradiographic method and recording of the electromyogram (EMG) and the electroencephalogram (EEG). Tritium 60-62 proenkephalin Rattus norvegicus 47-57 6312371-5 1983 Colchicine was needed for the demonstration of cell bodies with the Met-enkephalin antiserum, but not for the heptapeptide antiserum. Colchicine 0-10 proenkephalin Rattus norvegicus 72-82 6304443-1 1983 The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin (DALECK) was synthesized and its potency was tested in competing for 3H-naloxone binding sites and inducing analgesia. 1,3-Dichloroacetone 4-23 proenkephalin Rattus norvegicus 50-60 6312350-5 1983 Since the binding site labeled by [3H]naloxone in the presence of sodium may be an alternate conformation of the morphine receptor, these data provide further evidence that morphine and enkephalin receptors are allosterically coupled. Naloxone 34-46 proenkephalin Rattus norvegicus 186-196 6312350-5 1983 Since the binding site labeled by [3H]naloxone in the presence of sodium may be an alternate conformation of the morphine receptor, these data provide further evidence that morphine and enkephalin receptors are allosterically coupled. Sodium 66-72 proenkephalin Rattus norvegicus 186-196 6312371-0 1983 Distribution of enkephalin-related peptides in rat brain: immunohistochemical studies using antisera to met-enkephalin and met-enkephalin Arg6Phe7. arg6phe7 138-146 proenkephalin Rattus norvegicus 16-26 6312371-1 1983 The enkephalin-related heptapeptide, Tyr-Gly-Gly-Phe-Met-Arg-Phe, forms the C-terminus of a biosynthetic precursor that contains both Met-enkephalin and Leu-enkephalin sequences. Leucine 153-156 proenkephalin Rattus norvegicus 4-14 6683987-1 1983 The effect of the enkephalin pentapeptide analog (WY 42,896) on amphetamine-induced stereotypy was studied in male, albino rats. Amphetamine 64-75 proenkephalin Rattus norvegicus 18-28 6683987-7 1983 These data show an enkephalinergic-dopaminergic interaction in rat striatum, both behaviorally and biochemically, and suggest a presynaptic site of action of the enkephalin on dopamine neurons. Dopamine 35-43 proenkephalin Rattus norvegicus 19-29 6688178-0 1983 Regulation of methionine-enkephalin precursor messenger RNA in rat striatum by haloperidol and lithium. Haloperidol 79-90 proenkephalin Rattus norvegicus 25-35 6688178-0 1983 Regulation of methionine-enkephalin precursor messenger RNA in rat striatum by haloperidol and lithium. Lithium 95-102 proenkephalin Rattus norvegicus 25-35 6688178-1 1983 Daily injections of rats with haloperidol for 21 days or lithium chloride for 5 days elevated the content of Met-enkephalin in the striatum by 86% or 66%, respectively. Haloperidol 30-41 proenkephalin Rattus norvegicus 113-123 6688178-1 1983 Daily injections of rats with haloperidol for 21 days or lithium chloride for 5 days elevated the content of Met-enkephalin in the striatum by 86% or 66%, respectively. Lithium Chloride 57-73 proenkephalin Rattus norvegicus 113-123 6688178-2 1983 Poly(A)+ RNA from striata of drug-treated and control rats was translated in vitro, and the amount of synthesized enkephalin precursor [35S]preproenkephalin A was determined by immunoprecipitation and SDS-polyacrylamide gel electrophoresis. Sulfur-35 136-139 proenkephalin Rattus norvegicus 114-124 6688178-4 1983 These results suggest that haloperidol elevates the Met-enkephalin content primarily by increasing the precursor mRNA content or activity, while lithium exerts its effect only in part by this mechanism. Haloperidol 27-38 proenkephalin Rattus norvegicus 56-66 6304443-1 1983 The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin (DALECK) was synthesized and its potency was tested in competing for 3H-naloxone binding sites and inducing analgesia. 3h-naloxone 130-141 proenkephalin Rattus norvegicus 50-60 6679785-1 1983 Potassium-stimulated uptake of Ca2+ by nerve-ending fractions from rat brain (synaptosomes) is inhibited by morphine and [D-Ala2, D-Leu5]enkephalin. Potassium 0-9 proenkephalin Rattus norvegicus 137-147 6682924-7 1983 Furthermore, a single (0.3 mg/kg, s.c.) injection of the enkephalin analog FK 33-824 (D-Ala2, MePhe4, Met-(0)5-o1) produced a dramatic recovery of performance. mephe4 94-100 proenkephalin Rattus norvegicus 57-67 6682924-7 1983 Furthermore, a single (0.3 mg/kg, s.c.) injection of the enkephalin analog FK 33-824 (D-Ala2, MePhe4, Met-(0)5-o1) produced a dramatic recovery of performance. met-(0)5-o1 102-113 proenkephalin Rattus norvegicus 57-67 6864538-6 1983 Subcutaneously infused morphine animals are cross-tolerant to FK33,824 (Tyr-D-Ala-Gly-NMePhe-Met(O)-ol), a potent enkephalin analog, and vice versa, but are not tolerant to serotonin or phenyldiguanide. Morphine 23-31 proenkephalin Rattus norvegicus 114-124 6864538-6 1983 Subcutaneously infused morphine animals are cross-tolerant to FK33,824 (Tyr-D-Ala-Gly-NMePhe-Met(O)-ol), a potent enkephalin analog, and vice versa, but are not tolerant to serotonin or phenyldiguanide. fk33 62-66 proenkephalin Rattus norvegicus 114-124 6864538-6 1983 Subcutaneously infused morphine animals are cross-tolerant to FK33,824 (Tyr-D-Ala-Gly-NMePhe-Met(O)-ol), a potent enkephalin analog, and vice versa, but are not tolerant to serotonin or phenyldiguanide. tyr-d-ala-gly-nmephe-met(o)-ol 72-102 proenkephalin Rattus norvegicus 114-124 6304248-8 1983 The cross-competition IC50 data supported this conclusion, showing a loss in the potency of morphine in displacing [3H]DADL enkephalin in the thalamus of MSG-treated rats. Morphine 92-100 proenkephalin Rattus norvegicus 124-134 6304248-8 1983 The cross-competition IC50 data supported this conclusion, showing a loss in the potency of morphine in displacing [3H]DADL enkephalin in the thalamus of MSG-treated rats. Tritium 116-118 proenkephalin Rattus norvegicus 124-134 6190182-0 1983 Increase of proenkephalin mRNA and enkephalin content of rat striatum after daily injection of haloperidol for 2 to 3 weeks. Haloperidol 95-106 proenkephalin Rattus norvegicus 12-25 6190182-0 1983 Increase of proenkephalin mRNA and enkephalin content of rat striatum after daily injection of haloperidol for 2 to 3 weeks. Haloperidol 95-106 proenkephalin Rattus norvegicus 15-25 6190182-5 1983 Rats receiving daily intraperitoneal injection of haloperidol (1 or 2 mg/kg) show a fourfold increase of proenkephalin mRNA content in striatum but not other brain regions. Haloperidol 50-61 proenkephalin Rattus norvegicus 105-118 6306069-4 1983 By contrast, opiate receptors labeled with [3H]D-Ala2-D-Leu5-enkephalin in a delta ligand selectivity pattern are much more homogeneously distributed across both regions and laminae within regions. Tritium 44-46 proenkephalin Rattus norvegicus 61-71 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. [d-pen2 24-31 proenkephalin Rattus norvegicus 4-14 6306069-13 1983 Although regional variations in [3H]D-Ala2-D-Leu5-enkephalin-labeled receptor density are uncommon, a gradual decrease in the number of sites along the dorsomedial wall of the cortex from anterior cingulate to caudal retrosplenial limbic cortex can be observed. Tritium 33-35 proenkephalin Rattus norvegicus 50-60 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. l-cys5 32-38 proenkephalin Rattus norvegicus 4-14 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. Disulfides 155-164 proenkephalin Rattus norvegicus 4-14 6683193-0 1983 Physical dependence-producing properties of tetrapeptide acylhydrazide analogs of enkephalin in rats. acylhydrazide 57-70 proenkephalin Rattus norvegicus 82-92 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. Disulfides 155-164 proenkephalin Rattus norvegicus 61-71 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. Penicillamine 258-271 proenkephalin Rattus norvegicus 4-14 6304440-1 1983 The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. Penicillamine 258-271 proenkephalin Rattus norvegicus 61-71 6871550-3 1983 Whereas responses to Met-enkephalin were readily antagonized by naloxone, responses to kyotorphin and D-phenylalanine were not. Naloxone 64-72 proenkephalin Rattus norvegicus 25-35 6873178-0 1983 Brain content of immunoreactive [Leu5]enkephalin and [Met5]enkephalin after pentylenetetrazol-induced convulsions. Pentylenetetrazole 76-93 proenkephalin Rattus norvegicus 38-48 6873178-3 1983 In both instances we found a significant increase of IR [Leu5]enkephalin and IR [Met5]enkephalin in septum, striatum and amygdala 24 h after PTZ administration. Pentylenetetrazole 141-144 proenkephalin Rattus norvegicus 62-72 6873178-3 1983 In both instances we found a significant increase of IR [Leu5]enkephalin and IR [Met5]enkephalin in septum, striatum and amygdala 24 h after PTZ administration. Pentylenetetrazole 141-144 proenkephalin Rattus norvegicus 86-96 6346134-1 1983 The distribution of the neuropeptides vasoactive intestinal polypeptide, cholecystokinin octapeptide, substance P, neurotensin, methionine-enkephalin and somatostatin has been mapped immunocytochemically in the bed nucleus of the stria terminalis, one of the major sites of termination for efferent projections from the amygdala. Methionine 128-138 proenkephalin Rattus norvegicus 139-149 6834054-5 1983 The met5-enkephalin-arg6-phe7 in striatum can be released in a Ca2+-dependent manner by a depolarizing concentration of KCl, raising the possibility of a neuroregulatory role for met5-enkephalin-arg6-phe7. Potassium Chloride 120-123 proenkephalin Rattus norvegicus 9-19 6834054-5 1983 The met5-enkephalin-arg6-phe7 in striatum can be released in a Ca2+-dependent manner by a depolarizing concentration of KCl, raising the possibility of a neuroregulatory role for met5-enkephalin-arg6-phe7. Potassium Chloride 120-123 proenkephalin Rattus norvegicus 184-194 6850307-1 1983 This study reports a novel action of Met5-enkephalin in the rat substantia nigra, i.e. potent contraversive rotation that is dose-dependent, site-specific, mimicked by morphine and blocked by naloxone. Morphine 168-176 proenkephalin Rattus norvegicus 42-52 6850307-1 1983 This study reports a novel action of Met5-enkephalin in the rat substantia nigra, i.e. potent contraversive rotation that is dose-dependent, site-specific, mimicked by morphine and blocked by naloxone. Naloxone 192-200 proenkephalin Rattus norvegicus 42-52 6304563-9 1983 Comparison of [3H]fentanyl, [3H]naloxone and [3H-D-Ala2,D-Leu5]enkephalin binding in the hypothalamus-thalamus (mu-enriched) compared with the frontal cortex-striatum (delta-enriched) indicated that the pattern of [3H]fentanyl labelling was similar to that obtained with [3H]naloxone, but differed from that obtained with [3H-D-Ala2,D-Leu5]enkephalin. d-leu5 56-62 proenkephalin Rattus norvegicus 63-73 6346134-4 1983 The lateral bed nucleus also contained cholecystokinin-octapeptide, substance P, neurotensin and methionine-enkephalin immunoreactivity which probably derived from the central amygdaloid nucleus, whilst cholecystokinin-octapeptide, and especially substance P-containing fibres, were found in the medial bed nucleus and probably arise from cells in the medial amygdala. Methionine 97-107 proenkephalin Rattus norvegicus 108-118 6306698-1 1983 Rats exposed to combined cold and restraint exhibited a reduced intensity of gastric damage when pre-treated intraperitoneally with morphine HCl or with the synthetic enkephalin analog [D-Ala2, MePhe4, Met(0)5ol]enkephalin (FK 33-824). Morphine hydrochloride 132-144 proenkephalin Rattus norvegicus 212-222 6838839-6 1983 It releases tyrosine from Met-enkephalin, but it does not split the byproduct. Tyrosine 12-20 proenkephalin Rattus norvegicus 30-40 6301470-4 1983 Deltakephalin occurs as the most specific ligand for delta-binding sites as shown by the following discrimination ratios KI(mu)/KI(delta): 0.31 for D-Ala2-D-Leu5-enkephalin; 0.15 for D-Ser2-Thr6-Leu-enkephalin and 0.05 for deltakephalin. deltakephalin 0-13 proenkephalin Rattus norvegicus 162-172 6301470-4 1983 Deltakephalin occurs as the most specific ligand for delta-binding sites as shown by the following discrimination ratios KI(mu)/KI(delta): 0.31 for D-Ala2-D-Leu5-enkephalin; 0.15 for D-Ser2-Thr6-Leu-enkephalin and 0.05 for deltakephalin. deltakephalin 0-13 proenkephalin Rattus norvegicus 199-209 6572590-1 1983 In the presence of thiorphan an "enkephalinase" inhibitor, bestatin an aminopeptidase inhibitor of bacterial origin potently inhibited the hydrolysis of [3H][Leu5]enkephalin by slices from rat striatum with an IC50 value of about 0.2 microM whereas puromycin was approximately 1000 times less potent on this preparation. Thiorphan 19-28 proenkephalin Rattus norvegicus 33-43 6131372-0 1983 Methionine oxidation enhances opioid activity of an enkephalin analog. Methionine 0-10 proenkephalin Rattus norvegicus 52-62 6304550-6 1983 We conclude that the biphasic off-kinetics of [3H]leucine enkephalin is not evidence for a two-site binding model. Tritium 47-49 proenkephalin Rattus norvegicus 58-68 6302675-0 1983 Unmasking of magnesium-dependent high-affinity binding sites for [dAla2, dLeu5]enkephalin after pretreatment of brain membranes with guanine nucleotides. Magnesium 13-22 proenkephalin Rattus norvegicus 79-89 6302675-0 1983 Unmasking of magnesium-dependent high-affinity binding sites for [dAla2, dLeu5]enkephalin after pretreatment of brain membranes with guanine nucleotides. Guanine Nucleotides 133-152 proenkephalin Rattus norvegicus 79-89 6302675-1 1983 The regulation of mu- and delta-opiate receptors by guanine nucleotides and cations was studied by examining the binding of [3H][DAla2, DLeu5]enkephalin to rat brain membranes. Tritium 125-127 proenkephalin Rattus norvegicus 142-152 6299758-2 1983 The greatest effect was obtained with the combination of bestatin (10 microM or 30 microM), captopril (10 microM), thiorphan (0.3 microM) and L-Leucyl-L-leucine (2 mM) which increased the potency of [Met5]enkephalin 18-fold in the guinea-pig myenteric plexus, 13-fold in the mouse vas deferens and 200-fold in the rat vas deferens. ubenimex 57-65 proenkephalin Rattus norvegicus 205-215 6299758-2 1983 The greatest effect was obtained with the combination of bestatin (10 microM or 30 microM), captopril (10 microM), thiorphan (0.3 microM) and L-Leucyl-L-leucine (2 mM) which increased the potency of [Met5]enkephalin 18-fold in the guinea-pig myenteric plexus, 13-fold in the mouse vas deferens and 200-fold in the rat vas deferens. Captopril 92-101 proenkephalin Rattus norvegicus 205-215 6299758-2 1983 The greatest effect was obtained with the combination of bestatin (10 microM or 30 microM), captopril (10 microM), thiorphan (0.3 microM) and L-Leucyl-L-leucine (2 mM) which increased the potency of [Met5]enkephalin 18-fold in the guinea-pig myenteric plexus, 13-fold in the mouse vas deferens and 200-fold in the rat vas deferens. Thiorphan 115-124 proenkephalin Rattus norvegicus 205-215 6299758-2 1983 The greatest effect was obtained with the combination of bestatin (10 microM or 30 microM), captopril (10 microM), thiorphan (0.3 microM) and L-Leucyl-L-leucine (2 mM) which increased the potency of [Met5]enkephalin 18-fold in the guinea-pig myenteric plexus, 13-fold in the mouse vas deferens and 200-fold in the rat vas deferens. leucylleucine 142-160 proenkephalin Rattus norvegicus 205-215 6132825-9 1983 Moreover, the binding affinity of sufentanil for delta-type binding sites labelled by [3H] [D-Ala2,D-Leu5]enkephalin was found to be 100 times lower than its binding affinity for the mu-receptor sites. Sufentanil 34-44 proenkephalin Rattus norvegicus 106-116 6132825-9 1983 Moreover, the binding affinity of sufentanil for delta-type binding sites labelled by [3H] [D-Ala2,D-Leu5]enkephalin was found to be 100 times lower than its binding affinity for the mu-receptor sites. Tritium 87-90 proenkephalin Rattus norvegicus 106-116 6831119-7 1983 The ability of (-)-Nal to reverse inhibitory action of morphine or the enkephalin (FK 33,824) was not affected by hypophysectomy. Naloxone 15-22 proenkephalin Rattus norvegicus 71-81 6572590-1 1983 In the presence of thiorphan an "enkephalinase" inhibitor, bestatin an aminopeptidase inhibitor of bacterial origin potently inhibited the hydrolysis of [3H][Leu5]enkephalin by slices from rat striatum with an IC50 value of about 0.2 microM whereas puromycin was approximately 1000 times less potent on this preparation. Tritium 154-156 proenkephalin Rattus norvegicus 33-43 6572590-2 1983 In vivo bestatin or thiorphan (but not puromycin) significantly protected [3H][Met5]enkephalin administered intracerebroventricularly to mice from hydrolysis and co-administration of these two peptidase inhibitors resulted in a strong reduction in the appearance of hydrolysis products in brain. Thiorphan 20-29 proenkephalin Rattus norvegicus 84-94 6572590-2 1983 In vivo bestatin or thiorphan (but not puromycin) significantly protected [3H][Met5]enkephalin administered intracerebroventricularly to mice from hydrolysis and co-administration of these two peptidase inhibitors resulted in a strong reduction in the appearance of hydrolysis products in brain. Tritium 75-77 proenkephalin Rattus norvegicus 84-94 6572590-3 1983 In a parallel fashion the antinociceptive activity of [Met5]enkephalin in the mouse hot-plate test was additively potentiated by bestatin and thiorphan but not by puromycin. ubenimex 129-137 proenkephalin Rattus norvegicus 60-70 6572590-3 1983 In a parallel fashion the antinociceptive activity of [Met5]enkephalin in the mouse hot-plate test was additively potentiated by bestatin and thiorphan but not by puromycin. Thiorphan 142-151 proenkephalin Rattus norvegicus 60-70 6871966-0 1983 Appearance of enkephalin-immunoreactivity in rat adrenal medulla following treatment with nicotinic antagonists or reserpine. Reserpine 115-124 proenkephalin Rattus norvegicus 14-24 6424884-0 1983 [Inhibition of the evoked liberation of (Met5)enkephalin from slices of globus pallidus in the presence of thiorphan and bestatin]. Thiorphan 107-116 proenkephalin Rattus norvegicus 46-56 6424884-0 1983 [Inhibition of the evoked liberation of (Met5)enkephalin from slices of globus pallidus in the presence of thiorphan and bestatin]. ubenimex 121-129 proenkephalin Rattus norvegicus 46-56 6424884-3 1983 The latter effect being reversed in the presence of an opioid antagonist, naloxone, in moderate concentration, the existence of an auto-inhibition process regulating enkephalin release is suggested. Naloxone 74-82 proenkephalin Rattus norvegicus 166-176 6871966-4 1983 These observations suggest that splanchnic nerve activity normally depresses the levels of enkephalin-like peptides in chromaffin cells through a trans-synaptic mechanism involving acetylcholine release and nicotinic receptor stimulation. chromaffin 119-129 proenkephalin Rattus norvegicus 91-101 6871966-4 1983 These observations suggest that splanchnic nerve activity normally depresses the levels of enkephalin-like peptides in chromaffin cells through a trans-synaptic mechanism involving acetylcholine release and nicotinic receptor stimulation. Acetylcholine 181-194 proenkephalin Rattus norvegicus 91-101 6141489-10 1983 An enkephalin sequence at the amino-terminus of large opioid peptides seems to be required to retain high affinity for delta- and benzomorphan binding sites. Benzomorphans 130-142 proenkephalin Rattus norvegicus 3-13 6319864-1 1983 Pretreatment of rat brain membranes at pH 4.5 increased GTP and Gpp(NH)p regulation of [3H]-D-ala2-met5-enkephalinamide (D-ala-enk) binding with no change in absolute binding itself. Tritium 88-90 proenkephalin Rattus norvegicus 104-107 6319901-3 1983 For [D-Pen2, L-Pen5]- and [D-Pen2, D-Pen5]enkephalin the observed IC50(GPI)/IC50 (MVD) ratios (1088 and 3164) and IC50NAL/IC50DADLE ratios (371 and 175) represent a vast improvement over previously reported delta receptor selective ligands. [d-pen2, l-pen5 4-19 proenkephalin Rattus norvegicus 42-52 6319867-3 1983 Ligand selectivity shows that [3H]DAGO and [3H]DTLET are more selective ligands for their respective receptors than [3H]dihydromorphine (DHM) and [3H][D-Ala2,D-Leu5]enkephalin (DADLE). [3h]dago 30-38 proenkephalin Rattus norvegicus 165-175 6319867-3 1983 Ligand selectivity shows that [3H]DAGO and [3H]DTLET are more selective ligands for their respective receptors than [3H]dihydromorphine (DHM) and [3H][D-Ala2,D-Leu5]enkephalin (DADLE). [3h]dtlet 43-52 proenkephalin Rattus norvegicus 165-175 6319870-3 1983 Enkephalinase (PDP-2) cleaves 80 nM [3H-Tyr1, Leu5]-enkephalin, but not Hip-His-Leu; it is not inhibited by any of the standard competitive inhibitors of angiotensin-converting enzyme (all analogs of carboxyl-terminal peptide sequences Phe-Ala-Pro or Ala-Pro), but is strongly inhibited by captopril analogs such as thiorphan (Phe-Gly analog). 3h-tyr1 50-57 proenkephalin Rattus norvegicus 65-75 6319889-3 1983 D-ala2, D-leu5-enkephalin (DADL) induced down-regulation of opiate receptors in aggregates prepared from the forebrain but had no effect on hindbrain aggregates, whereas the potent alkaloid etorphine induced down-regulation of the receptors in both tissues. Etorphine 190-199 proenkephalin Rattus norvegicus 15-25 6319901-0 1983 Cyclic penicillamine containing enkephalin analogs display profound delta receptor selectivities. cyclic penicillamine 0-20 proenkephalin Rattus norvegicus 32-42 6686641-1 1983 The effect of the metabolically stable enkephalin pentapeptide analog, D-Ala2-D-Pro5-enkephalinamide monoacetate (DAP) (WY 42, 186) was studied on amphetamine-induced hyperactive behavior and on dopamine release from tuberculum olfactorium in male, Sprague-Dawley rats. d-ala2-d-pro5-enkephalinamide monoacetate 71-112 proenkephalin Rattus norvegicus 39-49 6363850-1 1983 It is generally assumed that enkephalinase A, a highly thiorphan-sensitive dipeptidylcarboxypeptidase cleaving the Gly-Phe bond during enkephalin degradation, is bound to the neuronal membrane. Glycine 115-118 proenkephalin Rattus norvegicus 29-39 6686641-1 1983 The effect of the metabolically stable enkephalin pentapeptide analog, D-Ala2-D-Pro5-enkephalinamide monoacetate (DAP) (WY 42, 186) was studied on amphetamine-induced hyperactive behavior and on dopamine release from tuberculum olfactorium in male, Sprague-Dawley rats. Amphetamine 147-158 proenkephalin Rattus norvegicus 39-49 6200737-0 1983 Enkephalin-like immunofluorescence in nerves of the rat iris following systemic capsaicin injection. Capsaicin 80-89 proenkephalin Rattus norvegicus 0-10 6200737-3 1983 The enkephalin-immunoreactive network seemed intact also after a capsaicin dose of 250 mg/kg. Capsaicin 65-74 proenkephalin Rattus norvegicus 4-14 6200737-4 1983 In fact, the fluorescence intensity of the nerve fibers showing enkephalin-immunoreactivity was often increased three days after a capsaicin injection in a dose of 50 mg/kg. Capsaicin 131-140 proenkephalin Rattus norvegicus 64-74 6200737-5 1983 The mechanism behind this effect of capsaicin remains to be elucidated, but could be due either to a direct effect on the enkephalin-positive nerves or involve the disappearance of substance P nerves and/or a simultaneous inflammatory response. Capsaicin 36-45 proenkephalin Rattus norvegicus 122-132 6363850-1 1983 It is generally assumed that enkephalinase A, a highly thiorphan-sensitive dipeptidylcarboxypeptidase cleaving the Gly-Phe bond during enkephalin degradation, is bound to the neuronal membrane. Phenylalanine 119-122 proenkephalin Rattus norvegicus 29-39 6200737-6 1983 However, an increased fluorescence intensity of the enkephalin-immunoreactive fibers was sometimes seen also without capsaicin treatment. Capsaicin 117-126 proenkephalin Rattus norvegicus 52-62 6363855-2 1983 In the present study, the effects of unilateral injections of D-ala2, D-leu5-enkephalin (DADL) into the ACB were evaluated. acb 104-107 proenkephalin Rattus norvegicus 77-87 6363855-15 1983 It seemed of interest to study the effect of D-ala2, D-leu5-enkephalin (DADL), when injected into the ACB, on locomotor activity. acb 102-105 proenkephalin Rattus norvegicus 60-70 6312620-0 1983 Effect of an acute dose of delta 9-THC on hypothalamic luteinizing hormone releasing hormone and met-enkephalin content and serum levels of testosterone and corticosterone in rats. Dronabinol 27-38 proenkephalin Rattus norvegicus 101-111 6141552-0 1983 The effect of a single temazepam administration on enkephalin content in the striatum and hypothalamus of the rat. Temazepam 23-32 proenkephalin Rattus norvegicus 51-61 6141552-1 1983 Temazepam, a benzodiazepine ataractic, given in a dose of 10 mg/kg ip to rats depressed the striatal contents of met-enkephalin and leu-enkephalin by 60 and 35% resp. Temazepam 0-9 proenkephalin Rattus norvegicus 117-127 6141552-1 1983 Temazepam, a benzodiazepine ataractic, given in a dose of 10 mg/kg ip to rats depressed the striatal contents of met-enkephalin and leu-enkephalin by 60 and 35% resp. Temazepam 0-9 proenkephalin Rattus norvegicus 136-146 6141552-1 1983 Temazepam, a benzodiazepine ataractic, given in a dose of 10 mg/kg ip to rats depressed the striatal contents of met-enkephalin and leu-enkephalin by 60 and 35% resp. Benzodiazepines 13-27 proenkephalin Rattus norvegicus 117-127 6141552-3 1983 In the hypothalamus temazepam produced a short-lasting elevation of met-enkephalin content (225% of the control value). Temazepam 20-29 proenkephalin Rattus norvegicus 72-82 6188075-7 1983 Kainate-depleted methionine-enkephalin but did not alter any other neuropeptides studied or serotonin. Kainic Acid 0-7 proenkephalin Rattus norvegicus 28-38 6132379-4 1983 Intrahippocampal colchicine injections, which selectively destroy dentate granule cells, significantly decrease the dynorphin-ir and enkephalin-ir levels in rat hippocampus. Colchicine 17-27 proenkephalin Rattus norvegicus 133-143 6312620-2 1983 In delta 9-THC treated ovariectomized rats, the mediobasal hypothalamic (MBH) LHRH and methionine-enkephalin (met-enk) contents were high compared to either vehicle or naloxone groups. Dronabinol 3-14 proenkephalin Rattus norvegicus 98-108 6312620-2 1983 In delta 9-THC treated ovariectomized rats, the mediobasal hypothalamic (MBH) LHRH and methionine-enkephalin (met-enk) contents were high compared to either vehicle or naloxone groups. Dronabinol 3-14 proenkephalin Rattus norvegicus 98-101 7161327-1 1982 A specific method is presented for the assay of leucine-enkephalin (Leu-Enk) and its metabolites by reversed-phase high-performance liquid chromatography on a muBondapak C18 column with a mobile phase of methanol-water and 0.005 M tetrabutylammonium phosphate. Methanol 204-212 proenkephalin Rattus norvegicus 72-75 7161327-1 1982 A specific method is presented for the assay of leucine-enkephalin (Leu-Enk) and its metabolites by reversed-phase high-performance liquid chromatography on a muBondapak C18 column with a mobile phase of methanol-water and 0.005 M tetrabutylammonium phosphate. Water 213-218 proenkephalin Rattus norvegicus 72-75 7161327-1 1982 A specific method is presented for the assay of leucine-enkephalin (Leu-Enk) and its metabolites by reversed-phase high-performance liquid chromatography on a muBondapak C18 column with a mobile phase of methanol-water and 0.005 M tetrabutylammonium phosphate. Tetrabutylammonium dihydrogen phosphate 231-259 proenkephalin Rattus norvegicus 72-75 7161327-5 1982 This method allows the study of the effect of Phe-Ala on the cerebral metabolism of Leu-Enk. phenylalanylalanine 46-53 proenkephalin Rattus norvegicus 88-91 7161327-5 1982 This method allows the study of the effect of Phe-Ala on the cerebral metabolism of Leu-Enk. Leucine 84-87 proenkephalin Rattus norvegicus 88-91 7161327-6 1982 For this purpose, membrane preparations from rat striatum were incubated in the presence of [3H]Leu-Enk with different concentrations of Phe-Ala from 10(-7) to 10(-3) M during 1 h at 37 degrees C. Collected eluates were counted by liquid scintillation. Leucine 96-99 proenkephalin Rattus norvegicus 100-103 7161327-8 1982 Maximum inhibition of [3H]Leu-Enk degradation is obtained at a concentration of 10(-3) M Phe-Ala. Tritium 23-25 proenkephalin Rattus norvegicus 30-33 7161327-8 1982 Maximum inhibition of [3H]Leu-Enk degradation is obtained at a concentration of 10(-3) M Phe-Ala. phenylalanylalanine 89-96 proenkephalin Rattus norvegicus 30-33 6890397-5 1982 This effect is seen following a high dose (50 mg/kg) of morphine or a low dose (6 mg/kg) of enkephalin analogue (LY146104), and is reversed by naloxone. ly146104 113-121 proenkephalin Rattus norvegicus 92-102 6132379-5 1983 Intraventricularly administered kainic acid, which selectively destroys CA3-4 pyramidal cells, results in an increase of enkephalin immunostaining in mossy fibers and a significant increase in enkephalin-ir by radioimmunoassay in whole hippocampus. Kainic Acid 32-43 proenkephalin Rattus norvegicus 121-131 6132379-5 1983 Intraventricularly administered kainic acid, which selectively destroys CA3-4 pyramidal cells, results in an increase of enkephalin immunostaining in mossy fibers and a significant increase in enkephalin-ir by radioimmunoassay in whole hippocampus. Kainic Acid 32-43 proenkephalin Rattus norvegicus 193-203 7150767-0 1982 [Effect of prostaglandins, cyclic nucleotides and ions on the analgesic effect of enkephalin analogs]. Prostaglandins 11-25 proenkephalin Rattus norvegicus 82-92 7150767-0 1982 [Effect of prostaglandins, cyclic nucleotides and ions on the analgesic effect of enkephalin analogs]. Nucleotides, Cyclic 27-45 proenkephalin Rattus norvegicus 82-92 7150767-3 1982 PGE1, PGE2, PGE2 alpha, cAMP, and dibutyryl cAMP were shown to diminish the effect of the above-mentioned enkephalin analogs. Alprostadil 0-4 proenkephalin Rattus norvegicus 106-116 7150767-3 1982 PGE1, PGE2, PGE2 alpha, cAMP, and dibutyryl cAMP were shown to diminish the effect of the above-mentioned enkephalin analogs. Dinoprostone 6-10 proenkephalin Rattus norvegicus 106-116 7150767-3 1982 PGE1, PGE2, PGE2 alpha, cAMP, and dibutyryl cAMP were shown to diminish the effect of the above-mentioned enkephalin analogs. Dinoprostone 12-16 proenkephalin Rattus norvegicus 106-116 7150767-3 1982 PGE1, PGE2, PGE2 alpha, cAMP, and dibutyryl cAMP were shown to diminish the effect of the above-mentioned enkephalin analogs. Cyclic AMP 24-28 proenkephalin Rattus norvegicus 106-116 7150767-3 1982 PGE1, PGE2, PGE2 alpha, cAMP, and dibutyryl cAMP were shown to diminish the effect of the above-mentioned enkephalin analogs. Bucladesine 34-48 proenkephalin Rattus norvegicus 106-116 6292396-5 1982 Although Met5-enkephalin content in striatum was increased transiently by d-fenfluramine, this was not a serotonin-mediated effect because it was not abolished by metergoline. Dexfenfluramine 74-88 proenkephalin Rattus norvegicus 14-24 6891334-0 1982 Analgesic and other pharmacological activities of an enkephalin analogue, syndyphalin (SD)-25. syndyphalin (sd)-25 74-93 proenkephalin Rattus norvegicus 53-63 6890397-5 1982 This effect is seen following a high dose (50 mg/kg) of morphine or a low dose (6 mg/kg) of enkephalin analogue (LY146104), and is reversed by naloxone. Naloxone 143-151 proenkephalin Rattus norvegicus 92-102 7162336-4 1982 Ovariectomy produced a significant increase in the enkephalin levels of the same region but this increase was completely prevented by replacement with estradiol. Estradiol 151-160 proenkephalin Rattus norvegicus 51-61 6761529-0 1982 Repeated electroconvulsive shock or chronic morphine treatment increases the number of 3H-D-Ala2,D-Leu5-enkephalin binding sites in rat brain membranes. Morphine 44-52 proenkephalin Rattus norvegicus 104-114 7162336-6 1982 Repeated injections of haloperidol elicited effects similar to those of estrogen on the pituitary and brain enkephalin levels; namely, striatal enkephalin levels were increased whereas pituitary enkephalin levels were decreased after long-term treatment with these two compounds. Haloperidol 23-34 proenkephalin Rattus norvegicus 108-118 6761529-0 1982 Repeated electroconvulsive shock or chronic morphine treatment increases the number of 3H-D-Ala2,D-Leu5-enkephalin binding sites in rat brain membranes. 3h-d-ala2 87-96 proenkephalin Rattus norvegicus 104-114 7162336-6 1982 Repeated injections of haloperidol elicited effects similar to those of estrogen on the pituitary and brain enkephalin levels; namely, striatal enkephalin levels were increased whereas pituitary enkephalin levels were decreased after long-term treatment with these two compounds. Haloperidol 23-34 proenkephalin Rattus norvegicus 144-154 6291693-3 1982 For the delta-site, [(3)H]-[D-Ala(2),D-Leu(5)]enkephalin was used in the presence of unlabelled [D-Ala(2),MePhe(4),Gly-ol(5)]enkephalin in order to suppress cross-reactivity to the mu-binding site. Tritium 20-25 proenkephalin Rattus norvegicus 46-56 7171387-7 1982 This finding suggests that the impairing actions of the two enkephalins are not produced in the same way, but it is consistent with the interpretation that the adrenal medulla may play a role in mediating the actions of Met- and Leu-enkephalin on active avoidance conditioning. Leucine 229-232 proenkephalin Rattus norvegicus 60-70 6291693-3 1982 For the delta-site, [(3)H]-[D-Ala(2),D-Leu(5)]enkephalin was used in the presence of unlabelled [D-Ala(2),MePhe(4),Gly-ol(5)]enkephalin in order to suppress cross-reactivity to the mu-binding site. D-LEUCINE 37-42 proenkephalin Rattus norvegicus 46-56 6291693-3 1982 For the delta-site, [(3)H]-[D-Ala(2),D-Leu(5)]enkephalin was used in the presence of unlabelled [D-Ala(2),MePhe(4),Gly-ol(5)]enkephalin in order to suppress cross-reactivity to the mu-binding site. N-Methyl-L-phenylalanine 106-111 proenkephalin Rattus norvegicus 46-56 6291693-3 1982 For the delta-site, [(3)H]-[D-Ala(2),D-Leu(5)]enkephalin was used in the presence of unlabelled [D-Ala(2),MePhe(4),Gly-ol(5)]enkephalin in order to suppress cross-reactivity to the mu-binding site. gly-ol 115-121 proenkephalin Rattus norvegicus 46-56 6296569-1 1982 The 2-nitro-4-azidophenyl(NAP)-D-Ala2-Leu5-Enkephalin derivatives: Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-NAP (E-NAP-EDA) and Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-COCH2CH2NHNAP(E-NAP- -Ala-EDA) were synthesized by conventional peptide methods. 2-nitro-4-azidophenyl 4-25 proenkephalin Rattus norvegicus 43-53 6131355-4 1982 At this site, the mu agonist D-Ala2-MePhe4-Gly5-ol-Enkephalin (DAGO) produced hypotension, tachycardia and bradypnea, DAGO and DADL but not Morphine or Dynorphin also caused bradypnea in this region. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 63-67 proenkephalin Rattus norvegicus 51-61 6131355-4 1982 At this site, the mu agonist D-Ala2-MePhe4-Gly5-ol-Enkephalin (DAGO) produced hypotension, tachycardia and bradypnea, DAGO and DADL but not Morphine or Dynorphin also caused bradypnea in this region. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 118-122 proenkephalin Rattus norvegicus 51-61 6131355-4 1982 At this site, the mu agonist D-Ala2-MePhe4-Gly5-ol-Enkephalin (DAGO) produced hypotension, tachycardia and bradypnea, DAGO and DADL but not Morphine or Dynorphin also caused bradypnea in this region. Morphine 140-148 proenkephalin Rattus norvegicus 51-61 7177488-1 1982 The distribution of enkephalin immunoreactive cell bodies was studied in the central nervous system of colchicine-treated monkeys. Colchicine 103-113 proenkephalin Rattus norvegicus 20-30 6296569-1 1982 The 2-nitro-4-azidophenyl(NAP)-D-Ala2-Leu5-Enkephalin derivatives: Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-NAP (E-NAP-EDA) and Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-COCH2CH2NHNAP(E-NAP- -Ala-EDA) were synthesized by conventional peptide methods. try-d-ala-gly-phe-leu conch2ch2nh-nap 67-104 proenkephalin Rattus norvegicus 43-53 6296569-1 1982 The 2-nitro-4-azidophenyl(NAP)-D-Ala2-Leu5-Enkephalin derivatives: Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-NAP (E-NAP-EDA) and Try-D-Ala-Gly-Phe-Leu CONCH2CH2NH-COCH2CH2NHNAP(E-NAP- -Ala-EDA) were synthesized by conventional peptide methods. try-d-ala-gly-phe-leu conch2ch2nh-coch2ch2nhnap 121-168 proenkephalin Rattus norvegicus 43-53 6292643-1 1982 A dimeric pentapeptide enkephalin (DPE2) consisting of two molecules of [D-Ala 2, Leu 5] enkephalin linked at C-terminal leucine with ethylenediamine, (H-Tyr-D-Ala-Gly-Phe-Leu-NH-Ch2)2 is a bivalent ligand for the delta enkephalin receptors of rat brain and neuroblastoma-glioma hybrid (NG108-15) cells. Leucine 82-85 proenkephalin Rattus norvegicus 23-33 7154836-0 1982 Effects of chronic lithium on enkephalin systems and pain responsiveness. Lithium 19-26 proenkephalin Rattus norvegicus 30-40 7154836-8 1982 In contrast, the release of 1-enk-IR was potentiated but only in subjects in which the brain lithium exceeded a threshold level. Lithium 93-100 proenkephalin Rattus norvegicus 30-33 6292643-1 1982 A dimeric pentapeptide enkephalin (DPE2) consisting of two molecules of [D-Ala 2, Leu 5] enkephalin linked at C-terminal leucine with ethylenediamine, (H-Tyr-D-Ala-Gly-Phe-Leu-NH-Ch2)2 is a bivalent ligand for the delta enkephalin receptors of rat brain and neuroblastoma-glioma hybrid (NG108-15) cells. Leucine 121-128 proenkephalin Rattus norvegicus 23-33 6292643-1 1982 A dimeric pentapeptide enkephalin (DPE2) consisting of two molecules of [D-Ala 2, Leu 5] enkephalin linked at C-terminal leucine with ethylenediamine, (H-Tyr-D-Ala-Gly-Phe-Leu-NH-Ch2)2 is a bivalent ligand for the delta enkephalin receptors of rat brain and neuroblastoma-glioma hybrid (NG108-15) cells. ethylenediamine 134-149 proenkephalin Rattus norvegicus 23-33 6292643-1 1982 A dimeric pentapeptide enkephalin (DPE2) consisting of two molecules of [D-Ala 2, Leu 5] enkephalin linked at C-terminal leucine with ethylenediamine, (H-Tyr-D-Ala-Gly-Phe-Leu-NH-Ch2)2 is a bivalent ligand for the delta enkephalin receptors of rat brain and neuroblastoma-glioma hybrid (NG108-15) cells. Tyrosine 154-157 proenkephalin Rattus norvegicus 23-33 6186955-3 1982 A single injection of chlordecone (1 mg/pup on day 4 of age) reduced the level of [Met5]-enkephalin at 70 and 120 days of age in male rats but not in females. Chlordecone 22-33 proenkephalin Rattus norvegicus 89-99 7154840-1 1982 Utilizing a nine amino-acid (Asp-Glu-Leu-Tyr-Pro-Leu-Glu-Val-Glu) non-enkephalin containing fragment of Peptide F from the pro-enkephalin molecule, a radioimmunoassay was developed. asp-glu-leu-tyr-pro-leu-glu-val-glu 29-64 proenkephalin Rattus norvegicus 127-137 6185764-1 1982 An enkephalin analogue, D-Ala2-Met5-enkephalinamide (DAME), caused a fall in blood pressure (BP) following right atrial administration (RA) in urethane-anesthetized rats that were also atropinized, paralyzed, and artificially ventilated. Radium 136-138 proenkephalin Rattus norvegicus 3-13 6185764-1 1982 An enkephalin analogue, D-Ala2-Met5-enkephalinamide (DAME), caused a fall in blood pressure (BP) following right atrial administration (RA) in urethane-anesthetized rats that were also atropinized, paralyzed, and artificially ventilated. Urethane 143-151 proenkephalin Rattus norvegicus 3-13 7178189-6 1982 Iontophoretic or SC naloxone usually antagonized the excitatory actions of ethanol, salsolinol and methionine5-enkephalin on HPC pyramidal cells; however, ACh-induced speeding also was antagonized occasionally. Naloxone 20-28 proenkephalin Rattus norvegicus 111-121 7178189-6 1982 Iontophoretic or SC naloxone usually antagonized the excitatory actions of ethanol, salsolinol and methionine5-enkephalin on HPC pyramidal cells; however, ACh-induced speeding also was antagonized occasionally. Acetylcholine 155-158 proenkephalin Rattus norvegicus 111-121 6186955-6 1982 These results suggest that hypothalamo-pituitary axis may be the primary neural target affected by chlordecone and estrogen-like activity may be related to the chlordecone-elicited decrease in pituitary [Met5]-enkephalin level. Chlordecone 160-171 proenkephalin Rattus norvegicus 210-220 6127147-2 1982 In contrast, intrathecal ethylketocyclazocine (EKC) and (D-Ala2,D-Leu5)-enkephalin (DADL) administration resulted in a dose-dependent antinociceptive effect which was reversible with intraperitoneal naloxone. Naloxone 199-207 proenkephalin Rattus norvegicus 72-82 6292613-1 1982 Receptor mechanisms for opiate induced respiratory depression and analgesia (tail-flick) were studied by the ED50 ratios and the apparent pA2 values of the interactions of naloxone with the mu-agonists morphine and D-ala2-me-phe4-met (O)ol5-enkephalin (FK-33824), and the delta-agonists D-ala2-D-leu5-enkephalin (DADL) and tyr-D-ser-gly-phe-leu-thr. Opiate Alkaloids 24-30 proenkephalin Rattus norvegicus 241-251 6292613-1 1982 Receptor mechanisms for opiate induced respiratory depression and analgesia (tail-flick) were studied by the ED50 ratios and the apparent pA2 values of the interactions of naloxone with the mu-agonists morphine and D-ala2-me-phe4-met (O)ol5-enkephalin (FK-33824), and the delta-agonists D-ala2-D-leu5-enkephalin (DADL) and tyr-D-ser-gly-phe-leu-thr. Opiate Alkaloids 24-30 proenkephalin Rattus norvegicus 301-311 6292626-1 1982 By treating the rat crude synaptosomal fraction with 5,5"-dithio-bis-(2-nitrobenzoic acid), DTNB, a marked decrease of stereo-specific binding of opioid agonist (dihydromorphine or D-Ala-D-Leu-enkephalin) was observed, but there was no effect in the case of the binding of opioid antagonist (naloxone or diprenorphine). Dithionitrobenzoic Acid 53-90 proenkephalin Rattus norvegicus 193-203 6292626-1 1982 By treating the rat crude synaptosomal fraction with 5,5"-dithio-bis-(2-nitrobenzoic acid), DTNB, a marked decrease of stereo-specific binding of opioid agonist (dihydromorphine or D-Ala-D-Leu-enkephalin) was observed, but there was no effect in the case of the binding of opioid antagonist (naloxone or diprenorphine). Dithionitrobenzoic Acid 92-96 proenkephalin Rattus norvegicus 193-203 6292632-4 1982 Conversely, beta-endorphin inhibited the binding of a series of 3H-labeled ligands, including dihydromorphine, ethylketocyclazocine, SKF 10,047, naloxone and D-ala2-D-leu5-enkephalin, far less potently than their corresponding unlabeled drug. Tritium 64-66 proenkephalin Rattus norvegicus 172-182 6756941-1 1982 The effect of thiorphan, an inhibitor of enkephalin dipeptidyl carboxypeptidase, was tested in the rat tail-flick test. Thiorphan 14-23 proenkephalin Rattus norvegicus 41-51 6756941-3 1982 However, thiorphan (30 mg/kg, s.c.) potentiated intraventricularly administered [D-Ala2,Met5]enkephalinamide (DEAEM) and its [Leu5]-derivative, whereas it had no effect on [D-Ala2,Met5]enkephalin, [D-Met2,Pro5]enkephalinamide, or morphine. Thiorphan 9-18 proenkephalin Rattus norvegicus 93-103 6752616-0 1982 Tolerance and cross tolerance to morphine after chronic spinal D-Ala2-D-Leu5-enkephalin infusion. Morphine 33-41 proenkephalin Rattus norvegicus 77-87 6289161-0 1982 In vitro and in vivo inhibition by lithium of enkephalin binding to opiate receptors in rat brain. Lithium 35-42 proenkephalin Rattus norvegicus 46-56 6286904-6 1982 Visualization of [3H]naloxone- or [3H]enkephalin-labeled opiate receptor distributions in rat and human brains is achieved by tritium-sensitive film or by classical "wet" emulsion autoradiography. Tritium 126-133 proenkephalin Rattus norvegicus 38-48 7128684-5 1982 On the other hand, a tetrodotoxin resistant response to ENK, transient relaxation, appeared at day 20 and was augmented thereafter. Tetrodotoxin 21-33 proenkephalin Rattus norvegicus 56-59 6289161-2 1982 In vitro, lithium ions inhibited enkephalin binding to opiate receptors through a reduction in the number of binding sites, whereas the affinity was unchanged or only slightly decreased. Lithium 10-17 proenkephalin Rattus norvegicus 33-43 6289161-3 1982 In vivo, long term ingestion of lithium (3 weeks), during which the rats were maintained at a serum lithium level of approximately 1 mM, also inhibited enkephalin binding to rat neuronal membranes (P2-fractions) through a reduction of the number of opiate receptor binding sites, whereas the affinity was unchanged. Lithium 32-39 proenkephalin Rattus norvegicus 152-162 6289161-3 1982 In vivo, long term ingestion of lithium (3 weeks), during which the rats were maintained at a serum lithium level of approximately 1 mM, also inhibited enkephalin binding to rat neuronal membranes (P2-fractions) through a reduction of the number of opiate receptor binding sites, whereas the affinity was unchanged. Lithium 100-107 proenkephalin Rattus norvegicus 152-162 6289161-6 1982 This data suggest that administration of lithium to rats in small doses reduces opiate receptor binding of enkephalin. Lithium 41-48 proenkephalin Rattus norvegicus 107-117 6287134-4 1982 These results suggest a possible role of dynorphin, in addition to beta-endorphin and Met5-enkephalin, in the control of LH release in male rats. Luteinizing Hormone 121-123 proenkephalin Rattus norvegicus 91-101 6288414-9 1982 Similarly unilateral administration of Des-tyr-endorphin (100 pg) resulted in a blood pressure increase and [D-Ala2,Met5]enkephalin produced a dose-related pressor response and tachycardia. des-tyr-endorphin 39-56 proenkephalin Rattus norvegicus 121-131 7108125-1 1982 Presented here are procedural modifications which permit the utilization of 125I-labeled Met-enkephalin as substrate in the assay of rat brain enkephalin aminopeptidase. Iodine-125 76-80 proenkephalin Rattus norvegicus 93-103 7108125-1 1982 Presented here are procedural modifications which permit the utilization of 125I-labeled Met-enkephalin as substrate in the assay of rat brain enkephalin aminopeptidase. Iodine-125 76-80 proenkephalin Rattus norvegicus 143-153 7108125-2 1982 Th hydrolysis of enkephalin is monitored by the release of [125I]tyrosine separated on Porapak Q. Tyrosine 65-73 proenkephalin Rattus norvegicus 17-27 6177523-0 1982 Local electrographic effects of leu-enkephalin microinjections into the brain. Leucine 32-35 proenkephalin Rattus norvegicus 36-46 7173110-0 1982 Involvement of brain dopamine in prolactin secretion induced by a synthetic Met5-enkephalin analogue in rats. Dopamine 21-29 proenkephalin Rattus norvegicus 81-91 6124860-1 1982 The effects of nineteen AHPA* derivatives were examined on morphine analgesia by tail-flick test in rats and on enkephalinase inhibition which was based on the formation of tyrosyl-glycyl-glycine from met-enkephalin. tyrosyl-glycyl-glycine 173-195 proenkephalin Rattus norvegicus 112-122 7115528-1 1982 A study was made of the effect of a synthetic enkephalin analog and cimetidinee on experimental duodenal ulcer in rats induced by cysteamine administration. Cysteamine 130-140 proenkephalin Rattus norvegicus 46-56 6281605-1 1982 Mechanisms elucidated with enkephalin-tyrosine-o-sulfate and morphine congeners. tyrosine O-sulfate 38-56 proenkephalin Rattus norvegicus 27-37 7110115-0 1982 Morphine allosterically modulates the binding of [3H]leucine enkephalin to a particulate fraction of rat brain. Morphine 0-8 proenkephalin Rattus norvegicus 61-71 7110115-3 1982 In contrast, Scatchard analysis of the binding of [3H]leucine enkephalin in the absence and presence of 10, 50, and 100 nM morphine demonstrated that these concentrations of morphine decreased the number of binding sites by 23%, 32%, and 42%, respectively, with no change in the KD. Tritium 51-54 proenkephalin Rattus norvegicus 62-72 7110115-3 1982 In contrast, Scatchard analysis of the binding of [3H]leucine enkephalin in the absence and presence of 10, 50, and 100 nM morphine demonstrated that these concentrations of morphine decreased the number of binding sites by 23%, 32%, and 42%, respectively, with no change in the KD. Morphine 174-182 proenkephalin Rattus norvegicus 62-72 6287305-3 1982 Furthermore, the potency of [D-Ala2,D-Leu5]-enkephalin to inhibit [3H]-diprenorphine and [3H]-ethylketazocine binding increased in the presence of Ca2+, whereas an increase in potency of [D-Ala2,D-Leu5]-enkephalin to inhibit binding of mu-receptor ligands was not observed. 3h]-diprenorphine 67-84 proenkephalin Rattus norvegicus 44-54 7110115-6 1982 The noncompetitive inhibition by morphine of [3H]leucine enkephalin binding was shown to be rapidly reversible, ruling out pseudoirreversible binding of morphine to the enkephalin binding site as the underlying mechanism. Morphine 33-41 proenkephalin Rattus norvegicus 57-67 6287305-3 1982 Furthermore, the potency of [D-Ala2,D-Leu5]-enkephalin to inhibit [3H]-diprenorphine and [3H]-ethylketazocine binding increased in the presence of Ca2+, whereas an increase in potency of [D-Ala2,D-Leu5]-enkephalin to inhibit binding of mu-receptor ligands was not observed. [3h]-ethylketazocine 89-109 proenkephalin Rattus norvegicus 44-54 7110115-7 1982 Computer analysis of the displacement [3H]leucine enkephalin binding by various concentrations of morphine has demonstrated that an allosteric model, not a two-site model, best describes the observed data. Tritium 39-41 proenkephalin Rattus norvegicus 50-60 6287305-5 1982 However, in saturation binding studies, performed in diencephalic membranes, in which [D-Ala2,D-Leu5]-enkephalin binds predominantly to mu-receptors, Ca2+ also increased the binding affinity of [3H]- [D-Ala2,D-Leu5]-enkephalin. Tritium 195-197 proenkephalin Rattus norvegicus 102-112 6287305-5 1982 However, in saturation binding studies, performed in diencephalic membranes, in which [D-Ala2,D-Leu5]-enkephalin binds predominantly to mu-receptors, Ca2+ also increased the binding affinity of [3H]- [D-Ala2,D-Leu5]-enkephalin. Tritium 195-197 proenkephalin Rattus norvegicus 216-226 7110115-7 1982 Computer analysis of the displacement [3H]leucine enkephalin binding by various concentrations of morphine has demonstrated that an allosteric model, not a two-site model, best describes the observed data. Morphine 98-106 proenkephalin Rattus norvegicus 50-60 7110115-8 1982 We conclude that at low concentration morphine binds to a receptor not labeled by [3H]leucine enkephalin and by doing so allosterically induces an apparent loss of enkephalin receptors. Morphine 38-46 proenkephalin Rattus norvegicus 94-104 7110115-8 1982 We conclude that at low concentration morphine binds to a receptor not labeled by [3H]leucine enkephalin and by doing so allosterically induces an apparent loss of enkephalin receptors. Morphine 38-46 proenkephalin Rattus norvegicus 164-174 6287305-6 1982 Double reciprocal analysis suggested a mixed competitive-noncompetitive type of inhibition of [D-Ala2,D-Leu5]-enkephalin binding by dihydromorphine. Dihydromorphine 132-147 proenkephalin Rattus norvegicus 110-120 6891276-2 1982 Intraperitoneal administration of beta-endorphin, leucine-, methionine- and [des-Tyr1] methionine-enkephalin 5 min prior to a 50-trial training session of shuttle avoidance conditioning in rats depressed avoidance performance both in the training session and in a retention test carried out after 24 h. All four peptides therefore depress both acquisition and retention of shuttle avoidance behavior. [des-tyr1] methionine 76-97 proenkephalin Rattus norvegicus 98-108 6280806-4 1982 Moreover, both morphine and naloxone were equally active in competing for [3H]Met-Enk binding in all 3 brain regions during the first month after birth, whereas methionine-enkephalin was only about 30-50% as active as morphine n competing for [3H]naloxone binding in that period. Morphine 15-23 proenkephalin Rattus norvegicus 82-85 6280806-4 1982 Moreover, both morphine and naloxone were equally active in competing for [3H]Met-Enk binding in all 3 brain regions during the first month after birth, whereas methionine-enkephalin was only about 30-50% as active as morphine n competing for [3H]naloxone binding in that period. Naloxone 28-36 proenkephalin Rattus norvegicus 82-85 6803482-1 1982 The intraventricular injection of 25 micrograms of Methionine-Enkephalin (Met-Enk) induces a significant increase of serum LH levels in long-term ovariectomized rats 15, 30 and 60 min following administration. Luteinizing Hormone 123-125 proenkephalin Rattus norvegicus 62-65 6280806-4 1982 Moreover, both morphine and naloxone were equally active in competing for [3H]Met-Enk binding in all 3 brain regions during the first month after birth, whereas methionine-enkephalin was only about 30-50% as active as morphine n competing for [3H]naloxone binding in that period. Tritium 75-77 proenkephalin Rattus norvegicus 82-85 7047177-0 1982 Effects of thiorphan on the antinociceptive actions of intrathecal [D-Ala2,Met5] enkephalin. Thiorphan 11-20 proenkephalin Rattus norvegicus 81-91 7047177-2 1982 Administrations of these doses of thiorphan concurrently or up to 1 h prior to the intrathecal administration of [D-Ala2, Met5] enkephalin resulted in a dose dependent, leftward shift in the peptide dose response curve. Thiorphan 34-43 proenkephalin Rattus norvegicus 128-138 7047177-4 1982 The potentiated effects of [D-Ala2,Met5] enkephalin were totally antagonized by systemically administered naloxone. Naloxone 106-114 proenkephalin Rattus norvegicus 41-51 6803482-2 1982 The synthetic Met-Enk agonistic analogue [D-Ala2] methionine-Enkephalinamide ([D-Ala2]Met-Enk) also enhances significantly serum LH levels at 30 and 60 min; under the same experimental conditions neither Met-Enk nor [D-Ala2]Met-Enk modifies serum levels of FSH following intraventricular injections into ovariectomized animals. Luteinizing Hormone 129-131 proenkephalin Rattus norvegicus 18-21 6803482-2 1982 The synthetic Met-Enk agonistic analogue [D-Ala2] methionine-Enkephalinamide ([D-Ala2]Met-Enk) also enhances significantly serum LH levels at 30 and 60 min; under the same experimental conditions neither Met-Enk nor [D-Ala2]Met-Enk modifies serum levels of FSH following intraventricular injections into ovariectomized animals. Luteinizing Hormone 129-131 proenkephalin Rattus norvegicus 61-64 6803482-2 1982 The synthetic Met-Enk agonistic analogue [D-Ala2] methionine-Enkephalinamide ([D-Ala2]Met-Enk) also enhances significantly serum LH levels at 30 and 60 min; under the same experimental conditions neither Met-Enk nor [D-Ala2]Met-Enk modifies serum levels of FSH following intraventricular injections into ovariectomized animals. Luteinizing Hormone 129-131 proenkephalin Rattus norvegicus 61-64 6803482-2 1982 The synthetic Met-Enk agonistic analogue [D-Ala2] methionine-Enkephalinamide ([D-Ala2]Met-Enk) also enhances significantly serum LH levels at 30 and 60 min; under the same experimental conditions neither Met-Enk nor [D-Ala2]Met-Enk modifies serum levels of FSH following intraventricular injections into ovariectomized animals. Luteinizing Hormone 129-131 proenkephalin Rattus norvegicus 61-64 6288588-4 1982 In addition, the extension of the chain length of the Met-ekephalin segment to the COOH-terminal glutamic acid modified the binding of the NH2-terminal sequence to the enkephalin receptor. Glutamic Acid 97-110 proenkephalin Rattus norvegicus 168-178 7056220-1 1982 The long-acting synthetic enkephalin FK 33-824 (FK) potently inhibits LH secretion in gonadectomized prepubertal male and female rats. Luteinizing Hormone 70-72 proenkephalin Rattus norvegicus 26-36 6122185-2 1982 Furthermore, this kappa site was selectively protected, from inactivation with high concentrations of N-ethylmaleimide, by the kappa agonists ethylketazocine and (-)-alpha-(1R,5R,9R)-5,9-dimethyl-2-(L-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan (MR-2034) but not by morphine or (D-ala2-D-leu5)-enkephalin. Ethylmaleimide 102-118 proenkephalin Rattus norvegicus 299-309 6122185-2 1982 Furthermore, this kappa site was selectively protected, from inactivation with high concentrations of N-ethylmaleimide, by the kappa agonists ethylketazocine and (-)-alpha-(1R,5R,9R)-5,9-dimethyl-2-(L-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan (MR-2034) but not by morphine or (D-ala2-D-leu5)-enkephalin. Ethylketocyclazocine 142-157 proenkephalin Rattus norvegicus 299-309 6122185-2 1982 Furthermore, this kappa site was selectively protected, from inactivation with high concentrations of N-ethylmaleimide, by the kappa agonists ethylketazocine and (-)-alpha-(1R,5R,9R)-5,9-dimethyl-2-(L-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan (MR-2034) but not by morphine or (D-ala2-D-leu5)-enkephalin. (-)-alpha-(1r,5r,9r)-5,9-dimethyl-2-(l-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan 162-249 proenkephalin Rattus norvegicus 299-309 6122185-2 1982 Furthermore, this kappa site was selectively protected, from inactivation with high concentrations of N-ethylmaleimide, by the kappa agonists ethylketazocine and (-)-alpha-(1R,5R,9R)-5,9-dimethyl-2-(L-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan (MR-2034) but not by morphine or (D-ala2-D-leu5)-enkephalin. MR 2034 251-258 proenkephalin Rattus norvegicus 299-309 6122185-2 1982 Furthermore, this kappa site was selectively protected, from inactivation with high concentrations of N-ethylmaleimide, by the kappa agonists ethylketazocine and (-)-alpha-(1R,5R,9R)-5,9-dimethyl-2-(L-tetrahydrofurfuryl)-2"-hydroxy-6,7-benzo morphan (MR-2034) but not by morphine or (D-ala2-D-leu5)-enkephalin. Morphine 271-279 proenkephalin Rattus norvegicus 299-309 6278358-1 1982 D-Fenfluramine, an anorectic that releases serotonin (5-HT), repeatedly injected in rats (15 mg/kg per day) enhanced the met5-enkephalin and beta-endorphin content of the hyhpothalamus. Dexfenfluramine 0-14 proenkephalin Rattus norvegicus 126-136 7108539-5 1982 Acid acetone extraction of rat striatum followed by Sephadex G-50 chromatography and reverse-phase high pressure liquid chromatography showed that essentially all immunoreactivity co-chromatographed with Met-enkephalin[Arg6,Phe7]. acid acetone 0-12 proenkephalin Rattus norvegicus 208-218 6278358-1 1982 D-Fenfluramine, an anorectic that releases serotonin (5-HT), repeatedly injected in rats (15 mg/kg per day) enhanced the met5-enkephalin and beta-endorphin content of the hyhpothalamus. Serotonin 54-58 proenkephalin Rattus norvegicus 126-136 6278358-4 1982 A transient, small, increase in striatal met-enkephalin content was also induced by repeated D-fenfluramine injections; however the met-enkephalin content of frontal cortex, hippocampus and brainstem was not affected. Dexfenfluramine 93-107 proenkephalin Rattus norvegicus 45-55 6280202-0 1982 D-Ala2,D-Leu5-enkephalin generalizes to a discriminative stimulus produced by fentanyl but not ethylketocyclazocine. Fentanyl 78-86 proenkephalin Rattus norvegicus 14-24 6751033-0 1982 Inhibition of enkephalin degrading enzymes by metal chelating reagents. Metals 46-51 proenkephalin Rattus norvegicus 14-24 6275961-5 1982 The most potent opioid peptide in inducing the MC and electrocortical (ECoG) epileptic pattern was the delta opiate receptor agonist [D-Ala2,D-Leu5]-enkephalin (DADL). Methylcholanthrene 47-49 proenkephalin Rattus norvegicus 149-159 6751033-1 1982 The N-phosphorylated dipeptide K2PO3-Leu-Phe (P-Leu-Phe) and the mercaptoacetylated dipeptides SHCH2CO-Leu-Phe and SHCH2CO-Phe-Leu are potent inhibitors of the enkephalin carboxydipeptidase (enkephalinase) activity from rat striatal synaptosomal membranes; IC50, 0.3 nM, 15 nM, and 70 nM, respectively. dipeptide k2po3-leu-phe 21-44 proenkephalin Rattus norvegicus 160-170 6751033-2 1982 These metal chelating compounds also inhibit the enkephalin degrading aminopeptidase activity present in the soluble fraction of rat striatum, although higher concentrations of inhibitors are needed; IC50, 100 microM, 80 microM and 150 microM, respectively. Metals 6-11 proenkephalin Rattus norvegicus 49-59 6751033-3 1982 The binding of Leu-enkephalin (Leu-Enk) to rat striatal synaptosomal membranes is enhanced when the enkephalinase activity or the aminopeptidase activity present in these membranes is inhibited. Leucine 15-18 proenkephalin Rattus norvegicus 19-29 7074991-0 1982 Altered methionine enkephalin immunoreactivity in cerebral nuclei of spontaneously hypertensive rats. Methionine 8-18 proenkephalin Rattus norvegicus 19-29 6751033-3 1982 The binding of Leu-enkephalin (Leu-Enk) to rat striatal synaptosomal membranes is enhanced when the enkephalinase activity or the aminopeptidase activity present in these membranes is inhibited. Leucine 15-18 proenkephalin Rattus norvegicus 35-38 7074991-1 1982 In young SHR, methionine enkephalin-like immunoreactivity (ME) levels were lower than WKY in the tractus spinalis n. trigemini, n. reticularis lateralis, n. arcuatus and n. corporis mamillaris lateralis, whereas higher in the n. dorsalis n. vagi, n. amygdaloideus medialis and n. striae terminalis. Methionine 14-24 proenkephalin Rattus norvegicus 25-35 6751033-5 1982 Similarly, the inhibition of these activities in rat striatal slices, using either puromycin or secobarbital which inhibit the aminopeptidase and enkephalinase, respectively, increases the amount of enkephalin recovered following K+ depolarization by about 100 percent. Puromycin 83-92 proenkephalin Rattus norvegicus 146-156 7074991-1 1982 In young SHR, methionine enkephalin-like immunoreactivity (ME) levels were lower than WKY in the tractus spinalis n. trigemini, n. reticularis lateralis, n. arcuatus and n. corporis mamillaris lateralis, whereas higher in the n. dorsalis n. vagi, n. amygdaloideus medialis and n. striae terminalis. methionylglutamic acid 59-61 proenkephalin Rattus norvegicus 25-35 6751033-6 1982 P-Leu-Phe at 1 mM, a concentration which inhibits both enzymatic activities, increased the amount of enkephalin recovered by 10-fold. p-leu-phe 0-9 proenkephalin Rattus norvegicus 101-111 6751033-7 1982 The intracerebroventricular administration of 60 micrograms P-Leu-Phe with 200 micrograms of Leu-Enk induced analgesia in 4 out of 5 rats while Leu-Enk alone was not effective. Leucine 62-65 proenkephalin Rattus norvegicus 97-100 6751033-7 1982 The intracerebroventricular administration of 60 micrograms P-Leu-Phe with 200 micrograms of Leu-Enk induced analgesia in 4 out of 5 rats while Leu-Enk alone was not effective. Leucine 93-96 proenkephalin Rattus norvegicus 97-100 7202129-3 1982 Serum testosterone (T) levels displayed an inverse relationship with the met-enk rhythm; high concentrations during the day were associated with low met-enk levels and as T levels decreased to a nadir at 23.30-00.30 h, the met-enk in the MBH and AHPOA attained peak concentrations. Testosterone 6-18 proenkephalin Rattus norvegicus 77-80 6286542-3 1982 The enzyme effects indicated the occurrence of a heptapeptide (Tyr-Gly-Gly-Phe-Met/Leu-Arg-Phe) that contains both the enkephalin and the Molluscan neuropeptide sequence. leucylarginine 83-90 proenkephalin Rattus norvegicus 119-129 6286542-3 1982 The enzyme effects indicated the occurrence of a heptapeptide (Tyr-Gly-Gly-Phe-Met/Leu-Arg-Phe) that contains both the enkephalin and the Molluscan neuropeptide sequence. Phenylalanine 75-78 proenkephalin Rattus norvegicus 119-129 6288583-3 1982 [delta Ala2, Leu5]-enkephalin has been prepared and shown to be more active than the parent saturated enkephalin in a binding assay using rat brain membranes and [3H]dihydromorphine as a tracer. [delta ala2, 0-12 proenkephalin Rattus norvegicus 19-29 6288583-3 1982 [delta Ala2, Leu5]-enkephalin has been prepared and shown to be more active than the parent saturated enkephalin in a binding assay using rat brain membranes and [3H]dihydromorphine as a tracer. [delta ala2, 0-12 proenkephalin Rattus norvegicus 102-112 6288583-3 1982 [delta Ala2, Leu5]-enkephalin has been prepared and shown to be more active than the parent saturated enkephalin in a binding assay using rat brain membranes and [3H]dihydromorphine as a tracer. Tritium 163-165 proenkephalin Rattus norvegicus 19-29 6288583-3 1982 [delta Ala2, Leu5]-enkephalin has been prepared and shown to be more active than the parent saturated enkephalin in a binding assay using rat brain membranes and [3H]dihydromorphine as a tracer. Dihydromorphine 166-181 proenkephalin Rattus norvegicus 19-29 6288583-4 1982 In a comparison of potencies against [3H]dihydromorphine and [3H]-[D-Ala2, D-Leu5]-enkephalin as tracers, [delta Ala2, Leu5]-enkephalin showed preference for micro opiate receptors, possibly due to the hydrophobicity of the delta Ala2 residue. [3h]dihydromorphine 37-56 proenkephalin Rattus norvegicus 125-135 6176906-6 1982 Substance P and cholecystokinin fibres formed dense plexuses in the medial nucleus whilst the greatest concentration of vasoactive intestinal polypeptide, neurotensin and methionine enkephalin fibres were seen in the central nucleus. Methionine 171-181 proenkephalin Rattus norvegicus 182-192 6272937-4 1981 Intracerebroventricular administration of D-alanine methionine enkephalin, bombesin and calcitonin significantly suppressed the muscimol-induced gastric acid secretion. Muscimol 128-136 proenkephalin Rattus norvegicus 63-73 6172180-1 1981 The distributions of neurotensin and opiate receptors within the dorsal horn of the rat spinal cord were studied with quantitative autoradiographic techniques and compared with the immunohistochemical localizations of neurotensin and methionine-enkephalin-like immunoreactivity in this region. Methionine 234-244 proenkephalin Rattus norvegicus 245-255 6170377-1 1981 1 Morphine and related synthetic surrogates as well as beta-endorphin and methionine enkephalin caused a contractile response of the longitudinal musculature of the terminal colon of Long Evans rats.2 The muscular contraction caused by the narcotic analgesics exhibited stereospecificity, with levorphanol being about 50 times more potent than dextrorphan and (-)-methadone 4 times more potent than (+)-methadone. Levorphanol 294-305 proenkephalin Rattus norvegicus 85-95 6101080-3 1981 With normorphine the loss of agonist activity was greatest at days 12-16, while with D-Met2,Pro5-enkephalinamide it was greatest at days 16-30. beta-Endorphin also was less effective in adult than 30-day preparations, but methionine enkephalin was ineffective at all ages. d-met2, 85-92 proenkephalin Rattus norvegicus 97-107 6275285-2 1981 Dehydration of rats by 5 days enforced inhibition of a 2% solution of NaCl resulted in a significant decrease in the levels of ir-DYN, ir-1-ENK and ir-VP, but not in those of ir-beta-END in the neurointermediate lobe of the pituitary. Sodium Chloride 70-74 proenkephalin Rattus norvegicus 140-143 6275285-3 1981 In contrast, substitution of drinking water by a solution containing 20 microgram/ml dexamethasone for 5 days produced a significant increase in the neurointermediate pituitary content of ir-DYN, ir-1-ENK and ir-VP, whereas levels of ir-beta-END remained unaffected. Water 38-43 proenkephalin Rattus norvegicus 201-204 6275285-3 1981 In contrast, substitution of drinking water by a solution containing 20 microgram/ml dexamethasone for 5 days produced a significant increase in the neurointermediate pituitary content of ir-DYN, ir-1-ENK and ir-VP, whereas levels of ir-beta-END remained unaffected. Dexamethasone 85-98 proenkephalin Rattus norvegicus 201-204 6170377-1 1981 1 Morphine and related synthetic surrogates as well as beta-endorphin and methionine enkephalin caused a contractile response of the longitudinal musculature of the terminal colon of Long Evans rats.2 The muscular contraction caused by the narcotic analgesics exhibited stereospecificity, with levorphanol being about 50 times more potent than dextrorphan and (-)-methadone 4 times more potent than (+)-methadone. Dextrorphan 344-355 proenkephalin Rattus norvegicus 85-95 6170377-1 1981 1 Morphine and related synthetic surrogates as well as beta-endorphin and methionine enkephalin caused a contractile response of the longitudinal musculature of the terminal colon of Long Evans rats.2 The muscular contraction caused by the narcotic analgesics exhibited stereospecificity, with levorphanol being about 50 times more potent than dextrorphan and (-)-methadone 4 times more potent than (+)-methadone. Methadone 360-373 proenkephalin Rattus norvegicus 85-95 6170377-1 1981 1 Morphine and related synthetic surrogates as well as beta-endorphin and methionine enkephalin caused a contractile response of the longitudinal musculature of the terminal colon of Long Evans rats.2 The muscular contraction caused by the narcotic analgesics exhibited stereospecificity, with levorphanol being about 50 times more potent than dextrorphan and (-)-methadone 4 times more potent than (+)-methadone. Methadone 399-412 proenkephalin Rattus norvegicus 85-95 6272946-9 1981 The delayed appearance of the [3H]enkephalin-labeled receptors may reflect the dependence of the peptide binding on later developing molecules of adenylate cyclase. Tritium 31-33 proenkephalin Rattus norvegicus 34-44 6947303-5 1981 D-Ala Methionine Enkephalin failed to alter the suppressive effects of PGF2 alpha and PGE2 at a dose of 1 microgram but successfully reversed the effect of PGF2 alpha at a 10 micrograms dose while still having no effect on PGE2 suppression of feeding. Dinoprost 156-160 proenkephalin Rattus norvegicus 17-27 7288632-0 1981 Morphine-like action of enkephalin analog FK 33-824 on motility of the isolated rat colon. Morphine 0-8 proenkephalin Rattus norvegicus 24-34 7291041-2 1981 Purified enzyme was devoid of contamination of tryptic-like enzymes, by dipeptidyl carboxypeptidase (angiotensin converting enzyme) and of enkephalinnases cleaving the Tyr-Gly and Gly-Phe bonds of Met-enkephalin. Tyr-Gly 168-175 proenkephalin Rattus norvegicus 139-149 7285858-0 1981 Possible involvement of gamma-aminobutyric acid in growth hormone release induced by a Met5-enkephalin analog in conscious rats. gamma-Aminobutyric Acid 24-47 proenkephalin Rattus norvegicus 92-102 6270660-1 1981 The simultaneous addition of [D-Ala2, D-Leu5]-enkephalin and morphiceptin at concentrations at which 98% of enkephalin (delta) and morphine (mu) receptors are occupied only partially inhibits the binding of [3H]diprenorphine to rat brain membranes. [3H]Diprenorphine 207-224 proenkephalin Rattus norvegicus 46-56 7272599-0 1981 The effects of morphine and methionine-enkephalin on the release of purines from cerebral cortex slices of rats and mice. Purines 68-75 proenkephalin Rattus norvegicus 39-49 6272275-3 1981 In the presence of Mn2+ (3 mM) or other divalent cations, however, Na+ and GTP at 25 degrees C caused an increase in D-Enk binding at the expense of H2morphine binding at striatal opiate receptor patches. Guanosine Triphosphate 75-78 proenkephalin Rattus norvegicus 119-122 7291041-2 1981 Purified enzyme was devoid of contamination of tryptic-like enzymes, by dipeptidyl carboxypeptidase (angiotensin converting enzyme) and of enkephalinnases cleaving the Tyr-Gly and Gly-Phe bonds of Met-enkephalin. Glycine 172-175 proenkephalin Rattus norvegicus 139-149 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). [3H]-diprenorphine 4-22 proenkephalin Rattus norvegicus 92-102 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). Benzomorphans 138-150 proenkephalin Rattus norvegicus 92-102 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). 6,7-Benzomorphan 183-199 proenkephalin Rattus norvegicus 92-102 7291041-2 1981 Purified enzyme was devoid of contamination of tryptic-like enzymes, by dipeptidyl carboxypeptidase (angiotensin converting enzyme) and of enkephalinnases cleaving the Tyr-Gly and Gly-Phe bonds of Met-enkephalin. Phenylalanine 184-187 proenkephalin Rattus norvegicus 139-149 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). Cyclazocine 207-218 proenkephalin Rattus norvegicus 92-102 7291041-4 1981 Subsequent amino acid analysis identified these as Phe, Met-enkephalin-Arg6, and Met-enkephalin, indicating cleavage at the Arg6-Phe7 and Met5-Phe6 bonds. Methionine 56-59 proenkephalin Rattus norvegicus 60-70 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). Ethylketocyclazocine 220-240 proenkephalin Rattus norvegicus 92-102 7291043-0 1981 Cholecystokinin and enkephalin levels following ethanol administration in rats. Ethanol 48-55 proenkephalin Rattus norvegicus 20-30 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). SK and F 10047 242-251 proenkephalin Rattus norvegicus 92-102 7015510-1 1981 Methionine enkephalin release was evoked by depolarization of slices from rat striatum with potassium. Potassium 92-101 proenkephalin Rattus norvegicus 11-21 6270660-4 1981 The [3H]-diprenorphine binding observed in the presence of morphiceptin and [D-Ala2, D-Leu5]enkephalin exhibits high affinity for several benzomorphan drugs in the chemical family of 6,7-benzomorphan (e.g., cyclazocine, ethylketocyclazocine, SKF 10047, UM 1072, oxilorphan, etc). oxilorphan 262-272 proenkephalin Rattus norvegicus 92-102 7272282-3 1981 It was shown that the enzyme activities resulting in hydrolysis of the tyrosine residue of ([3,5-3H2]Tyr)Met-enkephalin and formation of beta-naphthylamine from Tyr-beta-naphthylamide copurified. Tyrosine 71-79 proenkephalin Rattus norvegicus 109-119 7272282-3 1981 It was shown that the enzyme activities resulting in hydrolysis of the tyrosine residue of ([3,5-3H2]Tyr)Met-enkephalin and formation of beta-naphthylamine from Tyr-beta-naphthylamide copurified. 2-Naphthylamine 137-155 proenkephalin Rattus norvegicus 109-119 7272282-3 1981 It was shown that the enzyme activities resulting in hydrolysis of the tyrosine residue of ([3,5-3H2]Tyr)Met-enkephalin and formation of beta-naphthylamine from Tyr-beta-naphthylamide copurified. tyr-beta-naphthylamide 161-183 proenkephalin Rattus norvegicus 109-119 7272282-5 1981 Hydrolysis of Met-enkephalin yielded the products L-tyrosine and the tetrapeptide Gly-Gly-Phe-Met. Tyrosine 50-60 proenkephalin Rattus norvegicus 18-28 7272282-5 1981 Hydrolysis of Met-enkephalin yielded the products L-tyrosine and the tetrapeptide Gly-Gly-Phe-Met. gly-gly-phe-met 82-97 proenkephalin Rattus norvegicus 18-28 7272282-8 1981 The enkephalin-degrading enzyme had a pH optimum of 6.5-7.0 and exhibited maximal activity at 40 degrees C. Enzyme activity was inhibited by metal chelators, and it was found that 1 mol of Zn2+ was associated with 1 mol of enzyme (102000 Mr). Metals 141-146 proenkephalin Rattus norvegicus 4-14 7272282-8 1981 The enkephalin-degrading enzyme had a pH optimum of 6.5-7.0 and exhibited maximal activity at 40 degrees C. Enzyme activity was inhibited by metal chelators, and it was found that 1 mol of Zn2+ was associated with 1 mol of enzyme (102000 Mr). Zinc 189-193 proenkephalin Rattus norvegicus 4-14 7266940-3 1981 Local perfusion with veratrine also enhanced enkephalin release. Veratrine 21-30 proenkephalin Rattus norvegicus 45-55 6266515-1 1981 FK-33-824 (Try-D-Ala-Gly-MePhe-Met(O)ol) is a potent enkephalin analog which has been tritium labelled with a high specific radioactivity (41 Ci/mmole). try-d-ala-gly-mephe-met(o)ol 11-39 proenkephalin Rattus norvegicus 53-63 6266515-1 1981 FK-33-824 (Try-D-Ala-Gly-MePhe-Met(O)ol) is a potent enkephalin analog which has been tritium labelled with a high specific radioactivity (41 Ci/mmole). Tritium 86-93 proenkephalin Rattus norvegicus 53-63 7021390-0 1981 Effect of glucose and arginine on L-enkephalin secretion of the isolated perfused rat pancreas. Arginine 22-30 proenkephalin Rattus norvegicus 36-46 6274643-4 1981 Whereas morphine, beta-endorphin and D-Ala2-Met5-enkephalin-amide depress respiratory rates in 2-day old rats at doses equal to or lower than those active in 14-day old rats, morphine"s analgesic ED50 is 40-fold greater in 2-day old than in 14-day old rats. Amides 60-65 proenkephalin Rattus norvegicus 49-59 6274645-1 1981 The binding characteristics of two highly potent analgesic enkephalin analogs, [D-Thr2, Thz5]-and [D-Met2, Thz5]-enkephalinamide, to the rat brain membrane preparation have been investigated using tritiated Leu-enkephalin, human beta-endorphin or dihydromorphine as the primary ligand. [d-thr2 79-86 proenkephalin Rattus norvegicus 59-69 6274645-1 1981 The binding characteristics of two highly potent analgesic enkephalin analogs, [D-Thr2, Thz5]-and [D-Met2, Thz5]-enkephalinamide, to the rat brain membrane preparation have been investigated using tritiated Leu-enkephalin, human beta-endorphin or dihydromorphine as the primary ligand. thz5 88-92 proenkephalin Rattus norvegicus 59-69 6274645-1 1981 The binding characteristics of two highly potent analgesic enkephalin analogs, [D-Thr2, Thz5]-and [D-Met2, Thz5]-enkephalinamide, to the rat brain membrane preparation have been investigated using tritiated Leu-enkephalin, human beta-endorphin or dihydromorphine as the primary ligand. [d-met2, thz5]-enkephalinamide 98-128 proenkephalin Rattus norvegicus 59-69 6274645-2 1981 Concentrations for 50% inhibiting activity of the enkephalin analogs are much lower in displacing tritiated dihydromorphine in comparison with that for the other two tritiated ligands. Dihydromorphine 108-123 proenkephalin Rattus norvegicus 50-60 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. mephe4 32-38 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. met(0)-ol 40-49 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. Damme 51-56 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. Glucose 119-126 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. alpha-ketoisocaproic acid 212-233 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. Glyburide 303-316 proenkephalin Rattus norvegicus 4-14 6790327-3 1981 The enkephalin analogue D-ala2, MePhe4, Met(0)-ol (DAMME), 8.3 X 10(-8) mol/l, augmented insulin release stimulated by glucose (5 or 7 mmol/l) by 76% and 47% respectively; increased insulin release stimulated by alpha-ketoisocaproate (7.5 mmol/l) by 23%; and enhanced insulin release in the presence of glibenclamide (10 microgram/ml) plus glucose (3.3 mmol/l) by 38%. Glucose 340-347 proenkephalin Rattus norvegicus 4-14 6265839-0 1981 Effects of bromocriptine on receptor binding of methionine-enkephalin. Bromocriptine 11-24 proenkephalin Rattus norvegicus 48-69 6265839-1 1981 Bromocriptine inhibited the binding of methionine-enkephalin (ENK) to rat striatal synaptic membranes in a dose-dependent fashion. Bromocriptine 0-13 proenkephalin Rattus norvegicus 39-60 6265839-1 1981 Bromocriptine inhibited the binding of methionine-enkephalin (ENK) to rat striatal synaptic membranes in a dose-dependent fashion. Bromocriptine 0-13 proenkephalin Rattus norvegicus 62-65 6265839-3 1981 hill coefficients of bromocriptine were 0.7 and 0.3, suggesting that an allosteric effect was involved in bromocriptine inhibition of ENK binding to its receptor. Bromocriptine 21-34 proenkephalin Rattus norvegicus 134-137 6265839-3 1981 hill coefficients of bromocriptine were 0.7 and 0.3, suggesting that an allosteric effect was involved in bromocriptine inhibition of ENK binding to its receptor. Bromocriptine 106-119 proenkephalin Rattus norvegicus 134-137 6265839-4 1981 These data suggest that at least a part of the therapeutic antiparkinsonian effect f bromocriptine is its allosteric effects on the ENK receptor, which influences the function of striatal dopamine neurons and/or of striatal cholinergic neurons. Bromocriptine 85-98 proenkephalin Rattus norvegicus 132-135 6265839-4 1981 These data suggest that at least a part of the therapeutic antiparkinsonian effect f bromocriptine is its allosteric effects on the ENK receptor, which influences the function of striatal dopamine neurons and/or of striatal cholinergic neurons. Dopamine 188-196 proenkephalin Rattus norvegicus 132-135 7015510-2 1981 In the presence of 0.1 microM thiorphan [(N(R,S)-3-mercapto-2-benzylpropionyl)glycine], a potent inhibitor of enkephalin dipeptidyl carboxypeptidase (enkephalinase), the recovery of the pentapeptide in the incubation medium was increased by about 100 percent. Thiorphan 30-39 proenkephalin Rattus norvegicus 110-120 7015510-2 1981 In the presence of 0.1 microM thiorphan [(N(R,S)-3-mercapto-2-benzylpropionyl)glycine], a potent inhibitor of enkephalin dipeptidyl carboxypeptidase (enkephalinase), the recovery of the pentapeptide in the incubation medium was increased by about 100 percent. (n(r,s)-3-mercapto-2-benzylpropionyl)glycine 41-85 proenkephalin Rattus norvegicus 110-120 7215429-1 1981 The opioid activities of enkephalin analogues bearing D- or L-aminopentane-sulfonic/phosphonic acid at position 5 were studied in vitro, in electrically stimulated longitudinal muscle strip of guinea-pig ileum and mouse vas deferens preparations and in vivo in the rat tail-flick test. d- or l-aminopentane-sulfonic/phosphonic acid 54-99 proenkephalin Rattus norvegicus 25-35 7194992-0 1981 Retrograde amnesia caused by Met-, Leu- and des-Try-Met-enkephalin in the rat and its reversal by naloxone. Naloxone 98-106 proenkephalin Rattus norvegicus 56-66 6265125-0 1981 The effects of GABA-ergic drugs on enkephalin-induced motor seizure phenomena in the rat. gamma-Aminobutyric Acid 15-19 proenkephalin Rattus norvegicus 35-45 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 25-35 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. gamma-Aminobutyric Acid 100-104 proenkephalin Rattus norvegicus 25-35 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. Muscimol 120-128 proenkephalin Rattus norvegicus 25-35 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. gabaculine 130-140 proenkephalin Rattus norvegicus 25-35 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. Baclofen 145-153 proenkephalin Rattus norvegicus 25-35 6265125-4 1981 GABA-ergic drugs altered enkephalin-induced myoclonic contractions in the following manner: (a) The GABA-mimetic drugs, muscimol, gabaculine and baclofen, decreased DALA-induced myoclonic contractions. Aminolevulinic Acid 165-169 proenkephalin Rattus norvegicus 25-35 6265125-8 1981 The modulatory effect of the GABA-mimetic drug on enkephalin-induced myoclonic contractions may give grounds for further study to test the possible use of other GABA-mimetic drugs and possibly opiate antagonists for the treatment of myoclonic syndromes. gamma-Aminobutyric Acid 29-33 proenkephalin Rattus norvegicus 50-60 6265125-8 1981 The modulatory effect of the GABA-mimetic drug on enkephalin-induced myoclonic contractions may give grounds for further study to test the possible use of other GABA-mimetic drugs and possibly opiate antagonists for the treatment of myoclonic syndromes. gamma-Aminobutyric Acid 161-165 proenkephalin Rattus norvegicus 50-60 6257675-1 1981 The synthesis and characterization of a novel enkephalin analogue, Tyr-D-Ala-Gly-Phe-Leu-chloromethyl ketone, is described. tyrosyl-alanyl-glycyl-phenylalanyl-leucine chloromethyl ketone 67-108 proenkephalin Rattus norvegicus 46-56 6258708-3 1981 Whereas the selective delta-receptor agonist [3H]D-Ala2,D-Leu5-enkephalin specifically labelled binding sites in the CA2 area, [3H]etorphine grains displayed a uniform dense distribution throughout the pyramidal cell layers from CA1 to CA4. Tritium 46-48 proenkephalin Rattus norvegicus 63-73 7242868-0 1981 Methionine enkephalin-induced shaking behavior in rats: dissociation from brain serotonin mechanisms. Methionine 0-10 proenkephalin Rattus norvegicus 11-21 7194719-3 1981 The suppressive effect of histidyl-proline diketopiperazine was antagonized by the enkephalin analogue, D-Ala-Met-enkephalin, in equimolar concentrations. histidyl-proline diketopiperazine 26-59 proenkephalin Rattus norvegicus 83-93 7194719-3 1981 The suppressive effect of histidyl-proline diketopiperazine was antagonized by the enkephalin analogue, D-Ala-Met-enkephalin, in equimolar concentrations. histidyl-proline diketopiperazine 26-59 proenkephalin Rattus norvegicus 114-124 6163796-6 1981 Like the catecholamine synthesizing enzymes TH and DBH, enkephalin-like immunoreactivity was localized to perikarya, proximal processes and varicose axon terminals within the area postrema and the adjacent mNTS. Catecholamines 9-22 proenkephalin Rattus norvegicus 56-66 7463074-1 1981 Using antisera specific for methionine- and leucine-enkephalin, we studied the characteristics of the release of these peptides from rat striatal slices. Leucine 44-51 proenkephalin Rattus norvegicus 52-62 7463074-2 1981 Only 2-3% of the total tissue stores of enkephalin could be released by potassium-depolarization; similar percentages were released from globus pallidus, thalamus, and nucleus accumbens. Potassium 72-81 proenkephalin Rattus norvegicus 40-50 7012516-0 1981 Inhibition of enkephalin-degrading enzymes from rat brain and of thermolysin by amino acid hydroxamates. amino acid hydroxamates 80-103 proenkephalin Rattus norvegicus 14-24 7215429-3 1981 Correlating the in vitro activities with the analgesic activity in vivo it is concluded that the enkephalin-like character in a pentapetide may hinder the expression of analgesic activity, when the compounds are given into the cerebroventricular system. pentapetide 128-139 proenkephalin Rattus norvegicus 97-107 6264453-5 1981 The purified receptor binds 10(-11) mol of dihydromorphine/per mg of protein, with a Kd of 3.8 X 10(-9) M. Other opiates, naloxone, and methionine-enkephalin, inhibit [3H]dihydromorphine binding in a manner similar to that observed with intact and solubilized neural membranes. Dihydromorphine 43-58 proenkephalin Rattus norvegicus 147-157 6112776-1 1981 In fetal rat brain, immunocytochemical localization of tyrosine hydroxylase and methionine (Met5)-enkephalin demonstrates that dopaminergic axons labeled with the biosynthetic enzyme can be detected in th neostriatum prior to the appearance of the peptide in neuronal perikarya. methionine (met5) 80-97 proenkephalin Rattus norvegicus 98-108 7009170-1 1981 Hydrolysis of ([3H]Leu5)-enkephalin into the tripeptide [3H]Tyr-Gly-Gly can be detected using particulate fractions from a variety of peripheral organs. tripeptide [3h]tyr-gly-gly 45-71 proenkephalin Rattus norvegicus 25-35 6109621-7 1981 The most active analog to date, Tyr-D-Trp-Ala-Trp-D-Phe-NH2, was shown to release GH in vitro at 10-30 ng/ml medium, which is approximately 10(3) times more active than the two starting enkephalin-based analogs. Tyr-D-Trp-Ala-Trp-D-Phe-NH2 32-59 proenkephalin Rattus norvegicus 186-196 6191322-5 1981 It is suggested that methionine enkephalin and/or beta-endorphin and Substance P regulate release of acetylcholine or hormones from placental villus. Acetylcholine 101-114 proenkephalin Rattus norvegicus 32-42 6791229-3 1981 In the present study the food intake of freely-feeding rats was increased by subcutaneous injections of morphine, a stabilised enkephalin and analogue (RX 783030), and ethylketocyclazocine. Morphine 104-112 proenkephalin Rattus norvegicus 127-137 6258678-4 1980 3 Pretreatment of the vasa with morphine antagonized the inhibition of the neuromuscular transmission caused by either beta-endorphin or enkephalin. Morphine 32-40 proenkephalin Rattus norvegicus 137-147 7470729-4 1980 of the substance and sensitivity to naloxone reversal appeared to be similar to enkephalin, but it was resistant to carboxypeptidase-A and protease treatment.7 It is concluded that the enkephalin content of the hypothalamus is affected by activity in the hypothalamus-pituitary-adrenal system but that it is not related in a simple manner to the levels of corticotrophin releasing hormone, corticotrophin or corticosteroids. Naloxone 36-44 proenkephalin Rattus norvegicus 185-195 6261242-1 1980 A conformationally restricted analog of [Leu5]enkephalin was synthesized by cyclization of the COOH-terminal carboxyl group of leucine to the gamma-amino moiety of alpha, gamma-diaminobutyric acid (A2bu) substituted in position 2 of the peptide. carboxyl 109-117 proenkephalin Rattus norvegicus 46-56 6261242-1 1980 A conformationally restricted analog of [Leu5]enkephalin was synthesized by cyclization of the COOH-terminal carboxyl group of leucine to the gamma-amino moiety of alpha, gamma-diaminobutyric acid (A2bu) substituted in position 2 of the peptide. Leucine 127-134 proenkephalin Rattus norvegicus 46-56 6256520-8 1980 Methionine enkephalin-like immunoreactivity was not clearly detectable in rat retina but was present in toad retina. Methionine 0-10 proenkephalin Rattus norvegicus 11-21 6261242-1 1980 A conformationally restricted analog of [Leu5]enkephalin was synthesized by cyclization of the COOH-terminal carboxyl group of leucine to the gamma-amino moiety of alpha, gamma-diaminobutyric acid (A2bu) substituted in position 2 of the peptide. 2,4-diaminobutyric acid 164-196 proenkephalin Rattus norvegicus 46-56 6261242-1 1980 A conformationally restricted analog of [Leu5]enkephalin was synthesized by cyclization of the COOH-terminal carboxyl group of leucine to the gamma-amino moiety of alpha, gamma-diaminobutyric acid (A2bu) substituted in position 2 of the peptide. a2bu 198-202 proenkephalin Rattus norvegicus 46-56 6261242-2 1980 Relative to [Leu5]enkephalin, the cyclic analog with D configuration in position 2, H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-), was 17.5 times more potent in the guinea pig ileum assay and twice as potent in the rat brain receptor binding assay, whereas its diastereomer H-Tyr-cyclo(-N gamma-L-A2bu-Gly-Phe-Leu-) showed low activity. h-tyr-cyclo 84-95 proenkephalin Rattus norvegicus 18-28 6261242-2 1980 Relative to [Leu5]enkephalin, the cyclic analog with D configuration in position 2, H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-), was 17.5 times more potent in the guinea pig ileum assay and twice as potent in the rat brain receptor binding assay, whereas its diastereomer H-Tyr-cyclo(-N gamma-L-A2bu-Gly-Phe-Leu-) showed low activity. -a2bu 106-111 proenkephalin Rattus norvegicus 18-28 6261242-2 1980 Relative to [Leu5]enkephalin, the cyclic analog with D configuration in position 2, H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-), was 17.5 times more potent in the guinea pig ileum assay and twice as potent in the rat brain receptor binding assay, whereas its diastereomer H-Tyr-cyclo(-N gamma-L-A2bu-Gly-Phe-Leu-) showed low activity. h-tyr-cyclo 270-281 proenkephalin Rattus norvegicus 18-28 6261242-2 1980 Relative to [Leu5]enkephalin, the cyclic analog with D configuration in position 2, H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-), was 17.5 times more potent in the guinea pig ileum assay and twice as potent in the rat brain receptor binding assay, whereas its diastereomer H-Tyr-cyclo(-N gamma-L-A2bu-Gly-Phe-Leu-) showed low activity. phenylalanylleucine 116-123 proenkephalin Rattus norvegicus 18-28 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. h-tyr-cyclo 37-48 proenkephalin Rattus norvegicus 175-185 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. h-tyr-cyclo 37-48 proenkephalin Rattus norvegicus 296-306 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. Glycine 65-68 proenkephalin Rattus norvegicus 175-185 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. Glycine 65-68 proenkephalin Rattus norvegicus 296-306 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. Phenylalanine 69-72 proenkephalin Rattus norvegicus 175-185 6261242-4 1980 The steric constraints introduced in H-Tyr-cyclo(-N gamma-D-A2bu-Gly-Phe-Leu-) were shown to prevent the realization of most of the conformational features ascribed to linear enkephalin in solution or in the crystalline state and permitted an assessment of proposed models of the conformation of enkephalin when it is bound to the receptor. Phenylalanine 69-72 proenkephalin Rattus norvegicus 296-306 6255483-2 1980 Morphine-like (mu) receptors, labeled by 125I-labeled [D-Ala-2MePhe4Met(O)5-ol]enkephalin, are concentrated selectively in lamina IV of the cerebral cortex, certain thalamic nuclei, and the periaqueductal grey, while delta receptors, labeled by 125I-labeled [D-Ala2-D-Leu5]enkephalin, are more diffused, having high densities in cerebral cortex, corpus striatum, amygdala, and olfactory tubercle. Morphine 0-8 proenkephalin Rattus norvegicus 79-89 6255483-2 1980 Morphine-like (mu) receptors, labeled by 125I-labeled [D-Ala-2MePhe4Met(O)5-ol]enkephalin, are concentrated selectively in lamina IV of the cerebral cortex, certain thalamic nuclei, and the periaqueductal grey, while delta receptors, labeled by 125I-labeled [D-Ala2-D-Leu5]enkephalin, are more diffused, having high densities in cerebral cortex, corpus striatum, amygdala, and olfactory tubercle. Morphine 0-8 proenkephalin Rattus norvegicus 273-283 6255483-2 1980 Morphine-like (mu) receptors, labeled by 125I-labeled [D-Ala-2MePhe4Met(O)5-ol]enkephalin, are concentrated selectively in lamina IV of the cerebral cortex, certain thalamic nuclei, and the periaqueductal grey, while delta receptors, labeled by 125I-labeled [D-Ala2-D-Leu5]enkephalin, are more diffused, having high densities in cerebral cortex, corpus striatum, amygdala, and olfactory tubercle. Iodine-125 41-45 proenkephalin Rattus norvegicus 79-89 6255483-2 1980 Morphine-like (mu) receptors, labeled by 125I-labeled [D-Ala-2MePhe4Met(O)5-ol]enkephalin, are concentrated selectively in lamina IV of the cerebral cortex, certain thalamic nuclei, and the periaqueductal grey, while delta receptors, labeled by 125I-labeled [D-Ala2-D-Leu5]enkephalin, are more diffused, having high densities in cerebral cortex, corpus striatum, amygdala, and olfactory tubercle. (o)5-ol 71-78 proenkephalin Rattus norvegicus 79-89 6908965-1 1980 A sensitive and specific radioimmunoassay (RIA) for the oxidised form of methionine(5)-enkephalin (Met(5)-Enk), Met(5)-Enk sulphoxide (Met(5)-Enk-S), has been developed. methionine(5)-enkephalin 73-97 proenkephalin Rattus norvegicus 106-109 6908965-11 1980 The results indicate that spontaneous oxidation of Met(5)-Enk immunogen occurs such that antisera are produced against the sulphoxide analogue of Met(5)-Enk, and may account for the relative insensitivity of some published RIAs using Met(5)-Enk standard. sulfoxide 123-133 proenkephalin Rattus norvegicus 58-61 6256025-1 1980 Stereospecific binding of apomorphine to rat brain opiate receptors was shown by assaying the competition of 7,8(n)--3H--naloxone and D-ala2-tyrosyl-3,5-3H--enkephalin (5-D-leucine) for opiate receptor binding. Apomorphine 26-37 proenkephalin Rattus norvegicus 157-167 6908965-11 1980 The results indicate that spontaneous oxidation of Met(5)-Enk immunogen occurs such that antisera are produced against the sulphoxide analogue of Met(5)-Enk, and may account for the relative insensitivity of some published RIAs using Met(5)-Enk standard. sulfoxide 123-133 proenkephalin Rattus norvegicus 153-156 6256025-2 1980 EC-NaCl50, the concentration of apomorphine which inhibited 50% binding of the radioactive naloxone and D-ala2, D-leu5-enkephalin in the absence of NaCl were 20 and 42 microM, respectively. ec-nacl50 0-9 proenkephalin Rattus norvegicus 119-129 6908965-11 1980 The results indicate that spontaneous oxidation of Met(5)-Enk immunogen occurs such that antisera are produced against the sulphoxide analogue of Met(5)-Enk, and may account for the relative insensitivity of some published RIAs using Met(5)-Enk standard. sulfoxide 123-133 proenkephalin Rattus norvegicus 153-156 6256025-2 1980 EC-NaCl50, the concentration of apomorphine which inhibited 50% binding of the radioactive naloxone and D-ala2, D-leu5-enkephalin in the absence of NaCl were 20 and 42 microM, respectively. Apomorphine 32-43 proenkephalin Rattus norvegicus 119-129 7232228-5 1980 Mydriasis also occurred after leu-enkephalin (5 and 10 mg/kg, IP) and met-enkephalin (20 mg/kg, IP) Both peptides induced morphine-like fluctuations. Morphine 122-130 proenkephalin Rattus norvegicus 74-84 6256025-5 1980 From the data obtained it is concluded that apomorphine, like naloxone, is a "pure" antagonist but it has much less affinity for enkephalin and opiate binding sites. Apomorphine 44-55 proenkephalin Rattus norvegicus 129-139 7232228-6 1980 When given 15 min after morphine, leu-enkephalin (5 and 10 mg/kg) increased the mydriatic effect of morphine from 172 percent of control to 224 and 272 percent, respectively. Morphine 24-32 proenkephalin Rattus norvegicus 38-48 7232228-6 1980 When given 15 min after morphine, leu-enkephalin (5 and 10 mg/kg) increased the mydriatic effect of morphine from 172 percent of control to 224 and 272 percent, respectively. Morphine 100-108 proenkephalin Rattus norvegicus 38-48 6265978-2 1980 Iontophoretically applied morphine, methionine enkephalin or beta-endorphin inhibited the spontaneous or glutamate-activated firing of the great majority of single neurons in medial and lateral septum, amygdala and cingulate cortex. Glutamic Acid 105-114 proenkephalin Rattus norvegicus 47-57 7232228-7 1980 Met-enkephalin (20 mg/kg, but not 10 mg/kg) also enhanced the mydriatic response of morphine, to 244 percent of control. Morphine 84-92 proenkephalin Rattus norvegicus 4-14 7455665-5 1980 (iii) Cycloheximide, the protein-synthesis inhibitor, reduces the enkephalin-increasing effect of acupuncture, indicating that one of the mechanisms by which acupuncture elevates the enkephalin levels is the acceleration of biosynthesis. Cycloheximide 6-19 proenkephalin Rattus norvegicus 66-76 7412501-0 1980 Reduced ability of naloxone to stimulate LH and testosterone release in aging male rats; possible relation to increase in hypothalamic met5-enkephalin. Naloxone 19-27 proenkephalin Rattus norvegicus 140-150 6106904-0 1980 Actions of enkephalin, mu and partial agonist analgesics on acetylcholine turnover in rat brain. Acetylcholine 60-73 proenkephalin Rattus norvegicus 11-21 7455665-5 1980 (iii) Cycloheximide, the protein-synthesis inhibitor, reduces the enkephalin-increasing effect of acupuncture, indicating that one of the mechanisms by which acupuncture elevates the enkephalin levels is the acceleration of biosynthesis. Cycloheximide 6-19 proenkephalin Rattus norvegicus 183-193 6998819-1 1980 The direct effects of an enkephalin analogue, (D-Ala2/MePhe4/Met/(O)-o1) enkephalin (DAMME), on insulin release from isolated islets of Langerhans of the rat have been investigated. mephe4 54-60 proenkephalin Rattus norvegicus 25-35 6248174-0 1980 A topographic localization of enkephalin on the dopamine neurons of the rat substantia nigra and ventral tegmental area demonstrated by combined histofluorescence-immunocytochemistry. Dopamine 48-56 proenkephalin Rattus norvegicus 30-40 6261902-1 1980 The development profiles of [3H]methionine-enkephalin ([3H]Met-enk) binding sites and radioimmunoassayable (RIA) beta-endorphin in regions of rat brain were determined. Tritium 29-31 proenkephalin Rattus norvegicus 43-53 6261902-1 1980 The development profiles of [3H]methionine-enkephalin ([3H]Met-enk) binding sites and radioimmunoassayable (RIA) beta-endorphin in regions of rat brain were determined. Tritium 29-31 proenkephalin Rattus norvegicus 43-46 6261902-2 1980 The amount [3H]Met-enk bound reached its maximum in the 1st week after birth in the cerebellum, in the brainstem at the 2nd week, and in the whole forebrain at the 3rd week, that of RIA beta-endorphin reached its highest level at day 2 postpartum (p.p.) Tritium 12-14 proenkephalin Rattus norvegicus 19-22 6261902-2 1980 The amount [3H]Met-enk bound reached its maximum in the 1st week after birth in the cerebellum, in the brainstem at the 2nd week, and in the whole forebrain at the 3rd week, that of RIA beta-endorphin reached its highest level at day 2 postpartum (p.p.) ria beta-endorphin 182-200 proenkephalin Rattus norvegicus 19-22 6261902-7 1980 These findings suggest that both the development of RIA beta-endorphin and [3H]met-enk sites in rat brain follow a caudal to rostral sequence. Tritium 76-78 proenkephalin Rattus norvegicus 83-86 6261902-8 1980 Also, the close interrelationship between the elevation and decline in the amount of [3H]Met-enk bound and RIA beta-endorphin levels in each brain region suggests that these two components are important entities of the central nervous system. Tritium 86-88 proenkephalin Rattus norvegicus 93-96 7408961-3 1980 The response of guinea-pig duodenum to ENK was either relaxation or pulsatile contractions depending on the dose and was abolished by tetrodotoxin. Tetrodotoxin 134-146 proenkephalin Rattus norvegicus 39-42 6998819-1 1980 The direct effects of an enkephalin analogue, (D-Ala2/MePhe4/Met/(O)-o1) enkephalin (DAMME), on insulin release from isolated islets of Langerhans of the rat have been investigated. Methionine 61-64 proenkephalin Rattus norvegicus 25-35 6998819-1 1980 The direct effects of an enkephalin analogue, (D-Ala2/MePhe4/Met/(O)-o1) enkephalin (DAMME), on insulin release from isolated islets of Langerhans of the rat have been investigated. Methionine 61-64 proenkephalin Rattus norvegicus 73-83 6998819-5 1980 The effects of enkephalin and morphine were blocked by the specific opiate antagonist naloxone hydrochloride (1.2 X 10(-6) mol/l). Naloxone 86-108 proenkephalin Rattus norvegicus 15-25 7388600-4 1980 Similar alterations in firing patterns were observed with enkephalin analogues, an effect which was blocked by the opiate antagonist, naloxone. Opiate Alkaloids 115-121 proenkephalin Rattus norvegicus 58-68 6108365-7 1980 Met-enkephalin inhibited histamine- but not pentagastrin-stimulated secretion. Histamine 25-34 proenkephalin Rattus norvegicus 4-14 7378834-13 1980 These data extend the report of ventricular methionine-enkephalin positive reinforcement to DALA injected directly into the lateral hypothalamus. Methionine 44-54 proenkephalin Rattus norvegicus 55-65 7388600-4 1980 Similar alterations in firing patterns were observed with enkephalin analogues, an effect which was blocked by the opiate antagonist, naloxone. Naloxone 134-142 proenkephalin Rattus norvegicus 58-68 7398785-6 1980 If methionine-enkephalin was added directly to a membrane fraction a marked inhibition of incorporation of phosphate into the 50K band was observed. Phosphates 107-116 proenkephalin Rattus norvegicus 14-24 7399623-8 1980 D-alanine-enkephalin (D-Ala-ENK) attenuated the vagal component of the baroreceptor reflex in cats. d-ala-enk 22-31 proenkephalin Rattus norvegicus 10-20 6102598-0 1980 Catecholamine modulation of enkephalin-induced electrophysiological responses in cerebral cortex. Catecholamines 0-13 proenkephalin Rattus norvegicus 28-38 7389818-0 1980 Release of methionine-enkephalin immunoreactivity from the rat spinal cord in vivo. Methionine 11-21 proenkephalin Rattus norvegicus 22-32 7389818-2 1980 Radioimmunoassay for methionine-enkephalin-like activity revealed that the basal levels of release were on the order of 0.4 ng/ml/10 min. Methionine 21-31 proenkephalin Rattus norvegicus 32-42 6247008-1 1980 Discrete localization of enkephalin immunoreactive sites in the rat forebrain was undertaken using animals with and without colchicine pretreatment. Colchicine 124-134 proenkephalin Rattus norvegicus 25-35 7363859-2 1980 Morphine and the opioid peptides [D-Ala2, D-Leu5]enkephalin and beta-endorphin have also been shown to decrease dopamine (DA) release by nerve terminals in the median eminence. Dopamine 112-120 proenkephalin Rattus norvegicus 49-59 7363859-2 1980 Morphine and the opioid peptides [D-Ala2, D-Leu5]enkephalin and beta-endorphin have also been shown to decrease dopamine (DA) release by nerve terminals in the median eminence. Dopamine 122-124 proenkephalin Rattus norvegicus 49-59 7365695-2 1980 Morphine and metenkephalin produced one of the three following patterns of effects on single units in the mesencephalic reticular formation: 1) morphine but not met-enkephalin blocked evoked firing; 2) met-enkephalin but not morphine blocked evoked firing; and 3) both morphine and met-enkephalin blocked evoked firing. Morphine 144-152 proenkephalin Rattus norvegicus 16-26 7365695-2 1980 Morphine and metenkephalin produced one of the three following patterns of effects on single units in the mesencephalic reticular formation: 1) morphine but not met-enkephalin blocked evoked firing; 2) met-enkephalin but not morphine blocked evoked firing; and 3) both morphine and met-enkephalin blocked evoked firing. Morphine 225-233 proenkephalin Rattus norvegicus 16-26 7365695-2 1980 Morphine and metenkephalin produced one of the three following patterns of effects on single units in the mesencephalic reticular formation: 1) morphine but not met-enkephalin blocked evoked firing; 2) met-enkephalin but not morphine blocked evoked firing; and 3) both morphine and met-enkephalin blocked evoked firing. Morphine 225-233 proenkephalin Rattus norvegicus 16-26 6102598-2 1980 Parenteral administration of antipsychotic agents known to block catecholamines receptors, such as spiroperidol, alpha-flupenthixol and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions. Spiperone 99-111 proenkephalin Rattus norvegicus 175-185 6102598-2 1980 Parenteral administration of antipsychotic agents known to block catecholamines receptors, such as spiroperidol, alpha-flupenthixol and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions. Flupenthixol 113-131 proenkephalin Rattus norvegicus 175-185 6102598-2 1980 Parenteral administration of antipsychotic agents known to block catecholamines receptors, such as spiroperidol, alpha-flupenthixol and (+)-butaclamol, reversibly antagonized enkephalin-induced depressions. Butaclamol 136-150 proenkephalin Rattus norvegicus 175-185 6991553-5 1980 Immunohistochemical localization of methionine enkephalin fibers and terminals in the median eminence, hypophyseal stalk, and pars nervosa was similar, but not identical to the distribution of vasopressin and oxytocin in these structures. Methionine 36-46 proenkephalin Rattus norvegicus 47-57 6244503-3 1980 The results of the present studies support this hypothesis, as we find that a stable enkephalin analogue (D-Ala 2,D-Leu5-enkephalin) inhibits the calcium-dependent release of vasopressin evoked by electrical stimulation of the rat pituitary stalk in vitro. Calcium 146-153 proenkephalin Rattus norvegicus 85-95 6245752-1 1980 The ontogenesis of opiate receptors in several brain regions of the developing rat was measured by specific binding of [3H]methionine-enkephalin ([3H]Met). Tritium 120-122 proenkephalin Rattus norvegicus 134-144 6245752-1 1980 The ontogenesis of opiate receptors in several brain regions of the developing rat was measured by specific binding of [3H]methionine-enkephalin ([3H]Met). Tritium 147-149 proenkephalin Rattus norvegicus 134-144 6247000-5 1980 The alpha-adrenoceptor antagonist phentolamine, in contrast, caused an increase of the maximal response to met-enkephalin of up to 200%. Phentolamine 34-46 proenkephalin Rattus norvegicus 111-121 6244503-3 1980 The results of the present studies support this hypothesis, as we find that a stable enkephalin analogue (D-Ala 2,D-Leu5-enkephalin) inhibits the calcium-dependent release of vasopressin evoked by electrical stimulation of the rat pituitary stalk in vitro. Calcium 146-153 proenkephalin Rattus norvegicus 121-131 6244503-4 1980 A similar inhibition of the stimulus-evoked vasopressin release is caused by morphine and beta-endorphin, and the inhibitory effects of the enkephalin analogue can be reversed by naloxone. Naloxone 179-187 proenkephalin Rattus norvegicus 140-150 6999070-2 1980 One of the main degradation products generated during the incubation of enkephalin with rat striatal membranes, the N-terminal amino acid Tyr, is absorbed quantitatively on the copper--Chelex columns whereas the minor, but probably specific, product Tyr--Gly--Gly is not. amino acid tyr 127-141 proenkephalin Rattus norvegicus 72-82 6999070-2 1980 One of the main degradation products generated during the incubation of enkephalin with rat striatal membranes, the N-terminal amino acid Tyr, is absorbed quantitatively on the copper--Chelex columns whereas the minor, but probably specific, product Tyr--Gly--Gly is not. Copper 177-183 proenkephalin Rattus norvegicus 72-82 6999070-2 1980 One of the main degradation products generated during the incubation of enkephalin with rat striatal membranes, the N-terminal amino acid Tyr, is absorbed quantitatively on the copper--Chelex columns whereas the minor, but probably specific, product Tyr--Gly--Gly is not. tyrosyl-glycyl-glycine 250-263 proenkephalin Rattus norvegicus 72-82 6991553-7 1980 In cats treated with colchicine prior to sacrifice, the anti-methionine enkephalin serum revealed a group of periventricular cell bodies. Colchicine 21-31 proenkephalin Rattus norvegicus 72-82 7353158-4 1980 Active enkephalin derivatives produced a dose-dependent naloxone-reversible excitation in both preparations whereas inactive enkephalin derivatives had no effect. Naloxone 56-64 proenkephalin Rattus norvegicus 7-17 7353158-9 1980 Finally, enkephalin responses are mimicked by picrotoxin, which selectively antagonizes inhibitory input to the pyramidal neuron. Picrotoxin 46-56 proenkephalin Rattus norvegicus 9-19 6153545-7 1980 Somatostatin, vasoactive intestinal polypeptide, caerulein and the enkephalin-analogue FK 33-824 were ineffective in doses 100 fold higher.6 The results indicate that the action of capsaicin on substance P neurones is restricted to primary sensory neurones. Capsaicin 181-190 proenkephalin Rattus norvegicus 67-77 6153550-0 1980 Redistribution of endorphin and enkephalin immunoreactivity in the rat brain and pituitary after in vivo treatment with colchicine or cytochalasin B. Colchicine 120-130 proenkephalin Rattus norvegicus 32-42 6153550-0 1980 Redistribution of endorphin and enkephalin immunoreactivity in the rat brain and pituitary after in vivo treatment with colchicine or cytochalasin B. Cytochalasin B 134-148 proenkephalin Rattus norvegicus 32-42 6244551-0 1980 Selective protection of stereospecific enkephalin and opiate binding against inactivation by N-ethylmaleimide: evidence for two classes of opiate receptors. Ethylmaleimide 93-109 proenkephalin Rattus norvegicus 39-49 6892802-2 1980 Prior administration of leu-enkelphalin at a dose which had no analgesic effect was found to reduce significantly the analgesic ED50 of both morphine and met-enkephalin. leu-enkelphalin 24-39 proenkephalin Rattus norvegicus 158-168 7470737-0 1980 Investigation of action of enkephalin on the spontaneous and evoked release of acetylcholine from rat cortical and striatal slices. Acetylcholine 79-92 proenkephalin Rattus norvegicus 27-37 7470737-5 1980 The enkephalin 33,824 also had no significant action on the striatal ACh release except that it caused a slight enhancement of veratridine-evoked release. Veratridine 127-138 proenkephalin Rattus norvegicus 4-14 7470755-16 1980 In rat vas, however, enkephalin analogues produced pre-junctional inhibition of responses in both portions which could be partly reversed by naloxone; restoration of the adrenergic component was more complete. Naloxone 141-149 proenkephalin Rattus norvegicus 21-31 6103516-5 1980 Increases in the evoked release (80%) and striatal enkephalin content (60%) were found in rats after chronic haloperidol administration, pointing to an increase in the synthesis and utilization of striatal enkephalin. Haloperidol 109-120 proenkephalin Rattus norvegicus 51-61 6103516-5 1980 Increases in the evoked release (80%) and striatal enkephalin content (60%) were found in rats after chronic haloperidol administration, pointing to an increase in the synthesis and utilization of striatal enkephalin. Haloperidol 109-120 proenkephalin Rattus norvegicus 206-216 6255486-5 1980 The effect of GTP and GMP-PNP on the binding of 3H-D-ala-methionine enkephalin to rat brain opiate receptors was studied. Guanosine Triphosphate 14-17 proenkephalin Rattus norvegicus 68-78 6255486-5 1980 The effect of GTP and GMP-PNP on the binding of 3H-D-ala-methionine enkephalin to rat brain opiate receptors was studied. Guanylyl Imidodiphosphate 22-29 proenkephalin Rattus norvegicus 68-78 6248844-2 1980 In this study the effects of pharmacological manipulation of 5-hydroxytryptamine (5-HT) on the antinociceptive activity of morphine and two synthetic enkephalin analogus (D-ala2-leu-enkephalin and D-ala2-met-enkephalin) were investigated in mice and rats. Serotonin 82-86 proenkephalin Rattus norvegicus 150-160 6248844-4 1980 In the reserpine-pretreated group, centrally injected 5-HT restored the antinociceptive activity of morphine and D-ala2-leu-enkephalin. Reserpine 7-16 proenkephalin Rattus norvegicus 124-134 6244551-1 1980 Stereospecific binding of 3H-labeled [D-Ala2,D-Leu5]enkephalin is irreversibly inactivated by the sulfhydryl group alkylating agent N-ethylmaleimide. Tritium 26-28 proenkephalin Rattus norvegicus 52-62 6244551-1 1980 Stereospecific binding of 3H-labeled [D-Ala2,D-Leu5]enkephalin is irreversibly inactivated by the sulfhydryl group alkylating agent N-ethylmaleimide. Ethylmaleimide 132-148 proenkephalin Rattus norvegicus 52-62 6244551-4 1980 Ouantitative studies of protection demonstrate that naltrexone and morphine are 20 and 8 times, respectively, more effective in protecting the binding of [3H]naltrexone than that of [3H]enkephalin. Morphine 67-75 proenkephalin Rattus norvegicus 186-196 6244551-5 1980 [D-Ala2,Leu]Enkephalin and [D-Ala2,Met]enkephalin, however, are more effective (7 and 30 times, respectively) for the protection of 3H-labeled [D-Ala2,D-Leu5]enkephalin binding. Tritium 132-134 proenkephalin Rattus norvegicus 12-22 6771806-1 1980 Acute ethanol administration increased methionine-enkephalin (met-enkephalin) and beta-endorphin levels in distinct areas of the rat brain, whereas chronically supplied ethanol caused a depression of met-enkephalin and beta-endorphin levels in most of the brain areas investigated. Ethanol 6-13 proenkephalin Rattus norvegicus 50-60 6244551-5 1980 [D-Ala2,Leu]Enkephalin and [D-Ala2,Met]enkephalin, however, are more effective (7 and 30 times, respectively) for the protection of 3H-labeled [D-Ala2,D-Leu5]enkephalin binding. Tritium 132-134 proenkephalin Rattus norvegicus 39-49 6771806-1 1980 Acute ethanol administration increased methionine-enkephalin (met-enkephalin) and beta-endorphin levels in distinct areas of the rat brain, whereas chronically supplied ethanol caused a depression of met-enkephalin and beta-endorphin levels in most of the brain areas investigated. Ethanol 6-13 proenkephalin Rattus norvegicus 66-76 6771806-1 1980 Acute ethanol administration increased methionine-enkephalin (met-enkephalin) and beta-endorphin levels in distinct areas of the rat brain, whereas chronically supplied ethanol caused a depression of met-enkephalin and beta-endorphin levels in most of the brain areas investigated. Ethanol 6-13 proenkephalin Rattus norvegicus 66-76 6244551-5 1980 [D-Ala2,Leu]Enkephalin and [D-Ala2,Met]enkephalin, however, are more effective (7 and 30 times, respectively) for the protection of 3H-labeled [D-Ala2,D-Leu5]enkephalin binding. Tritium 132-134 proenkephalin Rattus norvegicus 158-168 233159-0 1979 Dopamine-mediated behavior produced by the enkephalin analogue FK 33-824. Dopamine 0-8 proenkephalin Rattus norvegicus 43-53 6779307-1 1980 The self-administration of D-enkephalin was studied in the dependent rat self-administering morphine. Morphine 92-100 proenkephalin Rattus norvegicus 29-39 6779307-4 1980 Substitution of D-enkephalin either IVT (40 microgram/inj) or IV (10 mg/kg/inj) in the morphine-dependent rat maintained consistent lever pressing and self-administration behavior similar to morphine self-administration. Morphine 87-95 proenkephalin Rattus norvegicus 18-28 6779307-6 1980 However, saline substitution (0.05 ml/inj IV) for morphine in the self-administering rat produced an abstinence syndrome characterized by extinction of responding, wet-dog shakes, writhes, and diarrhea, which were reversed for 1 h by a single IVT injection of D-enkephalin (40 or 80 microgram). Sodium Chloride 9-15 proenkephalin Rattus norvegicus 262-272 6779307-6 1980 However, saline substitution (0.05 ml/inj IV) for morphine in the self-administering rat produced an abstinence syndrome characterized by extinction of responding, wet-dog shakes, writhes, and diarrhea, which were reversed for 1 h by a single IVT injection of D-enkephalin (40 or 80 microgram). Morphine 50-58 proenkephalin Rattus norvegicus 262-272 6779307-7 1980 These results indicate that D-enkephalin will serve as a reinforcer to maintain opiate-seeking behavior and support physical dependence in the rat. Opiate Alkaloids 80-86 proenkephalin Rattus norvegicus 30-40 575096-0 1979 Enkephalin levels decrease in rat striatum during morphine abstinence. Morphine 50-58 proenkephalin Rattus norvegicus 0-10 230519-3 1979 In the guinea pig ileum longitudinal muscle preparation it is about 700 times more potent than [Leu]enkephalin. Leucine 96-99 proenkephalin Rattus norvegicus 100-110 230519-4 1979 Its effects in this tissue are blocked completely by naloxone, but the apparent affinity of naloxone is 1/13th that for blockade of [Leu]enkephalin or normorphine. Naloxone 92-100 proenkephalin Rattus norvegicus 137-147 230519-5 1979 In the mouse vas deferens, this peptide is 3 times more potent than [Leu]enkephalin. Leucine 69-72 proenkephalin Rattus norvegicus 73-83 230519-8 1979 The remarkable enhancement of the potency of [Leu]enkephalin by the COOH-terminal extension -Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-OH suggests new interpretations concerning the structure of opiate receptors and the function of the enkephalin pentapeptides. Arginine 93-96 proenkephalin Rattus norvegicus 50-60 230519-8 1979 The remarkable enhancement of the potency of [Leu]enkephalin by the COOH-terminal extension -Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-OH suggests new interpretations concerning the structure of opiate receptors and the function of the enkephalin pentapeptides. Arginine 93-96 proenkephalin Rattus norvegicus 226-236 7443728-5 1980 Raising the concentration of potassium ions stimulated the release of met- and leu-enkephalin from striatal slices and the release of beta-endorphin immunoreactive material(s) from hypothalamic slices; both phenomena were dependent upon the presence of calcium ions. Potassium 29-38 proenkephalin Rattus norvegicus 83-93 7443728-11 1980 Long-term morphine treatment (30 days) decreased enkephalin and beta-endorphin content in some brain areas and in the intermediate/posterior pituitary lobe but not in the anterior lobe. Morphine 10-18 proenkephalin Rattus norvegicus 49-59 522892-0 1979 Rapid changes in enkephalin levels in rat striatum and hypothalamus induced by diazepam. Diazepam 79-87 proenkephalin Rattus norvegicus 17-27 119252-0 1979 Enkephalin-induced myoclonic twitches blocked by ergometrine and potentiated by haloperidol. Ergonovine 49-60 proenkephalin Rattus norvegicus 0-10 119252-0 1979 Enkephalin-induced myoclonic twitches blocked by ergometrine and potentiated by haloperidol. Haloperidol 80-91 proenkephalin Rattus norvegicus 0-10 119252-3 1979 The twitches induced by enkephalin were blocked by naloxone, gamma-hydroxybutyrate, and ergometrine, but potentiated by haloperidol. Naloxone 51-59 proenkephalin Rattus norvegicus 24-34 119252-3 1979 The twitches induced by enkephalin were blocked by naloxone, gamma-hydroxybutyrate, and ergometrine, but potentiated by haloperidol. Sodium Oxybate 61-82 proenkephalin Rattus norvegicus 24-34 119252-3 1979 The twitches induced by enkephalin were blocked by naloxone, gamma-hydroxybutyrate, and ergometrine, but potentiated by haloperidol. Ergonovine 88-99 proenkephalin Rattus norvegicus 24-34 119252-3 1979 The twitches induced by enkephalin were blocked by naloxone, gamma-hydroxybutyrate, and ergometrine, but potentiated by haloperidol. Haloperidol 120-131 proenkephalin Rattus norvegicus 24-34 119252-5 1979 These results were interpreted as a possibility for a specific enkephalin-induced activation of the so-called inhibition-mediating dopaminergic system, which is sensitive to the blocking action of ergometrine, but resistant to the blocking action of haloperidol. Ergonovine 197-208 proenkephalin Rattus norvegicus 63-73 119252-5 1979 These results were interpreted as a possibility for a specific enkephalin-induced activation of the so-called inhibition-mediating dopaminergic system, which is sensitive to the blocking action of ergometrine, but resistant to the blocking action of haloperidol. Haloperidol 250-261 proenkephalin Rattus norvegicus 63-73 522892-2 1979 Diazepam selectively increased the enkephalin concentrations in the hypothalamus by about 35%, and lowered it in the corpus striatum by roughly 25%; no changes could be detected in the medulla oblongata/pons or midbrain. Diazepam 0-8 proenkephalin Rattus norvegicus 35-45 522892-7 1979 Whereas an increase in enkephalin concentrations in the hypothalamus may be discussed in terms of the anti-stress effect of benzodiazepines, the observed drop in striatal enkephalin is not obviously to be correlated to behavioural changes induced by these drugs. Benzodiazepines 124-139 proenkephalin Rattus norvegicus 23-33 40808-5 1979 In the neostriatum, enkephalin immunoreactive neuronal cell bodies as well as nerve terminals disappeared after injection of ibotenic acid into this nucleus. Ibotenic Acid 125-138 proenkephalin Rattus norvegicus 20-30 522892-1 1979 The acute treatment of rats with diazepam induces pronounced changes in brain enkephalin concentrations, as was estimated for methionine(met)-enkephalin and in some representative experiments for leucine(leu)-enkephalin, employing highly specific radioimmunoassays. Diazepam 33-41 proenkephalin Rattus norvegicus 78-88 522892-1 1979 The acute treatment of rats with diazepam induces pronounced changes in brain enkephalin concentrations, as was estimated for methionine(met)-enkephalin and in some representative experiments for leucine(leu)-enkephalin, employing highly specific radioimmunoassays. Diazepam 33-41 proenkephalin Rattus norvegicus 142-152 522892-1 1979 The acute treatment of rats with diazepam induces pronounced changes in brain enkephalin concentrations, as was estimated for methionine(met)-enkephalin and in some representative experiments for leucine(leu)-enkephalin, employing highly specific radioimmunoassays. Diazepam 33-41 proenkephalin Rattus norvegicus 142-152 460727-0 1979 Enkephalin levels in rat brain after various regimens of morphine administration. Morphine 57-65 proenkephalin Rattus norvegicus 0-10 503254-0 1979 Inhibition of PGE1 induced intestinal secretion by the synthetic enkephalin analogue FK 33-824. Alprostadil 14-18 proenkephalin Rattus norvegicus 65-75 523678-4 1979 The peptidase-resistant enkephalin-analog, BW 180c, which does not cross the blood brain barrier, caused a marked analgesia by IP administration to paws made hyperalgesic by PGE2 or carrageenin. Dinoprostone 174-178 proenkephalin Rattus norvegicus 24-34 37915-2 1979 This enzyme cleaves the N-terminal tyrosine from Leu-enkephalin and hydrolyzes some beta-naphthylamides and p-nitro-anilides of neutral, basic and aromatic, but not acidic, amino acids. Tyrosine 35-43 proenkephalin Rattus norvegicus 53-63 37915-2 1979 This enzyme cleaves the N-terminal tyrosine from Leu-enkephalin and hydrolyzes some beta-naphthylamides and p-nitro-anilides of neutral, basic and aromatic, but not acidic, amino acids. 2-naphthylamide 84-103 proenkephalin Rattus norvegicus 53-63 37915-2 1979 This enzyme cleaves the N-terminal tyrosine from Leu-enkephalin and hydrolyzes some beta-naphthylamides and p-nitro-anilides of neutral, basic and aromatic, but not acidic, amino acids. p-nitro-anilides 108-124 proenkephalin Rattus norvegicus 53-63 222892-9 1979 Likewise, morphine-tolerant rats were cross-tolerant to D-enkephalin. Morphine 10-18 proenkephalin Rattus norvegicus 58-68 460727-1 1979 Rats implanted with a single morphine pellet for a short period of 72 h have been shown to have a lower concentration of enkephalin in the brain, as determined by a radioimmunoassay (RIA) detecting Leu- and Met-enkephalin as well as another endogenous substance. Morphine 29-37 proenkephalin Rattus norvegicus 121-131 460727-1 1979 Rats implanted with a single morphine pellet for a short period of 72 h have been shown to have a lower concentration of enkephalin in the brain, as determined by a radioimmunoassay (RIA) detecting Leu- and Met-enkephalin as well as another endogenous substance. Morphine 29-37 proenkephalin Rattus norvegicus 211-221 460727-1 1979 Rats implanted with a single morphine pellet for a short period of 72 h have been shown to have a lower concentration of enkephalin in the brain, as determined by a radioimmunoassay (RIA) detecting Leu- and Met-enkephalin as well as another endogenous substance. Leucine 198-201 proenkephalin Rattus norvegicus 121-131 437076-0 1979 [Effect of droperidol, aminazine and diazepam on the analgesic activity of leucine-enkephalin]. Droperidol 11-21 proenkephalin Rattus norvegicus 83-93 217503-1 1979 Enkephalin immunoreactive perikarya, fibers and nerve terminals, visualized by the indirect immunohistofluorescent method in colchicine-pretreated animals, are localized in many discrete regions of the rat brain stem. Colchicine 125-135 proenkephalin Rattus norvegicus 0-10 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Etorphine 78-87 proenkephalin Rattus norvegicus 193-203 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Etorphine 78-87 proenkephalin Rattus norvegicus 318-328 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Levorphanol 89-100 proenkephalin Rattus norvegicus 193-203 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Levorphanol 89-100 proenkephalin Rattus norvegicus 318-328 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Phenazocine 105-116 proenkephalin Rattus norvegicus 193-203 220062-2 1979 Whereas opiate antagonists, as well as the opioid peptides and some agonists (etorphine, levorphanol and phenazocine) display similar affinities in displacing either 3H-opiate or 3H-methionine enkephalin binding, other agonists (such as morphine and oxymorphone) are considerably (20-50 times) weaker in displacing 3H-enkephalin than 3H-dihydromorphine binding. Phenazocine 105-116 proenkephalin Rattus norvegicus 318-328 218682-9 1979 Although non-specific, the excitatory effects of enkephalin and morphine on hippocampal neurones were greatly reduced in morphine tolerant/dependent rats. Morphine 121-129 proenkephalin Rattus norvegicus 49-59 221899-1 1979 Covalently bound [3H]D-Ala2,Met5-enkephalinamide- and 125I-labeled D-Ala2,N-Me-Phe4,Met-(O)5-ol-enkephalin-macromolecule complexes have been prepared by crosslinking the solubilized noncovalent complexes from rat brain. Tritium 18-20 proenkephalin Rattus norvegicus 33-43 221899-1 1979 Covalently bound [3H]D-Ala2,Met5-enkephalinamide- and 125I-labeled D-Ala2,N-Me-Phe4,Met-(O)5-ol-enkephalin-macromolecule complexes have been prepared by crosslinking the solubilized noncovalent complexes from rat brain. n-me-phe4 74-83 proenkephalin Rattus norvegicus 33-43 221899-2 1979 Gel electrophoresis of the partially purified 125I-labeled enkephalin-macromolecule complex under nondenaturing conditions results in a single major/radioactive peak. Iodine-125 46-50 proenkephalin Rattus norvegicus 59-69 437076-0 1979 [Effect of droperidol, aminazine and diazepam on the analgesic activity of leucine-enkephalin]. Chlorpromazine 23-32 proenkephalin Rattus norvegicus 83-93 437076-0 1979 [Effect of droperidol, aminazine and diazepam on the analgesic activity of leucine-enkephalin]. Diazepam 37-45 proenkephalin Rattus norvegicus 83-93 437076-1 1979 In experiments on rats it was shown that the neuroleptics droperidol (0.6 mg/kg) and aminazin (10 mg/kg) can potentiate the analgetic action of the endogenous morphine-like pentapeptide leucin-enkephalin administered into the brain ventricles at a dose of 50 micrograms. Droperidol 58-68 proenkephalin Rattus norvegicus 193-203 437076-1 1979 In experiments on rats it was shown that the neuroleptics droperidol (0.6 mg/kg) and aminazin (10 mg/kg) can potentiate the analgetic action of the endogenous morphine-like pentapeptide leucin-enkephalin administered into the brain ventricles at a dose of 50 micrograms. Chlorpromazine 85-93 proenkephalin Rattus norvegicus 193-203 437076-1 1979 In experiments on rats it was shown that the neuroleptics droperidol (0.6 mg/kg) and aminazin (10 mg/kg) can potentiate the analgetic action of the endogenous morphine-like pentapeptide leucin-enkephalin administered into the brain ventricles at a dose of 50 micrograms. Morphine 159-167 proenkephalin Rattus norvegicus 193-203 437076-2 1979 A statistically significant increase in the analgetic activity lf leucin-enkephalin given at a dose of 100 micrograms was induced only by droperidol. Droperidol 138-148 proenkephalin Rattus norvegicus 73-83 437076-4 1979 Naloxon (2 mg/kg) removed the analgetic effect of leuchin-enkephalin administered both alone and after a preliminary injection od droperidol or aminazin. Naloxone 0-7 proenkephalin Rattus norvegicus 58-68 379712-3 1979 However 10(-5)--10(-5) M synthetic enkephalin analogue induced a dose-dependent inhibition of LH-RH content and release of the mediobasal hypothalamus, which was prevented by equimolar concentrations of naloxone. Naloxone 203-211 proenkephalin Rattus norvegicus 35-45 731437-0 1978 In vivo antagonism by naloxone of morphine, beta-endorphin and a synthetic enkephalin analog. Naloxone 22-30 proenkephalin Rattus norvegicus 75-85 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Morphine 0-8 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Morphine 0-8 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Morphine 0-8 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 10-19 proenkephalin Rattus norvegicus 33-43 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 10-19 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 10-19 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 10-19 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). d-met2 96-102 proenkephalin Rattus norvegicus 33-43 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). pro5-enkephalinamide 104-124 proenkephalin Rattus norvegicus 33-43 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Dopamine 187-195 proenkephalin Rattus norvegicus 33-43 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Dopamine 187-195 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Dopamine 187-195 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Dopamine 187-195 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 210-219 proenkephalin Rattus norvegicus 33-43 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 210-219 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 210-219 proenkephalin Rattus norvegicus 57-67 214205-2 1979 Morphine, etorphine, and several enkephalin analogs (met-enkephalin, D-ala2-met-enkephalin, and D-met2, pro5-enkephalinamide) were capable of inhibiting the stimulation of AC produced by dopamine (90-100% with etorphine or D-ala2-met-enkephalin). Etorphine 210-219 proenkephalin Rattus norvegicus 57-67 282060-7 1978 Propranolol treatment reduced the increases in blood pressure following intraventricular methionine-enkephalin and leucine-enkephalin, while only the methionine-enkephalin-induced increases in heart rate were reduced by propranolol. Propranolol 0-11 proenkephalin Rattus norvegicus 100-110 282060-7 1978 Propranolol treatment reduced the increases in blood pressure following intraventricular methionine-enkephalin and leucine-enkephalin, while only the methionine-enkephalin-induced increases in heart rate were reduced by propranolol. Propranolol 0-11 proenkephalin Rattus norvegicus 123-133 720481-0 1978 Effect of the administration of (d-Ala) 2methionine-enkephalin on the serotonin metabolism in rat brain. Serotonin 70-79 proenkephalin Rattus norvegicus 52-62 34108-13 1979 Physalaemin and D-Ala2-D-Met5-enkephalin enhance the binding of 125I-Tyr8-SP in a cooperative way. 125i-tyr8-sp 64-76 proenkephalin Rattus norvegicus 30-40 275866-0 1978 [Met5]Enkephalin content in brain regions of rats treated with lithium. Lithium 63-70 proenkephalin Rattus norvegicus 6-16 702326-8 1978 The EEG voltage output during morphine or D-enkephalin-induced EEG slow-wave activity was dose-dependent and was correlated with the behavioral state of the rat. Morphine 30-38 proenkephalin Rattus norvegicus 44-54 702326-10 1978 The effects of D-enkephalin and morphine were antagonized by pretreatment with naloxone (10 mg/kg s.c.). Naloxone 79-87 proenkephalin Rattus norvegicus 17-27 81768-6 1978 The endogenous opiate compound enkephalin and the synthetic analogue D-ala2-met5-encamide also induced electrocortical changes which were naloxone sensitive. Naloxone 138-146 proenkephalin Rattus norvegicus 31-41 213743-3 1978 Drugs which increase brain enkephalin content (d-phenylalanine or methionine-enkephalin) antagonized postsynaptically active agents and potentiated presynaptic agents. D-phenylalanine 47-62 proenkephalin Rattus norvegicus 27-37 733838-1 1978 Enkephalin and other brain peptides previously have been shown to be active in the dopa potentiation test which may be considered an animal model of mental depression. Dihydroxyphenylalanine 83-87 proenkephalin Rattus norvegicus 0-10 277953-4 1978 The degradation of trace amounts of synthetic [(3)H]enkephalins in the perfusing medium during stimulated release seems to reflect the accelerated degradation of enkephalin released from the tissue: 63% of the Met-enkephalin and 23% of the Leu-enkephalin were degraded in a medium containing bacitracin (30 mug/ml). Bacitracin 292-302 proenkephalin Rattus norvegicus 52-62 277953-4 1978 The degradation of trace amounts of synthetic [(3)H]enkephalins in the perfusing medium during stimulated release seems to reflect the accelerated degradation of enkephalin released from the tissue: 63% of the Met-enkephalin and 23% of the Leu-enkephalin were degraded in a medium containing bacitracin (30 mug/ml). Bacitracin 292-302 proenkephalin Rattus norvegicus 162-172 277953-4 1978 The degradation of trace amounts of synthetic [(3)H]enkephalins in the perfusing medium during stimulated release seems to reflect the accelerated degradation of enkephalin released from the tissue: 63% of the Met-enkephalin and 23% of the Leu-enkephalin were degraded in a medium containing bacitracin (30 mug/ml). Bacitracin 292-302 proenkephalin Rattus norvegicus 162-172 275866-1 1978 In rats, chronic treatment with lithium elicits a dose-dependent increase in the [Met5]enkephalin content of nucleus caudatus and globus pallidus. Lithium 32-39 proenkephalin Rattus norvegicus 87-97 647397-0 1978 Different effects of methionine-enkephalin and (D-Ala2)methionine-enkephalin amide on the metabolism of dopamine and norephinephrine in rat brain:fact or artifact? Dopamine 104-112 proenkephalin Rattus norvegicus 66-76 647397-0 1978 Different effects of methionine-enkephalin and (D-Ala2)methionine-enkephalin amide on the metabolism of dopamine and norephinephrine in rat brain:fact or artifact? norephinephrine 117-132 proenkephalin Rattus norvegicus 32-42 647397-0 1978 Different effects of methionine-enkephalin and (D-Ala2)methionine-enkephalin amide on the metabolism of dopamine and norephinephrine in rat brain:fact or artifact? norephinephrine 117-132 proenkephalin Rattus norvegicus 66-76 658122-1 1978 Methionine-enkephalin (0.2--20 microgram/rat) and leucine-enkephalin (1--20 microgram/rat) produced a dose-related and naloxone-antagonizable analgesia in the tail-pinch test, when microinjected into the nucleus reticularis gigantocellularis (NRGC) and nucleus reticularis paragigantocellularis (NRPG) of the medulla oblongata of the rat. Naloxone 119-127 proenkephalin Rattus norvegicus 11-21 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Naloxone 0-8 proenkephalin Rattus norvegicus 307-317 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Morphine 70-78 proenkephalin Rattus norvegicus 307-317 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Morphine 93-101 proenkephalin Rattus norvegicus 307-317 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Naloxone 199-207 proenkephalin Rattus norvegicus 307-317 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Morphine 93-101 proenkephalin Rattus norvegicus 307-317 206309-4 1978 Naloxone administered into the same region antagonized this action of morphine.5 Intravenous morphine also antagonized responses of dorsal horn neurones to noxious stimuli and subsequent intravenous naloxone reversed this effect.6 It was concluded that the excitatory and inhibitory effects of morphine and enkephalin on central neurones may be mediated by actions on different opiate receptors and that depression of noxious responses of dorsal horn neurones may be relevant to the analgesic action of morphine. Morphine 93-101 proenkephalin Rattus norvegicus 307-317 275866-3 1978 The increase in [Met5]enkephalin caused by chronic lithium is proportional to the serum lithium level. Lithium 51-58 proenkephalin Rattus norvegicus 22-32 275866-3 1978 The increase in [Met5]enkephalin caused by chronic lithium is proportional to the serum lithium level. Lithium 88-95 proenkephalin Rattus norvegicus 22-32 275866-7 1978 Lithium also increases striatal [Leu5]enkephalin content by an extent equal to the increase of [Met 5]enkephalin. Lithium 0-7 proenkephalin Rattus norvegicus 38-48 275866-8 1978 Based on the characteristics of the lithium-induced increase in [Met6]enkephalin content, it is proposed that lithium may reduce the rate of release of [Met5]enkephalin from the small enkephalinergic neurons that are intrinsic to the striatum; this action may be related to a change in the regulation of striatal neurons. Lithium 36-43 proenkephalin Rattus norvegicus 70-80 275866-8 1978 Based on the characteristics of the lithium-induced increase in [Met6]enkephalin content, it is proposed that lithium may reduce the rate of release of [Met5]enkephalin from the small enkephalinergic neurons that are intrinsic to the striatum; this action may be related to a change in the regulation of striatal neurons. Lithium 36-43 proenkephalin Rattus norvegicus 158-168 275866-8 1978 Based on the characteristics of the lithium-induced increase in [Met6]enkephalin content, it is proposed that lithium may reduce the rate of release of [Met5]enkephalin from the small enkephalinergic neurons that are intrinsic to the striatum; this action may be related to a change in the regulation of striatal neurons. Lithium 110-117 proenkephalin Rattus norvegicus 70-80 275866-8 1978 Based on the characteristics of the lithium-induced increase in [Met6]enkephalin content, it is proposed that lithium may reduce the rate of release of [Met5]enkephalin from the small enkephalinergic neurons that are intrinsic to the striatum; this action may be related to a change in the regulation of striatal neurons. Lithium 110-117 proenkephalin Rattus norvegicus 158-168 663409-1 1978 Two enzyme resistant analogs of methionine enkephalin (H-Try-Gly-Gly-Phe-Met-OH) have been synthesized and tested for morphine-like properties in the stimulated guinea pig ileum, rat tail-flick, mouse tail-flick and for stability in whole brain homogenates. h-try-gly-gly-phe-met-oh 55-79 proenkephalin Rattus norvegicus 43-53 663409-1 1978 Two enzyme resistant analogs of methionine enkephalin (H-Try-Gly-Gly-Phe-Met-OH) have been synthesized and tested for morphine-like properties in the stimulated guinea pig ileum, rat tail-flick, mouse tail-flick and for stability in whole brain homogenates. Morphine 118-126 proenkephalin Rattus norvegicus 43-53 204498-6 1978 At 26 degrees C, 0.1--1.0 mM manganese but not magnesium or calcium increases the binding of 3H-methionine enkephalin, while at 0 degrees C manganese decreases the binding of methionine enkephalin. Manganese 140-149 proenkephalin Rattus norvegicus 186-196 209425-0 1978 Increase by enkephalin of acetylcholine release from striatal slices of the rat. Acetylcholine 26-39 proenkephalin Rattus norvegicus 12-22 639850-1 1978 The rate of release of enkephalin from rat striatal slices increased 7--10 fold in response to depolarization by 50 mM potassium ions in vitro. Potassium 119-128 proenkephalin Rattus norvegicus 23-33 204498-3 1978 3H-Methionine enkephalin associates and dissociates from the opiate receptor with 8--10 fold slower kinetics than 3H-opiates. Tritium 0-2 proenkephalin Rattus norvegicus 14-24 201319-6 1977 The observed configurational specificity was compared with the stringency that would be predicted to occur if enkephalin adopted certain hydrogen-bonded conformations at the receptor. Hydrogen 137-145 proenkephalin Rattus norvegicus 110-120 204498-4 1978 Though several opiates have similar affinities for sites labeled by 3H-methionine enkephalin, 3H-dihydromorphine and 3H-naloxone, some opiates such as morphine, dihydromorphine and oxymorphone are only one tenth as potent in competing for 3H-methionine enkephalin as for 3H-dihydromorphine and 3H-naloxone binding. Oxymorphone 181-192 proenkephalin Rattus norvegicus 82-92 204498-4 1978 Though several opiates have similar affinities for sites labeled by 3H-methionine enkephalin, 3H-dihydromorphine and 3H-naloxone, some opiates such as morphine, dihydromorphine and oxymorphone are only one tenth as potent in competing for 3H-methionine enkephalin as for 3H-dihydromorphine and 3H-naloxone binding. 3h-dihydromorphine 271-289 proenkephalin Rattus norvegicus 82-92 204498-4 1978 Though several opiates have similar affinities for sites labeled by 3H-methionine enkephalin, 3H-dihydromorphine and 3H-naloxone, some opiates such as morphine, dihydromorphine and oxymorphone are only one tenth as potent in competing for 3H-methionine enkephalin as for 3H-dihydromorphine and 3H-naloxone binding. 3h-naloxone 294-305 proenkephalin Rattus norvegicus 82-92 204498-5 1978 As with other opiate agonists, 5--10 mM sodium selectively decreases the binding of 3H-methionine enkephalin. Sodium 40-46 proenkephalin Rattus norvegicus 98-108 204498-6 1978 At 26 degrees C, 0.1--1.0 mM manganese but not magnesium or calcium increases the binding of 3H-methionine enkephalin, while at 0 degrees C manganese decreases the binding of methionine enkephalin. Manganese 29-38 proenkephalin Rattus norvegicus 107-117 204498-6 1978 At 26 degrees C, 0.1--1.0 mM manganese but not magnesium or calcium increases the binding of 3H-methionine enkephalin, while at 0 degrees C manganese decreases the binding of methionine enkephalin. Manganese 29-38 proenkephalin Rattus norvegicus 186-196 639364-0 1978 Modification of brain biogenic amines by met5-enkephalin amide in the rat. Amines 31-37 proenkephalin Rattus norvegicus 46-56 639364-6 1978 All doses of met5-enkephalin amide (150,200 and 600 microgram) and morphine (134 and 200 microgram) increased the brain levels of 5-hydroxyindoleacetic acid, whereas only the large doses modified the levels of noradrenaline and serotonin. Hydroxyindoleacetic Acid 130-156 proenkephalin Rattus norvegicus 18-28 639364-6 1978 All doses of met5-enkephalin amide (150,200 and 600 microgram) and morphine (134 and 200 microgram) increased the brain levels of 5-hydroxyindoleacetic acid, whereas only the large doses modified the levels of noradrenaline and serotonin. Norepinephrine 210-223 proenkephalin Rattus norvegicus 18-28 639364-6 1978 All doses of met5-enkephalin amide (150,200 and 600 microgram) and morphine (134 and 200 microgram) increased the brain levels of 5-hydroxyindoleacetic acid, whereas only the large doses modified the levels of noradrenaline and serotonin. Serotonin 228-237 proenkephalin Rattus norvegicus 18-28 639364-8 1978 The similarity of the effects of these two compounds indicates that morphine may act through an enkephalin-like mechanism. Morphine 68-76 proenkephalin Rattus norvegicus 96-106 563332-0 1977 Enkephalin: radioimmunoassay and radioreceptor assay in morphine dependent rats. Morphine 56-64 proenkephalin Rattus norvegicus 0-10 909611-2 1977 In rat brain slices preincubated with various radiolabelled putative neurotransmitters, methionine-enkephalin diminished the potassium-evoked release of dopamine and acetylcholine. Potassium 125-134 proenkephalin Rattus norvegicus 99-109 909611-2 1977 In rat brain slices preincubated with various radiolabelled putative neurotransmitters, methionine-enkephalin diminished the potassium-evoked release of dopamine and acetylcholine. Dopamine 153-161 proenkephalin Rattus norvegicus 99-109 909611-2 1977 In rat brain slices preincubated with various radiolabelled putative neurotransmitters, methionine-enkephalin diminished the potassium-evoked release of dopamine and acetylcholine. Acetylcholine 166-179 proenkephalin Rattus norvegicus 99-109 190683-1 1977 Intraventricular administration of the enkephalin analog, [D-Ala2]-metenkephalin, induces profound and long-lasting analgesia, as well as other opiate-like behavioral effects in the rat. [d-ala2]-metenkephalin 58-80 proenkephalin Rattus norvegicus 39-49 19604966-1 1977 With the indirect immunofluorescence technique the distribution of methionine-enkephalin-immunoreactive cell bodies was studied in the central nervous system of rats pretreated with colchicine. Methionine 67-77 proenkephalin Rattus norvegicus 78-88 19604966-1 1977 With the indirect immunofluorescence technique the distribution of methionine-enkephalin-immunoreactive cell bodies was studied in the central nervous system of rats pretreated with colchicine. Colchicine 182-192 proenkephalin Rattus norvegicus 78-88 193169-1 1977 The binding of 3H-enkephalin (methionine-enkephalin) to membranes of rat brain is inhibited by enkephalin and levorphanol with IC50 values of 5 and 1.6 nM, respectively. Levorphanol 110-121 proenkephalin Rattus norvegicus 18-28 193169-1 1977 The binding of 3H-enkephalin (methionine-enkephalin) to membranes of rat brain is inhibited by enkephalin and levorphanol with IC50 values of 5 and 1.6 nM, respectively. Levorphanol 110-121 proenkephalin Rattus norvegicus 41-51 193169-1 1977 The binding of 3H-enkephalin (methionine-enkephalin) to membranes of rat brain is inhibited by enkephalin and levorphanol with IC50 values of 5 and 1.6 nM, respectively. Levorphanol 110-121 proenkephalin Rattus norvegicus 41-51 193169-3 1977 Opiate agonists, morphine, dihydromorphine and l-methadone and opiate antagonists, naltrexone and naloxone are less effective inhibitors of 3H-enkephalin than in 3H-dihydromorphine and 3H-naloxone binding. Morphine 17-25 proenkephalin Rattus norvegicus 143-153 193169-3 1977 Opiate agonists, morphine, dihydromorphine and l-methadone and opiate antagonists, naltrexone and naloxone are less effective inhibitors of 3H-enkephalin than in 3H-dihydromorphine and 3H-naloxone binding. Dihydromorphine 27-42 proenkephalin Rattus norvegicus 143-153 193169-3 1977 Opiate agonists, morphine, dihydromorphine and l-methadone and opiate antagonists, naltrexone and naloxone are less effective inhibitors of 3H-enkephalin than in 3H-dihydromorphine and 3H-naloxone binding. Levomethadone 47-58 proenkephalin Rattus norvegicus 143-153 193169-3 1977 Opiate agonists, morphine, dihydromorphine and l-methadone and opiate antagonists, naltrexone and naloxone are less effective inhibitors of 3H-enkephalin than in 3H-dihydromorphine and 3H-naloxone binding. Naltrexone 83-93 proenkephalin Rattus norvegicus 143-153 193169-3 1977 Opiate agonists, morphine, dihydromorphine and l-methadone and opiate antagonists, naltrexone and naloxone are less effective inhibitors of 3H-enkephalin than in 3H-dihydromorphine and 3H-naloxone binding. Naloxone 98-106 proenkephalin Rattus norvegicus 143-153 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Opiate Alkaloids 9-16 proenkephalin Rattus norvegicus 158-168 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Oxygen 29-35 proenkephalin Rattus norvegicus 158-168 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Morphine 66-74 proenkephalin Rattus norvegicus 158-168 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Levorphanol 84-95 proenkephalin Rattus norvegicus 158-168 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Benzomorphans 104-117 proenkephalin Rattus norvegicus 158-168 193169-4 1977 However, opiates without the oxygen bridge as in the structure of morphine, such as levorphanol and the benzomorphans show affinities for the receptors of 3H-enkephalin equal or greater than their affinities for the receptors of 3H-opiates. Tritium 155-157 proenkephalin Rattus norvegicus 158-168 954850-0 1976 Enkephalin: a potential modulator of noradrenaline release in rat brain. Norepinephrine 37-50 proenkephalin Rattus norvegicus 0-10 974367-10 1976 6 It is suggested that (a) morphine and naloxone act at a subcortical site, probably the medial thalamus, to modify the cortical ACh release and that (b) naloxone may facilitate the electrically-induced release of ACh in the CNS by antagonizing the effect of the endogenous morphine-like factor, enkephalin. Morphine 27-35 proenkephalin Rattus norvegicus 296-306 974367-10 1976 6 It is suggested that (a) morphine and naloxone act at a subcortical site, probably the medial thalamus, to modify the cortical ACh release and that (b) naloxone may facilitate the electrically-induced release of ACh in the CNS by antagonizing the effect of the endogenous morphine-like factor, enkephalin. Naloxone 40-48 proenkephalin Rattus norvegicus 296-306 974367-10 1976 6 It is suggested that (a) morphine and naloxone act at a subcortical site, probably the medial thalamus, to modify the cortical ACh release and that (b) naloxone may facilitate the electrically-induced release of ACh in the CNS by antagonizing the effect of the endogenous morphine-like factor, enkephalin. Naloxone 154-162 proenkephalin Rattus norvegicus 296-306 61819-11 1976 The identity of the quinacrine-positive fibers is discussed with respect to recent suggestions that "purinergic", substance P, enkephalin, and somatosin-containing nerves, in addition to adrenergic and cholinergic nerves, are present in the gut wall. Quinacrine 20-30 proenkephalin Rattus norvegicus 127-137 1034220-3 1976 Rats made tolerant to morphine by repeated pellet implantation proved cross-tolerant to the pituitary extract as well as to synthetic methionine-enkephalin. Morphine 22-30 proenkephalin Rattus norvegicus 145-155 15625864-5 1976 In the presence of 100 mM NaCl, binding of [3H] met-enkephalin was 90-95% reduced, thus indicating the agonist properties of the peptide. Sodium Chloride 26-30 proenkephalin Rattus norvegicus 52-62 15625864-5 1976 In the presence of 100 mM NaCl, binding of [3H] met-enkephalin was 90-95% reduced, thus indicating the agonist properties of the peptide. Tritium 44-46 proenkephalin Rattus norvegicus 52-62 15625864-6 1976 The highly stereospecific binding of [3H] met-enkephalin was evidenced by the 10,000-fold greater potency of levorphanol than its analgesically inactive enantiomer dextrorphan to compete for [3H] met-enkephalin binding. Levorphanol 109-120 proenkephalin Rattus norvegicus 46-56 15625864-6 1976 The highly stereospecific binding of [3H] met-enkephalin was evidenced by the 10,000-fold greater potency of levorphanol than its analgesically inactive enantiomer dextrorphan to compete for [3H] met-enkephalin binding. Levorphanol 109-120 proenkephalin Rattus norvegicus 200-210 15625864-6 1976 The highly stereospecific binding of [3H] met-enkephalin was evidenced by the 10,000-fold greater potency of levorphanol than its analgesically inactive enantiomer dextrorphan to compete for [3H] met-enkephalin binding. Dextrorphan 164-175 proenkephalin Rattus norvegicus 46-56 15625864-6 1976 The highly stereospecific binding of [3H] met-enkephalin was evidenced by the 10,000-fold greater potency of levorphanol than its analgesically inactive enantiomer dextrorphan to compete for [3H] met-enkephalin binding. Dextrorphan 164-175 proenkephalin Rattus norvegicus 200-210 986560-0 1976 Elevated levels of enkephalin in morphine-dependent rats. Morphine 33-41 proenkephalin Rattus norvegicus 19-29 954850-1 1976 In slices of rat occipital cortex preincubated with 3H-noradrenaline, methioine-enkephalin diminished the overflow of tritium evoked by electrical field stimulation or by 20 mM potassium. 3h-noradrenaline 52-68 proenkephalin Rattus norvegicus 80-90 954850-1 1976 In slices of rat occipital cortex preincubated with 3H-noradrenaline, methioine-enkephalin diminished the overflow of tritium evoked by electrical field stimulation or by 20 mM potassium. Tritium 118-125 proenkephalin Rattus norvegicus 80-90 954850-1 1976 In slices of rat occipital cortex preincubated with 3H-noradrenaline, methioine-enkephalin diminished the overflow of tritium evoked by electrical field stimulation or by 20 mM potassium. Potassium 177-186 proenkephalin Rattus norvegicus 80-90 32826750-5 2021 The concentration of PENK-derived pronociceptive peptides was increased more robustly than that of Met-enkephalin in the ipsilateral lumbar spinal cord of CCI-exposed rats, as shown by mass spectrometry, and the pronociceptive effect of one of these peptides was blocked by an antagonist of the melanocortin 4 (MC4) receptor. CCI 155-158 proenkephalin Rattus norvegicus 21-25 183126-0 1976 Enkephalin and opiate narcotics increase cyclic GMP accumulation in slices of rat neostriatum. Cyclic GMP 41-51 proenkephalin Rattus norvegicus 0-10 33829293-0 2021 Saccharin and naltrexone prevent increased pain sensitivity and impaired long-term memory induced by repetitive neonatal noxious stimulation: role of BDNF and enkephalin. Saccharin 0-9 proenkephalin Rattus norvegicus 159-169 33667516-5 2021 Pre-treatment with the deltaOR agonist [D-ala2, D-leu5] enkephalin (DADLE) improved the neurologic deficits and the decreased infarct volume caused by cerebral ischemia/reperfusion injury, which were blocked by the EGFR inhibitor AG1478 and the MMP inhibitor GM6001, respectively. RTKI cpd 230-236 proenkephalin Rattus norvegicus 56-66 33667516-5 2021 Pre-treatment with the deltaOR agonist [D-ala2, D-leu5] enkephalin (DADLE) improved the neurologic deficits and the decreased infarct volume caused by cerebral ischemia/reperfusion injury, which were blocked by the EGFR inhibitor AG1478 and the MMP inhibitor GM6001, respectively. N-(2(R)-2-(hydroxamidocarbonylmethyl)-4-methylpentanoyl)-L-tryptophan methylamide 259-265 proenkephalin Rattus norvegicus 56-66 33165198-7 2020 After recovery, animals were tested following NAc injections of saline or the micro-opioid agonist [D-Ala, N-MePhe, Gly-ol]-enkephalin (DAMGO) (0.025 microg/side), combined with varying doses of EX4 (0, 0.05, or 0.10 microg/side) or EX9 (0, 2.5, 5.0 microg/side), counterbalanced across 6 testing days. n-mephe 107-114 proenkephalin Rattus norvegicus 124-134 32606204-6 2020 In rat brain slices containing the intercalated cells, we found that inhibition of glutamate release by a submaximal concentration of enkephalin was doubled by application of all three peptidase inhibitors combined. Glutamic Acid 83-92 proenkephalin Rattus norvegicus 134-144 32184167-0 2020 Let-7b-5p promotes electroacupuncture tolerance by downregulating Penk1 gene in CFA-induced inflammatory nociception rats. 3-chloro-4-fluoroaniline 80-83 proenkephalin Rattus norvegicus 66-71 32568844-10 2020 The micro-opioid receptor agonist (D-ALA2,N-ME-PHE4,GLY5-OL)-enkephalin acetate (DAMGO) decreased mechanical thresholds and did not affect heat-evoked withdrawal latencies in morphine-infused animals. n-me-phe4 42-51 proenkephalin Rattus norvegicus 61-71 32568844-10 2020 The micro-opioid receptor agonist (D-ALA2,N-ME-PHE4,GLY5-OL)-enkephalin acetate (DAMGO) decreased mechanical thresholds and did not affect heat-evoked withdrawal latencies in morphine-infused animals. gly5-ol 52-59 proenkephalin Rattus norvegicus 61-71 32568844-10 2020 The micro-opioid receptor agonist (D-ALA2,N-ME-PHE4,GLY5-OL)-enkephalin acetate (DAMGO) decreased mechanical thresholds and did not affect heat-evoked withdrawal latencies in morphine-infused animals. Morphine 175-183 proenkephalin Rattus norvegicus 61-71 32593790-5 2020 Mu-opioid receptor expression, measured by [3H] ([D-Ala2, N-MePhe4, Gly-ol]-enkephalin) (DAMGO), showed no effect of exercise while showing an effect of sex, with increased [3H] DAMGO binding in the brains of sedentary males compared to that of sedentary females. Tritium 44-46 proenkephalin Rattus norvegicus 76-86 32730947-8 2020 In the CPu, cocaine self-administration significantly increased the mRNA levels of Penk and Pdyn and abolished the mRNA levels of Pomc. Cocaine 12-19 proenkephalin Rattus norvegicus 83-87 31842282-7 2019 Substitution of the meta-position of Phe4 of Leu5-enkephalin provided high-affinity ligands with varying levels of selectivity and bias at both the deltaOR and microOR and improved peptide stability, while substitution with picoline derivatives produced lower-affinity ligands with G protein biases at both receptors. Picolines 224-232 proenkephalin Rattus norvegicus 50-60 31794788-19 2020 CONCLUSIONS: RYZBP has the potential to be an effective anti-migraine treatment through suppressing the EEG pain-wave, increasing the levels of SP, PENK, DORR and reducing expression of CCK and CGRP. ryzbp 13-18 proenkephalin Rattus norvegicus 148-152 30666890-0 2019 Delta Opioid Peptide [d-Ala2, d-Leu5] Enkephalin (DADLE) Exerts a Cytoprotective Effect in Astrocytes Exposed to Oxygen-Glucose Deprivation by Inducing Autophagy. delta opioid peptide 0-20 proenkephalin Rattus norvegicus 38-48 31001801-9 2019 Overall, several genes-Oxt, Pdyn, Penk, Pomc, Pth, Tac1, and Tgfb1-encoding for peptides/hormones stand out as top candidates to explain the therapeutic benefit of vitamin D3 supplementation. Cholecalciferol 164-174 proenkephalin Rattus norvegicus 34-38 31220675-1 2019 In order to obtain novel pharmacological tools and to investigate a multitargeting analgesic strategy, the CB1 and CB2 cannabinoid receptor agonist JWH-018 was conjugated with the opiate analgesic oxycodone or with an enkephalin related tetrapeptide. 1-pentyl-3-(1-naphthoyl)indole 148-155 proenkephalin Rattus norvegicus 218-228 30666890-0 2019 Delta Opioid Peptide [d-Ala2, d-Leu5] Enkephalin (DADLE) Exerts a Cytoprotective Effect in Astrocytes Exposed to Oxygen-Glucose Deprivation by Inducing Autophagy. oxygen-glucose 113-127 proenkephalin Rattus norvegicus 38-48 28144772-3 2017 We have recently identified a combination treatment of a mu opioid receptor antagonist naltrexone and a delta opioid receptor agonist D-Ala2-,N-Me-Phe4,Gly-ol Enkephalin (DPDPE) increases innate immune function. d-ala2-,n-me-phe4 134-151 proenkephalin Rattus norvegicus 159-169 30499309-4 2018 Bilateral activation of RVLM micro-opioid receptors with [d-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO) (8 mM, 50 nl) depressed adrenal sympathetic nerve activity for ~60 min ( n = 6; Delta49.9 +- 5.8%, P < 0.05). [d-ala2, n-me-phe4 57-75 proenkephalin Rattus norvegicus 86-96 29452071-13 2018 Moreover, KN-93 treatment reduced the expression of Arc and Penk, two immediate early genes, induced by chronic L-dopa. KN 93 10-15 proenkephalin Rattus norvegicus 60-64 29452071-13 2018 Moreover, KN-93 treatment reduced the expression of Arc and Penk, two immediate early genes, induced by chronic L-dopa. Levodopa 112-118 proenkephalin Rattus norvegicus 60-64 29447951-5 2018 The rFP is abolished by blocking voltage-gated Na+ channels with tetrodotoxin (TTX, 50 nM) or gap junctions with mefloquine (100 muM) and activating mu-opioid receptors with [D-Ala2,N-Me-Phe4,Gly5-ol]-Enkephalin (DAMGO, 1 muM). Tetrodotoxin 79-82 proenkephalin Rattus norvegicus 201-211 30943058-5 2019 In rats with patent arteries or ligated femoral arteries, [d-Pen2,5]enkephalin (DPDPE), a delta-opioid agonist injected intrathecally (10 mug in 10 mul), significantly attenuated the pressor responses to contraction, stretch, and lactic acid (all P < 0.05). Lactic Acid 230-241 proenkephalin Rattus norvegicus 68-78 30949500-5 2019 In vitro studies were performed using rat primary hippocampal neurons and the results showed that enkephalin decreased p53 and caspase-3 levels to 47.6% and 67.2%, respectively, compared to neurons treated with glutamate, thus inhibiting neuron apoptosis caused by glutamate. Glutamic Acid 265-274 proenkephalin Rattus norvegicus 98-108 30949500-7 2019 The results showed that tar-exo-enkephalin crossed the blood brain barrier (BBB) and decreased the levels of LDH, p53, caspase-3, and NO by 41.9, 52.6, 45.5, and 57.9% compared to the tMCAO rats, respectively. tmcao 184-189 proenkephalin Rattus norvegicus 32-42 30949500-8 2019 In addition, tar-exo-enkephalin improved brain neuron density and neurological score after tMCAO. tmcao 91-96 proenkephalin Rattus norvegicus 21-31 30281326-4 2018 Bilateral activation of RVLM micro-opioid receptors with [d-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO) (8 mM, 50 nl) depressed adrenal sympathetic nerve activity for ~60 min ( n = 6; Delta49.9 +- 5.8%, P < 0.05). [d-ala2, n-me-phe4 57-75 proenkephalin Rattus norvegicus 86-96 27889070-0 2017 Prenatal ethanol exposure modifies locomotor activity and induces selective changes in Met-enk expression in adolescent rats. Ethanol 9-16 proenkephalin Rattus norvegicus 91-94 28509375-1 2017 Delta and kappa opioid receptors (DOR and KOR, respectively) and their endogenous ligands, proenkephalin (PENK) and prodynorphin (PDYN)-derived opioid peptides are proposed as important mediators of nicotine reward. Nicotine 199-207 proenkephalin Rattus norvegicus 91-104 28509375-1 2017 Delta and kappa opioid receptors (DOR and KOR, respectively) and their endogenous ligands, proenkephalin (PENK) and prodynorphin (PDYN)-derived opioid peptides are proposed as important mediators of nicotine reward. Nicotine 199-207 proenkephalin Rattus norvegicus 106-110 28509375-2 2017 This study investigated the regulatory effect of chronic nicotine treatment on the gene expression of DOR, KOR, PENK and PDYN in the mesocorticolimbic system. Nicotine 57-65 proenkephalin Rattus norvegicus 112-116 27889070-4 2017 This work assessed the susceptibility of adolescent rats to prenatal and/or postnatal ethanol exposure in terms of behavioral responses, as well as alcohol effects on Met-enk expression in brain areas related to drug reinforcement. Alcohols 148-155 proenkephalin Rattus norvegicus 171-174 27841313-0 2016 Increased expression of proenkephalin and prodynorphin mRNAs in the nucleus accumbens of compulsive methamphetamine taking rats. Methamphetamine 100-115 proenkephalin Rattus norvegicus 24-37 27725218-6 2016 [D-Ala2,N-Me-Phe4,Gly5-ol]-Enkephalin acetate salt (DAMGO), an MOR agonist, reduced uIPSC amplitude by 74% in fast-spiking GABAergic interneuron (FS) FS connections without a significant effect on FS pyramidal cell (Pyr) connections. n-me-phe4 8-17 proenkephalin Rattus norvegicus 27-37 27725218-9 2016 The DOR agonist, [D-Pen2,5]-Enkephalin hydrate (DPDPE), reduced uIPSC amplitude by 39% in FS FS and by 49% in FS Pyr connections, which was antagonized by the DOR antagonist, naltrindole. naltrindole 175-186 proenkephalin Rattus norvegicus 28-38 27841313-10 2016 Because PDYN and PENK are expressed in dopamine D1- and D2-containing NAc neurons, respectively, these findings suggest that mechanisms, which impact both cell types may play a role in the regulation of compulsive methamphetamine taking by rats. Dopamine 39-47 proenkephalin Rattus norvegicus 17-21 27841313-10 2016 Because PDYN and PENK are expressed in dopamine D1- and D2-containing NAc neurons, respectively, these findings suggest that mechanisms, which impact both cell types may play a role in the regulation of compulsive methamphetamine taking by rats. Methamphetamine 214-229 proenkephalin Rattus norvegicus 17-21 26044638-4 2015 Furthermore, we demonstrated that MP-10 induced egr-1 expression was distributed evenly between enkephalin-containing D2-neurons and substance P-containing D1-neurons. 2-((4-(1-methyl-4-pyridin-4-yl-1H-pyrazol-3-yl)phenoxy)methyl)quinoline 34-39 proenkephalin Rattus norvegicus 96-106 27610039-2 2016 In this study, we examined whether a micro-opioid agonist, [D-Ala2,N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO), affects the two-pore domain K(+) channel (K2P) current in rat SG neurons using a slice whole-cell patch clamp technique. n-me-phe4 67-76 proenkephalin Rattus norvegicus 87-97 27610039-2 2016 In this study, we examined whether a micro-opioid agonist, [D-Ala2,N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO), affects the two-pore domain K(+) channel (K2P) current in rat SG neurons using a slice whole-cell patch clamp technique. gly5-ol 78-85 proenkephalin Rattus norvegicus 87-97 27517088-7 2016 Using similar EtOH and nicotine pretreatment methods resulted in increased paired-pulse ratios of evoked EPSCs in enkephalin-positive medium spiny neurons in DLS slices. Ethanol 14-18 proenkephalin Rattus norvegicus 114-124 27517088-7 2016 Using similar EtOH and nicotine pretreatment methods resulted in increased paired-pulse ratios of evoked EPSCs in enkephalin-positive medium spiny neurons in DLS slices. Nicotine 23-31 proenkephalin Rattus norvegicus 114-124 27232517-0 2016 Protective effect of delta opioid receptor agonist (D-Ala2, D-Leu5) enkephalin on permanent focal cerebral ischemia in rats. d-leu5 60-66 proenkephalin Rattus norvegicus 68-78 27232517-1 2016 To investigate the effect of delta opioid receptor agonist (D-Ala, D-Leu) enkephalin (DADLE) on the permanent focal cerebral ischemia in rats. D-LEUCINE 67-72 proenkephalin Rattus norvegicus 74-84 26777278-8 2016 Moreover, gene expression level of Pdyn, Penk, Oprk, and Oprm in the DS was significantly correlated with cocaine intake only in Fischer rats. Cocaine 106-113 proenkephalin Rattus norvegicus 41-45 26611918-0 2016 Enkephalin analogues with N-phenyl-N-(piperidin-2-ylmethyl)propionamide derivatives: Synthesis and biological evaluations. n-phenyl-n-(piperidin-2-ylmethyl)propionamide 26-71 proenkephalin Rattus norvegicus 0-10 26611918-2 2016 Two series of hybrid molecules bearing N-phenyl-N-(piperidin-2-ylmethyl)propionamide derived small molecules conjugated with an enkephalin analogues with and without a linker (beta-alanine) were designed and synthesized. n-phenyl-n-(piperidin-2-ylmethyl)propionamide 39-84 proenkephalin Rattus norvegicus 128-138 26611918-4 2016 The replacement of Tyr with Dmt and introduction of a linker between the small molecule and enkephalin analogue resulted in highly potent ligands. Tyrosine 19-22 proenkephalin Rattus norvegicus 92-102 26611918-4 2016 The replacement of Tyr with Dmt and introduction of a linker between the small molecule and enkephalin analogue resulted in highly potent ligands. dmt 28-31 proenkephalin Rattus norvegicus 92-102 27072528-0 2016 Enkephalin and dynorphin neuropeptides are differently correlated with locomotor hypersensitivity and levodopa-induced dyskinesia in parkinsonian rats. Levodopa 102-110 proenkephalin Rattus norvegicus 0-10 27071073-9 2016 DCS decreased the Egr-1 labeling in the PAG and DHSC as well as the immunoreactivity of spinal enkephalin. Cycloserine 0-3 proenkephalin Rattus norvegicus 95-105 26332891-0 2015 Regulation of the orexigenic neuropeptide, enkephalin, by PPARdelta and fatty acids in neurons of the hypothalamus and forebrain. Fatty Acids 72-83 proenkephalin Rattus norvegicus 43-53 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. Fatty Acids 52-72 proenkephalin Rattus norvegicus 199-209 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. Fatty Acids 52-72 proenkephalin Rattus norvegicus 211-214 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. Fatty Acids, Unsaturated 97-119 proenkephalin Rattus norvegicus 199-209 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. Fatty Acids, Unsaturated 97-119 proenkephalin Rattus norvegicus 211-214 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. oleic 121-126 proenkephalin Rattus norvegicus 199-209 26332891-1 2015 Ingestion of a high-fat diet composed mainly of the saturated fatty acid, palmitic (PA), and the unsaturated fatty acid, oleic (OA), stimulates transcription in the brain of the opioid neuropeptide, enkephalin (ENK), which promotes intake of substances of abuse. oleic 121-126 proenkephalin Rattus norvegicus 211-214 26332891-4 2015 In the second set of experiments, PA treatment of hypothalamic and forebrain neurons had no effect on PPARdelta protein while stimulating ENK mRNA and protein, whereas OA increased both mRNA and protein levels of PPARdelta in forebrain neurons while having no effect on ENK mRNA and increasing ENK levels. Protactinium 34-36 proenkephalin Rattus norvegicus 138-141 26332891-5 2015 These findings show that PA has a strong, stimulatory effect on ENK and weak effect on PPARdelta protein, whereas OA has a strong stimulatory effect on PPARdelta and weak effect on ENK, consistent with the inhibitory effect of PPARdelta on ENK. Protactinium 25-27 proenkephalin Rattus norvegicus 64-67 26332891-8 2015 This inverse relationship is consistent with our additional findings, that a saturated (palmitic; PA) compared to a monounsaturated fatty acid (oleic; OA) has a strong stimulatory effect on ENK and weak effect on PPARdelta. Fatty Acids, Monounsaturated 116-142 proenkephalin Rattus norvegicus 190-193 26332891-8 2015 This inverse relationship is consistent with our additional findings, that a saturated (palmitic; PA) compared to a monounsaturated fatty acid (oleic; OA) has a strong stimulatory effect on ENK and weak effect on PPARdelta. oleic 144-149 proenkephalin Rattus norvegicus 190-193 26044638-5 2015 In contrast, haloperidol (3 mg/kg) selectively activated egr-1 expression in enkephalin neurons. Haloperidol 13-24 proenkephalin Rattus norvegicus 77-87 26013542-3 2015 We observed that Cmpd101 inhibits the desensitization of the G protein-activated inwardly-rectifying potassium current evoked by receptor-saturating concentrations of methionine-enkephalin (Met-Enk), [d-Ala(2), N-MePhe(4), Gly-ol(5)]-enkephalin (DAMGO), endomorphin-2, and morphine in rat and mouse locus coeruleus (LC) neurons. Potassium 101-110 proenkephalin Rattus norvegicus 178-188 26634226-10 2015 LL rats had an opposite pattern, maintaining activation of PGi-ENK LC afferents but not CNA-CRF LC afferents or LC neurons. 2cer 59-62 proenkephalin Rattus norvegicus 63-66 26316468-3 2015 We designed our multifunctional ligands based on the well-known second generation bradykinin 2 receptor antagonist Hoe 140 (DArg-Arg-Pro-Hyp-Gly-Thi-Ser-DTic-Oic-Arg-OH) and the opioid enkephalin analogues Tyr-DAla-Phe, Tyr-DAla-Gly-Phe and Tyr-Pro-Phe. 4-hydroxy-2-octenal 115-118 proenkephalin Rattus norvegicus 185-195 26316468-3 2015 We designed our multifunctional ligands based on the well-known second generation bradykinin 2 receptor antagonist Hoe 140 (DArg-Arg-Pro-Hyp-Gly-Thi-Ser-DTic-Oic-Arg-OH) and the opioid enkephalin analogues Tyr-DAla-Phe, Tyr-DAla-Gly-Phe and Tyr-Pro-Phe. Proline 133-136 proenkephalin Rattus norvegicus 185-195 26119705-3 2015 Activation of MOR with [D-Ala(2) , N-Me-Phe(4) , Gly(5) -ol] enkephalin (DAMGO) during immunoprecipitation caused a 150% increase in Goalpha and a 50% increase in RGS4 in the pellet. N-Methyl-L-phenylalanine 35-43 proenkephalin Rattus norvegicus 61-71 26119705-3 2015 Activation of MOR with [D-Ala(2) , N-Me-Phe(4) , Gly(5) -ol] enkephalin (DAMGO) during immunoprecipitation caused a 150% increase in Goalpha and a 50% increase in RGS4 in the pellet. gly(5) -ol 49-59 proenkephalin Rattus norvegicus 61-71 26001615-13 2015 Additionally, LY303870 (10 nmol/day) treatment prior to L-dopa administration reduced the phosphorylated levels of dopamine- and cyclic adenosine monophosphate-regulated phosphoprotein of 32 kDa at Thr 34 and extracellular signal-regulated kinases 1/2 as well as the levels of activity-regulated cytoskeleton-associated protein and Penk in L-dopa-primed PD rats. 1-(N-(2-methoxybenzyl)acetylamino)-3-(1H-indol-3-yl)-2-(N-(2-(4-(piperidin-1-yl)piperidin-1-yl)acetyl)amino)propane 14-22 proenkephalin Rattus norvegicus 332-336 26013542-3 2015 We observed that Cmpd101 inhibits the desensitization of the G protein-activated inwardly-rectifying potassium current evoked by receptor-saturating concentrations of methionine-enkephalin (Met-Enk), [d-Ala(2), N-MePhe(4), Gly-ol(5)]-enkephalin (DAMGO), endomorphin-2, and morphine in rat and mouse locus coeruleus (LC) neurons. Potassium 101-110 proenkephalin Rattus norvegicus 194-197 26013542-3 2015 We observed that Cmpd101 inhibits the desensitization of the G protein-activated inwardly-rectifying potassium current evoked by receptor-saturating concentrations of methionine-enkephalin (Met-Enk), [d-Ala(2), N-MePhe(4), Gly-ol(5)]-enkephalin (DAMGO), endomorphin-2, and morphine in rat and mouse locus coeruleus (LC) neurons. Potassium 101-110 proenkephalin Rattus norvegicus 234-244 25573074-1 2015 BACKGROUND AND PURPOSE: mu-Opioid receptors, pro-opiomelanocortin and pro-enkephalin are highly expressed in the nucleus tractus solitarii (NTS) and mu receptor agonists given to the NTS dose-dependently increased BP. Benzo(a)pyrene 214-216 proenkephalin Rattus norvegicus 70-84 25817357-1 2015 The aim of the present study was to determine whether a new cyclic analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), a preferential mu-(MORs), and, to a lower extent, a delta-opioid receptor (DORs) agonist in vitro, could reinstate ethanol-induced conditioned place preference (CPP). emodepside 89-94 proenkephalin Rattus norvegicus 77-87 25817357-1 2015 The aim of the present study was to determine whether a new cyclic analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), a preferential mu-(MORs), and, to a lower extent, a delta-opioid receptor (DORs) agonist in vitro, could reinstate ethanol-induced conditioned place preference (CPP). Nitrogen 95-96 proenkephalin Rattus norvegicus 77-87 25817357-1 2015 The aim of the present study was to determine whether a new cyclic analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), a preferential mu-(MORs), and, to a lower extent, a delta-opioid receptor (DORs) agonist in vitro, could reinstate ethanol-induced conditioned place preference (CPP). n(beta)-carbonyl-d-lys 106-128 proenkephalin Rattus norvegicus 77-87 25817357-1 2015 The aim of the present study was to determine whether a new cyclic analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), a preferential mu-(MORs), and, to a lower extent, a delta-opioid receptor (DORs) agonist in vitro, could reinstate ethanol-induced conditioned place preference (CPP). enkephalinamide 140-155 proenkephalin Rattus norvegicus 77-87 25817357-1 2015 The aim of the present study was to determine whether a new cyclic analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), a preferential mu-(MORs), and, to a lower extent, a delta-opioid receptor (DORs) agonist in vitro, could reinstate ethanol-induced conditioned place preference (CPP). Ethanol 281-288 proenkephalin Rattus norvegicus 77-87 25817357-10 2015 and the DORs agonist-[Leu(5)]-enkephalin (2.7 and 5.4nmol, i.c.v.) 4nmol 52-57 proenkephalin Rattus norvegicus 30-40 25846434-12 2015 Sucrose significantly increased serum levels of endorphin and enkephalin. Sucrose 0-7 proenkephalin Rattus norvegicus 62-72 25817357-0 2015 The influence of the new enkephalin derivative, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), on reinstatement of ethanol-induced conditioned place preference in rats. cyclo[n(epsilon),n(beta)-carbonyl-d-lys 48-87 proenkephalin Rattus norvegicus 25-35 25817357-0 2015 The influence of the new enkephalin derivative, cyclo[N(epsilon),N(beta)-carbonyl-d-Lys(2),Dap(5)] enkephalinamide (cUENK6), on reinstatement of ethanol-induced conditioned place preference in rats. Ethanol 145-152 proenkephalin Rattus norvegicus 25-35 25716198-0 2015 Enkephalin analog, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), inhibits the ethanol withdrawal-induced anxiety-like behavior in rats. cyclo[n 19-26 proenkephalin Rattus norvegicus 0-10 25716198-0 2015 Enkephalin analog, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), inhibits the ethanol withdrawal-induced anxiety-like behavior in rats. n(beta)-carbonyl-d-lys 36-58 proenkephalin Rattus norvegicus 0-10 25716198-0 2015 Enkephalin analog, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), inhibits the ethanol withdrawal-induced anxiety-like behavior in rats. Ethanol 109-116 proenkephalin Rattus norvegicus 0-10 25716198-1 2015 An analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), is predominantly a functional agonist of mu-opioid receptors (MOPr) and, to a lesser extent, of delta-opioid receptors (DOPr) in vitro. cyclo[n 25-32 proenkephalin Rattus norvegicus 13-23 25716198-1 2015 An analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), is predominantly a functional agonist of mu-opioid receptors (MOPr) and, to a lesser extent, of delta-opioid receptors (DOPr) in vitro. n(beta)-carbonyl-d-lys 42-64 proenkephalin Rattus norvegicus 13-23 25716198-1 2015 An analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2),Dap(5)] enkephalinamide (cUENK6), is predominantly a functional agonist of mu-opioid receptors (MOPr) and, to a lesser extent, of delta-opioid receptors (DOPr) in vitro. )] enkephalinamide 73-91 proenkephalin Rattus norvegicus 13-23 25525190-9 2015 Evaluation of pathway-specific markers (substance P mRNA for the direct pathway and enkephalin mRNA for the indirect pathway) revealed that TAK-063 activated both the direct and indirect pathways of MSNs. 1-(2-fluoro-4-(1H-pyrazol-1-yl)phenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one 140-147 proenkephalin Rattus norvegicus 84-94 25231620-5 2014 We observed a significant leftward shift of the MOR agonist [D-Ala2-N-Me-Phe4-Glycol5]-enkephalin concentration-response relationship in neurons isolated from rats with occluded arteries compared with those that were perfused freely. d-ala2-n-me-phe4-glycol5] 61-86 proenkephalin Rattus norvegicus 87-97 25445367-2 2015 However, morphological evidence indicating that NT or ENK coexists with glutamate in the MDH is still meager. N-hydroxy-1-(3,4-methylenedioxyphenyl)-2-aminopropane 89-92 proenkephalin Rattus norvegicus 54-57 25445367-6 2015 The findings suggest that glutamate is coreleased with NT or ENK from axon terminals of interneurons in the superficial layers of the MDH. Glutamic Acid 26-35 proenkephalin Rattus norvegicus 61-64 25086310-6 2014 Fat, ethanol, and nicotine, but not sucrose, increased the single- and double-labeling of ENK and c-Fos-ir in precisely the same brain areas, the middle parvocellular but not lateral area of the paraventricular nucleus, central but not basolateral nucleus of the AMYG, and core but not shell of the NAc. Ethanol 5-12 proenkephalin Rattus norvegicus 90-93 25150040-8 2014 Met-enk content in brain regions of infants prenatally exposed to ethanol was quantitated by radioimmunoassay. Ethanol 66-73 proenkephalin Rattus norvegicus 4-7 25150040-10 2014 Met-enk content in mesocorticolimbic regions - PFC and NAcc - was increased as a consequence of prenatal exposure to ethanol. Ethanol 117-124 proenkephalin Rattus norvegicus 4-7 25150040-11 2014 Conversely, Met-enk levels in the VTA were reduced by prenatal ethanol manipulation. Ethanol 63-70 proenkephalin Rattus norvegicus 16-19 25150040-12 2014 Prenatal ethanol also increased peptide levels in the medial-posterior zone of the CP, and strongly augmented Met-enk content in the hippocampus and hypothalamus. Ethanol 9-16 proenkephalin Rattus norvegicus 114-117 25150040-13 2014 These findings show that prenatal ethanol exposure stimulates consumption of the drug in infant rats, and induces selective changes in Met-enk levels in regions of the mesocorticolimbic and nigrostriatal systems, the hypothalamus and hippocampus. Ethanol 34-41 proenkephalin Rattus norvegicus 139-142 25546922-12 2014 The mu-opioid receptor incubation in selected brain structures was performed with a specific radioisotope [3H]DAMGO [tyrosyl-3,5,-3H(N)-D-Ala-Gly-N-methyl-Phe-Gly-enkephalin]. Tritium 107-109 proenkephalin Rattus norvegicus 163-173 25086310-0 2014 Common effects of fat, ethanol, and nicotine on enkephalin in discrete areas of the brain. Nicotine 36-44 proenkephalin Rattus norvegicus 48-58 25086310-6 2014 Fat, ethanol, and nicotine, but not sucrose, increased the single- and double-labeling of ENK and c-Fos-ir in precisely the same brain areas, the middle parvocellular but not lateral area of the paraventricular nucleus, central but not basolateral nucleus of the AMYG, and core but not shell of the NAc. Nicotine 18-26 proenkephalin Rattus norvegicus 90-93 24637095-7 2014 Furthermore, the bryostatin-induced increase of the frequency and amplitude of IPSCs was blocked by methionine enkephalin which selectively suppressed the excitability of interneurons. Bryostatins 17-27 proenkephalin Rattus norvegicus 111-121 25179084-1 2014 Human opiorphin (Gln-Arg-Phe-Ser-Arg; QRFSR-peptide) is a physiological inhibitor of enkephalin-inactivating peptidases. Gln-Arg 17-24 proenkephalin Rattus norvegicus 85-95 25179084-1 2014 Human opiorphin (Gln-Arg-Phe-Ser-Arg; QRFSR-peptide) is a physiological inhibitor of enkephalin-inactivating peptidases. Phe-Ser-Arg 25-36 proenkephalin Rattus norvegicus 85-95 25179084-2 2014 We previously demonstrated that opiorphin can substitute for the classic mixture of peptidase inhibitors and greatly improves the specific binding and affinity of the enkephalin-related peptide [(3)H]MERF (Tyr-Gly-Gly-Phe-Met-Arg-Phe; YGGFMRF) for rat brain opioid receptors. Tyrosine 206-209 proenkephalin Rattus norvegicus 167-177 25179084-2 2014 We previously demonstrated that opiorphin can substitute for the classic mixture of peptidase inhibitors and greatly improves the specific binding and affinity of the enkephalin-related peptide [(3)H]MERF (Tyr-Gly-Gly-Phe-Met-Arg-Phe; YGGFMRF) for rat brain opioid receptors. Phenylalanine 218-221 proenkephalin Rattus norvegicus 167-177 24893172-7 2014 Changes in expression of Marcks, Pum1, Nupr1, and Penk caused by in utero phthalate exposure were confirmed by qRT-PCR. phthalic acid 74-83 proenkephalin Rattus norvegicus 50-54 24190586-7 2014 In the same subjects, the mu-opioid receptor agonist (D-Ala2-N-MePhe4, Glyol)-enkephalin (DAMGO; 0.25 mug) was infused on a separate test day. d-ala2-n-mephe4 54-69 proenkephalin Rattus norvegicus 78-88 24790199-7 2014 Experiment 2 used central infusions of D-Ala(2), NMe-Phe(4), Gly-ol(5)]-enkephalin (DAMGO), a mu-opioid receptor agonist, in the periacqueductal gray and nucleus accumbens shell to revalue the shock. nme-phe 49-56 proenkephalin Rattus norvegicus 72-82 24790199-7 2014 Experiment 2 used central infusions of D-Ala(2), NMe-Phe(4), Gly-ol(5)]-enkephalin (DAMGO), a mu-opioid receptor agonist, in the periacqueductal gray and nucleus accumbens shell to revalue the shock. gly-ol 61-67 proenkephalin Rattus norvegicus 72-82 24333843-8 2014 Rats received saline, morphine or the opiate agonist [d-Ala2, N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO), and tissue sections through the LC were processed for immunogold-silver detection of WLS and MOR. n-me-phe4 62-71 proenkephalin Rattus norvegicus 82-92 24213354-8 2014 These results show that specific neuroadaptation mediated by the ENKergic neurotransmission in the BLAp is a key regulator of resilience, whereas a decrease of the ENK in the BLAp is a maladaptation mechanism, which mediates the behavioral dichotomy observed between vulnerable and resilient following 3 weeks of CUS. cus 313-316 proenkephalin Rattus norvegicus 65-68 24599471-5 2014 Our results show a rise in basal intracellular calcium ([Ca(2+)]i) in response to application of [D-Ala(2)-N-Me-Phe(4),Gly5-ol]-Enkephalin (DAMGO), a MOR agonist, that is blocked by D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP), a MOR antagonist. Calcium 47-54 proenkephalin Rattus norvegicus 128-138 24599471-5 2014 Our results show a rise in basal intracellular calcium ([Ca(2+)]i) in response to application of [D-Ala(2)-N-Me-Phe(4),Gly5-ol]-Enkephalin (DAMGO), a MOR agonist, that is blocked by D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP), a MOR antagonist. [d-ala(2)-n-me-phe 97-115 proenkephalin Rattus norvegicus 128-138 24599471-5 2014 Our results show a rise in basal intracellular calcium ([Ca(2+)]i) in response to application of [D-Ala(2)-N-Me-Phe(4),Gly5-ol]-Enkephalin (DAMGO), a MOR agonist, that is blocked by D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP), a MOR antagonist. d-phe-cys-tyr-d-trp-orn-thr-pen-thr-nh2 182-221 proenkephalin Rattus norvegicus 128-138 24599471-5 2014 Our results show a rise in basal intracellular calcium ([Ca(2+)]i) in response to application of [D-Ala(2)-N-Me-Phe(4),Gly5-ol]-Enkephalin (DAMGO), a MOR agonist, that is blocked by D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP), a MOR antagonist. CTOP 223-227 proenkephalin Rattus norvegicus 128-138 24038231-4 2013 In situ hybridization experiments showed that acute treatment with morphine (10 mg/kg) decreased both enkephalin and dynorphin mRNA levels in the CPu after 30 min, but PD168,077 (1 mg/kg) did not modify their expression. Morphine 67-75 proenkephalin Rattus norvegicus 102-112 24090157-5 2014 Furthermore, we observed a strong correlation between enkephalin expression and sucrose preference in the shell part of the nucleus accumbens, with a lower level of enkephalin expression being associated with lower sucrose preference. Sucrose 80-87 proenkephalin Rattus norvegicus 54-64 24090157-5 2014 Furthermore, we observed a strong correlation between enkephalin expression and sucrose preference in the shell part of the nucleus accumbens, with a lower level of enkephalin expression being associated with lower sucrose preference. Sucrose 215-222 proenkephalin Rattus norvegicus 165-175 24431463-10 2014 Accordingly, increasing endogenous tone by blocking the enzymatic degradation of enkephalin inhibited GABA neurotransmission in yoked saline rats but not in cocaine-extinguished rats. gamma-Aminobutyric Acid 102-106 proenkephalin Rattus norvegicus 81-91 24431463-11 2014 In conclusion, our results indicate that following withdrawal from cocaine self-administration enkephalin levels in the VP are elevated and the opioid modulation of GABA neurotransmission is impaired. Cocaine 67-74 proenkephalin Rattus norvegicus 95-105 23740773-9 2014 Inhibition of peripheral GIRK using Tertiapin-Q (TPQ) attenuated antinociceptive effects of peripherally administered DOR agonist, [D-Pen(2), D-Pen(6) ]-enkephalin (DPDPE), on mechanical hypersensitivity in masseter muscle. [d-pen 131-137 proenkephalin Rattus norvegicus 153-163 23740773-9 2014 Inhibition of peripheral GIRK using Tertiapin-Q (TPQ) attenuated antinociceptive effects of peripherally administered DOR agonist, [D-Pen(2), D-Pen(6) ]-enkephalin (DPDPE), on mechanical hypersensitivity in masseter muscle. d-pen 132-137 proenkephalin Rattus norvegicus 153-163 24038231-5 2013 Coadministration of the two agonists demonstrated that PD168,077 counteracted the morphine-induced changes and even increased enkephalin mRNA levels. pd168 55-60 proenkephalin Rattus norvegicus 126-136 23499830-4 2013 Evaluation of striatal mRNA for enkephalin and dynorphin, markers of the indirect and direct striatonigral pathways, and of GAD67 showed an increase in dynorphin in primed SKF 38393-treated rats, no matter whether immobilized or freely moving during priming induction, whilst enkephalin and GAD67 did not show any changes. 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine 172-181 proenkephalin Rattus norvegicus 32-42 23994597-3 2013 We hypothesized that systemic morphine before a post-conditioning test would more potently attenuate the affective aspect compared to the sensory component and that [d-Ala2-N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO), a mu-selective opioid receptor agonist, injected into the central nucleus of the amygdala (CeA) would reduce established CPA. Morphine 30-38 proenkephalin Rattus norvegicus 193-203 23994597-3 2013 We hypothesized that systemic morphine before a post-conditioning test would more potently attenuate the affective aspect compared to the sensory component and that [d-Ala2-N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO), a mu-selective opioid receptor agonist, injected into the central nucleus of the amygdala (CeA) would reduce established CPA. ala2-n-me-phe4 168-182 proenkephalin Rattus norvegicus 193-203 23994597-3 2013 We hypothesized that systemic morphine before a post-conditioning test would more potently attenuate the affective aspect compared to the sensory component and that [d-Ala2-N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO), a mu-selective opioid receptor agonist, injected into the central nucleus of the amygdala (CeA) would reduce established CPA. cpa 334-337 proenkephalin Rattus norvegicus 193-203 23862670-0 2013 The glucocorticoid analog dexamethasone alters the expression and the distribution of dopamine receptors and enkephalin within cortico-subcortical regions. Dexamethasone 26-39 proenkephalin Rattus norvegicus 109-119 23862670-4 2013 Dexamethasone reduced mRNA expression of D1 receptor and enkephalin in the cortex. Dexamethasone 0-13 proenkephalin Rattus norvegicus 57-67 23880055-5 2013 Similarly, repeated intraplantar injection of loperamide (150 mug/50 muL intraplantarly) and D-Ala(2)-MePhe(4)-Glyol(5) enkephalin (300 mug/50 muL), a highly selective mu-opioid receptor (MOR) agonist, also resulted in decreased inhibition of mechanical hypersensitivity. d-ala(2)-mephe 93-107 proenkephalin Rattus norvegicus 120-130 23880055-5 2013 Similarly, repeated intraplantar injection of loperamide (150 mug/50 muL intraplantarly) and D-Ala(2)-MePhe(4)-Glyol(5) enkephalin (300 mug/50 muL), a highly selective mu-opioid receptor (MOR) agonist, also resulted in decreased inhibition of mechanical hypersensitivity. (4)-glyol 107-116 proenkephalin Rattus norvegicus 120-130 24152443-4 2013 In this study, using two NGF-responsive rodent cell model systems, PC12h cells and F11 cells, we found the delta opioid neuropeptide [D-Ala2, D-Leu5] enkephalin (DADLE)-mediated neuroprotective effect could be blocked by pharmacological reagents: the delta opioid antagonist naltrindole, PI3K inhibitor LY294002, MAPK inhibitor PD98059, and Trk inhibitor K252a, respectively. naltrindole 275-286 proenkephalin Rattus norvegicus 150-160 24152443-4 2013 In this study, using two NGF-responsive rodent cell model systems, PC12h cells and F11 cells, we found the delta opioid neuropeptide [D-Ala2, D-Leu5] enkephalin (DADLE)-mediated neuroprotective effect could be blocked by pharmacological reagents: the delta opioid antagonist naltrindole, PI3K inhibitor LY294002, MAPK inhibitor PD98059, and Trk inhibitor K252a, respectively. 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one 303-311 proenkephalin Rattus norvegicus 150-160 24152443-4 2013 In this study, using two NGF-responsive rodent cell model systems, PC12h cells and F11 cells, we found the delta opioid neuropeptide [D-Ala2, D-Leu5] enkephalin (DADLE)-mediated neuroprotective effect could be blocked by pharmacological reagents: the delta opioid antagonist naltrindole, PI3K inhibitor LY294002, MAPK inhibitor PD98059, and Trk inhibitor K252a, respectively. 2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one 328-335 proenkephalin Rattus norvegicus 150-160 23868737-1 2013 OBJECTIVE: Previous in vitro studies have shown that the degradation of [Leu5]enkephalin during incubation with cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors such as amastatin, captopril, and phosphoramidon. amastatin 225-234 proenkephalin Rattus norvegicus 78-88 23716621-4 2013 Tolerance to the opioid peptide [d-Ala(2),N-MePhe(4),Gly-ol]-enkephalin was not reversed by ethanol. n-mephe 42-49 proenkephalin Rattus norvegicus 61-71 23966683-2 2013 The present study in Sprague Dawley rats examined the possibility that the orexigenic peptide systems, enkephalin (ENK) and orexin (OX), which are stimulated by nicotine in adult animals and promote consummatory behavior, may be similarly responsive to nicotine"s stimulatory effect in utero while having long-term behavioral consequences. Nicotine 161-169 proenkephalin Rattus norvegicus 103-113 23966683-2 2013 The present study in Sprague Dawley rats examined the possibility that the orexigenic peptide systems, enkephalin (ENK) and orexin (OX), which are stimulated by nicotine in adult animals and promote consummatory behavior, may be similarly responsive to nicotine"s stimulatory effect in utero while having long-term behavioral consequences. Nicotine 161-169 proenkephalin Rattus norvegicus 115-118 23966683-2 2013 The present study in Sprague Dawley rats examined the possibility that the orexigenic peptide systems, enkephalin (ENK) and orexin (OX), which are stimulated by nicotine in adult animals and promote consummatory behavior, may be similarly responsive to nicotine"s stimulatory effect in utero while having long-term behavioral consequences. Nicotine 253-261 proenkephalin Rattus norvegicus 103-113 23966683-2 2013 The present study in Sprague Dawley rats examined the possibility that the orexigenic peptide systems, enkephalin (ENK) and orexin (OX), which are stimulated by nicotine in adult animals and promote consummatory behavior, may be similarly responsive to nicotine"s stimulatory effect in utero while having long-term behavioral consequences. Nicotine 253-261 proenkephalin Rattus norvegicus 115-118 23966683-3 2013 The results demonstrated that nicotine exposure during gestation at low doses (0.75 or 1.5 mg/kg/d) significantly increased mRNA levels and density of neurons that express ENK in the hypothalamic paraventricular nucleus and central nucleus of the amygdala, OX, and another orexigenic peptide, melanin-concentrating hormone, in the perifornical lateral hypothalamus in preweanling offspring. Nicotine 30-38 proenkephalin Rattus norvegicus 172-175 23966683-5 2013 Colabeling of the cell proliferation marker BrdU with the neuronal marker NeuN and peptides revealed a marked stimulatory effect of prenatal nicotine on neurogenesis, but not gliogenesis, and also on the number of newly generated neurons expressing ENK, OX, or melanin-concentrating hormone. Nicotine 141-149 proenkephalin Rattus norvegicus 249-252 23868737-1 2013 OBJECTIVE: Previous in vitro studies have shown that the degradation of [Leu5]enkephalin during incubation with cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors such as amastatin, captopril, and phosphoramidon. Captopril 236-245 proenkephalin Rattus norvegicus 78-88 23868737-1 2013 OBJECTIVE: Previous in vitro studies have shown that the degradation of [Leu5]enkephalin during incubation with cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors such as amastatin, captopril, and phosphoramidon. phosphoramidon 251-265 proenkephalin Rattus norvegicus 78-88 23868737-10 2013 CONCLUSION: The present data, together with those of earlier studies, clearly demonstrate that amastatin-, captopril-, and phosphoramidon-sensitive enzymes play an important role in the inactivation of [Leu5]enkephalin administered intrathecally in rat. Captopril 107-116 proenkephalin Rattus norvegicus 208-218 23583519-8 2013 Enk was elevated within the PVN in TMT and BA exposed rats compared to H2O exposure. Butyric Acid 43-45 proenkephalin Rattus norvegicus 0-3 22875915-7 2012 To address the functional significance of such interactions, we exposed methionine-enkephalin (MENK) to PN and identified the major metabolite, 3-nitrotyrosine-methionine-sulfoxide (NSO)-MENK, using liquid chromatography-mass spectrometry. Peroxynitrous Acid 104-106 proenkephalin Rattus norvegicus 83-93 22703995-3 2012 The current investigation examined the possibility that the opioid peptide enkephalin (ENK), known to mediate some of the reinforcing properties of ethanol, may function in the mPFC during the anticipation of ethanol access. Ethanol 148-155 proenkephalin Rattus norvegicus 75-85 22703995-3 2012 The current investigation examined the possibility that the opioid peptide enkephalin (ENK), known to mediate some of the reinforcing properties of ethanol, may function in the mPFC during the anticipation of ethanol access. Ethanol 148-155 proenkephalin Rattus norvegicus 87-90 22703995-3 2012 The current investigation examined the possibility that the opioid peptide enkephalin (ENK), known to mediate some of the reinforcing properties of ethanol, may function in the mPFC during the anticipation of ethanol access. Ethanol 209-216 proenkephalin Rattus norvegicus 75-85 22703995-3 2012 The current investigation examined the possibility that the opioid peptide enkephalin (ENK), known to mediate some of the reinforcing properties of ethanol, may function in the mPFC during the anticipation of ethanol access. Ethanol 209-216 proenkephalin Rattus norvegicus 87-90 22703995-8 2012 These findings support the role of ENK, acting through MOR within the PrL to promote the anticipation and excessive consumption of ethanol. Ethanol 131-138 proenkephalin Rattus norvegicus 35-38 22337204-1 2012 The biopharmaceutical and physicochemical properties of two new cyclic prodrugs (CA-[cychexalanine (Cha(4)), D-Leu(5) ]-Enkephalin (Enk) and coumarinic acid (CA)-[Cha(4), D-Ala(5)]-Enk) of opioid peptides that were designed to be stable to oxidative metabolism by cytochrome P-450 enzymes in the intestinal mucosa are described in this paper. Cyclohexylamines 100-103 proenkephalin Rattus norvegicus 120-123 22337204-1 2012 The biopharmaceutical and physicochemical properties of two new cyclic prodrugs (CA-[cychexalanine (Cha(4)), D-Leu(5) ]-Enkephalin (Enk) and coumarinic acid (CA)-[Cha(4), D-Ala(5)]-Enk) of opioid peptides that were designed to be stable to oxidative metabolism by cytochrome P-450 enzymes in the intestinal mucosa are described in this paper. D-LEUCINE 109-114 proenkephalin Rattus norvegicus 120-123 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 80-85 proenkephalin Rattus norvegicus 68-78 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. Bicuculline 101-112 proenkephalin Rattus norvegicus 68-78 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. d-phe-cys-tyr-d-trp-orn-thr-pen-thr-nh2 162-201 proenkephalin Rattus norvegicus 68-78 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. CTOP 203-207 proenkephalin Rattus norvegicus 68-78 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. Bicuculline 229-240 proenkephalin Rattus norvegicus 68-78 22552756-9 2012 Coadministration of the mu-receptor agonist D-Ala2,N-Me-Phe4,Glyol5-enkephalin (DAMGO, 0.1 mug) with bicuculline counteracted, whereas the mu-receptor antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP, 1 mug) enhanced the bicuculline-induced increase of ethanol intake. Ethanol 261-268 proenkephalin Rattus norvegicus 68-78 23287538-9 2013 This vulnerability to ethanol abuse was associated with a lower c-Fos immunoreactivity in the Nac and enduring alterations of the expression of Penk and Slc6a4, 2 neurotransmission-related genes that have been shown to play critical roles in the behavioral effects of ethanol and alcoholism. Ethanol 22-29 proenkephalin Rattus norvegicus 144-148 23287538-9 2013 This vulnerability to ethanol abuse was associated with a lower c-Fos immunoreactivity in the Nac and enduring alterations of the expression of Penk and Slc6a4, 2 neurotransmission-related genes that have been shown to play critical roles in the behavioral effects of ethanol and alcoholism. Ethanol 268-275 proenkephalin Rattus norvegicus 144-148 23337715-2 2013 Although morphine and [D-Ala, N-MePhe, Gly(ol)]-enkephalin (DAMGO) both activate mu-opioid receptors, their influence on receptor-mediated signaling differs; therefore, we determined if they differentially influenced ventral pallidal-mediated motor sensitization. n-mephe 30-37 proenkephalin Rattus norvegicus 48-58 23337715-2 2013 Although morphine and [D-Ala, N-MePhe, Gly(ol)]-enkephalin (DAMGO) both activate mu-opioid receptors, their influence on receptor-mediated signaling differs; therefore, we determined if they differentially influenced ventral pallidal-mediated motor sensitization. gly(ol) 39-46 proenkephalin Rattus norvegicus 48-58 22725682-9 2013 The high-activity rats with elevated enkephalin, but not high-TG rats, were also unusually sensitive to naltrexone, which significantly reduced their alcohol intake. Naltrexone 104-114 proenkephalin Rattus norvegicus 37-47 22725682-9 2013 The high-activity rats with elevated enkephalin, but not high-TG rats, were also unusually sensitive to naltrexone, which significantly reduced their alcohol intake. Alcohols 150-157 proenkephalin Rattus norvegicus 37-47 23948996-9 2013 In 6-OHDA rats only, we observed a significant and positive correlation between locomotor velocity and both D1-class dopamine receptor (D1R) (direct pathway) and enkephalin (ENK) (indirect pathway) mRNA in the lesioned striatum, as well as between D1R and ENK mRNA. Oxidopamine 3-9 proenkephalin Rattus norvegicus 162-172 23948996-9 2013 In 6-OHDA rats only, we observed a significant and positive correlation between locomotor velocity and both D1-class dopamine receptor (D1R) (direct pathway) and enkephalin (ENK) (indirect pathway) mRNA in the lesioned striatum, as well as between D1R and ENK mRNA. Oxidopamine 3-9 proenkephalin Rattus norvegicus 174-177 22683090-0 2012 Proenkephalin mediates the enduring effects of adolescent cannabis exposure associated with adult opiate vulnerability. Opiate Alkaloids 98-104 proenkephalin Rattus norvegicus 0-13 22683090-4 2012 METHODS: To investigate the functional significance of NAcsh Penk tone, selective viral-mediated knockdown and overexpression of Penk was performed, followed by analysis of subsequent heroin SA behavior. nacsh 55-60 proenkephalin Rattus norvegicus 61-65 22683090-6 2012 RESULTS: Here we show that regulation of the Penk opioid neuropeptide gene in NAcsh directly regulates heroin SA behavior. nacsh 78-83 proenkephalin Rattus norvegicus 45-49 22683090-6 2012 RESULTS: Here we show that regulation of the Penk opioid neuropeptide gene in NAcsh directly regulates heroin SA behavior. heroin sa 103-112 proenkephalin Rattus norvegicus 45-49 22683090-7 2012 Selective viral-mediated knockdown of Penk in striatopallidal neurons attenuates heroin SA in adolescent THC-exposed rats, whereas Penk overexpression potentiates heroin SA in THC-naive rats. Dronabinol 105-108 proenkephalin Rattus norvegicus 38-42 22683090-8 2012 Furthermore, we report that adolescent THC exposure mediates Penk upregulation through reduction of histone H3 lysine 9 (H3K9) methylation in the NAcsh, thereby disrupting the normal developmental pattern of H3K9 methylation. Dronabinol 39-42 proenkephalin Rattus norvegicus 61-65 22683090-8 2012 Furthermore, we report that adolescent THC exposure mediates Penk upregulation through reduction of histone H3 lysine 9 (H3K9) methylation in the NAcsh, thereby disrupting the normal developmental pattern of H3K9 methylation. Lysine 111-117 proenkephalin Rattus norvegicus 61-65 22683090-8 2012 Furthermore, we report that adolescent THC exposure mediates Penk upregulation through reduction of histone H3 lysine 9 (H3K9) methylation in the NAcsh, thereby disrupting the normal developmental pattern of H3K9 methylation. nacsh 146-151 proenkephalin Rattus norvegicus 61-65 22683090-9 2012 CONCLUSIONS: These data establish a direct association between THC-induced NAcsh Penk upregulation and heroin SA and indicate that epigenetic dysregulation of Penk underlies the long-term effects of THC. Dronabinol 63-66 proenkephalin Rattus norvegicus 81-85 22683090-9 2012 CONCLUSIONS: These data establish a direct association between THC-induced NAcsh Penk upregulation and heroin SA and indicate that epigenetic dysregulation of Penk underlies the long-term effects of THC. Dronabinol 63-66 proenkephalin Rattus norvegicus 159-163 22683090-9 2012 CONCLUSIONS: These data establish a direct association between THC-induced NAcsh Penk upregulation and heroin SA and indicate that epigenetic dysregulation of Penk underlies the long-term effects of THC. nacsh 75-80 proenkephalin Rattus norvegicus 81-85 22683090-9 2012 CONCLUSIONS: These data establish a direct association between THC-induced NAcsh Penk upregulation and heroin SA and indicate that epigenetic dysregulation of Penk underlies the long-term effects of THC. Dronabinol 199-202 proenkephalin Rattus norvegicus 159-163 23000149-8 2012 Furthermore, a causal role for mu opioid stimulation in overconsumption was demonstrated by observations that microinjection in the same anterior dorsomedial quadrant of a mu receptor agonist ([D-Ala2, N-MePhe4, Gly-ol]-enkephalin; DAMGO) generated intense >250% increases in intake of palatable sweet food (without altering hedonic impact of sweet tastes). [d-ala2, n-mephe4 193-210 proenkephalin Rattus norvegicus 220-230 22150526-3 2012 Male Sprague-Dawley rats were intrastriatally infused with d-Ala(2)-N-Me-Phe(4),Gly(5)-ol]enkephalin (DAMGO; 1 mug/muL), treated with methamphetamine (0.5 mg/kg) and killed at 45 min or 2 h later. d-ala(2)-n-me-phe 59-76 proenkephalin Rattus norvegicus 90-100 22733753-5 2012 Perisciatic injection of any component of this pathway, including MMP9 hemopexin domain or claudin-1 siRNA, enables an opioid peptide ([D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin) and a selective sodium channel (NaV1.7)-blocking toxin (ProToxin-II) to exert antinociceptive effects without motor impairment. gly5-ol 153-160 proenkephalin Rattus norvegicus 162-172 22356887-0 2012 Genomic analysis of [d-Ala2, d-Leu5] enkephalin preconditioning in cortical neuron and glial cell injury after oxygen deprivation. Oxygen 111-117 proenkephalin Rattus norvegicus 37-47 21964537-9 2012 Seventy eight different genes were overlapping the exercise and AICAR group at 24 h. Ingenuity identified six overlapping genes between the exercise, AICAR, and metformin groups including NR4A3, TNFRSF12A, HBB, PENK, PAP, and MAP4K4. Metformin 161-170 proenkephalin Rattus norvegicus 211-215 22083687-3 2012 In this study, a novel [Met5]enkephalin amide (MEA) analogue [Met5]enkephalin (ME)-semicarbazide synthesized by another laboratory in our group was assessed for its antinociceptive effects compared with ME-ethylamide, MEA and ME, using tail flick test. mea 47-50 proenkephalin Rattus norvegicus 29-39 22083687-3 2012 In this study, a novel [Met5]enkephalin amide (MEA) analogue [Met5]enkephalin (ME)-semicarbazide synthesized by another laboratory in our group was assessed for its antinociceptive effects compared with ME-ethylamide, MEA and ME, using tail flick test. mea 47-50 proenkephalin Rattus norvegicus 67-77 25767488-1 2012 The present study utilized a nitroglycerin-induced rat model of migraine to detect the effects of rizatriptan benzoate on proenkephalin and substance P gene expression in the midbrain using real-time quantitative polymerase chain reaction and investigate whether rizatriptan benzoate can regulate the endogenous pain modulatory system. rizatriptan 98-118 proenkephalin Rattus norvegicus 122-135 25767488-2 2012 The results showed that rizatriptan benzoate significantly reduced expression of the mRNAs for proenkephalin and substance P. Rizatriptan benzoate may inhibit the analgesic effect of the endogenous pain modulatory system. rizatriptan 24-44 proenkephalin Rattus norvegicus 95-108 25767488-2 2012 The results showed that rizatriptan benzoate significantly reduced expression of the mRNAs for proenkephalin and substance P. Rizatriptan benzoate may inhibit the analgesic effect of the endogenous pain modulatory system. rizatriptan 126-146 proenkephalin Rattus norvegicus 95-108 22001156-3 2012 Adult male rats received either saline, morphine or [d-Ala2, N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO) directly into the lateral ventricles. [d-ala2, n-me-phe4 52-70 proenkephalin Rattus norvegicus 81-91 23185117-19 2012 CONCLUSION: These data indicated that levodopa/benserazide-loaded microspheres could be used to ameliorate the expression of LID by reducing the expression of pGluR1S831 and pGluR1S845 as well as Arc and Penk. Levodopa 38-46 proenkephalin Rattus norvegicus 204-208 23185117-19 2012 CONCLUSION: These data indicated that levodopa/benserazide-loaded microspheres could be used to ameliorate the expression of LID by reducing the expression of pGluR1S831 and pGluR1S845 as well as Arc and Penk. Benserazide 47-58 proenkephalin Rattus norvegicus 204-208 21513819-2 2011 We evaluated concentration-dependent effects of a selective mu-opioid receptor agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) on respiratory output in the arterially perfused in situ rat preparation, which preserves the integrity of the ponto-medullary respiratory network. N-Methyl-L-phenylalanine 97-105 proenkephalin Rattus norvegicus 120-130 21864608-3 2011 In this investigation, we studied the effects of [D-Ala2, D-Leu5] enkephalin (DADLE), a potent DOR agonist, on acute mitochondrial dysfunction and ensuing cell damage induced by sodium azide in primary rat cortical neuronal cultures, and explored possible mechanisms underlying. Sodium Azide 178-190 proenkephalin Rattus norvegicus 66-76 21525276-5 2011 Intra-NAc treatment with the selective mu-opioid receptor agonist [D-Ala(2),N-MePhe(4),Gly(5)-ol]enkephalin (DAMGO) (0.1-10 ng) and the mu-opioid receptor antagonist Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP) (0.3-3 mug) increased and decreased social play, respectively. n-mephe 76-83 proenkephalin Rattus norvegicus 97-107 21349267-0 2011 Delta opioid peptide [D-Ala2, D-Leu5] enkephalin (DADLE) triggers postconditioning against transient forebrain ischemia. Peptides 13-20 proenkephalin Rattus norvegicus 38-48 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Serotonin 121-140 proenkephalin Rattus norvegicus 202-212 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Serotonin 121-140 proenkephalin Rattus norvegicus 216-219 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Serotonin 121-140 proenkephalin Rattus norvegicus 247-250 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Norepinephrine 152-166 proenkephalin Rattus norvegicus 202-212 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Norepinephrine 152-166 proenkephalin Rattus norvegicus 216-219 21247719-5 2011 A good linear relationship with coefficients >=0.99 was achieved over the concentration ranges of 10-1000ngmL(-1) for 5-hydroxytryptamine (5-HT) and norepinephrine (NE); 2-250ngmL(-1) for methionine-enkephalin (M-ENK) and leucine-enkephalin (L-ENK). Norepinephrine 152-166 proenkephalin Rattus norvegicus 247-250 21525276-5 2011 Intra-NAc treatment with the selective mu-opioid receptor agonist [D-Ala(2),N-MePhe(4),Gly(5)-ol]enkephalin (DAMGO) (0.1-10 ng) and the mu-opioid receptor antagonist Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP) (0.3-3 mug) increased and decreased social play, respectively. Glycine 87-90 proenkephalin Rattus norvegicus 97-107 21525276-5 2011 Intra-NAc treatment with the selective mu-opioid receptor agonist [D-Ala(2),N-MePhe(4),Gly(5)-ol]enkephalin (DAMGO) (0.1-10 ng) and the mu-opioid receptor antagonist Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP) (0.3-3 mug) increased and decreased social play, respectively. 5)-ol 91-96 proenkephalin Rattus norvegicus 97-107 21430144-5 2011 In morphine-treated animals, recovery from acute [Met](5)enkephalin-induced desensitization and receptor recycling was diminished. Morphine 3-11 proenkephalin Rattus norvegicus 57-67 21131267-8 2011 Uptake of taurocholate and [d-penicillamine(2,5)]-enkephalin, two established Oatp substrates, was increased in animals subjected to peripheral pain, suggesting increased Oatp1a4-mediated transport. periodate-oxidized adenosine 5'-triphosphate 78-82 proenkephalin Rattus norvegicus 50-60 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 21273080-4 2011 Two lipidic derivatives with varying side chain lengths (C(8)-Enk-NH(2) (1), C(12)-Enk-NH(2) (2)) and their acetylated analogues were successfully synthesised. 1-octene 57-61 proenkephalin Rattus norvegicus 62-65 21273080-6 2011 C(8)-Enk-NH(2) (1) and its acetylated analogue Ac-C8-Enk-NH(2) (3) exhibited apparent permeabilities (mean+-SD) of 2.51+-0.75x10(-6)cm/s and 1.06+-0.62x10(-6), respectively. ac-c8 47-52 proenkephalin Rattus norvegicus 5-8 21273080-6 2011 C(8)-Enk-NH(2) (1) and its acetylated analogue Ac-C8-Enk-NH(2) (3) exhibited apparent permeabilities (mean+-SD) of 2.51+-0.75x10(-6)cm/s and 1.06+-0.62x10(-6), respectively. ac-c8 47-52 proenkephalin Rattus norvegicus 53-56 21273080-8 2011 All analogues exhibited improved Caco-2 homogenate stability compared to Leu-Enk-NH(2) with t(1/2) values of: C8-Enk-NH(2) (1): 31.7 min, C(12)-Enk-NH(2) (2): 14.7 min, Ac-C8-Enk-NH(2) (3): 83 min, Ac-C(12)-Enk-NH(2) (4): 27 min. Leucine 73-76 proenkephalin Rattus norvegicus 77-80 21273080-10 2011 In vivo nasal administration of C(8)-Enk-NH(2) to male rats resulted in concentrations of 5.9+-1.84x10(-2) muM in the olfactory bulbs, 1.35+-1.01x10(-2) muM in the brain and 6.53+-1.87x10(-3) muM in the blood 10 min after administration. 1-octene 32-36 proenkephalin Rattus norvegicus 37-40 21289167-7 2011 However, the mu agonist, DAMGO ([d-Ala2, NMe-Phe4, Gly5-ol]-enkephalin), appeared to attenuate this negative incentive learning. [d-ala2, nme-phe4 32-49 proenkephalin Rattus norvegicus 60-70 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20686827-4 2011 Results showed the following: (1) dense ENK-ir fibers and terminals and GABA-ir cell bodies, fibers, and terminals were observed in the rNTS; (2) ENK-ir terminals mainly make symmetric synapses with GABA-ir and immunonegative somas and dendrites; (3) co-existence of ENK/GABA-ir axon terminals and convergence of ENK- and GABA-ir terminals on one immunonegative soma or dendrite can also be observed. gamma-Aminobutyric Acid 199-203 proenkephalin Rattus norvegicus 146-149 20603139-6 2010 It was also accompanied by a greater responsiveness of the HFC rats to the stimulatory effect of a PVN-injected, ENK analogue, D-ala2-met-enkephalinamide, compared to saline on consumption of the high-fat diet. H-Tyr-D-Ala-Gly-Phe-Met-NH2 127-153 proenkephalin Rattus norvegicus 113-116 20864528-0 2010 The dopamine D1-D2 receptor heteromer localizes in dynorphin/enkephalin neurons: increased high affinity state following amphetamine and in schizophrenia. Amphetamine 121-132 proenkephalin Rattus norvegicus 61-71 21602922-5 2011 Importantly, agonists at the MOR that promote receptor endocytosis, such as the endogenous peptides enkephalin and beta-endorphin, show a reduced propensity to promote antinociceptive tolerance than do agonists, like morphine, which do not promote receptor endocytosis. Morphine 217-225 proenkephalin Rattus norvegicus 100-110 20456008-9 2010 Chronic IEM 1460 treatment reversed L-DOPA-induced up-regulation of pre-proenkephalin-A, and normalised pre-proenkephalin-B mRNA expression in the lateral striatum, indicating an inhibition of both behavioural and molecular correlates of priming. IEM 1460 8-16 proenkephalin Rattus norvegicus 72-87 20605629-0 2010 Effects of acute ethanol administration on methionine-enkephalin expression and release in regions of the rat brain. Ethanol 17-24 proenkephalin Rattus norvegicus 54-64 20605629-0 2010 Effects of acute ethanol administration on methionine-enkephalin expression and release in regions of the rat brain. Methionine 43-53 proenkephalin Rattus norvegicus 54-64 20605629-4 2010 The aim of this work was to investigate the effects of different ethanol doses on methionine-enkephalin (Met-enk) release from the rat nucleus accumbens (NAcc). Ethanol 65-72 proenkephalin Rattus norvegicus 93-103 20605629-4 2010 The aim of this work was to investigate the effects of different ethanol doses on methionine-enkephalin (Met-enk) release from the rat nucleus accumbens (NAcc). Ethanol 65-72 proenkephalin Rattus norvegicus 93-96 20605629-8 2010 Ethanol doses of 0.5, 1 and 2.5 g/kg induced a 2.7-, 4.9- and 3.4-fold increase in Met-enk release from the NAcc. Ethanol 0-7 proenkephalin Rattus norvegicus 87-90 20605629-11 2010 Ethanol, at a dose of 2.5 g/kg, induced a significant 66.7% decrease in Met-enk content in the NAcc, as well as a 76.4% reduction in peptide levels in the CP. Ethanol 0-7 proenkephalin Rattus norvegicus 76-79 20605629-13 2010 On the other hand, an ethanol dose of 0.5 g/kg produced a non-significant decrease in Met-enk levels in the PFC. Ethanol 22-29 proenkephalin Rattus norvegicus 90-93 20605629-14 2010 Our results suggest that ethanol-induced changes in enkephalin expression and release in regions of the mesocorticolimbic and nigrostriatal pathways could be involved in ethanol central effects. Ethanol 25-32 proenkephalin Rattus norvegicus 52-62 20605629-14 2010 Our results suggest that ethanol-induced changes in enkephalin expression and release in regions of the mesocorticolimbic and nigrostriatal pathways could be involved in ethanol central effects. Ethanol 170-177 proenkephalin Rattus norvegicus 52-62 20543079-4 2010 The pressor responses to static contraction were compared before and after the injection of the mu-opioid receptor agonist [d-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin (DAMGO; 1 microg) into the abdominal aorta of decerebrated rats in which one femoral artery had been occluded 72 h previously (n = 10) and in control rats whose femoral arteries were freely perfused (n = 8). n-mephe 133-140 proenkephalin Rattus norvegicus 154-164 20543079-4 2010 The pressor responses to static contraction were compared before and after the injection of the mu-opioid receptor agonist [d-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin (DAMGO; 1 microg) into the abdominal aorta of decerebrated rats in which one femoral artery had been occluded 72 h previously (n = 10) and in control rats whose femoral arteries were freely perfused (n = 8). gly-ol 144-150 proenkephalin Rattus norvegicus 154-164 20456008-9 2010 Chronic IEM 1460 treatment reversed L-DOPA-induced up-regulation of pre-proenkephalin-A, and normalised pre-proenkephalin-B mRNA expression in the lateral striatum, indicating an inhibition of both behavioural and molecular correlates of priming. Levodopa 36-42 proenkephalin Rattus norvegicus 72-87 20692550-7 2010 Rats with high 2% ethanol intake or high TGs, two measures found to be closely related, had significantly elevated expression of enkephalin (ENK) and galanin (GAL) in the hypothalamic paraventricular nucleus (PVN) but no change in neuropeptide Y (NPY) in the arcuate nucleus (ARC). Ethanol 18-25 proenkephalin Rattus norvegicus 129-139 20692550-7 2010 Rats with high 2% ethanol intake or high TGs, two measures found to be closely related, had significantly elevated expression of enkephalin (ENK) and galanin (GAL) in the hypothalamic paraventricular nucleus (PVN) but no change in neuropeptide Y (NPY) in the arcuate nucleus (ARC). Ethanol 18-25 proenkephalin Rattus norvegicus 141-144 20692550-7 2010 Rats with high 2% ethanol intake or high TGs, two measures found to be closely related, had significantly elevated expression of enkephalin (ENK) and galanin (GAL) in the hypothalamic paraventricular nucleus (PVN) but no change in neuropeptide Y (NPY) in the arcuate nucleus (ARC). trichlorosucrose 41-44 proenkephalin Rattus norvegicus 129-139 20692550-7 2010 Rats with high 2% ethanol intake or high TGs, two measures found to be closely related, had significantly elevated expression of enkephalin (ENK) and galanin (GAL) in the hypothalamic paraventricular nucleus (PVN) but no change in neuropeptide Y (NPY) in the arcuate nucleus (ARC). trichlorosucrose 41-44 proenkephalin Rattus norvegicus 141-144 20184566-0 2010 Effect of chronic ethanol on enkephalin in the hypothalamus and extra-hypothalamic areas. Ethanol 18-25 proenkephalin Rattus norvegicus 29-39 20184566-2 2010 Previous studies in Sprague-Dawley rats have demonstrated that ENK in the hypothalamic paraventricular nucleus (PVN) is stimulated by voluntary consumption of ethanol. Ethanol 159-166 proenkephalin Rattus norvegicus 63-66 20184566-3 2010 This suggests that this opioid peptide may be involved in promoting the drinking of ethanol, consistent with our recent findings that PVN injections of ENK analogs stimulate ethanol intake. Ethanol 84-91 proenkephalin Rattus norvegicus 152-155 20331576-2 2010 Our previous studies have examined the effects of ethanol on hypothalamic peptide systems of the paraventricular nucleus (PVN) and identified a positive feedback loop in which PVN peptides, such as enkephalin and galanin, stimulate ethanol intake and ethanol, in turn, stimulates the expression of these peptides. Ethanol 50-57 proenkephalin Rattus norvegicus 198-208 20184566-3 2010 This suggests that this opioid peptide may be involved in promoting the drinking of ethanol, consistent with our recent findings that PVN injections of ENK analogs stimulate ethanol intake. Ethanol 174-181 proenkephalin Rattus norvegicus 152-155 20331576-2 2010 Our previous studies have examined the effects of ethanol on hypothalamic peptide systems of the paraventricular nucleus (PVN) and identified a positive feedback loop in which PVN peptides, such as enkephalin and galanin, stimulate ethanol intake and ethanol, in turn, stimulates the expression of these peptides. Ethanol 232-239 proenkephalin Rattus norvegicus 198-208 20331576-2 2010 Our previous studies have examined the effects of ethanol on hypothalamic peptide systems of the paraventricular nucleus (PVN) and identified a positive feedback loop in which PVN peptides, such as enkephalin and galanin, stimulate ethanol intake and ethanol, in turn, stimulates the expression of these peptides. Ethanol 232-239 proenkephalin Rattus norvegicus 198-208 20184566-8 2010 RESULTS: With qRT-PCR, the rats chronically drinking ethanol plus water compared to water alone showed significantly higher levels of ENK mRNA, not only in the PVN but also in the VTA, NAcSh, NAcC, and mPFC, although not in the CeA. Ethanol 53-60 proenkephalin Rattus norvegicus 134-137 20184566-8 2010 RESULTS: With qRT-PCR, the rats chronically drinking ethanol plus water compared to water alone showed significantly higher levels of ENK mRNA, not only in the PVN but also in the VTA, NAcSh, NAcC, and mPFC, although not in the CeA. Water 66-71 proenkephalin Rattus norvegicus 134-137 20184566-8 2010 RESULTS: With qRT-PCR, the rats chronically drinking ethanol plus water compared to water alone showed significantly higher levels of ENK mRNA, not only in the PVN but also in the VTA, NAcSh, NAcC, and mPFC, although not in the CeA. Water 84-89 proenkephalin Rattus norvegicus 134-137 20184566-8 2010 RESULTS: With qRT-PCR, the rats chronically drinking ethanol plus water compared to water alone showed significantly higher levels of ENK mRNA, not only in the PVN but also in the VTA, NAcSh, NAcC, and mPFC, although not in the CeA. nacc 192-196 proenkephalin Rattus norvegicus 134-137 20184566-9 2010 Using radiolabeled ISH, levels of ENK mRNA in rats drinking ethanol were found to be elevated in all areas examined, including the CeA. Ethanol 60-67 proenkephalin Rattus norvegicus 34-37 20184566-10 2010 The experiment using DIG confirmed this effect of ethanol, showing an increase in density of ENK-expressing cells in all areas studied. Ethanol 50-57 proenkephalin Rattus norvegicus 93-96 20184566-12 2010 CONCLUSIONS: While distinguishing the NAc as a site where ENK and DYN respond differentially, these findings lead us to propose that these opioids, in response to voluntary ethanol consumption, are generally elevated in extra-hypothalamic as well as hypothalamic areas, possibly to carry out specific area-related functions that, in turn, drive animals to further consume ethanol. nac 38-41 proenkephalin Rattus norvegicus 58-61 19951300-6 2010 To test for receptor specificity, 2 doses each of the mu-receptor agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-Enkephalin (DAMGO), delta-receptor agonist D-Ala-Gly-Phe-Met-NH2 (DALA), or kappa-receptor agonist U-50,488H were injected. gly(5)-ol 96-105 proenkephalin Rattus norvegicus 107-117 20106595-5 2010 In contrast, intrathalamic administration of [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin acetate (DAMGO), a MOR-specific agonist, induced a statistically significant decrease of all tonic phase pain-related behaviours assessed until 30-35min after formalin hind paw injection. N-Methyl-L-phenylalanine 56-64 proenkephalin Rattus norvegicus 80-90 20106595-5 2010 In contrast, intrathalamic administration of [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin acetate (DAMGO), a MOR-specific agonist, induced a statistically significant decrease of all tonic phase pain-related behaviours assessed until 30-35min after formalin hind paw injection. Formaldehyde 250-258 proenkephalin Rattus norvegicus 80-90 19948154-4 2010 The compounds tested were morphine, the mu-receptor agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-Enkephalin (DAMGO), the delta-receptor agonist D-Ala-Gly-Phe-Met-NH2 (DALA), and the opioid antagonist naloxone methiodide (m-naloxone). N-Methyl-L-phenylalanine 70-78 proenkephalin Rattus norvegicus 93-103 19951300-16 2010 Prior studies show that learning to drink ethanol stimulates PVN expression and production of the peptides enkephalin and dynorphin, which are endogenous agonists for the delta- and kappa-receptors, respectively. Ethanol 42-49 proenkephalin Rattus norvegicus 107-117 19951300-17 2010 These results suggest that enkephalin via the delta-opioid system can function locally within a positive feedback circuit to cause ethanol intake to escalate and ultimately contribute to the abuse of ethanol. Ethanol 131-138 proenkephalin Rattus norvegicus 27-37 19951300-17 2010 These results suggest that enkephalin via the delta-opioid system can function locally within a positive feedback circuit to cause ethanol intake to escalate and ultimately contribute to the abuse of ethanol. Ethanol 200-207 proenkephalin Rattus norvegicus 27-37 19951300-19 2010 Naltrexone therapy for alcoholism may act, in part, by blocking the enkephalin-triggered positive feedback cycle. Naltrexone 0-10 proenkephalin Rattus norvegicus 68-78 19666014-5 2009 Before this larger meal, these rats with elevated TG consistently exhibited higher expression levels and synthesis of the orexigenic peptides, enkephalin, orexin and melanin-concentrating hormone, as revealed using real-time quantitative PCR, radiolabeled in situ hybridization, and immunofluorescence histochemistry. Triglycerides 50-52 proenkephalin Rattus norvegicus 143-153 20007733-2 2010 In this study, we determined whether the spontaneous pain and increased pNR1 expression induced by NMDA injection are reduced by IT injection of either clonidine or the mu-opioid receptor agonist, [D-Ala2, NMe-Phe4, Gly-ol5]-enkephalin (DAMGO). N-Methylaspartate 99-103 proenkephalin Rattus norvegicus 225-235 20007733-2 2010 In this study, we determined whether the spontaneous pain and increased pNR1 expression induced by NMDA injection are reduced by IT injection of either clonidine or the mu-opioid receptor agonist, [D-Ala2, NMe-Phe4, Gly-ol5]-enkephalin (DAMGO). Clonidine 152-161 proenkephalin Rattus norvegicus 225-235 19558427-12 2009 Furthermore, in vitro application of [D-Ala(2), N-MePhe(4), Gly(5)-Ol] enkephalin (DAMGO) suppressed the enhanced excitability of colon neurons from rats with CVH. n-mephe 48-55 proenkephalin Rattus norvegicus 71-81 19558427-12 2009 Furthermore, in vitro application of [D-Ala(2), N-MePhe(4), Gly(5)-Ol] enkephalin (DAMGO) suppressed the enhanced excitability of colon neurons from rats with CVH. cvh 159-162 proenkephalin Rattus norvegicus 71-81 19596017-0 2010 Morphine-induced conditioned place preference in rats is inhibited by electroacupuncture at 2 Hz: role of enkephalin in the nucleus accumbens. Morphine 0-8 proenkephalin Rattus norvegicus 106-116 19782113-7 2009 This enhanced ENK expression in the PVN, VTA and CeA was demonstrated with real-time quantitative polymerase chain reaction and confirmed in separate groups using radiolabeled and digoxigenin-labeled in situ hybridization. Digoxigenin 180-191 proenkephalin Rattus norvegicus 14-17 19711397-3 2009 An anti-enkephalin antibody, which recognized Leu-, Met-, and Phe-Arg-Met-enkephalin, labeled the dorsolateral funiculus and numerous puncta in laminae I-III and V of the dorsal horn. Leucine 46-49 proenkephalin Rattus norvegicus 8-18 19711397-3 2009 An anti-enkephalin antibody, which recognized Leu-, Met-, and Phe-Arg-Met-enkephalin, labeled the dorsolateral funiculus and numerous puncta in laminae I-III and V of the dorsal horn. met-, and 52-61 proenkephalin Rattus norvegicus 8-18 19647755-9 2009 In light of other studies showing ethanol intake to increase enkephalin expression in the NAc, the present finding of enkephalin-induced ethanol intake suggests the existence of a positive feedback loop that fosters alcohol abuse. Ethanol 34-41 proenkephalin Rattus norvegicus 61-71 19647755-9 2009 In light of other studies showing ethanol intake to increase enkephalin expression in the NAc, the present finding of enkephalin-induced ethanol intake suggests the existence of a positive feedback loop that fosters alcohol abuse. Ethanol 34-41 proenkephalin Rattus norvegicus 118-128 19647755-9 2009 In light of other studies showing ethanol intake to increase enkephalin expression in the NAc, the present finding of enkephalin-induced ethanol intake suggests the existence of a positive feedback loop that fosters alcohol abuse. Ethanol 137-144 proenkephalin Rattus norvegicus 118-128 19118628-6 2009 Additionally, L-DOPA-induced elevations in striatal pre-proenkephalin-A (PPE-A) (but not PPE-B, phospho[Thr(34)]DARPP-32, D1, and D2 receptor mRNA or D3 receptor levels) were reduced in S33084 treated animals. Levodopa 14-20 proenkephalin Rattus norvegicus 56-71 19534760-1 2009 BACKGROUND: Delta opioid peptide [D-ala2,D-leU5]enkephalin (DADLE) induces hibernation in summer ground squirrels, and enhances preservation and survival of isolated or transplanted lungs and hearts. Peptides 25-32 proenkephalin Rattus norvegicus 48-58 19494155-4 2009 As expected for a partial agonist, subsaturating concentrations of buprenorphine decreased the [Met](5)enkephalin (ME)-induced hyperpolarization or outward current. Buprenorphine 67-80 proenkephalin Rattus norvegicus 103-113 19168708-6 2009 The selective DOR agonist [D-Pen(2),D-Pen(5)]-enkephalin, having no apparent effect on glutamatergic excitatory postsynaptic current (EPSC) in neurons from control rats, produced a significant, dose-dependent inhibition of the synaptic current in neurons from those morphine-treated rats. d-pen( 27-33 proenkephalin Rattus norvegicus 46-56 19458216-11 2009 Furthermore, in virgin rats, allopregnanolone treatment increased, whereas in pregnant rats finasteride decreased proenkephalin-A mRNA expression in the NTS. Finasteride 92-103 proenkephalin Rattus norvegicus 114-129 19376576-0 2009 Enkephalin derivative, cyclo[Nepsilon,Nbeta-carbonyl-D-Lys2, Dap5] enkephalinamide (cUENK6), induces a highly potent antinociception in rats. cyclo[nepsilon 23-37 proenkephalin Rattus norvegicus 0-10 19376576-0 2009 Enkephalin derivative, cyclo[Nepsilon,Nbeta-carbonyl-D-Lys2, Dap5] enkephalinamide (cUENK6), induces a highly potent antinociception in rats. nbeta-carbonyl-d-lys2 38-59 proenkephalin Rattus norvegicus 0-10 19376576-0 2009 Enkephalin derivative, cyclo[Nepsilon,Nbeta-carbonyl-D-Lys2, Dap5] enkephalinamide (cUENK6), induces a highly potent antinociception in rats. dap5] enkephalinamide 61-82 proenkephalin Rattus norvegicus 0-10 19376576-0 2009 Enkephalin derivative, cyclo[Nepsilon,Nbeta-carbonyl-D-Lys2, Dap5] enkephalinamide (cUENK6), induces a highly potent antinociception in rats. cuenk6 84-90 proenkephalin Rattus norvegicus 0-10 19376576-1 2009 The aim of the study was to evaluate whether the newly synthesized analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2), Dap(5)] enkephalinamide (cUENK6), a highly potent mu- (guinea pig ileum assay) and delta-receptors (mouse vas deferens assay) ligand, induces an antinociceptive effect in the hot-plate test and tail-immersion test after intracerebroventricular administration. n(beta 106-112 proenkephalin Rattus norvegicus 77-87 19376576-1 2009 The aim of the study was to evaluate whether the newly synthesized analog of enkephalin, cyclo[N(epsilon),N(beta)-carbonyl-D-Lys(2), Dap(5)] enkephalinamide (cUENK6), a highly potent mu- (guinea pig ileum assay) and delta-receptors (mouse vas deferens assay) ligand, induces an antinociceptive effect in the hot-plate test and tail-immersion test after intracerebroventricular administration. carbonyl 114-122 proenkephalin Rattus norvegicus 77-87 19244586-2 2009 Because (d-Ala(2),N-Me-Phe(4),Gly-ol)-enkephalin (DAMGO), a mu-receptor agonist, injected intravenously and locally in the caudal medullary raphe region (cMRR) decreased the ventilatory response to hypoxia and hypercapnia, we hypothesized that these treatments could inhibit sigh responses to these chemical stimuli. N-Methyl-L-phenylalanine 18-26 proenkephalin Rattus norvegicus 38-48 19164277-11 2009 Moreover we showed that injecting synthetic PENK 114-133 and PENK 239-260 into the striatum robustly increased glutamate release in this region. Glutamic Acid 111-120 proenkephalin Rattus norvegicus 44-48 19164277-11 2009 Moreover we showed that injecting synthetic PENK 114-133 and PENK 239-260 into the striatum robustly increased glutamate release in this region. Glutamic Acid 111-120 proenkephalin Rattus norvegicus 61-65 19168708-6 2009 The selective DOR agonist [D-Pen(2),D-Pen(5)]-enkephalin, having no apparent effect on glutamatergic excitatory postsynaptic current (EPSC) in neurons from control rats, produced a significant, dose-dependent inhibition of the synaptic current in neurons from those morphine-treated rats. Morphine 266-274 proenkephalin Rattus norvegicus 46-56 19244528-4 2009 CXCR4-induced G alpha(i)/G betagamma activities were suppressed after 24 h treatment of cortical neurons with morphine or the selective mu-opioid agonist DAMGO (D-Ala2-N-Me-Phe(4)-glycol(5)-enkephalin), as shown by analysis of downstream targets of CXCR4 (i.e., cAMP, Akt, and ERK1/2). Morphine 110-118 proenkephalin Rattus norvegicus 190-200 19100723-1 2009 Opiate-induced alterations in the gene expression of the opioid propeptides prodynorphin (PDYN) and proenkephalin (PENK) in the brain have previously been described. Opiate Alkaloids 0-6 proenkephalin Rattus norvegicus 100-113 19100723-1 2009 Opiate-induced alterations in the gene expression of the opioid propeptides prodynorphin (PDYN) and proenkephalin (PENK) in the brain have previously been described. Opiate Alkaloids 0-6 proenkephalin Rattus norvegicus 115-119 19100723-6 2009 In addition, to dissociate pharmacological effects of heroin from those produced by motivational processes driving active heroin intake on the PDYN and PENK gene expression, we compared effects of response-dependent (contingent) and response-independent (noncontingent--"yoked" heroin control) heroin administration. Heroin 122-128 proenkephalin Rattus norvegicus 152-156 19100723-6 2009 In addition, to dissociate pharmacological effects of heroin from those produced by motivational processes driving active heroin intake on the PDYN and PENK gene expression, we compared effects of response-dependent (contingent) and response-independent (noncontingent--"yoked" heroin control) heroin administration. Heroin 122-128 proenkephalin Rattus norvegicus 152-156 19244528-4 2009 CXCR4-induced G alpha(i)/G betagamma activities were suppressed after 24 h treatment of cortical neurons with morphine or the selective mu-opioid agonist DAMGO (D-Ala2-N-Me-Phe(4)-glycol(5)-enkephalin), as shown by analysis of downstream targets of CXCR4 (i.e., cAMP, Akt, and ERK1/2). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 154-159 proenkephalin Rattus norvegicus 190-200 18761380-0 2009 Transgene-mediated enkephalin expression attenuates signs of naloxone-precipitated morphine withdrawal in rats with neuropathic pain. Naloxone 61-69 proenkephalin Rattus norvegicus 19-29 18761380-0 2009 Transgene-mediated enkephalin expression attenuates signs of naloxone-precipitated morphine withdrawal in rats with neuropathic pain. Morphine 83-91 proenkephalin Rattus norvegicus 19-29 18761380-2 2009 Previous studies have shown that there is a decrease in met-enkephalin levels in states of morphine physical dependence, and that increasing enkephalin during opiate physical withdrawal ameliorates the severity of the morphine withdrawal syndrome. Morphine 91-99 proenkephalin Rattus norvegicus 60-70 18761380-2 2009 Previous studies have shown that there is a decrease in met-enkephalin levels in states of morphine physical dependence, and that increasing enkephalin during opiate physical withdrawal ameliorates the severity of the morphine withdrawal syndrome. Morphine 218-226 proenkephalin Rattus norvegicus 141-151 20377371-5 2009 Functionally, enkephalin vector-treated animals showed reductions in bladder hyperactivity and nociceptive behavior induced by intravesical application of capsaicin; however, vector-mediated expression of enkephalin did not alter normal voiding. Capsaicin 155-164 proenkephalin Rattus norvegicus 14-24 20377371-6 2009 This antinociceptive effect of enkephalin gene therapy was antagonized by naloxone hydrochloride administration. Naloxone 74-96 proenkephalin Rattus norvegicus 31-41 18588953-4 2008 The inhibition of opioid binding was further investigated using other synthetic and natural mu-opioid ligands such as [D-Ala(2),(NMe)Phe(4),Gly(5)-ol]enkephalin (DAMGO), morphine and naloxone. methylamine 129-133 proenkephalin Rattus norvegicus 150-160 18938155-3 2008 An animal model of vincristine-induced sensory neuropathy was developed after repeated intraperitoneal injection in male rats and used in the present work to study the effects of PL37, an orally active complete dual inhibitor of enkephalin-catabolizing enzymes, on mechanical hypersensitivity and allodynia and on cold allodynia. PL37 179-183 proenkephalin Rattus norvegicus 229-239 18216773-1 2008 Amygdala opioids such as enkephalin appear to play some role in the control of anxiety and the anxiolytic effects of benzodiazepines, although the opioid receptor subtypes mediating such effects are unclear. Benzodiazepines 117-132 proenkephalin Rattus norvegicus 25-35 18216773-4 2008 Either the MOR agonist [D-Ala(2), NMe-Phe(4), Gly-ol(5)]-enkephalin (DAMGO), or the MOR antagonists Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP) or beta-funaltrexamine (FNA) were bilaterally infused into the CEA of rats before testing. nme-phe 34-41 proenkephalin Rattus norvegicus 57-67 18216773-4 2008 Either the MOR agonist [D-Ala(2), NMe-Phe(4), Gly-ol(5)]-enkephalin (DAMGO), or the MOR antagonists Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP) or beta-funaltrexamine (FNA) were bilaterally infused into the CEA of rats before testing. gly-ol 46-52 proenkephalin Rattus norvegicus 57-67 18587007-4 2008 On stimulation with selected agonists ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin, enkephalin-heptapeptide Tyr-Gly-Gly-Phe-Met-Arg-Phe, morphine, and methadone), surface density of the MOP decreased, whereas the lateral mobility increased. Morphine 135-143 proenkephalin Rattus norvegicus 82-92 18587007-4 2008 On stimulation with selected agonists ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin, enkephalin-heptapeptide Tyr-Gly-Gly-Phe-Met-Arg-Phe, morphine, and methadone), surface density of the MOP decreased, whereas the lateral mobility increased. Methadone 149-158 proenkephalin Rattus norvegicus 82-92 18674887-9 2008 Other significant THC-induced effects were confined to the NAc - increased anandamide, decreased Met-enkephalin and decreased microORs. Dronabinol 18-21 proenkephalin Rattus norvegicus 101-111 18588953-4 2008 The inhibition of opioid binding was further investigated using other synthetic and natural mu-opioid ligands such as [D-Ala(2),(NMe)Phe(4),Gly(5)-ol]enkephalin (DAMGO), morphine and naloxone. Phenylalanine 133-136 proenkephalin Rattus norvegicus 150-160 18499626-4 2008 administration of endomorphin-1 and -2 on nociception assays and G protein activation with those of [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO), a highly effective peptidic mu-opioid receptor agonist. N-Methyl-L-phenylalanine 110-118 proenkephalin Rattus norvegicus 133-143 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. d-pen 33-38 proenkephalin Rattus norvegicus 52-62 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. d-pen 43-48 proenkephalin Rattus norvegicus 52-62 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. N-Methylaspartate 168-172 proenkephalin Rattus norvegicus 52-62 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. deltorphin II, Ala(2)- 194-207 proenkephalin Rattus norvegicus 52-62 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. Remifentanil 237-249 proenkephalin Rattus norvegicus 52-62 18648240-8 2008 Selective delta-opioid agonists [D-Pen(2), D-Pen(5)]enkephalin and deltorphin II displayed a similar bell-shaped concentration-response relation for the enhancement of NMDA responses, and 10 nM deltorphin II occluded the effects of 4 nM remifentanil on NMDA responses. N-Methylaspartate 253-257 proenkephalin Rattus norvegicus 52-62 18492947-0 2008 Antinociception produced by 14,15-epoxyeicosatrienoic acid is mediated by the activation of beta-endorphin and met-enkephalin in the rat ventrolateral periaqueductal gray. 14,15-epoxy-5,8,11-eicosatrienoic acid 28-58 proenkephalin Rattus norvegicus 115-125 18572425-3 2008 Rats were injected with different doses (0, 0.05, 0.5 or 5 microg/0.5 microl) of [3H]-[D-Ala2,MePhe4,Gly-ol5]-enkephalin (DAMGO) into the dorsal striatum daily (Exp. Tritium 82-84 proenkephalin Rattus norvegicus 110-120 18572425-3 2008 Rats were injected with different doses (0, 0.05, 0.5 or 5 microg/0.5 microl) of [3H]-[D-Ala2,MePhe4,Gly-ol5]-enkephalin (DAMGO) into the dorsal striatum daily (Exp. mephe4 94-100 proenkephalin Rattus norvegicus 110-120 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. n-mephe4 47-55 proenkephalin Rattus norvegicus 65-75 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. gly5-ol 56-63 proenkephalin Rattus norvegicus 65-75 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. acetate salt 76-88 proenkephalin Rattus norvegicus 65-75 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. Sucrose 101-108 proenkephalin Rattus norvegicus 65-75 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. Sucrose 278-285 proenkephalin Rattus norvegicus 65-75 18525010-5 2008 However, although the mu opioid DAMGO, [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin acetate salt, stimulated sucrose intake at all four CNS sites, the ventral tegmental area was the only sensitive site for a direct effect of insulin to antagonize acute (60 min) micro opioid-stimulated sucrose feeding: sucrose intake was 53+/-8% of DAMGO-induced feeding, when insulin was coadministered with DAMGO. Sucrose 278-285 proenkephalin Rattus norvegicus 65-75 18579164-4 2008 In this study, we determined the role of delta-opioid receptors expressed on TRPV1 sensory neurons in the antinociceptive effect of the delta-opioid receptor agonists [D-Pen(2),D-Pen(5)]-enkephalin and [D-Ala(2),Glu(4)]-deltorphin. d-pen 168-173 proenkephalin Rattus norvegicus 187-197 18579164-4 2008 In this study, we determined the role of delta-opioid receptors expressed on TRPV1 sensory neurons in the antinociceptive effect of the delta-opioid receptor agonists [D-Pen(2),D-Pen(5)]-enkephalin and [D-Ala(2),Glu(4)]-deltorphin. d-pen 177-182 proenkephalin Rattus norvegicus 187-197 18579164-4 2008 In this study, we determined the role of delta-opioid receptors expressed on TRPV1 sensory neurons in the antinociceptive effect of the delta-opioid receptor agonists [D-Pen(2),D-Pen(5)]-enkephalin and [D-Ala(2),Glu(4)]-deltorphin. Glutamic Acid 212-215 proenkephalin Rattus norvegicus 187-197 18579164-4 2008 In this study, we determined the role of delta-opioid receptors expressed on TRPV1 sensory neurons in the antinociceptive effect of the delta-opioid receptor agonists [D-Pen(2),D-Pen(5)]-enkephalin and [D-Ala(2),Glu(4)]-deltorphin. deltorphin 220-230 proenkephalin Rattus norvegicus 187-197 18579164-9 2008 Interestingly, intrathecal injection of [D-Pen(2),d-Pen(5)]-enkephalin or [D-Ala(2),Glu(4)]-deltorphin produced a large and prolonged increase in the nociceptive threshold in RTX-treated rats. [d-pen 40-46 proenkephalin Rattus norvegicus 60-70 18579164-9 2008 Interestingly, intrathecal injection of [D-Pen(2),d-Pen(5)]-enkephalin or [D-Ala(2),Glu(4)]-deltorphin produced a large and prolonged increase in the nociceptive threshold in RTX-treated rats. resiniferatoxin 175-178 proenkephalin Rattus norvegicus 60-70 18434033-4 2008 The delta-opioid agonists [d-Pen(2),d-Pen(5)]-enkephalin (DPDPE) and deltorphin II produced a greater inhibition of high voltage-activated I(Ca) in IB(4)-negative than IB(4)-positive neurons. d-pen 27-32 proenkephalin Rattus norvegicus 46-56 18343590-12 2008 Tyr-d-Ala-Gly-N-Me-Phe-Gly-ol enkephalin (DAMGO), a mu-opioid receptor agonist, conversely, silenced VTA GABAergic neurons and inhibited IPSCs. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 42-47 proenkephalin Rattus norvegicus 30-40 18359165-3 2008 Sciatic nerve ligation suppressed a place preference induced by the selective mu-opioid receptor agonist [d-Ala(2), N-MePhe(4), Gly-ol(5)] enkephalin (DAMGO) and reduced both the increase in the level of extracellular dopamine by s.c. morphine in the nucleus accumbens and guanosine-5"-o-(3-[(35)S]thio) triphosphate ([(35)S]GTPgammaS) binding to membranes of the ventral tegmental area (VTA) induced by DAMGO. n-mephe 116-123 proenkephalin Rattus norvegicus 139-149 18359165-3 2008 Sciatic nerve ligation suppressed a place preference induced by the selective mu-opioid receptor agonist [d-Ala(2), N-MePhe(4), Gly-ol(5)] enkephalin (DAMGO) and reduced both the increase in the level of extracellular dopamine by s.c. morphine in the nucleus accumbens and guanosine-5"-o-(3-[(35)S]thio) triphosphate ([(35)S]GTPgammaS) binding to membranes of the ventral tegmental area (VTA) induced by DAMGO. gly-ol 128-134 proenkephalin Rattus norvegicus 139-149 18045517-1 2007 OBJECTIVE: To provide a sound cell source for further ex-vivo gene therapy for chronic pain, we attempt to develop an immortalized rat astrocyte cell line that expresses enkephalin regulated by doxycycline. Doxycycline 194-205 proenkephalin Rattus norvegicus 170-180 18441391-8 2008 The mu opioid ligand - [(3)H]-(D-Ala(2), -N-MePhe(4), Glyol(5)) Enkephalin was used to obtain binding characteristics of the control and TAA rat brain membranes. Tritium 23-29 proenkephalin Rattus norvegicus 64-74 18441391-8 2008 The mu opioid ligand - [(3)H]-(D-Ala(2), -N-MePhe(4), Glyol(5)) Enkephalin was used to obtain binding characteristics of the control and TAA rat brain membranes. -n-mephe 41-49 proenkephalin Rattus norvegicus 64-74 18441391-8 2008 The mu opioid ligand - [(3)H]-(D-Ala(2), -N-MePhe(4), Glyol(5)) Enkephalin was used to obtain binding characteristics of the control and TAA rat brain membranes. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 54-59 proenkephalin Rattus norvegicus 64-74 18296865-1 2008 Previous in vitro studies have shown that the degradation of [Leu(5)]enkephalin during incubation with cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. amastatin 209-218 proenkephalin Rattus norvegicus 69-79 18296865-1 2008 Previous in vitro studies have shown that the degradation of [Leu(5)]enkephalin during incubation with cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. phosphoramidon 235-249 proenkephalin Rattus norvegicus 69-79 17720257-7 2007 Furthermore, repeated amphetamine administration increased drug-induced Fos expression in enkephalin-positive, but not enkephalin-negative, neurons in nucleus accumbens. Amphetamine 22-33 proenkephalin Rattus norvegicus 90-100 17720257-8 2007 We conclude that repeated amphetamine administration outside the home cage recruits the activation of enkephalin-containing nucleus accumbens neurons during sensitized amphetamine-induced psychomotor activity. Amphetamine 26-37 proenkephalin Rattus norvegicus 102-112 17720257-8 2007 We conclude that repeated amphetamine administration outside the home cage recruits the activation of enkephalin-containing nucleus accumbens neurons during sensitized amphetamine-induced psychomotor activity. Amphetamine 168-179 proenkephalin Rattus norvegicus 102-112 18082882-5 2008 Measurements of immunoreactive (ir) Met-enkephalin-Arg6Phe7 (MEAP) and dynorphin B (DYNB) peptide levels in the pituitary gland and in a number of brain areas, were performed at three and 10 weeks of age, respectively. arg6phe7 51-59 proenkephalin Rattus norvegicus 40-50 18227978-0 2008 Ethanol-induced changes in proenkephalin mRNA expression in the rat nigrostriatal pathway. Ethanol 0-7 proenkephalin Rattus norvegicus 27-40 18227978-4 2008 The aim of this work was to study the effects of acute ethanol administration on proenkephalin (proenk) mRNA expression in the rat substantia nigra and caudate-putamen (CP) for up to 24 h post treatment. Ethanol 55-62 proenkephalin Rattus norvegicus 81-94 18227978-9 2008 Alterations in enkephalin expression in the substantia nigra and CP in response to ethanol exposure could be involved in the mechanisms underlying brain sensitivity to the drug. Ethanol 83-90 proenkephalin Rattus norvegicus 15-25 17467904-12 2007 In depleted brain membranes, the kappa(2b)-ligand, leu-enkephalin, prevented oxycodone"s displacement of high-affinity [(3)H]bremazocine binding, suggesting the notion that oxycodone is a kappa(2b)-opioid ligand. Oxycodone 77-86 proenkephalin Rattus norvegicus 55-65 17467904-12 2007 In depleted brain membranes, the kappa(2b)-ligand, leu-enkephalin, prevented oxycodone"s displacement of high-affinity [(3)H]bremazocine binding, suggesting the notion that oxycodone is a kappa(2b)-opioid ligand. bremazocine 125-136 proenkephalin Rattus norvegicus 55-65 17467904-12 2007 In depleted brain membranes, the kappa(2b)-ligand, leu-enkephalin, prevented oxycodone"s displacement of high-affinity [(3)H]bremazocine binding, suggesting the notion that oxycodone is a kappa(2b)-opioid ligand. Oxycodone 173-182 proenkephalin Rattus norvegicus 55-65 18045517-2 2007 METHODS: Retrovirus infection method was employed to develop an immortalized rat astrocyte cell line that could express enkephalin regulated by doxycycline. Doxycycline 144-155 proenkephalin Rattus norvegicus 120-130 18045517-4 2007 RESULTS: IAC carrying Tet-on system transfected with preproenkephalin gene could secrete enkephalin that was regulated by doxycycline in a dose-dependent manner and hPPE gene activation could be repeated in on-off-on cycles through administration or removal of doxycycline. tetramethylenedisulfotetramine 22-25 proenkephalin Rattus norvegicus 59-69 18045517-4 2007 RESULTS: IAC carrying Tet-on system transfected with preproenkephalin gene could secrete enkephalin that was regulated by doxycycline in a dose-dependent manner and hPPE gene activation could be repeated in on-off-on cycles through administration or removal of doxycycline. Doxycycline 122-133 proenkephalin Rattus norvegicus 59-69 18045517-4 2007 RESULTS: IAC carrying Tet-on system transfected with preproenkephalin gene could secrete enkephalin that was regulated by doxycycline in a dose-dependent manner and hPPE gene activation could be repeated in on-off-on cycles through administration or removal of doxycycline. Doxycycline 261-272 proenkephalin Rattus norvegicus 59-69 18045517-5 2007 CONCLUSION: An immortalized rat astrocyte cell line that secrete enkephalin under the control of doxycycline is established successfully, which provides a research basis for transgenic cell transplantation for analgesia. Doxycycline 97-108 proenkephalin Rattus norvegicus 65-75 17949415-4 2007 In the afternoon, the NK(1)R antagonist response required the suppression of the enkephalin/MOR inhibitory control of acetylcholine release by betafunaltrexamine. Acetylcholine 118-131 proenkephalin Rattus norvegicus 81-91 17949415-4 2007 In the afternoon, the NK(1)R antagonist response required the suppression of the enkephalin/MOR inhibitory control of acetylcholine release by betafunaltrexamine. beta-funaltrexamine 143-161 proenkephalin Rattus norvegicus 81-91 17604950-5 2007 END and ENK release triggered by a CXCR1/2 ligand in vitro was dependent on the presence of cytochalasin B (CyB) and on p38 MAPK, but not on p42/44 MAPK. Cytochalasin B 92-106 proenkephalin Rattus norvegicus 8-11 17604950-6 2007 In addition, translocation of END and ENK containing primary granules to submembranous regions of the cell was abolished by the p38 MAPK inhibitor SB203580. SB 203580 147-155 proenkephalin Rattus norvegicus 38-41 17604950-5 2007 END and ENK release triggered by a CXCR1/2 ligand in vitro was dependent on the presence of cytochalasin B (CyB) and on p38 MAPK, but not on p42/44 MAPK. Cytochalasin B 108-111 proenkephalin Rattus norvegicus 8-11 17704092-2 2007 However, the DOP agonist [d-Ala(2), d-Leu(5)]enkephalin (DADLE) does not produce neuroprotection in severe forebrain ischaemia. Diethylhexyl Phthalate 13-16 proenkephalin Rattus norvegicus 45-55 17898143-4 2007 Using whole cell patch-clamp recordings from neurons within the NTS, the mu opioid receptor (MOR) agonist [D-Ala(2), N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO, 100 nM) hyperpolarized a proportion of neurons in the medial, dorsomedial and dorsolateral NTS, whereas no postsynaptic responses were observed in remaining subdivisions. N-Methyl-L-phenylalanine 117-125 proenkephalin Rattus norvegicus 140-150 17898143-4 2007 Using whole cell patch-clamp recordings from neurons within the NTS, the mu opioid receptor (MOR) agonist [D-Ala(2), N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO, 100 nM) hyperpolarized a proportion of neurons in the medial, dorsomedial and dorsolateral NTS, whereas no postsynaptic responses were observed in remaining subdivisions. gly(5)-ol] 129-139 proenkephalin Rattus norvegicus 140-150 17722034-1 2007 The lateral subdivision of the central nucleus of the amygdala (CeA) comprises two groups of gamma-aminobutyric acid (GABA) neurons that express corticotrophin-releasing hormone (CRH) and enkephalin. gamma-Aminobutyric Acid 93-116 proenkephalin Rattus norvegicus 188-198 17722034-1 2007 The lateral subdivision of the central nucleus of the amygdala (CeA) comprises two groups of gamma-aminobutyric acid (GABA) neurons that express corticotrophin-releasing hormone (CRH) and enkephalin. gamma-Aminobutyric Acid 118-122 proenkephalin Rattus norvegicus 188-198 17845912-5 2007 dose-dependently and completely inhibited writhing, being 24-598-fold more potent, depending on the administration route, than two selective MOR agonists, the enkephalin analogue [D-Ala(2),N-Me-Phe(4),Gly-ol(5)]enkephalin (DAMGO) and morphine. N-Methyl-L-phenylalanine 189-197 proenkephalin Rattus norvegicus 159-169 17763995-3 2007 At the same time, leucine-enkephalin produced reversible increases in the amplitude of the inward potassium current. Potassium 98-107 proenkephalin Rattus norvegicus 26-36 17878706-1 2007 Previous in vitro studies have shown that the degradation of [Met(5)]enkephalin-Arg(6)-Phe(7) during incubation with cerebral membrane preparations is largely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. Phenylalanine 85-90 proenkephalin Rattus norvegicus 69-79 17878706-1 2007 Previous in vitro studies have shown that the degradation of [Met(5)]enkephalin-Arg(6)-Phe(7) during incubation with cerebral membrane preparations is largely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. amastatin 213-222 proenkephalin Rattus norvegicus 69-79 17878706-1 2007 Previous in vitro studies have shown that the degradation of [Met(5)]enkephalin-Arg(6)-Phe(7) during incubation with cerebral membrane preparations is largely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. Captopril 224-233 proenkephalin Rattus norvegicus 69-79 17878706-1 2007 Previous in vitro studies have shown that the degradation of [Met(5)]enkephalin-Arg(6)-Phe(7) during incubation with cerebral membrane preparations is largely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon. phosphoramidon 239-253 proenkephalin Rattus norvegicus 69-79 17878706-2 2007 The present in vivo study shows that the inhibitory effect of [Met(5)]enkephalin-Arg(6)-Phe(7) administered intra-third-ventricularly on the tail-flick response was increased more than 1000-fold by the intra-third-ventricular pretreatment with three peptidase inhibitors. Arginine 81-84 proenkephalin Rattus norvegicus 70-80 17878706-2 2007 The present in vivo study shows that the inhibitory effect of [Met(5)]enkephalin-Arg(6)-Phe(7) administered intra-third-ventricularly on the tail-flick response was increased more than 1000-fold by the intra-third-ventricular pretreatment with three peptidase inhibitors. Phenylalanine 88-91 proenkephalin Rattus norvegicus 70-80 17878706-3 2007 The antinociceptive effect produced by the [Met(5)]enkephalin-Arg(6)-Phe(7) in rats pretreated with any combination of two peptidase inhibitors was significantly smaller than that in rats pretreated with three peptidase inhibitors, indicating that any residual single peptidase could inactivate significant amounts of the [Met(5)]enkephalin-Arg(6)-Phe(7). Phenylalanine 67-72 proenkephalin Rattus norvegicus 51-61 17878706-3 2007 The antinociceptive effect produced by the [Met(5)]enkephalin-Arg(6)-Phe(7) in rats pretreated with any combination of two peptidase inhibitors was significantly smaller than that in rats pretreated with three peptidase inhibitors, indicating that any residual single peptidase could inactivate significant amounts of the [Met(5)]enkephalin-Arg(6)-Phe(7). Phenylalanine 68-72 proenkephalin Rattus norvegicus 51-61 17763995-4 2007 These results provide evidence that the inhibitory effect of leucine-enkephalin at the level of respiratory center neurons is at least in part explained by its stimulatory action on the inward potassium current but is not associated with modulation of the potassium A current. Potassium 193-202 proenkephalin Rattus norvegicus 69-79 17672854-3 2007 The administration of 3NP reduced GABA contents and also mRNA levels for several markers of striatal GABAergic projection neurons, including proenkephalin (PENK), substance P (SP) and neuronal-specific enolase (NSE). 3np 22-25 proenkephalin Rattus norvegicus 141-154 17672854-5 2007 The administration of CBD, but not ACEA or HU-308, completely reversed 3NP-induced reductions in GABA contents and mRNA levels for SP, NSE and SOD-2, and partially attenuated those found in SOD-1 and PENK. Cannabidiol 22-25 proenkephalin Rattus norvegicus 200-204 17672854-3 2007 The administration of 3NP reduced GABA contents and also mRNA levels for several markers of striatal GABAergic projection neurons, including proenkephalin (PENK), substance P (SP) and neuronal-specific enolase (NSE). 3np 22-25 proenkephalin Rattus norvegicus 156-160 17063152-7 2007 These results point to a role for the mu-opioid receptor, TH, PENK, CRF, CB1-R, and 5-HTT genes in specific brain regions in the modulation of neuroadaptative mechanisms associated to the decrease of ethanol intake induced by naltrexone. Ethanol 200-207 proenkephalin Rattus norvegicus 62-66 17577392-4 2007 The ethanol-induced excitation of DA neurons is considerably attenuated by DAMGO (Tyr-d-Ala-Gly-N-Me-Phe-Gly-ol enkephalin), a mu-opioid agonist that suppresses firing of GABAergic neurons, or by naloxone, a general opioid antagonist. Ethanol 4-11 proenkephalin Rattus norvegicus 112-122 17577392-4 2007 The ethanol-induced excitation of DA neurons is considerably attenuated by DAMGO (Tyr-d-Ala-Gly-N-Me-Phe-Gly-ol enkephalin), a mu-opioid agonist that suppresses firing of GABAergic neurons, or by naloxone, a general opioid antagonist. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 75-80 proenkephalin Rattus norvegicus 112-122 17577392-4 2007 The ethanol-induced excitation of DA neurons is considerably attenuated by DAMGO (Tyr-d-Ala-Gly-N-Me-Phe-Gly-ol enkephalin), a mu-opioid agonist that suppresses firing of GABAergic neurons, or by naloxone, a general opioid antagonist. Naloxone 196-204 proenkephalin Rattus norvegicus 112-122 17574751-1 2007 The objective of this study was to determine if prenatal cocaine affects the levels of prodynorphin and proenkephalin mRNA in male and female adolescent rats. Cocaine 57-64 proenkephalin Rattus norvegicus 104-117 17379421-5 2007 We then investigated whether peripheral application of a MOR agonist, D-Ala2, N-Me-Phe4, Gly5-ol-enkephalin acetate salt (DAMGO), attenuates masseter nociception induced by masseteric infusion of hypertonic saline (HS) in lightly anesthetized rats. n-me-phe4 78-87 proenkephalin Rattus norvegicus 97-107 17537495-0 2007 Changes in Proenkephalin mRNA expression in forebrain areas after amphetamine-induced behavioural sensitization. Amphetamine 66-77 proenkephalin Rattus norvegicus 11-24 17537495-4 2007 In order to investigate a possible involvement of opioid systems in amphetamine (AMPH) behavioural sensitization, we studied the AMPH-induced changes in Proenkephalin (Pro-Enk) mRNA expression in forebrain areas in both drug-naive and AMPH-sensitized rats. Amphetamine 129-133 proenkephalin Rattus norvegicus 153-166 17537495-4 2007 In order to investigate a possible involvement of opioid systems in amphetamine (AMPH) behavioural sensitization, we studied the AMPH-induced changes in Proenkephalin (Pro-Enk) mRNA expression in forebrain areas in both drug-naive and AMPH-sensitized rats. Amphetamine 129-133 proenkephalin Rattus norvegicus 172-175 17537495-4 2007 In order to investigate a possible involvement of opioid systems in amphetamine (AMPH) behavioural sensitization, we studied the AMPH-induced changes in Proenkephalin (Pro-Enk) mRNA expression in forebrain areas in both drug-naive and AMPH-sensitized rats. Amphetamine 129-133 proenkephalin Rattus norvegicus 153-166 17537495-4 2007 In order to investigate a possible involvement of opioid systems in amphetamine (AMPH) behavioural sensitization, we studied the AMPH-induced changes in Proenkephalin (Pro-Enk) mRNA expression in forebrain areas in both drug-naive and AMPH-sensitized rats. Amphetamine 129-133 proenkephalin Rattus norvegicus 172-175 17537495-7 2007 AMPH injection induced an increase in Pro-Enk mRNA expression in the nucleus accumbens and the medial-posterior caudate-putamen in drug-naive rats. Amphetamine 0-4 proenkephalin Rattus norvegicus 38-45 17537495-8 2007 Challenge with AMPH to rats injected 1 week earlier with AMPH induced motor sensitization and increased and decreased Pro-Enk mRNA expression in the prefrontal cortex and the anterior medial caudate-putamen, respectively. Amphetamine 15-19 proenkephalin Rattus norvegicus 122-125 17537495-8 2007 Challenge with AMPH to rats injected 1 week earlier with AMPH induced motor sensitization and increased and decreased Pro-Enk mRNA expression in the prefrontal cortex and the anterior medial caudate-putamen, respectively. Amphetamine 57-61 proenkephalin Rattus norvegicus 122-125 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. n-mephe 75-82 proenkephalin Rattus norvegicus 96-106 17244622-5 2007 Furthermore, expression of cathepsin L with PE resulted in increased amounts of nicotine-induced secretion of (Met)enkephalin. Nicotine 80-88 proenkephalin Rattus norvegicus 44-46 17244622-5 2007 Furthermore, expression of cathepsin L with PE resulted in increased amounts of nicotine-induced secretion of (Met)enkephalin. Nicotine 80-88 proenkephalin Rattus norvegicus 115-125 17224239-0 2007 The influence of group III metabotropic glutamate receptor stimulation by (1S,3R,4S)-1-aminocyclo-pentane-1,3,4-tricarboxylic acid on the parkinsonian-like akinesia and striatal proenkephalin and prodynorphin mRNA expression in rats. (1s,3r,4s)-1-aminocyclo-pentane-1,3,4-tricarboxylic acid 74-130 proenkephalin Rattus norvegicus 178-191 17224239-6 2007 Haloperidol (3 x 1.5 mg/kg s.c.) significantly increased PENK mRNA expression in the striatum, while PDYN mRNA levels were not affected by that treatment. Haloperidol 0-11 proenkephalin Rattus norvegicus 57-61 17224239-7 2007 ACPT-1 (3 x 1.6 microg/0.5 microl/side) injected into the striatum significantly attenuated the haloperidol-increased PENK mRNA expression, whereas administration of that compound into the GP or SNr did not influence the haloperidol-increased striatal PENK mRNA levels. Haloperidol 96-107 proenkephalin Rattus norvegicus 118-122 17224239-7 2007 ACPT-1 (3 x 1.6 microg/0.5 microl/side) injected into the striatum significantly attenuated the haloperidol-increased PENK mRNA expression, whereas administration of that compound into the GP or SNr did not influence the haloperidol-increased striatal PENK mRNA levels. Haloperidol 96-107 proenkephalin Rattus norvegicus 252-256 16876136-5 2007 THC exposure reduced preproenkephalin (PENK) mRNA expression in the nucleus accumbens during early development, but was elevated in adulthood; no adult striatal changes on preprodynorphin mRNA or PENK in caudate-putamen. Dronabinol 0-3 proenkephalin Rattus norvegicus 21-37 16876136-5 2007 THC exposure reduced preproenkephalin (PENK) mRNA expression in the nucleus accumbens during early development, but was elevated in adulthood; no adult striatal changes on preprodynorphin mRNA or PENK in caudate-putamen. Dronabinol 0-3 proenkephalin Rattus norvegicus 39-43 16876136-6 2007 PENK mRNA was also increased in the central and medial amygdala in adult THC-exposed animals. Dronabinol 73-76 proenkephalin Rattus norvegicus 0-4 16876136-8 2007 CONCLUSIONS: This study demonstrates enduring effects of prenatal THC exposure into adulthood that is evident on heroin-seeking behavior during extinction and allostatic changes in mesocorticolimbic PENK systems relevant to drug motivation/reward and stress response. Dronabinol 66-69 proenkephalin Rattus norvegicus 199-203 17425581-2 2007 In the limbic-prefrontal territory of the dorsal striatum, enkephalin inhibits the NMDA-evoked release of acetylcholine directly through micro-opioid receptors (MORs) located on cholinergic interneurons and indirectly through MORs of output neurons of striosomes. N-Methylaspartate 83-87 proenkephalin Rattus norvegicus 59-69 17425581-2 2007 In the limbic-prefrontal territory of the dorsal striatum, enkephalin inhibits the NMDA-evoked release of acetylcholine directly through micro-opioid receptors (MORs) located on cholinergic interneurons and indirectly through MORs of output neurons of striosomes. Acetylcholine 106-119 proenkephalin Rattus norvegicus 59-69 17425581-5 2007 Accordingly, the direct enkephalin-MOR control of acetylcholine release was preserved after 6-hydroxydopamine treatment and lost after cocaine exposure. Acetylcholine 50-63 proenkephalin Rattus norvegicus 24-34 17425581-5 2007 Accordingly, the direct enkephalin-MOR control of acetylcholine release was preserved after 6-hydroxydopamine treatment and lost after cocaine exposure. Oxidopamine 92-109 proenkephalin Rattus norvegicus 24-34 17425581-5 2007 Accordingly, the direct enkephalin-MOR control of acetylcholine release was preserved after 6-hydroxydopamine treatment and lost after cocaine exposure. Cocaine 135-142 proenkephalin Rattus norvegicus 24-34 17425581-7 2007 Accordingly, the indirect enkephalin-MOR control of acetylcholine release disappeared in the 6-hydroxydopamine situation but surprisingly, despite preservation of MORs in striosomes, disappeared after cocaine treatment. Acetylcholine 52-65 proenkephalin Rattus norvegicus 26-36 17425581-7 2007 Accordingly, the indirect enkephalin-MOR control of acetylcholine release disappeared in the 6-hydroxydopamine situation but surprisingly, despite preservation of MORs in striosomes, disappeared after cocaine treatment. Oxidopamine 93-110 proenkephalin Rattus norvegicus 26-36 17425581-8 2007 Showing that MORs of striosomes are still functional in this situation, the MOR agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin inhibited the NMDA-evoked release of acetylcholine after cocaine exposure. N-Methyl-L-phenylalanine 98-106 proenkephalin Rattus norvegicus 121-131 17425581-8 2007 Showing that MORs of striosomes are still functional in this situation, the MOR agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin inhibited the NMDA-evoked release of acetylcholine after cocaine exposure. gly(5)-ol 110-119 proenkephalin Rattus norvegicus 121-131 17425581-8 2007 Showing that MORs of striosomes are still functional in this situation, the MOR agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin inhibited the NMDA-evoked release of acetylcholine after cocaine exposure. N-Methylaspartate 146-150 proenkephalin Rattus norvegicus 121-131 17425581-8 2007 Showing that MORs of striosomes are still functional in this situation, the MOR agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin inhibited the NMDA-evoked release of acetylcholine after cocaine exposure. Acetylcholine 169-182 proenkephalin Rattus norvegicus 121-131 17425581-9 2007 Therefore, alteration in the regulation of cholinergic transmission by the enkephalin-MOR system might play a major role in the motivational and cognitive disorders associated with dopamine dysfunctions in fronto-cortico-basal ganglia circuits. Dopamine 181-189 proenkephalin Rattus norvegicus 75-85 17430260-5 2007 [D-Ala(2), Phe(4), Gly(5)]-enkephalin (DAGO; mu-opioid agonist), [D-Pen(2,5)]-enkephalin (DPDPE; delta1-opioid agonist), deltorpin II (delta2-opioid agonist), and U-50488 (kappa-opioid agonist) were administered intracerebroventricularly at graded doses. Phenylalanine 11-14 proenkephalin Rattus norvegicus 27-37 17174279-0 2007 Differential regulation of the tyrosine hydroxylase and enkephalin neuropeptide transmitter genes in rat PC12 cells by short chain fatty acids: concentration-dependent effects on transcription and RNA stability. Fatty Acids, Volatile 119-142 proenkephalin Rattus norvegicus 56-66 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. gly-ol 86-92 proenkephalin Rattus norvegicus 96-106 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. Cyclic AMP 118-128 proenkephalin Rattus norvegicus 96-106 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. Cyclic AMP 130-134 proenkephalin Rattus norvegicus 96-106 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. Dinoprostone 164-180 proenkephalin Rattus norvegicus 96-106 17157995-5 2007 Furthermore, we show that the mu opioid receptor agonist, DAMGO ([D-Ala(2),N-MePhe(4),Gly-ol(5)]enkephalin), inhibits cyclic AMP (cAMP) accumulation in response to prostaglandin E2 (PGE(2)) stimulation in bradykinin-primed, but not unprimed, cultured trigeminal ganglia neurons. Prostaglandins E 182-185 proenkephalin Rattus norvegicus 96-106 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. 6-methyl-2-(phenylethynyl)pyridine 0-4 proenkephalin Rattus norvegicus 145-158 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. 6-methyl-2-(phenylethynyl)pyridine 0-4 proenkephalin Rattus norvegicus 160-164 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. alpha-methyl-4-carboxyphenylglycine 70-78 proenkephalin Rattus norvegicus 145-158 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. alpha-methyl-4-carboxyphenylglycine 70-78 proenkephalin Rattus norvegicus 160-164 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. Haloperidol 123-134 proenkephalin Rattus norvegicus 145-158 16699817-5 2007 MPEP administered systemically and mGluR1 antagonists (AIDA, CPCCOEt, LY367385) injected intrastriatally reversed also the haloperidol-increased proenkephalin (PENK) mRNA expression in the striatopallidal pathway. Haloperidol 123-134 proenkephalin Rattus norvegicus 160-164 16699817-7 2007 Intrastriatal injection of this compound reduced the striatal PENK expression induced by haloperidol. Haloperidol 89-100 proenkephalin Rattus norvegicus 62-66 16699817-9 2007 Moreover, a mixed mGluR8 agonist/AMPA antagonist, (R,S)-3,4-DCPG, administered systemically evoked catalepsy and enhanced both the catalepsy and PENK expression induced by haloperidol. 3,4-dicarboxyphenylglycine 50-64 proenkephalin Rattus norvegicus 145-149 16699817-9 2007 Moreover, a mixed mGluR8 agonist/AMPA antagonist, (R,S)-3,4-DCPG, administered systemically evoked catalepsy and enhanced both the catalepsy and PENK expression induced by haloperidol. Haloperidol 172-183 proenkephalin Rattus norvegicus 145-149 18297989-2 2007 Met-enkephalin and alpha-MSH exhibited cytoprotective effects individually and statistically significant additive effect was registered when both peptides were applied in combination on the model of ethanol induced gastric lesions in rats. Ethanol 199-206 proenkephalin Rattus norvegicus 4-14 17250616-4 2007 The effect of ethanol on GAL, ENK, and DYN mRNA was measured using real-time quantitative polymerase chain reaction and radiolabeled in situ hybridization, while radioimmunoassay was used to measure peptide levels. Ethanol 14-21 proenkephalin Rattus norvegicus 30-33 17120290-8 2007 Enkephalin immunolabeling was detected within a single morphological subpopulation of nonpyramidal neurons located predominantly in lamina II/III, 30% (33/109) of which were also GABA immunopositive. gamma-Aminobutyric Acid 179-183 proenkephalin Rattus norvegicus 0-10 17598161-6 2007 Across all regions of the hippocampus, activation of G proteins by the cholinergic agonist carbachol and the mu opioid agonist [D-Ala(2), N-Met-Phe(4), Gly(5)] enkephalin (DAMGO) was ordered by the degree of hypoxia such that sustained hypoxia > intermittent hypoxia > room air. n-met-phe 138-147 proenkephalin Rattus norvegicus 160-170 16996647-5 2006 Low doses of the mu opioid receptor agonist DAMGO [d-Ala(2)-N-Me-Phe(4)-Glycol(5)]-enkephalin administered to Osborne-Mendel rats caused a significant increase in the preference for a diet high in fat. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 44-49 proenkephalin Rattus norvegicus 83-93 17483578-2 2007 Recent evidence suggests that acute furosemide decreases both dopamine uptake and striatal dopamine transporter density and increases enkephalin mRNA levels in the nucleus accumbens (Acb). Furosemide 36-46 proenkephalin Rattus norvegicus 134-144 17483578-8 2007 Additionally, in rats previously primed with furosemide to crave salt in a "need-free" manner, salt intake was augmented in the VTA and reduced in the AcbSh after infusion of [D-Ser(2),Leu(5),Thr(6)]-enkephalin. Furosemide 45-55 proenkephalin Rattus norvegicus 200-210 17483578-8 2007 Additionally, in rats previously primed with furosemide to crave salt in a "need-free" manner, salt intake was augmented in the VTA and reduced in the AcbSh after infusion of [D-Ser(2),Leu(5),Thr(6)]-enkephalin. Salts 95-99 proenkephalin Rattus norvegicus 200-210 16904191-1 2006 We analyzed effects of amphetamine on proenkephalin-derived peptides in brain areas and immune cells in rats. Amphetamine 23-34 proenkephalin Rattus norvegicus 38-51 17049180-4 2006 When pellets of either flavor were presented alone, microinjection of d-Ala(2),N,Me-Phe(4),Gly-ol(5)-enkephalin (DAMGO (a mu opioid receptor (MOP) agonist)) into the NAcc increased consumption of pellets of both flavors equally. n,me-phe 79-87 proenkephalin Rattus norvegicus 101-111 17049180-4 2006 When pellets of either flavor were presented alone, microinjection of d-Ala(2),N,Me-Phe(4),Gly-ol(5)-enkephalin (DAMGO (a mu opioid receptor (MOP) agonist)) into the NAcc increased consumption of pellets of both flavors equally. gly-ol 91-97 proenkephalin Rattus norvegicus 101-111 16814775-4 2006 Systemic administration of heroin or microelectrophoretic application of the selective muOR agonist [d-Ala2, N-Me-Phe4, Gly-ol]-Enkephalin (DAMGO) reduced VTA GABA neuron firing rate (heroin IC(50) = 0.35 mg/kg) and was blocked by the muOR antagonist naloxone. Heroin 27-33 proenkephalin Rattus norvegicus 128-138 16814775-4 2006 Systemic administration of heroin or microelectrophoretic application of the selective muOR agonist [d-Ala2, N-Me-Phe4, Gly-ol]-Enkephalin (DAMGO) reduced VTA GABA neuron firing rate (heroin IC(50) = 0.35 mg/kg) and was blocked by the muOR antagonist naloxone. n-me-phe4 109-118 proenkephalin Rattus norvegicus 128-138 16814775-4 2006 Systemic administration of heroin or microelectrophoretic application of the selective muOR agonist [d-Ala2, N-Me-Phe4, Gly-ol]-Enkephalin (DAMGO) reduced VTA GABA neuron firing rate (heroin IC(50) = 0.35 mg/kg) and was blocked by the muOR antagonist naloxone. gamma-Aminobutyric Acid 159-163 proenkephalin Rattus norvegicus 128-138 16814775-4 2006 Systemic administration of heroin or microelectrophoretic application of the selective muOR agonist [d-Ala2, N-Me-Phe4, Gly-ol]-Enkephalin (DAMGO) reduced VTA GABA neuron firing rate (heroin IC(50) = 0.35 mg/kg) and was blocked by the muOR antagonist naloxone. Naloxone 251-259 proenkephalin Rattus norvegicus 128-138 17109943-2 2006 In previous experiments, overexpression of enkephalin in the amygdala enhanced the anxiolytic actions of the benzodiazepine agonist diazepam in the elevated plus maze. Benzodiazepines 109-123 proenkephalin Rattus norvegicus 43-53 17109943-2 2006 In previous experiments, overexpression of enkephalin in the amygdala enhanced the anxiolytic actions of the benzodiazepine agonist diazepam in the elevated plus maze. Diazepam 132-140 proenkephalin Rattus norvegicus 43-53 17108160-6 2006 Rhythm was abolished by low nanomolar concentrations of the mu-opiate receptor agonist DAMGO ([D-Ala2, N-Me-Phe4, Gly5-ol]enkephalin). [d-ala2, n-me-phe4 94-112 proenkephalin Rattus norvegicus 122-132 16407481-3 2006 In cultures of dissociated interneurons, the mGluRI antagonists LY367385 and MPEP reduced the increase in phosphorylation of the transcription factor CREB induced by NMDA as well as the expression of the proenkephalin (PEnk) gene. alpha-methyl-4-carboxyphenylglycine 64-72 proenkephalin Rattus norvegicus 204-217 16407481-3 2006 In cultures of dissociated interneurons, the mGluRI antagonists LY367385 and MPEP reduced the increase in phosphorylation of the transcription factor CREB induced by NMDA as well as the expression of the proenkephalin (PEnk) gene. alpha-methyl-4-carboxyphenylglycine 64-72 proenkephalin Rattus norvegicus 219-223 16407481-3 2006 In cultures of dissociated interneurons, the mGluRI antagonists LY367385 and MPEP reduced the increase in phosphorylation of the transcription factor CREB induced by NMDA as well as the expression of the proenkephalin (PEnk) gene. 6-methyl-2-(phenylethynyl)pyridine 77-81 proenkephalin Rattus norvegicus 204-217 16407481-3 2006 In cultures of dissociated interneurons, the mGluRI antagonists LY367385 and MPEP reduced the increase in phosphorylation of the transcription factor CREB induced by NMDA as well as the expression of the proenkephalin (PEnk) gene. 6-methyl-2-(phenylethynyl)pyridine 77-81 proenkephalin Rattus norvegicus 219-223 16407481-6 2006 In organotypic cultures of neocortex, endogenous glutamate enhanced the PEnk gene expression by acting on NMDA and AMPA receptors. Glutamic Acid 49-58 proenkephalin Rattus norvegicus 72-76 17047937-0 2006 Ethanol exposure differentially alters pro-enkephalin mRNA expression in regions of the mesocorticolimbic system. Ethanol 0-7 proenkephalin Rattus norvegicus 39-53 17047937-3 2006 OBJECTIVE: The aim of this work was to study the effects of a high dose of ethanol (2.5 g/kg body weight) on pro-enkephalin (pro-enk) mRNA expression in brain regions of the mesocorticolimbic system for up to 24 h after drug administration. Ethanol 75-82 proenkephalin Rattus norvegicus 109-123 17047937-3 2006 OBJECTIVE: The aim of this work was to study the effects of a high dose of ethanol (2.5 g/kg body weight) on pro-enkephalin (pro-enk) mRNA expression in brain regions of the mesocorticolimbic system for up to 24 h after drug administration. Ethanol 75-82 proenkephalin Rattus norvegicus 109-116 17047937-6 2006 RESULTS: Acute ethanol administration induced a transient decrease and increase in pro-enk mRNA expression in the ventral tegmental area (33.2%) and prefrontal cortex (26.5%) 2 and 4 h after treatment, respectively. Ethanol 15-22 proenkephalin Rattus norvegicus 83-90 17047937-7 2006 In contrast, ethanol induced prolonged increases in pro-enk mRNA expression in the core and shell regions of the nucleus accumbens, with different kinetics. Ethanol 13-20 proenkephalin Rattus norvegicus 52-59 17047937-9 2006 CONCLUSIONS: Our results indicate that enkephalin expression in regions of the rat mesocorticolimbic system is differentially altered by acute ethanol treatment and suggest that enkephalins may play a key role in ethanol reinforcement mechanisms. Ethanol 143-150 proenkephalin Rattus norvegicus 39-49 17047937-9 2006 CONCLUSIONS: Our results indicate that enkephalin expression in regions of the rat mesocorticolimbic system is differentially altered by acute ethanol treatment and suggest that enkephalins may play a key role in ethanol reinforcement mechanisms. Ethanol 213-220 proenkephalin Rattus norvegicus 39-49 16904191-4 2006 The influence of met-ENK in key brain areas for sensitization and in immune organs is consistent with the idea that changes on met-ENK could underlie amphetamine"s effects on brain and IS. Amphetamine 150-161 proenkephalin Rattus norvegicus 21-24 16904191-4 2006 The influence of met-ENK in key brain areas for sensitization and in immune organs is consistent with the idea that changes on met-ENK could underlie amphetamine"s effects on brain and IS. Amphetamine 150-161 proenkephalin Rattus norvegicus 131-134 16847679-6 2006 We infused the agonist, [D: -Ala(2), N-Me-Phe(4), Glycinol(5)]-Enkephalin (DAMGO), 1 week after beta-FNA to probe the acute effects of exogenous stimulation of MORs on palatable food intake. Alanine 29-32 proenkephalin Rattus norvegicus 63-73 16847679-6 2006 We infused the agonist, [D: -Ala(2), N-Me-Phe(4), Glycinol(5)]-Enkephalin (DAMGO), 1 week after beta-FNA to probe the acute effects of exogenous stimulation of MORs on palatable food intake. N-Methyl-L-phenylalanine 37-45 proenkephalin Rattus norvegicus 63-73 16847679-6 2006 We infused the agonist, [D: -Ala(2), N-Me-Phe(4), Glycinol(5)]-Enkephalin (DAMGO), 1 week after beta-FNA to probe the acute effects of exogenous stimulation of MORs on palatable food intake. glycinol 50-58 proenkephalin Rattus norvegicus 63-73 16771831-6 2006 Single-cell analysis showed that zif-268 mRNA modifications occurred in Enk(+) striatopallidal neurons after acute or subchronic treatment with caffeine and in Enk(-) striatonigral neurons after acute amphetamine administration. Caffeine 144-152 proenkephalin Rattus norvegicus 72-75 16739166-7 2006 Double labeling studies showed that nicotine induced c-fos expression within CRF cells in the PVN, as well as in a small population of ENK cells, but not in PVN DYN cells. Nicotine 36-44 proenkephalin Rattus norvegicus 135-138 16739166-8 2006 In contrast, there was no significant nicotine-induced increase in c-fos expression in CEA CRF or DYN cells, whereas nicotine treatment did increase c-fos expression within CEA ENK cells. Nicotine 117-125 proenkephalin Rattus norvegicus 177-180 16467418-3 2006 The effect of morphine and (D-Ala2,N-Me-Phe4,Gly-ol5)-enkephalin (DAMGO) was measured by testing the paw mechanical withdrawal threshold in rats treated with RTX or vehicle. n-me-phe4 35-44 proenkephalin Rattus norvegicus 54-64 16628615-8 2006 In addition, we found that the ventromedial nucleus of the hypothalamus and the pontine parabrachial nucleus provide a moderate ENK input to the CEA and MEA. cea 145-148 proenkephalin Rattus norvegicus 128-131 16467418-3 2006 The effect of morphine and (D-Ala2,N-Me-Phe4,Gly-ol5)-enkephalin (DAMGO) was measured by testing the paw mechanical withdrawal threshold in rats treated with RTX or vehicle. resiniferatoxin 158-161 proenkephalin Rattus norvegicus 54-64 16455064-0 2006 Postnatal administration of D1 dopamine agonist reverses neonatal dopaminergic lesion-induced changes in striatal enkephalin and substance P systems. Dopamine 31-39 proenkephalin Rattus norvegicus 114-124 16377088-4 2006 Forskolin-induced cAMP formation was inhibited by [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin (DAMGO 1 microM), a specific MOR agonist. Colforsin 0-9 proenkephalin Rattus norvegicus 85-95 16377088-4 2006 Forskolin-induced cAMP formation was inhibited by [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin (DAMGO 1 microM), a specific MOR agonist. Cyclic AMP 18-22 proenkephalin Rattus norvegicus 85-95 16377088-4 2006 Forskolin-induced cAMP formation was inhibited by [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin (DAMGO 1 microM), a specific MOR agonist. N-Methyl-L-phenylalanine 61-69 proenkephalin Rattus norvegicus 85-95 16306173-7 2006 The specific mu opioid receptor agonist, (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAMGO, 1 microM), significantly reduced the frequency of miniature inhibitory postsynaptic currents (mIPSCs) in 77% of cells tested. (d-ala2,n-me-phe4 41-58 proenkephalin Rattus norvegicus 68-78 16624955-9 2006 Both EMs displaced binding of [3H]-[D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin to mu-receptors in dorsal root ganglia (DRG). Tritium 31-33 proenkephalin Rattus norvegicus 61-71 16624955-9 2006 Both EMs displaced binding of [3H]-[D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin to mu-receptors in dorsal root ganglia (DRG). n-me-phe4 43-52 proenkephalin Rattus norvegicus 61-71 16624955-9 2006 Both EMs displaced binding of [3H]-[D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin to mu-receptors in dorsal root ganglia (DRG). gly5-ol 53-60 proenkephalin Rattus norvegicus 61-71 16446799-2 2006 In the cyclic mimetic the intramolecular (1-4) hydrogen bond found in crystalline Leu-enkephalin has been replaced by an ethylene bridge. Hydrogen 47-55 proenkephalin Rattus norvegicus 86-96 16446799-2 2006 In the cyclic mimetic the intramolecular (1-4) hydrogen bond found in crystalline Leu-enkephalin has been replaced by an ethylene bridge. ethylene 121-129 proenkephalin Rattus norvegicus 86-96 16967091-8 2006 Prolonged treatment with progesterone resulted in significant changes in plasma levels of Met-enkephalin, cortisol and steroids and altered the expression of proenkephalin mRNA in the hypothalamus, pituitary, ovary and adrenals. Progesterone 25-37 proenkephalin Rattus norvegicus 158-171 16412997-2 2006 Although regulation of the gene expression of the opioid propeptides proenkephalin (PENK) and prodynorphin (PDYN) by psychostimulants has previously been described, little attention has been paid to dissociating effects of pharmacological actions of the drugs from those produced by motivational processes driving active drug intake in self-administration paradigms. propeptides 57-68 proenkephalin Rattus norvegicus 69-82 16412997-2 2006 Although regulation of the gene expression of the opioid propeptides proenkephalin (PENK) and prodynorphin (PDYN) by psychostimulants has previously been described, little attention has been paid to dissociating effects of pharmacological actions of the drugs from those produced by motivational processes driving active drug intake in self-administration paradigms. propeptides 57-68 proenkephalin Rattus norvegicus 84-88 16412997-3 2006 In the present study, effects of response-dependent (contingent) and response-independent (noncontingent) cocaine administration on the PENK and PDYN gene expression in the rat forebrain have been directly compared using the "yoked" self-administration procedure. Cocaine 106-113 proenkephalin Rattus norvegicus 136-140 16420170-0 2005 Facilitation of fear extinction by midbrain periaqueductal gray infusions of RB101(S), an inhibitor of enkephalin-degrading enzymes. RB 101 77-82 proenkephalin Rattus norvegicus 103-113 16367789-5 2005 These data suggest a novel role for striatal acetylcholine in modulating feeding behavior via its effects on enkephalin gene expression. Acetylcholine 45-58 proenkephalin Rattus norvegicus 109-119 16420170-5 2005 Extinction training was preceded by infusions of vehicle or RB101(S), an inhibitor of enkephalin catabolising enzymes. RB 101 60-65 proenkephalin Rattus norvegicus 86-96 16120787-6 2005 Morphine-induced endocytosis of MORs was quantitatively similar to that induced by the enkephalin analog D-Ala2-N-Me-Phe4-Glycol5-enkephalin, and endocytosis induced by both ligands was inhibited by a dominant-negative mutant version of arrestin-3 (beta-arrestin-2). d-ala2-n-me-phe4 105-121 proenkephalin Rattus norvegicus 87-97 16258984-7 2005 These studies showed that the conversion of the cyclic prodrugs to the respective linear peptides (i.e., DADLE and [D-Ala2,Leu5]-Enk) was rapid in rat and guinea pig. [d-ala2,leu5 115-127 proenkephalin Rattus norvegicus 129-132 15968457-3 2005 To investigate whether neuroprotection exerted by the A2A antagonist 8-(3-chlorostyryl)caffeine (CSC) correlates with a diminution of the striatopallidal pathway activity, we have examined the changes in the mRNA encoding for enkephalin, dynorphin, and adenosine A2A receptors by in situ hybridization induced by subacute systemic pretreatment with CSC in rats with striatal 6-hydroxydopamine(6-OHDA) administration. 8-(3-chlorostyryl)caffeine 69-95 proenkephalin Rattus norvegicus 226-236 16120787-6 2005 Morphine-induced endocytosis of MORs was quantitatively similar to that induced by the enkephalin analog D-Ala2-N-Me-Phe4-Glycol5-enkephalin, and endocytosis induced by both ligands was inhibited by a dominant-negative mutant version of arrestin-3 (beta-arrestin-2). d-ala2-n-me-phe4 105-121 proenkephalin Rattus norvegicus 130-140 16026468-9 2005 (iii) While preproenkephalin mRNA levels remained stable, enkephalin tissue content was the lowest (-32%) in the afternoon when the spontaneous (+35%) and the N-methyl-d-aspartate-evoked (+140%) releases of enkephalin (from microsuperfused slices) were the highest. N-Methylaspartate 159-179 proenkephalin Rattus norvegicus 58-68 16026468-10 2005 Therefore, by acting on MORs present on cholinergic interneurons, endogenously released enkephalin reduces ACh release. Acetylcholine 107-110 proenkephalin Rattus norvegicus 88-98 15803474-2 2005 In addition, we previously provided ultrastructural evidence showing that ENK is colocalized with glutamate using a combination of pre- and postembedding immunohistochemistry. Glutamic Acid 98-107 proenkephalin Rattus norvegicus 74-77 15872098-2 2005 This projection coexpresses GABA and enkephalin, posing a role for mu-opioid receptors in the ventral pallidum in mediating the reinstatement of cocaine seeking. Cocaine 145-152 proenkephalin Rattus norvegicus 37-47 15872098-8 2005 These data are consistent with the reinstatement of cocaine seeking being modulated in part by coreleased enkephalin and GABA from the accumbens-ventral pallidal projection, a modulation that may involve the inhibition of GABA release by presynaptic mu receptors. Cocaine 52-59 proenkephalin Rattus norvegicus 106-116 15872098-8 2005 These data are consistent with the reinstatement of cocaine seeking being modulated in part by coreleased enkephalin and GABA from the accumbens-ventral pallidal projection, a modulation that may involve the inhibition of GABA release by presynaptic mu receptors. gamma-Aminobutyric Acid 222-226 proenkephalin Rattus norvegicus 106-116 15806307-8 2005 Naltrexone-induced blockade of all met-Enk receptor subtypes decreased proliferative activity in immature adrenal and raised it in regenerating glands. Naltrexone 0-10 proenkephalin Rattus norvegicus 39-42 15806307-10 2005 In contrast, met-Enk exerted a marked antiproliferogenic effect that was reversed by naltrexone. Naltrexone 85-95 proenkephalin Rattus norvegicus 17-20 15839790-3 2005 Independent groups received an injection of either the vehicle or the delta-receptor agonist [D-Ala2-,N-Me-Phe4,Gly-ol] enkephalin (DPDPE; 24 microg/kg). d-ala2-,n-me-phe4 94-111 proenkephalin Rattus norvegicus 120-130 15388784-5 2005 The specific mu opioid receptor agonist, [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO, 1 microM), significantly reduced the frequency of miniature inhibitory postsynaptic currents (mIPSCs) without altering the amplitude and decay constant of mIPSCs in 47.6% (10 of 21) of cells tested. N-Methyl-L-phenylalanine 51-59 proenkephalin Rattus norvegicus 74-84 15644446-6 2005 Immunohistochemical studies also revealed METH-induced increased FasL protein expression in striatal GABAergic neurons that express enkephalin. Methamphetamine 42-46 proenkephalin Rattus norvegicus 132-142 15816538-0 2005 Serum enkephalin-degrading aminopeptidase activity in N-methyl nitrosourea-induced rat breast cancer. n-methyl nitrosourea 54-74 proenkephalin Rattus norvegicus 6-16 15627432-5 2005 mu opioid receptor agonist ([D-Ala2, N-Me-Phe4, Gly-ol5]-enkephalin; DAMGO) or delta opioid receptor agonist ((+)-4-[(aR)-a-((2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N,N-diethylbenzamide; SNC80). n-me-phe4 37-46 proenkephalin Rattus norvegicus 57-67 15280436-4 2004 In this study, we determined the difference in the modulation of voltage-gated Ca2+ currents by [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO, a specific mu opioid agonist) between IB4-positive and -negative small dorsal root ganglion (DRG) neurons. n-me-phe4 104-113 proenkephalin Rattus norvegicus 123-133 15939541-9 2005 Application of a mu-opioid agonist, [d-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin, transformed the burst pattern of post-inspiratory neurons into that of pre-inspiratory neurons. [d-ala2, n-me-phe4 36-54 proenkephalin Rattus norvegicus 65-75 15527743-4 2004 The aim of this work was to investigate the effects of acute ethanol administration on delta opioid receptors in the rat mesocortical, meso-accumbens and nigrostriatal pathways by quantitative receptor autoradiography, using [(3)H] (2-D-penicillamine, 5-D-penicillamine)-enkephalin as radioligand. Ethanol 61-68 proenkephalin Rattus norvegicus 271-281 15527743-5 2004 A significant increase in [(3)H] (2-D-penicillamine, 5-D-penicillamine)-enkephalin binding was observed in the substantia nigra pars reticulata 1 h after ethanol treatment. [(3)h] (2-d-penicillamine 26-51 proenkephalin Rattus norvegicus 72-82 15527743-5 2004 A significant increase in [(3)H] (2-D-penicillamine, 5-D-penicillamine)-enkephalin binding was observed in the substantia nigra pars reticulata 1 h after ethanol treatment. Ethanol 154-161 proenkephalin Rattus norvegicus 72-82 15475572-2 2005 It has recently been reported that coapplication of low concentrations of [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) facilitates the ability of morphine to stimulate mu-opioid receptor endocytosis and prevents the development of morphine tolerance in rats. N-Methyl-L-phenylalanine 84-92 proenkephalin Rattus norvegicus 107-117 15475572-2 2005 It has recently been reported that coapplication of low concentrations of [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) facilitates the ability of morphine to stimulate mu-opioid receptor endocytosis and prevents the development of morphine tolerance in rats. Morphine 153-161 proenkephalin Rattus norvegicus 107-117 15475572-2 2005 It has recently been reported that coapplication of low concentrations of [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) facilitates the ability of morphine to stimulate mu-opioid receptor endocytosis and prevents the development of morphine tolerance in rats. Morphine 238-246 proenkephalin Rattus norvegicus 107-117 15893634-5 2005 Opioid peptide methionine-enkephalin (ME; 10 microM) produced a significant inhibition (38%) in the amplitude of evoked EPSCs, an action mimicked by the mu-opioid receptor agonist [D-Ala(2),N-MePhe(4),Gly-ol(5)]-enkephalin (DAMGO; 1 microM, 44%). n-mephe 190-197 proenkephalin Rattus norvegicus 26-36 15893634-5 2005 Opioid peptide methionine-enkephalin (ME; 10 microM) produced a significant inhibition (38%) in the amplitude of evoked EPSCs, an action mimicked by the mu-opioid receptor agonist [D-Ala(2),N-MePhe(4),Gly-ol(5)]-enkephalin (DAMGO; 1 microM, 44%). gly-ol 201-207 proenkephalin Rattus norvegicus 26-36 15280436-4 2004 In this study, we determined the difference in the modulation of voltage-gated Ca2+ currents by [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO, a specific mu opioid agonist) between IB4-positive and -negative small dorsal root ganglion (DRG) neurons. ib4 180-183 proenkephalin Rattus norvegicus 123-133 15489007-5 2004 In the formalin hindpaw-injection model, 15 days after subarachnoid transplant of cells, grafts of met-enkephalin and pro-enkephalin cells significantly reduced the number of formalin-evoked c-fos immunoreactive spinal neurons in the spinal cord, compared to grafts of vector-alone chromaffin cells. Formaldehyde 7-15 proenkephalin Rattus norvegicus 118-132 15489007-5 2004 In the formalin hindpaw-injection model, 15 days after subarachnoid transplant of cells, grafts of met-enkephalin and pro-enkephalin cells significantly reduced the number of formalin-evoked c-fos immunoreactive spinal neurons in the spinal cord, compared to grafts of vector-alone chromaffin cells. Formaldehyde 175-183 proenkephalin Rattus norvegicus 118-132 15489007-5 2004 In the formalin hindpaw-injection model, 15 days after subarachnoid transplant of cells, grafts of met-enkephalin and pro-enkephalin cells significantly reduced the number of formalin-evoked c-fos immunoreactive spinal neurons in the spinal cord, compared to grafts of vector-alone chromaffin cells. chromaffin 282-292 proenkephalin Rattus norvegicus 118-132 15353366-6 2004 Indeed, delta opioid (D-Ala 2, D-Leu 5) enkephalin (DADLE) was shown to induce hibernation. delta opioid 8-20 proenkephalin Rattus norvegicus 40-50 15519683-9 2004 These findings suggest that enkephalin and dynorphin in NAc may play important roles in the mechanisms underlying the inhibitory effect of PES on the expression and reinstatement of morphine-induced CPP in rats. polyether sulfone 139-142 proenkephalin Rattus norvegicus 28-38 15519683-9 2004 These findings suggest that enkephalin and dynorphin in NAc may play important roles in the mechanisms underlying the inhibitory effect of PES on the expression and reinstatement of morphine-induced CPP in rats. Morphine 182-190 proenkephalin Rattus norvegicus 28-38 15451387-7 2004 [D-Ala2, N-Me-Phe4, Gly5-ol] enkephalin (DAMGO, 0.1-10 nmol), a mu-opioid selective agonist, significantly inhibited antral motility in a dose-dependent manner (n=4). n-me-phe4 9-18 proenkephalin Rattus norvegicus 29-39 15451387-7 2004 [D-Ala2, N-Me-Phe4, Gly5-ol] enkephalin (DAMGO, 0.1-10 nmol), a mu-opioid selective agonist, significantly inhibited antral motility in a dose-dependent manner (n=4). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 41-46 proenkephalin Rattus norvegicus 29-39 15548206-3 2004 Firstly, we investigated the effect of [D-Pen2,D-Pen5]-enkephalin (DPDPE) on glutamate release in rats by intrastriatal microdialysis. Glutamic Acid 77-86 proenkephalin Rattus norvegicus 55-65 15488297-6 2004 A specific mu-opioid agonist, [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO), reversibly reduced the frequency of mIPSCs without any alteration of amplitude. N-Methyl-L-phenylalanine 40-48 proenkephalin Rattus norvegicus 63-73 15380931-1 2004 Tyr-D-Ala-Gly-Phe-D-Nle-Arg-Phe (DADN) a synthetic analogue of the endogenous Met-enkephalin-Arg-Phe (Tyr-Gly-Gly-Phe-Met-Arg-Phe; MERF), was investigated in radioligand binding assays, [(35)S]GTPgammaS stimulation experiments as well as in in vivo algesiometric tests. Tyr-D-Ala-Gly-Phe-D-Nle-Arg-Phe 0-31 proenkephalin Rattus norvegicus 82-92 15380931-1 2004 Tyr-D-Ala-Gly-Phe-D-Nle-Arg-Phe (DADN) a synthetic analogue of the endogenous Met-enkephalin-Arg-Phe (Tyr-Gly-Gly-Phe-Met-Arg-Phe; MERF), was investigated in radioligand binding assays, [(35)S]GTPgammaS stimulation experiments as well as in in vivo algesiometric tests. dadn 33-37 proenkephalin Rattus norvegicus 82-92 15357849-2 2004 Mesenteric afferent discharge was recorded electrophysiologically in response to [D-ALA2, N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO; 100 mug kg(-1) i.v. [d-ala2, n-me-phe4 81-99 proenkephalin Rattus norvegicus 110-120 15121763-4 2004 Using quantitative autoradiography, binding of mu-opioid receptors labeled by [125I]FK33,824 (D-Ala2,N-Me-Phe4,Met(O)5-ol enkephalin) and the coupling between receptors and G proteins determined by agonist-stimulated guanosine 5"-O -(3-[35S]thio)triphosphate ([35S]GTPgammaS) binding was mapped throughout brain sections of FH rats after 10-day treatment with vehicle, desipramine, or sertraline. fk33 84-88 proenkephalin Rattus norvegicus 122-132 15261106-4 2004 The Ba(2+) current passing through VDCC was reversibly inhibited by a MOR agonist, [D-Ala(2),N-MePhe(4),Gly(5)-ol]-enkephalin (DAMGO, 1 microM). vdcc 35-39 proenkephalin Rattus norvegicus 115-125 15121763-6 2004 The coupling efficiency of mu-opioid receptors to G proteins was determined by an increase of [35S]GTPgammaS binding induced by stimulation with the mu-opioid receptor agonist [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (10 microM). Sulfur-35 95-98 proenkephalin Rattus norvegicus 203-213 15261106-4 2004 The Ba(2+) current passing through VDCC was reversibly inhibited by a MOR agonist, [D-Ala(2),N-MePhe(4),Gly(5)-ol]-enkephalin (DAMGO, 1 microM). n-mephe 93-100 proenkephalin Rattus norvegicus 115-125 15140157-0 2004 Expression of proopiomelanocortin and proenkephalin mRNA in sexually dimorphic brain regions are altered in adult male and female rats treated prenatally with morphine. Morphine 159-167 proenkephalin Rattus norvegicus 38-51 15140157-1 2004 The present study demonstrates that prenatal morphine exposure on gestation days 11-18 differentially alters proopiomelanocortin (POMC) and proenkephalin (pENK) mRNA in the hypothalamus and limbic system of adult male and female rats. Morphine 45-53 proenkephalin Rattus norvegicus 140-153 15140157-1 2004 The present study demonstrates that prenatal morphine exposure on gestation days 11-18 differentially alters proopiomelanocortin (POMC) and proenkephalin (pENK) mRNA in the hypothalamus and limbic system of adult male and female rats. Morphine 45-53 proenkephalin Rattus norvegicus 155-159 15140157-2 2004 In adult, prenatally morphine-exposed male rats POMC mRNA levels are decreased in the arcuate nucleus of the hypothalamus (ARC), while the pENK mRNA levels are increased in the paraventricular nucleus of the hypothalamus (PVN) and in the ventrolateral subdivision of the ventromedial nucleus of the hypothalamus (VMH), specifically in the ventrolateral subdivision of the VMH. Morphine 21-29 proenkephalin Rattus norvegicus 139-143 14724227-6 2004 The mu-receptor agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO, 1 microM) significantly decreased the amplitude of evoked excitatory postsynaptic currents (EPSCs) in 52% (9 of 17) of labeled cells. N-Methyl-L-phenylalanine 34-42 proenkephalin Rattus norvegicus 57-67 15140157-4 2004 In contrast, pENK mRNA levels are decreased in the VMH of morphine-exposed, OVX females and increased in EB-treated females. Morphine 58-66 proenkephalin Rattus norvegicus 13-17 15140157-4 2004 In contrast, pENK mRNA levels are decreased in the VMH of morphine-exposed, OVX females and increased in EB-treated females. estradiol 3-benzoate 105-107 proenkephalin Rattus norvegicus 13-17 15140157-5 2004 Further, prenatal morphine exposure decreases pENK mRNA in the ARC and increases it in the medial pre-optic area independently of female gonadal hormones. Morphine 18-26 proenkephalin Rattus norvegicus 46-50 15140157-7 2004 Thus, the present study suggests that prenatal morphine exposure sex and brain region specifically alters the level of POMC and pENK mRNA. Morphine 47-55 proenkephalin Rattus norvegicus 128-132 14634035-11 2004 The degree of inhibition produced by 3-MNTX was less than that produced by the full agonist [d-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO). N-Methyl-L-phenylalanine 102-110 proenkephalin Rattus norvegicus 125-135 14693616-0 2004 Reduction in [D-Ala2, NMePhe4, Gly-ol5]enkephalin-induced peripheral antinociception in diabetic rats: the role of the L-arginine/nitric oxide/cyclic guanosine monophosphate pathway. nmephe4 22-29 proenkephalin Rattus norvegicus 39-49 14693616-9 2004 IMPLICATIONS: This is the first study on the role of the nitric oxide (NO)/cyclic guanosine monophosphate pathway on [D-Ala(2), NMePhe(4), Gly-ol(5)]enkephalin (DAMGO)-induced peripheral antinociception and the effect of diabetes on this pathway. Nitric Oxide 57-69 proenkephalin Rattus norvegicus 149-159 14693616-9 2004 IMPLICATIONS: This is the first study on the role of the nitric oxide (NO)/cyclic guanosine monophosphate pathway on [D-Ala(2), NMePhe(4), Gly-ol(5)]enkephalin (DAMGO)-induced peripheral antinociception and the effect of diabetes on this pathway. Cyclic GMP 75-105 proenkephalin Rattus norvegicus 149-159 15489028-3 2004 Whilst we have previously shown that glutamate is utilised in projections from one of these caudal raphe nuclei, the raphe pallidus, to hypoglossal motoneurones, these raphe pallidus-hypoglossal projections also contain multiple co-localised neuropeptides, including a population that are immunopositive for enkephalin. Glutamic Acid 37-46 proenkephalin Rattus norvegicus 308-318 14750964-4 2004 Using immunofluorescence and immunogold-silver staining, we wished to exploit SP and enkephalin (ENK) immunoreactivity and their relationships with glutamate, GABA, glycine, or NK1R in the pre-BotC in adult Sprague-Dawley rats. Glutamic Acid 148-157 proenkephalin Rattus norvegicus 97-100 14750964-12 2004 Colocalization of SP and/or ENK with glutamate in boutons in the pre-BotC implies the combined synaptic release of excitatory amino acid and neuropeptides, which may exert combined post-synaptic effects onto NK1R-ir neurons and contribute to respiratory activity. Glutamic Acid 37-46 proenkephalin Rattus norvegicus 28-31 14750964-12 2004 Colocalization of SP and/or ENK with glutamate in boutons in the pre-BotC implies the combined synaptic release of excitatory amino acid and neuropeptides, which may exert combined post-synaptic effects onto NK1R-ir neurons and contribute to respiratory activity. Excitatory Amino Acids 115-136 proenkephalin Rattus norvegicus 28-31 14748558-3 2004 Thalamic lesions prevented most of the dopamine denervation-induced changes (i.e. the increases in mRNA levels of enkephalin and GAD67 in the striatum, of GAD67 in the globus pallidus and entopeduncular nucleus, and of cytochrome oxidase subunit-I in the subthalamic nucleus), but did not affect the downregulation of striatal substance P and upregulation of GAD67 in the substantia nigra pars reticulata. Dopamine 39-47 proenkephalin Rattus norvegicus 114-124 14706785-2 2004 The role of micro-opioid receptors, activated by endogenously released enkephalin, on the NMDA-evoked release of ACh was studied using the selective micro-opioid receptor antagonist, beta-funaltrexamine. N-Methylaspartate 90-94 proenkephalin Rattus norvegicus 71-81 14706785-2 2004 The role of micro-opioid receptors, activated by endogenously released enkephalin, on the NMDA-evoked release of ACh was studied using the selective micro-opioid receptor antagonist, beta-funaltrexamine. Acetylcholine 113-116 proenkephalin Rattus norvegicus 71-81 14960335-7 2004 injections of MOR ligand [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin resulted in internalization of the MOR in a similar manner observed following mating. N-Methyl-L-phenylalanine 36-44 proenkephalin Rattus norvegicus 60-70 14960335-7 2004 injections of MOR ligand [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin resulted in internalization of the MOR in a similar manner observed following mating. gly(5)-ol 49-58 proenkephalin Rattus norvegicus 60-70 15099667-0 2004 [d-Ala2,N-MePhe4,Gly-ol5]enkephalin-induced internalization of the micro opioid receptor in the spinal cord of morphine tolerant rats. n-mephe4 8-16 proenkephalin Rattus norvegicus 25-35 15099667-0 2004 [d-Ala2,N-MePhe4,Gly-ol5]enkephalin-induced internalization of the micro opioid receptor in the spinal cord of morphine tolerant rats. gly-ol5 17-24 proenkephalin Rattus norvegicus 25-35 15099667-0 2004 [d-Ala2,N-MePhe4,Gly-ol5]enkephalin-induced internalization of the micro opioid receptor in the spinal cord of morphine tolerant rats. Morphine 111-119 proenkephalin Rattus norvegicus 25-35 15099667-2 2004 Here we show that in rats rendered tolerant to the analgesic action of morphine, cross-tolerance to the analgesic action of intrathecally administered [d-Ala2,N-MePhe4,Gly-ol5]enkephalin (DAMGO) can be produced without changes in the magnitude of DAMGO-induced internalization of the MOR in lamina II neurons of the rat spinal cord. Morphine 71-79 proenkephalin Rattus norvegicus 176-186 15099667-2 2004 Here we show that in rats rendered tolerant to the analgesic action of morphine, cross-tolerance to the analgesic action of intrathecally administered [d-Ala2,N-MePhe4,Gly-ol5]enkephalin (DAMGO) can be produced without changes in the magnitude of DAMGO-induced internalization of the MOR in lamina II neurons of the rat spinal cord. n-mephe4 159-167 proenkephalin Rattus norvegicus 176-186 15489028-8 2004 Enkephalin also increased the amplitude ratio (1.57+/-0.36 vs. 1.14+/-0.27, P<0.01) of pairs of evoked EPSCs (paired pulse ratio), decreased the frequency (P<0.0001) but not the amplitude of miniature EPSCs, whilst having no effect on the inward current evoked by glutamate applied directly to the postsynaptic cell (97.8+/-2.2% of control, P=n.s.). Glutamic Acid 270-279 proenkephalin Rattus norvegicus 0-10 15489028-10 2004 Together, these data suggest that enkephalin acts at tau-opioid receptors located on the presynaptic terminals of raphe pallidus inputs to hypoglossal motoneurones to significantly decrease glutamate release from these projections. Glutamic Acid 190-199 proenkephalin Rattus norvegicus 34-44 14642644-7 2003 This suggests that glutamate-mediated up-regulation of striatal enkephalin plays a role in the development of haloperidol-induced persistent oral dyskinesias. Glutamic Acid 19-28 proenkephalin Rattus norvegicus 64-74 14642644-7 2003 This suggests that glutamate-mediated up-regulation of striatal enkephalin plays a role in the development of haloperidol-induced persistent oral dyskinesias. Haloperidol 110-121 proenkephalin Rattus norvegicus 64-74 14622157-5 2003 Priming with either SKF38393 or quinpirole further increased GAD67 mRNA in enkephalin (-) and (+) neurons, however, while SKF38393 produced a high and unbalanced activation toward enkephalin (-) neurons, after quinpirole the increase was of low intensity and similar in the two pathways. 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine 20-28 proenkephalin Rattus norvegicus 75-85 14645669-3 2003 In studies on the mechanism of short- and long-term mu opioid regulation of the ERK signaling pathway, we show that the mu opioid agonist [d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO), acting via the endogenous mu opioid receptor (MOR), induced sequential epidermal growth factor receptor (EGF) receptor (EGFR) Tyr phosphorylation, Ser phosphorylation, and down-regulation in immortalized rat cortical astrocytes. gly5-ol 156-163 proenkephalin Rattus norvegicus 165-175 14645669-3 2003 In studies on the mechanism of short- and long-term mu opioid regulation of the ERK signaling pathway, we show that the mu opioid agonist [d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO), acting via the endogenous mu opioid receptor (MOR), induced sequential epidermal growth factor receptor (EGF) receptor (EGFR) Tyr phosphorylation, Ser phosphorylation, and down-regulation in immortalized rat cortical astrocytes. Tyrosine 311-314 proenkephalin Rattus norvegicus 165-175 14645669-3 2003 In studies on the mechanism of short- and long-term mu opioid regulation of the ERK signaling pathway, we show that the mu opioid agonist [d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO), acting via the endogenous mu opioid receptor (MOR), induced sequential epidermal growth factor receptor (EGF) receptor (EGFR) Tyr phosphorylation, Ser phosphorylation, and down-regulation in immortalized rat cortical astrocytes. Serine 332-335 proenkephalin Rattus norvegicus 165-175 14660057-7 2003 Additionally, treatments with the opioid peptides methionine- and leucine-enkephalin decreased anti-BSA antibody level, mimicking to some extent the effects of ES. Einsteinium 160-162 proenkephalin Rattus norvegicus 74-84 14663008-4 2003 The expression of dynorphin and, to a lesser extent, enkephalin mRNAs was increased in the lesioned striatum of rats that received long-term L-dopa treatment but not in rats that received long-term SCH 58261 + L-dopa treatment. Levodopa 141-147 proenkephalin Rattus norvegicus 53-63 14530213-8 2003 [Met5] enkephalin or [d-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO) (1-10 microM) depressed EPSCs and IPSCs. n-me-phe4 30-39 proenkephalin Rattus norvegicus 50-60 14622157-5 2003 Priming with either SKF38393 or quinpirole further increased GAD67 mRNA in enkephalin (-) and (+) neurons, however, while SKF38393 produced a high and unbalanced activation toward enkephalin (-) neurons, after quinpirole the increase was of low intensity and similar in the two pathways. 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine 20-28 proenkephalin Rattus norvegicus 180-190 14622157-5 2003 Priming with either SKF38393 or quinpirole further increased GAD67 mRNA in enkephalin (-) and (+) neurons, however, while SKF38393 produced a high and unbalanced activation toward enkephalin (-) neurons, after quinpirole the increase was of low intensity and similar in the two pathways. Quinpirole 32-42 proenkephalin Rattus norvegicus 75-85 14622157-5 2003 Priming with either SKF38393 or quinpirole further increased GAD67 mRNA in enkephalin (-) and (+) neurons, however, while SKF38393 produced a high and unbalanced activation toward enkephalin (-) neurons, after quinpirole the increase was of low intensity and similar in the two pathways. Quinpirole 32-42 proenkephalin Rattus norvegicus 180-190 14622157-7 2003 L-DOPA produced a high and similar increase in GAD67 mRNA in enkephalin (-) and (+) neurons. Levodopa 0-6 proenkephalin Rattus norvegicus 61-71 14568115-4 2003 IKs were reduced only by mu-selective agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]enkephalin (DAMGO, 2-121.6 microM). N-Methyl-L-phenylalanine 56-64 proenkephalin Rattus norvegicus 78-88 14730088-0 2003 Influence of acute and chronic 1,2,3,4-tetrahydroisoquinoline administration on the expression of proenkephalin mRNA in the rat striatum. 1,2,3,4-tetrahydroisoquinoline 31-61 proenkephalin Rattus norvegicus 98-111 14730088-7 2003 The present results show that the effect of TIQ on the PENK mRNA expression is different from that described for proparkinsonian model neurotoxins (MPTP, 6-OHDA) as well as for typical neuroleptics, such as haloperidol. Haloperidol 207-218 proenkephalin Rattus norvegicus 55-59 14730088-1 2003 Animal studies have shown that a depletion of dopamine or blockade of dopamine D2 receptors in the striatum produces an increase in striatal proenkephalin (PENK) mRNA expression and an increase in GABAergic transmission in the globus pallidus. Dopamine 46-54 proenkephalin Rattus norvegicus 141-154 14730088-1 2003 Animal studies have shown that a depletion of dopamine or blockade of dopamine D2 receptors in the striatum produces an increase in striatal proenkephalin (PENK) mRNA expression and an increase in GABAergic transmission in the globus pallidus. Dopamine 46-54 proenkephalin Rattus norvegicus 156-160 14730088-4 2003 TIQ administered acutely at the dose of 100 mg/kg ip increased the PENK mRNA expression in the dorsal part of the striatum at two levels I and II (rostral and central striatum, respectively). 1,2,3,4-tetrahydroisoquinoline 0-3 proenkephalin Rattus norvegicus 67-71 12732927-4 2003 In the present study, we have investigated how GABA regulates the expression of the proenkephalin gene. gamma-Aminobutyric Acid 47-51 proenkephalin Rattus norvegicus 84-97 14519525-7 2003 In another experiment, virally mediated ENK gene transfer into the OT of intact rats decreased footshock-induced freezing, and this effect was reversed by naltrexone administration. Naltrexone 155-165 proenkephalin Rattus norvegicus 40-43 14512140-3 2003 We studied the effects of a single acute dose of ethanol on rat nigrostriatal mu opioid receptors by quantitative receptor autoradiography, using [3H] [D-Ala(2),MePhe(4),Gly-ol(5)]-enkephalin ([3H]-DAMGO) as radioligand. Ethanol 49-56 proenkephalin Rattus norvegicus 181-191 12834887-0 2003 SCH 58261, a selective adenosine A2A receptor antagonist, decreases the haloperidol-enhanced proenkephalin mRNA expression in the rat striatum. 5-amino-7-(2-phenylethyl)-2-(2-furyl)pyrazolo(4,3-e)-1,2,4-triazolo(1,5-c)pyrimidine 0-9 proenkephalin Rattus norvegicus 93-106 12834887-0 2003 SCH 58261, a selective adenosine A2A receptor antagonist, decreases the haloperidol-enhanced proenkephalin mRNA expression in the rat striatum. Haloperidol 72-83 proenkephalin Rattus norvegicus 93-106 12834887-3 2003 Since it is believed that main motor symptoms of PD are due to the overactivity of the GABAergic striopallidal pathway, the aim of the present study was to find out whether SCH 58261, a selective antagonist of the adenosine A(2A) receptors, is capable of counteracting both the catalepsy and the enhancement of proenkephalin (PENK) mRNA expression in the rat striatum, induced by haloperidol administered at 1.5 mg/kg s.c. 3 times, every 3 h. Systemic administration of SCH 58261 (5 mg/kg i.p., 3 times, every 3 h, 10 min before haloperidol), partially decreased the haloperidol-induced catalepsy and the increase in the PENK mRNA expression in both dorsolateral and ventrolateral parts of the striatum at all three examined levels. 5-amino-7-(2-phenylethyl)-2-(2-furyl)pyrazolo(4,3-e)-1,2,4-triazolo(1,5-c)pyrimidine 173-182 proenkephalin Rattus norvegicus 311-324 12834887-3 2003 Since it is believed that main motor symptoms of PD are due to the overactivity of the GABAergic striopallidal pathway, the aim of the present study was to find out whether SCH 58261, a selective antagonist of the adenosine A(2A) receptors, is capable of counteracting both the catalepsy and the enhancement of proenkephalin (PENK) mRNA expression in the rat striatum, induced by haloperidol administered at 1.5 mg/kg s.c. 3 times, every 3 h. Systemic administration of SCH 58261 (5 mg/kg i.p., 3 times, every 3 h, 10 min before haloperidol), partially decreased the haloperidol-induced catalepsy and the increase in the PENK mRNA expression in both dorsolateral and ventrolateral parts of the striatum at all three examined levels. 5-amino-7-(2-phenylethyl)-2-(2-furyl)pyrazolo(4,3-e)-1,2,4-triazolo(1,5-c)pyrimidine 173-182 proenkephalin Rattus norvegicus 326-330 12834887-3 2003 Since it is believed that main motor symptoms of PD are due to the overactivity of the GABAergic striopallidal pathway, the aim of the present study was to find out whether SCH 58261, a selective antagonist of the adenosine A(2A) receptors, is capable of counteracting both the catalepsy and the enhancement of proenkephalin (PENK) mRNA expression in the rat striatum, induced by haloperidol administered at 1.5 mg/kg s.c. 3 times, every 3 h. Systemic administration of SCH 58261 (5 mg/kg i.p., 3 times, every 3 h, 10 min before haloperidol), partially decreased the haloperidol-induced catalepsy and the increase in the PENK mRNA expression in both dorsolateral and ventrolateral parts of the striatum at all three examined levels. 5-amino-7-(2-phenylethyl)-2-(2-furyl)pyrazolo(4,3-e)-1,2,4-triazolo(1,5-c)pyrimidine 173-182 proenkephalin Rattus norvegicus 621-625 12967683-7 2003 These findings suggest that early-phase isoflurane-induced hypotension may be due to activation of peripheral mu-opioid receptors by an endogenous opioid peptide, possibly related to methionine-enkephalin. Isoflurane 40-50 proenkephalin Rattus norvegicus 194-204 12967683-7 2003 These findings suggest that early-phase isoflurane-induced hypotension may be due to activation of peripheral mu-opioid receptors by an endogenous opioid peptide, possibly related to methionine-enkephalin. Methionine 183-193 proenkephalin Rattus norvegicus 194-204 12899684-3 2003 The mu-receptor agonist, DAMGO ([d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin) inhibited high K+-induced peptide release in a dose-dependent manner, with oxytocin release being more sensitive to block than vasopressin release at all concentrations tested. n-me-phe4 40-49 proenkephalin Rattus norvegicus 59-69 12942748-2 2003 Enkephalinase activity was assayed in vitro by the rate of 3H-Leu-enkephalin hydrolysis in the presence of the tested peptides. Tritium 59-61 proenkephalin Rattus norvegicus 66-76 12942748-6 2003 The interaction between the peptides and opioid receptors was estimated using a radioreceptor method with [3H][D-Ala2, D-Leu5]-enkephalin. Tritium 107-109 proenkephalin Rattus norvegicus 127-137 12834790-1 2003 Pretreatment with the GABA(A) receptor antagonist, bicuculline or the GABA(B) receptor antagonist, saclofen, into the nucleus accumbens (Nacc) shell, respectively, potentiates and reduces feeding elicited by the mu opioid agonist, [D-Ala(2), Nme(4), Gly-ol(5)]-enkephalin (DAMGO), administered into the same site. Bicuculline 51-62 proenkephalin Rattus norvegicus 261-271 12834790-1 2003 Pretreatment with the GABA(A) receptor antagonist, bicuculline or the GABA(B) receptor antagonist, saclofen, into the nucleus accumbens (Nacc) shell, respectively, potentiates and reduces feeding elicited by the mu opioid agonist, [D-Ala(2), Nme(4), Gly-ol(5)]-enkephalin (DAMGO), administered into the same site. saclofen 99-107 proenkephalin Rattus norvegicus 261-271 12732927-8 2003 In addition, the GABAB receptor agonist baclofen increased the neocortical expression of the proenkephalin gene mainly in cells located in layers V/VI of the neocortex. Baclofen 40-48 proenkephalin Rattus norvegicus 93-106 12732927-10 2003 Also muscimol, an agonist at GABAA receptors, enhanced the expression of the proenkephalin gene. Muscimol 5-13 proenkephalin Rattus norvegicus 77-90 12621115-0 2003 Chronic prenatal nicotine exposure alters enkephalin mRNA regulation in the perinatal rat adrenal medulla. Nicotine 17-25 proenkephalin Rattus norvegicus 42-52 12845226-9 2003 However, as found previously in DOCA-treated rats, there were increased enkephalin (ENK)-mRNA and decreased dopamine transporter (DAT) binding levels throughout the striatum in Lasix+salt and decreased ENK-mRNA in Lasixnosalt rats versus Vehicle. Desoxycorticosterone Acetate 32-36 proenkephalin Rattus norvegicus 72-82 12845226-9 2003 However, as found previously in DOCA-treated rats, there were increased enkephalin (ENK)-mRNA and decreased dopamine transporter (DAT) binding levels throughout the striatum in Lasix+salt and decreased ENK-mRNA in Lasixnosalt rats versus Vehicle. Desoxycorticosterone Acetate 32-36 proenkephalin Rattus norvegicus 84-87 12845226-9 2003 However, as found previously in DOCA-treated rats, there were increased enkephalin (ENK)-mRNA and decreased dopamine transporter (DAT) binding levels throughout the striatum in Lasix+salt and decreased ENK-mRNA in Lasixnosalt rats versus Vehicle. Desoxycorticosterone Acetate 32-36 proenkephalin Rattus norvegicus 202-205 12845226-13 2003 Thus, these findings along with our neurochemical results suggest that mesolimbic enkephalin might impact salt intake through dopaminergic systems. Salts 106-110 proenkephalin Rattus norvegicus 82-92 12621115-1 2003 Prenatal exposure to nicotine significantly increases enkephalin mRNA levels in the rat adrenal medulla prenatally, and postnatally the normal up-regulation is obliterated. Nicotine 21-29 proenkephalin Rattus norvegicus 54-64 14622711-5 2003 Also, intra-accumbens administration of the mu-agonist [D-Ala2, N-Me-Phe(4,) Gly5-ol]-enkephalin (DAMGO) alone was sufficient to induce antinociception in withdrawing rats, whereas a combination of both mu- and delta-receptor agonists (ie, DAMGO and D-Pen(2,5)-enkephalin [DPDPE], respectively) is required to induce antinociception in naive rats. d-ala2, n-me-phe(4,) gly5-ol 56-84 proenkephalin Rattus norvegicus 86-96 12672534-5 2003 [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) (MOP-agonist) and spiradoline (KOP-agonist) significantly reduced OXA-evoked release with the concentration producing 50% of the maximal inhibition (EC(50)) [maximal inhibition (E(max))] of 3.2 microM [41.8%] and 4.3 microM [54.9%] respectively. N-Methyl-L-phenylalanine 10-18 proenkephalin Rattus norvegicus 33-43 12672534-5 2003 [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) (MOP-agonist) and spiradoline (KOP-agonist) significantly reduced OXA-evoked release with the concentration producing 50% of the maximal inhibition (EC(50)) [maximal inhibition (E(max))] of 3.2 microM [41.8%] and 4.3 microM [54.9%] respectively. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 45-50 proenkephalin Rattus norvegicus 33-43 12672534-5 2003 [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) (MOP-agonist) and spiradoline (KOP-agonist) significantly reduced OXA-evoked release with the concentration producing 50% of the maximal inhibition (EC(50)) [maximal inhibition (E(max))] of 3.2 microM [41.8%] and 4.3 microM [54.9%] respectively. morpholinopropane sulfonic acid 53-56 proenkephalin Rattus norvegicus 33-43 12672534-5 2003 [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO) (MOP-agonist) and spiradoline (KOP-agonist) significantly reduced OXA-evoked release with the concentration producing 50% of the maximal inhibition (EC(50)) [maximal inhibition (E(max))] of 3.2 microM [41.8%] and 4.3 microM [54.9%] respectively. Oxazolone 118-121 proenkephalin Rattus norvegicus 33-43 12668043-5 2003 The GABA(A) receptor-activated Cl(-) current was potentiated by a mu-opioid receptor agonist, [D-Ala(2),N-MePhe(4),Gly(5)-ol]-enkephalin acetate (DAMGO). n-mephe 104-111 proenkephalin Rattus norvegicus 126-136 12618704-1 2003 OBJECTIVE: The endogenous opioid [Met(5)]-enkephalin (opioid growth factor [OGF]) is a tonically active, receptor-mediated inhibitory growth peptide in developing and adult vasculature. met(5) 34-40 proenkephalin Rattus norvegicus 42-52 12650971-2 2003 We have previously shown that RB101, a dual inhibitor of enkephalin-degrading enzymes, decreased carrageenin-evoked c-Fos protein expression at the spinal cord level in awake rats. RB 101 30-35 proenkephalin Rattus norvegicus 57-67 12650971-2 2003 We have previously shown that RB101, a dual inhibitor of enkephalin-degrading enzymes, decreased carrageenin-evoked c-Fos protein expression at the spinal cord level in awake rats. Carrageenan 97-108 proenkephalin Rattus norvegicus 57-67 12663056-0 2003 Up-regulation of methionine-enkephalin-like immunoreactivity by 2,3,7,8-tetrachlorodibenzo-p-dioxin treatment in the forebrain of the Long-Evans rat. Methionine 17-27 proenkephalin Rattus norvegicus 28-38 12573804-2 2003 Several studies have reported that the administration of morphine induces changes in the levels and/or activity of endogenous opioid peptides (enkephalin, dynorphin) and their precursors in specific brain regions of the adult CNS. Morphine 57-65 proenkephalin Rattus norvegicus 143-153 12569074-14 2003 Similarly, the potency of Met(5)-enkephalin to inhibit locus coeruleus neurons was decreased when 2-BFI (100 micro M) was applied to rat brain slices (EC(50) increased by 5.6; P<0.05). 2-(2-benzofuranyl)-2-imidazoline 98-103 proenkephalin Rattus norvegicus 33-43 12663056-0 2003 Up-regulation of methionine-enkephalin-like immunoreactivity by 2,3,7,8-tetrachlorodibenzo-p-dioxin treatment in the forebrain of the Long-Evans rat. 2,3,7,8-tetrachlorodibenzo-p 64-92 proenkephalin Rattus norvegicus 28-38 12663056-0 2003 Up-regulation of methionine-enkephalin-like immunoreactivity by 2,3,7,8-tetrachlorodibenzo-p-dioxin treatment in the forebrain of the Long-Evans rat. Dioxins 93-99 proenkephalin Rattus norvegicus 28-38 12663056-4 2003 In this study, we investigated the effects of TCDD gastric administration on methionine-enkephalin (MEK) immunoreactivity in the brain of the Long-Evans rat, the species strain considered to be the most TCDD-susceptible, using immunohistochemical staining. Polychlorinated Dibenzodioxins 46-50 proenkephalin Rattus norvegicus 88-98 12725847-0 2003 Antinociceptive effects of RB101(S), a complete inhibitor of enkephalin-catabolizing enzymes, are enhanced by (+)-HA966, a functional NMDA receptor antagonist: a c-Fos study in the rat spinal cord. RB 101 27-32 proenkephalin Rattus norvegicus 61-71 12503000-0 2003 Spinal nitric oxide contributes to the analgesic effect of intrathecal [d-pen2,d-pen5]-enkephalin in normal and diabetic rats. Nitric Oxide 7-19 proenkephalin Rattus norvegicus 87-97 12488540-3 2003 In GH3 cells expressing only micro receptors (GH3MOR cells), the micro receptor-specific ligand [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO) inhibited spontaneous Ca 2+ signaling by the inhibition of voltage-gated Ca 2+ channels, activation of inward-rectifying K+ channels, and inhibition of adenylyl cyclase. n-me-phe4 104-113 proenkephalin Rattus norvegicus 123-133 12542667-5 2003 Ciproxifan strongly potentiated the decrease of proenkephalin mRNA expression induced by methamphetamine. ciproxifan 0-10 proenkephalin Rattus norvegicus 48-61 12542667-5 2003 Ciproxifan strongly potentiated the decrease of proenkephalin mRNA expression induced by methamphetamine. Methamphetamine 89-104 proenkephalin Rattus norvegicus 48-61 12488540-3 2003 In GH3 cells expressing only micro receptors (GH3MOR cells), the micro receptor-specific ligand [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO) inhibited spontaneous Ca 2+ signaling by the inhibition of voltage-gated Ca 2+ channels, activation of inward-rectifying K+ channels, and inhibition of adenylyl cyclase. gly5-ol 114-121 proenkephalin Rattus norvegicus 123-133 14580949-3 2003 We report here that, in a rat model, the results of studies using double immunofluorescence labeling with antibodies directed against markers specific to candidate cell types suggest that the cells responding to haloperidol and clozapine in all three sites are: 1) neurons, rather than astrocytes; 2) inhibitory GABA neurons, but not acetylcholinergic neurons; and 3) dynorphin-containing GABA neurons, but not M-enkephalin-containing GABA neurons. Haloperidol 212-223 proenkephalin Rattus norvegicus 413-423 14580949-3 2003 We report here that, in a rat model, the results of studies using double immunofluorescence labeling with antibodies directed against markers specific to candidate cell types suggest that the cells responding to haloperidol and clozapine in all three sites are: 1) neurons, rather than astrocytes; 2) inhibitory GABA neurons, but not acetylcholinergic neurons; and 3) dynorphin-containing GABA neurons, but not M-enkephalin-containing GABA neurons. Clozapine 228-237 proenkephalin Rattus norvegicus 413-423 12508089-4 2003 In this report, we examined the interaction between butyrate differentiation of rat pheochromocytoma cells and cholinergic-nicotinic induction of the neuropeptide (enkephalin) and catecholamine-related biosynthetic enzymes (tyrosine hydroxylase, dopamine beta-hydroxylase, phenylethanolamine N-methyltransferase). Butyrates 52-60 proenkephalin Rattus norvegicus 164-174 12605901-0 2003 Tyrosine kinase B and C receptors in the neostriatum and nucleus accumbens are co-localized in enkephalin-positive and enkephalin-negative neuronal profiles and their expression is influenced by cocaine. Cocaine 195-202 proenkephalin Rattus norvegicus 95-105 12605901-0 2003 Tyrosine kinase B and C receptors in the neostriatum and nucleus accumbens are co-localized in enkephalin-positive and enkephalin-negative neuronal profiles and their expression is influenced by cocaine. Cocaine 195-202 proenkephalin Rattus norvegicus 119-129 12486178-5 2002 Of these neurons, 53% responded only to the mu-opioid agonist D-Ala2, N-Me-Phe4, Gly-ol5 enkephalin, 14% responded only to the kappa-opioid agonist U-69593, and another group responded to both mu and kappa opioids (23%). U 69593 148-155 proenkephalin Rattus norvegicus 89-99 12459691-6 2002 [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin (DAMGO, 10 microm)-stimulated [35S]GTPgammaS binding was performed in both tissue sections and isolated membranes. [d-ala2,n-mephe4 0-16 proenkephalin Rattus norvegicus 26-36 12459691-6 2002 [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin (DAMGO, 10 microm)-stimulated [35S]GTPgammaS binding was performed in both tissue sections and isolated membranes. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 38-43 proenkephalin Rattus norvegicus 26-36 12459691-6 2002 [D-Ala2,N-MePhe4,Gly5-ol]-enkephalin (DAMGO, 10 microm)-stimulated [35S]GTPgammaS binding was performed in both tissue sections and isolated membranes. Sulfur-35 68-71 proenkephalin Rattus norvegicus 26-36 12459691-8 2002 However, [35S]GTPgammaS bindings in the spinal dorsal horn stimulated by other G protein-coupled receptor agonists, including [D-Pen2,D-Pen5]-enkephalin, R(-)N6-(2-phenylisopropyl)-adenosine, and WIN-55212, were not significantly altered in diabetic rats. Sulfur-35 10-13 proenkephalin Rattus norvegicus 142-152 12459691-8 2002 However, [35S]GTPgammaS bindings in the spinal dorsal horn stimulated by other G protein-coupled receptor agonists, including [D-Pen2,D-Pen5]-enkephalin, R(-)N6-(2-phenylisopropyl)-adenosine, and WIN-55212, were not significantly altered in diabetic rats. Guanosine 5'-O-(3-Thiotriphosphate) 14-23 proenkephalin Rattus norvegicus 142-152 12503826-0 2002 Gender differences in proenkephalin gene expression response to delta9-tetrahydrocannabinol in the hypothalamus of the rat. Dronabinol 64-91 proenkephalin Rattus norvegicus 22-35 12438523-0 2002 Role of spinal nitric oxide in the inhibitory effect of [D-Pen2, D-Pen5]-enkephalin on ascending dorsal horn neurons in normal and diabetic rats. Nitric Oxide 15-27 proenkephalin Rattus norvegicus 73-83 12503826-1 2002 Chronic exposure to delta9-tetrahydrocannabinol (delta9-THC) produces an activation of preproenkephalin (PENK) gene expression in the rat hypothalamus. Dronabinol 20-47 proenkephalin Rattus norvegicus 87-103 12503826-1 2002 Chronic exposure to delta9-tetrahydrocannabinol (delta9-THC) produces an activation of preproenkephalin (PENK) gene expression in the rat hypothalamus. Dronabinol 20-47 proenkephalin Rattus norvegicus 105-109 12503826-1 2002 Chronic exposure to delta9-tetrahydrocannabinol (delta9-THC) produces an activation of preproenkephalin (PENK) gene expression in the rat hypothalamus. Dronabinol 49-59 proenkephalin Rattus norvegicus 87-103 12503826-1 2002 Chronic exposure to delta9-tetrahydrocannabinol (delta9-THC) produces an activation of preproenkephalin (PENK) gene expression in the rat hypothalamus. Dronabinol 49-59 proenkephalin Rattus norvegicus 105-109 12503826-3 2002 However, whether gonadal steroids regulate delta9-THC effects on PENK gene expression in the hypothalamus of male and female rats remains unknown. Steroids 25-33 proenkephalin Rattus norvegicus 65-69 12503826-3 2002 However, whether gonadal steroids regulate delta9-THC effects on PENK gene expression in the hypothalamus of male and female rats remains unknown. Dronabinol 43-53 proenkephalin Rattus norvegicus 65-69 12503826-7 2002 In males, delta9-THC administration to intact animals induced PENK mRNA in the paraventricular nucleus (PVN) and ventromedial nucleus (VMN) of the hypothalamus. Dronabinol 10-20 proenkephalin Rattus norvegicus 62-66 12503826-9 2002 However, delta9-THC treatment induced PENK gene expression to the same extent in both hypothalamic nuclei of intact, castrated and DHT-replaced males. Dronabinol 9-19 proenkephalin Rattus norvegicus 38-42 12503826-11 2002 delta9-THC administration increased PENK gene expression in castrated females, but had no effect in the oestradiol-replaced group. Dronabinol 0-10 proenkephalin Rattus norvegicus 36-40 12424303-9 2002 [D-Pen(2), D-Pen(5)]-enkephalin (DPDPE, 1 microM) significantly decreased the frequency of GABA-mediated miniature inhibitory postsynaptic currents (IPSCs) of nine DiI-labeled LC neurons from 2.1 +/- 0.5 to 0.7 +/- 0.2 Hz without altering their amplitude and the kinetics. gamma-Aminobutyric Acid 91-95 proenkephalin Rattus norvegicus 21-31 12419523-3 2002 Retrograde transport of Fluoro-Gold (FG) from the LC and transport of a protein-gold tracer from the NTS was combined with detection of an antibody directed against ENK in the PGi. 2cer 176-179 proenkephalin Rattus norvegicus 165-168 12424303-9 2002 [D-Pen(2), D-Pen(5)]-enkephalin (DPDPE, 1 microM) significantly decreased the frequency of GABA-mediated miniature inhibitory postsynaptic currents (IPSCs) of nine DiI-labeled LC neurons from 2.1 +/- 0.5 to 0.7 +/- 0.2 Hz without altering their amplitude and the kinetics. dilC18(3) dye 164-167 proenkephalin Rattus norvegicus 21-31 12393059-0 2002 [Met5]enkephalin-Arg-Gly-Leu-induced antinociception is greatly increased by peptidase inhibitors. Arginine 17-20 proenkephalin Rattus norvegicus 6-16 12388635-3 2002 The mu-opioids [D-Ala(2)-N-Me-Phe(4),Gly(5)-ol]enkephalin (DAMGO), endomorphin-1, and endomorphin-2 were administered by reverse dialysis infusion into the DRN. mu-opioids 4-14 proenkephalin Rattus norvegicus 47-57 12384245-9 2002 These results are the first to show directly that orally administered KW-6002 is distributed selectively to the striatum and that it modulates the activity of striatopallidal enkephalin-containing neurons but not striatonigral substance P-containing neurons. istradefylline 70-77 proenkephalin Rattus norvegicus 175-185 12393059-0 2002 [Met5]enkephalin-Arg-Gly-Leu-induced antinociception is greatly increased by peptidase inhibitors. glycylleucine 21-28 proenkephalin Rattus norvegicus 6-16 12393059-1 2002 Previous in vitro studies showed that the degradation of [Met(5)]enkephalin-Arg-Gly-Leu by cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors: amastatin, captopril and phosphoramidon. amastatin 197-206 proenkephalin Rattus norvegicus 65-75 12393059-1 2002 Previous in vitro studies showed that the degradation of [Met(5)]enkephalin-Arg-Gly-Leu by cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors: amastatin, captopril and phosphoramidon. Captopril 208-217 proenkephalin Rattus norvegicus 65-75 12393059-1 2002 Previous in vitro studies showed that the degradation of [Met(5)]enkephalin-Arg-Gly-Leu by cerebral membrane preparations is almost completely prevented by a mixture of three peptidase inhibitors: amastatin, captopril and phosphoramidon. phosphoramidon 222-236 proenkephalin Rattus norvegicus 65-75 14622740-7 2002 Peripheral administration of a mu opioid agonist, [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin, significantly attenuated bradykinin mechanical hyperalgesia after sympathectomy plus vagotomy. N-Methyl-L-phenylalanine 60-68 proenkephalin Rattus norvegicus 83-93 12385794-2 2002 Infusion of 2 microg of the selective delta-OR agonist [D-Pen(2),D-Pen(5)]-enkephalin (DPDPE), into the third ventricle facilitated lordosis behavior in ovariectomized (OVX) rats injected with estrogen (E) 48 and 24 h before behavioral testing. d-pen 56-61 proenkephalin Rattus norvegicus 75-85 12144857-4 2002 In control and sham-operated rats intracisternal injection of clonidine and the direct opioid receptor (delta type) stimulant peptide (D-Ala(2), D-Leu(5))-enkephalin caused a potent and fully naloxone-reversible (i.e. opioid receptor-mediated) protection against acidified ethanol-induced mucosal damage. Naloxone 192-200 proenkephalin Rattus norvegicus 155-165 12400874-8 2002 Meanwhile, the decrease of thymocyte proliferation in AA rats had a marked relation with the decrease of Met-Enk level in these thymocytes, melatonin (10(-10) or 10(-6) mol l(-1)) could markedly enhance the Met-Enk level, which were blocked by nifedipine, a Ca2+ channel antagonist. Melatonin 140-149 proenkephalin Rattus norvegicus 211-214 12144857-4 2002 In control and sham-operated rats intracisternal injection of clonidine and the direct opioid receptor (delta type) stimulant peptide (D-Ala(2), D-Leu(5))-enkephalin caused a potent and fully naloxone-reversible (i.e. opioid receptor-mediated) protection against acidified ethanol-induced mucosal damage. Ethanol 273-280 proenkephalin Rattus norvegicus 155-165 12523490-0 2002 Effect of cocaine and amphetamine on biosynthesis of proenkephalin and prodynorphin in some regions of the rat limbic system. Cocaine 10-17 proenkephalin Rattus norvegicus 53-66 12177222-7 2002 The strong H3-receptor mRNA expression in enkephalin neurons suggests that the synergistic neurochemical and motor effects of ciproxifan and haloperidol result from direct H3/D2-receptor interactions, leading to an enhanced activation of striatopallidal neurons of the indirect movement pathway. ciproxifan 126-136 proenkephalin Rattus norvegicus 42-52 12177222-7 2002 The strong H3-receptor mRNA expression in enkephalin neurons suggests that the synergistic neurochemical and motor effects of ciproxifan and haloperidol result from direct H3/D2-receptor interactions, leading to an enhanced activation of striatopallidal neurons of the indirect movement pathway. Haloperidol 141-152 proenkephalin Rattus norvegicus 42-52 12127030-5 2002 Furthermore, the number of 5-HT(1A) receptor mRNA and GABA or ENK immunoreactive double-labeled cells was also markedly increased 8h after carrageenan injection. Carrageenan 139-150 proenkephalin Rattus norvegicus 62-65 12144936-3 2002 The functional coupling of mu-opioid receptors to G proteins was determined autoradiographically using Tyr-D-Ala-Gly-N(Me)Phe-Gly-ol-enkephalin-stimulated [35S]GTPgammaS binding in brain cryostat sections. tyr-d-ala-gly-n 103-118 proenkephalin Rattus norvegicus 133-143 12144936-3 2002 The functional coupling of mu-opioid receptors to G proteins was determined autoradiographically using Tyr-D-Ala-Gly-N(Me)Phe-Gly-ol-enkephalin-stimulated [35S]GTPgammaS binding in brain cryostat sections. Phenylalanine 122-125 proenkephalin Rattus norvegicus 133-143 12144936-3 2002 The functional coupling of mu-opioid receptors to G proteins was determined autoradiographically using Tyr-D-Ala-Gly-N(Me)Phe-Gly-ol-enkephalin-stimulated [35S]GTPgammaS binding in brain cryostat sections. Glycine 113-116 proenkephalin Rattus norvegicus 133-143 12144936-3 2002 The functional coupling of mu-opioid receptors to G proteins was determined autoradiographically using Tyr-D-Ala-Gly-N(Me)Phe-Gly-ol-enkephalin-stimulated [35S]GTPgammaS binding in brain cryostat sections. ol 130-132 proenkephalin Rattus norvegicus 133-143 12144936-3 2002 The functional coupling of mu-opioid receptors to G proteins was determined autoradiographically using Tyr-D-Ala-Gly-N(Me)Phe-Gly-ol-enkephalin-stimulated [35S]GTPgammaS binding in brain cryostat sections. Sulfur-35 156-159 proenkephalin Rattus norvegicus 133-143 12523490-0 2002 Effect of cocaine and amphetamine on biosynthesis of proenkephalin and prodynorphin in some regions of the rat limbic system. Amphetamine 22-33 proenkephalin Rattus norvegicus 53-66 12523490-3 2002 The goal of the present study was to investigate the influence of acutely and chronically administered drugs of abuse, cocaine and amphetamine on biosynthesis of prodynorphin and proenkephalin in the rat amygdala, the structure involved in the mechanism of drug addiction. Cocaine 119-126 proenkephalin Rattus norvegicus 179-192 12523490-3 2002 The goal of the present study was to investigate the influence of acutely and chronically administered drugs of abuse, cocaine and amphetamine on biosynthesis of prodynorphin and proenkephalin in the rat amygdala, the structure involved in the mechanism of drug addiction. Amphetamine 131-142 proenkephalin Rattus norvegicus 179-192 12523490-7 2002 Chronic amphetamine (2.5 mg/kg twice daily for 5 days) administration decreased proenkephalin and increased prodynorphin mRNA level in the central nucleus of the amygdala (at 24 and 48 h). Amphetamine 8-19 proenkephalin Rattus norvegicus 80-93 11954048-0 2002 Differential regulation of GAD67, enkephalin and dynorphin mRNAs by chronic-intermittent L-dopa and A2A receptor blockade plus L-dopa in dopamine-denervated rats. Levodopa 89-95 proenkephalin Rattus norvegicus 34-44 12079685-0 2002 Depressant effect on a C-fibre reflex in the rat, of RB101, a dual inhibitor of enkephalin-degrading enzymes. RB 101 53-58 proenkephalin Rattus norvegicus 80-90 11954048-6 2002 Chronic-intermittent L-dopa (6 mg/kg) treatment increased the striatal levels of GAD67, dynorphin, and enkephalin mRNA in the lesioned side as compared to the vehicle treatment. Levodopa 21-27 proenkephalin Rattus norvegicus 103-113 11954048-0 2002 Differential regulation of GAD67, enkephalin and dynorphin mRNAs by chronic-intermittent L-dopa and A2A receptor blockade plus L-dopa in dopamine-denervated rats. Levodopa 127-133 proenkephalin Rattus norvegicus 34-44 11954048-5 2002 Unilateral 6-OHDA lesion produced an elevation in striatal GAD67 and enkephalin mRNA levels and to a decrease in dynorphin mRNA levels. Oxidopamine 11-17 proenkephalin Rattus norvegicus 69-79 12269402-9 2002 These results suggest that proENK mRNA expression induced by repeated nicotine administrations may be mediated by AP-1 proteins, such as c-Fos, c-Jun and Fra-2 rather than CREB via interacting to the ENKCRE-2 DNA binding domain in rat adrenal medulla. Nicotine 70-78 proenkephalin Rattus norvegicus 27-33 12269402-0 2002 Role of proto-oncogenes in the regulation of proenkephalin mRNA expression induced by repeated nicotine injections in rat adrenal medulla. Nicotine 95-103 proenkephalin Rattus norvegicus 45-58 12269402-1 2002 We have studied the effect of repeated systemic administrations of nicotine (3 mg/kg) at 30 min intervals on proenkephalin (proENK) mRNA level in rat adrenal gland. Nicotine 67-75 proenkephalin Rattus norvegicus 109-122 11826132-4 2002 A large increase (340%) of Met-enkephalin was observed in the periaqueductal gray matter, a structure involved in morphine withdrawal syndrome, in morphine-dependent rats. Morphine 114-122 proenkephalin Rattus norvegicus 31-41 12269402-1 2002 We have studied the effect of repeated systemic administrations of nicotine (3 mg/kg) at 30 min intervals on proenkephalin (proENK) mRNA level in rat adrenal gland. Nicotine 67-75 proenkephalin Rattus norvegicus 124-130 12269402-2 2002 Northern blot analysis has shown that proENK mRNA expression was enhanced by repeated nicotine administrations. Nicotine 86-94 proenkephalin Rattus norvegicus 38-44 12015431-3 2002 The action of ME was mimicked by the mu-selective agonist [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin (DAMGO), and was partially blocked by the mu-selective antagonists naloxonazine and D-Phe-Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH(2) (CTAP). N-Methyl-L-phenylalanine 69-77 proenkephalin Rattus norvegicus 93-103 12063085-1 2002 In behavioural tests, RB101 (N-[(S)-2-benzyl-3[(S)(2-amino-4-methyl-thio)butyldithio]-1-oxopropyl]-L-phenylalanine benzyl ester), a mixed inhibitor of enkephalin-degrading enzymes, induces antinociceptive effects without producing tolerance, or cross-tolerance with morphine. n-[(s)-2-benzyl-3[(s)(2-amino-4-methyl-thio)butyldithio]-1-oxopropyl]-l-phenylalanine benzyl ester 29-127 proenkephalin Rattus norvegicus 151-161 11982623-0 2002 Intrinsic GABA neurons inhibit proenkephalin gene expression in slice cultures of rat neostriatum. gamma-Aminobutyric Acid 10-14 proenkephalin Rattus norvegicus 31-44 11982623-1 2002 In the neostriatum, the proenkephalin gene is expressed in medium spiny GABA neurons, which project to the globus pallidus. gamma-Aminobutyric Acid 72-76 proenkephalin Rattus norvegicus 24-37 11982623-3 2002 In these experiments we have used slice cultures of rat neostriatum to study the role of GABA in proenkephalin gene expression. gamma-Aminobutyric Acid 89-93 proenkephalin Rattus norvegicus 97-110 11982623-4 2002 Our results show that GABA is released from neostriatal neurons and negatively regulates the proenkephalin gene expression induced by NMDA receptor stimulation. gamma-Aminobutyric Acid 22-26 proenkephalin Rattus norvegicus 93-106 11842443-6 2002 In addition, mRNA levels for CB1 receptor, neuronal-specific enolase, proenkephalin, and substance P decreased in the caudate-putamen of 3-NP-injected rats. 3-nitropropionic acid 137-141 proenkephalin Rattus norvegicus 70-83 11939714-0 2002 Effect of tianeptine and fluoxetine on the levels of Met-enkephalin and mRNA encoding proenkephalin in the rat. tianeptine 10-20 proenkephalin Rattus norvegicus 86-99 11939714-0 2002 Effect of tianeptine and fluoxetine on the levels of Met-enkephalin and mRNA encoding proenkephalin in the rat. Fluoxetine 25-35 proenkephalin Rattus norvegicus 86-99 11939714-5 2002 From the results obtained in the present study it may be concluded that repeated administration of TIA or FLU induced similar changes in the levels of Met-Enk in the rat hippocampus, striatum, hypothalamus and neurointermediate lobe of pituitary. Fluoxetine 106-109 proenkephalin Rattus norvegicus 155-158 11826132-4 2002 A large increase (340%) of Met-enkephalin was observed in the periaqueductal gray matter, a structure involved in morphine withdrawal syndrome, in morphine-dependent rats. Morphine 147-155 proenkephalin Rattus norvegicus 31-41 11826132-7 2002 Thus, an increase in enkephalin levels was observed in rats placed in the drug-associated compartment and a decrease in the saline-paired side. Sodium Chloride 124-130 proenkephalin Rattus norvegicus 21-31 11746737-0 2002 Antiapoptotic and cytotoxic properties of delta opioid peptide [D-Ala(2),D-Leu(5)]enkephalin in PC12 cells. D-LEUCINE 73-78 proenkephalin Rattus norvegicus 82-92 12373537-8 2002 In contrast, repeated DCG-IV (3 x 1 nmol/4 microl icv) injections enhanced both the control and the haloperidol-increased levels of PENK expression. dcg 22-25 proenkephalin Rattus norvegicus 132-136 12373537-8 2002 In contrast, repeated DCG-IV (3 x 1 nmol/4 microl icv) injections enhanced both the control and the haloperidol-increased levels of PENK expression. Haloperidol 100-111 proenkephalin Rattus norvegicus 132-136 11773315-7 2002 PMA at 10 nM exhibited a similar uncoupling effect on the response of the endogenous opiate receptor to the agonist D-alanine-5-leucine-enkephalin (DADLE) in wild-type and T149A mutant-expressing clones. Tetradecanoylphorbol Acetate 0-3 proenkephalin Rattus norvegicus 136-146 11752206-3 2002 [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin (DAMGO), morphine, and methadone were all effective at blocking inhibitory transmission. N-Methyl-L-phenylalanine 10-18 proenkephalin Rattus norvegicus 33-43 11958872-7 2002 This effect is mainly dependent on opioid peptides released at VTA level since local injections of thiorphan, an inhibitor of enkephalin degradation, strongly increased locomotor response to novelty and this effect is completely prevented by the co-administration of naloxone methobromide. Thiorphan 99-108 proenkephalin Rattus norvegicus 126-136 11958872-7 2002 This effect is mainly dependent on opioid peptides released at VTA level since local injections of thiorphan, an inhibitor of enkephalin degradation, strongly increased locomotor response to novelty and this effect is completely prevented by the co-administration of naloxone methobromide. N-methylnaloxone 267-288 proenkephalin Rattus norvegicus 126-136 11832216-3 2002 Here we demonstrate that [D-Ala(2)-MePhe(4)-Gly(5)-ol] enkephalin (DAMGO) can facilitate the ability of morphine to stimulate MOR endocytosis. Morphine 104-112 proenkephalin Rattus norvegicus 55-65 11784705-2 2002 Microinjection of the delta-opioid receptor agonist [D-Pen(2,5)]-enkephalin (DPDPE; 8 mM, 50 nl) bilaterally into the RVLM potently inhibited the post-inspiratory-related burst discharges of lumbar sympathetic nerve activity (LSNA) but had only limited effects on splanchnic sympathetic nerve activity (SSNA) and phrenic nerve discharge. d-pen(2,5) 53-63 proenkephalin Rattus norvegicus 65-75 11784705-4 2002 Injection of the mu-opioid receptor agonist, [D-Ala(2),N-Me-Phe(4),Gly-ol(5)]-enkephalin (DAMGO; 4 mM, 50 nl), also elicited a greater inhibition of LSNA than SSNA accompanied by an abolition of phrenic nerve discharge. N-Methyl-L-phenylalanine 55-63 proenkephalin Rattus norvegicus 78-88 11784705-4 2002 Injection of the mu-opioid receptor agonist, [D-Ala(2),N-Me-Phe(4),Gly-ol(5)]-enkephalin (DAMGO; 4 mM, 50 nl), also elicited a greater inhibition of LSNA than SSNA accompanied by an abolition of phrenic nerve discharge. gly-ol 67-73 proenkephalin Rattus norvegicus 78-88 11746737-1 2002 The delta opioid peptide [D-Ala(2),D-Leu(5)]enkephalin (DADLE) has been shown to promote organ survival and to protect against methamphetamine-induced neurodegeneration. Methamphetamine 127-142 proenkephalin Rattus norvegicus 44-54 11597591-3 2001 Among 505 neurons tested, the barium current passing through the high-voltage activated calcium channels of 172 neurons (34%) were inhibited by 32+/-3% with the application of an mu-opioid agonist, [D-Ala(2),N-MePhe(4),Gly(5)-ol]-enkephalin (DAMGO, 1 microM). Barium 30-36 proenkephalin Rattus norvegicus 230-240 11681851-2 2001 It has long been suspected that increased expression of enkephalin may represent one of the many mechanisms that compensate for dopamine (DA) depletion in Parkinson"s disease. Dopamine 138-140 proenkephalin Rattus norvegicus 56-66 11681851-10 2001 Furthermore, enhanced enkephalin expression observed in Parkinson"s disease may serve to potentiate dopamine acting preferentially at D1 receptors. Dopamine 100-108 proenkephalin Rattus norvegicus 22-32 11720714-5 2001 The mu-opioid agonist, [D-Ala(2),NMe-Phe(4),Gly-ol(5)]-enkephalin in the nucleus accumbens shell significantly increased food intake which was significantly enhanced by AMPA cotreatment. nme-phe 33-40 proenkephalin Rattus norvegicus 55-65 11720714-5 2001 The mu-opioid agonist, [D-Ala(2),NMe-Phe(4),Gly-ol(5)]-enkephalin in the nucleus accumbens shell significantly increased food intake which was significantly enhanced by AMPA cotreatment. gly-ol 44-50 proenkephalin Rattus norvegicus 55-65 11681851-2 2001 It has long been suspected that increased expression of enkephalin may represent one of the many mechanisms that compensate for dopamine (DA) depletion in Parkinson"s disease. Dopamine 128-136 proenkephalin Rattus norvegicus 56-66 11668192-5 2001 Measurable levels of Met-enkephalin-Arg-Phe and nociceptin/orphanin FQ were found in tendon tissue using RIA, whereas dynorphin B could not be detected. Arginine 36-39 proenkephalin Rattus norvegicus 25-35 11668192-5 2001 Measurable levels of Met-enkephalin-Arg-Phe and nociceptin/orphanin FQ were found in tendon tissue using RIA, whereas dynorphin B could not be detected. Phenylalanine 40-43 proenkephalin Rattus norvegicus 25-35 11425502-0 2001 Extinction of cocaine self-administration produces a differential time-related regulation of proenkephalin gene expression in rat brain. Cocaine 14-21 proenkephalin Rattus norvegicus 93-106 11543770-1 2001 The aim of this study was to investigate the facilitatory effects of subanalgesic or low doses of different drugs (acetylsalicylic acid, ibuprofen and morphine) on the antinociceptive responses induced by the endogenous opioid peptides, enkephalins, protected from their catabolism by the dual enkephalin-degrading enzymes inhibitor RB101. Aspirin 115-135 proenkephalin Rattus norvegicus 237-247 11543770-1 2001 The aim of this study was to investigate the facilitatory effects of subanalgesic or low doses of different drugs (acetylsalicylic acid, ibuprofen and morphine) on the antinociceptive responses induced by the endogenous opioid peptides, enkephalins, protected from their catabolism by the dual enkephalin-degrading enzymes inhibitor RB101. Ibuprofen 137-146 proenkephalin Rattus norvegicus 237-247 11543770-1 2001 The aim of this study was to investigate the facilitatory effects of subanalgesic or low doses of different drugs (acetylsalicylic acid, ibuprofen and morphine) on the antinociceptive responses induced by the endogenous opioid peptides, enkephalins, protected from their catabolism by the dual enkephalin-degrading enzymes inhibitor RB101. Morphine 151-159 proenkephalin Rattus norvegicus 237-247 11425502-1 2001 The purpose of this study was to examine the time course effects of extinction of cocaine self-administration behavior on proenkephalin (PENK) gene expression in caudate-putamen nucleus (ST), nucleus accumbens (Acc), olfactory tubercle (Tu), piriform cortex (Pir), ventromedial hypothalamic nucleus (VMN), and central amygdala (Ce) as measured by in situ hybridization histochemistry. Cocaine 82-89 proenkephalin Rattus norvegicus 122-135 11425502-1 2001 The purpose of this study was to examine the time course effects of extinction of cocaine self-administration behavior on proenkephalin (PENK) gene expression in caudate-putamen nucleus (ST), nucleus accumbens (Acc), olfactory tubercle (Tu), piriform cortex (Pir), ventromedial hypothalamic nucleus (VMN), and central amygdala (Ce) as measured by in situ hybridization histochemistry. Cocaine 82-89 proenkephalin Rattus norvegicus 137-141 11425502-7 2001 PENK mRNA levels were significantly higher in the cocaine groups when compared with SALINE group in the ST, Acc, Pir, and Tu regions on days 0, 1, 5, and 10 of the extinction and lower in the Ce region of CONT group when compared to NONCONT and SALINE groups on days 1, 5, and 10 of the extinction period. Cocaine 50-57 proenkephalin Rattus norvegicus 0-4 11425502-7 2001 PENK mRNA levels were significantly higher in the cocaine groups when compared with SALINE group in the ST, Acc, Pir, and Tu regions on days 0, 1, 5, and 10 of the extinction and lower in the Ce region of CONT group when compared to NONCONT and SALINE groups on days 1, 5, and 10 of the extinction period. Sodium Chloride 84-90 proenkephalin Rattus norvegicus 0-4 11425502-7 2001 PENK mRNA levels were significantly higher in the cocaine groups when compared with SALINE group in the ST, Acc, Pir, and Tu regions on days 0, 1, 5, and 10 of the extinction and lower in the Ce region of CONT group when compared to NONCONT and SALINE groups on days 1, 5, and 10 of the extinction period. Sodium Chloride 245-251 proenkephalin Rattus norvegicus 0-4 11425502-8 2001 In the VMN nucleus, PENK mRNA content in CONT group versus NONCONT and SALINE groups was also lower, but there were statistically significant differences only on day 5. Sodium Chloride 71-77 proenkephalin Rattus norvegicus 20-24 11425502-9 2001 These results suggest that changes in PENK gene expression after contingent cocaine administration might be involved in cocaine withdrawal states. Cocaine 76-83 proenkephalin Rattus norvegicus 38-42 11880925-2 2001 Since little is known about the effect of Leu-Enk on insulin and glucagon secretion, it was the aim of this study to determine the role of Leu-Enk on insulin and glucagon secretion from the isolated pancreatic tissue fragments of normal and diabetic rats. Leucine 139-142 proenkephalin Rattus norvegicus 143-146 11880925-6 2001 This Leu-Enk-evoked insulin release was significantly (p < 0.05) blocked by atropine, naloxone and yohimbine (all at 10(-6)M). Leucine 5-8 proenkephalin Rattus norvegicus 9-12 11880925-6 2001 This Leu-Enk-evoked insulin release was significantly (p < 0.05) blocked by atropine, naloxone and yohimbine (all at 10(-6)M). Atropine 79-87 proenkephalin Rattus norvegicus 9-12 11880925-6 2001 This Leu-Enk-evoked insulin release was significantly (p < 0.05) blocked by atropine, naloxone and yohimbine (all at 10(-6)M). Naloxone 89-97 proenkephalin Rattus norvegicus 9-12 11880925-6 2001 This Leu-Enk-evoked insulin release was significantly (p < 0.05) blocked by atropine, naloxone and yohimbine (all at 10(-6)M). Yohimbine 102-111 proenkephalin Rattus norvegicus 9-12 11880925-7 2001 In the same way, Leu-Enk at concentrations of 10(-12)M and 10(-9)M induced significant (p < 0.05) increases in glucagon release from the pancreas of normal rats. Leucine 17-20 proenkephalin Rattus norvegicus 21-24 11880925-8 2001 Atropine, yohimbine but not naloxone significantly (p < 0.05) inhibited Leu-Enk-evoked glucagon release from normal rat pancreas. Atropine 0-8 proenkephalin Rattus norvegicus 79-82 11880925-8 2001 Atropine, yohimbine but not naloxone significantly (p < 0.05) inhibited Leu-Enk-evoked glucagon release from normal rat pancreas. Yohimbine 10-19 proenkephalin Rattus norvegicus 79-82 11880925-8 2001 Atropine, yohimbine but not naloxone significantly (p < 0.05) inhibited Leu-Enk-evoked glucagon release from normal rat pancreas. Leucine 75-78 proenkephalin Rattus norvegicus 79-82 11880925-8 2001 Atropine, yohimbine but not naloxone significantly (p < 0.05) inhibited Leu-Enk-evoked glucagon release from normal rat pancreas. Glucagon 90-98 proenkephalin Rattus norvegicus 79-82 11880925-9 2001 In contrast, Leu-Enk failed to significantly stimulate insulin and glucagon secretion from the pancreas of diabetic rats. Leucine 13-16 proenkephalin Rattus norvegicus 17-20 11880925-10 2001 In conclusion, Leu-Enk stimulates insulin and glucagon secretion from the pancreas of normal rat through the cholinergic, alpha-2 adrenergic and opioid receptor pathways. Leucine 15-18 proenkephalin Rattus norvegicus 19-22 11382404-6 2001 These results suggest that, in the rat astrocyte-enriched culture, C2 ceramide increases proENK mRNA expression via phosphorylation of CREB rather than the increases of AP-1 protein levels. A(2)C 67-69 proenkephalin Rattus norvegicus 89-95 11406319-0 2001 Temporal change of hippocampal enkephalin and dynorphin mRNA following trimethyltin intoxication in rats: effect of anticonvulsant. trimethyltin 71-83 proenkephalin Rattus norvegicus 31-41 11382404-0 2001 Stimulation of astrocyte-enriched culture with C2 ceramide increases proenkephalin mRNA: involvement of cAMP-response element binding protein and mitogen activated protein kinases. N-acetylsphingosine 47-58 proenkephalin Rattus norvegicus 69-82 11382404-6 2001 These results suggest that, in the rat astrocyte-enriched culture, C2 ceramide increases proENK mRNA expression via phosphorylation of CREB rather than the increases of AP-1 protein levels. Ceramides 70-78 proenkephalin Rattus norvegicus 89-95 11382404-0 2001 Stimulation of astrocyte-enriched culture with C2 ceramide increases proenkephalin mRNA: involvement of cAMP-response element binding protein and mitogen activated protein kinases. Cyclic AMP 104-108 proenkephalin Rattus norvegicus 69-82 11382404-7 2001 Additionally, the activations of PKC and p38, but not PKA, calcium/calmodulin-dependent protein kinase II, and ERK, by C2 ceramide play important regulatory roles in C2 ceramide-induced proENK mRNA expression via activating the CREB. Ceramides 122-130 proenkephalin Rattus norvegicus 186-192 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). N-acetylsphingosine 35-46 proenkephalin Rattus norvegicus 84-97 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). N-acetylsphingosine 35-46 proenkephalin Rattus norvegicus 99-105 11382404-7 2001 Additionally, the activations of PKC and p38, but not PKA, calcium/calmodulin-dependent protein kinase II, and ERK, by C2 ceramide play important regulatory roles in C2 ceramide-induced proENK mRNA expression via activating the CREB. Ceramides 169-177 proenkephalin Rattus norvegicus 186-192 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). A(2)C 35-37 proenkephalin Rattus norvegicus 84-97 11292597-1 2001 We investigated the mechanism of action of methionine enkephalin (MEK) on HCl-stimulated secretin release and pancreatic exocrine secretion. Hydrochloric Acid 74-77 proenkephalin Rattus norvegicus 54-64 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). A(2)C 35-37 proenkephalin Rattus norvegicus 99-105 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). Ceramides 38-46 proenkephalin Rattus norvegicus 84-97 11382404-1 2001 In rat astrocyte-enriched culture, C2 ceramide dose- and time-dependently increased proenkephalin (proENK) mRNA; the significant increase began at 6 h after 30 microM C2 ceramide treatment (about 13-fold) and at 12 h after treatment (about 21-fold). Ceramides 38-46 proenkephalin Rattus norvegicus 99-105 11382404-3 2001 The blocking of protein synthesis by cycloheximide (CHX) evokes a further increase of C2 ceramide-induced proENK mRNA and phospho-CREB level, while C2 ceramide-induced increases of AP-1 protein levels were reduced by CHX. Cycloheximide 37-50 proenkephalin Rattus norvegicus 106-112 11382404-3 2001 The blocking of protein synthesis by cycloheximide (CHX) evokes a further increase of C2 ceramide-induced proENK mRNA and phospho-CREB level, while C2 ceramide-induced increases of AP-1 protein levels were reduced by CHX. Cycloheximide 52-55 proenkephalin Rattus norvegicus 106-112 11382404-3 2001 The blocking of protein synthesis by cycloheximide (CHX) evokes a further increase of C2 ceramide-induced proENK mRNA and phospho-CREB level, while C2 ceramide-induced increases of AP-1 protein levels were reduced by CHX. N-acetylsphingosine 86-97 proenkephalin Rattus norvegicus 106-112 11382404-3 2001 The blocking of protein synthesis by cycloheximide (CHX) evokes a further increase of C2 ceramide-induced proENK mRNA and phospho-CREB level, while C2 ceramide-induced increases of AP-1 protein levels were reduced by CHX. Ceramides 89-97 proenkephalin Rattus norvegicus 106-112 11382404-4 2001 The C2 ceramide-induced proENK mRNA expression was not changed significantly by the pretreatment with H89 (a PKA inhibitor), KN62 (a calcium/calmodulin-dependent protein kinase II inhibitor), and PD98059 (an ERK pathway inhibitor). Ceramides 7-15 proenkephalin Rattus norvegicus 24-30 11382404-4 2001 The C2 ceramide-induced proENK mRNA expression was not changed significantly by the pretreatment with H89 (a PKA inhibitor), KN62 (a calcium/calmodulin-dependent protein kinase II inhibitor), and PD98059 (an ERK pathway inhibitor). 2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one 196-203 proenkephalin Rattus norvegicus 24-30 11382404-5 2001 However, calphostin C (a PKC inhibitor) and or SB203580 (a p38 inhibitor) partially but significantly reduced C2 ceramide-induced proENK mRNA expression as well as phospho-CREB level. calphostin C 9-21 proenkephalin Rattus norvegicus 130-136 11382404-5 2001 However, calphostin C (a PKC inhibitor) and or SB203580 (a p38 inhibitor) partially but significantly reduced C2 ceramide-induced proENK mRNA expression as well as phospho-CREB level. SB 203580 47-55 proenkephalin Rattus norvegicus 130-136 11382404-5 2001 However, calphostin C (a PKC inhibitor) and or SB203580 (a p38 inhibitor) partially but significantly reduced C2 ceramide-induced proENK mRNA expression as well as phospho-CREB level. Ceramides 113-121 proenkephalin Rattus norvegicus 130-136 11414652-4 2001 Both orphanin FQ/nociceptin (OFQ/N), an ORL1 agonist, and [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO), a mu-opioid receptor agonist, activated inwardly rectifying K+ (Kir) channels in the ventrolateral PAG. [d-ala2,n-me-phe4 58-75 proenkephalin Rattus norvegicus 85-95 12589405-0 2001 [Inhibition of ATP-activated current by met-Enk in isolated DRG neurons of the rat]. Adenosine Triphosphate 15-18 proenkephalin Rattus norvegicus 44-47 12589405-1 2001 The present study aimed to explore modulation of ATP-activated currents (I(ATP)) by met-Enk in rat DRG neurons. Adenosine Triphosphate 49-52 proenkephalin Rattus norvegicus 88-91 12589405-1 2001 The present study aimed to explore modulation of ATP-activated currents (I(ATP)) by met-Enk in rat DRG neurons. Adenosine Triphosphate 75-78 proenkephalin Rattus norvegicus 88-91 12589405-4 2001 In the 45 ATP sensitive neurons three kinds of responses to application of met-Enk were distinguished: (l) inward currents (29/45), (2) outward currents (9/45), and (3) no effect (7/45). Adenosine Triphosphate 10-13 proenkephalin Rattus norvegicus 79-82 12589405-5 2001 Pretreatment with met-Enk (10(-9)~10(-5) mol/L) suppressed I(ATP) (10(-4) mol/L) in 29 neurons responding to met-Enk with inward currents. Adenosine Triphosphate 61-64 proenkephalin Rattus norvegicus 22-25 12589405-6 2001 The inhibition by met-Enk of I(ATP) could be blocked by naloxone (10(-7) mol/L) in a concentration-dependent manner. Adenosine Triphosphate 31-34 proenkephalin Rattus norvegicus 22-25 12589405-6 2001 The inhibition by met-Enk of I(ATP) could be blocked by naloxone (10(-7) mol/L) in a concentration-dependent manner. Naloxone 56-64 proenkephalin Rattus norvegicus 22-25 12589405-8 2001 A comparison of concentration - response relations of ATP with and without preapplication of met-Enk indicated that after pretreatment with met-Enk (10(-7) mol/L) the curve shifted downward markedly with a decrease of 25 percent; of the maximum value of I(ATP) and unchanged K(d) value. Adenosine Triphosphate 54-57 proenkephalin Rattus norvegicus 97-100 12589405-8 2001 A comparison of concentration - response relations of ATP with and without preapplication of met-Enk indicated that after pretreatment with met-Enk (10(-7) mol/L) the curve shifted downward markedly with a decrease of 25 percent; of the maximum value of I(ATP) and unchanged K(d) value. Adenosine Triphosphate 54-57 proenkephalin Rattus norvegicus 144-147 12589405-8 2001 A comparison of concentration - response relations of ATP with and without preapplication of met-Enk indicated that after pretreatment with met-Enk (10(-7) mol/L) the curve shifted downward markedly with a decrease of 25 percent; of the maximum value of I(ATP) and unchanged K(d) value. Adenosine Triphosphate 256-259 proenkephalin Rattus norvegicus 97-100 12589405-8 2001 A comparison of concentration - response relations of ATP with and without preapplication of met-Enk indicated that after pretreatment with met-Enk (10(-7) mol/L) the curve shifted downward markedly with a decrease of 25 percent; of the maximum value of I(ATP) and unchanged K(d) value. Adenosine Triphosphate 256-259 proenkephalin Rattus norvegicus 144-147 12589405-9 2001 The suppression of I(ATP) by met-Enk was reversed as evidenced by intracellular dialysis of H-9 by using the repatch technique. Adenosine Triphosphate 21-24 proenkephalin Rattus norvegicus 33-36 12589405-10 2001 Taken together, it is suggested that the inhibition by met-Enk of I(ATP) is caused by activation of opiate receptor, which eventually results in phosphorylation of ATP receptor, mediated by modulation of G protein coupling and intracellular signal transduction. Adenosine Triphosphate 68-71 proenkephalin Rattus norvegicus 59-62 11355693-0 2001 Possible roles of JNK pathway in the regulation of hippocampal proenkephalin and immediate early gene expression induced by kainic acid. Kainic Acid 124-135 proenkephalin Rattus norvegicus 63-76 11325808-0 2001 Enhancement of the effects of a complete inhibitor of enkephalin-catabolizing enzymes, RB 101, by a cholecystokinin-B receptor antagonist in diabetic rats. RB 101 87-93 proenkephalin Rattus norvegicus 54-64 11325808-2 2001 RB 101, a complete inhibitor of enkephalin-catabolizing enzymes, has been previously shown to produce antinociception in normal rats after systemic administration. RB 101 0-6 proenkephalin Rattus norvegicus 32-42 11355693-3 2001 KA increased proenkephalin mRNA expression in rat hippocampus, which was decreased by pre-administration with cycloheximide (CHX, a protein synthesis inhibitor). Cycloheximide 110-123 proenkephalin Rattus norvegicus 13-26 11311537-4 2001 Involvement of the GABAergic projection from the ventral pallidum to the mediodorsal thalamus in mu-opioid-induced impairment of working memory was verified by showing that inhibiting GABA(B) receptors in the mediodorsal thalamus blocked the effect of [D-Ala(2),N-Me-Phe(4),Gly-ol(5)]enkephalin in the ventral pallidum. gamma-Aminobutyric Acid 19-23 proenkephalin Rattus norvegicus 284-294 11295234-1 2001 In rat astrocytes, incubation with cholera toxin (CTX; 0.1 microg/ml) for 8 h increased proenkephalin (proENK) mRNA level (10-fold), which was further increased by dexamethasone (DEX; 1 microM) (2.2-fold as much as CTX alone). Dexamethasone 164-177 proenkephalin Rattus norvegicus 88-101 11295234-1 2001 In rat astrocytes, incubation with cholera toxin (CTX; 0.1 microg/ml) for 8 h increased proenkephalin (proENK) mRNA level (10-fold), which was further increased by dexamethasone (DEX; 1 microM) (2.2-fold as much as CTX alone). Dexamethasone 164-177 proenkephalin Rattus norvegicus 103-109 11295234-1 2001 In rat astrocytes, incubation with cholera toxin (CTX; 0.1 microg/ml) for 8 h increased proenkephalin (proENK) mRNA level (10-fold), which was further increased by dexamethasone (DEX; 1 microM) (2.2-fold as much as CTX alone). Dexamethasone 179-182 proenkephalin Rattus norvegicus 88-101 11295234-1 2001 In rat astrocytes, incubation with cholera toxin (CTX; 0.1 microg/ml) for 8 h increased proenkephalin (proENK) mRNA level (10-fold), which was further increased by dexamethasone (DEX; 1 microM) (2.2-fold as much as CTX alone). Dexamethasone 179-182 proenkephalin Rattus norvegicus 103-109 11295234-2 2001 Although pertussis toxin (PTX; 0.1 microg/ml) did not affect the basal proENK mRNA level, DEX significantly increased proENK mRNA level in PTX-treated cells (6-fold). Dexamethasone 90-93 proenkephalin Rattus norvegicus 118-124 11295234-3 2001 The inhibition of protein synthesis by cycloheximide (CHX; 15 microM) also increased proENK mRNA level in PTX-treated cells (5.2-fold), but not in CTX-stimulated cells. Cycloheximide 39-52 proenkephalin Rattus norvegicus 85-91 11295234-3 2001 The inhibition of protein synthesis by cycloheximide (CHX; 15 microM) also increased proENK mRNA level in PTX-treated cells (5.2-fold), but not in CTX-stimulated cells. Cycloheximide 54-57 proenkephalin Rattus norvegicus 85-91 11295234-9 2001 These results suggest that the elevation of phosphorylation of CREB rather than AP-1 level may be involved in CTX-induced and CHX-dependent-PTX-induced increase of proENK mRNA level. Cycloheximide 126-129 proenkephalin Rattus norvegicus 164-170 11257721-1 2001 BACKGROUND: In this report, we describe a new quantitative electron microscopic protocol based on the use of double colloidal-gold post-embedding immunostaining procedure as markers to analyze the subcellular distribution of enkephalin (ENK) and GABA neurotransmitters simultaneously in the same ultrathin tissue sections in the periaqueductal gray area (PAG) of the rat brain. gamma-Aminobutyric Acid 246-250 proenkephalin Rattus norvegicus 225-235 11257721-1 2001 BACKGROUND: In this report, we describe a new quantitative electron microscopic protocol based on the use of double colloidal-gold post-embedding immunostaining procedure as markers to analyze the subcellular distribution of enkephalin (ENK) and GABA neurotransmitters simultaneously in the same ultrathin tissue sections in the periaqueductal gray area (PAG) of the rat brain. gamma-Aminobutyric Acid 246-250 proenkephalin Rattus norvegicus 237-240 11160487-8 2001 Only LT-evoked field potentials were found to be reliably inhibited by the mu opioid receptor agonist [D-Ala(2), N-Me-Phe(4), Gly(5)] enkephalin-ol (DAMGO, 1 microM), although evoked potentials from both DR and LT were blocked by the AMPA/kainate glutamate receptor antagonist 6-cyano-7-nitroquinoxalene-2,3-dione. N-Methyl-L-phenylalanine 113-121 proenkephalin Rattus norvegicus 134-144 11160487-8 2001 Only LT-evoked field potentials were found to be reliably inhibited by the mu opioid receptor agonist [D-Ala(2), N-Me-Phe(4), Gly(5)] enkephalin-ol (DAMGO, 1 microM), although evoked potentials from both DR and LT were blocked by the AMPA/kainate glutamate receptor antagonist 6-cyano-7-nitroquinoxalene-2,3-dione. Glycine 126-129 proenkephalin Rattus norvegicus 134-144 11160487-8 2001 Only LT-evoked field potentials were found to be reliably inhibited by the mu opioid receptor agonist [D-Ala(2), N-Me-Phe(4), Gly(5)] enkephalin-ol (DAMGO, 1 microM), although evoked potentials from both DR and LT were blocked by the AMPA/kainate glutamate receptor antagonist 6-cyano-7-nitroquinoxalene-2,3-dione. 6-cyano-7-nitroquinoxalene-2,3-dione 277-313 proenkephalin Rattus norvegicus 134-144 11245849-3 2001 In rats with a crushed sciatic nerve, the delta(1)-opioid receptor agonist [D-Pen(2), D-Pen(5)]enkephalin (DPDPE, 5-25 microg i.t.) d-pen 86-91 proenkephalin Rattus norvegicus 95-105 11226390-1 2001 Spinorphin has been isolated from the bovine spinal cord as an endogenous inhibitor of enkephalin-degrading enzymes (aminopeptidase, dipeptidyl aminopeptidase III, angiotensin-converting enzyme and enkephalinase), and tynorphin has been synthesized as a more potent inhibitor of dipeptidyl aminopeptidase III. spinorphin 0-10 proenkephalin Rattus norvegicus 87-97 11226390-4 2001 Spinorphin (1 microM), which alone had no effect, potentiated the facilitatory effects of enkephalin on the filed potentials at a stimulation interval of 15 s. At a stimulation interval of 10--4 s, spinorphin alone frequency dependently inhibited the field potential. spinorphin 0-10 proenkephalin Rattus norvegicus 90-100 11226390-4 2001 Spinorphin (1 microM), which alone had no effect, potentiated the facilitatory effects of enkephalin on the filed potentials at a stimulation interval of 15 s. At a stimulation interval of 10--4 s, spinorphin alone frequency dependently inhibited the field potential. spinorphin 198-208 proenkephalin Rattus norvegicus 90-100 11226390-5 2001 On the other hand, tynorphin (1 microM), which alone had no effect at any stimulus interval, tended to potentiate the facilitatory effects of enkephalin. tynorphin 19-28 proenkephalin Rattus norvegicus 142-152 11226390-8 2001 On the other hand, tynorphin tends to potentiate the facilitatory effects of enkephalin without use-dependent inhibition. tynorphin 19-28 proenkephalin Rattus norvegicus 77-87 11471067-10 2001 In view of the protective actions of enkephalin peptides against oxidative stress, we can infer from our results an implication of Leu-enk in ischemia-reperfusion and thus eventually in preconditioning phenomenon. Leucine 131-134 proenkephalin Rattus norvegicus 37-47 11471067-10 2001 In view of the protective actions of enkephalin peptides against oxidative stress, we can infer from our results an implication of Leu-enk in ischemia-reperfusion and thus eventually in preconditioning phenomenon. Leucine 131-134 proenkephalin Rattus norvegicus 37-40 11294472-1 2001 Delta enkephalin analogue [D-Ala(2),D-Leu(5)]enkephalin (DADLE) has been shown to protect dopamine transporters from methamphetamine-induced neurotoxicity. Methamphetamine 117-132 proenkephalin Rattus norvegicus 6-16 11294472-1 2001 Delta enkephalin analogue [D-Ala(2),D-Leu(5)]enkephalin (DADLE) has been shown to protect dopamine transporters from methamphetamine-induced neurotoxicity. Methamphetamine 117-132 proenkephalin Rattus norvegicus 45-55 11173220-7 2001 Axon terminals containing enkephalin immunolabeling provided a major innervation to soma or dendrites containing GABA. gamma-Aminobutyric Acid 113-117 proenkephalin Rattus norvegicus 26-36 11173220-8 2001 That is, over one third (94/245) of the axon terminals in contact with GABA-immunoreactive dendrites contained enkephalin. gamma-Aminobutyric Acid 71-75 proenkephalin Rattus norvegicus 111-121 11173220-9 2001 Furthermore, these GABA-immunoreactive dendrites accounted for a fifth of the somatodendritic processes associated with enkephalin-containing axon terminals. gamma-Aminobutyric Acid 19-23 proenkephalin Rattus norvegicus 120-130 11152707-6 2001 Evoked glutamatergic excitatory postsynaptic currents (EPSCs) were inhibited to a much greater extent by [Tyr-D-Ala(2), N-CH(3)-Phe(4), Gly-ol-enkephalin] (DAMGO, approximately 35%) than by WIN 55,212-2 (<20%), and an analysis of miniature EPSCs suggested that the effects of DAMGO were presynaptic, whereas those of WIN 55,212-2 were postsynaptic. tyr-d-ala 106-115 proenkephalin Rattus norvegicus 143-153 11246155-0 2001 Unilateral dopamine depletion increases expression of the 2A subunit of the N-methyl-D-aspartate receptor in enkephalin-positive and enkephalin-negative neurons. Dopamine 11-19 proenkephalin Rattus norvegicus 109-119 11246155-0 2001 Unilateral dopamine depletion increases expression of the 2A subunit of the N-methyl-D-aspartate receptor in enkephalin-positive and enkephalin-negative neurons. Dopamine 11-19 proenkephalin Rattus norvegicus 133-143 11246155-9 2001 Cellular analysis of 2A subunit expression indicated that as a consequence of dopamine depletion there is a significant increase in the expression of this subunit in both enkephalin-positive and enkephalin-negative neurons. Dopamine 78-86 proenkephalin Rattus norvegicus 171-181 11246155-9 2001 Cellular analysis of 2A subunit expression indicated that as a consequence of dopamine depletion there is a significant increase in the expression of this subunit in both enkephalin-positive and enkephalin-negative neurons. Dopamine 78-86 proenkephalin Rattus norvegicus 195-205 11246155-10 2001 From this study we conclude that dopamine depletion increases messenger RNA expression of the 2A subunit of the N-methyl-D-aspartate receptor in striatopallidal and presumed striatonigral (enkephalin-negative) neurons. Dopamine 33-41 proenkephalin Rattus norvegicus 189-199 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Dexamethasone 15-18 proenkephalin Rattus norvegicus 285-291 11734363-8 2001 Enkephalin-positive terminals synapsing on bulbospinal barosensitive neurons contained one or more amino acid: GABA+glycine, glutamate alone or GABA+glutamate. gamma-Aminobutyric Acid 111-115 proenkephalin Rattus norvegicus 0-10 11734363-8 2001 Enkephalin-positive terminals synapsing on bulbospinal barosensitive neurons contained one or more amino acid: GABA+glycine, glutamate alone or GABA+glutamate. Glycine 116-123 proenkephalin Rattus norvegicus 0-10 11734363-8 2001 Enkephalin-positive terminals synapsing on bulbospinal barosensitive neurons contained one or more amino acid: GABA+glycine, glutamate alone or GABA+glutamate. Glutamic Acid 125-134 proenkephalin Rattus norvegicus 0-10 11734363-8 2001 Enkephalin-positive terminals synapsing on bulbospinal barosensitive neurons contained one or more amino acid: GABA+glycine, glutamate alone or GABA+glutamate. gamma-Aminobutyric Acid 144-148 proenkephalin Rattus norvegicus 0-10 11734363-8 2001 Enkephalin-positive terminals synapsing on bulbospinal barosensitive neurons contained one or more amino acid: GABA+glycine, glutamate alone or GABA+glutamate. Glutamic Acid 149-158 proenkephalin Rattus norvegicus 0-10 11734363-9 2001 Enkephalin-immunoreactive terminals located near biotinamide-labelled cells contained a similar variety of amino acids. biotinamide 49-60 proenkephalin Rattus norvegicus 0-10 11734363-11 2001 Enkephalin is present in both excitatory (glutamate-immunoreactive) and inhibitory (GABA- and/or glycine-immunoreactive) terminals. Glutamic Acid 42-51 proenkephalin Rattus norvegicus 0-10 11734363-11 2001 Enkephalin is present in both excitatory (glutamate-immunoreactive) and inhibitory (GABA- and/or glycine-immunoreactive) terminals. gamma-Aminobutyric Acid 84-88 proenkephalin Rattus norvegicus 0-10 11734363-11 2001 Enkephalin is present in both excitatory (glutamate-immunoreactive) and inhibitory (GABA- and/or glycine-immunoreactive) terminals. Glycine 97-104 proenkephalin Rattus norvegicus 0-10 12040419-4 2001 Meanwhile, L-NNA(1 and 10 &mgr;mol/L) also significantly inhibited the immunoreactive methionine enkephalin (ir-M-ENK) level. Nitroarginine 11-16 proenkephalin Rattus norvegicus 101-111 12040419-4 2001 Meanwhile, L-NNA(1 and 10 &mgr;mol/L) also significantly inhibited the immunoreactive methionine enkephalin (ir-M-ENK) level. Nitroarginine 11-16 proenkephalin Rattus norvegicus 118-121 12040419-4 2001 Meanwhile, L-NNA(1 and 10 &mgr;mol/L) also significantly inhibited the immunoreactive methionine enkephalin (ir-M-ENK) level. Adenosine Monophosphate 27-30 proenkephalin Rattus norvegicus 101-111 12040419-4 2001 Meanwhile, L-NNA(1 and 10 &mgr;mol/L) also significantly inhibited the immunoreactive methionine enkephalin (ir-M-ENK) level. Adenosine Monophosphate 27-30 proenkephalin Rattus norvegicus 118-121 12040419-6 2001 Finally, beta-FNA (100 &mgr;mol/L, an M-ENK receptor inhibitor) facilitated the inhibitive effect of L-NNA on the Glu level, while nor-BIN (100 &mgr;mol/L, a DYN receptor inhibitor) suppressed that effect. beta-funaltrexamine 9-17 proenkephalin Rattus norvegicus 44-47 12040419-6 2001 Finally, beta-FNA (100 &mgr;mol/L, an M-ENK receptor inhibitor) facilitated the inhibitive effect of L-NNA on the Glu level, while nor-BIN (100 &mgr;mol/L, a DYN receptor inhibitor) suppressed that effect. Nitroarginine 105-110 proenkephalin Rattus norvegicus 44-47 12040419-7 2001 In conclusion,L-NNA could inhibit NO production induced by PG (4 000 IU/ml) stimulation, thuslowering the M-ENK level and increasing the DYN-B level, and resulted in a down-regulation of the Glu level and the neuron excitation. Nitroarginine 14-19 proenkephalin Rattus norvegicus 108-111 12040419-7 2001 In conclusion,L-NNA could inhibit NO production induced by PG (4 000 IU/ml) stimulation, thuslowering the M-ENK level and increasing the DYN-B level, and resulted in a down-regulation of the Glu level and the neuron excitation. Penicillin G 59-61 proenkephalin Rattus norvegicus 108-111 11113530-0 2000 The differential molecular mechanisms underlying proenkephalin mRNA expression induced by forskolin and phorbol-12-myristic-13-acetate in primary cultured astrocytes. Colforsin 90-99 proenkephalin Rattus norvegicus 49-62 11113530-0 2000 The differential molecular mechanisms underlying proenkephalin mRNA expression induced by forskolin and phorbol-12-myristic-13-acetate in primary cultured astrocytes. phorbol-12-myristic-13-acetate 104-134 proenkephalin Rattus norvegicus 49-62 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Colforsin 19-28 proenkephalin Rattus norvegicus 111-124 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Colforsin 19-28 proenkephalin Rattus norvegicus 126-132 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Colforsin 30-33 proenkephalin Rattus norvegicus 111-124 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Colforsin 30-33 proenkephalin Rattus norvegicus 126-132 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. phorbol-12-myristic-13-acetate 49-79 proenkephalin Rattus norvegicus 111-124 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Colforsin 47-50 proenkephalin Rattus norvegicus 67-73 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. phorbol-12-myristic-13-acetate 49-79 proenkephalin Rattus norvegicus 126-132 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Tetradecanoylphorbol Acetate 81-84 proenkephalin Rattus norvegicus 111-124 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Colforsin 47-50 proenkephalin Rattus norvegicus 285-291 11113530-1 2000 In rat astrocytes, forskolin (FSK; 5 microM) and phorbol-12-myristic-13-acetate (PMA; 2.5 microM) increase the proenkephalin (proENK) mRNA level via different pathways. Tetradecanoylphorbol Acetate 81-84 proenkephalin Rattus norvegicus 126-132 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Tetradecanoylphorbol Acetate 55-58 proenkephalin Rattus norvegicus 67-73 11113530-2 2000 FSK-induced proENK mRNA expression is independent of protein de novo synthesis, and well correlated with CREB phosphorylation. Colforsin 0-3 proenkephalin Rattus norvegicus 12-18 11113530-3 2000 This is in contrast to PMA-induced proENK mRNA expression that is dependent on protein de novo synthesis and is well correlated with the increase of AP-1 DNA binding activity rather than CREB phosphorylation. Tetradecanoylphorbol Acetate 23-26 proenkephalin Rattus norvegicus 35-41 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Tetradecanoylphorbol Acetate 55-58 proenkephalin Rattus norvegicus 285-291 11113530-6 2000 The combined treatment with FSK and PMA additively increased the proENK mRNA level, which was correlated with AP-1 or ENKCRE-2 DNA binding activity, and CREB phosphorylation. Colforsin 28-31 proenkephalin Rattus norvegicus 65-71 11123706-2 2000 Mesenteric afferent discharge was recorded electrophysiologically in response to cumulative doses (1-400 microgram kg-1) of the mu-receptor agonist [D-ala,2 N- me-Phe4, Gly5-ol]-enkephalin (DAMGO), the delta-receptor agonist [D-ala,2 D-leu5]-enkephalin (DADLE) and the kappa-receptor agonist U-50488. 2 n- me-phe4 155-167 proenkephalin Rattus norvegicus 178-188 11113530-6 2000 The combined treatment with FSK and PMA additively increased the proENK mRNA level, which was correlated with AP-1 or ENKCRE-2 DNA binding activity, and CREB phosphorylation. Tetradecanoylphorbol Acetate 36-39 proenkephalin Rattus norvegicus 65-71 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Dexamethasone 0-13 proenkephalin Rattus norvegicus 67-73 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Dexamethasone 0-13 proenkephalin Rattus norvegicus 285-291 11113530-7 2000 Dexamethasone (DEX; 1 microM) further enhanced FSK- or PMA-induced proENK mRNA expression, which was not correlated with the activation of AP-1 expression and CREB phosphorylation, suggesting that synergistic interaction of glucocorticoid with PKA or PKC pathway for the regulation of proENK mRNA expression appears to be mediated by other pathways rather than CREB and AP-1 families. Dexamethasone 15-18 proenkephalin Rattus norvegicus 67-73 11102471-4 2000 Light level densitometry and ultrastructural analysis showed that there was a significant decrease in immunolabeling for ENK in LC-afferent terminals of morphine-treated rats. Morphine 153-161 proenkephalin Rattus norvegicus 121-124 11102471-5 2000 Western immunoblot analysis confirmed that protein levels for both leucine(5)- and methionine(5)-ENK were significantly decreased in tissue samples containing the LC after chronic morphine treatment. Methionine 83-93 proenkephalin Rattus norvegicus 97-100 11102471-5 2000 Western immunoblot analysis confirmed that protein levels for both leucine(5)- and methionine(5)-ENK were significantly decreased in tissue samples containing the LC after chronic morphine treatment. Morphine 180-188 proenkephalin Rattus norvegicus 97-100 10871700-0 2000 Acute ethanol administration induces changes in TRH and proenkephalin expression in hypothalamic and limbic regions of rat brain. Ethanol 6-13 proenkephalin Rattus norvegicus 56-69 11072100-2 2000 Levels of mRNAs of the monoamine transporters, i.e. the primary molecular targets of cocaine, and the striatal neuropeptides substance P and enkephalin, which predominantly exist in different populations of dopaminoceptive striatal neurons, were quantified in rats which had reached different stages of acquisition of cocaine SA. cocaine sa 318-328 proenkephalin Rattus norvegicus 141-151 11163124-0 2000 Repeated ethanol administration induces short- and long-term changes in enkephalin and dynorphin tissue concentrations in rat brain. Ethanol 9-16 proenkephalin Rattus norvegicus 72-82 10871700-12 2000 These results give support for TRH and enkephalin neurons as targets of ethanol and, as possible mediators of some of its observed behavioral effects. Ethanol 72-79 proenkephalin Rattus norvegicus 39-49 11020761-7 2000 RESULTS: delta-Receptor activation by d-Ala2-d-Leu5-enkephalin (DADLE) reduced the amplitudes of EPSCs by maximum 60% in a naltrindole-reversible manner (EC50: 6-15 nm). naltrindole 123-134 proenkephalin Rattus norvegicus 52-62 11501038-7 2000 (3) In the denervated striatum of 6-OHDA-lesioned rats, the PENK mRNA level was extremely increased vs that in the intact striatum. Oxidopamine 34-40 proenkephalin Rattus norvegicus 60-64 11501038-11 2000 CONCLUSION: In the 6-OHDA-lesioned rats, the rotation induced by SPD was kept on a high activity, which was in pace with the inducement of Fos expression and the reduction of expression of PENK mRNA in the denervated striatum. Oxidopamine 19-25 proenkephalin Rattus norvegicus 189-193 11501038-1 2000 AIM: To study that l-stepholidine (SPD) regulates the expression of proenkephalin (PENK) and prodynorphin (PDYN) mRNA and Fos in the striatum after rotational test in the 6-hydroxydopamine (6-OHDA)-lesioned rats. stepholidine 19-33 proenkephalin Rattus norvegicus 68-81 11501038-1 2000 AIM: To study that l-stepholidine (SPD) regulates the expression of proenkephalin (PENK) and prodynorphin (PDYN) mRNA and Fos in the striatum after rotational test in the 6-hydroxydopamine (6-OHDA)-lesioned rats. stepholidine 19-33 proenkephalin Rattus norvegicus 83-87 11501038-1 2000 AIM: To study that l-stepholidine (SPD) regulates the expression of proenkephalin (PENK) and prodynorphin (PDYN) mRNA and Fos in the striatum after rotational test in the 6-hydroxydopamine (6-OHDA)-lesioned rats. stepholidine 35-38 proenkephalin Rattus norvegicus 68-81 11501038-1 2000 AIM: To study that l-stepholidine (SPD) regulates the expression of proenkephalin (PENK) and prodynorphin (PDYN) mRNA and Fos in the striatum after rotational test in the 6-hydroxydopamine (6-OHDA)-lesioned rats. stepholidine 35-38 proenkephalin Rattus norvegicus 83-87 10999935-6 2000 SC17599 stimulated the binding of [(35)S]GTPgammaS in a naloxone-reversible manner with good potency and maximal effect equivalent to that of the mu-opioid agonists fentanyl and [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-enkephalin. SC 17599 0-7 proenkephalin Rattus norvegicus 211-221 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Isoproterenol 42-55 proenkephalin Rattus norvegicus 67-80 11033344-5 2000 Naloxone and opioid agents, such as morphine, beta-endorphin and [Met(5)]-enkephalin, significantly enhanced and attenuated the stress-induced increase in noradrenaline release in these regions and the stress-induced emotional change, respectively. Naloxone 0-8 proenkephalin Rattus norvegicus 74-84 11033344-5 2000 Naloxone and opioid agents, such as morphine, beta-endorphin and [Met(5)]-enkephalin, significantly enhanced and attenuated the stress-induced increase in noradrenaline release in these regions and the stress-induced emotional change, respectively. Norepinephrine 155-168 proenkephalin Rattus norvegicus 74-84 10996023-10 2000 The immunopotentiation of the PFC response induced by Met-Enk was reversed by OP(1) receptor antagonists, naltrindole and ICI 174864, but not by beta-FNA or nor-BNI. naltrindole 106-117 proenkephalin Rattus norvegicus 58-61 11074353-4 2000 Both the ER and PR protein concentrations and the [3H]Estradiol binding to the high affinity nuclear receptors decreased after ENK treatment during the first two days. Tritium 51-53 proenkephalin Rattus norvegicus 127-130 10900225-3 2000 Exposure of DRG neurons to the mu-agonist [D-Ala(2),N-MePhe(4), Gly-ol(5)]-enkephalin (DAMGO; 3 microM) reduced whole-cell currents approximately 35%, but with continued agonist application, 52% of the response was lost over 10 to 12 min. n-mephe 52-59 proenkephalin Rattus norvegicus 75-85 10900225-3 2000 Exposure of DRG neurons to the mu-agonist [D-Ala(2),N-MePhe(4), Gly-ol(5)]-enkephalin (DAMGO; 3 microM) reduced whole-cell currents approximately 35%, but with continued agonist application, 52% of the response was lost over 10 to 12 min. gly-ol 64-70 proenkephalin Rattus norvegicus 75-85 10924927-0 2000 Analgesic doses of the enkephalin degrading enzyme inhibitor RB 120 do not have discriminative stimulus properties. RB 120 61-67 proenkephalin Rattus norvegicus 23-33 10924927-1 2000 The systemically active mixed inhibitor of enkephalin metabolism, N-((S)-2-benzyl-3[(S) 2-amino-4-methylthio)butyldithio-]-1-oxopropyl)-L-alanine benzylester (RB 120), alone or in combination with 4-?[2-[[3-(1H-indol-3-yl))-2-methyl-1-oxo-2-[[(tricyclo[3.3.1.1. RB 120 159-165 proenkephalin Rattus norvegicus 43-53 10924927-1 2000 The systemically active mixed inhibitor of enkephalin metabolism, N-((S)-2-benzyl-3[(S) 2-amino-4-methylthio)butyldithio-]-1-oxopropyl)-L-alanine benzylester (RB 120), alone or in combination with 4-?[2-[[3-(1H-indol-3-yl))-2-methyl-1-oxo-2-[[(tricyclo[3.3.1.1. 4-?[2-[[3-(1h-indol-3-yl))-2-methyl-1-oxo-2-[[(tricyclo[ 197-253 proenkephalin Rattus norvegicus 43-53 10923996-0 2000 Ethanol uses cAMP-independent signal transduction mechanisms to activate proenkephalin promoter activity in rat C6 glioma cells. Ethanol 0-7 proenkephalin Rattus norvegicus 73-86 10923996-0 2000 Ethanol uses cAMP-independent signal transduction mechanisms to activate proenkephalin promoter activity in rat C6 glioma cells. Cyclic AMP 13-17 proenkephalin Rattus norvegicus 73-86 10923996-1 2000 BACKGROUND: Previous in vivo studies show that acute ethanol exposure sequentially increases protein kinase A (PKA) activity, the phosphorylation of the adenosine 3":5"-cyclic monophosphate (cAMP)-dependent transcription factor, CREB, and finally proenkephalin gene expression. Ethanol 53-60 proenkephalin Rattus norvegicus 247-260 10923996-1 2000 BACKGROUND: Previous in vivo studies show that acute ethanol exposure sequentially increases protein kinase A (PKA) activity, the phosphorylation of the adenosine 3":5"-cyclic monophosphate (cAMP)-dependent transcription factor, CREB, and finally proenkephalin gene expression. Cyclic AMP 191-195 proenkephalin Rattus norvegicus 247-260 10923996-2 2000 The present study was conducted to determine if ethanol could activate directly the adenylyl cyclase pathway and thus enhance proenkephalin promoter activity. Ethanol 48-55 proenkephalin Rattus norvegicus 126-139 10923996-3 2000 METHODS: Cultured rat C6 glioma cells stably transfected with a segment of the five prime flanking region of rat proenkephalin promoter (nucleotide -2700+/-53) ligated to the chloramphenicol acetyltransferase (CAT) reporter gene were employed to study the effects of ethanol on proenkephalin promoter activity. Ethanol 267-274 proenkephalin Rattus norvegicus 113-126 10923996-4 2000 This region of proenkephalin promoter contains two cAMP response elements (CRE-1 and CRE-2) and one AP2 site located in the region upstream of the TATA box. Cyclic AMP 51-55 proenkephalin Rattus norvegicus 15-28 10923996-6 2000 RESULTS: Ethanol and isoproterenol increased proenkephalin promoter activity in a dose-dependent manner. Ethanol 9-16 proenkephalin Rattus norvegicus 45-58 10923996-6 2000 RESULTS: Ethanol and isoproterenol increased proenkephalin promoter activity in a dose-dependent manner. Isoproterenol 21-34 proenkephalin Rattus norvegicus 45-58 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Isoproterenol 42-55 proenkephalin Rattus norvegicus 193-206 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Ethanol 0-7 proenkephalin Rattus norvegicus 67-80 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Ethanol 0-7 proenkephalin Rattus norvegicus 193-206 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Ethanol 121-128 proenkephalin Rattus norvegicus 67-80 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Ethanol 121-128 proenkephalin Rattus norvegicus 193-206 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Cyclic AMP 136-140 proenkephalin Rattus norvegicus 67-80 10923996-7 2000 Ethanol had an additive effect on maximal isoproterenol-stimulated proenkephalin promoter activity, which suggested that ethanol used a cAMP-independent signal transduction pathway to increase proenkephalin promoter activation. Cyclic AMP 136-140 proenkephalin Rattus norvegicus 193-206 10923996-12 2000 CONCLUSIONS: Ethanol enhanced proenkephalin promoter activity and potentiated isoproterenol-stimulated promoter activity through a cAMP-independent pathway. Ethanol 13-20 proenkephalin Rattus norvegicus 30-43 10814777-1 2000 Pro-opiomelanocortin (POMC) and proenkephalin A (PEA) antisense oligodeoxynucleotides respectively reduced and enhanced proliferation of rat splenocytes incubated with concanavalin A in vitro. Oligodeoxyribonucleotides 64-85 proenkephalin Rattus norvegicus 32-47 10854288-0 2000 Assessment of stereoselectivity of trimethylphenylalanine analogues of delta-opioid [D-Pen(2),D-Pen(5)]-enkephalin. trimethylphenylalanine 35-57 proenkephalin Rattus norvegicus 104-114 10854288-0 2000 Assessment of stereoselectivity of trimethylphenylalanine analogues of delta-opioid [D-Pen(2),D-Pen(5)]-enkephalin. delta-opioid [d-pen 71-90 proenkephalin Rattus norvegicus 104-114 10854288-0 2000 Assessment of stereoselectivity of trimethylphenylalanine analogues of delta-opioid [D-Pen(2),D-Pen(5)]-enkephalin. d-pen( 85-91 proenkephalin Rattus norvegicus 104-114 10848572-5 2000 Naloxone applied at iontophoretic current that blocked the inhibitory effect of [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin, reduced the peak inhibitory effect of endomorphins on the NMDA- and natural stimulus-evoked responses. Naloxone 0-8 proenkephalin Rattus norvegicus 115-125 10848572-5 2000 Naloxone applied at iontophoretic current that blocked the inhibitory effect of [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin, reduced the peak inhibitory effect of endomorphins on the NMDA- and natural stimulus-evoked responses. N-Methyl-L-phenylalanine 91-99 proenkephalin Rattus norvegicus 115-125 10848572-5 2000 Naloxone applied at iontophoretic current that blocked the inhibitory effect of [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin, reduced the peak inhibitory effect of endomorphins on the NMDA- and natural stimulus-evoked responses. gly(5)-ol 104-113 proenkephalin Rattus norvegicus 115-125 10841376-5 2000 The increased L-ENK was returned to normoxic level when hypoxia (10.8% O2) exposure lasted for 24 h. After ADX, 10.8% O2 hypoxia induced a sharp decline of L-ENK in the ME, but this decline was completely reversed by treatment with DEX (500 microg/rat, i.p.). Oxygen 71-73 proenkephalin Rattus norvegicus 16-19 10878500-5 2000 Furthermore, we have previously shown that chronic DOCA administration results in an increase in mRNA levels of the endogenous opiate enkephalin in male rats given 24-hour access to tap water and 2% NaCl (two-bottle choice). Desoxycorticosterone Acetate 51-55 proenkephalin Rattus norvegicus 134-144 10878500-5 2000 Furthermore, we have previously shown that chronic DOCA administration results in an increase in mRNA levels of the endogenous opiate enkephalin in male rats given 24-hour access to tap water and 2% NaCl (two-bottle choice). Water 186-191 proenkephalin Rattus norvegicus 134-144 10878500-5 2000 Furthermore, we have previously shown that chronic DOCA administration results in an increase in mRNA levels of the endogenous opiate enkephalin in male rats given 24-hour access to tap water and 2% NaCl (two-bottle choice). Sodium Chloride 199-203 proenkephalin Rattus norvegicus 134-144 10878500-10 2000 Consistent with our hypothesis, in the shell of the nucleus accumbens (AcbSh) we found relatively higher enkephalin- and tachykinin-mRNA abundance in the 2h vs. 2hX and dynorphin-mRNA in the 24h vs. 24hX groups. Deuterium 154-156 proenkephalin Rattus norvegicus 105-115 10878500-10 2000 Consistent with our hypothesis, in the shell of the nucleus accumbens (AcbSh) we found relatively higher enkephalin- and tachykinin-mRNA abundance in the 2h vs. 2hX and dynorphin-mRNA in the 24h vs. 24hX groups. 24hx 199-203 proenkephalin Rattus norvegicus 105-115 10841376-5 2000 The increased L-ENK was returned to normoxic level when hypoxia (10.8% O2) exposure lasted for 24 h. After ADX, 10.8% O2 hypoxia induced a sharp decline of L-ENK in the ME, but this decline was completely reversed by treatment with DEX (500 microg/rat, i.p.). Oxygen 118-120 proenkephalin Rattus norvegicus 16-19 10841376-5 2000 The increased L-ENK was returned to normoxic level when hypoxia (10.8% O2) exposure lasted for 24 h. After ADX, 10.8% O2 hypoxia induced a sharp decline of L-ENK in the ME, but this decline was completely reversed by treatment with DEX (500 microg/rat, i.p.). Oxygen 118-120 proenkephalin Rattus norvegicus 158-161 10841376-5 2000 The increased L-ENK was returned to normoxic level when hypoxia (10.8% O2) exposure lasted for 24 h. After ADX, 10.8% O2 hypoxia induced a sharp decline of L-ENK in the ME, but this decline was completely reversed by treatment with DEX (500 microg/rat, i.p.). Dexamethasone 232-235 proenkephalin Rattus norvegicus 16-19 10751579-0 2000 Acute ethanol induction of c-Fos immunoreactivity in pre-pro-enkephalin expressing neurons of the central nucleus of the amygdala. Ethanol 6-13 proenkephalin Rattus norvegicus 57-71 10760491-7 2000 The selective delta agonist, [D-Pen(2,5)]-enkephalin (100, 500 microM), reversed the effect of naltrindole, confirming that delta receptors mediated this effect. naltrindole 95-106 proenkephalin Rattus norvegicus 42-52 10822066-5 2000 The centrally injected naltrindole (0.5 nmol/rat) antagonised also the gastroprotective effect of clonidine --but not that of the delta-agonist [D-Ala(2), D-Leu(5)]enkephalin--administered peripherally. naltrindole 23-34 proenkephalin Rattus norvegicus 164-174 10751579-16 2000 In the present study, we report that ethanol-induced c-Fos immunoreactivity was mainly confined to neurons that express pro-enkephalin (ENK). Ethanol 37-44 proenkephalin Rattus norvegicus 120-134 10790856-2 2000 Recently, the delta enkephalin analogue [D-Ala(2),D-Leu(5)]-enkephalin (DADLE) has been demonstrated to protect against, as well as to reverse methamphetamine-induced loss of dopamine transporters. Methamphetamine 143-158 proenkephalin Rattus norvegicus 20-30 10790856-2 2000 Recently, the delta enkephalin analogue [D-Ala(2),D-Leu(5)]-enkephalin (DADLE) has been demonstrated to protect against, as well as to reverse methamphetamine-induced loss of dopamine transporters. Dopamine 175-183 proenkephalin Rattus norvegicus 20-30 10751579-16 2000 In the present study, we report that ethanol-induced c-Fos immunoreactivity was mainly confined to neurons that express pro-enkephalin (ENK). Ethanol 37-44 proenkephalin Rattus norvegicus 136-139 10751579-18 2000 Our results thus provide anatomical evidence indicating that within the amygdala, GABAergic neurons that contain ENK are responsive to acute ethanol exposure. Ethanol 141-148 proenkephalin Rattus norvegicus 113-116 10715562-7 2000 The result indicates that chronic AAS treatment increased the activity in the dynorphin B- and Met-enkephalin-Arg(6)Phe(7)-ir in the hypothalamus, striatum and periaqueductal gray (PAG) compared to controls. Arginine 110-113 proenkephalin Rattus norvegicus 99-109 10715562-7 2000 The result indicates that chronic AAS treatment increased the activity in the dynorphin B- and Met-enkephalin-Arg(6)Phe(7)-ir in the hypothalamus, striatum and periaqueductal gray (PAG) compared to controls. Phenylalanine 116-119 proenkephalin Rattus norvegicus 99-109 10727732-0 2000 Prenatal Delta(9)-tetrahydrocannabinol exposure modifies proenkephalin gene expression in the fetal rat brain: sex-dependent differences. Dronabinol 9-38 proenkephalin Rattus norvegicus 57-70 10727732-1 2000 Perinatal Delta(9)-tetrahydrocannabinol (Delta(9)-THC) exposure in rats resulted in enhanced morphine self-administration behavior, naloxone-precipitated withdrawal signs or changes in pain sensitivity, which have been related to changes in micro-opioid receptor binding and/or proenkephalin mRNA levels in several brain regions. Dronabinol 10-39 proenkephalin Rattus norvegicus 278-291 10727732-1 2000 Perinatal Delta(9)-tetrahydrocannabinol (Delta(9)-THC) exposure in rats resulted in enhanced morphine self-administration behavior, naloxone-precipitated withdrawal signs or changes in pain sensitivity, which have been related to changes in micro-opioid receptor binding and/or proenkephalin mRNA levels in several brain regions. Dronabinol 41-53 proenkephalin Rattus norvegicus 278-291 10727732-5 2000 Prenatal Delta(9)-THC exposure altered proenkephalin mRNA levels in most of the brain areas studied at different fetal ages, but the effects were different between sexes. Dronabinol 9-21 proenkephalin Rattus norvegicus 39-52 10727732-6 2000 Thus, proenkephalin mRNA levels increased in females, but decreased in males that had been prenatally exposed to Delta(9)-THC. Dronabinol 113-125 proenkephalin Rattus norvegicus 6-19 10727732-9 2000 In summary, prenatal Delta(9)-THC exposure produced a sex-dependent effect in proenkephalin mRNA levels in several brain structures of rat fetuses. Dronabinol 30-33 proenkephalin Rattus norvegicus 78-91 10694468-2 2000 The rabbit brain endooligopeptidase A and the rat testes soluble metallopeptidase (EC 3.4.24.15) are thiol-activated oligopeptidases which are able to generate enkephalin from a number of opioid peptides and to inactivate bradykinin and neurotensin by hydrolyzing the same peptide bonds. Sulfhydryl Compounds 101-106 proenkephalin Rattus norvegicus 160-170 27414134-7 2000 Furthermore, the levels of dynorphin B and met-enkephalin are significantly increased in dopamine opiate-rich brain areas (caudate nucleus, substantia nigra, nucleus accumbens and globus pallidus) during ID. Dopamine 89-97 proenkephalin Rattus norvegicus 47-57 10737419-0 2000 Receptor binding and G-protein activation by new Met5-enkephalin-Arg6-Phe7 derived peptides. Peptides 83-91 proenkephalin Rattus norvegicus 54-64 10737419-1 2000 Met5-enkephalin-Arg6-Phe7 (Tyr-Gly-Gly-Phe-Met-Arg-Phe, MERF) is a naturally occurring heptapeptide that binds to opioid and non-opioid recognition sites in the central nervous system. Enkephalin-met, arg(6)- 27-50 proenkephalin Rattus norvegicus 5-15 10737419-1 2000 Met5-enkephalin-Arg6-Phe7 (Tyr-Gly-Gly-Phe-Met-Arg-Phe, MERF) is a naturally occurring heptapeptide that binds to opioid and non-opioid recognition sites in the central nervous system. Phenylalanine 21-24 proenkephalin Rattus norvegicus 5-15 10902893-0 2000 Effect of melatonin on the regulation of proenkephalin and prodynorphin mRNA levels induced by kainic acid in the rat hippocampus. Melatonin 10-19 proenkephalin Rattus norvegicus 41-54 10902893-0 2000 Effect of melatonin on the regulation of proenkephalin and prodynorphin mRNA levels induced by kainic acid in the rat hippocampus. Kainic Acid 95-106 proenkephalin Rattus norvegicus 41-54 10902893-1 2000 The in vivo short-term effect of melatonin on kainic acid (KA)-induced proenkephalin (proENK) or prodynorphin (proDYN) mRNA, and on AP-1 protein levels in the rat hippocampus, were studied. Kainic Acid 46-57 proenkephalin Rattus norvegicus 71-84 10965231-5 2000 Met-Enk-induced immunopotentiation was antagonized by anti-Met-Enk antibodies (anti-Met-Enk-Ig) and quaternary naltrexone (qNtx). Naltrexone 111-121 proenkephalin Rattus norvegicus 4-7 10965231-5 2000 Met-Enk-induced immunopotentiation was antagonized by anti-Met-Enk antibodies (anti-Met-Enk-Ig) and quaternary naltrexone (qNtx). qntx 123-127 proenkephalin Rattus norvegicus 4-7 10887947-5 2000 Local administration of an enkephalin analog or peptidase inhibitors into the cPAG suppresses morphine withdrawal signs. cpag 78-82 proenkephalin Rattus norvegicus 27-37 10887947-5 2000 Local administration of an enkephalin analog or peptidase inhibitors into the cPAG suppresses morphine withdrawal signs. Morphine 94-102 proenkephalin Rattus norvegicus 27-37 10688972-2 2000 The mu-opioid agonist DAMGO ([D-Ala(2), N-Me-Phe(4), Gly(5)-ol]enkephalin) significantly stimulated beta-endorphin and alpha-melanocyte-stimulating hormone release relative to controls early (30 min) in the incubation period. N-Methyl-L-phenylalanine 40-48 proenkephalin Rattus norvegicus 63-73 10688972-4 2000 The delta-opioid receptor agonist DPDPE ([D-Pen(2,5)]enkephalin) weakly inhibited beta-endorphin secretion relative to controls while the kappa-opioid receptor agonist U50488 had no effect. d-pen(2,5) 42-52 proenkephalin Rattus norvegicus 53-63 10660891-2 2000 However, numerous ENK-labeled terminals lacked GABA and exhibited synaptic specializations that were characteristic of excitatory-type transmitters. gamma-Aminobutyric Acid 47-51 proenkephalin Rattus norvegicus 18-21 10660891-4 2000 Indeed, 28% of the ENK-labeled axon terminals examined (n = 250 axon terminals) also contained glutamate. Glutamic Acid 95-104 proenkephalin Rattus norvegicus 19-22 10633493-0 2000 Overexpression of proenkephalin in the amygdala potentiates the anxiolytic effects of benzodiazepines. Benzodiazepines 86-101 proenkephalin Rattus norvegicus 18-31 27416159-8 2000 Serum glucose was tightly correlated with Enk-LI reaching highest values in the MF (r= -0.82). Glucose 6-13 proenkephalin Rattus norvegicus 42-45 10625117-0 1999 Effect of imipramine on enkephalin-degrading peptidases. Imipramine 10-20 proenkephalin Rattus norvegicus 24-34 10588934-9 1999 As previously reported for nociceptin, Phe(1)psi-nociceptin(1 - 13) caused an outward current in LC neurons voltage clamped at -60 mV (pD(2) of 7.1, maximum current 50% of that of methionine enkephalin, 10 microM). Phenylalanine 39-42 proenkephalin Rattus norvegicus 191-201 10601463-6 1999 The mu-opioid agonist [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-Enkephalin (DAMGO) hyperpolarized 7 of 19 tested neurons with a conductance increase. N-Methyl-L-phenylalanine 33-41 proenkephalin Rattus norvegicus 57-67 10602337-8 1999 In spontaneously withdrawn LC neurons from morphine-dependent rats, met-enkephalin (pD2 7.1, maximum inhibition 49%) and morphine (pD2 6.5, maximum inhibition 33%), inhibited IBa in all cells. Morphine 43-51 proenkephalin Rattus norvegicus 72-82 10602337-14 1999 This study demonstrates that in morphine-dependent rats, morphine and met-enkephalin modulation of somatic IBa in LC neurons displays modest tolerance compared with untreated rats. Morphine 32-40 proenkephalin Rattus norvegicus 74-84 10625117-2 1999 In this work, we have measured the effect of imipramine on enkephalin-degrading peptidases in several rat brain areas. Imipramine 45-55 proenkephalin Rattus norvegicus 59-69 10625117-7 1999 These results suggest to us that enkephalin-degrading peptidases are involved in the acute and chronic action mechanism of imipramine and reinforce the idea that the central enkephalinergic activity is dynamically changed during the treatment of depressive illness. Imipramine 123-133 proenkephalin Rattus norvegicus 33-43 10553648-1 1999 To understand the effect of the replacement of Tyr residue at position 1 in opioid peptides by 2,6-dimethyl-Tyr (Dmt) on the biological property, chiral (D or L) Dmt1 analogs of Leu-enkephalin (Enk) and Tyr-D-Arg-Phe-beta Ala-NH2 (YRFB) were synthesized and their enzymatic stabilities, in vitro bioactivities and receptor binding affinities compared with those of parent peptides. dmt 113-116 proenkephalin Rattus norvegicus 178-192 10559380-5 1999 The opioid receptor agonist D-Ala(2)-N-Me-Phe(4),Gly-ol(5)-enkephalin (DAMGO; 1 microM) dramatically increased the amplitude of spontaneous intracellular Ca(2+) oscillations in the hippocampal neurons, with synchronization of the Ca(2+) oscillations across neurons in a given field. d-ala(2)-n-me-phe 28-45 proenkephalin Rattus norvegicus 59-69 10559380-5 1999 The opioid receptor agonist D-Ala(2)-N-Me-Phe(4),Gly-ol(5)-enkephalin (DAMGO; 1 microM) dramatically increased the amplitude of spontaneous intracellular Ca(2+) oscillations in the hippocampal neurons, with synchronization of the Ca(2+) oscillations across neurons in a given field. gly-ol 49-55 proenkephalin Rattus norvegicus 59-69 10554657-3 1999 In the present work, the effect of acute lithium administration on soluble and membrane-bound enkephalin-degrading tyrosine-aminopeptidase activities in discrete brain areas and the pituitary gland is described. Lithium 41-48 proenkephalin Rattus norvegicus 94-104 10558900-1 1999 Opioid binding properties of Tyr-D-Ser-Gly-Phe-Leu-Thr-NH-NH-Gly-Mal (DSLET-Mal), a novel enkephalin-framed affinity label, was determined in rat brain membranes. tyr-d-ser-gly-phe-leu-thr-nh-nh-gly-mal 29-68 proenkephalin Rattus norvegicus 90-100 10510980-5 1999 In situ hybridization experiments suggested a significant enhancement of proenkephalin mRNA expression in specific brain regions 24 h after PTZ treatment. Pentylenetetrazole 140-143 proenkephalin Rattus norvegicus 73-86 10381776-7 1999 After 50 days of housing, plasma corticosterone, adrenal catecholamines, and the density of cyclic[D-penicillamine2-D-penicillamine2]enkephalin-stimu lat ed guanylyl 5"-[gamma[35S]thio]-triphosphate binding in the prefrontal cortex, the amygdala, nucleus accumbens, thalamus, arcuate, and median eminence were also determined. guanylyl 5"-[gamma[35s]thio]-triphosphate 157-198 proenkephalin Rattus norvegicus 133-143 10493735-4 1999 By using whole-cell current recordings, we show that the delta enkephalin analog [D-Ala(2), D-Leu(5)]-enkephalin (DADLE) inhibits, via DORs, L-, N-, P-, and Q-high voltage-activated Ca(2+) channel currents in cultured rat dorsal root ganglion (DRG) neurons. D-LEUCINE 92-97 proenkephalin Rattus norvegicus 63-73 10493735-4 1999 By using whole-cell current recordings, we show that the delta enkephalin analog [D-Ala(2), D-Leu(5)]-enkephalin (DADLE) inhibits, via DORs, L-, N-, P-, and Q-high voltage-activated Ca(2+) channel currents in cultured rat dorsal root ganglion (DRG) neurons. D-LEUCINE 92-97 proenkephalin Rattus norvegicus 102-112 10455306-7 1999 The GABA(B) receptor agonist, baclofen, and the opioid receptor agonist, enkephalin, partially inhibited the total barium current in a concentration-dependent manner with EC50 values of 2 and 0.3 microm , respectively. Barium 115-121 proenkephalin Rattus norvegicus 73-83 10455306-15 1999 In the presence of a saturating concentration of enkephalin, baclofen produced additional inhibition of the barium current. Baclofen 61-69 proenkephalin Rattus norvegicus 49-59 10455306-15 1999 In the presence of a saturating concentration of enkephalin, baclofen produced additional inhibition of the barium current. Barium 108-114 proenkephalin Rattus norvegicus 49-59 10455306-16 1999 In contrast, in the presence of a saturating concentration of enkephalin, UK14304 produced no further inhibition of the barium current. Brimonidine Tartrate 74-81 proenkephalin Rattus norvegicus 62-72 10415698-1 1999 These results using herpes virus-mediated gene transfer to overexpress enkephalin in the amygdala support the role of amygdalar opioids in the anxiolytic actions of benzodiazepines and supraspinal nociception (see ref. Benzodiazepines 165-180 proenkephalin Rattus norvegicus 71-81 10366614-1 1999 The role of enkephalin and the opioid receptors in modulating GABA release within the rat globus pallidus (GP) was investigated using whole-cell patch recordings made from visually identified neurons. gamma-Aminobutyric Acid 62-66 proenkephalin Rattus norvegicus 12-22 10366614-11 1999 Enkephalin, acting at both of these receptor subtypes, serves to reduce GABA release in the GP and may therefore act as an adaptive mechanism, maintaining the inhibitory function of the GP in basal ganglia circuitry. gamma-Aminobutyric Acid 72-76 proenkephalin Rattus norvegicus 0-10 10355593-6 1999 The mu-opioid receptor agonist DAMGO ([D-Ala2, NMe-Phe4, Gly5-ol]-enkephalin) caused a significant increase in serum prolactin concentration. [d-ala2, nme-phe4 38-55 proenkephalin Rattus norvegicus 66-76 10369482-6 1999 Intrastriatal administration of the selective micro-opioid receptor agonist [D-Ala2,MePhe4,Gly-ol5] enkephalin (DAMGO; 1 microM), significantly decreased the extracellular concentration of DA in the striatum. mephe4 84-90 proenkephalin Rattus norvegicus 100-110 10369482-6 1999 Intrastriatal administration of the selective micro-opioid receptor agonist [D-Ala2,MePhe4,Gly-ol5] enkephalin (DAMGO; 1 microM), significantly decreased the extracellular concentration of DA in the striatum. Dopamine 112-114 proenkephalin Rattus norvegicus 100-110 11498997-0 1999 [Effect of enkephalin on glial neurotrophic function related to the reduction of nitric oxide production]. Nitric Oxide 81-93 proenkephalin Rattus norvegicus 11-21 10355593-7 1999 The selective kappa-opioid receptor agonist U-50, 488H (trans-(+/-)-3,4-dichloro-N-[2(1-pyrrolidinyl)-cyclohexyl]-benzene acetamide methane sulfonate salt) induced a small but significant increase in serum prolactin levels but no effect was observed after administration of the delta-opioid agonist DPDPE ([D-Pen2, D-Pen5]-enkephalin). u-50 44-48 proenkephalin Rattus norvegicus 323-333 10355593-7 1999 The selective kappa-opioid receptor agonist U-50, 488H (trans-(+/-)-3,4-dichloro-N-[2(1-pyrrolidinyl)-cyclohexyl]-benzene acetamide methane sulfonate salt) induced a small but significant increase in serum prolactin levels but no effect was observed after administration of the delta-opioid agonist DPDPE ([D-Pen2, D-Pen5]-enkephalin). trans-(+/-)-3,4-dichloro-n-[2(1-pyrrolidinyl)-cyclohexyl]-benzene acetamide methane sulfonate salt 56-154 proenkephalin Rattus norvegicus 323-333 10404951-4 1999 The sequential administration of increasing doses (5, 10, 50 nmol) of the selective mu agonist [D-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin and delta agonists [D-Ala2, D-Leu5]-enkephalin or [D-Pen2, D-Pen5]-enkephalin into the same areas of the hippocampus as used for the kappa agonist had no significant effects on mean blood pressure and heart rate in either hypertensive or normotensive rats. gly5-ol 115-122 proenkephalin Rattus norvegicus 124-134 10323308-2 1999 Of 17 compounds tested, acetylcholine (Ach), neuropeptide Y (NPY), norepinephrine (NE), and met-enkephalin (met-Enk) were effective modulators of the Ca2+ currents. Acetylcholine 24-37 proenkephalin Rattus norvegicus 112-115 10095090-2 1999 In this study hamster Penk gene expression was examined after hypophysectomy+/-glucocorticoid receptor blockade with RU 486 (mifepristone). Mifepristone 117-123 proenkephalin Rattus norvegicus 22-26 10095090-2 1999 In this study hamster Penk gene expression was examined after hypophysectomy+/-glucocorticoid receptor blockade with RU 486 (mifepristone). Mifepristone 125-137 proenkephalin Rattus norvegicus 22-26 10103090-6 1999 In situ hybridization experiments in the caudate-putamen indicated that SR48692 (10 mg/kg) markedly reduced zif268 mRNA labelling produced by SKF38393 plus quinpirole in cells not expressing enkephalin mRNA, but was unable to affect the concomitant decrease of zif268 mRNA labelling in enkephalin-positive cells. SR 48692 72-79 proenkephalin Rattus norvegicus 286-296 10064821-7 1999 Taken together, these results reveal a strain difference in the reinforcing efficacy of morphine and in the basal PENK gene expression in brain regions involved in the reinforcing actions of opiates. Opiate Alkaloids 191-198 proenkephalin Rattus norvegicus 114-118 10029240-7 1999 GABA-like immunolabeled terminals contained small, clear, pleomorphic or round vesicles and were found to make synapses with ENK-like immunolabeled and nonimmunolabeled dendrites, whereas most of the ENK-like immunolabeled axon terminals contained dense-cored vesicles. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 125-128 10218785-10 1999 The enkephalin- and neurotensin-expressing cells in the amygdala are activated by D-fenfluramine via non-serotonergic mechanisms. Dexfenfluramine 82-96 proenkephalin Rattus norvegicus 4-14 10029240-7 1999 GABA-like immunolabeled terminals contained small, clear, pleomorphic or round vesicles and were found to make synapses with ENK-like immunolabeled and nonimmunolabeled dendrites, whereas most of the ENK-like immunolabeled axon terminals contained dense-cored vesicles. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 200-203 11972184-1 1999 In the present work, the effect of intrahippocampal microinjection of opioid receptor antagonist naloxone on the enhancement of cellular immune responses induced by enkephalin was studied in rat. Naloxone 97-105 proenkephalin Rattus norvegicus 165-175 9878688-0 1999 In the ventromedial nucleus of the rat hypothalamus, GABA-immunolabeled neurons are abundant and are innervated by both enkephalin- and GABA-immunolabeled axon terminals. gamma-Aminobutyric Acid 53-57 proenkephalin Rattus norvegicus 120-130 9878688-8 1999 Enkephalin-containing terminals accounted for a large fraction (25% 23/92) of the axons in contact with GABA-labeled dendrites, although they also contacted unlabeled dendrites. gamma-Aminobutyric Acid 104-108 proenkephalin Rattus norvegicus 0-10 9878688-11 1999 In addition, GABA-labeled VMN neurons may be regulated by either enkephalin or GABA. gamma-Aminobutyric Acid 13-17 proenkephalin Rattus norvegicus 65-75 10076874-0 1999 Prodynorphin and proenkephalin mRNAs are increased in rat brain after acute and chronic administration of gamma-hydroxybutyrate. Sodium Oxybate 106-127 proenkephalin Rattus norvegicus 17-30 10426535-4 1999 The expression of the messenger RNAs encoding glutamate decarboxylase-the biosynthetic enzyme of GABA-and the precursor peptides of enkephalin (preproenkephalin) and dynorphin (preprodynorphin) were measured in rats after a sustained blockade of opioid receptors by naloxone (s.c. implanted osmotic minipump, eight days, 3 mg/kg per h), and/or a subchronic blockade of D2 dopamine receptors by haloperidol (one week, 1.25 mg/kg s.c. twice a day). Naloxone 266-274 proenkephalin Rattus norvegicus 132-142 9988100-5 1999 In contrast, during the "drug expecting" state, heroin-treated animals had increased levels of dynorphin A, dynorphin B and [Met5]-enkephalin in the caudal striatum as compared to the cocaine- and saline-treated animals, and the level of [Leu5]-enkephalin was increased as compared to the cocaine-treated group. Heroin 48-54 proenkephalin Rattus norvegicus 131-141 9988100-5 1999 In contrast, during the "drug expecting" state, heroin-treated animals had increased levels of dynorphin A, dynorphin B and [Met5]-enkephalin in the caudal striatum as compared to the cocaine- and saline-treated animals, and the level of [Leu5]-enkephalin was increased as compared to the cocaine-treated group. Heroin 48-54 proenkephalin Rattus norvegicus 245-255 9988100-6 1999 In the septum, an increase of [Met5]-enkephalin and substance P was observed in the animals expecting heroin as compared to the saline- and/or cocaine-treated animals. Heroin 102-108 proenkephalin Rattus norvegicus 37-47 9988100-6 1999 In the septum, an increase of [Met5]-enkephalin and substance P was observed in the animals expecting heroin as compared to the saline- and/or cocaine-treated animals. Sodium Chloride 128-134 proenkephalin Rattus norvegicus 37-47 9988100-8 1999 In conclusion, heroin, as compared to cocaine, appears to have a more pronounced effect on dynorphin, enkephalin and substance P levels in the caudal striatum and septum, especially during periods when self-administration of the drug is expected. Heroin 15-21 proenkephalin Rattus norvegicus 102-112 10051187-2 1999 Haloperidol treatment for 34 weeks increased the optical density of preproenkephalin messenger RNA in individual striatal neurons and enkephalin peptide in the neuropil, regardless of the level of oral dyskinesia produced. Haloperidol 0-11 proenkephalin Rattus norvegicus 74-84 10465452-8 1999 The non-selective opioid receptor antagonist, naloxone, blocked the inhibitory responses of the neurons to endomorphin-1, endomorphin-2 and enkephalin, but not to nociceptin. Naloxone 46-54 proenkephalin Rattus norvegicus 140-150 10426535-4 1999 The expression of the messenger RNAs encoding glutamate decarboxylase-the biosynthetic enzyme of GABA-and the precursor peptides of enkephalin (preproenkephalin) and dynorphin (preprodynorphin) were measured in rats after a sustained blockade of opioid receptors by naloxone (s.c. implanted osmotic minipump, eight days, 3 mg/kg per h), and/or a subchronic blockade of D2 dopamine receptors by haloperidol (one week, 1.25 mg/kg s.c. twice a day). Haloperidol 394-405 proenkephalin Rattus norvegicus 132-142 10426535-13 1999 The down-regulation of mu opioid receptors following haloperidol represents probably an adaptive change to increased enkephalin biosynthesis and release. Haloperidol 53-64 proenkephalin Rattus norvegicus 117-127 10426535-16 1999 The reduction of pallidal glutamate decarboxylase messenger RNA expression following opioid receptor blockade indicates an indirect, excitatory influence of enkephalin upon globus pallidus neurons and, consequently, a functional antagonism between the two neuroactive substances (GABA and enkephalin) of the striatopallidal projection in the control of globus pallidus output. gamma-Aminobutyric Acid 280-284 proenkephalin Rattus norvegicus 157-167 10426535-17 1999 Through this antagonism enkephalin could partly attenuate the GABA-mediated effects of a dopaminergic denervation on pallidal neuronal activity. gamma-Aminobutyric Acid 62-66 proenkephalin Rattus norvegicus 24-34 10078614-0 1998 Glutamate/aspartate and leu-enkephalin immunoreactivity in mammillothalamic projection neurons of the rat. Leucine 24-27 proenkephalin Rattus norvegicus 28-38 9863697-7 1998 We concluded that glutamate neurons are involved in the development and maintenance of the PEnk gene expression in the neocortex. Glutamic Acid 18-27 proenkephalin Rattus norvegicus 91-95 9920202-8 1998 However, [D-Ala2, Met5]-enkephalinamide (20 nmol), an enkephalin analog, injected into the cPAG decreased the number of jumping without any influence on the other withdrawal signs. cpag 91-95 proenkephalin Rattus norvegicus 24-34 9813004-8 1998 It has a Km of 95 microM and a kcat of 7.8 s-1 on methionine-enkephalin, releasing only the N-terminal tyrosine. Tyrosine 103-111 proenkephalin Rattus norvegicus 61-71 9757037-3 1998 The pretreatment with staurosporine (1 microM) completely inhibited the increase of PGE2-induced proENK mRNA level, although only a partial inhibition of PGE2-induced proENK mRNA level (approximately 1.5-fold) by H89 (10 microM) was observed. Staurosporine 22-35 proenkephalin Rattus norvegicus 97-103 9873202-12 1998 Among opioid peptides endogenous to the pituitary, only met-ENK was able to unmask cryptic receptors, an effect antagonized by naltrindole. naltrindole 127-138 proenkephalin Rattus norvegicus 60-63 9819144-5 1998 The delta-opioid receptor agonist D-Pen2, D-Pen5-enkephalin (DPDPE, 10(-6) M) evoked [Ca2+]i increases that were blocked by the delta-opioid antagonist ICI 174.388 (10(-5) M). d-pen2 34-40 proenkephalin Rattus norvegicus 49-59 9831122-0 1998 Effects of acute benzene exposure on brain enkephalin immunostaining and degradation. Benzene 17-24 proenkephalin Rattus norvegicus 43-53 9831122-4 1998 Enkephalin immunostaining shows a significant increase in substantia nigra, central gray (dorsal, lateral and pontine), and tegmental nuclei in acute in vivo benzene-treated rats with respect to controls. Benzene 158-165 proenkephalin Rattus norvegicus 0-10 9757037-0 1998 Prostaglandin E2 increases proenkephalin mRNA level in rat astrocyte-enriched culture. Dinoprostone 0-16 proenkephalin Rattus norvegicus 27-40 9757037-1 1998 The effect of prostaglandin E2 (PGE2) on proenkephalin (proENK) mRNA expression in primary cultured rat astrocytes was studied. Dinoprostone 14-30 proenkephalin Rattus norvegicus 41-54 9757037-1 1998 The effect of prostaglandin E2 (PGE2) on proenkephalin (proENK) mRNA expression in primary cultured rat astrocytes was studied. Dinoprostone 14-30 proenkephalin Rattus norvegicus 56-62 9757037-1 1998 The effect of prostaglandin E2 (PGE2) on proenkephalin (proENK) mRNA expression in primary cultured rat astrocytes was studied. Dinoprostone 32-36 proenkephalin Rattus norvegicus 41-54 9757037-1 1998 The effect of prostaglandin E2 (PGE2) on proenkephalin (proENK) mRNA expression in primary cultured rat astrocytes was studied. Dinoprostone 32-36 proenkephalin Rattus norvegicus 56-62 9757037-2 1998 The proENK mRNA level was significantly increased about 3.3-fold 4 h after PGE2 (10 microM) treatment and this increase was potentiated by the pre-treatment with cycloheximide (CHX; 15 microM) about 1.7-fold as much as PGE2 alone treated cells. Dinoprostone 75-79 proenkephalin Rattus norvegicus 4-10 9845280-0 1998 Imipramine inhibits soluble enkephalin-degrading aminopeptidase activity in vitro. Imipramine 0-10 proenkephalin Rattus norvegicus 28-38 9845280-2 1998 Imipramine in vitro inhibits the enkephalin-degrading aminopeptidase MII and interacts with the enzyme in a mixed competitive-noncompetitive manner. Imipramine 0-10 proenkephalin Rattus norvegicus 33-43 9845280-3 1998 The present work shows that imipramine in vitro also inhibits reversibly soluble enkephalin-degrading aminopeptidase activity in rat brain. Imipramine 28-38 proenkephalin Rattus norvegicus 81-91 9757037-3 1998 The pretreatment with staurosporine (1 microM) completely inhibited the increase of PGE2-induced proENK mRNA level, although only a partial inhibition of PGE2-induced proENK mRNA level (approximately 1.5-fold) by H89 (10 microM) was observed. Dinoprostone 84-88 proenkephalin Rattus norvegicus 97-103 9757037-3 1998 The pretreatment with staurosporine (1 microM) completely inhibited the increase of PGE2-induced proENK mRNA level, although only a partial inhibition of PGE2-induced proENK mRNA level (approximately 1.5-fold) by H89 (10 microM) was observed. Dinoprostone 154-158 proenkephalin Rattus norvegicus 167-173 9757037-4 1998 The increase of PGE2-induced proENK mRNA level was not affected by the pretreatment with PD98059 (1, 5, and 10 microM), omega-conotoxin GIVA (1 microM), nimodipine (1 microM), calmidazolium (1 microM), or KN-62 (1 microM). Dinoprostone 16-20 proenkephalin Rattus norvegicus 29-35 9757037-9 1998 In western blot analyses, PGE2 enhanced the phosphorylation of CREB (approximately 2.6-fold at 1 h), and CHX showed a potentiative effect on PGE2-induced CREB phosphorylation ( approximately 1.7 fold at 1 h) which is similar to the action on proENK mRNA regulation. Dinoprostone 141-145 proenkephalin Rattus norvegicus 242-248 9757037-10 1998 Our results suggest that PGE2 increases proENK mRNA expression via activating serine/threonine protein kinase such as PKA, but not calcium/calmodulin dependent protein kinase and MAPK. Dinoprostone 25-29 proenkephalin Rattus norvegicus 40-46 9757037-11 1998 In addition, phosphorylation of CREB rather than the increase of AP-1 may have a possible role at least early stage in PGE2-induced proENK mRNA level and CHX-evoked potentiation. Dinoprostone 119-123 proenkephalin Rattus norvegicus 132-138 9757037-2 1998 The proENK mRNA level was significantly increased about 3.3-fold 4 h after PGE2 (10 microM) treatment and this increase was potentiated by the pre-treatment with cycloheximide (CHX; 15 microM) about 1.7-fold as much as PGE2 alone treated cells. Cycloheximide 162-175 proenkephalin Rattus norvegicus 4-10 9757037-2 1998 The proENK mRNA level was significantly increased about 3.3-fold 4 h after PGE2 (10 microM) treatment and this increase was potentiated by the pre-treatment with cycloheximide (CHX; 15 microM) about 1.7-fold as much as PGE2 alone treated cells. Cycloheximide 177-180 proenkephalin Rattus norvegicus 4-10 9757037-2 1998 The proENK mRNA level was significantly increased about 3.3-fold 4 h after PGE2 (10 microM) treatment and this increase was potentiated by the pre-treatment with cycloheximide (CHX; 15 microM) about 1.7-fold as much as PGE2 alone treated cells. Dinoprostone 219-223 proenkephalin Rattus norvegicus 4-10 9706936-5 1998 A peripheral delta-opioid receptor agonist, [D-Pen(2,5)] enkephalin (DPDPE), suppressed only Phase 2 of the formalin test. Formaldehyde 108-116 proenkephalin Rattus norvegicus 57-67 9873480-1 1998 Novel Leu-enkephalin (Leu-Enk) (1) analogs possessing various types of alpha-substituted serine instead of its glycine residue in the position 2 were synthesized via an efficient O,N-migration method. Leucine 6-9 proenkephalin Rattus norvegicus 26-29 9873480-1 1998 Novel Leu-enkephalin (Leu-Enk) (1) analogs possessing various types of alpha-substituted serine instead of its glycine residue in the position 2 were synthesized via an efficient O,N-migration method. alpha-substituted serine 71-95 proenkephalin Rattus norvegicus 26-29 9873480-1 1998 Novel Leu-enkephalin (Leu-Enk) (1) analogs possessing various types of alpha-substituted serine instead of its glycine residue in the position 2 were synthesized via an efficient O,N-migration method. Glycine 111-118 proenkephalin Rattus norvegicus 26-29 9832925-3 1998 The cocaine-induced increase in locomotor activity was potentiated by the selective delta-opioid receptor agonist [D-Pen2-D-Pen5]enkephalin (DPDPE). Cocaine 4-11 proenkephalin Rattus norvegicus 129-139 9726289-0 1998 Effects of chronic ethanol consumption and aging on proenkephalin and neurotensin. Ethanol 19-26 proenkephalin Rattus norvegicus 52-65 9726289-1 1998 We examined the combined effects of chronic ethanol consumption and aging on mRNA and peptide for proenkephalin (PE), the precursor of met- and leu-enkephalin. Ethanol 44-51 proenkephalin Rattus norvegicus 98-111 9639282-7 1998 [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin binding to mu opioid receptors was significantly higher in the globus pallidus, amygdala, thalamus, hypothalamus, hippocampus, substantia nigra, ventral tegmental area, central gray, and interpeduncular nucleus of the naltrexone-treated rats. Tritium 1-3 proenkephalin Rattus norvegicus 29-39 9826786-5 1998 Activation of protein kinase A with 8Br.cAMP strongly enhanced the number of cells that expressed the PEnk gene in slices prepared from the brains of newborn or 7-d-old rats. 8-Bromoadenosine 5'-monophosphate 36-39 proenkephalin Rattus norvegicus 102-106 9826786-5 1998 Activation of protein kinase A with 8Br.cAMP strongly enhanced the number of cells that expressed the PEnk gene in slices prepared from the brains of newborn or 7-d-old rats. Cyclic AMP 40-44 proenkephalin Rattus norvegicus 102-106 9826786-7 1998 After stimulation with 8Br.cAMP or PACAP-38, PEnk mRNA-containing cells were found in the subventricular zone as well as in the adjacent area through which glial cells migrate on their way to the neocortex. 8-Bromoadenosine 5'-monophosphate 23-26 proenkephalin Rattus norvegicus 45-49 9826786-7 1998 After stimulation with 8Br.cAMP or PACAP-38, PEnk mRNA-containing cells were found in the subventricular zone as well as in the adjacent area through which glial cells migrate on their way to the neocortex. Cyclic AMP 27-31 proenkephalin Rattus norvegicus 45-49 9639277-0 1998 Apposition of enkephalin- and neurotensin-immunoreactive neurons by serotonin-immunoreactive varicosities in the rat spinal cord. Serotonin 68-77 proenkephalin Rattus norvegicus 14-24 9694948-7 1998 Furthermore, the distribution in rat brain regions of the binding of 35S-GTPgammaS stimulated by nociceptin differed from that stimulated by the mu opioid agonist [D-Ala2, N-Me-Phe4, Gly5-ol)]-enkephalin. Sulfur-35 69-72 proenkephalin Rattus norvegicus 193-203 9639277-4 1998 Using a double immunofluorescence technique, serotonin-immunoreactive varicosities were observed to abut the soma or proximal dendrites of [Met]enkephalin- and neurotensin-immunoreactive neurons. Serotonin 45-54 proenkephalin Rattus norvegicus 144-154 9639277-5 1998 Nearly 75% of all [Met]enkephalin- and neurotensin-immunoreactive neurons were apposed by serotonin-immunoreactive varicosities in the marginal zone and dorsal gray commissure. Serotonin 90-99 proenkephalin Rattus norvegicus 23-33 9639277-7 1998 [Met]enkephalin-immunoreactive neurons also were bordered by serotonin-immunoreactive varicosities in the nucleus proprius (65%) and sacral parasympathetic nucleus (75%). Serotonin 61-70 proenkephalin Rattus norvegicus 5-15 9639277-9 1998 The mode of action of spinal serotonin on enkephalin and neurotensin neurons may be through "volume" transmission vs synaptic or "wiring" transmission. Serotonin 29-38 proenkephalin Rattus norvegicus 42-52 9639282-7 1998 [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin binding to mu opioid receptors was significantly higher in the globus pallidus, amygdala, thalamus, hypothalamus, hippocampus, substantia nigra, ventral tegmental area, central gray, and interpeduncular nucleus of the naltrexone-treated rats. methylamine 11-15 proenkephalin Rattus norvegicus 29-39 9639282-7 1998 [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin binding to mu opioid receptors was significantly higher in the globus pallidus, amygdala, thalamus, hypothalamus, hippocampus, substantia nigra, ventral tegmental area, central gray, and interpeduncular nucleus of the naltrexone-treated rats. Glycine 21-24 proenkephalin Rattus norvegicus 29-39 9639282-7 1998 [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin binding to mu opioid receptors was significantly higher in the globus pallidus, amygdala, thalamus, hypothalamus, hippocampus, substantia nigra, ventral tegmental area, central gray, and interpeduncular nucleus of the naltrexone-treated rats. Naltrexone 258-268 proenkephalin Rattus norvegicus 29-39 9708865-3 1998 In the present study, the selective mu-opioid agonist, D-Ala2-N-Me-Phe4,Gly-ol5-enkephalin (DAMGO), was used to further test the hypothesis. d-ala2-n-me-phe4 55-71 proenkephalin Rattus norvegicus 80-90 10102680-5 1998 Naive rats receiving a stress stimulus showed a significant decrease of proenkephalin derived peptides in BMMC, TMC and SMC. trimethylchlorosilane 112-115 proenkephalin Rattus norvegicus 72-85 9602069-0 1998 The modulatory role of nitric oxide in the regulation of proenkephalin and prodynorphin gene expressions induced by kainic acid in rat hippocampus. Nitric Oxide 23-35 proenkephalin Rattus norvegicus 57-70 9651168-0 1998 Synthesis and biological activity of a novel methylamine-bridged enkephalin analogue (MABE): a new route to cyclic peptides and peptidomimetics. methylamine 45-56 proenkephalin Rattus norvegicus 65-75 9651168-0 1998 Synthesis and biological activity of a novel methylamine-bridged enkephalin analogue (MABE): a new route to cyclic peptides and peptidomimetics. Peptides, Cyclic 108-123 proenkephalin Rattus norvegicus 65-75 9651168-1 1998 The synthesis and biological activity of a methylamine-bridged enkephalin analogue (MABE) is presented. methylamine 43-54 proenkephalin Rattus norvegicus 63-73 9547380-8 1998 Nociceptin (EC50, 5 nM) and baclofen (EC50, 0.8 microM) inhibited IBa in all PAG neurons, while the opioid agonist methionine enkephalin (met-enkephalin; 300 nM-10 microM) inhibited IBa in 40 % of neurons. Baclofen 28-36 proenkephalin Rattus norvegicus 142-152 9547380-9 1998 The effects of met-enkephalin were reversed by the mu-opioid antagonist CTAP, and mimicked by the mu-opioid agonist DAMGO (300 nM-3 microM). CTAP 72-76 proenkephalin Rattus norvegicus 19-29 9602069-9 1998 Our results suggest that L-ARG plays an important role in inhibiting KA-induced proENK or proDYN mRNA expression, and its inhibitory action may be mediated through reducing the proto-oncoprotein levels, such as c-Fos, Fra-2, FosB, c-Jun, JunD, and JunB. Arginine 25-30 proenkephalin Rattus norvegicus 80-86 9618438-2 1998 A previous study demonstrated peripheral morphine administration to increase pallidal enkephalin release. Morphine 41-49 proenkephalin Rattus norvegicus 86-96 9618438-6 1998 High concentrations of morphine (100 nM to 100 microM) had little or no effect, whereas M6G (10 microM) suppressed enkephalin release, an effect that was reversed by beta-FNA. beta-funaltrexamine 166-174 proenkephalin Rattus norvegicus 115-125 9602069-0 1998 The modulatory role of nitric oxide in the regulation of proenkephalin and prodynorphin gene expressions induced by kainic acid in rat hippocampus. Kainic Acid 116-127 proenkephalin Rattus norvegicus 57-70 9602069-4 1998 The elevations of both proENK and proDYN mRNA levels induced by KA was effectively inhibited by pre-administration of L-ARG (400 mg/kg, i.p. Arginine 118-123 proenkephalin Rattus norvegicus 23-29 9602069-6 1998 The blockade of KA-induced proENK and proDYN mRNA levels by the pre-treatment with L-ARG was well correlated with proto-oncoprotein levels, such as c-Fos, Fra-2, FosB, JunD, JunB, and c-Jun, as well as AP-1 and ENKCRE-2 DNA binding activities. Arginine 83-88 proenkephalin Rattus norvegicus 27-33 9751150-6 1998 Enkephalin-immunoreactive cells co-localized GABA, vasoactive intestinal polypeptide and calretinin. gamma-Aminobutyric Acid 45-49 proenkephalin Rattus norvegicus 0-10 9751150-7 1998 Postembedding immunogold staining for GABA showed that all the analysed enkephalin-immunoreactive boutons contacted GABAergic postsynaptic structures. gamma-Aminobutyric Acid 38-42 proenkephalin Rattus norvegicus 72-82 9580643-2 1998 In 3-hr tests of free-feeding (satiated) rats, intra-ACB administration of the mu receptor agonist D-Ala2,N,Me-Phe4, Gly-ol5-enkephalin (DAMGO; 0, 0.025, 0.25 and 2.5 micrograms bilaterally) markedly enhanced the intake of fat or carbohydrate when the diets were presented individually (although the effect on fat intake was much greater in magnitude). Nitrogen 106-107 proenkephalin Rattus norvegicus 125-135 9548897-1 1998 The effects of various protease inhibitors on the stability of leucine enkephalin (Leu-Enk) and [D-Ala2,D-Leu5] enkephalin (DADLE) were investigated, and the permeability of these peptides was also examined in an in vitro Ussing chamber. Leucine 83-86 proenkephalin Rattus norvegicus 87-90 9717445-1 1998 Systemic administration of opioid peptides, methionine-enkephalin and beta-endorphin, chronically, lowered gonadotropin levels in plasma and had an inhibitory effect mainly on the testicular enzymes hyaluronidase, acid phosphatase and on incorporation of 3[H] thymidine in the tissue. Thymidine 260-269 proenkephalin Rattus norvegicus 55-65 9593954-3 1998 Saturation binding analysis with [3H][d-Ala2,N-methyl-Phe4,Gly5-ol]enkephalin (DAMGO: a mu-opioid selective agonist) and [3H]naltrindole (a delta-opioid selective antagonist) revealed no age-related changes in Bmax for either the mu or delta-opioid receptors. Tritium 34-36 proenkephalin Rattus norvegicus 67-77 9548897-5 1998 In the transport studies, Leu-Enk did not cross the intestinal membrane in the absence of protease inhibitors, but its transport was improved in the presence of Na-GC. Leucine 26-29 proenkephalin Rattus norvegicus 30-33 9548897-5 1998 In the transport studies, Leu-Enk did not cross the intestinal membrane in the absence of protease inhibitors, but its transport was improved in the presence of Na-GC. na-gc 161-166 proenkephalin Rattus norvegicus 30-33 9555062-0 1998 The stimulation of rat astrocytes with phorbol-12-myristate-13-acetate increases the proenkephalin mRNA: involvement of proto-oncogenes. Tetradecanoylphorbol Acetate 39-70 proenkephalin Rattus norvegicus 85-98 9583756-3 1998 Both DAMGO ([D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin, a mu-opioid receptor agonist) and DPDPE ([D-Phe2,D-Phe5]-enkephalin, a delta-opioid receptor agonist) dose-dependently relieved the chronic allodynia-like behavior at doses selective for their respective receptors. n-me-phe4 20-29 proenkephalin Rattus norvegicus 39-49 9555037-3 1998 In the present study, involvement of Fos in the mechanism of the PENK and PDYN gene induction in the hippocampal dentate gyrus during seizures elicited by kainic acid was studied using a knock-down technique. Kainic Acid 155-166 proenkephalin Rattus norvegicus 65-69 9555037-6 1998 The subsequent induction of PENK and PDYN mRNAs was reduced by more than 60% by the c-fos antisense oligonucleotide, while constitutive expression of three other genes (alpha-tubulin, NMDA receptor-1, and GS protein alpha-subunit) was not affected. Oligonucleotides 100-115 proenkephalin Rattus norvegicus 28-32 9645967-5 1998 Subchronic administration of THC or AM356 increased PENK mRNA levels in the ventromedial nucleus of the hypothalamus, (82%) and (39%), in the periaqueductal grey matter, (97%) and (49%), and mammillary nucleus, (43%) and (9%), respectively. Dronabinol 29-32 proenkephalin Rattus norvegicus 52-56 9645967-5 1998 Subchronic administration of THC or AM356 increased PENK mRNA levels in the ventromedial nucleus of the hypothalamus, (82%) and (39%), in the periaqueductal grey matter, (97%) and (49%), and mammillary nucleus, (43%) and (9%), respectively. methanandamide 36-41 proenkephalin Rattus norvegicus 52-56 9645967-7 1998 On the other hand, chronic administration of CP-55,940 increased PENK mRNA levels in the striatum (44%), nucleus accumbens (25%), paraventricular (31%) and ventromedial nuclei of the hypothalamus (41%). cp-55 45-50 proenkephalin Rattus norvegicus 65-69 9555022-0 1998 RU-486 blocks stress-induced enhancement of proenkephalin gene expression in the paraventricular nucleus of rat hypothalamus. Mifepristone 0-6 proenkephalin Rattus norvegicus 44-57 9555022-5 1998 Stress induced by injection of hypertonic saline increased both CRH and PE mRNA levels in PVN. Sodium Chloride 42-48 proenkephalin Rattus norvegicus 72-74 9555022-6 1998 Administration of RU-486 completely blocked the stress-induced increase of PE mRNA levels, but failed to alter the CRH mRNA levels in the PNV. Mifepristone 18-24 proenkephalin Rattus norvegicus 75-77 9555022-7 1998 These data suggests that, under these experimental conditions, endogenous GC are necessary for a normal PE response to hypertonic saline stress. Sodium Chloride 130-136 proenkephalin Rattus norvegicus 104-106 9555062-1 1998 The effect of phorbol-12-myristate-13-acetate (PMA) on the regulation of proenkephalin (proENK) mRNA level, ENKCRE-2 or AP-1 DNA binding activity, and the mRNA and protein levels of proto-oncogenes (c-fos, fra-1, and c-jun) in primary cultured rat astrocytes were studied. Tetradecanoylphorbol Acetate 47-50 proenkephalin Rattus norvegicus 73-86 9555062-2 1998 The proENK mRNA level was elevated at 4 h after the treatment of PMA (2.5 microM) without altering the intracellular proENK protein level, and this increase was attenuated by pre-treatment with cycloheximide (CHX; 15 microM), a protein synthesis inhibitor. Cycloheximide 194-207 proenkephalin Rattus norvegicus 4-10 9555062-2 1998 The proENK mRNA level was elevated at 4 h after the treatment of PMA (2.5 microM) without altering the intracellular proENK protein level, and this increase was attenuated by pre-treatment with cycloheximide (CHX; 15 microM), a protein synthesis inhibitor. Cycloheximide 194-207 proenkephalin Rattus norvegicus 117-123 9555062-2 1998 The proENK mRNA level was elevated at 4 h after the treatment of PMA (2.5 microM) without altering the intracellular proENK protein level, and this increase was attenuated by pre-treatment with cycloheximide (CHX; 15 microM), a protein synthesis inhibitor. Cycloheximide 209-212 proenkephalin Rattus norvegicus 4-10 9555062-3 1998 Both AP-1 and ENKCRE-2 DNA binding activities were markedly increased at 1-4 h by PMA treatment and these PMA-induced responses were inhibited by pre-treatment with CHX, showing that the increase of proENK mRNA level was well correlated with the AP-1 and ENKCRE-2 DNA binding activities. Tetradecanoylphorbol Acetate 82-85 proenkephalin Rattus norvegicus 199-205 9555062-3 1998 Both AP-1 and ENKCRE-2 DNA binding activities were markedly increased at 1-4 h by PMA treatment and these PMA-induced responses were inhibited by pre-treatment with CHX, showing that the increase of proENK mRNA level was well correlated with the AP-1 and ENKCRE-2 DNA binding activities. Tetradecanoylphorbol Acetate 106-109 proenkephalin Rattus norvegicus 199-205 9555062-3 1998 Both AP-1 and ENKCRE-2 DNA binding activities were markedly increased at 1-4 h by PMA treatment and these PMA-induced responses were inhibited by pre-treatment with CHX, showing that the increase of proENK mRNA level was well correlated with the AP-1 and ENKCRE-2 DNA binding activities. Cycloheximide 165-168 proenkephalin Rattus norvegicus 199-205 9518706-8 1998 This noise was abolished by strychnine (1 microM) but was insensitive to bicuculline (10 microM), TTX (0.5 microM), [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO, 1 microM) or baclofen (30 microM). Strychnine 28-38 proenkephalin Rattus norvegicus 143-153 9464992-2 1998 The mu-opioid receptor agonist D-Ala2,N-Me-Phe4,glycinol5-enkephalin (DAMGO) evoked a hyperpolarization and decrease in input resistance that was reversible, concentration-dependent, and persisted in the presence of tetrodotoxin. n-me-phe4 38-47 proenkephalin Rattus norvegicus 58-68 9464992-2 1998 The mu-opioid receptor agonist D-Ala2,N-Me-Phe4,glycinol5-enkephalin (DAMGO) evoked a hyperpolarization and decrease in input resistance that was reversible, concentration-dependent, and persisted in the presence of tetrodotoxin. Tetrodotoxin 216-228 proenkephalin Rattus norvegicus 58-68 9519284-0 1998 Phenidone blocks the increases of proenkephalin and prodynorphin gene expression induced by kainic acid in rat hippocampus: involvement of Fos-related antigene protein. phenidone 0-9 proenkephalin Rattus norvegicus 34-47 9486827-6 1998 In contrast, few enkephalin-containing neuronal afferents to the hypoglossal nucleus also contain serotonin. Serotonin 98-107 proenkephalin Rattus norvegicus 17-27 9463438-5 1998 Half-maximal inhibition of Ba2+ current (IBa) amplitude was obtained with 270 nM Met-enkephalin or Leu-enkephalin. N-methyl-valyl-amiclenomycin 27-31 proenkephalin Rattus norvegicus 85-95 9463438-5 1998 Half-maximal inhibition of Ba2+ current (IBa) amplitude was obtained with 270 nM Met-enkephalin or Leu-enkephalin. N-methyl-valyl-amiclenomycin 27-31 proenkephalin Rattus norvegicus 103-113 9463438-11 1998 Dialysis of the cell with a GTP-free intracellular solution or preincubation of the neurons in Pertussis toxin (PTX) abolished the attenuation of IBa by Met-enkephalin, suggesting the involvement of a PTX-sensitive Gprotein in the signal transduction pathway. Guanosine Triphosphate 28-31 proenkephalin Rattus norvegicus 157-167 9502431-2 1998 Both ligands stimulated PENK gene transcription in a dose-dependent manner, with an apparent ED50 close to 5 x 10(-11) M. Inactivation of cAMP dependent-protein kinase (PKA) with a dominant inhibitory mutant strongly reduced PACAP-stimulated PENK transcription. pacap 225-230 proenkephalin Rattus norvegicus 24-28 9502431-5 1998 Expression of a dominant inhibitory mutant of CREB decreased by 60% the response to PACAP, suggesting that CREB is implicated in PENK transactivation. pacap 84-89 proenkephalin Rattus norvegicus 129-133 9502431-7 1998 Taken together, these results indicate that PACAP stimulates PENK transcription by members of both the AP1 and the CREB families. pacap 44-49 proenkephalin Rattus norvegicus 61-65 9519284-0 1998 Phenidone blocks the increases of proenkephalin and prodynorphin gene expression induced by kainic acid in rat hippocampus: involvement of Fos-related antigene protein. Kainic Acid 92-103 proenkephalin Rattus norvegicus 34-47 9519284-1 1998 To determine the possible role of cyclooxygenase/lipoxygenase pathway in the regulation of proenkephalin (proENK) and prodynorphin (proDYN) gene expression induced by kainic acid (KA) in rat hippocampus, the effects of esculetin, aspirin, or phenidone on the seizure activity, proENK and proDYN mRNA levels, and the level of fos-related antigene (Fra) protein induced by KA in rat hippocampus were studied. Kainic Acid 167-178 proenkephalin Rattus norvegicus 91-104 9443794-1 1998 Methionine-enkephalin (met-enk), an endogenous opiate, mimics many of the effects of morphine by binding to opiate receptors, thereby eliciting similar cellular and behavioral effects. Morphine 85-93 proenkephalin Rattus norvegicus 11-14 9443794-6 1998 Analysis by fast atom bombardment mass spectrometry suggested that the recovered fragment was met-enk Administration of met-enk inhibits osteoblast cell growth in culture, which is reversible by naltrexone. Naltrexone 195-205 proenkephalin Rattus norvegicus 98-101 9443794-6 1998 Analysis by fast atom bombardment mass spectrometry suggested that the recovered fragment was met-enk Administration of met-enk inhibits osteoblast cell growth in culture, which is reversible by naltrexone. Naltrexone 195-205 proenkephalin Rattus norvegicus 124-127 9627081-0 1998 Enhanced hemodynamic response to [D-ALA2,D-MET5]-methionine enkephalin (DAME) in streptozotocin-induced diabetic rats is reversed by insulin replacement. Streptozocin 81-95 proenkephalin Rattus norvegicus 60-70 9672105-3 1998 This being the case, we focused on analyzing enkephalin immunostaining in several regions of the rat brain after lidocaine administration. Lidocaine 113-122 proenkephalin Rattus norvegicus 45-55 9734704-0 1998 Perinatal delta9-tetrahydrocannabinol exposure reduces proenkephalin gene expression in the caudate-putamen of adult female rats. Dronabinol 10-37 proenkephalin Rattus norvegicus 55-68 9734704-5 1998 The results showed a marked reduction in proenkephalin mRNA levels in the caudate-putamen of delta9-THC-exposed females as compared to oil-exposed females, whereas no changes were observed between delta9-THC- and oil-exposed males. Dronabinol 93-103 proenkephalin Rattus norvegicus 41-54 9734704-7 1998 In summary, perinatal exposure to delta9-THC exposure decreased proenkephalin gene expression in the caudate-putamen of adult rats, although this effect exhibited a marked sexual dimorphism since it was only seen in females. Dronabinol 34-44 proenkephalin Rattus norvegicus 64-77 9434132-2 1997 Expression of this receptor was demonstrated with specific binding of the mu-opioid selective ligand [3H][D-Ala2,N-MePhe4,Gly5-ol]-enkephalin ([3H]DAMGO). n-mephe4 113-121 proenkephalin Rattus norvegicus 131-141 9700759-3 1998 Quantitative binding studies resolved two high-affinity [3H][D-Ala2,D-Leu5]enkephalin binding sites in rat brain membranes depleted of mu binding sites by pretreatment with the irreversible agent BIT. Tritium 57-60 proenkephalin Rattus norvegicus 75-85 9700759-8 1998 Under these assay conditions, [3H][D-Ala2,D-Leu5]enkephalin binding to the cells expressing the cloned mu receptor is very low and pretreatment of cell membranes with BIT almost completely inhibits [3H]DAMGO and [3H][D-Ala2,D-Leu5]enkephalin binding. Tritium 31-33 proenkephalin Rattus norvegicus 49-59 9700759-8 1998 Under these assay conditions, [3H][D-Ala2,D-Leu5]enkephalin binding to the cells expressing the cloned mu receptor is very low and pretreatment of cell membranes with BIT almost completely inhibits [3H]DAMGO and [3H][D-Ala2,D-Leu5]enkephalin binding. d-leu5 42-48 proenkephalin Rattus norvegicus 49-59 9700759-8 1998 Under these assay conditions, [3H][D-Ala2,D-Leu5]enkephalin binding to the cells expressing the cloned mu receptor is very low and pretreatment of cell membranes with BIT almost completely inhibits [3H]DAMGO and [3H][D-Ala2,D-Leu5]enkephalin binding. Tritium 199-201 proenkephalin Rattus norvegicus 49-59 9700759-8 1998 Under these assay conditions, [3H][D-Ala2,D-Leu5]enkephalin binding to the cells expressing the cloned mu receptor is very low and pretreatment of cell membranes with BIT almost completely inhibits [3H]DAMGO and [3H][D-Ala2,D-Leu5]enkephalin binding. Tritium 199-201 proenkephalin Rattus norvegicus 49-59 9700759-9 1998 Intracerebroventricular administration of antisense DNA to the cloned delta receptor selectively decreased [3H][D-Ala2,D-Leu5]enkephalin binding to the delta ncx-1 site. Tritium 108-110 proenkephalin Rattus norvegicus 126-136 9700759-9 1998 Intracerebroventricular administration of antisense DNA to the cloned delta receptor selectively decreased [3H][D-Ala2,D-Leu5]enkephalin binding to the delta ncx-1 site. d-leu5 119-125 proenkephalin Rattus norvegicus 126-136 9434132-2 1997 Expression of this receptor was demonstrated with specific binding of the mu-opioid selective ligand [3H][D-Ala2,N-MePhe4,Gly5-ol]-enkephalin ([3H]DAMGO). Tritium 102-104 proenkephalin Rattus norvegicus 131-141 9434132-2 1997 Expression of this receptor was demonstrated with specific binding of the mu-opioid selective ligand [3H][D-Ala2,N-MePhe4,Gly5-ol]-enkephalin ([3H]DAMGO). gly5-ol 122-129 proenkephalin Rattus norvegicus 131-141 9434132-2 1997 Expression of this receptor was demonstrated with specific binding of the mu-opioid selective ligand [3H][D-Ala2,N-MePhe4,Gly5-ol]-enkephalin ([3H]DAMGO). Tritium 144-146 proenkephalin Rattus norvegicus 131-141 9353363-2 1997 The ligand binding affinities for [3H]naltrindole and [3H]pCl-[D-Pen2,D-Pen5]enkephalin (DPDPE) were similar to those observed in monkey brain membranes. Enkephalin, D-Penicillamine (2,5)- 89-94 proenkephalin Rattus norvegicus 77-87 9427505-6 1997 Pre-treatment of rats with thiopental prior to kainic acid prevented seizures, the decline in catecholamines and the elevation of enkephalin and neuropeptide Y mRNAs but not that of chromogranin B. Thiopental 27-37 proenkephalin Rattus norvegicus 130-140 9334431-5 1997 Intranigral injections of [D-Ala2, N-Me-Phe4, Gly-ol5]-enkephalin (DAMGO), a mu opioid receptor agonist, and of bicuculline, a GABAA receptor antagonist, induced Fos in ipsilateral striatum. n-me-phe4 35-44 proenkephalin Rattus norvegicus 55-65 9469529-0 1997 Pain-suppressive effects on various nociceptive stimuli (thermal, chemical, electrical and inflammatory) of the first orally active enkephalin-metabolizing enzyme inhibitor RB 120. RB 120 173-179 proenkephalin Rattus norvegicus 132-142 9469529-1 1997 RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyldithio]-1-oxopr opyl)-L-phenylalanine benzyl ester) is a full inhibitor of the enkephalin-catabolizing enzymes, which induces strong naloxone-reversible antinociceptive responses after i.v. RB 101 0-6 proenkephalin Rattus norvegicus 137-147 9469529-1 1997 RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyldithio]-1-oxopr opyl)-L-phenylalanine benzyl ester) is a full inhibitor of the enkephalin-catabolizing enzymes, which induces strong naloxone-reversible antinociceptive responses after i.v. Naloxone 191-199 proenkephalin Rattus norvegicus 137-147 9449413-7 1997 Estradiol-induced enkephalin levels were greatly reduced in antisense-treated groups. Estradiol 0-9 proenkephalin Rattus norvegicus 18-28 9376223-1 1997 Maximally effective concentrations of the opioid agonist D-ala2-D-leu5-enkephalin resulted in some 2-3-fold enhancement of tyrosine phosphorylation of the p52 Shc adapter protein in a clone of Rat-1 fibroblasts transfected to express stably the murine delta opioid receptor. Tyrosine 123-131 proenkephalin Rattus norvegicus 71-81 9367272-1 1997 he effect of intrathecally administered [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO) on withdrawal latencies evoked by noxious heat applied to either cervical or lumbar dermatomes was studied in awake rats. n-me-phe4 48-57 proenkephalin Rattus norvegicus 67-77 9305540-0 1997 Discrimination of a novel type of rat brain delta opioid receptors by enkephalin analog containing structurally constrained cyclopropylphenylalanine (inverted delta Phe). cyclopropylphenylalanine 124-148 proenkephalin Rattus norvegicus 70-80 9305540-0 1997 Discrimination of a novel type of rat brain delta opioid receptors by enkephalin analog containing structurally constrained cyclopropylphenylalanine (inverted delta Phe). Phenylalanine 165-168 proenkephalin Rattus norvegicus 70-80 9389377-7 1997 Whole brain membranes were prepared from separate groups of rats for determination of binding parameters of [3H][D-Ala2, N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO). Tritium 109-111 proenkephalin Rattus norvegicus 140-150 9389377-7 1997 Whole brain membranes were prepared from separate groups of rats for determination of binding parameters of [3H][D-Ala2, N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO). n-me-phe4 121-130 proenkephalin Rattus norvegicus 140-150 9350624-7 1997 The selective mu- and delta-receptor blockers naloxonazine (10-20 microM) and naltrindole (50-100 microM) antagonized the effects of 5 microM fentanyl and 50 microM Ala-Leu-Enk, respectively. naloxonazine 46-58 proenkephalin Rattus norvegicus 173-176 9350624-7 1997 The selective mu- and delta-receptor blockers naloxonazine (10-20 microM) and naltrindole (50-100 microM) antagonized the effects of 5 microM fentanyl and 50 microM Ala-Leu-Enk, respectively. naltrindole 78-89 proenkephalin Rattus norvegicus 173-176 9350624-7 1997 The selective mu- and delta-receptor blockers naloxonazine (10-20 microM) and naltrindole (50-100 microM) antagonized the effects of 5 microM fentanyl and 50 microM Ala-Leu-Enk, respectively. Fentanyl 142-150 proenkephalin Rattus norvegicus 173-176 9374199-7 1997 In both saline and NTX-treated lactating subjects, ARC mRNA levels of proDYN, POMC and proENK were significantly decreased compared with the saline or NTX-treated post-lactating subjects (P < 0.01). Sodium Chloride 8-14 proenkephalin Rattus norvegicus 87-93 9374199-7 1997 In both saline and NTX-treated lactating subjects, ARC mRNA levels of proDYN, POMC and proENK were significantly decreased compared with the saline or NTX-treated post-lactating subjects (P < 0.01). Naltrexone 19-22 proenkephalin Rattus norvegicus 87-93 9376543-3 1997 Using immunocytochemistry in colchicine-treated rats, we showed that, in the lateral subdivision of the central amygdaloid nucleus and in the dorsal part of the lateral bed nucleus of the stria terminalis, a population of GABAergic neurones is able to co-synthesize either corticotropin-releasing factor or methionine-enkephalin, but never both peptides. Colchicine 29-39 proenkephalin Rattus norvegicus 318-328 9376223-5 1997 Half-maximal effects of D-ala2-D-leu5-enkephalin on p52 Shc tyrosine phosphorylation were produced with sub-nanomolar concentrations, in agreement with previous results on the tyrosine phosphorylation of p44MAPK (Burt et al., 1996). Tyrosine 60-68 proenkephalin Rattus norvegicus 38-48 9376223-5 1997 Half-maximal effects of D-ala2-D-leu5-enkephalin on p52 Shc tyrosine phosphorylation were produced with sub-nanomolar concentrations, in agreement with previous results on the tyrosine phosphorylation of p44MAPK (Burt et al., 1996). Tyrosine 176-184 proenkephalin Rattus norvegicus 38-48 9376223-6 1997 p52 Shc became tyrosine phosphorylated more rapidly than p44MAPK in response to D-ala2-D-leu5-enkephalin and its enhanced tyrosine phosphorylation was maintained for at least 10 min. Tyrosine 15-23 proenkephalin Rattus norvegicus 94-104 9256498-5 1997 This study demonstrated that a single systemic injection of kainate produces almost permanent increases in the enkephalin and an activator protein-1 transcription factor, the 35-kDa fos-related antigen, in the rat hippocampus, and it is likely that these two events are closely associated with the molecular mechanisms of induction of long-lasting enhanced seizure susceptibility in the kainate-induced seizure model. Kainic Acid 60-67 proenkephalin Rattus norvegicus 111-121 9305540-1 1997 Four different stereoisomers of cyclopropylphenylalanine (inverted delta Phe) were incorporated into [D-Ala2,Leu5]enkephalin at the position 4. cyclopropylphenylalanine 32-56 proenkephalin Rattus norvegicus 114-124 9305540-1 1997 Four different stereoisomers of cyclopropylphenylalanine (inverted delta Phe) were incorporated into [D-Ala2,Leu5]enkephalin at the position 4. delta phe 67-76 proenkephalin Rattus norvegicus 114-124 9566035-0 1997 Imipramine induces alterations in proenkephalin and prodynorphin mRNAs level in the nucleus accumbens and striatum in the rat. Imipramine 0-10 proenkephalin Rattus norvegicus 34-47 9566035-2 1997 In this study, we evaluated effects of single and repeated imipramine administration on proenkephalin and prodynorphin gene expression in the rat nucleus accumbens and striatum. Imipramine 59-69 proenkephalin Rattus norvegicus 88-101 9262366-7 1997 Additionally, N(G)-nitro-L-arginine methyl ester (100 microg) profoundly potentiated the antinociception induced by [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (0.5, 15 ng) and [D-Pen(2,5)]enkephalin (2, 10 microg) in the dose-related manner in the formalin test. NG-Nitroarginine Methyl Ester 14-48 proenkephalin Rattus norvegicus 143-153 9262366-7 1997 Additionally, N(G)-nitro-L-arginine methyl ester (100 microg) profoundly potentiated the antinociception induced by [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (0.5, 15 ng) and [D-Pen(2,5)]enkephalin (2, 10 microg) in the dose-related manner in the formalin test. NG-Nitroarginine Methyl Ester 14-48 proenkephalin Rattus norvegicus 183-193 9221929-0 1997 The effect of cycloheximide on the regulation of proenkephalin and prodynorphin gene expressions induced by kainic acid in rat hippocampus. Cycloheximide 14-27 proenkephalin Rattus norvegicus 49-62 9263604-7 1997 Pronounced increases in enkephalin neuropeptide synthesis in immature CA3 neurons may reduce glutamate release presynaptically and also prevent voltage-gated Ca2+ uptake into these neurons despite recurrent seizure activity. Glutamic Acid 93-102 proenkephalin Rattus norvegicus 24-34 9262159-7 1997 In contrast to the effects of excitatory amino acid injections, microinjections of the mu-opioid agonist ([D-Ala2,N-Me-Phe4,Gly-ol5]enkephalin) evoked hypertension and tachycardia at approximately 50% of sites. [d-ala2,n-me-phe4 106-123 proenkephalin Rattus norvegicus 132-142 9307110-5 1997 Two selective mu-agonists, [N-MePhe3, D-Pro4]-morphiceptin and [D-Ala2, N-MePhe4, Gly-ol5]-enkephalin, induced dose-dependent inhibition of NMDA EPSCs in a concentration range of 0.3-10 microM. -ala2 65-70 proenkephalin Rattus norvegicus 91-101 9307110-5 1997 Two selective mu-agonists, [N-MePhe3, D-Pro4]-morphiceptin and [D-Ala2, N-MePhe4, Gly-ol5]-enkephalin, induced dose-dependent inhibition of NMDA EPSCs in a concentration range of 0.3-10 microM. n-mephe4 72-80 proenkephalin Rattus norvegicus 91-101 9307110-5 1997 Two selective mu-agonists, [N-MePhe3, D-Pro4]-morphiceptin and [D-Ala2, N-MePhe4, Gly-ol5]-enkephalin, induced dose-dependent inhibition of NMDA EPSCs in a concentration range of 0.3-10 microM. gly-ol5 82-89 proenkephalin Rattus norvegicus 91-101 9307110-5 1997 Two selective mu-agonists, [N-MePhe3, D-Pro4]-morphiceptin and [D-Ala2, N-MePhe4, Gly-ol5]-enkephalin, induced dose-dependent inhibition of NMDA EPSCs in a concentration range of 0.3-10 microM. N-Methylaspartate 140-144 proenkephalin Rattus norvegicus 91-101 9261811-2 1997 Enkephalin-immunoreactive boutons were found to be presynaptic to GABA-immunoreactive postsynaptic profiles, establishing type 2 symmetrical synapses on GABA-positive cell bodies and dendritic shafts in strata radiatum and lacunosum moleculare of the CA1 region. gamma-Aminobutyric Acid 66-70 proenkephalin Rattus norvegicus 0-10 9261811-2 1997 Enkephalin-immunoreactive boutons were found to be presynaptic to GABA-immunoreactive postsynaptic profiles, establishing type 2 symmetrical synapses on GABA-positive cell bodies and dendritic shafts in strata radiatum and lacunosum moleculare of the CA1 region. gamma-Aminobutyric Acid 153-157 proenkephalin Rattus norvegicus 0-10 9221919-10 1997 In fetal alcohol-exposed (FAE) female rats, the number of cells that expressed PE mRNA did not increase following estrogen treatment at any age. Alcohols 9-16 proenkephalin Rattus norvegicus 79-81 9221919-12 1997 Overall, these data indicate that the estrogen responsiveness of PE mRNA expression in the VMN declines with age and, furthermore, prenatal exposure to alcohol blunts estrogen"s effects on PE mRNA expression in the adult VMN. Alcohols 152-159 proenkephalin Rattus norvegicus 65-67 9221929-0 1997 The effect of cycloheximide on the regulation of proenkephalin and prodynorphin gene expressions induced by kainic acid in rat hippocampus. Kainic Acid 108-119 proenkephalin Rattus norvegicus 49-62 9221919-12 1997 Overall, these data indicate that the estrogen responsiveness of PE mRNA expression in the VMN declines with age and, furthermore, prenatal exposure to alcohol blunts estrogen"s effects on PE mRNA expression in the adult VMN. Alcohols 152-159 proenkephalin Rattus norvegicus 189-191 9221929-1 1997 The effect of cycloheximide (CHX), a protein synthesis inhibitor, on the regulation of proenkephalin (proENK) and prodynorphin (proDYN) mRNA levels, proto-oncogenes, such as c-fos, 35-kDa fra and c-jun mRNA, and the levels of their products induced by kainic acid (KA) in rat hippocampus was studied. Cycloheximide 14-27 proenkephalin Rattus norvegicus 87-100 9221929-1 1997 The effect of cycloheximide (CHX), a protein synthesis inhibitor, on the regulation of proenkephalin (proENK) and prodynorphin (proDYN) mRNA levels, proto-oncogenes, such as c-fos, 35-kDa fra and c-jun mRNA, and the levels of their products induced by kainic acid (KA) in rat hippocampus was studied. Cycloheximide 14-27 proenkephalin Rattus norvegicus 102-108 9221929-1 1997 The effect of cycloheximide (CHX), a protein synthesis inhibitor, on the regulation of proenkephalin (proENK) and prodynorphin (proDYN) mRNA levels, proto-oncogenes, such as c-fos, 35-kDa fra and c-jun mRNA, and the levels of their products induced by kainic acid (KA) in rat hippocampus was studied. Cycloheximide 29-32 proenkephalin Rattus norvegicus 87-100 9221929-5 1997 The elevations of both proENK and proDYN mRNA levels induced by KA were inhibited by pre-administration of CHX (15 mg/kg i.p.). Cycloheximide 107-110 proenkephalin Rattus norvegicus 23-29 9221930-1 1997 The present study examined the effects of prolonged L-DOPA treatment (6 months) alone or in combination with unilateral 6-hydroxydopamine-induced lesion of the mesostriatal dopaminergic pathway on substance P and enkephalin mRNA expression in the rat neostriatum. Oxidopamine 120-137 proenkephalin Rattus norvegicus 213-223 9221930-6 1997 Topographical analysis revealed that long-term L-DOPA treatment reversed, in fact, both post-lesional enkephalin and substance P responses to 6-hydroxydopamine lesion, in the ventromedial neostriatum, without significantly modified these peptide responses in the dorsolateral neostriatum. Levodopa 47-53 proenkephalin Rattus norvegicus 102-112 9237522-3 1997 Five day treatment with 10 microM morphine increased the conversion to Leu-enkephalin-Arg6 by 370%. Morphine 34-42 proenkephalin Rattus norvegicus 75-85 9237274-8 1997 Among the five peptidase inhibitors, actinonin, thiorphan or bestatin alone potentiated the depressant effect of [Met5]enkephalin, whereas arphamenine B and captopril did not. Thiorphan 48-57 proenkephalin Rattus norvegicus 119-129 9237274-8 1997 Among the five peptidase inhibitors, actinonin, thiorphan or bestatin alone potentiated the depressant effect of [Met5]enkephalin, whereas arphamenine B and captopril did not. ubenimex 61-69 proenkephalin Rattus norvegicus 119-129 9237274-10 1997 Among the five peptidase inhibitors, actinonin and thiorphan markedly inhibited the [Met5]enkephalin-degrading activity while bestatin was less effective. Thiorphan 51-60 proenkephalin Rattus norvegicus 90-100 9237522-8 1997 The opiate-stimulated dynorphin-converting enzyme (DCE)-activity affects the balance between dynorphin peptides (selective for kappa-opioid receptors) and enkephalin peptides (selective for delta-opioid receptors). Opiate Alkaloids 4-10 proenkephalin Rattus norvegicus 127-165 9227569-3 1997 LE, ME, MEAGL, or MEAP (360 nmol iv) produced an immediate decrease in heart rate, reaching its maximum within 10 s and returning to baseline by 30 s. The blood pressure response for each enkephalin was a small initial decrease followed by a marked and significant increase (P < 0.05 for MEAP). Tyr-gly-gly-phe-met-arg-gly-leu 8-13 proenkephalin Rattus norvegicus 188-198 9221949-6 1997 Activation of protein kinases A and C with 8Br.cAMP and tetradecanoylphorbolacetate, respectively, enhanced the PEnk gene expression only during the G1 phase. 8-Bromoadenosine 5'-monophosphate 43-46 proenkephalin Rattus norvegicus 112-116 9221949-6 1997 Activation of protein kinases A and C with 8Br.cAMP and tetradecanoylphorbolacetate, respectively, enhanced the PEnk gene expression only during the G1 phase. Cyclic AMP 47-51 proenkephalin Rattus norvegicus 112-116 9221949-6 1997 Activation of protein kinases A and C with 8Br.cAMP and tetradecanoylphorbolacetate, respectively, enhanced the PEnk gene expression only during the G1 phase. Tetradecanoylphorbol Acetate 56-83 proenkephalin Rattus norvegicus 112-116 9227569-3 1997 LE, ME, MEAGL, or MEAP (360 nmol iv) produced an immediate decrease in heart rate, reaching its maximum within 10 s and returning to baseline by 30 s. The blood pressure response for each enkephalin was a small initial decrease followed by a marked and significant increase (P < 0.05 for MEAP). meap 18-22 proenkephalin Rattus norvegicus 188-198 9227569-3 1997 LE, ME, MEAGL, or MEAP (360 nmol iv) produced an immediate decrease in heart rate, reaching its maximum within 10 s and returning to baseline by 30 s. The blood pressure response for each enkephalin was a small initial decrease followed by a marked and significant increase (P < 0.05 for MEAP). meap 291-295 proenkephalin Rattus norvegicus 188-198 9195296-0 1997 Central regulation of urine production by a selective mu-opioid agonist, [D-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin, in rats. [d-ala2, n-me-phe4 73-91 proenkephalin Rattus norvegicus 102-112 9175891-4 1997 Met-enkephalin (ENK) suppressed spontaneous and NMDA-induced GABAergic inhibitory PSCs. N-Methylaspartate 48-52 proenkephalin Rattus norvegicus 0-14 9175891-4 1997 Met-enkephalin (ENK) suppressed spontaneous and NMDA-induced GABAergic inhibitory PSCs. N-Methylaspartate 48-52 proenkephalin Rattus norvegicus 16-19 9175891-6 1997 ENK also suppressed spontaneous and NMDA-induced glutamatergic excitatory PSCs. N-Methylaspartate 36-40 proenkephalin Rattus norvegicus 0-3 9175891-8 1997 Consistent with the reduction in PSCs, ENK inhibited/hyperpolarized the great majority (81%) of non-serotonergic neurons recorded extra- and intracellularly in the DRN; the ENK effect reversed polarity at -99 +/- 9 mV, close to the potassium reversal potential. Potassium 232-241 proenkephalin Rattus norvegicus 39-42 9175891-8 1997 Consistent with the reduction in PSCs, ENK inhibited/hyperpolarized the great majority (81%) of non-serotonergic neurons recorded extra- and intracellularly in the DRN; the ENK effect reversed polarity at -99 +/- 9 mV, close to the potassium reversal potential. Potassium 232-241 proenkephalin Rattus norvegicus 173-176 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 196-205 proenkephalin Rattus norvegicus 13-16 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 196-205 proenkephalin Rattus norvegicus 103-106 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 196-205 proenkephalin Rattus norvegicus 103-106 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 273-282 proenkephalin Rattus norvegicus 13-16 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 273-282 proenkephalin Rattus norvegicus 103-106 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Potassium 273-282 proenkephalin Rattus norvegicus 103-106 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Serotonin 296-305 proenkephalin Rattus norvegicus 13-16 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Serotonin 296-305 proenkephalin Rattus norvegicus 103-106 9175891-9 1997 In contrast, ENK inhibited/hyperpolarized only 28% of serotonergic neurons; in the affected cells, the ENK effect, blocked by CTOP, had its reversal potential shifted with change of extracellular potassium in agreement with the value predicted by the Nernst equation for a potassium conductance; serotonin occluded the ENK inhibition. Serotonin 296-305 proenkephalin Rattus norvegicus 103-106 9195296-2 1997 In this study, the effect of [D-Ala2, N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO), a potent selective mu-opioid agonist, microinjected into the SON of anesthetized hydrated rats, on the urine outflow rate was examined. n-me-phe4 38-47 proenkephalin Rattus norvegicus 58-68 9505357-1 1997 Phenylmethylsulfonyl fluoride (PMSF)-inhibited carboxypeptidase (CP) is recently described exopeptidase, that cleaved arginine residues from C-terminal of enkephalin synthetic analogs. Phenylmethylsulfonyl Fluoride 0-29 proenkephalin Rattus norvegicus 155-165 9160247-5 1997 The rank order potencies of the examined compounds revealed that the opioid component of [3H]Met-enkephalin-Arg6-Phe7 recognition site are probably not mu and certainly not kappa 1 sites, whereas these sites are characterized by a kappa 2-like binding profile. Tritium 90-92 proenkephalin Rattus norvegicus 97-107 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. MERF 284-288 proenkephalin Rattus norvegicus 241-251 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. MERF 284-288 proenkephalin Rattus norvegicus 349-359 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. Morphine 361-369 proenkephalin Rattus norvegicus 241-251 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. Morphine 361-369 proenkephalin Rattus norvegicus 349-359 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. Naloxone 374-382 proenkephalin Rattus norvegicus 241-251 9160247-7 1997 A number of the heterologous competition curves could be described by a high-affinity stereospecific component and a substantially lower-affinity binding element, which could completely be displaced with several peptide ligands such as Met5-enkephalin, dynorphin(1-13), and unlabeled MERF but not by other compounds such as [D-Ala2-(Me)Phe4-Gly5-ol]enkephalin, morphine, or naloxone. Naloxone 374-382 proenkephalin Rattus norvegicus 349-359 9160247-8 1997 [3H]Met-enkephalin-Arg6-Phe7 binding can also be inhibited by FMRF-amide analogs and sigma receptor ligands, such as (+)N-allyl-normetazocine and haloperidol, although with moderate affinity. Tritium 1-3 proenkephalin Rattus norvegicus 8-18 9160247-8 1997 [3H]Met-enkephalin-Arg6-Phe7 binding can also be inhibited by FMRF-amide analogs and sigma receptor ligands, such as (+)N-allyl-normetazocine and haloperidol, although with moderate affinity. Amides 67-72 proenkephalin Rattus norvegicus 8-18 9505357-1 1997 Phenylmethylsulfonyl fluoride (PMSF)-inhibited carboxypeptidase (CP) is recently described exopeptidase, that cleaved arginine residues from C-terminal of enkephalin synthetic analogs. Phenylmethylsulfonyl Fluoride 31-35 proenkephalin Rattus norvegicus 155-165 9160247-8 1997 [3H]Met-enkephalin-Arg6-Phe7 binding can also be inhibited by FMRF-amide analogs and sigma receptor ligands, such as (+)N-allyl-normetazocine and haloperidol, although with moderate affinity. SK and F 10047 120-141 proenkephalin Rattus norvegicus 8-18 9505357-1 1997 Phenylmethylsulfonyl fluoride (PMSF)-inhibited carboxypeptidase (CP) is recently described exopeptidase, that cleaved arginine residues from C-terminal of enkephalin synthetic analogs. Arginine 118-126 proenkephalin Rattus norvegicus 155-165 9160247-8 1997 [3H]Met-enkephalin-Arg6-Phe7 binding can also be inhibited by FMRF-amide analogs and sigma receptor ligands, such as (+)N-allyl-normetazocine and haloperidol, although with moderate affinity. Haloperidol 146-157 proenkephalin Rattus norvegicus 8-18 9103499-0 1997 Antinociceptive effects of RB101, a complete inhibitor of enkephalin-catabolizing enzymes, are enhanced by a cholecystokinin type B receptor antagonist, as revealed by noxiously evoked spinal c-Fos expression in rats. RB 101 27-32 proenkephalin Rattus norvegicus 58-68 9037496-1 1997 We recently described ultrastructural evidence for morphologically heterogeneous axon terminals containing the endogenous opioid peptide, methionine5-enkephalin (ENK), that formed synapses with neurons containing the catecholamine synthesizing enzyme, tyrosine hydroxylase, in the locus coeruleus (LC) of the rat brain. Catecholamines 217-230 proenkephalin Rattus norvegicus 138-160 9150287-4 1997 (D-Ala2,N-Methyl-Phe4,Gly-ol5)-enkephalin (DAMGO) and DYN-(1-17). n-methyl-phe4 8-21 proenkephalin Rattus norvegicus 31-41 9150287-4 1997 (D-Ala2,N-Methyl-Phe4,Gly-ol5)-enkephalin (DAMGO) and DYN-(1-17). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 43-48 proenkephalin Rattus norvegicus 31-41 9046008-0 1997 Kainic acid-induced sprouting of dynorphin- and enkephalin-containing mossy fibers in the dentate gyrus of the rat hippocampus. Kainic Acid 0-11 proenkephalin Rattus norvegicus 48-58 9046008-1 1997 This study utilized Timm histochemistry and immunocytochemistry to determine the prolonged effects of kainic acid on the distribution of dynorphin- and enkephalin-containing mossy fibers in the rat dentate gyrus at progressive time points following kainic acid injection. Kainic Acid 102-113 proenkephalin Rattus norvegicus 152-162 9046008-2 1997 Beginning 1-2 weeks after kainic acid administration, a progressive increase in the distribution and intensity of staining for supragranular zinc, dynorphin and enkephalin was observed in the dentate gyrus. Kainic Acid 26-37 proenkephalin Rattus norvegicus 161-171 9046008-3 1997 The kainic acid-induced sprouting of mossy fibers containing dynorphin and enkephalin strongly resembles the pattern observed in the dentate gyrus of humans with temporal lobe epilepsy. Kainic Acid 4-15 proenkephalin Rattus norvegicus 75-85 9088567-4 1997 Puromycin-sensitive soluble and membrane-bound aminopeptidase activities decrease in the synaptosomal and mitochondrial fractions at the end of the first month of life, just when enkephalin-like immunoreactivity decreases in the cerebellum. Puromycin 0-9 proenkephalin Rattus norvegicus 179-189 9037496-1 1997 We recently described ultrastructural evidence for morphologically heterogeneous axon terminals containing the endogenous opioid peptide, methionine5-enkephalin (ENK), that formed synapses with neurons containing the catecholamine synthesizing enzyme, tyrosine hydroxylase, in the locus coeruleus (LC) of the rat brain. Catecholamines 217-230 proenkephalin Rattus norvegicus 162-165 9037496-8 1997 Approximately 38% (n = 76) of the axon terminals containing ENK immunoreactivity (n = 200) also contained GABA. gamma-Aminobutyric Acid 106-110 proenkephalin Rattus norvegicus 60-63 9037496-10 1997 Finally, a few ENK-labeled axon terminals (14%; n = 28) formed asymmetric (excitatory-type) synapses with dendrites containing gold-silver labeling for GABA. gamma-Aminobutyric Acid 152-156 proenkephalin Rattus norvegicus 15-18 9032693-4 1997 Methionine enkephalin (ME; 10 microM) inhibited evoked GABAergic inhibitory postsynaptic currents (IPSCs) by 57%, non-NMDA excitatory postsynaptic currents (EPSCs) by 60%, and NMDA EPSCs by 43% in PAG neurones. N-Methylaspartate 176-180 proenkephalin Rattus norvegicus 11-21 9032693-4 1997 Methionine enkephalin (ME; 10 microM) inhibited evoked GABAergic inhibitory postsynaptic currents (IPSCs) by 57%, non-NMDA excitatory postsynaptic currents (EPSCs) by 60%, and NMDA EPSCs by 43% in PAG neurones. pag 197-200 proenkephalin Rattus norvegicus 11-21 8978929-1 1997 Our laboratory has previously demonstrated that specific activation of mu-opioid receptors in the medial preoptic-anterior hypothalamic area with [D-Ala2, N Me-Phe4, Gly-ol5]-enkephalin (DAGO) suppresses luteinizing hormone secretion in the ovariectomized rat [29]. [d-ala2, n me-phe4 146-164 proenkephalin Rattus norvegicus 175-185 9139581-5 1997 The LTD induced by high strength tetanic stimulation was clearly blocked by the opioid antagonist naloxone (1 microM); however, the N-methyl-D-aspartate (NMDA) receptor antagonist D-2-amino-5-phosphonopentanoate (AP5; 50 microM) had no effect on the LTD. Our data suggest that the strong stimulation used for LTD induction may have activated other afferent fiber systems and/or local interneurons in addition to SCC fibers, such as the enkephalin-containing terminals of the perforant path (PP) projecting to the stratum lacunosum moleculare or opioid peptide-containing interneurons. Naloxone 98-106 proenkephalin Rattus norvegicus 436-446 9227847-0 1997 Effect of morphine on proenkephalin gene expression in the rat brain. Morphine 10-18 proenkephalin Rattus norvegicus 22-35 9227847-3 1997 Therefore, in situ hybridization with probes directed against intronic sequences to measure the primary transcript of proenkephalin (PPE) mRNA (heteronucleic RNA, hnRNA) in the rat brain following morphine administration was used in this study. Morphine 197-205 proenkephalin Rattus norvegicus 118-131 9395259-0 1997 Interaction mechanisms of imipramine and desipramine with enkephalin-degrading aminopeptidases in vitro. Imipramine 26-36 proenkephalin Rattus norvegicus 58-68 9097028-1 1997 We examined the effects of diminished serotonin (5-hydroxytryptamine, 5-HT) levels on the postnatal development of striatal tachykinin and enkephalin neuropeptide systems. Serotonin 38-47 proenkephalin Rattus norvegicus 139-149 8987732-2 1997 Therefore, we investigated the effects of the selective mu-opioid receptor agonist [D-Ala2-N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO) on membrane properties of rat NAcc neurons and on events mediated by NMDA and non-NMDA glutamate receptors, using intracellular recording in a brain slice preparation. [d-ala2-n-me-phe4 83-100 proenkephalin Rattus norvegicus 110-120 9395259-0 1997 Interaction mechanisms of imipramine and desipramine with enkephalin-degrading aminopeptidases in vitro. Desipramine 41-52 proenkephalin Rattus norvegicus 58-68 9395259-3 1997 In this sense, imipramine treatment in vivo increases the enkephalin levels, and this effect is enhanced by inhibitors of enkephalin-degrading enzymes. Imipramine 15-25 proenkephalin Rattus norvegicus 58-68 9395259-3 1997 In this sense, imipramine treatment in vivo increases the enkephalin levels, and this effect is enhanced by inhibitors of enkephalin-degrading enzymes. Imipramine 15-25 proenkephalin Rattus norvegicus 122-132 9395259-4 1997 The present work shows the effects in vitro of imipramine and its active metabolite desipramine on the activities of two membrane-bound enkephalin-degrading aminopeptidases present in rat brain. Imipramine 47-57 proenkephalin Rattus norvegicus 136-146 9395259-4 1997 The present work shows the effects in vitro of imipramine and its active metabolite desipramine on the activities of two membrane-bound enkephalin-degrading aminopeptidases present in rat brain. Desipramine 84-95 proenkephalin Rattus norvegicus 136-146 9437722-0 1997 Binding of [3H][D-Ala2, MePhe4, Gly-ol5] enkephalin, [3H][D-Pen2, D-Pen5]enkephalin, and [3H]U-69,593 to airway and pulmonary tissues of normal and sensitized rats. Tritium 12-14 proenkephalin Rattus norvegicus 41-51 9244374-0 1997 delta-9-Tetrahydrocannabinol increases prodynorphin and proenkephalin gene expression in the spinal cord of the rat. Dronabinol 0-28 proenkephalin Rattus norvegicus 56-69 9244374-2 1997 The effect of five days treatment with delta-9-tetrahydrocannabinol (THC) was examined on prodynorphin (PDYN) and proenkephalin (PENK) gene expression in the spinal cord of male rats. Dronabinol 39-67 proenkephalin Rattus norvegicus 114-127 9244374-2 1997 The effect of five days treatment with delta-9-tetrahydrocannabinol (THC) was examined on prodynorphin (PDYN) and proenkephalin (PENK) gene expression in the spinal cord of male rats. Dronabinol 39-67 proenkephalin Rattus norvegicus 129-133 9244374-2 1997 The effect of five days treatment with delta-9-tetrahydrocannabinol (THC) was examined on prodynorphin (PDYN) and proenkephalin (PENK) gene expression in the spinal cord of male rats. Dronabinol 69-72 proenkephalin Rattus norvegicus 114-127 9244374-2 1997 The effect of five days treatment with delta-9-tetrahydrocannabinol (THC) was examined on prodynorphin (PDYN) and proenkephalin (PENK) gene expression in the spinal cord of male rats. Dronabinol 69-72 proenkephalin Rattus norvegicus 129-133 8946057-8 1996 These results indicate a role for preganglionic fibres in the developmental regulation of ENK in the chromaffin cells. chromaffin 101-111 proenkephalin Rattus norvegicus 90-93 9596974-9 1997 The content of Leu-ENK in muscle tissue decreased. Leucine 15-18 proenkephalin Rattus norvegicus 19-22 8938736-7 1996 Oxygen interruption during application of either baclofen (n = 6) or (D-Ala2-N-Me-Phe,Gly-ol)enkephalin (n = 4) blocked the depressant action of both drugs on the field inhibitory postsynaptic potential. Oxygen 0-6 proenkephalin Rattus norvegicus 93-103 8938736-7 1996 Oxygen interruption during application of either baclofen (n = 6) or (D-Ala2-N-Me-Phe,Gly-ol)enkephalin (n = 4) blocked the depressant action of both drugs on the field inhibitory postsynaptic potential. (d-ala2-n-me-phe 69-85 proenkephalin Rattus norvegicus 93-103 9037536-8 1996 This result is of major interest in comparison with our previous finding that NMDA receptor activation is necessary to maintain the up-regulation of enkephalin expression in the striatum after dopamine lesion. Dopamine 193-201 proenkephalin Rattus norvegicus 149-159 8931456-0 1996 AP-1-related proteins bind to the enkephalin CRE-2 element in adrenal chromaffin cells. chromaffin 70-80 proenkephalin Rattus norvegicus 34-44 8938629-4 1996 In adult male rats with cholestasis due to BDR, the concentrations of three proenkephalin-derived opioid peptides were increased. bis-2,4-dinitrobenzenesulfonyl rhodamine 43-46 proenkephalin Rattus norvegicus 76-89 8947949-1 1996 Previous results have shown that treatment of rats with morphine during the neonatal period can influence development of peptide transport system-1 (PTS-1), the blood-brain barrier transport system for Tyr-MIF-1 and methionine enkephalin. Morphine 56-64 proenkephalin Rattus norvegicus 227-237 8930337-6 1996 The effect of met-enk was blocked by the selective delta-opioid receptor antagonist naltrindole (500 nM). naltrindole 84-95 proenkephalin Rattus norvegicus 18-21 8947492-3 1996 With membranes from both clones, the opioid agonist [D-Ala2]leucine enkephalin (DADLE) caused stimulation of high-affinity GTPase activity and of the binding of guanosine 5"-[gamma-[35S]thio]triphosphate, and inhibition of forskolin-amplified adenylate cyclase activity. guanosine 5"-[gamma-[35s]thio]triphosphate 161-203 proenkephalin Rattus norvegicus 68-78 8947492-3 1996 With membranes from both clones, the opioid agonist [D-Ala2]leucine enkephalin (DADLE) caused stimulation of high-affinity GTPase activity and of the binding of guanosine 5"-[gamma-[35S]thio]triphosphate, and inhibition of forskolin-amplified adenylate cyclase activity. Colforsin 223-232 proenkephalin Rattus norvegicus 68-78 8958779-3 1996 Daily injection of alpha-FMH (20 mg/kg, s.c.) in pups of either sex, from birth until 10 days of age, caused a significant increase in baseline plasma GH and potentiated the GH response to the [Met5]-enkephalin analog FK 33-824 (1 mg/kg, s.c.) administered 3 h after the last alpha-FMH injection. alpha-fluoromethylhistidine 19-28 proenkephalin Rattus norvegicus 200-210 8930296-11 1996 Although naloxone applied iontophoretically blocked or reduced the peak inhibitory effect of [D-Ala2,N-Me-Phe4, Gly5-ol]-Enkephalin (DAMGO) or trans-(+/-)-3,4-dicholoro-N-methyl-N-(2-1-pyrrolidinyl-cyclo hexyl)-benzene acetamide (U50, 488H), it did not produce a significant alteration in the peak inhibitory effect of nociceptin. Naloxone 9-17 proenkephalin Rattus norvegicus 121-131 8930296-11 1996 Although naloxone applied iontophoretically blocked or reduced the peak inhibitory effect of [D-Ala2,N-Me-Phe4, Gly5-ol]-Enkephalin (DAMGO) or trans-(+/-)-3,4-dicholoro-N-methyl-N-(2-1-pyrrolidinyl-cyclo hexyl)-benzene acetamide (U50, 488H), it did not produce a significant alteration in the peak inhibitory effect of nociceptin. [d-ala2,n-me-phe4 93-110 proenkephalin Rattus norvegicus 121-131 8896810-1 1996 Effect of a mu-opioid agonist (D-Ala2,N-MePhe4,Gly5-ol-enkephalin, DAGO), on glycine (Gly)-induced chloride current (IGly) was investigated in the periaqueductal gray (PAG) neurons acutely dissociated 1-2-week-old Wistar rats by the use of nystatin-perforated patch recording configuration under voltage-clamp condition. Glycine 77-84 proenkephalin Rattus norvegicus 55-65 8863841-4 1996 GH3MOR cells, further transfected with mouse delta receptor cDNA (termed GH3MORDOR cells), bound both [D-Ala2,N-MePhe4,Gly-ol5]enkephalin (DAMGO) and [D-Pen2,D-Pen5]enkephalin (DPDPE). [d-ala2,n-mephe4, 102-119 proenkephalin Rattus norvegicus 127-137 8923515-1 1996 The regulation of proenkephalin (proENK) mRNA levels by cAMP and protein kinase C (PKC) pathways was studied in cultured rat spinal cord cells in the present study. Cyclic AMP 56-60 proenkephalin Rattus norvegicus 18-31 8923515-1 1996 The regulation of proenkephalin (proENK) mRNA levels by cAMP and protein kinase C (PKC) pathways was studied in cultured rat spinal cord cells in the present study. Cyclic AMP 56-60 proenkephalin Rattus norvegicus 33-39 8923515-4 1996 The proENK mRNA level began to increase within an hour, then reached and remained at a peak 3-12 h after stimulation by both forskolin and PMA. Colforsin 125-134 proenkephalin Rattus norvegicus 4-10 8923515-4 1996 The proENK mRNA level began to increase within an hour, then reached and remained at a peak 3-12 h after stimulation by both forskolin and PMA. Tetradecanoylphorbol Acetate 139-142 proenkephalin Rattus norvegicus 4-10 8923515-5 1996 The increased proENK mRNA level in forskolin-treated cells was slightly decreased 24 h after the stimulation, whereas the level of proENK mRNA returned to basal levels in PMA-treated cells. Colforsin 35-44 proenkephalin Rattus norvegicus 14-20 8923515-5 1996 The increased proENK mRNA level in forskolin-treated cells was slightly decreased 24 h after the stimulation, whereas the level of proENK mRNA returned to basal levels in PMA-treated cells. Tetradecanoylphorbol Acetate 171-174 proenkephalin Rattus norvegicus 131-137 8923515-10 1996 Our results suggest that the elevation of proENK mRNA levels in the spinal cord is regulated by both cAMP and PKC pathways. Cyclic AMP 101-105 proenkephalin Rattus norvegicus 42-48 8923515-11 1996 Calcium influx through both L- and N-type calcium channels, calmodulin and Ca2+/calmodulin-dependent protein kinase II appear to be involved in the increase of proENK mRNA levels induced by either forskolin or PMA. Calcium 0-7 proenkephalin Rattus norvegicus 160-166 8923515-11 1996 Calcium influx through both L- and N-type calcium channels, calmodulin and Ca2+/calmodulin-dependent protein kinase II appear to be involved in the increase of proENK mRNA levels induced by either forskolin or PMA. Colforsin 197-206 proenkephalin Rattus norvegicus 160-166 8923515-11 1996 Calcium influx through both L- and N-type calcium channels, calmodulin and Ca2+/calmodulin-dependent protein kinase II appear to be involved in the increase of proENK mRNA levels induced by either forskolin or PMA. Tetradecanoylphorbol Acetate 210-213 proenkephalin Rattus norvegicus 160-166 8872371-2 1996 The dual inhibitor of enkephalin degrading enzymes, RB 101, is able to block endogenous enkephalin metabolism completely, leading to potent antinociceptive responses potentiated by blockade of CCKB receptors. RB 101 52-58 proenkephalin Rattus norvegicus 22-32 8899738-8 1996 In addition, antisera to [Leu5]enkephalin, but not to [Met5]enkephalin, also blocked the antiallodynic action of thiorphan plus L365,260. Thiorphan 113-122 proenkephalin Rattus norvegicus 31-41 8899738-8 1996 In addition, antisera to [Leu5]enkephalin, but not to [Met5]enkephalin, also blocked the antiallodynic action of thiorphan plus L365,260. 3-(4-Fluorophenoxy)propionic acid 128-132 proenkephalin Rattus norvegicus 31-41 8899738-9 1996 These data suggest that blockade of CCKB receptors may enhance the actions or availability of endogenous [Leu5]enkephalin or a like substance which can elicit a significant antiallodynic action via opioid delta receptors when its degradation is by inhibited by thiorphan. Thiorphan 261-270 proenkephalin Rattus norvegicus 111-121 8872371-2 1996 The dual inhibitor of enkephalin degrading enzymes, RB 101, is able to block endogenous enkephalin metabolism completely, leading to potent antinociceptive responses potentiated by blockade of CCKB receptors. RB 101 52-58 proenkephalin Rattus norvegicus 88-98 8752139-0 1996 The dual peptidase inhibitor RB101 induces a long-lasting increase in the extracellular level of Met-enkephalin-like material in the nucleus accumbens of freely moving rats. RB 101 29-34 proenkephalin Rattus norvegicus 101-111 8752139-4 1996 Perfusion of KCI (100 mM) produced a 17-fold increase in the level of Met-enkephalin-like material in this structure. kci 13-16 proenkephalin Rattus norvegicus 74-84 8752139-6 1996 Intraperitoneal injection of RB101 induced a dose-dependent and long-lasting (210-min) increase in the extracellular levels of Met-enkephalin-like material. RB 101 29-34 proenkephalin Rattus norvegicus 131-141 8883887-0 1996 Effect of low and high doses of nitrous oxide on preproenkephalin mRNA and its peptide methionine enkephalin levels in the hypothalamus. Nitrous Oxide 32-45 proenkephalin Rattus norvegicus 55-65 8890319-5 1996 Administration of [D-Ala2, N-Me-Phe4,Gly5-ol]-Enkephalin, a selective mu-opioid receptor agonist, reduced the NMDA-evoked responses in 77% of trigeminothalamic neurons. n-me-phe4 27-36 proenkephalin Rattus norvegicus 46-56 8890319-5 1996 Administration of [D-Ala2, N-Me-Phe4,Gly5-ol]-Enkephalin, a selective mu-opioid receptor agonist, reduced the NMDA-evoked responses in 77% of trigeminothalamic neurons. N-Methylaspartate 110-114 proenkephalin Rattus norvegicus 46-56 8890319-6 1996 [D-Pen2,5]-Enkephalin, a selective delta-opioid receptor agonist, produced inhibition of NMDA-evoked responses in 36% of neurons. N-Methylaspartate 89-93 proenkephalin Rattus norvegicus 11-56 8883854-5 1996 Haloperidol increased most oral behaviors including licking, chewing and biting as well as striatal enkephalin and somatostatin levels. Haloperidol 0-11 proenkephalin Rattus norvegicus 100-110 8883854-8 1996 Neither DA agonist alone, nor their combination, reduced the haloperidol-induced increase in enkephalin levels. Haloperidol 61-72 proenkephalin Rattus norvegicus 93-103 8843088-1 1996 The expression of enkephalin in neurons of the rat forebrain was studied by in situ hybridization and immunohistochemistry after unilateral injections of ibotenic acid into the bed nucleus of the stria terminalis. Ibotenic Acid 154-167 proenkephalin Rattus norvegicus 18-28 8843088-2 1996 Initially, we observed that the destruction of nerve cell bodies in this nucleus resulted in a prominent bilateral increase in the number of neuronal perikarya immunoreactive for [Met]enkephalin in the lateral/basolateral amygdaloid complex-especially in the anterior division of the latter nucleus-as compared with NaCl-injected rats. Sodium Chloride 316-320 proenkephalin Rattus norvegicus 184-194 8883887-7 1996 Similarly, the concentration of methionine enkephalin was significantly higher after 24 and 48 h of exposure of N2O than after exposure to 12 h of N2O or air. Nitrous Oxide 112-115 proenkephalin Rattus norvegicus 43-53 8883887-7 1996 Similarly, the concentration of methionine enkephalin was significantly higher after 24 and 48 h of exposure of N2O than after exposure to 12 h of N2O or air. Nitrous Oxide 147-150 proenkephalin Rattus norvegicus 43-53 8883887-8 1996 These results indicate that (a) exposure to N2O results in significant elevations in preproenkephalin mRNA levels, (b) the increased preproenkephalin mRNA levels appear to be proportional to the concentration of N2O exposure as well as the duration of N2O exposure, and (c) N2O-induced elevation in preproenkephalin mRNA levels is associated with corresponding increase in tissue concentrations of methionine enkephalin. Nitrous Oxide 44-47 proenkephalin Rattus norvegicus 91-101 8883887-8 1996 These results indicate that (a) exposure to N2O results in significant elevations in preproenkephalin mRNA levels, (b) the increased preproenkephalin mRNA levels appear to be proportional to the concentration of N2O exposure as well as the duration of N2O exposure, and (c) N2O-induced elevation in preproenkephalin mRNA levels is associated with corresponding increase in tissue concentrations of methionine enkephalin. Nitrous Oxide 212-215 proenkephalin Rattus norvegicus 91-101 8883887-8 1996 These results indicate that (a) exposure to N2O results in significant elevations in preproenkephalin mRNA levels, (b) the increased preproenkephalin mRNA levels appear to be proportional to the concentration of N2O exposure as well as the duration of N2O exposure, and (c) N2O-induced elevation in preproenkephalin mRNA levels is associated with corresponding increase in tissue concentrations of methionine enkephalin. Nitrous Oxide 212-215 proenkephalin Rattus norvegicus 91-101 8883887-8 1996 These results indicate that (a) exposure to N2O results in significant elevations in preproenkephalin mRNA levels, (b) the increased preproenkephalin mRNA levels appear to be proportional to the concentration of N2O exposure as well as the duration of N2O exposure, and (c) N2O-induced elevation in preproenkephalin mRNA levels is associated with corresponding increase in tissue concentrations of methionine enkephalin. Nitrous Oxide 212-215 proenkephalin Rattus norvegicus 91-101 8883887-9 1996 In total, these results suggest that N2O selectively stimulates synthesis of methionine enkephalin in the diencephalic region of the brain. Nitrous Oxide 37-40 proenkephalin Rattus norvegicus 88-98 8883890-0 1996 Dexamethasone and forskolin synergistically increase [Met5]enkephalin accumulation in mixed brain cell cultures. Dexamethasone 0-13 proenkephalin Rattus norvegicus 59-69 8883890-0 1996 Dexamethasone and forskolin synergistically increase [Met5]enkephalin accumulation in mixed brain cell cultures. Colforsin 18-27 proenkephalin Rattus norvegicus 59-69 8889834-0 1996 Reversible affinity labeling of opioid receptors via disulfide bonding: discriminative labeling of mu and delta subtypes by chemically activated thiol-containing enkephalin analogs. Disulfides 53-62 proenkephalin Rattus norvegicus 162-172 8921265-1 1996 This study compared the effects of unilateral and bilateral 6-hydroxydopamine-induced lesions of the nigrostriatal dopaminergic neurons on substance P and enkephalin expression in the rat striatum and its main target structures by means of quantitative in situ hybridization and immunocytochemistry. Oxidopamine 60-77 proenkephalin Rattus norvegicus 155-165 8889834-0 1996 Reversible affinity labeling of opioid receptors via disulfide bonding: discriminative labeling of mu and delta subtypes by chemically activated thiol-containing enkephalin analogs. Sulfhydryl Compounds 145-150 proenkephalin Rattus norvegicus 162-172 8889834-7 1996 When enkephalin-bound rat membranes were treated with dithiothreitol, the loss of receptors was reversed, depending upon the concentration of and incubation time with dithiothreitol. Dithiothreitol 54-68 proenkephalin Rattus norvegicus 5-15 8889834-7 1996 When enkephalin-bound rat membranes were treated with dithiothreitol, the loss of receptors was reversed, depending upon the concentration of and incubation time with dithiothreitol. Dithiothreitol 167-181 proenkephalin Rattus norvegicus 5-15 8799893-15 1996 The mu-opioid receptor agonist (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO, 10 microM) which inhibits GABA release from interneurons, prevented the occurrence of both GABA-mediated synchronous potentials and subsequent ictal discharges (n = 6) as well as the [K+]o elevations. n-me-phe4 39-48 proenkephalin Rattus norvegicus 58-68 8836576-4 1996 Morphine and D-Ala2,D-Leu5-enkephalin (DADLE) had a comparable inhibitory potency with a maximal effect at 1 mM concentration, while both naltrexone and naltrindole antagonized their effect at only 10 nM. Naltrexone 138-148 proenkephalin Rattus norvegicus 27-37 8836576-4 1996 Morphine and D-Ala2,D-Leu5-enkephalin (DADLE) had a comparable inhibitory potency with a maximal effect at 1 mM concentration, while both naltrexone and naltrindole antagonized their effect at only 10 nM. naltrindole 153-164 proenkephalin Rattus norvegicus 27-37 8836576-5 1996 D-Ala2-MePhe4,Gly-ol5-enkephalin (DAMGO) showed only a transient inhibitory effect. d-ala2-mephe4 0-13 proenkephalin Rattus norvegicus 22-32 8841942-5 1996 [D-Ala2,D-Leu5]enkephalin (DADLE), a specific delta-agonist, had no inhibition on the binding of [3H]U69593, but displaced the binding of [3H]bremazocine at higher concentrations (10(-5)-10(-6)M). Tritium 139-141 proenkephalin Rattus norvegicus 15-25 8841942-5 1996 [D-Ala2,D-Leu5]enkephalin (DADLE), a specific delta-agonist, had no inhibition on the binding of [3H]U69593, but displaced the binding of [3H]bremazocine at higher concentrations (10(-5)-10(-6)M). bremazocine 142-153 proenkephalin Rattus norvegicus 15-25 8841942-9 1996 Met5-Enkephalin-Arg6-Phe7, a specific kappa 2 ligand, displaced the binding of [3H]bremazocine much more readily than the binding of [3H]U69593. Tritium 80-82 proenkephalin Rattus norvegicus 5-15 8841942-9 1996 Met5-Enkephalin-Arg6-Phe7, a specific kappa 2 ligand, displaced the binding of [3H]bremazocine much more readily than the binding of [3H]U69593. bremazocine 83-94 proenkephalin Rattus norvegicus 5-15 8799893-15 1996 The mu-opioid receptor agonist (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO, 10 microM) which inhibits GABA release from interneurons, prevented the occurrence of both GABA-mediated synchronous potentials and subsequent ictal discharges (n = 6) as well as the [K+]o elevations. gamma-Aminobutyric Acid 167-171 proenkephalin Rattus norvegicus 58-68 8784263-5 1996 In the present study we demonstrate that: (i) promoter usage and splicing of PENK mRNA function similarly in mesenteric lymph nodes as in neural cells; (2) PENK expression in mesenteric lymph nodes is modulated by adrenaline via adrenergic receptors; and (3) the adrenergic system participates in the modulation of the LPS induced PENK mRNA expression. Epinephrine 214-224 proenkephalin Rattus norvegicus 77-81 8784263-5 1996 In the present study we demonstrate that: (i) promoter usage and splicing of PENK mRNA function similarly in mesenteric lymph nodes as in neural cells; (2) PENK expression in mesenteric lymph nodes is modulated by adrenaline via adrenergic receptors; and (3) the adrenergic system participates in the modulation of the LPS induced PENK mRNA expression. Epinephrine 214-224 proenkephalin Rattus norvegicus 156-160 8784263-5 1996 In the present study we demonstrate that: (i) promoter usage and splicing of PENK mRNA function similarly in mesenteric lymph nodes as in neural cells; (2) PENK expression in mesenteric lymph nodes is modulated by adrenaline via adrenergic receptors; and (3) the adrenergic system participates in the modulation of the LPS induced PENK mRNA expression. Epinephrine 214-224 proenkephalin Rattus norvegicus 156-160 8799893-15 1996 The mu-opioid receptor agonist (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO, 10 microM) which inhibits GABA release from interneurons, prevented the occurrence of both GABA-mediated synchronous potentials and subsequent ictal discharges (n = 6) as well as the [K+]o elevations. gamma-Aminobutyric Acid 102-106 proenkephalin Rattus norvegicus 58-68 8811420-4 1996 Double labeling experiments showed that nitric oxide synthase-like immunoreactivity coexists with substance P-like immunoreactivity in the medial preoptic area, with oxytocin-, cholecystokinin-and galanin message-associated peptide-like immunoreactivity in the supraoptic nucleus, with enkephalin, oxytocin- and corticotropin releasing factor-like immunoreactivity in the paraventricular nucleus and with enkephalin-like immunoreactivity in the arcuate nucleus. nitric 40-46 proenkephalin Rattus norvegicus 286-296 8811448-1 1996 A novel capillary zone electrophoresis (CZE) assay method was developed to evaluate the systemic disposition of [D-pen2,5]enkephalin (DPDPE) in rats. Enkephalin, D-Penicillamine (2,5)- 134-139 proenkephalin Rattus norvegicus 122-132 8811420-4 1996 Double labeling experiments showed that nitric oxide synthase-like immunoreactivity coexists with substance P-like immunoreactivity in the medial preoptic area, with oxytocin-, cholecystokinin-and galanin message-associated peptide-like immunoreactivity in the supraoptic nucleus, with enkephalin, oxytocin- and corticotropin releasing factor-like immunoreactivity in the paraventricular nucleus and with enkephalin-like immunoreactivity in the arcuate nucleus. nitric 40-46 proenkephalin Rattus norvegicus 405-415 8793092-4 1996 Relative to CHO, ad libitum intake of Fat/Sucrose elevated proDynorphin mRNA levels in the arcuate and Dynorphin A1-17 levels in the paraventricular nucleus (PVN) (P < 0.05), but did not affect arcuate mRNA levels of proEnkephalin or proOpiomelanocortin (POMC), or PVN levels of Met-Enkephalin or beta-Endorphin. Sucrose 42-49 proenkephalin Rattus norvegicus 220-233 8793890-5 1996 administration of the mu-selective peptide [D-Ala2-NMe-Phe4-Gly-ol]-enkephalin (DAMGO) elicited a marked rise in GH secretion, while administration of the delta-agonists [D-pen2D-pen5]-enkephalin (DPDPE) or deltorphin II caused only a minor and non-dose-related rise in GH secretion in neonatal rats. deltorphin II, Ala(2)- 207-220 proenkephalin Rattus norvegicus 68-78 8667193-7 1996 Kd values for 3H-[D-Ala2,N-mephe4,Gly-ol5] enkephalin were unchanged from controls. 3h-[d-ala2, 14-25 proenkephalin Rattus norvegicus 43-53 8813578-3 1996 15 min before the session) had no effect on alcohol drinking, while it attenuated the delta-opioid receptor agonist [D-Pen2, D-Pen5]enkephalin-induced locomotor stimulation. d-pen2 117-123 proenkephalin Rattus norvegicus 132-142 8793092-6 1996 Pair-feeding Fat/Sucrose reduced mRNA levels of proDynorpin, proEnkephalin and POMC, and Dynorphin A1-17 levels, relative to ad libitum feeding of Fat/Sucrose. Sucrose 17-24 proenkephalin Rattus norvegicus 61-74 8813578-3 1996 15 min before the session) had no effect on alcohol drinking, while it attenuated the delta-opioid receptor agonist [D-Pen2, D-Pen5]enkephalin-induced locomotor stimulation. d-pen5 125-131 proenkephalin Rattus norvegicus 132-142 8793092-8 1996 Feeding Fat/Sucrose at 60% of ad libitum intake resulted in mRNA levels of proDynorphin, proEnkephalin and POMC, and Dynorphin A1-17 levels that were similar to those observed in CHO group. Sucrose 12-19 proenkephalin Rattus norvegicus 89-102 8780011-5 1996 Noradrenaline enhanced the levels of proenkephalin mRNA in a concentration-dependent manner. Norepinephrine 0-13 proenkephalin Rattus norvegicus 37-50 8780011-0 1996 Noradrenaline increases the expression of the proenkephalin gene in cultured astroglial cells by acting on beta 1- and alpha 1-adrenoceptors. Norepinephrine 0-13 proenkephalin Rattus norvegicus 46-59 8743739-0 1996 Chronic dizocilpine maleate (MK-801) treatment suppresses the effects of nigrostriatal dopamine deafferentation on enkephalin but not on substance P expression in the rat striatum. Dizocilpine Maleate 8-27 proenkephalin Rattus norvegicus 115-125 8743739-0 1996 Chronic dizocilpine maleate (MK-801) treatment suppresses the effects of nigrostriatal dopamine deafferentation on enkephalin but not on substance P expression in the rat striatum. Dizocilpine Maleate 29-35 proenkephalin Rattus norvegicus 115-125 8743739-0 1996 Chronic dizocilpine maleate (MK-801) treatment suppresses the effects of nigrostriatal dopamine deafferentation on enkephalin but not on substance P expression in the rat striatum. Dopamine 87-95 proenkephalin Rattus norvegicus 115-125 8743739-7 1996 The same chronic treatment with dizocilpine maleate started 12 days after the 6-hydroxydopamine injection suppressed the lesion-induced up-regulation of enkephalin expression without significantly affecting the down-regulation of substance P expression. Dizocilpine Maleate 32-51 proenkephalin Rattus norvegicus 153-163 8743739-7 1996 The same chronic treatment with dizocilpine maleate started 12 days after the 6-hydroxydopamine injection suppressed the lesion-induced up-regulation of enkephalin expression without significantly affecting the down-regulation of substance P expression. Oxidopamine 78-95 proenkephalin Rattus norvegicus 153-163 8780011-3 1996 Transcription of the proenkephalin gene is increased via protein kinase A upon stimulation with cyclic AMP (cAMP) analogues. Cyclic AMP 96-106 proenkephalin Rattus norvegicus 21-34 8780011-3 1996 Transcription of the proenkephalin gene is increased via protein kinase A upon stimulation with cyclic AMP (cAMP) analogues. Cyclic AMP 108-112 proenkephalin Rattus norvegicus 21-34 8780011-9 1996 However, concentrations of noradrenaline that produced a maximal increase in cAMP caused only submaximal elevations of proenkephalin mRNA. Norepinephrine 27-40 proenkephalin Rattus norvegicus 119-132 8780011-4 1996 In the present study, how noradrenaline affected the expression of the proenkephalin gene in both cell types was investigated. Norepinephrine 26-39 proenkephalin Rattus norvegicus 71-84 8780011-10 1996 This discrepancy was explained by the finding that noradrenaline increased the expression of the proenkephalin gene also via alpha 1-adrenoceptors. Norepinephrine 51-64 proenkephalin Rattus norvegicus 97-110 8963340-1 1996 Administration of angiotensin-converting enzyme inhibitor captopril inhibited the activity of renin-angiotensin system (RAS), increased leukin-enkephalin level in the hypothalamus and adenohypophysis. Captopril 58-67 proenkephalin Rattus norvegicus 143-153 8627559-6 1996 Additionally, antisera to [Leu5]enkephalin and dynorphin also resulted in a significant increase in formalin-induced flinching, whereas antisera to [Met5]enkephalin had no effect. Formaldehyde 100-108 proenkephalin Rattus norvegicus 32-42 8627559-6 1996 Additionally, antisera to [Leu5]enkephalin and dynorphin also resulted in a significant increase in formalin-induced flinching, whereas antisera to [Met5]enkephalin had no effect. Formaldehyde 100-108 proenkephalin Rattus norvegicus 154-164 8627559-7 1996 On the basis of significant increases in formalin-induced flinching produced by 1) receptor-selective doses of delta and kappa, but not mu, opioid antagonists and 2) antisera to [Leu5]enkephalin and dynorphin A, but not [Met5]enkephalin, these data suggest the presence of an opioid inhibitory tone which acts to limit the intensity of the pain signal. Formaldehyde 41-49 proenkephalin Rattus norvegicus 184-194 8627559-7 1996 On the basis of significant increases in formalin-induced flinching produced by 1) receptor-selective doses of delta and kappa, but not mu, opioid antagonists and 2) antisera to [Leu5]enkephalin and dynorphin A, but not [Met5]enkephalin, these data suggest the presence of an opioid inhibitory tone which acts to limit the intensity of the pain signal. Formaldehyde 41-49 proenkephalin Rattus norvegicus 226-236 8738153-0 1996 Partial striatal dopamine depletion differentially affects striatal substance P and enkephalin messenger RNA expression. Dopamine 17-25 proenkephalin Rattus norvegicus 84-94 8738153-1 1996 Near total striatal dopamine denervation results in a decrease in substance P and an increase in enkephalin messenger RNA expression in the striatum. Dopamine 20-28 proenkephalin Rattus norvegicus 97-107 8738153-8 1996 In contrast, a significant increase in enkephalin messenger RNA was not detected until striatal dopamine was reduced to 10% of control levels. Dopamine 96-104 proenkephalin Rattus norvegicus 39-49 8738153-9 1996 These results suggest that compensations within the residual dopamine system are not sufficient to maintain normal striatal substance P messenger RNA levels in partially denervated animals, but are sufficient to maintain normal striatal enkephalin messenger RNA expression. Dopamine 61-69 proenkephalin Rattus norvegicus 237-247 9081623-0 1996 Morphological changes in met(5)-enkephalin-immunoreactive synaptic boutons in the rat neostriatum after haloperidol decanoate treatment. haloperidol decanoate 104-125 proenkephalin Rattus norvegicus 32-42 9081623-6 1996 The morphological parameters indicate that methionine(5)-enkephalin-immunoreactive boutons become enlarged, probably by elongating. Methionine 43-53 proenkephalin Rattus norvegicus 57-67 8622133-2 1996 Because the tyrosine hydroxylase (TH), prodynorphin (PDYN), and proenkephalin (PENK) genes contain cAMP response elements that control their expression in their promoters, we used histochemical methods to determine whether ovarian steroids alter expression of the cAMP response element-binding protein (CREB) in the AVPV. Cyclic AMP 99-103 proenkephalin Rattus norvegicus 64-77 8622133-2 1996 Because the tyrosine hydroxylase (TH), prodynorphin (PDYN), and proenkephalin (PENK) genes contain cAMP response elements that control their expression in their promoters, we used histochemical methods to determine whether ovarian steroids alter expression of the cAMP response element-binding protein (CREB) in the AVPV. Cyclic AMP 99-103 proenkephalin Rattus norvegicus 79-83 8622133-7 1996 Double-labeling experiments showed that pCREB was colocalized with PDYN, PENK, or TH mRNA in the AVPV, suggesting that pCREB may mediate the effect of steroid hormones on gene expression in these neurons. Steroids 151-158 proenkephalin Rattus norvegicus 73-77 8937625-9 1996 KT-95, KT-90 and morphine were examined for their potencies in displacing the specific binding of [3H]naloxone (mu-selective ligand), [3H]U69593 (kappa-selective ligand), and [3H]D-Ala2-D-Leu5-enkephalin (delta-selective ligand) to synaptosomal fractions from rat brain. Morphine 17-25 proenkephalin Rattus norvegicus 193-203 8964897-1 1996 The effect of leucine-enkephalin (Leu-Enk) on primary humoral immune response was investigated following intracerebroventricular (i.c.v.) Leucine 34-37 proenkephalin Rattus norvegicus 38-41 8964897-6 1996 treatment of rats with delta opioid receptor antagonist ICI 174,864 and kappa opioid receptor antagonist nor-binaltorphimine (nor-BNI) blocked stimulation and suppression of PFC response induced by Leu-Enk, respectively. norbinaltorphimine 105-124 proenkephalin Rattus norvegicus 202-205 8964897-6 1996 treatment of rats with delta opioid receptor antagonist ICI 174,864 and kappa opioid receptor antagonist nor-binaltorphimine (nor-BNI) blocked stimulation and suppression of PFC response induced by Leu-Enk, respectively. norbinaltorphimine 126-133 proenkephalin Rattus norvegicus 202-205 8964897-6 1996 treatment of rats with delta opioid receptor antagonist ICI 174,864 and kappa opioid receptor antagonist nor-binaltorphimine (nor-BNI) blocked stimulation and suppression of PFC response induced by Leu-Enk, respectively. Leucine 198-201 proenkephalin Rattus norvegicus 202-205 8964897-7 1996 The mu opioid receptor antagonist beta-funaltrexamine (beta-FNA) reversed both immunomodulatory effects produced by Leu-Enk. beta-funaltrexamine 34-53 proenkephalin Rattus norvegicus 120-123 8964897-7 1996 The mu opioid receptor antagonist beta-funaltrexamine (beta-FNA) reversed both immunomodulatory effects produced by Leu-Enk. beta-funaltrexamine 55-63 proenkephalin Rattus norvegicus 120-123 8965640-6 1996 Ibotenic acid lesions further determined that the source of the m-Enk projection was the VMHvl with a possible additional contribution from the MTA. Ibotenic Acid 0-13 proenkephalin Rattus norvegicus 66-69 8717351-6 1996 Activation of protein kinase C with tetradecanoylphorbol acetate (1 mumol/l) caused a strong increase in the number of neurones expressing proenkephalin mRNA. Tetradecanoylphorbol Acetate 36-64 proenkephalin Rattus norvegicus 139-152 9053798-1 1996 Norepinephrine-containing fibres in the medial prefrontal cortex derive from the locus coeruleus, a brainstem nucleus which also receives a dense innervation of enkephalin-immunoreactive axon terminals. Norepinephrine 0-14 proenkephalin Rattus norvegicus 161-171 8851182-3 1996 In the nucleus accumbens chronic cocaine led to an increase in both the number of mu-opioid receptors and the maximal inhibition of adenylyl cyclase activity by DAMGO ([D-Ala2,N-methyl-Phe4,Glyol]enkephalin). Cocaine 33-40 proenkephalin Rattus norvegicus 196-206 8848175-6 1996 Electrophoretic application of a mu-selective agonist, [D-Ala2,N-Me-Phe4,Gly-ol5]enkephalin, had mixed effects on cell activity. [d-ala2,n-me-phe4 55-72 proenkephalin Rattus norvegicus 81-91 8848175-8 1996 The [D-Ala2,N-Me-Phe4,Gly-ol5]enkephalin-evoked inhibitory responses were antagonized by electrophoresis of naloxone (86%). n-me-phe4 12-21 proenkephalin Rattus norvegicus 30-40 8848175-8 1996 The [D-Ala2,N-Me-Phe4,Gly-ol5]enkephalin-evoked inhibitory responses were antagonized by electrophoresis of naloxone (86%). gly-ol5 22-29 proenkephalin Rattus norvegicus 30-40 8848175-8 1996 The [D-Ala2,N-Me-Phe4,Gly-ol5]enkephalin-evoked inhibitory responses were antagonized by electrophoresis of naloxone (86%). Naloxone 108-116 proenkephalin Rattus norvegicus 30-40 8832917-0 1996 Ketorolac causes the release of methionine-enkephalin in rats. Ketorolac 0-9 proenkephalin Rattus norvegicus 43-53 8832917-5 1996 The present experiments demonstrate that the analgesia produced by ketorolac may be caused by the release of the endogenous opioid, methionine-enkephalin. Ketorolac 67-76 proenkephalin Rattus norvegicus 143-153 8821137-5 1996 In 44% of these baclofen-sensitive neurones, the opioid agonist methionine enkephalin (30 microM) also produced an outward current or hyperpolarization. Baclofen 16-24 proenkephalin Rattus norvegicus 75-85 8851165-0 1996 Subchronic haloperidol administration decreases aminopeptidase N activity and [Met5]enkephalin metabolism in rat striatum and cortex. Haloperidol 11-22 proenkephalin Rattus norvegicus 84-94 8851165-2 1996 administration of haloperidol decreases the degradation of [Met5]enkephalin by regional brain slices (Waters et al., 1995, J. Pharmacol. Haloperidol 18-29 proenkephalin Rattus norvegicus 65-75 8851165-10 1996 These data suggest that the haloperidol-induced decrease in [Met5]enkephalin metabolism results, at least in part, from a reduction in the activity of aminopeptidase N. Haloperidol 28-39 proenkephalin Rattus norvegicus 66-76 8531101-6 1995 In contrast, [D-Ala2, NMPhe4, Gly-ol]enkephalin (DAMGO), a high-efficacy mu opioid agonist, produced a significant, dose-related antiallodynic action. nmphe4 22-28 proenkephalin Rattus norvegicus 37-47 8551774-1 1996 To test the hypothesis that a delta opioid, DADLE ([D-Ala2, D-Leu5]-enkephalin), could protect tissue from ischemic damage during hypothermic lung preservation, we studied three groups of rats. delta opioid 30-42 proenkephalin Rattus norvegicus 68-78 8530363-1 1995 Using CHO cells stably transfected with rat mu-opioid receptor cDNA, we show that the mu-agonists morphine and [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin are negatively coupled to adenylylcyclase and inhibit forskolin-stimulated cAMP accumulation. [d-ala2,n-methyl-phe4 111-132 proenkephalin Rattus norvegicus 141-151 8530363-1 1995 Using CHO cells stably transfected with rat mu-opioid receptor cDNA, we show that the mu-agonists morphine and [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin are negatively coupled to adenylylcyclase and inhibit forskolin-stimulated cAMP accumulation. Colforsin 206-215 proenkephalin Rattus norvegicus 141-151 8530363-1 1995 Using CHO cells stably transfected with rat mu-opioid receptor cDNA, we show that the mu-agonists morphine and [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin are negatively coupled to adenylylcyclase and inhibit forskolin-stimulated cAMP accumulation. Cyclic AMP 227-231 proenkephalin Rattus norvegicus 141-151 8530363-3 1995 Withdrawal of morphine or [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin following chronic treatment (by wash or addition of the antagonist naloxone) leads to an immediate increase in cyclase activity (supersensitization or overshoot), which is gradually reversed upon further incubation with naloxone. Naloxone 134-142 proenkephalin Rattus norvegicus 56-66 8530363-3 1995 Withdrawal of morphine or [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin following chronic treatment (by wash or addition of the antagonist naloxone) leads to an immediate increase in cyclase activity (supersensitization or overshoot), which is gradually reversed upon further incubation with naloxone. Naloxone 287-295 proenkephalin Rattus norvegicus 56-66 8998398-0 1995 Adaptive changes in the proenkephalin and D2 dopamine receptor mRNA expression after chronic cocaine in the nucleus accumbens and striatum of the rat. Cocaine 93-100 proenkephalin Rattus norvegicus 24-37 8998398-1 1995 The effects of single and repeated cocaine administration on proenkephalin (PENK) and D2 dopamine receptor mRNA expression in the nucleus accumbens and striatum of the rat were studied. Cocaine 35-42 proenkephalin Rattus norvegicus 61-74 8998398-2 1995 Acute cocaine administration increased PENK expression of mRNA in the striatum and decreased it in both those structures after 24 and 48 h. D2 receptor expression of mRNA fell after 3 h, returned to the control value after 24 h and rose after 48 h in both those brain regions following single cocaine injection. Cocaine 6-13 proenkephalin Rattus norvegicus 39-43 8998398-3 1995 Repeated cocaine increased PENK expression of mRNA after 3 h, but after 24 and 48 h depletion of mRNA expression was observed. Cocaine 9-16 proenkephalin Rattus norvegicus 27-31 8998398-5 1995 The obtained results suggest that in the nucleus accumbens and striatum there is an opposite regulation between PENK and D2 receptor gene expression a short time after single and chronic cocaine administration. Cocaine 187-194 proenkephalin Rattus norvegicus 112-116 8998398-6 1995 Hence, these data provide further evidence for the significance of the PENK and dopamine systems in the neurochemical mechanism of cocaine. Cocaine 131-138 proenkephalin Rattus norvegicus 71-75 8628109-0 1996 Changes in methionine-enkephalin levels in specific rat brain regions following repeated treatment with selective dopaminergic agonists and antagonists. Methionine 11-21 proenkephalin Rattus norvegicus 22-32 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. 4,4a,5,6,7,8,8a,9-octahydro-5-propyl-1H-pyrzolo(3,4-g)quinoline 34-43 proenkephalin Rattus norvegicus 112-115 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. 4,4a,5,6,7,8,8a,9-octahydro-5-propyl-1H-pyrzolo(3,4-g)quinoline 34-43 proenkephalin Rattus norvegicus 208-211 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. 4,4a,5,6,7,8,8a,9-octahydro-5-propyl-1H-pyrzolo(3,4-g)quinoline 34-43 proenkephalin Rattus norvegicus 316-319 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. Sulpiride 47-60 proenkephalin Rattus norvegicus 112-115 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. Nomifensine 182-193 proenkephalin Rattus norvegicus 208-211 8628109-8 1996 On the other hand, treatment with LY 171555 or (-)-sulpiride, but not their combination, markedly increased Met-ENK levels in all brain regions investigated, whereas, treatment with nomifensine increased Met-Enk levels in all brain regions investigated, whereas, treatment with selegiline significantly elevated Met-Enk in HYPO, HIPP and MID but not in CTX. Nomifensine 182-193 proenkephalin Rattus norvegicus 316-319 8847409-6 1995 More rostrally, in the region of catecholamine-immunoreactive extranuclear dendrites, ENK-immunoreactive varicose processes were interdigitated with TH-labeled processes. Catecholamines 33-46 proenkephalin Rattus norvegicus 86-89 8847409-12 1995 These results provide the first direct ultrastructural evidence that morphologically heterogeneous terminals containing ENK immunoreactivity form synapses with catecholamine dendrites within the LC. Catecholamines 160-173 proenkephalin Rattus norvegicus 120-123 8531129-6 1995 Moreover, pretreatment of olfactory bulb membranes with the nonequilibrium antagonist naltrindole 5"-isothiocyanate, which irreversibly blocks the delta 2 subtype, reduced the stimulatory effects of both DELT and DPDPE, whereas pretreatment with [D-Ala2, Leu5, Cys6]enkephalin, which binds covalently to delta 1 receptors, failed to affect the response to the agonists. naltrindole 5'-isothiocyanate 86-115 proenkephalin Rattus norvegicus 266-276 8750096-4 1995 Measurements of the amounts of neuropeptides in the dialysates obtained from studies of KCl-stimulated release showed that [Met]5-enkephalin from the globus pallidus/ventral pallidum region was present at a level of approximately 4-6 fmol/10 microliters of dialysate and neurotensin from the hypothalamus of approximately 500 amol in 10 microliters of dialysate. Potassium Chloride 88-91 proenkephalin Rattus norvegicus 130-140 8869164-0 1995 N-methyl-D-aspartate acutely increases proenkephalin mRNA in the rat striatum. N-Methylaspartate 0-20 proenkephalin Rattus norvegicus 39-52 8593735-4 1995 Leu-enkephalin level in myocardium of rats with AMI and VF has been found to be significantly lower than in animals with AMI but without VF. amicoumacin A 48-51 proenkephalin Rattus norvegicus 4-14 8830303-0 1995 Calcium influx in rat thalamic relay neurons through voltage-dependent calcium channels is inhibited by enkephalin. Calcium 0-7 proenkephalin Rattus norvegicus 104-114 8750096-1 1995 The specific molecular detection of the endogenous neuropeptides methionine ([Met]5) enkephalin and neurotensin released in vivo in rat brain has been accomplished using microdialysis and mass spectrometry. Methionine 65-75 proenkephalin Rattus norvegicus 85-95 7589327-3 1995 The present studies employed experimental techniques to remove afferent axons or classes of projection neurons from rat ACC area 24 followed by coverslip autoradiography to localize changes in binding of [3H]Tyr-D-Ala-Gly-MePhe-Gly-ol (DAMGO) to mu receptors and 2-[3H]D-penicillamine-5-D-penicillamine-enkephalin (DPDPE) to delta receptors. Tritium 205-207 proenkephalin Rattus norvegicus 303-313 8593578-4 1995 Only increases in glucose utilization were produced by D-Ala2; MePhe4, Gly-ol5-enkephalin in brain regions involved in motor control, including the globus pallidus, the substantia nigra, pars reticulata, the nucleus ruber and the cerebellum, and brain regions involved in visual processing--the visual cortex and superior colliculus deep layer. Glucose 18-25 proenkephalin Rattus norvegicus 79-89 8593578-4 1995 Only increases in glucose utilization were produced by D-Ala2; MePhe4, Gly-ol5-enkephalin in brain regions involved in motor control, including the globus pallidus, the substantia nigra, pars reticulata, the nucleus ruber and the cerebellum, and brain regions involved in visual processing--the visual cortex and superior colliculus deep layer. mephe4 63-69 proenkephalin Rattus norvegicus 79-89 8787040-2 1995 Haloperidol increased the Met-enk level in the striatum at all age groups. Haloperidol 0-11 proenkephalin Rattus norvegicus 30-33 8787040-3 1995 However, the Met-enk level was decreased in AL of young and middle-aged rats by the drug. Aluminum 44-46 proenkephalin Rattus norvegicus 17-20 8787040-9 1995 With regard to the effect of aging, Met-enk level in AL of middle-aged rats was higher than that in young rats. Aluminum 53-55 proenkephalin Rattus norvegicus 40-43 8787040-14 1995 In addition, aging caused a blunted response of Met-enk level to haloperidol in the striatum but an increased response of SP content to haloperidol in the NIL. Haloperidol 65-76 proenkephalin Rattus norvegicus 52-55 8588831-1 1995 Previous immunocytochemical studies in rats have indicated that striatal dopamine depletion leads to an increase in enkephalin-immunoreactivity and a decrease in substance P-immunoreactivity in the striatum. Dopamine 73-81 proenkephalin Rattus norvegicus 116-126 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 0-29 proenkephalin Rattus norvegicus 82-95 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 0-29 proenkephalin Rattus norvegicus 167-180 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 31-34 proenkephalin Rattus norvegicus 82-95 8588831-8 1995 Therefore, the results of the present study indicate that in marmosets dopamine has a inhibiting effect on the levels of striatal enkephalin, while its effect on substance P (SP) appears to be absent. Dopamine 71-79 proenkephalin Rattus norvegicus 130-140 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 31-34 proenkephalin Rattus norvegicus 167-180 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 196-199 proenkephalin Rattus norvegicus 82-95 7498306-3 1995 Following chronic morphine treatment this adaptive increase of acetylcholine release was associated with a slight but long-lasting decrease of the (delta-opioid receptor-mediated) maximal inhibitory effect of [Met5]enkephalin, whereas upon intermittent drug treatment delta-opioid receptor desensitization was observed 1 day after opiate withdrawal only. Morphine 18-26 proenkephalin Rattus norvegicus 215-225 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Tetradecanoylphorbol Acetate 196-199 proenkephalin Rattus norvegicus 167-180 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Indomethacin 261-273 proenkephalin Rattus norvegicus 82-95 8774948-4 1995 Tetradecanoyl phorbol acetate (TPA; 1-1000 nmol/l) increases the concentration of proenkephalin mRNA in these cells by activating protein kinase C. The enhancement in proenkephalin mRNA caused by TPA (10 nmol/l) was not affected by the cyclooxygenase inhibitor indomethacin (5 mumol/l). Indomethacin 261-273 proenkephalin Rattus norvegicus 167-180 8774948-5 1995 However, nordihydroguaiaretic acid, which blocks cyclooxygenase and lipoxygenases, potentiated the effect of TPA on proenkephalin mRNA, when used at concentrations of 0.5-50 mumol/l. Masoprocol 9-34 proenkephalin Rattus norvegicus 116-129 8774948-5 1995 However, nordihydroguaiaretic acid, which blocks cyclooxygenase and lipoxygenases, potentiated the effect of TPA on proenkephalin mRNA, when used at concentrations of 0.5-50 mumol/l. Tetradecanoylphorbol Acetate 109-112 proenkephalin Rattus norvegicus 116-129 8774948-7 1995 When added to the incubation medium, leukotriene E4 (10-1000 nmol/l) diminished in a dose-dependent manner the basal and TPA-induced expression of the proenkephalin gene. Leukotriene E4 37-51 proenkephalin Rattus norvegicus 151-164 8774948-7 1995 When added to the incubation medium, leukotriene E4 (10-1000 nmol/l) diminished in a dose-dependent manner the basal and TPA-induced expression of the proenkephalin gene. Tetradecanoylphorbol Acetate 121-124 proenkephalin Rattus norvegicus 151-164 8549638-3 1995 [D-Ala2,Me-Phe4,Gly5-ol]enkephalin (DAGO, a mu-opioid receptor agonist) inhibited the vasodilator response in a dose-related (0.058-5.8 mumol/kg i.v.) me-phe4 8-15 proenkephalin Rattus norvegicus 24-34 8549638-3 1995 [D-Ala2,Me-Phe4,Gly5-ol]enkephalin (DAGO, a mu-opioid receptor agonist) inhibited the vasodilator response in a dose-related (0.058-5.8 mumol/kg i.v.) Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 36-40 proenkephalin Rattus norvegicus 24-34 7498306-3 1995 Following chronic morphine treatment this adaptive increase of acetylcholine release was associated with a slight but long-lasting decrease of the (delta-opioid receptor-mediated) maximal inhibitory effect of [Met5]enkephalin, whereas upon intermittent drug treatment delta-opioid receptor desensitization was observed 1 day after opiate withdrawal only. Acetylcholine 63-76 proenkephalin Rattus norvegicus 215-225 7500843-0 1995 Effects of morphine on forskolin-stimulated pro-enkephalin mRNA levels in rat striatum: a model for acute and chronic opioid actions in brain. Colforsin 23-32 proenkephalin Rattus norvegicus 48-58 8535838-10 1995 In addition, we confirmed in normal animals that the ventrolateral PAG is induced to release Met-enkephalin by systemic morphine. Morphine 120-128 proenkephalin Rattus norvegicus 97-107 8535838-14 1995 Thus, we examined the hypothesis that GABAergic interneurons in the PAG mediated morphine-stimulated enkephalin release. Morphine 81-89 proenkephalin Rattus norvegicus 101-111 8535838-15 1995 When the GABAantagonist bicuculline (0.25 microM to 25 microM) was co-infused with the dialysis medium, Met-enkephalin release increased in a dose-dependent fashion and peaked 68% above pre-infusion levels. Bicuculline 24-35 proenkephalin Rattus norvegicus 108-118 8535838-16 1995 These data elucidate the reciprocal inhibitory relationship between GABA and enkephalin in the ventrolateral PAG. gamma-Aminobutyric Acid 68-72 proenkephalin Rattus norvegicus 77-87 8535840-3 1995 Enkephalin-immunoreactive fibers present in the ventral horn and the central cervical nucleus of upper cervical cord segments almost completely disappeared contralaterally following kainic acid-induced cell loss in the fastigial nucleus. Kainic Acid 182-193 proenkephalin Rattus norvegicus 0-10 7500843-2 1995 One potential biological role for this reaction would be to decrease pro-enkephalin mRNA synthesis by decreasing intracellular cAMP levels and preventing stimulation of gene expression via the cAMP regulatory element (CRE). Cyclic AMP 127-131 proenkephalin Rattus norvegicus 73-83 7500843-2 1995 One potential biological role for this reaction would be to decrease pro-enkephalin mRNA synthesis by decreasing intracellular cAMP levels and preventing stimulation of gene expression via the cAMP regulatory element (CRE). Cyclic AMP 193-197 proenkephalin Rattus norvegicus 73-83 7500843-6 1995 The treatment with the forskolin analog increased striatal pro-enkephalin mRNA levels approximately 2-fold in 4 h. When rats were injected with morphine (20 mg/kg i.p.) Colforsin 23-32 proenkephalin Rattus norvegicus 63-73 7500843-6 1995 The treatment with the forskolin analog increased striatal pro-enkephalin mRNA levels approximately 2-fold in 4 h. When rats were injected with morphine (20 mg/kg i.p.) Morphine 144-152 proenkephalin Rattus norvegicus 63-73 7500843-10 1995 1 h before DMB-forskolin administration, the inhibitory effect of morphine was lost (i.e. DMB-forskolin increased pro-enkephalin mRNA levels by 2 fold in either control and morphine-treated rats). Morphine 66-74 proenkephalin Rattus norvegicus 118-128 7643080-1 1995 We have previously shown that in cell extracts from rat striatum, cyclic AMP response element (CRE) binding protein (CREB), rather than AP-1 proteins, preferentially interacts with the CRE-2 element of the proenkephalin second messenger-inducible enhancer, even under conditions in which AP-1 proteins are highly induced. Cyclic AMP 66-76 proenkephalin Rattus norvegicus 206-219 9026395-5 1995 A decrease of leu-enkephalin contents in rat brain on the 7th day following adrenalectomy occurred simultaneously with a decrease in enkephalin aminopeptidase activity and specific binding of labeled leu-enkephalin testifying to strengthening of enkephalin release form neurosecretory granules of brain structures following adrenalectomy. Leucine 14-17 proenkephalin Rattus norvegicus 18-28 7643080-4 1995 We report that cyclic AMP induction of the proenkephalin gene in striatal cultures is protein synthesis independent, excluding a role for newly synthesized proteins like c-Fos. Cyclic AMP 15-25 proenkephalin Rattus norvegicus 43-56 7562532-2 1995 This study has used [3H]-[D-Ala2,MePhe4,Gly- (ol)5(2)]-enkephalin, a highly selective ligand, to label mu-opioid receptors in both membranes and tissue sections. Tritium 21-23 proenkephalin Rattus norvegicus 55-65 7562532-4 1995 Autoradiographic studies showed an overall decrease of[3H]-Ala2,MePhe4,Gly-(ol)5(2)]-enkephalin binding in the somatosensory cortex (around -30%). [3h]-ala2 54-63 proenkephalin Rattus norvegicus 85-95 7562532-4 1995 Autoradiographic studies showed an overall decrease of[3H]-Ala2,MePhe4,Gly-(ol)5(2)]-enkephalin binding in the somatosensory cortex (around -30%). mephe4 64-70 proenkephalin Rattus norvegicus 85-95 8523414-4 1995 The binding of [3H]-U69593 was effectively displaced by the selective kappa 1 ligands, U-69593 and U-50488H, but only weakly displaced by Met5-enkephalin-Arg6-Phe7, a selective kappa 2 ligand, which showed only 11 +/- 3% inhibition of [3H]-U69593 binding at the concentration of 1 microM. Tritium 16-18 proenkephalin Rattus norvegicus 143-153 7501244-0 1995 Effect of minute amounts of [D-Ala2,MePhe4,Gly(ol)5]enkephalin injected into the tuberomammillary nucleus of rats on histamine release from the cerebral cortex. Histamine 117-126 proenkephalin Rattus norvegicus 52-62 7494455-0 1995 Effect of reserpine treatment on enkephalin mRNA level in the rat striatum: an in situ hybridization study. Reserpine 10-19 proenkephalin Rattus norvegicus 33-43 7561631-6 1995 The response to the Met-enkephalin analogue, [D-Ala2-Met2]-enkephalinamide (DALA), was also significantly enhanced by prior sodium depletion. [d-ala2-met2]-enkephalinamide 45-74 proenkephalin Rattus norvegicus 24-34 7561631-6 1995 The response to the Met-enkephalin analogue, [D-Ala2-Met2]-enkephalinamide (DALA), was also significantly enhanced by prior sodium depletion. Sodium 124-130 proenkephalin Rattus norvegicus 24-34 7477937-2 1995 Pentylenetetrazole increased the level of proenkephalin messenger RNA, but slightly decreased that of prodynorphin messenger RNA in the dentate gyrus. Pentylenetetrazole 0-18 proenkephalin Rattus norvegicus 42-55 7501282-0 1995 Differential regulation of c-fos, proenkephalin and tyrosine hydroxylase gene expression by metrazole in the hamster adrenal and hippocampus. Pentylenetetrazole 92-101 proenkephalin Rattus norvegicus 34-47 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 0-9 proenkephalin Rattus norvegicus 56-69 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 0-9 proenkephalin Rattus norvegicus 71-75 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 0-9 proenkephalin Rattus norvegicus 156-160 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 11-14 proenkephalin Rattus norvegicus 56-69 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 11-14 proenkephalin Rattus norvegicus 71-75 7501282-1 1995 Metrazole (MTZ) induces sequential activation of c-fos, proenkephalin (Penk) and tyrosine hydroxylase (TH) gene expression in the rat adrenal and c-fos and Penk gene expression in the rat hippocampus. Pentylenetetrazole 11-14 proenkephalin Rattus norvegicus 156-160 8523414-4 1995 The binding of [3H]-U69593 was effectively displaced by the selective kappa 1 ligands, U-69593 and U-50488H, but only weakly displaced by Met5-enkephalin-Arg6-Phe7, a selective kappa 2 ligand, which showed only 11 +/- 3% inhibition of [3H]-U69593 binding at the concentration of 1 microM. U 69593 20-26 proenkephalin Rattus norvegicus 143-153 7583317-3 1995 The influence of thyroid hormones on kainic acid (KA)-induced expression of ENK and DYN mRNAs in the granule cells of the dentate gyrus was also studied. Kainic Acid 37-48 proenkephalin Rattus norvegicus 76-79 7477761-4 1995 Following subchronic administration of pergolide, enkephalin mRNA expression was decreased by 23% (p < 0.05) while other drugs were without effect. Pergolide 39-48 proenkephalin Rattus norvegicus 50-60 7501303-4 1995 On the other hand, TH-IR and ENK-LIR neurons were nearly included in and thus considered to be subpopulations of GABA-LIR and CR-IR neurons, respectively, for about 80% of these two neuron groups contained GABA-L and CR immunoreactivities, respectively. gamma-Aminobutyric Acid 113-117 proenkephalin Rattus norvegicus 29-32 7501303-4 1995 On the other hand, TH-IR and ENK-LIR neurons were nearly included in and thus considered to be subpopulations of GABA-LIR and CR-IR neurons, respectively, for about 80% of these two neuron groups contained GABA-L and CR immunoreactivities, respectively. gamma-Aminobutyric Acid 206-210 proenkephalin Rattus norvegicus 29-32 7750466-6 1995 Enkephalin immunoreactivity was detected by immunocytochemistry and enkephalin messenger RNA with in situ hybridization histochemistry using 35S- or digoxigenin-labeled riboprobes. Sulfur-35 141-144 proenkephalin Rattus norvegicus 0-10 8524983-6 1995 Since the motor stimulant response to intra-accumbens microinjection of the delta-opioid agonist, [D-penicillamine2,5]-enkephalin, was not augmented in a previous study, we tested the behavioral response to a new endogenous delta-opioid agonist, [D-Ala2] deltorphin I. delta-opioid 76-88 proenkephalin Rattus norvegicus 119-129 7476031-0 1995 Acute repeated nicotine injections increase enkephalin and decrease AP-1 DNA binding activity in rat adrenal medulla. Nicotine 15-23 proenkephalin Rattus norvegicus 44-54 7476031-2 1995 Repeated acute nicotine injections (3 mg/kg i.p., 7 injections equi-spaced over a 3 h period) effectively increased adrenal tyrosine hydroxylase [3] and [Met5]enkephalin levels and also profoundly decreased adrenal medulla AP-1 DNA binding activity for over 8 h. Nicotine 15-23 proenkephalin Rattus norvegicus 159-169 7477899-5 1995 Injection of [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin immediately before prostaglandin E2 or CGS21680 significantly attenuated the hyperalgesia subsequently induced by these agents, i.e. the sensitivity to these hyperalgesic agents was decreased. n-me-phe4 21-30 proenkephalin Rattus norvegicus 39-49 7477899-5 1995 Injection of [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin immediately before prostaglandin E2 or CGS21680 significantly attenuated the hyperalgesia subsequently induced by these agents, i.e. the sensitivity to these hyperalgesic agents was decreased. gly5-ol 31-38 proenkephalin Rattus norvegicus 39-49 7477899-6 1995 On the other hand, injection of [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin 5 min after prostaglandin E2 or CGS21680 significantly enhanced the hyperalgesia observed. n-me-phe4 40-49 proenkephalin Rattus norvegicus 58-68 7477899-6 1995 On the other hand, injection of [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin 5 min after prostaglandin E2 or CGS21680 significantly enhanced the hyperalgesia observed. Dinoprostone 81-97 proenkephalin Rattus norvegicus 58-68 7477899-6 1995 On the other hand, injection of [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin 5 min after prostaglandin E2 or CGS21680 significantly enhanced the hyperalgesia observed. 2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine 101-109 proenkephalin Rattus norvegicus 58-68 7477899-7 1995 Injection of the adenosine A1-agonist N6-cyclopentyladenosine immediately before and 5 min after prostaglandin E2 or CGS21680 had a similar effect to [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin. N(6)-cyclopentyladenosine 38-61 proenkephalin Rattus norvegicus 176-186 7552341-7 1995 Leu-enkephalin, which derives from both prodynorphin and proenkephalin, and Met-enkephalin, which derives from proenkephalin, were affected by chronic morphine mainly in Fischer rats, increasing levels in most of the brain areas examined. Morphine 151-159 proenkephalin Rattus norvegicus 4-14 7750466-6 1995 Enkephalin immunoreactivity was detected by immunocytochemistry and enkephalin messenger RNA with in situ hybridization histochemistry using 35S- or digoxigenin-labeled riboprobes. Digoxigenin 149-160 proenkephalin Rattus norvegicus 0-10 7755638-0 1995 Proenkephalin gene expression: interaction of glucocorticoid and cAMP regulatory elements. Cyclic AMP 65-69 proenkephalin Rattus norvegicus 0-13 7651752-7 1995 Only ENK mRNA levels increased (5-fold; p < 0.01) when pups were born in 11-13% O2; however, still less (p < 0.01) than after birth in room air when it increased nine times (p < 0.01). Oxygen 83-85 proenkephalin Rattus norvegicus 5-8 7755638-3 1995 When inserted in front of a chloramphenicol acyl transferase (CAT) construct that is driven by a Penk promoter containing a cAMP response element, dexamethasone (10 microM) produced a 5-fold increase with GRE+, a small increase with RGRE, and no change with GRE- or the Penk promoter alone. Cyclic AMP 124-128 proenkephalin Rattus norvegicus 97-101 7755638-3 1995 When inserted in front of a chloramphenicol acyl transferase (CAT) construct that is driven by a Penk promoter containing a cAMP response element, dexamethasone (10 microM) produced a 5-fold increase with GRE+, a small increase with RGRE, and no change with GRE- or the Penk promoter alone. Dexamethasone 147-160 proenkephalin Rattus norvegicus 97-101 7755638-3 1995 When inserted in front of a chloramphenicol acyl transferase (CAT) construct that is driven by a Penk promoter containing a cAMP response element, dexamethasone (10 microM) produced a 5-fold increase with GRE+, a small increase with RGRE, and no change with GRE- or the Penk promoter alone. Dexamethasone 147-160 proenkephalin Rattus norvegicus 270-274 7755638-5 1995 However, dexamethasone plus forskolin caused a synergistic induction of CAT expression with the GRE+ oligo, no effect with the RGRE and an antagonistic effect with the Penk promoter alone and the GRE- oligo. Dexamethasone 9-22 proenkephalin Rattus norvegicus 168-172 7755638-5 1995 However, dexamethasone plus forskolin caused a synergistic induction of CAT expression with the GRE+ oligo, no effect with the RGRE and an antagonistic effect with the Penk promoter alone and the GRE- oligo. Colforsin 28-37 proenkephalin Rattus norvegicus 168-172 7755638-6 1995 These results demonstrate that GRE+, and to a lesser degree RGRE, can mimic the response of the endogenous Penk gene to dexamethasone and forskolin. Dexamethasone 120-133 proenkephalin Rattus norvegicus 107-111 7755638-6 1995 These results demonstrate that GRE+, and to a lesser degree RGRE, can mimic the response of the endogenous Penk gene to dexamethasone and forskolin. Colforsin 138-147 proenkephalin Rattus norvegicus 107-111 7755638-7 1995 Furthermore, a dexamethasone activated glucocorticoid receptor may inhibit cAMP mediated transcription of the Penk gene when a GRE+ or RGRE is not present. Dexamethasone 15-28 proenkephalin Rattus norvegicus 110-114 7755638-7 1995 Furthermore, a dexamethasone activated glucocorticoid receptor may inhibit cAMP mediated transcription of the Penk gene when a GRE+ or RGRE is not present. Cyclic AMP 75-79 proenkephalin Rattus norvegicus 110-114 7637869-5 1995 The effect of L-DOPA on the gene expression of preproenkephalin and glutamate decarboxylase (M(r) 67,000) differs from the increase in striatal enkephalin content and glutamate decarboxylase activity previously found following L-DOPA treatment. Levodopa 14-20 proenkephalin Rattus norvegicus 53-63 7477890-4 1995 The partial depleting effect of [D-Pen2,D-Pen5]enkephalin on aluminum content, in the range of 0.2-1.0 micrograms/3 microliters, was dose-dependent and could be reversed by naloxone pretreatment. Naloxone 173-181 proenkephalin Rattus norvegicus 47-57 7477890-0 1995 [D-Pen2,D-Pen5]enkephalin, a delta opioid agonist reduces endogenous aluminum content in the rat central nervous system. Aluminum 69-77 proenkephalin Rattus norvegicus 15-25 7477890-2 1995 Intracerebroventricular injection of a subanalgesic dose of [D-Pen2,D-Pen5]enkephalin (0.2 microgram/3 microliters) produced a transient, time-dependent reduction of the aluminum content. Aluminum 170-178 proenkephalin Rattus norvegicus 75-85 7477890-4 1995 The partial depleting effect of [D-Pen2,D-Pen5]enkephalin on aluminum content, in the range of 0.2-1.0 micrograms/3 microliters, was dose-dependent and could be reversed by naloxone pretreatment. Aluminum 61-69 proenkephalin Rattus norvegicus 47-57 7637869-5 1995 The effect of L-DOPA on the gene expression of preproenkephalin and glutamate decarboxylase (M(r) 67,000) differs from the increase in striatal enkephalin content and glutamate decarboxylase activity previously found following L-DOPA treatment. Levodopa 227-233 proenkephalin Rattus norvegicus 53-63 7635178-3 1995 The selective mu-opioid receptor agonist, [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin (DAMGO, 10(-7)-10(-6) M), induced an increase in basal tension which remained after removal of endothelium or in Ca(2+)-free solution, but was inhibited by beta-flunaltrexamine. [d-ala2,n-me-phe4 42-59 proenkephalin Rattus norvegicus 68-78 7670227-2 1995 The two libraries were used in conjunction with an iterative selection process to identify individual peptides capable of inhibiting the binding of the mu-selective opioid peptide [3H]-[D-Ala2,MePhe4,Gly-ol5]enkephalin to rat brain homogenates. Tritium 181-183 proenkephalin Rattus norvegicus 208-218 7635178-3 1995 The selective mu-opioid receptor agonist, [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin (DAMGO, 10(-7)-10(-6) M), induced an increase in basal tension which remained after removal of endothelium or in Ca(2+)-free solution, but was inhibited by beta-flunaltrexamine. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 80-85 proenkephalin Rattus norvegicus 68-78 7635178-3 1995 The selective mu-opioid receptor agonist, [D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin (DAMGO, 10(-7)-10(-6) M), induced an increase in basal tension which remained after removal of endothelium or in Ca(2+)-free solution, but was inhibited by beta-flunaltrexamine. beta-flunaltrexamine 235-255 proenkephalin Rattus norvegicus 68-78 7635178-5 1995 The delta-opioid receptor agonist, [D-Pen2,D-Pen5]enkephalin, had no effect on resting tension but potentiated the contractions induced by noradrenaline; these effects were abolished by naltrindol. Norepinephrine 139-152 proenkephalin Rattus norvegicus 50-60 7635178-5 1995 The delta-opioid receptor agonist, [D-Pen2,D-Pen5]enkephalin, had no effect on resting tension but potentiated the contractions induced by noradrenaline; these effects were abolished by naltrindol. naltrindol 186-196 proenkephalin Rattus norvegicus 50-60 7534337-2 1995 Leu-enkephalin was readily hydrolyzed to free tyrosine and Gly-Gly-Phe-Leu. Tyrosine 46-54 proenkephalin Rattus norvegicus 4-14 7534337-2 1995 Leu-enkephalin was readily hydrolyzed to free tyrosine and Gly-Gly-Phe-Leu. gly-gly-phe-leu 59-74 proenkephalin Rattus norvegicus 4-14 7751438-10 1995 These results indicate that enkephalin immunoreactivity is intensely localized to dcvs within terminals that may have direct inhibitory (symmetric synapses) actions on vagal motor neurons in both the compact portion of the NA and the DMN. Dimethylnitrosamine 234-237 proenkephalin Rattus norvegicus 28-38 7568625-3 1995 Morphine treatment increased striatal Met-enkephalin. Morphine 0-8 proenkephalin Rattus norvegicus 42-52 7568625-9 1995 Naloxone-precipitated withdrawal accentuated the increase in dynorphin A and B levels in the accumbens and dynorphin A levels in the striatum, while inducing an increase in enkephalin levels in the accumbens and Met-enkephalin in the VTA. Naloxone 0-8 proenkephalin Rattus norvegicus 173-183 7568625-9 1995 Naloxone-precipitated withdrawal accentuated the increase in dynorphin A and B levels in the accumbens and dynorphin A levels in the striatum, while inducing an increase in enkephalin levels in the accumbens and Met-enkephalin in the VTA. Naloxone 0-8 proenkephalin Rattus norvegicus 216-226 7714785-2 1995 Dose-dependent increases in activity also could be produced by intra-MR injections of the mu-opioid agonist Tyr-D-Ala-Gly-MePhe-Gly(ol)-enkephalin (DAMGO) and the delta-opioid agonist D-Pen2,D-Pen5-enkephalin (DPDPE), but not by the kappa-opioid agonist Dynorphin A (1-13). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 148-153 proenkephalin Rattus norvegicus 136-146 7714785-2 1995 Dose-dependent increases in activity also could be produced by intra-MR injections of the mu-opioid agonist Tyr-D-Ala-Gly-MePhe-Gly(ol)-enkephalin (DAMGO) and the delta-opioid agonist D-Pen2,D-Pen5-enkephalin (DPDPE), but not by the kappa-opioid agonist Dynorphin A (1-13). Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 148-153 proenkephalin Rattus norvegicus 198-208 7714785-2 1995 Dose-dependent increases in activity also could be produced by intra-MR injections of the mu-opioid agonist Tyr-D-Ala-Gly-MePhe-Gly(ol)-enkephalin (DAMGO) and the delta-opioid agonist D-Pen2,D-Pen5-enkephalin (DPDPE), but not by the kappa-opioid agonist Dynorphin A (1-13). d-pen2 184-190 proenkephalin Rattus norvegicus 136-146 9620062-4 1995 Continuous, intrastriatal infusion of the competitive NMDA receptor antagonist, 3-((+/-)-2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid, (CPP, 0.12 and 1.2microg/day) decreased both enkephalin mRNA and substance P mRNA in dose-dependent manner evenly throughout the striatum adjacent to the infusion site. 3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid 80-138 proenkephalin Rattus norvegicus 185-195 7630485-3 1995 DAMGO ([D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin; 0.3-10 microM) and morphine (1-30 microM), mu-opioid agonists, produced a concentration-dependent reduction (approximately 85 and approximately 77% reduction, respectively) in the capsaicin (3 microM)-evoked release of glutamate. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 0-5 proenkephalin Rattus norvegicus 33-43 7630485-3 1995 DAMGO ([D-Ala2,N-Me-Phe4,Gly5-ol]enkephalin; 0.3-10 microM) and morphine (1-30 microM), mu-opioid agonists, produced a concentration-dependent reduction (approximately 85 and approximately 77% reduction, respectively) in the capsaicin (3 microM)-evoked release of glutamate. gly5-ol 25-32 proenkephalin Rattus norvegicus 33-43 7630485-5 1995 DPDPE ([D-Pen2,5]enkephalin; 1-10 microM), a delta-opioid agonist, also reduced the capsaicin-evoked release in a concentration-dependent manner (approximately 59% reduction). Capsaicin 84-93 proenkephalin Rattus norvegicus 17-27 7721997-4 1995 Our colocalization results show that the increases in neurotensin/neuromedin N and proenkephalin mRNAs after polyethylene glycol injection occur to a significant degree in cells that also contain corticotropin-releasing hormone mRNA. Polyethylene Glycols 109-128 proenkephalin Rattus norvegicus 83-96 7534774-3 1995 At each age examined, substance P+, enkephalin- striatal neurons were the predominant class of cells in which cocaine induced c-fos gene expression. Cocaine 110-117 proenkephalin Rattus norvegicus 36-46 7697375-6 1995 Most of the effects of Met-enkephalin could also be blocked by nor-binaltorphimine (67%, n = 6), but less by naltrindole (25%, n = 8). norbinaltorphimine 63-82 proenkephalin Rattus norvegicus 27-37 7560914-0 1995 Enkephalin in the caudal PAG of rat: an immunocytochemical electron microscopic study. phenylacetylglycine 25-28 proenkephalin Rattus norvegicus 0-10 7780637-2 1995 The effects induced in rats on naloxone-precipitated morphine withdrawal syndrome by the new mixed inhibitor of enkephalin catabolism able to cross the blood-brain barrier RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyl dithio]-1-ox-opropyl-L-phenylalanine benzyl ester) given alone or associated with the selective CCKB antagonist, PD-134,308, were investigated. Naloxone 31-39 proenkephalin Rattus norvegicus 112-122 7780637-2 1995 The effects induced in rats on naloxone-precipitated morphine withdrawal syndrome by the new mixed inhibitor of enkephalin catabolism able to cross the blood-brain barrier RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyl dithio]-1-ox-opropyl-L-phenylalanine benzyl ester) given alone or associated with the selective CCKB antagonist, PD-134,308, were investigated. Morphine 53-61 proenkephalin Rattus norvegicus 112-122 7780637-2 1995 The effects induced in rats on naloxone-precipitated morphine withdrawal syndrome by the new mixed inhibitor of enkephalin catabolism able to cross the blood-brain barrier RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyl dithio]-1-ox-opropyl-L-phenylalanine benzyl ester) given alone or associated with the selective CCKB antagonist, PD-134,308, were investigated. RB 101 172-178 proenkephalin Rattus norvegicus 112-122 7780637-2 1995 The effects induced in rats on naloxone-precipitated morphine withdrawal syndrome by the new mixed inhibitor of enkephalin catabolism able to cross the blood-brain barrier RB 101 (N-((R,S)-2-benzyl-3[(S)(2-amino-4-methylthio)butyl dithio]-1-ox-opropyl-L-phenylalanine benzyl ester) given alone or associated with the selective CCKB antagonist, PD-134,308, were investigated. pd-134 344-350 proenkephalin Rattus norvegicus 112-122 7780637-12 1995 These results suggest that an increase in endogenous enkephalin levels induced by PD-134,308 could participate in the facilitation of RB 101 behavioural responses. pd-134 82-88 proenkephalin Rattus norvegicus 53-63 7780637-12 1995 These results suggest that an increase in endogenous enkephalin levels induced by PD-134,308 could participate in the facilitation of RB 101 behavioural responses. RB 101 134-140 proenkephalin Rattus norvegicus 53-63 7715840-10 1995 We suggest that carrageenan-induced inflammation may alter endogenous enkephalin levels, perhaps by a decrease in CCK availability. Carrageenan 16-27 proenkephalin Rattus norvegicus 70-80 7722220-0 1995 Comparison of immunohistochemical localization of [Met5]enkephalin-Arg6-Gly7-Leu8, [Met5]enkephalin, neuropeptide Y and vasoactive intestinal polypeptide in the superior cervical ganglion of the rat. arg6-gly7-leu8 67-81 proenkephalin Rattus norvegicus 56-66 7722220-4 1995 (1) A minor population (10-20%) of principal neurons was immunoreactive for [Met5]enkephalin-Arg6-Gly7-Leu8 but not immunoreactive for neuropeptide Y nor vasoactive intestinal polypeptide. arg6-gly7-leu8 93-107 proenkephalin Rattus norvegicus 82-92 7713149-3 1995 Conversely, the selective mu- and delta-opioid receptor agonists [D-Ala2,NMePhe4,Gly-ol5]enkephalin (DAMGO) and [D-Pen2,D-Pen5]enkephalin (DPDPE), respectively, enhanced the K(+)-stimulated release of [3H]5-HT. [d-ala2,nmephe4 65-80 proenkephalin Rattus norvegicus 89-99 7697375-7 1995 Naltrindole, however, seemed to be more effective in blocking the action of [D-Pen2,5]-enkephalin (100%, n = 2). naltrindole 0-11 proenkephalin Rattus norvegicus 87-97 7798908-3 1995 The rank order potency of drugs competing with [3H]diprenorphine was as follows: levorphanol (Ki = 0.6 +/- 0.2 nM) approximately beta-endorphin (Ki = 0.7 +/- 0.05 nM) approximately morphine (Ki = 0.8 +/- 0.5 nM) approximately [D-Ala2, N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO; Ki = 1.6 +/- 0.5 nM) uch much greater than U50,488 (Ki = 910 +/- 0.78 nM) > [D-Pen2,5]- enkephalin (Ki = 3,170 +/- 98 nM) > dextrorphan (Ki = 4,100 +/- 68 nM). [3H]Diprenorphine 47-64 proenkephalin Rattus norvegicus 254-264 7798908-3 1995 The rank order potency of drugs competing with [3H]diprenorphine was as follows: levorphanol (Ki = 0.6 +/- 0.2 nM) approximately beta-endorphin (Ki = 0.7 +/- 0.05 nM) approximately morphine (Ki = 0.8 +/- 0.5 nM) approximately [D-Ala2, N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO; Ki = 1.6 +/- 0.5 nM) uch much greater than U50,488 (Ki = 910 +/- 0.78 nM) > [D-Pen2,5]- enkephalin (Ki = 3,170 +/- 98 nM) > dextrorphan (Ki = 4,100 +/- 68 nM). [3H]Diprenorphine 47-64 proenkephalin Rattus norvegicus 364-374 7798908-3 1995 The rank order potency of drugs competing with [3H]diprenorphine was as follows: levorphanol (Ki = 0.6 +/- 0.2 nM) approximately beta-endorphin (Ki = 0.7 +/- 0.05 nM) approximately morphine (Ki = 0.8 +/- 0.5 nM) approximately [D-Ala2, N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO; Ki = 1.6 +/- 0.5 nM) uch much greater than U50,488 (Ki = 910 +/- 0.78 nM) > [D-Pen2,5]- enkephalin (Ki = 3,170 +/- 98 nM) > dextrorphan (Ki = 4,100 +/- 68 nM). Levorphanol 81-92 proenkephalin Rattus norvegicus 254-264 7798908-3 1995 The rank order potency of drugs competing with [3H]diprenorphine was as follows: levorphanol (Ki = 0.6 +/- 0.2 nM) approximately beta-endorphin (Ki = 0.7 +/- 0.05 nM) approximately morphine (Ki = 0.8 +/- 0.5 nM) approximately [D-Ala2, N-Me-Phe4,Gly-ol5]-enkephalin (DAMGO; Ki = 1.6 +/- 0.5 nM) uch much greater than U50,488 (Ki = 910 +/- 0.78 nM) > [D-Pen2,5]- enkephalin (Ki = 3,170 +/- 98 nM) > dextrorphan (Ki = 4,100 +/- 68 nM). Levorphanol 81-92 proenkephalin Rattus norvegicus 364-374 7651893-9 1995 The results clearly demonstrate differential changes in enkephalin gene expression in brain regions and spinal cord of the abstinent and nonabstinent morphine-tolerant/dependent rats. Morphine 150-158 proenkephalin Rattus norvegicus 56-66 8527000-6 1995 In the striata of 6-OHDA-lesioned rats, PENK gene is upregulated, PDYN gene is down-regulated and the induction of c-fos gene by D2 receptor antagonists is abolished, whereas selective D1 receptor agonists induce c-fos gene, which does not occur in non-lesioned rats. Oxidopamine 18-24 proenkephalin Rattus norvegicus 40-44 7715812-6 1994 This BMI-sensitive event was depressed, however, by application of the mu-opioid receptor agonist [D-Ala2-N-Me-Phe4,Gly5(5)-ol]enkephalin (DAGO, 10 microM; 15.1 +/- 8.7% of rate in control; n = 6 slices), an effect that was antagonized by naloxone (20 microM). bicuculline methiodide 5-8 proenkephalin Rattus norvegicus 127-137 8713290-3 1995 The level of leu-enkephalin in adrenal glands was directly related to plasma creatinine. Creatinine 77-87 proenkephalin Rattus norvegicus 17-27 8545240-2 1995 Met-ENK increased and decreased H2O2 production by macrophages of DA and AO rats, respectively. Hydrogen Peroxide 32-36 proenkephalin Rattus norvegicus 4-7 7697877-1 1994 Destruction of dopamine neurons of the nigrostriatal pathway in the early postnatal rat enhances the levels of Met5-enkephalin in the adult dorsal striatum (caudate-putamen nuclei) and may contribute to the abnormal self-injurious behavior seen in humans with Lesch-Nyhan disease. Dopamine 15-23 proenkephalin Rattus norvegicus 116-126 7697877-6 1994 In selectively lesioned animals, there was a significant increase in the relative optical density of immunoautoradiographic labeling for enkephalin throughout the rostrocaudal striatum ipsilateral to 6-OHDA as compared to control groups. Oxidopamine 200-206 proenkephalin Rattus norvegicus 137-147 7697877-9 1994 However, ipsilateral to 6-OHDA injections there was a small (5.4%), but significant increase in the proportion of enkephalin immunoreactive terminals contacting dendritic spines, the known targets of dopamine terminals. Oxidopamine 24-30 proenkephalin Rattus norvegicus 114-124 7697877-9 1994 However, ipsilateral to 6-OHDA injections there was a small (5.4%), but significant increase in the proportion of enkephalin immunoreactive terminals contacting dendritic spines, the known targets of dopamine terminals. Dopamine 200-208 proenkephalin Rattus norvegicus 114-124 7697877-10 1994 Appositions were commonly detected between enkephalin immunoreactive terminals and other morphologically heterogeneous axons in the striatum ipsilateral to 6-OHDA and in control tissues. Oxidopamine 156-162 proenkephalin Rattus norvegicus 43-53 7697877-11 1994 Met5-enkephalin immunoreactive terminals in adult striatum ipsilateral to 6-OHDA injections showed a 214% increase in volume as compared to vehicle-injected controls. Oxidopamine 74-80 proenkephalin Rattus norvegicus 5-15 7697877-12 1994 Concurrently, there was a small (13%), but significant increase in the numerical density (number/volume) of enkephalin-labeled terminals both contralateral and ipsilateral to 6-OHDA injections. Oxidopamine 175-181 proenkephalin Rattus norvegicus 108-118 7697877-13 1994 These results suggest that a change in bouton size is the major mechanism by which striatal enkephalin neurons alter their synaptic efficacy and target associations to compensate for damage to the nigrostriatal dopamine neurons. Dopamine 211-219 proenkephalin Rattus norvegicus 92-102 7882034-9 1994 Most frequently (90%), enkephalin inhibited the same neurons as those on which GABA had the inhibitory effects. gamma-Aminobutyric Acid 79-83 proenkephalin Rattus norvegicus 23-33 7882034-11 1994 Moreover, 76% of neurons inhibited by enkephalin were found to be tonically inhibited by endogenous GABA through GABAA receptors. gamma-Aminobutyric Acid 100-104 proenkephalin Rattus norvegicus 38-48 7882034-13 1994 Since GABAA agonists actually facilitate lordosis in the PAG, these PAG neurons inhibited by both GABA and enkephalin may themselves facilitate behaviors which are antagonistic to lordosis, such as defensive behaviors. gabaa 6-11 proenkephalin Rattus norvegicus 107-117 7882034-13 1994 Since GABAA agonists actually facilitate lordosis in the PAG, these PAG neurons inhibited by both GABA and enkephalin may themselves facilitate behaviors which are antagonistic to lordosis, such as defensive behaviors. gamma-Aminobutyric Acid 6-10 proenkephalin Rattus norvegicus 107-117 7715812-6 1994 This BMI-sensitive event was depressed, however, by application of the mu-opioid receptor agonist [D-Ala2-N-Me-Phe4,Gly5(5)-ol]enkephalin (DAGO, 10 microM; 15.1 +/- 8.7% of rate in control; n = 6 slices), an effect that was antagonized by naloxone (20 microM). d-ala2-n-me-phe4 99-115 proenkephalin Rattus norvegicus 127-137 7715812-6 1994 This BMI-sensitive event was depressed, however, by application of the mu-opioid receptor agonist [D-Ala2-N-Me-Phe4,Gly5(5)-ol]enkephalin (DAGO, 10 microM; 15.1 +/- 8.7% of rate in control; n = 6 slices), an effect that was antagonized by naloxone (20 microM). Naloxone 239-247 proenkephalin Rattus norvegicus 127-137 7700499-6 1994 However, depletion of Met-Enk was also observed following naloxone-precipitated opioid withdrawal accompanying selective hypersecretion of OXT, suggesting co-secretion of OXT and Met-Enk. Naloxone 58-66 proenkephalin Rattus norvegicus 26-29 7860799-5 1994 Preproenkephalin A (ENK) mRNA-expressing cells were found at all levels of the PAG in three distinct longitudinal columns. pag 79-82 proenkephalin Rattus norvegicus 20-23 7996199-2 1994 Using fura-2-based imaging we found that Ca2+ transients evoked by depolarization with 50 mM KCl were suppressed by the mu-opioid receptor agonist D-Ala2,N-MePhe4,Gly5-ol-enkephalin (DAMGO) and less effectively by the kappa-receptor agonist U-69,593. Fura-2 6-12 proenkephalin Rattus norvegicus 171-181 7996199-2 1994 Using fura-2-based imaging we found that Ca2+ transients evoked by depolarization with 50 mM KCl were suppressed by the mu-opioid receptor agonist D-Ala2,N-MePhe4,Gly5-ol-enkephalin (DAMGO) and less effectively by the kappa-receptor agonist U-69,593. Potassium Chloride 93-96 proenkephalin Rattus norvegicus 171-181 7996199-2 1994 Using fura-2-based imaging we found that Ca2+ transients evoked by depolarization with 50 mM KCl were suppressed by the mu-opioid receptor agonist D-Ala2,N-MePhe4,Gly5-ol-enkephalin (DAMGO) and less effectively by the kappa-receptor agonist U-69,593. n-mephe4 154-162 proenkephalin Rattus norvegicus 171-181 7882016-3 1994 GABA-like immunoreactive neuronal somata were post-synaptic to both the enkephalin-like immunoreactive and the non-immunoreactive axon terminals. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 72-82 7882016-4 1994 Enkephalin-like immunoreactive axon terminals were found to make synapses with GABA-like immunoreactive and non-immunoreactive dendrites. gamma-Aminobutyric Acid 79-83 proenkephalin Rattus norvegicus 0-10 7756949-1 1994 The enkephalin analogue peptide IKB-901 containing epsilon-ACA and cysteine with the modified S-end shows an analgetic activity in rats (1 micron, intrathecally and 5 mg/kg intravenously) and in cats (0.35 and 0.7 mg/kg intravenously). ikb-901 32-39 proenkephalin Rattus norvegicus 4-14 7756949-1 1994 The enkephalin analogue peptide IKB-901 containing epsilon-ACA and cysteine with the modified S-end shows an analgetic activity in rats (1 micron, intrathecally and 5 mg/kg intravenously) and in cats (0.35 and 0.7 mg/kg intravenously). Cysteine 67-75 proenkephalin Rattus norvegicus 4-14 7532816-0 1994 Involvement of endogenous nitric oxide in non-adrenergic, non-cholinergic contraction elicited by [Met5]-enkephalin in rat isolated duodenum. Nitric Oxide 26-38 proenkephalin Rattus norvegicus 105-115 7532816-3 1994 The relaxation induced by ENK was blocked by naloxone, an opioid receptor antagonist, but not by tetrodotoxin (TTX). Naloxone 45-53 proenkephalin Rattus norvegicus 26-29 7862730-5 1994 Bilateral injection of morphine (0.1-20 nmol) and the mu-selective agonist D-Ala2,N-Me-Phe4,Gly5-ol-enkephalin (DAGO; 0.03-1 nmol) increased response latency on the hot plate test and decreased gnawing produced by tail pinch. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 112-116 proenkephalin Rattus norvegicus 100-110 7532816-4 1994 The contractile response of the duodenum to ENK was blocked by TTX but not by naloxone. Tetrodotoxin 63-66 proenkephalin Rattus norvegicus 44-47 7532816-8 1994 Thus, endogenous NO and prostaglandins are involved in the contractile response to ENK. Prostaglandins 24-38 proenkephalin Rattus norvegicus 83-86 7534387-0 1994 Dopaminergic and muscarinic regulation of striatal enkephalin and substance P messenger RNAs following striatal dopamine denervation: effects of systemic and central administration of quinpirole and scopolamine. Dopamine 112-120 proenkephalin Rattus norvegicus 51-61 7534387-1 1994 Striatal dopamine depletion produces an increase in enkephalin and a decrease in substance P messenger RNAs. Dopamine 9-17 proenkephalin Rattus norvegicus 52-62 7534387-2 1994 Subsequent systemic administration of either the D2 dopamine agonist, quinpirole, or the muscarinic antagonist, scopolamine, results in the reduction of the lesion-induced elevation in striatal enkephalin messenger RNA. Dopamine 52-60 proenkephalin Rattus norvegicus 194-204 7534387-2 1994 Subsequent systemic administration of either the D2 dopamine agonist, quinpirole, or the muscarinic antagonist, scopolamine, results in the reduction of the lesion-induced elevation in striatal enkephalin messenger RNA. Quinpirole 70-80 proenkephalin Rattus norvegicus 194-204 7534387-2 1994 Subsequent systemic administration of either the D2 dopamine agonist, quinpirole, or the muscarinic antagonist, scopolamine, results in the reduction of the lesion-induced elevation in striatal enkephalin messenger RNA. Scopolamine 112-123 proenkephalin Rattus norvegicus 194-204 7534387-4 1994 To dissociate these possibilities, we have compared the effects of systemic and central administration of quinpirole and scopolamine on striatal enkephalin and substance P messenger RNAs using in situ hybridization histochemistry. Quinpirole 106-116 proenkephalin Rattus norvegicus 145-155 7534387-4 1994 To dissociate these possibilities, we have compared the effects of systemic and central administration of quinpirole and scopolamine on striatal enkephalin and substance P messenger RNAs using in situ hybridization histochemistry. Scopolamine 121-132 proenkephalin Rattus norvegicus 145-155 7534387-5 1994 Systemic administration of both quinpirole and scopolamine blocked the elevation of striatal enkephalin messenger RNA normally observed in 6-hydroxydopamine-lesioned rats. Quinpirole 32-42 proenkephalin Rattus norvegicus 93-103 7534387-5 1994 Systemic administration of both quinpirole and scopolamine blocked the elevation of striatal enkephalin messenger RNA normally observed in 6-hydroxydopamine-lesioned rats. Scopolamine 47-58 proenkephalin Rattus norvegicus 93-103 7534387-5 1994 Systemic administration of both quinpirole and scopolamine blocked the elevation of striatal enkephalin messenger RNA normally observed in 6-hydroxydopamine-lesioned rats. Oxidopamine 139-156 proenkephalin Rattus norvegicus 93-103 7534387-8 1994 In contrast to systemic administration, intraventricular and intrastriatal infusion of quinpirole but not scopolamine prevented the lesion-induced change in striatal enkephalin messenger RNA. Quinpirole 87-97 proenkephalin Rattus norvegicus 166-176 7534387-10 1994 Together, these data suggest that changes in D2 receptor activation directly in the striatum are responsible for the effects of quinpirole on enkephalin messenger RNA. Quinpirole 128-138 proenkephalin Rattus norvegicus 142-152 7534387-11 1994 In contrast, the effect of systemic scopolamine on striatal enkephalin and substance P messenger RNAs may not be mediated within the striatum. Scopolamine 36-47 proenkephalin Rattus norvegicus 60-70 7820070-10 1994 These results also suggest that D2 dopamine antagonists indirectly down-regulate opioid receptors by increasing the expression of proenkephalin mRNA, thereby increasing enkephalin which, in turn, decreases opioid receptors in striatum. Dopamine 35-43 proenkephalin Rattus norvegicus 130-143 7535410-3 1994 Following repeated administration of the D-2 antagonists, eticlopride and haloperidol, there was an increase in enkephalin and GAD67 mRNA levels and parallel decrease in that of substance P. These were unaffected by co-administration of gamma-vinyl GABA. eticlopride 58-69 proenkephalin Rattus norvegicus 112-122 7535410-3 1994 Following repeated administration of the D-2 antagonists, eticlopride and haloperidol, there was an increase in enkephalin and GAD67 mRNA levels and parallel decrease in that of substance P. These were unaffected by co-administration of gamma-vinyl GABA. Haloperidol 74-85 proenkephalin Rattus norvegicus 112-122 7828644-2 1994 kelatorphan (2.5, 5, 10 and 15 mg/kg), a mixed inhibitor of enkephalin degrading enzymes, was studied in a rat model of peripheral unilateral mononeuropathy (chronic constriction of the common sciatic nerve). kelatorphan 0-11 proenkephalin Rattus norvegicus 60-70 7699567-3 1994 The selective mu-receptor agonist D-Ala2-NMe-Phe4, Gly-ol5-enkephalin was the least potent of all peptides tested. d-ala2-nme-phe4 34-49 proenkephalin Rattus norvegicus 59-69 7808596-12 1994 Low levels of PC3 and PENK were detected in the AM of rats treated for 90 min with SAL or LPS. sal 83-86 proenkephalin Rattus norvegicus 22-26 7820070-0 1994 Irreversible blockade of D2 dopamine receptors by fluphenazine-N-mustard increases D2 dopamine receptor mRNA and proenkephalin mRNA and decreases D1 dopamine receptor mRNA and mu and delta opioid receptors in rat striatum. fluphenazine-N-mustard 50-72 proenkephalin Rattus norvegicus 113-126 7834330-3 1994 In contrast, KCl increased media [Met5]enkephalin (ME) immunoreactivity 2-fold in these cultures, equivalent to stimulation with Fsk or PMA. Potassium Chloride 13-16 proenkephalin Rattus norvegicus 39-49 7820070-10 1994 These results also suggest that D2 dopamine antagonists indirectly down-regulate opioid receptors by increasing the expression of proenkephalin mRNA, thereby increasing enkephalin which, in turn, decreases opioid receptors in striatum. Dopamine 35-43 proenkephalin Rattus norvegicus 133-143 7820071-3 1994 The activator of protein kinase C tetradecanoylphorbolacetate (0.001-1 microM) increased the level of proenkephalin-mRNA in a concentration dependent manner. Tetradecanoylphorbol Acetate 34-61 proenkephalin Rattus norvegicus 102-115 7820071-5 1994 8-Bromoadenosine 3",5"-cyclic monophosphate (0.01-1 mM) also enhanced the expression of the proenkephalin gene. 8-Bromo Cyclic Adenosine Monophosphate 0-43 proenkephalin Rattus norvegicus 92-105 7820071-8 1994 While the effect of 8Br.cAMP (1 mM) on PEnk-mRNA was enhanced, that of tetradecanoylphorbolacetate (0.1 microM) was abolished. 8-Bromoadenosine 5'-monophosphate 20-23 proenkephalin Rattus norvegicus 39-43 7820071-8 1994 While the effect of 8Br.cAMP (1 mM) on PEnk-mRNA was enhanced, that of tetradecanoylphorbolacetate (0.1 microM) was abolished. Cyclic AMP 24-28 proenkephalin Rattus norvegicus 39-43 7812626-19 1994 A small inhibition produced by the selective delta-receptor agonist,Tyr-D-Pen-Gly-Phe-D-Pen-enkephalin (3 micro M, 26 +/- 4%, n = 14), was antagonized by naloxone (1 micro M), but not by the selective delta-receptor antagonist, naltrindole (10 nM), suggesting non-specific micro-receptor activation by this agonist. Naloxone 154-162 proenkephalin Rattus norvegicus 92-102 7812626-23 1994 Met-enkephalin inhibited postsynaptic potentials by 55 +/- 5% (n = 12) in the presence of 6-cyano-7-nitroquinoxaline-2,3-dione (10 microM, predominantly GABAergic component).Met-enkephalin did not affect the response to GABA applied directly by pressure ejection, indicating that opioids exclusively inhibited presynaptic release of GABA. gamma-Aminobutyric Acid 153-157 proenkephalin Rattus norvegicus 4-14 7812626-19 1994 A small inhibition produced by the selective delta-receptor agonist,Tyr-D-Pen-Gly-Phe-D-Pen-enkephalin (3 micro M, 26 +/- 4%, n = 14), was antagonized by naloxone (1 micro M), but not by the selective delta-receptor antagonist, naltrindole (10 nM), suggesting non-specific micro-receptor activation by this agonist. naltrindole 228-239 proenkephalin Rattus norvegicus 92-102 7812626-23 1994 Met-enkephalin inhibited postsynaptic potentials by 55 +/- 5% (n = 12) in the presence of 6-cyano-7-nitroquinoxaline-2,3-dione (10 microM, predominantly GABAergic component).Met-enkephalin did not affect the response to GABA applied directly by pressure ejection, indicating that opioids exclusively inhibited presynaptic release of GABA. gamma-Aminobutyric Acid 220-224 proenkephalin Rattus norvegicus 4-14 7812626-23 1994 Met-enkephalin inhibited postsynaptic potentials by 55 +/- 5% (n = 12) in the presence of 6-cyano-7-nitroquinoxaline-2,3-dione (10 microM, predominantly GABAergic component).Met-enkephalin did not affect the response to GABA applied directly by pressure ejection, indicating that opioids exclusively inhibited presynaptic release of GABA. 6-Cyano-7-nitroquinoxaline-2,3-dione 90-126 proenkephalin Rattus norvegicus 4-14 7812626-24 1994 Met-enkephalin (10-30 micro M) inhibited postsynaptic potentials by 48 +/- 6% (n = 11) in the presence of bicuculline (30 micro M, predominantly glutamatergic component). Bicuculline 106-117 proenkephalin Rattus norvegicus 4-14 7812626-25 1994 In the presence of both bicuculline and 6-cyano-7-nitroquinoxaline-2,3-dione,Met-enkephalin inhibited the small residual component of the synaptic potential by 42 +/- 15% (n = 2).7. Bicuculline 24-35 proenkephalin Rattus norvegicus 81-91 8076927-7 1994 mu-Opiate receptor stimulation of hypothalamic explants in vitro with the specific mu-opiate receptor agonist ligand [D-Ala2,N-Me-Phe4,Gly-ol]-Enkephalin resulted in 8.2% and 16.9% inhibition of corticotropin-releasing hormone release in sham-resected and unoperated control rats, respectively. n-me-phe4 125-134 proenkephalin Rattus norvegicus 143-153 7812626-25 1994 In the presence of both bicuculline and 6-cyano-7-nitroquinoxaline-2,3-dione,Met-enkephalin inhibited the small residual component of the synaptic potential by 42 +/- 15% (n = 2).7. 6-Cyano-7-nitroquinoxaline-2,3-dione 40-76 proenkephalin Rattus norvegicus 81-91 8076927-7 1994 mu-Opiate receptor stimulation of hypothalamic explants in vitro with the specific mu-opiate receptor agonist ligand [D-Ala2,N-Me-Phe4,Gly-ol]-Enkephalin resulted in 8.2% and 16.9% inhibition of corticotropin-releasing hormone release in sham-resected and unoperated control rats, respectively. gly-ol 135-141 proenkephalin Rattus norvegicus 143-153 8076927-8 1994 In contrast, treatment of hypothalamic explants from bile duct-resected rats with [D-Ala2,N-Me-Phe4,Gly-ol]-Enkephalin resulted in a significant 22.5% increase in corticotropin-releasing hormone release. n-me-phe4 90-99 proenkephalin Rattus norvegicus 108-118 8076927-8 1994 In contrast, treatment of hypothalamic explants from bile duct-resected rats with [D-Ala2,N-Me-Phe4,Gly-ol]-Enkephalin resulted in a significant 22.5% increase in corticotropin-releasing hormone release. gly-ol 100-106 proenkephalin Rattus norvegicus 108-118 8083765-9 1994 To determine whether interactions between SCG neurons and their target tissues influence Enk expression, we disrupted them by treating neonatal rats with a single dose of 6-OHDA at P0. Oxidopamine 171-177 proenkephalin Rattus norvegicus 89-92 7981878-0 1994 Prefrontal corticostriatal afferents maintain increased enkephalin gene expression in the dopamine-denervated rat striatum. Dopamine 90-98 proenkephalin Rattus norvegicus 56-66 8035203-0 1994 Regulation of mu-opioid receptor mRNA in rat globus pallidus: effects of enkephalin increases induced by short- and long-term haloperidol administration. Haloperidol 126-137 proenkephalin Rattus norvegicus 73-83 7845552-4 1994 The mu receptor agonist ([D-Ala2, NMe-Phe4, Gly-ol]-Enkephalin (DAMGO)) increased the responsiveness of DGCs to perforant path stimulation, although it did not induce spontaneous activity in DGCs. nme-phe4 34-42 proenkephalin Rattus norvegicus 52-62 7953706-2 1994 NADPH-DA colocalized with immunoreactivity to tyrosine hydroxylase (TH), serotonin, vasoactive intestinal peptide (VIP), neuropeptide Y (NPY), methionine-enkephalin and somatostatin. NADP 0-5 proenkephalin Rattus norvegicus 154-164 7526302-1 1994 [D-Ser2,Leu5]-enkephalin-Thr6 (DSLET) and [D-Pen2,5]-enkephalin (DPDPE), both delta-agonists, stimulated the high affinity GTPase in the rat striatal membranes in a naltrindole-reversible manner. [d-ser2 0-7 proenkephalin Rattus norvegicus 14-24 7969776-8 1994 ENK, which has prolactin-releasing activity and is colocalized with dopamine, could mediate the positive short-loop feedback regulation and sustain elevated levels of prolactin in pregnant, pseudopregnant, lactating, and aged animals. Dopamine 68-76 proenkephalin Rattus norvegicus 0-3 7526302-1 1994 [D-Ser2,Leu5]-enkephalin-Thr6 (DSLET) and [D-Pen2,5]-enkephalin (DPDPE), both delta-agonists, stimulated the high affinity GTPase in the rat striatal membranes in a naltrindole-reversible manner. DSLET 31-36 proenkephalin Rattus norvegicus 14-24 7526302-1 1994 [D-Ser2,Leu5]-enkephalin-Thr6 (DSLET) and [D-Pen2,5]-enkephalin (DPDPE), both delta-agonists, stimulated the high affinity GTPase in the rat striatal membranes in a naltrindole-reversible manner. naltrindole 165-176 proenkephalin Rattus norvegicus 14-24 7526302-1 1994 [D-Ser2,Leu5]-enkephalin-Thr6 (DSLET) and [D-Pen2,5]-enkephalin (DPDPE), both delta-agonists, stimulated the high affinity GTPase in the rat striatal membranes in a naltrindole-reversible manner. naltrindole 165-176 proenkephalin Rattus norvegicus 53-63 7526265-5 1994 Neurons that possess GABA- but not glycine-immunoreactivity may contain neuropeptide Y, enkephalin, acetylcholine or NADPH diaphorase, and all of the cholinergic neurons appear to contain NADPH diaphorase. gamma-Aminobutyric Acid 21-25 proenkephalin Rattus norvegicus 88-98 8207425-4 1994 [Leu5]-Enkephalin and selective delta- and mu-, but not kappa-, opioid receptor agonists inhibit the FSK stimulation of adenylyl cyclase activity with the same potencies displayed in stimulating basal enzyme activity. Colforsin 101-104 proenkephalin Rattus norvegicus 7-17 7958733-6 1994 administration of the delta-selective agonist DPDPE ([D-Pen2,D-Pen2]enkephalin) produced stimulation of HPA activity, as shown by an increase in corticosterone release. Corticosterone 145-159 proenkephalin Rattus norvegicus 68-78 8089277-8 1994 Three main findings emerged from these experiments: 1) the mRNA was present in regions mediating both the therapeutic (analgesia) and the unwanted (respiratory depression, addiction) effects of morphine, 2) the mRNA was very densely expressed by neurons known to receive dense enkephalin-containing inputs, and 3) the dissociation between the presence of binding sites and absence of mRNA in some brain regions supports a presynaptic localization of mu opioid receptors in these areas. Morphine 194-202 proenkephalin Rattus norvegicus 277-287 8035345-11 1994 also enhanced endogenous enkephalin induced antiociception, but this potentiating effect, completely reversed by administration of naloxone (0.1 mg/kg s.c.), was about 2 times less effective than in the tail-flick assay. Naloxone 131-139 proenkephalin Rattus norvegicus 25-35 8088356-12 1994 RB 101, a systemically active mixed inhibitor of enkephalin-metabolising enzymes, significantly decreased Fos-like immunoreactivity induced by heat stimulation (19, 29 and 48% decreases as compared to control values at 10, 20 and 40 mg/kg i.v. RB 101 0-6 proenkephalin Rattus norvegicus 49-59 7863837-1 1994 Our previous studies have shown that seizure induced by injecting penicillin (0.24 mg/2 microliters) into hippocampus could be inhibited by electroacupuncture (EA) probably via decreasing enkephalin content in hippocampus. Penicillins 66-76 proenkephalin Rattus norvegicus 188-198 7936191-4 1994 Administration of gamma-hydroxybutyrate to the rats induced a dose-dependent decrease in the extracellular release of met-enkephalin. Sodium Oxybate 18-39 proenkephalin Rattus norvegicus 122-132 7936191-5 1994 In parallel, a dose- and time-dependent gamma-hydroxybutyrate-induced accumulation of met-enkephalin in striatum was observed. Sodium Oxybate 40-61 proenkephalin Rattus norvegicus 90-100 7936191-8 1994 Thus, a gamma-hydroxybutyrate mediating effect on met-enkephalin synthesis is suggested, most probably occurring via functional modulation of striatal dopamine synthesis and release. Sodium Oxybate 8-29 proenkephalin Rattus norvegicus 54-64 7936191-8 1994 Thus, a gamma-hydroxybutyrate mediating effect on met-enkephalin synthesis is suggested, most probably occurring via functional modulation of striatal dopamine synthesis and release. Dopamine 151-159 proenkephalin Rattus norvegicus 54-64 7936191-10 1994 In gamma-hydroxybutyrate-treated rats, striata exhibited a similar increase in met-enkephalin content. Sodium Oxybate 3-24 proenkephalin Rattus norvegicus 83-93 7936191-12 1994 Thus, striatal met-enkephalin accumulation could be attributed to the suppression of the dopaminergic impulse flow, due to gamma-hydroxybutyrate or to the action of 6-hydroxydopamine. Sodium Oxybate 123-144 proenkephalin Rattus norvegicus 19-29 7936191-12 1994 Thus, striatal met-enkephalin accumulation could be attributed to the suppression of the dopaminergic impulse flow, due to gamma-hydroxybutyrate or to the action of 6-hydroxydopamine. Oxidopamine 165-182 proenkephalin Rattus norvegicus 19-29 7936191-13 1994 In the extracellular spaces (microdialysis experiments), gamma-hydroxybutyrate administration induced identical modifications of met-enkephalin release in lesioned or non-lesioned striata. Sodium Oxybate 57-78 proenkephalin Rattus norvegicus 133-143 7936191-15 1994 From a functional point of view, the dopaminergic D2 receptor blockade or the gamma-hydroxybutyrate-induced inhibition of dopamine release could be considered to induce similar results, with identical consequences on striatal met-enkephalin accumulation and release. Sodium Oxybate 78-99 proenkephalin Rattus norvegicus 230-240 7936191-15 1994 From a functional point of view, the dopaminergic D2 receptor blockade or the gamma-hydroxybutyrate-induced inhibition of dopamine release could be considered to induce similar results, with identical consequences on striatal met-enkephalin accumulation and release. Dopamine 37-45 proenkephalin Rattus norvegicus 230-240 7936191-16 1994 These results suggest that gamma-hydroxybutyrate-induced modifications in met-enkephalin release, presumably potentiated by 6-hydroxydopamine treatment, act via a functional modification of the nigrostriatal dopaminergic pathway. Sodium Oxybate 27-48 proenkephalin Rattus norvegicus 78-88 7936191-16 1994 These results suggest that gamma-hydroxybutyrate-induced modifications in met-enkephalin release, presumably potentiated by 6-hydroxydopamine treatment, act via a functional modification of the nigrostriatal dopaminergic pathway. Oxidopamine 124-141 proenkephalin Rattus norvegicus 78-88 8186271-1 1994 Leucine enkephalin (1 mM) was reacted with mushroom tyrosinase under reductive conditions (ascorbic acid, 50 mM). Ascorbic Acid 91-104 proenkephalin Rattus norvegicus 8-18 8046774-0 1994 Met5-enkephalin is localized within axon terminals in the subfornical organ: vascular contacts and interactions with neurons containing gamma-aminobutyric acid. gamma-Aminobutyric Acid 136-159 proenkephalin Rattus norvegicus 5-15 8046774-1 1994 Met5-enkephalin inhibits sodium and water excretion and antagonizes the central actions of angiotensin II in subfornical organ of rat brain. Sodium 25-31 proenkephalin Rattus norvegicus 5-15 7913003-4 1994 Since striatal D2 receptor-mediated inhibition of adenylate cyclase activity, in contrast to its activation through D1 receptors, is not present in the prenatal period, this study indicates that the tonic inhibitory effect of DA on striatal ppEnk mRNA synthesis is dependent on the presence of adenylate cyclase-coupled D2 receptors which gradually develops postnatally and further supports the idea that striatal D1 and D2 DA receptors have bidirectional effects on enkephalin synthesis in this brain area. Dopamine 226-228 proenkephalin Rattus norvegicus 467-477 8046774-1 1994 Met5-enkephalin inhibits sodium and water excretion and antagonizes the central actions of angiotensin II in subfornical organ of rat brain. Water 36-41 proenkephalin Rattus norvegicus 5-15 8046774-11 1994 The targets of enkephalin-immunoreactive terminals were either unlabeled or GABA-labeled dendrites of local neurons. gamma-Aminobutyric Acid 76-80 proenkephalin Rattus norvegicus 15-25 8046774-12 1994 Enkephalin was also co-localized with GABA in perikarya and in axon terminals. gamma-Aminobutyric Acid 38-42 proenkephalin Rattus norvegicus 0-10 8046774-14 1994 GABA-immunoreactive terminals formed symmetric synapses on unlabeled dendrites some of which also received convergent input from terminals containing enkephalin. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 150-160 8046774-15 1994 Additionally, the enkephalin-immunoreactive terminals were closely apposed to GABA-labeled and unlabeled terminals. gamma-Aminobutyric Acid 78-82 proenkephalin Rattus norvegicus 18-28 8046774-17 1994 Moreover, the observed dual localization and pre- and postsynaptic associations between neurons containing Met5-enkephalin and GABA indicate that inhibitory effects of opioids in the subfornical organ may be mediated or potentiated by GABA. gamma-Aminobutyric Acid 235-239 proenkephalin Rattus norvegicus 112-122 8177908-1 1994 Effects were determined of chronic administration and withdrawal of a highly selective kappa-opioid receptor agonist, U-50,488H, on methionine-enkephalin levels in central and peripheral tissues of male Sprague-Dawley rats. u-50 118-122 proenkephalin Rattus norvegicus 143-153 8177908-1 1994 Effects were determined of chronic administration and withdrawal of a highly selective kappa-opioid receptor agonist, U-50,488H, on methionine-enkephalin levels in central and peripheral tissues of male Sprague-Dawley rats. 488h 123-127 proenkephalin Rattus norvegicus 143-153 8177908-4 1994 Methionine-enkephalin concentration increased in the hippocampus of U-50,488H-tolerant-dependent rats, whereas in abstinent rats, its level was elevated only in the hypothalamus. 488h 73-77 proenkephalin Rattus norvegicus 11-21 8177908-6 1994 Among peripheral tissues, methionine-enkephalin concentration decreased in the adrenal gland of U-50,488H-tolerant-dependent rats. 488h 101-105 proenkephalin Rattus norvegicus 37-47 8177908-7 1994 In the U-50,488H-abstinent rats, methionine-enkephalin concentration was elevated in the heart. 488h 12-16 proenkephalin Rattus norvegicus 44-54 8177908-8 1994 In tissues of morphine- and U-50,488H-tolerant-dependent and abstinent rats methionine-enkephalin concentrations were affected differentially, suggesting inherent differences in mu- and kappa-opiate-mediated tolerance-dependence and abstinence processes. Morphine 14-22 proenkephalin Rattus norvegicus 87-97 7912401-6 1994 The expression of adenosine A2a receptors by enkephalin cells in striatum suggests that adenosine may play a role in modulating the activity of GABA/enkephalin striatopallidal neurones through interaction with A2a receptors. Adenosine 18-27 proenkephalin Rattus norvegicus 45-55 7515821-0 1994 delta-9-Tetrahydrocannabinol regulates substance P and enkephalin mRNAs levels in the caudate-putamen. Dronabinol 0-28 proenkephalin Rattus norvegicus 55-65 8200414-0 1994 Involvement of glutamate receptors in the striatal enkephalin-induced dopamine release. Dopamine 70-78 proenkephalin Rattus norvegicus 51-61 8200414-1 1994 In anesthetized rats, the intrastriatal infusion of the delta-opioid receptor agonist, [D-Pen2,D-Pen5]enkephalin, increased the extracellular concentration of dopamine. Dopamine 159-167 proenkephalin Rattus norvegicus 102-112 8200422-6 1994 In contrast, only one withdrawal symptom (tremor) was significant in rats treated with the mixed inhibitor of enkephalin-degrading enzymes, RB 101 (1.20 mg/120 microliters/h). RB 101 140-146 proenkephalin Rattus norvegicus 110-120 7912401-6 1994 The expression of adenosine A2a receptors by enkephalin cells in striatum suggests that adenosine may play a role in modulating the activity of GABA/enkephalin striatopallidal neurones through interaction with A2a receptors. Adenosine 18-27 proenkephalin Rattus norvegicus 149-159 7515821-2 1994 We now report for the first time, by quantitative in situ hybridization, that a 3-week treatment with THC significantly increases in the adult rat caudate-putamen the messenger RNAs levels for substance P and enkephalin. Dronabinol 102-105 proenkephalin Rattus norvegicus 209-219 7912401-6 1994 The expression of adenosine A2a receptors by enkephalin cells in striatum suggests that adenosine may play a role in modulating the activity of GABA/enkephalin striatopallidal neurones through interaction with A2a receptors. gamma-Aminobutyric Acid 144-148 proenkephalin Rattus norvegicus 45-55 7912401-6 1994 The expression of adenosine A2a receptors by enkephalin cells in striatum suggests that adenosine may play a role in modulating the activity of GABA/enkephalin striatopallidal neurones through interaction with A2a receptors. gamma-Aminobutyric Acid 144-148 proenkephalin Rattus norvegicus 149-159 8023568-2 1994 Inhibition of the avoidance conditioning in a shuttle-box was observed in the first days of tetrapeptides microinjection; dopamine-like stimulatory effects, i.e. the stereotyped behaviour were seen during the development of chronic enkephalin effects. Dopamine 122-130 proenkephalin Rattus norvegicus 232-242 7517280-1 1994 Quantitative in situ hybridization histochemistry was used to examine the effects of unilateral 6-hydroxydopamine lesions of the ascending dopaminergic fibres on levels of mRNA encoding the neuropeptides enkephalin, dynorphin and substance P in subregions of the nucleus accumbens. Oxidopamine 96-113 proenkephalin Rattus norvegicus 204-214 7998343-0 1994 [Receptor selectivity profile of short enkephalin analogs containing D-ornithine at the second position of the molecule]. Ornithine 69-80 proenkephalin Rattus norvegicus 39-49 7998343-1 1994 The radioreceptor binding assay using a membrane fraction from the rat brain was applied to study binding activity and opiate receptor selectivity of truncated enkephalin analogs (with a free or modified C-terminal carboxyl group) bearing D-ornithine at the second position. Ornithine 239-250 proenkephalin Rattus norvegicus 160-170 7998343-5 1994 D-ornithine side chain prolongation by means of the attachment of some amino acid residues (methionine, leucine, proline, asparagine) led to the original branched enkephalin analogs. Ornithine 0-11 proenkephalin Rattus norvegicus 163-173 7998343-5 1994 D-ornithine side chain prolongation by means of the attachment of some amino acid residues (methionine, leucine, proline, asparagine) led to the original branched enkephalin analogs. Methionine 92-102 proenkephalin Rattus norvegicus 163-173 7998343-5 1994 D-ornithine side chain prolongation by means of the attachment of some amino acid residues (methionine, leucine, proline, asparagine) led to the original branched enkephalin analogs. Leucine 104-111 proenkephalin Rattus norvegicus 163-173 7998343-5 1994 D-ornithine side chain prolongation by means of the attachment of some amino acid residues (methionine, leucine, proline, asparagine) led to the original branched enkephalin analogs. Proline 113-120 proenkephalin Rattus norvegicus 163-173 7998343-5 1994 D-ornithine side chain prolongation by means of the attachment of some amino acid residues (methionine, leucine, proline, asparagine) led to the original branched enkephalin analogs. Asparagine 122-132 proenkephalin Rattus norvegicus 163-173 7907137-7 1994 Fifty percent (22 of 45) of pyramidal cells were hyperpolarized by [Met5]enkephalin; this resulted from an increase in potassium conductance, and it was mimicked by DPDPE and blocked by naltrindole. Potassium 119-128 proenkephalin Rattus norvegicus 73-83 7907137-7 1994 Fifty percent (22 of 45) of pyramidal cells were hyperpolarized by [Met5]enkephalin; this resulted from an increase in potassium conductance, and it was mimicked by DPDPE and blocked by naltrindole. naltrindole 186-197 proenkephalin Rattus norvegicus 73-83 7907137-8 1994 Five of seven nonpyramidal cells were hyperpolarized by [Met5]enkephalin; this was mimicked by DAMGO and blocked by CTOP. CTOP 116-120 proenkephalin Rattus norvegicus 62-72 8023568-3 1994 The most effective were the influences of ornitin-containing enkephalin analogues. ornitin 42-49 proenkephalin Rattus norvegicus 61-71 8013552-3 1994 The potassium (K+)-evoked acetylcholine release from the splanchnic nerve terminals was inhibited by morphine (10 microM), a mu-opioid receptor agonist, and [D-Pen2,D-Pen5]enkephalin (DPDPE, 1 and 10 microM), a delta-opioid receptor agonist. Potassium 4-13 proenkephalin Rattus norvegicus 172-182 8028772-0 1994 Serotonin innervation of enkephalin containing neurones in the rat spinal trigeminal nucleus. Serotonin 0-9 proenkephalin Rattus norvegicus 25-35 8013552-3 1994 The potassium (K+)-evoked acetylcholine release from the splanchnic nerve terminals was inhibited by morphine (10 microM), a mu-opioid receptor agonist, and [D-Pen2,D-Pen5]enkephalin (DPDPE, 1 and 10 microM), a delta-opioid receptor agonist. Acetylcholine 26-39 proenkephalin Rattus norvegicus 172-182 8013552-3 1994 The potassium (K+)-evoked acetylcholine release from the splanchnic nerve terminals was inhibited by morphine (10 microM), a mu-opioid receptor agonist, and [D-Pen2,D-Pen5]enkephalin (DPDPE, 1 and 10 microM), a delta-opioid receptor agonist. Morphine 101-109 proenkephalin Rattus norvegicus 172-182 8294934-7 1994 [D-Ala2,MePhe4,Gly(ol)5]Enkephalin (DAGO; 0.2 microgram, i.c.v. mephe4 8-14 proenkephalin Rattus norvegicus 24-34 7908881-5 1994 The inhibitory effect of dynorphin A-(1-13) on [3H]dopamine release, as well as that of [Met5]enkephalin on dopamine D1 receptor-stimulated adenylate cyclase appeared to be unchanged subsequent to repeated or chronic morphine treatment. Morphine 217-225 proenkephalin Rattus norvegicus 94-104 8025568-9 1994 Especially the relatively large pro-dynorphin and pro-enkephalin derived peptides, such as dynorphin 1-17 and BAM22, appeared to be very potent ligands for these opioid binding sites and were much more potent than smaller fragments, such as dynorphin 1-8, and Met- and Leu-enkephalin. dynorphin 1 91-102 proenkephalin Rattus norvegicus 54-64 8025568-9 1994 Especially the relatively large pro-dynorphin and pro-enkephalin derived peptides, such as dynorphin 1-17 and BAM22, appeared to be very potent ligands for these opioid binding sites and were much more potent than smaller fragments, such as dynorphin 1-8, and Met- and Leu-enkephalin. dynorphin 1 91-102 proenkephalin Rattus norvegicus 273-283 7812809-0 1994 Influence of halothane and methoxyflurane on regional brain and spinal cord concentrations of methionine-enkephalin in the rat. Methoxyflurane 27-41 proenkephalin Rattus norvegicus 105-115 8113970-5 1994 In addition, the release-inhibitory effect of the mu-selective agonist [D-Ala2,MePhe4,Gly-ol5]-enkephalin on the K(+)-induced [3H]noradrenaline release remained unaffected (EC50, 10-12 nM; maximal effect, 80-90%). mephe4 79-85 proenkephalin Rattus norvegicus 95-105 8113970-5 1994 In addition, the release-inhibitory effect of the mu-selective agonist [D-Ala2,MePhe4,Gly-ol5]-enkephalin on the K(+)-induced [3H]noradrenaline release remained unaffected (EC50, 10-12 nM; maximal effect, 80-90%). 3h]noradrenaline 127-143 proenkephalin Rattus norvegicus 95-105 8113971-1 1994 This study characterized the prototypic "minimum structure" enkephalin SC-39566 [2,6-dimethyl-L-tyrosinyl-D-alanine-(3-phenyl-1-propyl)-amide hydrochloride]. 2,6-dimethyl-l-tyrosinyl-d-alanine-(3-phenyl-1-propyl)-amide hydrochloride 81-155 proenkephalin Rattus norvegicus 60-70 8113975-3 1994 In this study, we systematically examined the effects of cations and guanine nucleotides on the binding of mu-agonist [D-Ala2, N-Me-Phe4, Met-(O)5-ol]enkephalin in rat spinal cord and brain membranes. Guanine Nucleotides 69-88 proenkephalin Rattus norvegicus 150-160 8113975-3 1994 In this study, we systematically examined the effects of cations and guanine nucleotides on the binding of mu-agonist [D-Ala2, N-Me-Phe4, Met-(O)5-ol]enkephalin in rat spinal cord and brain membranes. n-me-phe4 127-136 proenkephalin Rattus norvegicus 150-160 8113975-3 1994 In this study, we systematically examined the effects of cations and guanine nucleotides on the binding of mu-agonist [D-Ala2, N-Me-Phe4, Met-(O)5-ol]enkephalin in rat spinal cord and brain membranes. met-(o)5-ol 138-149 proenkephalin Rattus norvegicus 150-160 7507399-4 1994 Met-enkephalin concentrations were significantly elevated in the pons and medulla of intact DDC-treated animals, and in the POA of both intact- and castrated DDC-treated animals. Ditiocarb 92-95 proenkephalin Rattus norvegicus 4-14 7507399-4 1994 Met-enkephalin concentrations were significantly elevated in the pons and medulla of intact DDC-treated animals, and in the POA of both intact- and castrated DDC-treated animals. Ditiocarb 158-161 proenkephalin Rattus norvegicus 4-14 8113989-3 1994 The mu-selective opioid agonist [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO) inhibited vasodilator responses to sensory-motor nerve stimulation. n-me-phe4 40-49 proenkephalin Rattus norvegicus 59-69 7532097-2 1994 Regulation by the beta-adrenergic receptor was demonstrated by exposure of striatal and cortical astrocytes to isoproterenol, which resulted in increased content of mRNAs for nerve growth factor (NGF), brain-derived neurotrophic factor, and proenkephalin (PE), as well as NGF and Met-enkephalin. Isoproterenol 111-124 proenkephalin Rattus norvegicus 241-254 7532097-2 1994 Regulation by the beta-adrenergic receptor was demonstrated by exposure of striatal and cortical astrocytes to isoproterenol, which resulted in increased content of mRNAs for nerve growth factor (NGF), brain-derived neurotrophic factor, and proenkephalin (PE), as well as NGF and Met-enkephalin. Isoproterenol 111-124 proenkephalin Rattus norvegicus 256-258 7812809-3 1994 In halothane-exposed animals, Met-enkephalin concentrations in pit and across CNS areas studied were significantly lower at 2 h following anesthetic exposure than in control animals. Halothane 3-12 proenkephalin Rattus norvegicus 34-44 7812809-5 1994 Concentrations of Met-enkephalin in all areas studied except spinal cord returned to basal levels by 24 h following halothane exposure. Halothane 116-125 proenkephalin Rattus norvegicus 22-32 7812809-6 1994 Exposure to methoxyflurane resulted in less dramatic changes in Met-enkephalin concentrations across CNS regions examined. Methoxyflurane 12-26 proenkephalin Rattus norvegicus 68-78 7812809-7 1994 Exposure to methoxyflurane resulted in significant decreases in Met-enkephalin levels in olfactory bulb, thalamus, and hippocampus only. Methoxyflurane 12-26 proenkephalin Rattus norvegicus 68-78 7700858-3 1994 Analgesia was dose dependent, and at 1 microgram the two analogues, the mu-selective enkephalin analogue DAMGO (Tyr-D-Ala-Gly-N-Me-Phe-Gly-ol), and morphine, all produced analgesia lasting between 40 and 60 min. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 112-141 proenkephalin Rattus norvegicus 85-95 8275961-6 1994 This in vivo expression of proenkephalin was enhanced by adrenaline. Epinephrine 57-67 proenkephalin Rattus norvegicus 27-40 8307125-10 1994 Met-enkephalin (3-10 microM) reduced depolarization-evoked release of GABA from terminals in slices prepared from rat globus pallidus (IC50, 0.38 microM). gamma-Aminobutyric Acid 70-74 proenkephalin Rattus norvegicus 4-14 8159434-2 1994 Intravenous injection of Kelatorphan (5, 10 and 20 mg/kg), an inhibitor of multiple enkephalin-degrading enzymes, 20 min before noxious stimulation reduced the overall number of dorsal horn neurons expressing c-FOS and NGF1-A by up to 20-30%. kelatorphan 25-36 proenkephalin Rattus norvegicus 84-94 7507060-10 1993 After pallidal injections with OX7-saporin, the density of striatal enkephalin-labeled cells decreased (20% loss, P < 0.01), while that of substance P-labeled cells remained unchanged. OX7-saporin 31-42 proenkephalin Rattus norvegicus 68-78 8118696-1 1993 The opioid growth factor, [Met5]-enkephalin, is an inhibitory agent of cell proliferation and maturation that interacts with the zeta (zeta) opioid receptor to modulate growth. [met5] 26-32 proenkephalin Rattus norvegicus 33-43 8253772-3 1993 Recovery of this protein was blocked by the nonselective opioid antagonist naloxone and the highly mu-selective agonist [D-Ala2,N-methyl-Phe4,Glyol5]-enkephalin but not by the highly delta-selective agonist [D-Pen2,4"-Cl-Phe4,D-Pen5]enkephalin when these compounds were added as competitors at the binding step. n-methyl-phe4 128-141 proenkephalin Rattus norvegicus 150-160 7694844-1 1993 Single- and double-labeling immunocytochemistry was used to demonstrate that the tuberoinfundibular dopaminergic (TIDA) neurons of lactating rats, in contrast to those of male or female rats on any day of the estrous cycle, synthesize enkephalin which is colocalized with dopamine. Dopamine 100-108 proenkephalin Rattus norvegicus 235-245 7694844-2 1993 Each enkephalin-immunopositive perikaryon in the dorsomedial and ventrolateral subdivisions of the arcuate nucleus contains dopamine; therefore, the median eminence of lactating rats contains high levels of enkephalin compared to male or female rats. Dopamine 124-132 proenkephalin Rattus norvegicus 5-15 7694844-3 1993 It has been shown that endogenous opiates, including enkephalin, stimulate PRL secretion by reversing the inhibitory action of dopamine at the level of the TIDA neurons. Dopamine 127-135 proenkephalin Rattus norvegicus 53-63 7694844-4 1993 The present findings suggest that enkephalin, coproduced with dopamine in TIDA neurons of lactating rats, may be an endogenous source for this action and maintain elevated PRL and milk secretion during the nonsuckling periods of lactation. Dopamine 62-70 proenkephalin Rattus norvegicus 34-44 8290027-4 1993 Injections of phenamine and haloperidol were accompanied by a decrease in the content of dopamine in the striatum and an increase in the level of DOPAC; the injections of enkephalin and naloxone induced changes of the reverse order. Amphetamine 14-23 proenkephalin Rattus norvegicus 171-181 8309539-7 1993 The most marked difference between the innervation patterns from enkephalin- and GABA-immunoreactive axons was the presence of bundles of varicose axons in conjunction with the basket-like aggregation of enkephalin-immunoreactive nerve terminals. gamma-Aminobutyric Acid 81-85 proenkephalin Rattus norvegicus 204-214 8248174-6 1993 These peptides represent a class of opioid receptor ligands that we have termed acetalins (acetyl plus enkephalin). acetalins 80-89 proenkephalin Rattus norvegicus 103-113 8309964-0 1993 The effects of methionine-enkephalin and its related metabolites upon the duration of the dorsal immobility response in rats. Methionine 15-25 proenkephalin Rattus norvegicus 26-36 8309964-1 1993 The effects of SC injections of methionine-enkephalin (Met1-5-Enk) and its N-terminal and C-terminal fragments upon the duration of the dorsal immobility response (DIR) over a 60-min time course were investigated. Methionine 32-42 proenkephalin Rattus norvegicus 43-53 8287897-4 1993 Pretreatment with [D-Pen2,D-Pen5]enkephalin, a selective delta-opioid receptor agonist, partially but significantly reduced the antitussive effect of naltrindole. naltrindole 150-161 proenkephalin Rattus norvegicus 33-78 8290027-4 1993 Injections of phenamine and haloperidol were accompanied by a decrease in the content of dopamine in the striatum and an increase in the level of DOPAC; the injections of enkephalin and naloxone induced changes of the reverse order. Haloperidol 28-39 proenkephalin Rattus norvegicus 171-181 8290027-4 1993 Injections of phenamine and haloperidol were accompanied by a decrease in the content of dopamine in the striatum and an increase in the level of DOPAC; the injections of enkephalin and naloxone induced changes of the reverse order. Dopamine 89-97 proenkephalin Rattus norvegicus 171-181 8290027-4 1993 Injections of phenamine and haloperidol were accompanied by a decrease in the content of dopamine in the striatum and an increase in the level of DOPAC; the injections of enkephalin and naloxone induced changes of the reverse order. 3,4-Dihydroxyphenylacetic Acid 146-151 proenkephalin Rattus norvegicus 171-181 8255173-0 1993 Metrazole induction of c-fos and proenkephalin gene expression in the rat adrenal and hippocampus: pharmacological characterization. Pentylenetetrazole 0-9 proenkephalin Rattus norvegicus 33-46 8134308-1 1993 N-[1(R,S)-Carboxy-3-phenylpropyl]-Ala-Ala-Phe-p-aminobenzoate (cFP-AAF-pAB) is a potent, substrate-related, specific inhibitor of endopeptidase 24.15, an enzyme involved in the metabolism of bioactive peptides including bradykinin, neurotensin, and proenkephalin, and prodynorphin-derived enkephalin precursors. n-[1(r,s)-carboxy-3-phenylpropyl]-ala-ala-phe-p-aminobenzoate 0-61 proenkephalin Rattus norvegicus 252-262 8134310-4 1993 Homogenate binding studies, which used whole brain membranes, demonstrated that NPFF decreased the Bmax of mu binding sites (labeled by [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin) from 262 +/- 12 to 192 +/- 12 fmolmg protein, and increased the Kd from 1.1 to 2.3 nM. Tritium 137-139 proenkephalin Rattus norvegicus 163-173 8134310-4 1993 Homogenate binding studies, which used whole brain membranes, demonstrated that NPFF decreased the Bmax of mu binding sites (labeled by [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin) from 262 +/- 12 to 192 +/- 12 fmolmg protein, and increased the Kd from 1.1 to 2.3 nM. gly-ol5 155-162 proenkephalin Rattus norvegicus 163-173 8134310-6 1993 The density of mu opioid binding sites labeled by [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin was decreased in all brain areas measured except the corpus callosum, and there was no change in dynorphin mRNA or enkephalin mRNA in the caudate, the nucleus accumbens, or the ventral pallidum. Tritium 51-53 proenkephalin Rattus norvegicus 77-87 8134310-6 1993 The density of mu opioid binding sites labeled by [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin was decreased in all brain areas measured except the corpus callosum, and there was no change in dynorphin mRNA or enkephalin mRNA in the caudate, the nucleus accumbens, or the ventral pallidum. gly-ol5 69-76 proenkephalin Rattus norvegicus 77-87 8255173-8 1993 These results demonstrate that the MTZ induction of c-fos and Penk gene expression in the rat adrenal can be modulated by drugs acting in the CNS at NMDA receptors, in the periphery at postsynaptic cholinergic receptors and intracellularly at the calcium/calmodulin signal transduction pathway. Pentylenetetrazole 35-38 proenkephalin Rattus norvegicus 62-66 8115038-13 1993 The present results indicate that fetal nigral neurons transplanted to the 6-hydroxydopamine-lesioned striatum have differential effects on the activity of enkephalin-containing (i.e. mainly striatopallidal) and substance P- or dynorphin-containing (i.e. mainly striatonigral) neurons. Oxidopamine 75-92 proenkephalin Rattus norvegicus 156-166 8255173-9 1993 Furthermore, we provide additional evidence that MTZ-induction of c-fos and Penk mRNAs can be dissociated by drugs acting at these sites. Pentylenetetrazole 49-52 proenkephalin Rattus norvegicus 76-80 8255173-1 1993 We have previously reported that the administration of metrazole (MTZ) produces a sequential, dose-dependent induction of c-fos and proenkephalin (Penk) gene expression in the rat hippocampus and adrenal. Pentylenetetrazole 55-64 proenkephalin Rattus norvegicus 132-145 8255173-1 1993 We have previously reported that the administration of metrazole (MTZ) produces a sequential, dose-dependent induction of c-fos and proenkephalin (Penk) gene expression in the rat hippocampus and adrenal. Pentylenetetrazole 55-64 proenkephalin Rattus norvegicus 147-151 8255173-1 1993 We have previously reported that the administration of metrazole (MTZ) produces a sequential, dose-dependent induction of c-fos and proenkephalin (Penk) gene expression in the rat hippocampus and adrenal. Pentylenetetrazole 66-69 proenkephalin Rattus norvegicus 132-145 8255173-1 1993 We have previously reported that the administration of metrazole (MTZ) produces a sequential, dose-dependent induction of c-fos and proenkephalin (Penk) gene expression in the rat hippocampus and adrenal. Pentylenetetrazole 66-69 proenkephalin Rattus norvegicus 147-151 7693886-5 1993 The mu-opioid agonist D-Ala2-MePhe4-Gly-ol5-enkephalin (DAMGO; 1 microM) potentiated the response to bath application of N-methyl-D-aspartate (NMDA) and alpha-amino-3-hydroxy-5-methyl-4-isoxazole proprionic acid by 91 and 142%, respectively, in slices cut in the horizontal plane. N-Methylaspartate 121-141 proenkephalin Rattus norvegicus 44-54 8308742-2 1993 The electrophysiological action of the mu-opioid receptor-preferring agonist D-Ala2, MePhe4, Met(O)5-ol-enkephalin (FK 33-824) on synaptic transmission has been studied in area CA3 of organotypic rat hippocampal slice cultures. mephe4 85-91 proenkephalin Rattus norvegicus 104-114 7901035-0 1993 Antinociceptive effect of systemic PC 12, a prodrug mixed inhibitor of enkephalin-degrading enzymes, in normal and arthritic rats. PC 12 ester 35-40 proenkephalin Rattus norvegicus 71-81 8395567-7 1993 Of the membrane-associated [3H][D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin binding sites, 43 +/- 3% were recovered in the solubilized material. n-me-phe4 39-48 proenkephalin Rattus norvegicus 58-68 8395567-7 1993 Of the membrane-associated [3H][D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin binding sites, 43 +/- 3% were recovered in the solubilized material. gly5-ol 49-56 proenkephalin Rattus norvegicus 58-68 8395567-8 1993 Guanosine 5"-O-(3-thiotriphosphate), GTP, and guanosine 5"-O-(2-thiodiphosphate), but not adenylylimidodiphosphate, diminished [3H][D-Ala2,N-Me-Phe4,Gly5-ol] enkephalin binding in a concentration-dependent manner. Guanosine 5'-O-(3-Thiotriphosphate) 0-35 proenkephalin Rattus norvegicus 158-168 8395567-7 1993 Of the membrane-associated [3H][D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin binding sites, 43 +/- 3% were recovered in the solubilized material. Tritium 28-30 proenkephalin Rattus norvegicus 58-68 8395567-8 1993 Guanosine 5"-O-(3-thiotriphosphate), GTP, and guanosine 5"-O-(2-thiodiphosphate), but not adenylylimidodiphosphate, diminished [3H][D-Ala2,N-Me-Phe4,Gly5-ol] enkephalin binding in a concentration-dependent manner. guanosine 5'-O-(2-thiodiphosphate) 46-79 proenkephalin Rattus norvegicus 158-168 7693886-5 1993 The mu-opioid agonist D-Ala2-MePhe4-Gly-ol5-enkephalin (DAMGO; 1 microM) potentiated the response to bath application of N-methyl-D-aspartate (NMDA) and alpha-amino-3-hydroxy-5-methyl-4-isoxazole proprionic acid by 91 and 142%, respectively, in slices cut in the horizontal plane. N-Methylaspartate 143-147 proenkephalin Rattus norvegicus 44-54 7693886-5 1993 The mu-opioid agonist D-Ala2-MePhe4-Gly-ol5-enkephalin (DAMGO; 1 microM) potentiated the response to bath application of N-methyl-D-aspartate (NMDA) and alpha-amino-3-hydroxy-5-methyl-4-isoxazole proprionic acid by 91 and 142%, respectively, in slices cut in the horizontal plane. alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid 153-211 proenkephalin Rattus norvegicus 44-54 8012472-2 1993 A dose and time dependent increase of the striatal ENK level was observed after chronic administration of atypical neuroleptics SUL or MET as well as after chronic treatment with a classical cataleptogenic neuroleptic HAL. Haloperidol 218-221 proenkephalin Rattus norvegicus 51-54 8219035-2 1993 The overflow of [3H]serotonin elicited by high potassium (30 mM) in superfused slices of rat hippocampus was significantly inhibited in the presence of two agonists, mu-selective [D-Ala2,N-methyl-Phe4,Gly5ol]enkephalin (DAGO) and delta-selective [D-Pen2,D-Pen5]enkephalin (DPDPE) in control animals. Tritium 17-19 proenkephalin Rattus norvegicus 208-218 8219035-2 1993 The overflow of [3H]serotonin elicited by high potassium (30 mM) in superfused slices of rat hippocampus was significantly inhibited in the presence of two agonists, mu-selective [D-Ala2,N-methyl-Phe4,Gly5ol]enkephalin (DAGO) and delta-selective [D-Pen2,D-Pen5]enkephalin (DPDPE) in control animals. Tritium 17-19 proenkephalin Rattus norvegicus 261-271 8219035-2 1993 The overflow of [3H]serotonin elicited by high potassium (30 mM) in superfused slices of rat hippocampus was significantly inhibited in the presence of two agonists, mu-selective [D-Ala2,N-methyl-Phe4,Gly5ol]enkephalin (DAGO) and delta-selective [D-Pen2,D-Pen5]enkephalin (DPDPE) in control animals. Serotonin 20-29 proenkephalin Rattus norvegicus 208-218 8219035-2 1993 The overflow of [3H]serotonin elicited by high potassium (30 mM) in superfused slices of rat hippocampus was significantly inhibited in the presence of two agonists, mu-selective [D-Ala2,N-methyl-Phe4,Gly5ol]enkephalin (DAGO) and delta-selective [D-Pen2,D-Pen5]enkephalin (DPDPE) in control animals. Serotonin 20-29 proenkephalin Rattus norvegicus 261-271 8346825-2 1993 Intrathecally administered mu opioids, morphine (MOR), sufentanil (SUF), and [D-Ala2-N-Phe4,Gly-ol]-enkephalin (DAG), produced a dose-dependent inhibition of the tail flick and BP response with the relative activity being SUF = DAG > MOR. [d-ala2-n-phe4 77-91 proenkephalin Rattus norvegicus 100-110 8102782-0 1993 Metrazole induces the sequential activation of c-fos, proenkephalin, and tyrosine hydroxylase gene expression in the rat adrenal gland: modulation by glucocorticoid and adrenocorticotropic hormone. Pentylenetetrazole 0-9 proenkephalin Rattus norvegicus 54-67 8394905-4 1993 The hyperpolarization by [Met5]enkephalin was potentiated by the enkephalinase and aminopeptidase inhibitors thiorphan and bestatin and blocked by antagonists selective for either mu receptors ([Cys2,Tyr3,Orn5,Pen7]somatostatinamide) or delta receptors (N,N-bisallyl-Tyr-(aminoisobutyrate)2-Phe-Leu-OH). Thiorphan 109-118 proenkephalin Rattus norvegicus 31-41 8394905-4 1993 The hyperpolarization by [Met5]enkephalin was potentiated by the enkephalinase and aminopeptidase inhibitors thiorphan and bestatin and blocked by antagonists selective for either mu receptors ([Cys2,Tyr3,Orn5,Pen7]somatostatinamide) or delta receptors (N,N-bisallyl-Tyr-(aminoisobutyrate)2-Phe-Leu-OH). ubenimex 123-131 proenkephalin Rattus norvegicus 31-41 8394905-4 1993 The hyperpolarization by [Met5]enkephalin was potentiated by the enkephalinase and aminopeptidase inhibitors thiorphan and bestatin and blocked by antagonists selective for either mu receptors ([Cys2,Tyr3,Orn5,Pen7]somatostatinamide) or delta receptors (N,N-bisallyl-Tyr-(aminoisobutyrate)2-Phe-Leu-OH). cys2, 195-200 proenkephalin Rattus norvegicus 31-41 8394905-4 1993 The hyperpolarization by [Met5]enkephalin was potentiated by the enkephalinase and aminopeptidase inhibitors thiorphan and bestatin and blocked by antagonists selective for either mu receptors ([Cys2,Tyr3,Orn5,Pen7]somatostatinamide) or delta receptors (N,N-bisallyl-Tyr-(aminoisobutyrate)2-Phe-Leu-OH). orn5,pen7]somatostatinamide 205-232 proenkephalin Rattus norvegicus 31-41 8394905-4 1993 The hyperpolarization by [Met5]enkephalin was potentiated by the enkephalinase and aminopeptidase inhibitors thiorphan and bestatin and blocked by antagonists selective for either mu receptors ([Cys2,Tyr3,Orn5,Pen7]somatostatinamide) or delta receptors (N,N-bisallyl-Tyr-(aminoisobutyrate)2-Phe-Leu-OH). n,n-bisallyl-tyr-(aminoisobutyrate)2-phe-leu-oh 254-301 proenkephalin Rattus norvegicus 31-41 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 32-55 proenkephalin Rattus norvegicus 186-196 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 32-55 proenkephalin Rattus norvegicus 218-228 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 32-55 proenkephalin Rattus norvegicus 218-228 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 57-61 proenkephalin Rattus norvegicus 186-196 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 57-61 proenkephalin Rattus norvegicus 218-228 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. gamma-Aminobutyric Acid 57-61 proenkephalin Rattus norvegicus 218-228 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. Bicuculline 101-112 proenkephalin Rattus norvegicus 186-196 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. 2-hydroxysaclofen 145-162 proenkephalin Rattus norvegicus 186-196 8394905-5 1993 Synaptic potentials mediated by gamma-aminobutyric acid (GABA) acting at GABAA receptors (blocked by bicuculline) or GABAB receptors (blocked by 2-hydroxysaclofen) were reduced by [Met5]enkephalin, [D-Ala2,MePhe4,Gly5]enkephalin-ol and [D-Pen2,5]enkephalin. [d-ala2,mephe4 198-212 proenkephalin Rattus norvegicus 186-196 8346209-0 1993 The cAMP-response-element-binding protein interacts, but Fos protein does not interact, with the proenkephalin enhancer in rat striatum. Cyclic AMP 4-8 proenkephalin Rattus norvegicus 97-110 8346209-2 1993 This regulatory mechanism has been proposed, in part, because the cAMP response element 2 (CRE-2) site, the key DNA regulatory element within the proenkephalin second-messenger-inducible enhancer, avidly binds AP-1 proteins, including Fos, in vitro. Cyclic AMP 66-70 proenkephalin Rattus norvegicus 146-159 8346209-3 1993 However, we observe a dissociation in the time course of activation of c-fos and proenkephalin mRNA in rat striatum after administration of the dopamine D2 receptor antagonist haloperidol. Haloperidol 176-187 proenkephalin Rattus norvegicus 81-94 8393484-9 1993 Replacement of external sodium (80%) with Tris or choline caused (1) an outward current with a decrease in input conductance and (2) an approximately 50% decrease in the met-ENK-induced outward current with a shift in its reversal potential toward EK. Sodium 24-30 proenkephalin Rattus norvegicus 174-177 8393484-9 1993 Replacement of external sodium (80%) with Tris or choline caused (1) an outward current with a decrease in input conductance and (2) an approximately 50% decrease in the met-ENK-induced outward current with a shift in its reversal potential toward EK. Tromethamine 42-46 proenkephalin Rattus norvegicus 174-177 8393484-9 1993 Replacement of external sodium (80%) with Tris or choline caused (1) an outward current with a decrease in input conductance and (2) an approximately 50% decrease in the met-ENK-induced outward current with a shift in its reversal potential toward EK. Choline 50-57 proenkephalin Rattus norvegicus 174-177 8393484-11 1993 The met-ENK-induced outward current was almost totally abolished by combined sodium substitution and extracellular Ba2+ in an additive manner. Sodium 77-83 proenkephalin Rattus norvegicus 8-11 8393484-11 1993 The met-ENK-induced outward current was almost totally abolished by combined sodium substitution and extracellular Ba2+ in an additive manner. N-methyl-valyl-amiclenomycin 115-119 proenkephalin Rattus norvegicus 8-11 8232897-4 1993 To investigate the details of changes in calcitonin gene-related peptide- and methionine-enkephalin-immunoreactive fibers in the periventricular preoptic nucleus and medial preoptic nucleus, a grid, made up of 8 x 16 squares (one square corresponding to 50 x 50 microns in the true section), was set on the wall of the third ventricle, and immunoreactivity within each square was measured with an image analyser. Methionine 78-88 proenkephalin Rattus norvegicus 89-99 8232897-6 1993 In the estradiol-17 beta-treated rats, calcitonin gene-related peptide-immunoreactive fibers increased prominently at day 1, day 7 and day 10 in the periventricular preoptic nucleus, whereas methionine-enkephalin-immunoreactive fibers increased at day 1, day 14 and day 28 in the periventricular preoptic nucleus and medial preoptic nucleus. Methionine 191-201 proenkephalin Rattus norvegicus 202-212 8102782-3 1993 We investigated the relationships between the activation of the c-fos gene and the activation of the Penk and TH genes in both rat hippocampus and adrenal using a commonly used model, metrazole (MTZ)-induced convulsions. Pentylenetetrazole 184-193 proenkephalin Rattus norvegicus 101-105 8102782-3 1993 We investigated the relationships between the activation of the c-fos gene and the activation of the Penk and TH genes in both rat hippocampus and adrenal using a commonly used model, metrazole (MTZ)-induced convulsions. Pentylenetetrazole 195-198 proenkephalin Rattus norvegicus 101-105 7690765-0 1993 Methionine enkephalin-like immunoreactivity, substance P-like immunoreactivity and beta-endorphin-like immunoreactivity post-mortem stability in rat pituitary. Methionine 0-10 proenkephalin Rattus norvegicus 11-21 8353937-3 1993 The distribution of Leu-enk and beta-endo differed at each age examined from birth to postnatal day 12 (P12). Leucine 20-23 proenkephalin Rattus norvegicus 24-27 8373929-0 1993 Effect of mixed (RB 38A) and selective (RB 38B) inhibitors of enkephalin degrading enzymes on a model of depression in the rat. rb 38b 40-46 proenkephalin Rattus norvegicus 62-72 8373929-5 1993 On the other hand, naloxone (NLX) was found to facilitate the induction of learned helplessness, and to antagonize the effect of both enkephalin-degrading enzyme inhibitors. Naloxone 19-27 proenkephalin Rattus norvegicus 134-144 8373929-5 1993 On the other hand, naloxone (NLX) was found to facilitate the induction of learned helplessness, and to antagonize the effect of both enkephalin-degrading enzyme inhibitors. Naloxone 29-32 proenkephalin Rattus norvegicus 134-144 8361583-8 1993 These results indicate that enkephalin (i) participates in the pathophysiology of spinal cord trauma and (ii) suggest that the peptide is somehow functionally related with serotonin. Serotonin 172-181 proenkephalin Rattus norvegicus 28-38 8361335-2 1993 Recent evidence suggests that gonadal steroids are capable of regulating the expression of proenkephalin (PE) mRNA in the ventromedial hypothalamus (VMH) of female, but not male rats. Steroids 38-46 proenkephalin Rattus norvegicus 91-104 8393519-9 1993 The delta subtype receptors that bind [3H][D-Pen2,D-Pen5]enkephalin in neonatal or adult brain membranes were unaffected by 0.5-2.5 mg/kg buprenorphine treatment. Tritium 39-42 proenkephalin Rattus norvegicus 57-67 8393523-5 1993 Preincubation of rat cortical membranes with an IgG fraction isolated from antiserum OC2 was able to produce a marked reduction in the ability of the synthetic enkephalin [D-Ala2,D-Leu5] enkephalin (DADLE) (which interacts with delta and mu but not significantly with kappa receptors) to displace specific binding of [3H] diprenorphine (which binds to all of these sites), demonstrating a clear interaction of the mu and delta receptors with one or more variants of Go. 3h] diprenorphine 318-335 proenkephalin Rattus norvegicus 160-170 8393523-5 1993 Preincubation of rat cortical membranes with an IgG fraction isolated from antiserum OC2 was able to produce a marked reduction in the ability of the synthetic enkephalin [D-Ala2,D-Leu5] enkephalin (DADLE) (which interacts with delta and mu but not significantly with kappa receptors) to displace specific binding of [3H] diprenorphine (which binds to all of these sites), demonstrating a clear interaction of the mu and delta receptors with one or more variants of Go. 3h] diprenorphine 318-335 proenkephalin Rattus norvegicus 187-197 8393525-7 1993 This site also displayed nanomolar affinity for [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (DAGO), a mu-selective agonist, whereas its affinities for the delta-selective agonist [D-Pen2,5]-enkephalin and the kappa-selective agonist U-50488 were in the micromolar range. n-me-phe4 56-65 proenkephalin Rattus norvegicus 75-85 8393525-7 1993 This site also displayed nanomolar affinity for [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (DAGO), a mu-selective agonist, whereas its affinities for the delta-selective agonist [D-Pen2,5]-enkephalin and the kappa-selective agonist U-50488 were in the micromolar range. n-me-phe4 56-65 proenkephalin Rattus norvegicus 184-194 8393525-7 1993 This site also displayed nanomolar affinity for [D-Ala2,N-Me-Phe4,Gly-ol5]-enkephalin (DAGO), a mu-selective agonist, whereas its affinities for the delta-selective agonist [D-Pen2,5]-enkephalin and the kappa-selective agonist U-50488 were in the micromolar range. 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer 227-234 proenkephalin Rattus norvegicus 75-85 8395956-1 1993 An in vitro autoradiographic study was performed to characterize specific rat brain binding sites for non-opioid neuroleptic-like gamma-type endorphins, using [35S]Met-des-enkephalin-gamma-endorphin ([35S]Met-DE gamma E; [35]S-beta-endorphins(5-17)) with high specific activity as radioligand. Diethylstilbestrol 168-171 proenkephalin Rattus norvegicus 172-182 8353937-8 1993 The time course of development of Leu-enk and beta-endo innervation of the medial preoptic area suggests that the sexually dimorphic expression of opioid immunoreactivity occurs after preoptic neurons appear in their sexually dimorphic configuration. Leucine 34-37 proenkephalin Rattus norvegicus 38-41 8337918-7 1993 Significant effects could be demonstrated only on neurotensin and enkephalin mRNA after ether and immobilization stress. Ether 88-93 proenkephalin Rattus norvegicus 66-76 8499351-6 1993 Our results suggest the involvement of EOPs--including [Met5]-enkephalin--as autocrine/paracrine factors in the PG antagonism on OE-induced uterine DNA synthesis. Progesterone 112-114 proenkephalin Rattus norvegicus 62-72 8347898-5 1993 We report that rat nylon wool enriched splenocytes, purified NK cells, and interleukin-2 activated NK (A-NK) cells were capable of hydrolyzing the N-terminal Tyr residue from Met- and Leu-enkephalin as determined by high-performance liquid chromatography. nylon wool 19-29 proenkephalin Rattus norvegicus 188-198 8347898-5 1993 We report that rat nylon wool enriched splenocytes, purified NK cells, and interleukin-2 activated NK (A-NK) cells were capable of hydrolyzing the N-terminal Tyr residue from Met- and Leu-enkephalin as determined by high-performance liquid chromatography. Tyrosine 158-161 proenkephalin Rattus norvegicus 188-198 8347898-6 1993 The rate of Tyr cleavage from Met-enkephalin was approximately twice that of Leu-enkephalin for both splenocytes, NK, and A-NK cells. Tyrosine 12-15 proenkephalin Rattus norvegicus 34-44 8513136-1 1993 Dopamine exerts a tonic inhibitory control in the regulation of mRNA encoding preproenkephalin (PPE), the precursor of enkephalin, in the dorsal part of the rat striatum. Dopamine 0-8 proenkephalin Rattus norvegicus 84-94 8413825-3 1993 Free met-enkephalin was secreted from the cultures in significant quantities in response to nonspecific depolarisation with 56 mM potassium, by a mechanism dependent upon extracellular calcium. Potassium 130-139 proenkephalin Rattus norvegicus 9-19 8413825-3 1993 Free met-enkephalin was secreted from the cultures in significant quantities in response to nonspecific depolarisation with 56 mM potassium, by a mechanism dependent upon extracellular calcium. Calcium 185-192 proenkephalin Rattus norvegicus 9-19 8100047-0 1993 Comparison of immunohistochemical localization of [Met5] enkephalin-Arg6-Gly7-Leu8, vasoactive intestinal polypeptide and tyrosine hydroxylase in the major pelvic ganglion of the rat. arg6-gly7-leu8 68-82 proenkephalin Rattus norvegicus 57-67 8100047-7 1993 [Met5]Enkephalin-Arg6-Gly7-Leu8-immunoreactive principal neurons formed a minor subpopulation in the ganglion and were not immunoreactive for tyrosine hydroxylase. arg6-gly7-leu8 17-31 proenkephalin Rattus norvegicus 6-16 8386089-10 1993 Furthermore, the antinociceptive properties of [D-Tca1]CTAP were antagonized by (naltrindole-5"-isothiocyanate) (5"-NTII), an antagonist at the delta 2 opioid receptor subtype, but not by the delta 1 antagonist [D-Ala2,D-Leu5,Cys6]enkephalin (DALCE). [d-tca1]ctap 47-59 proenkephalin Rattus norvegicus 231-241 8487949-0 1993 Dopamine decreases striatal enkephalin turnover and proenkephalin messenger RNA abundance via D2 receptor activation in primary striatal cell cultures. Dopamine 0-8 proenkephalin Rattus norvegicus 52-65 8487949-3 1993 In these conditions, pharmacological treatment of the striatal neurons on the 10th day in vitro for 48 h with 10(-6) M dopamine induced a 50% decrease in preproenkephalin mRNA level concomitant with a 50% decrease in methionine enkephalin neuronal content. Dopamine 119-127 proenkephalin Rattus norvegicus 160-170 8487949-5 1993 The decrease in methionine enkephalin neuronal content induced by dopamine or bromocriptine was reversed by the simultaneous application of sulpiride (10(-6) M), a selective D2 antagonist. Dopamine 66-74 proenkephalin Rattus norvegicus 27-37 8487949-5 1993 The decrease in methionine enkephalin neuronal content induced by dopamine or bromocriptine was reversed by the simultaneous application of sulpiride (10(-6) M), a selective D2 antagonist. Bromocriptine 78-91 proenkephalin Rattus norvegicus 27-37 8487949-5 1993 The decrease in methionine enkephalin neuronal content induced by dopamine or bromocriptine was reversed by the simultaneous application of sulpiride (10(-6) M), a selective D2 antagonist. Sulpiride 140-149 proenkephalin Rattus norvegicus 27-37 8487949-7 1993 To ensure dopamine regulation of enkephalin secretion, shorter dopaminergic treatments were performed. Dopamine 10-18 proenkephalin Rattus norvegicus 33-43 8356473-4 1993 The results show that L-Enk content in the striatum and hypothalamus of rats exposed to hyperbaric oxygen environment were markedly higher than that of rats exposed to normobaric air and normoxic hyperbaric nitrox. Oxygen 99-105 proenkephalin Rattus norvegicus 24-27 8356473-4 1993 The results show that L-Enk content in the striatum and hypothalamus of rats exposed to hyperbaric oxygen environment were markedly higher than that of rats exposed to normobaric air and normoxic hyperbaric nitrox. nitrox 207-213 proenkephalin Rattus norvegicus 24-27 8386089-10 1993 Furthermore, the antinociceptive properties of [D-Tca1]CTAP were antagonized by (naltrindole-5"-isothiocyanate) (5"-NTII), an antagonist at the delta 2 opioid receptor subtype, but not by the delta 1 antagonist [D-Ala2,D-Leu5,Cys6]enkephalin (DALCE). 5"-ntii 113-120 proenkephalin Rattus norvegicus 231-241 1300504-0 1992 Differential increases of neurokinin B- and enkephalin-like immunoreactivities and their mRNAs after chronic haloperidol treatment in the rat. Haloperidol 109-120 proenkephalin Rattus norvegicus 44-54 8483796-1 1993 We examined experience-dependent alterations in the production of individual enkephalin metabolites during Leu-enkephalin hydrolysis in rat plasma in vitro. Leucine 107-110 proenkephalin Rattus norvegicus 77-87 8483796-1 1993 We examined experience-dependent alterations in the production of individual enkephalin metabolites during Leu-enkephalin hydrolysis in rat plasma in vitro. Leucine 107-110 proenkephalin Rattus norvegicus 111-121 8457842-0 1993 The role of wet-dog shakes during amygdaloid electrical and methionine-enkephalin kindling in the rat. Methionine 60-70 proenkephalin Rattus norvegicus 71-81 8458404-1 1993 Blockade of NMDA (N-methyl-D-aspartate) receptors for 5 h with MK 801 resulted in elevated levels of proenkephalin mRNA (up to 40% above vehicle-injected controls) in medial and anterior aspects of the caudate-putamen (mCPU and aCPU) and the nucleus accumbens (NAc). Dizocilpine Maleate 63-69 proenkephalin Rattus norvegicus 101-114 8095712-5 1993 Methionine enkephalin immunoreactivity was not consistently detectable until postnatal day 10 and 15 in the rostral and caudal globus pallidus, respectively. Methionine 0-10 proenkephalin Rattus norvegicus 11-21 8259344-5 1993 TRH, the enkephalin analog [D-Ala2-D-Leu5]enkephalin and rat prolactin do not inhibit the degradation of [pGlu-3H]LHRH by the soluble fraction of prostate homogenate; on the contrary, this is inhibited by graded doses of somatostatin. [d-ala2-d-leu5 27-41 proenkephalin Rattus norvegicus 9-19 7903185-11 1993 There was a marked increase in striatal methionine enkephalin immunostaining in lesioned animals, which was most pronounced in the dorsolateral part of the striatum (+ 150% compared to control values), while in the ventral part it was slight or non-existent. Methionine 40-50 proenkephalin Rattus norvegicus 51-61 8383062-0 1993 Cocaine-like discriminative stimulus properties of the delta-selective opioid receptor agonist, [D-Pen2,L-Pen5]enkephalin, in the rat. Cocaine 0-7 proenkephalin Rattus norvegicus 111-121 8374809-2 1993 The enkephalin-like neuronal elements were immunoreacted by the peroxidase-antiperoxidase method and silver-gold intensified, which showed strongly and was specific. silver-gold 101-112 proenkephalin Rattus norvegicus 4-14 8374809-4 1993 GABA-like neural somata were postsynaptic to both the enkephalin-like immunoreactive and the non-immunoreactive axon terminals. gamma-Aminobutyric Acid 0-4 proenkephalin Rattus norvegicus 54-64 8374809-5 1993 The enkephalin-like immunoreactive axon terminals were also found to synapse GABA-like immunoreactive dendrites. gamma-Aminobutyric Acid 77-81 proenkephalin Rattus norvegicus 4-14 7846380-0 1993 Changes in hypothalamic met-enkephalin levels of rats induced by painful stimulation and morphine treatment. Morphine 89-97 proenkephalin Rattus norvegicus 28-38 7846380-4 1993 In animals submitted to painful stimulus, morphine treatment induced a decrease in hypothalamic met-enkephalin levels. Morphine 42-50 proenkephalin Rattus norvegicus 100-110 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Norepinephrine 85-99 proenkephalin Rattus norvegicus 18-31 1489252-0 1992 Synthesis and inhibitory activities against enkephalin degrading aminopeptidase of H-Trp(Nps)-Lys-OMe analogues bearing chelating groups. h-trp 83-88 proenkephalin Rattus norvegicus 44-54 1489252-0 1992 Synthesis and inhibitory activities against enkephalin degrading aminopeptidase of H-Trp(Nps)-Lys-OMe analogues bearing chelating groups. lys-ome 94-101 proenkephalin Rattus norvegicus 44-54 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Nicotine 24-32 proenkephalin Rattus norvegicus 105-115 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Nicotine 24-32 proenkephalin Rattus norvegicus 223-233 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Pilocarpine 34-45 proenkephalin Rattus norvegicus 105-115 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Pilocarpine 34-45 proenkephalin Rattus norvegicus 223-233 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Reserpine 50-59 proenkephalin Rattus norvegicus 105-115 1369586-3 1992 Acute administration of nicotine, pilocarpine and reserpine to 24-hour-old rats increased the content of enkephalin-containing peptides (ECP) after 72 h (4-day-old rats) and activated the posttranslational processing of proenkephalin to high, intermediate and low molecular weight peptides respectively, although free met-enkephalin was not produced. Reserpine 50-59 proenkephalin Rattus norvegicus 223-233 1369586-5 1992 Chronic administration of dexamethasone increased ECP levels in the adrenal of 4-day-old rats and caused proenkephalin processing to intermediate- and low-molecular-weight products including the production of free met-enkephalin. Dexamethasone 26-39 proenkephalin Rattus norvegicus 108-118 1486489-2 1992 A highly specific radioimmunoassay was developed for determination of Met-ENK (H-Tyr-Gly-Gly-Phe-Met-OH). Enkephalin, Methionine 79-103 proenkephalin Rattus norvegicus 74-77 1486489-4 1992 Met-ENK-like immunoreactivity (Met-ENK-LI) is enriched in the purified synaptosomal fraction of rat forebrain homogenates and is released in a strictly Ca(2+)-dependent manner upon chemical depolarization or stimulation with the Ca2+ ionophore, ionomycin. Ionomycin 245-254 proenkephalin Rattus norvegicus 4-7 1486489-4 1992 Met-ENK-like immunoreactivity (Met-ENK-LI) is enriched in the purified synaptosomal fraction of rat forebrain homogenates and is released in a strictly Ca(2+)-dependent manner upon chemical depolarization or stimulation with the Ca2+ ionophore, ionomycin. Ionomycin 245-254 proenkephalin Rattus norvegicus 35-38 1486489-6 1992 Barium ions are able to replace Ca2+ in triggering Met-ENK-LI release. Barium 0-6 proenkephalin Rattus norvegicus 55-58 1341708-1 1992 Mechanisms of cathepsin B activation involved in methionine-enkephalin (ME) production induced by bradykinin (BK), des-Arg9-BK or L-arginine (L-Arg) were studied using cultured fibroblasts of the rat dental pulp, especially from a viewpoint of intracellular signal transduction. Arginine 130-140 proenkephalin Rattus norvegicus 60-70 1341708-1 1992 Mechanisms of cathepsin B activation involved in methionine-enkephalin (ME) production induced by bradykinin (BK), des-Arg9-BK or L-arginine (L-Arg) were studied using cultured fibroblasts of the rat dental pulp, especially from a viewpoint of intracellular signal transduction. Arginine 142-147 proenkephalin Rattus norvegicus 60-70 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Norepinephrine 85-99 proenkephalin Rattus norvegicus 33-37 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Dexamethasone 169-182 proenkephalin Rattus norvegicus 18-31 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Dexamethasone 169-182 proenkephalin Rattus norvegicus 33-37 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Dexamethasone 169-182 proenkephalin Rattus norvegicus 299-303 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Dexamethasone 242-255 proenkephalin Rattus norvegicus 18-31 19912895-1 1992 The expression of proenkephalin (PENK) mRNA in C6 rat glioma cells was stimulated by norepinephrine (a beta-adrenergic agonist) and markedly enhanced by the addition of dexamethasone (a glucocorticoid agonist) to the culture medium, although dexamethasone alone exhibited no significant increase in PENK mRNA. Dexamethasone 242-255 proenkephalin Rattus norvegicus 33-37 19912895-5 1992 Together, they suggest that activation of PENK gene in C6 cells is probably mediated mainly through the, beta-adrenergic agonist-elicited cyclic AMP signal pathway, and induction of AP-1 and kappaB-like binding activities appear not to participate in gene activation. Cyclic AMP 138-148 proenkephalin Rattus norvegicus 42-46 1279991-10 1992 It was determined by column chromatography that cAMP induced neonatal rat ventricular cardiac muscle cells to secrete Met5-enkephalin-Arg6-Phe7, whereas PMA plus 3-isobutyl-1-methylxanthine induced adult rat ventricular cardiac muscle cells to secrete Met5-enkephalin. Cyclic AMP 48-52 proenkephalin Rattus norvegicus 123-133 1425427-0 1992 Posttranslational processing of proenkephalin in AtT-20 cells: evidence for cleavage at a Lys-Lys site. Lysine 90-93 proenkephalin Rattus norvegicus 32-45 1425427-0 1992 Posttranslational processing of proenkephalin in AtT-20 cells: evidence for cleavage at a Lys-Lys site. Lysine 94-97 proenkephalin Rattus norvegicus 32-45 1425427-2 1992 Proenkephalin is synthesized in both N-glycosylated and unglycosylated forms, as demonstrated by treatment with tunicamycin. Tunicamycin 112-123 proenkephalin Rattus norvegicus 0-13 1425427-6 1992 Radiosequencing results verified the efficient cleavage of a Lys-Lys site within proenkephalin that resulted in the production of the 5.3-kDa peptide. Lysine 61-64 proenkephalin Rattus norvegicus 81-94 1425427-6 1992 Radiosequencing results verified the efficient cleavage of a Lys-Lys site within proenkephalin that resulted in the production of the 5.3-kDa peptide. Lysine 65-68 proenkephalin Rattus norvegicus 81-94 1425427-7 1992 Proenkephalin cleavage products stored within cells, which included the 5.3-kDa peptide, could be released upon stimulation of cells with BaCl2 (2-fold above basal levels), 8-bromo-cAMP or CRF (7- and 8-fold above basal levels, respectively), and a mixture of BaCl2 and 8-bromo-cAMP (20-fold above basal levels). barium chloride 138-143 proenkephalin Rattus norvegicus 0-13 1425427-7 1992 Proenkephalin cleavage products stored within cells, which included the 5.3-kDa peptide, could be released upon stimulation of cells with BaCl2 (2-fold above basal levels), 8-bromo-cAMP or CRF (7- and 8-fold above basal levels, respectively), and a mixture of BaCl2 and 8-bromo-cAMP (20-fold above basal levels). 8-Bromo Cyclic Adenosine Monophosphate 173-185 proenkephalin Rattus norvegicus 0-13 1425427-7 1992 Proenkephalin cleavage products stored within cells, which included the 5.3-kDa peptide, could be released upon stimulation of cells with BaCl2 (2-fold above basal levels), 8-bromo-cAMP or CRF (7- and 8-fold above basal levels, respectively), and a mixture of BaCl2 and 8-bromo-cAMP (20-fold above basal levels). barium chloride 260-265 proenkephalin Rattus norvegicus 0-13 1425427-7 1992 Proenkephalin cleavage products stored within cells, which included the 5.3-kDa peptide, could be released upon stimulation of cells with BaCl2 (2-fold above basal levels), 8-bromo-cAMP or CRF (7- and 8-fold above basal levels, respectively), and a mixture of BaCl2 and 8-bromo-cAMP (20-fold above basal levels). 8-bromo- 173-181 proenkephalin Rattus norvegicus 0-13 1425427-7 1992 Proenkephalin cleavage products stored within cells, which included the 5.3-kDa peptide, could be released upon stimulation of cells with BaCl2 (2-fold above basal levels), 8-bromo-cAMP or CRF (7- and 8-fold above basal levels, respectively), and a mixture of BaCl2 and 8-bromo-cAMP (20-fold above basal levels). Cyclic AMP 181-185 proenkephalin Rattus norvegicus 0-13 1425427-8 1992 An important difference between the processing of proenkephalin and the ACTH/endorphin precursor (POMC) in AtT-20 cells is efficient cleavage of a Lys-Lys site in proenkephalin and not in POMC. Lysine 147-150 proenkephalin Rattus norvegicus 50-63 1425427-8 1992 An important difference between the processing of proenkephalin and the ACTH/endorphin precursor (POMC) in AtT-20 cells is efficient cleavage of a Lys-Lys site in proenkephalin and not in POMC. Lysine 147-150 proenkephalin Rattus norvegicus 163-176 1425427-8 1992 An important difference between the processing of proenkephalin and the ACTH/endorphin precursor (POMC) in AtT-20 cells is efficient cleavage of a Lys-Lys site in proenkephalin and not in POMC. Lysine 151-154 proenkephalin Rattus norvegicus 50-63 1425427-8 1992 An important difference between the processing of proenkephalin and the ACTH/endorphin precursor (POMC) in AtT-20 cells is efficient cleavage of a Lys-Lys site in proenkephalin and not in POMC. Lysine 151-154 proenkephalin Rattus norvegicus 163-176 1425427-9 1992 The ability of AT/PE to process proenkephalin in a natural manner makes it a suitable model system to investigate elements involved in the processing of proenkephalin at Lys-Lys sites. Lysine 170-173 proenkephalin Rattus norvegicus 153-166 1425427-9 1992 The ability of AT/PE to process proenkephalin in a natural manner makes it a suitable model system to investigate elements involved in the processing of proenkephalin at Lys-Lys sites. Lysine 174-177 proenkephalin Rattus norvegicus 153-166 1279991-10 1992 It was determined by column chromatography that cAMP induced neonatal rat ventricular cardiac muscle cells to secrete Met5-enkephalin-Arg6-Phe7, whereas PMA plus 3-isobutyl-1-methylxanthine induced adult rat ventricular cardiac muscle cells to secrete Met5-enkephalin. Cyclic AMP 48-52 proenkephalin Rattus norvegicus 257-267 1337380-3 1992 A previous study indicated that [3H][D-Ala2,D-Leu5]enkephalin labels two binding sites in membranes depleted of mu binding sites by pretreatment with the site-directed acylating agent, 2-(p-ethoxybenzyl)-1-diethylaminoethyl-5-isothiocyanatobenzimid azole-HCI (BIT). 2-(p-ethoxybenzyl)-1-diethylaminoethyl-5-isothiocyanatobenzimid azole-hci 185-258 proenkephalin Rattus norvegicus 51-61 1475022-3 1992 Using circling behavior as a motor index, it was determined that injection of metabolically stable analogs of enkephalin, directly into the ventral pallidum, produced a dose-dependent, naloxone-antagonizable, increase in the number of rats rotating contralateral to the injected side, as well as the rate at which the animals turned. Naloxone 185-193 proenkephalin Rattus norvegicus 110-120 1475022-4 1992 The frequency of the contralateral rotation, induced by intra-ventral pallidal injection of DADL (which closely mimics the endogenous enkephalin peptides, exhibiting a high affinity for the delta receptor with a moderate affinity for mu receptors), increased with intraperitoneal pretreatment with amphetamine, suggesting that enhanced release of catecholamines potentiated effects of opioids in the ventral pallidum. Amphetamine 298-309 proenkephalin Rattus norvegicus 134-144 1475022-4 1992 The frequency of the contralateral rotation, induced by intra-ventral pallidal injection of DADL (which closely mimics the endogenous enkephalin peptides, exhibiting a high affinity for the delta receptor with a moderate affinity for mu receptors), increased with intraperitoneal pretreatment with amphetamine, suggesting that enhanced release of catecholamines potentiated effects of opioids in the ventral pallidum. Catecholamines 347-361 proenkephalin Rattus norvegicus 134-144 1385013-7 1992 After colchicine treatment, the number of SP-, NPY-, ENK- and CGRP-IR neurons appeared to increase, while that of VIP- and TH-IR neurons did not change significantly. Colchicine 6-16 proenkephalin Rattus norvegicus 53-56 1433221-0 1992 Synthesis and conformational properties of the lanthionine-bridged opioid peptide [D-AlaL2,AlaL5]enkephalin as determined by NMR and computer simulations. lanthionine 47-58 proenkephalin Rattus norvegicus 97-107 1331675-0 1992 Reserpine treatment stimulates enkephalin and D2 dopamine receptor gene expression in the rat striatum. Reserpine 0-9 proenkephalin Rattus norvegicus 31-41 1424102-1 1992 The s.c. administration of [Met5]-enkephalin to 10-day-old rats pretreated with the mixture of 3 peptidase inhibitors, amastatin, captopril and phosphoramidon, produced the inhibition of tail-flick response and loss of righting reflex. amastatin 119-128 proenkephalin Rattus norvegicus 34-44 1424102-1 1992 The s.c. administration of [Met5]-enkephalin to 10-day-old rats pretreated with the mixture of 3 peptidase inhibitors, amastatin, captopril and phosphoramidon, produced the inhibition of tail-flick response and loss of righting reflex. Captopril 130-139 proenkephalin Rattus norvegicus 34-44 1424102-1 1992 The s.c. administration of [Met5]-enkephalin to 10-day-old rats pretreated with the mixture of 3 peptidase inhibitors, amastatin, captopril and phosphoramidon, produced the inhibition of tail-flick response and loss of righting reflex. phosphoramidon 144-158 proenkephalin Rattus norvegicus 34-44 1424102-3 1992 Additionally, the fact that the two enkephalin-induced effects were more effectively antagonized by naloxone, a relatively selective mu-opioid antagonist, than by naltrindole, a specific delta-antagonist, or by nor-binaltorphimine, a specific kappa-antagonist, showed that these two effects were produced by the interaction of enkephalin with mu receptors. Naloxone 100-108 proenkephalin Rattus norvegicus 36-46 1424102-3 1992 Additionally, the fact that the two enkephalin-induced effects were more effectively antagonized by naloxone, a relatively selective mu-opioid antagonist, than by naltrindole, a specific delta-antagonist, or by nor-binaltorphimine, a specific kappa-antagonist, showed that these two effects were produced by the interaction of enkephalin with mu receptors. Naloxone 100-108 proenkephalin Rattus norvegicus 327-337 1424102-3 1992 Additionally, the fact that the two enkephalin-induced effects were more effectively antagonized by naloxone, a relatively selective mu-opioid antagonist, than by naltrindole, a specific delta-antagonist, or by nor-binaltorphimine, a specific kappa-antagonist, showed that these two effects were produced by the interaction of enkephalin with mu receptors. norbinaltorphimine 211-230 proenkephalin Rattus norvegicus 36-46 1424102-4 1992 Moreover the involvement of mu receptors in the production of these two effects was shown by the fact that the s.c. administration of [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin, a selective mu agonist, also produced these two effects which were more effectively antagonized by naloxone than by naltrindole or nor-binaltorphimine. [d-ala2,n-me-phe4 134-151 proenkephalin Rattus norvegicus 161-171 1424102-4 1992 Moreover the involvement of mu receptors in the production of these two effects was shown by the fact that the s.c. administration of [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin, a selective mu agonist, also produced these two effects which were more effectively antagonized by naloxone than by naltrindole or nor-binaltorphimine. Naloxone 272-280 proenkephalin Rattus norvegicus 161-171 1424102-4 1992 Moreover the involvement of mu receptors in the production of these two effects was shown by the fact that the s.c. administration of [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin, a selective mu agonist, also produced these two effects which were more effectively antagonized by naloxone than by naltrindole or nor-binaltorphimine. naltrindole 289-300 proenkephalin Rattus norvegicus 161-171 1424102-4 1992 Moreover the involvement of mu receptors in the production of these two effects was shown by the fact that the s.c. administration of [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin, a selective mu agonist, also produced these two effects which were more effectively antagonized by naloxone than by naltrindole or nor-binaltorphimine. norbinaltorphimine 304-323 proenkephalin Rattus norvegicus 161-171 1359374-2 1992 35S-labelled oligonucleotide probes for mRNA of enkephalin (ENK), dynorphin (DYN) and thyrotropin releasing hormone (TRH) were hybridized to brain sections of rats sacrificed 24 h after a stage 1 or stage 5 seizure, or 2 weeks after a stage 5 seizure. Sulfur-35 0-3 proenkephalin Rattus norvegicus 48-58 1359374-2 1992 35S-labelled oligonucleotide probes for mRNA of enkephalin (ENK), dynorphin (DYN) and thyrotropin releasing hormone (TRH) were hybridized to brain sections of rats sacrificed 24 h after a stage 1 or stage 5 seizure, or 2 weeks after a stage 5 seizure. Sulfur-35 0-3 proenkephalin Rattus norvegicus 60-63 1360320-3 1992 The increased EPSP amplitudes resulting from superfusion with the enkephalin analogs were qualitatively similar to those caused by the GABAA receptor antagonist, bicuculline methiodide (BMI). bicuculline methiodide 186-189 proenkephalin Rattus norvegicus 66-76 1360320-8 1992 Despite the fact that the delta agonist, DPDPE, had no effect on recurrent, feed-forward or monosynaptic evoked IPSPs, this enkephalin did reversibly reduce the frequency of spontaneously occurring IPSPs, measured using whole-cell recordings with pipettes containing 65 mM KCl. Potassium Chloride 273-276 proenkephalin Rattus norvegicus 124-134 1445662-5 1992 The kappa agonist U50,488 promoted rearlimb activity in the absence of milk, whereas the mu agonist [D-Ala2,NMe-Phe4,Gly5-ol]-enkephalin (DAMGO) exerted little influence on fetal behavior. nme-phe4 108-116 proenkephalin Rattus norvegicus 126-136 1328516-2 1992 Concomitantly, the fatty acids, but not the methyl esters, inhibited the specific binding of the tritiated mu-, delta-, and kappa-opioids Tyr-D-Ala-Gly-(Me)Phe-Gly-ol (DAMGO), [D-Pen2,D-Pen5]enkephalin (DPDPE), and U69,593, respectively. Fatty Acids 19-30 proenkephalin Rattus norvegicus 191-201 1436504-7 1992 Conversely, treatment with either haloperidol or SCH23390 for two weeks did not induce any detectable changes in cholecystokinin messenger RNA expression in the striatum while, as expected, an increase in the striatal enkephalin messenger RNA content was observed. Haloperidol 34-45 proenkephalin Rattus norvegicus 218-228 1436504-7 1992 Conversely, treatment with either haloperidol or SCH23390 for two weeks did not induce any detectable changes in cholecystokinin messenger RNA expression in the striatum while, as expected, an increase in the striatal enkephalin messenger RNA content was observed. SCH 23390 49-57 proenkephalin Rattus norvegicus 218-228 1356595-6 1992 In addition, the content of either of the opioids enkephalin or dynorphin appears to distinguish subsets of medullary catecholamine neurons. Catecholamines 118-131 proenkephalin Rattus norvegicus 50-60 1438884-10 1992 Methionine-enkephalin (5 micrograms/ml) significantly reduced the thromboxane release from venous tissue slices. Thromboxanes 66-77 proenkephalin Rattus norvegicus 11-21 1385171-4 1992 Administration of L-DOPA to sham-operated rats bilaterally increased SP levels in striatum and substantia nigra, and [Met5]enkephalin and CCK content in substantia nigra. Levodopa 18-24 proenkephalin Rattus norvegicus 123-133 1322969-1 1992 An opioid receptor agonist, [D-Ala2,Me-Phe4,Glyol5]enkephalin (DAMGE), decreased [3H]thymidine incorporation into DNA of fetal rat brain cell aggregates. me-phe4 36-43 proenkephalin Rattus norvegicus 51-61 1322969-1 1992 An opioid receptor agonist, [D-Ala2,Me-Phe4,Glyol5]enkephalin (DAMGE), decreased [3H]thymidine incorporation into DNA of fetal rat brain cell aggregates. Tritium 82-84 proenkephalin Rattus norvegicus 51-61 1322969-7 1992 The enkephalin analog also reduced basal [3H]inositol trisphosphate and glutamate-stimulated [3H]inositol monophosphate and [3H]inositol bisphosphate accumulation in the aggregates. [3h]inositol trisphosphate 41-67 proenkephalin Rattus norvegicus 4-14 1322969-7 1992 The enkephalin analog also reduced basal [3H]inositol trisphosphate and glutamate-stimulated [3H]inositol monophosphate and [3H]inositol bisphosphate accumulation in the aggregates. Glutamic Acid 72-81 proenkephalin Rattus norvegicus 4-14 1322969-7 1992 The enkephalin analog also reduced basal [3H]inositol trisphosphate and glutamate-stimulated [3H]inositol monophosphate and [3H]inositol bisphosphate accumulation in the aggregates. [3h]inositol monophosphate 93-119 proenkephalin Rattus norvegicus 4-14 1322969-7 1992 The enkephalin analog also reduced basal [3H]inositol trisphosphate and glutamate-stimulated [3H]inositol monophosphate and [3H]inositol bisphosphate accumulation in the aggregates. [3h]inositol bisphosphate 124-149 proenkephalin Rattus norvegicus 4-14 1385171-5 1992 L-DOPA treatment of 6-OHDA-lesioned rats increased [Met5]- and [Leu5]enkephalin and CCK levels in the striatum ipsilateral to the lesion but not on the intact side. Levodopa 0-6 proenkephalin Rattus norvegicus 69-79 1385171-5 1992 L-DOPA treatment of 6-OHDA-lesioned rats increased [Met5]- and [Leu5]enkephalin and CCK levels in the striatum ipsilateral to the lesion but not on the intact side. Oxidopamine 20-26 proenkephalin Rattus norvegicus 69-79 1385171-6 1992 In the substantia nigra, the lesion-induced decrease in [Leu5]enkephalin and SP was reversed by L-DOPA treatment, [Met5]enkephalin and CCK levels ipsilateral to the lesion were further enhanced, and there was an increase in NT ipsilateral to the lesion. Levodopa 96-102 proenkephalin Rattus norvegicus 62-72 1385171-7 1992 Cryptic [Met5]- and [Leu5]enkephalin increased in the ipsilateral striatum following an 6-OHDA lesion. Oxidopamine 88-94 proenkephalin Rattus norvegicus 26-36 1436490-6 1992 Fine structural investigation revealed that GABA-like immunoreactivity was confined in the nerve endings to the clear synaptic vesicles of 40 nm diameter, whereas the immunogold particles, indicating the occurrence of [Met]enkephalin, were located over the large dense-cored vesicles of 120 nm diameter. gamma-Aminobutyric Acid 44-48 proenkephalin Rattus norvegicus 223-233 1426581-0 1992 Regulation of glutamate decarboxylase and enkephalin mRNA levels in rat striatum by chronic benzodiazepine treatment. Benzodiazepines 92-106 proenkephalin Rattus norvegicus 42-52 1634078-7 1992 Plasma methionine-enkephalin levels in both cholestatic plasma and plasma from sham-operated animals were stable when incubated in vitro despite the presence of undiminished activity of the major enkephalin-degrading enzymes. Methionine 7-17 proenkephalin Rattus norvegicus 18-28 1327405-5 1992 In the activity studies, morphine sulfate (mixed mu and delta agonist; 0.025, 0.25 and 2.5 micrograms/0.5 microliter) caused an initial inhibition followed by a disinhibition of activity while [D-Ala2-Met5]-enkephalin (DALA) (mixed mu and delta agonist; 0.25, 2.5 and 5.0 micrograms/0.5 microliter) elicited an immediate potentiation of locomotor activity. Morphine 25-41 proenkephalin Rattus norvegicus 207-217 1327405-7 1992 In contrast, [D-Pen2,5]-enkephalin (DPEN; delta agonist; 0.02, 0.2 and 2.0 micrograms/0.5 microliter) induced an immediate, but relatively short-lasting activation. dpen 36-40 proenkephalin Rattus norvegicus 24-34 1353443-6 1992 Among the substances proposed as biochemical markers of PC12 cell differentiation toward chromaffin cells is the endogenous opioid precursor proenkephalin and its posttranslational peptide products. chromaffin 89-99 proenkephalin Rattus norvegicus 141-154 1353443-7 1992 Indeed, the proenkephalin gene is expressed in both adrenal chromaffin and PC12 cells. chromaffin 60-70 proenkephalin Rattus norvegicus 12-25 1353443-16 1992 Thus, it appears that after cholinergic stimulation, PC12 dynorphin is cosecreted with catecholamines, a phenomenon described for a number of neuropeptides, including the proenkephalin-derived opioids. pc12 dynorphin 53-67 proenkephalin Rattus norvegicus 171-184 1353443-16 1992 Thus, it appears that after cholinergic stimulation, PC12 dynorphin is cosecreted with catecholamines, a phenomenon described for a number of neuropeptides, including the proenkephalin-derived opioids. Catecholamines 87-101 proenkephalin Rattus norvegicus 171-184 1359616-3 1992 The present study attempted to elucidate whether L-cysteine produces long-term changes in neurotransmitter (dopamine; 5-hydroxytryptamine) or neuropeptide (Met5-enkephalin; dynorphin A (1-8); substance P) systems as a corollary to neonatal treatment with L-cysteine. Cysteine 49-59 proenkephalin Rattus norvegicus 161-171 1436641-2 1992 Thioacetamide treatment was associated with an 8.7-fold increase in plasma immunoreactive methionine enkephalin levels (P less than or equal to 0.005) 24 h after treatment. Thioacetamide 0-13 proenkephalin Rattus norvegicus 101-111 1327824-1 1992 L-arginine is considered to be a precursor substance of kyotorphin (tyrosyl-arginine), a [Met5]enkephalin releaser with antinociceptive action. Arginine 0-10 proenkephalin Rattus norvegicus 95-105 1327824-1 1992 L-arginine is considered to be a precursor substance of kyotorphin (tyrosyl-arginine), a [Met5]enkephalin releaser with antinociceptive action. tyrosylarginine 68-84 proenkephalin Rattus norvegicus 95-105 1321951-3 1992 A significant increase was also observed with the mu-selective agonists (N-methyl-Phe3,D-Pro4)-morphiceptin, dermorphin, and (D-Ala2-N-methyl-Phe4-Gly-ol5)-enkephalin (DAGO). n-methyl-phe3,d-pro4)-morphiceptin 73-107 proenkephalin Rattus norvegicus 156-166 1331998-2 1992 The effects of the selective delta peptide, DPDPE ([2-D-penicillamine,5-D-penicillamine]enkephalin), on morphine-induced EEG and EEG power spectra were assessed. Morphine 104-112 proenkephalin Rattus norvegicus 88-98 1320122-0 1992 Ring substituted and other conformationally constrained tyrosine analogues of [D-Pen2,D-Pen5]enkephalin with delta opioid receptor selectivity. Tyrosine 56-64 proenkephalin Rattus norvegicus 93-103 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. cyclic-disulfide 33-49 proenkephalin Rattus norvegicus 93-103 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. cyclic-disulfide 33-49 proenkephalin Rattus norvegicus 129-139 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. Nitrogen Dioxide 190-193 proenkephalin Rattus norvegicus 93-103 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. Nitrogen Dioxide 190-193 proenkephalin Rattus norvegicus 129-139 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. beta-methyltyrosine 267-286 proenkephalin Rattus norvegicus 93-103 1320122-1 1992 The conformationally restricted, cyclic disulfide-containing delta opioid receptor selective enkephalin analogue [D-Pen2,D-Pen5] enkephalin (DPDPE) was modified by 2" (CH3) and 3" (I, OCH3, NO2, NH2) ring substitutions and by beta-methyl conformationally constrained beta-methyltyrosine derivatives in the 1 position. beta-methyltyrosine 267-286 proenkephalin Rattus norvegicus 129-139 1379635-11 1992 In the ventrolateral medulla, ENK-ir neurons were distributed in a conical caudorostral column throughout the PGi. 2cer 110-113 proenkephalin Rattus norvegicus 30-33 1379635-12 1992 Retrograde transport of a WGA-colloidal gold conjugate (WGA-apoHRP-Au) from LC, combined with immunohistochemistry for ENK in the same tissue sections, revealed that LC afferents in the PGi and PrH were interdigitated with ENK-ir neurons. 2cer 186-189 proenkephalin Rattus norvegicus 119-122 1379635-14 1992 Overall, 57% and 56% of the LC-projecting neurons in PGi and PrH, respectively, were also immunoreactive for ENK, suggesting that enkephalinergic neurons of PGi and PrH are major afferents to noradrenergic LC neurons. 2cer 53-56 proenkephalin Rattus norvegicus 109-112 1379635-14 1992 Overall, 57% and 56% of the LC-projecting neurons in PGi and PrH, respectively, were also immunoreactive for ENK, suggesting that enkephalinergic neurons of PGi and PrH are major afferents to noradrenergic LC neurons. 2cer 157-160 proenkephalin Rattus norvegicus 109-112 1515935-6 1992 These results suggest that enkephalin is present both in GABAergic neurones and in neurones which do not contain GABA within the rat superficial dorsal horn. gamma-Aminobutyric Acid 57-61 proenkephalin Rattus norvegicus 27-37 1321951-6 1992 The stimulatory responses of Leu-enkephalin, beta-endorphin, dynorphin A, and delta-selective agonists were counteracted by naltrindole with pA2 values of 9.39-8.93, whereas naloxone was less potent (pA2 = 8.17-7.59). naltrindole 124-135 proenkephalin Rattus norvegicus 33-43 1521577-3 1992 The content in the gland of proenkephalin A-derived peptides Met5-enkephalin, Leu5-enkephalin, Met5-enkephalin Arg6-Phe7 and Met5-enkephalin Arg6-Gly7-Leu8 indicates tissue specific processing with an enhancement of the heptapeptide. arg6-gly7-leu8 141-155 proenkephalin Rattus norvegicus 28-43 1521577-5 1992 In the presence of the peptidase inhibitors thiorphan and bestatin, the inhibition of forskolin-stimulated adenylate cyclase activity by Met5-enk, Leu5-enk, Met5-enk Arg6-Phe7 and DALA were identical. Thiorphan 44-53 proenkephalin Rattus norvegicus 142-145 1521577-5 1992 In the presence of the peptidase inhibitors thiorphan and bestatin, the inhibition of forskolin-stimulated adenylate cyclase activity by Met5-enk, Leu5-enk, Met5-enk Arg6-Phe7 and DALA were identical. Colforsin 86-95 proenkephalin Rattus norvegicus 142-145 1521577-5 1992 In the presence of the peptidase inhibitors thiorphan and bestatin, the inhibition of forskolin-stimulated adenylate cyclase activity by Met5-enk, Leu5-enk, Met5-enk Arg6-Phe7 and DALA were identical. Colforsin 86-95 proenkephalin Rattus norvegicus 152-155 1521577-5 1992 In the presence of the peptidase inhibitors thiorphan and bestatin, the inhibition of forskolin-stimulated adenylate cyclase activity by Met5-enk, Leu5-enk, Met5-enk Arg6-Phe7 and DALA were identical. Colforsin 86-95 proenkephalin Rattus norvegicus 152-155 1521577-7 1992 Addition of the octapeptide, Met5-enk Arg6-Gly7-Leu8 resulted in decreased adenylate cyclase activity; however, the effect was not statistically significant. arg6-gly7-leu8 38-52 proenkephalin Rattus norvegicus 34-37 1463228-4 1992 The rats were administered enkephalin analogues--DAGO, DADL and naloxone. Naloxone 64-72 proenkephalin Rattus norvegicus 27-37 1356580-7 1992 In comparison to values from lesioned, vehicle-treated controls, intermittent administration of SKF 38393 reduced somatostatin and neuropeptide Y (down 61% and 57%, respectively), increased neurotensin (up 105%) and dynorphin (up 184%) and had no effect on enkephalin; continuous SKF 38393 decreased neuropeptide Y by 39% but did not alter levels of the other peptides. 1,2,3,4-tetrahydroisoquinoline-7-sulfonamide 96-99 proenkephalin Rattus norvegicus 257-267 1356580-8 1992 Continuous quinpirole elevated somatostatin and neuropeptide Y levels (up 43% and 33%, respectively), but reduced the lesion-induced increases in both neurotensin (down 51%) and enkephalin (down 24%) content. Quinpirole 11-21 proenkephalin Rattus norvegicus 178-188 1617531-0 1992 Microdialysis of noradrenaline in rostral ventrolateral medulla after intravenous methionine enkephalin administration in anesthetized rats. Norepinephrine 17-30 proenkephalin Rattus norvegicus 93-103 1617531-3 1992 A microdialysis probe was stereotaxically implanted in the C1 area to dialyze monoamines during intravenous administration of met-enkephalin. monoamines 78-88 proenkephalin Rattus norvegicus 130-140 1617531-7 1992 Intravenous infusion of 100 micrograms/kg/min met-enkephalin increased the extracellular concentration of noradrenaline in the C1 area. Norepinephrine 106-119 proenkephalin Rattus norvegicus 50-60 1617531-8 1992 There was a differential blockade by naloxone of the hypotensive action of met-enkephalin after intravenous or C1 administration. Naloxone 37-45 proenkephalin Rattus norvegicus 79-89 1498660-6 1992 In contrast, the A12 dopamine neurons, which regulate prolactin secretion by inhibition, showed a roughly 70% contact rate with dynorphin axons (P less than 0.001) with Met-enkephalin and ACTH contact rates remaining low at 20 and 5% respectively. Dopamine 21-29 proenkephalin Rattus norvegicus 173-183 1396996-0 1992 Release of immunoreactive [Met5]enkephalin and cholecystokinin from the spinal cord by beta-endorphin administered intraventricularly in the pentobarbital-anesthetized rat. Pentobarbital 141-154 proenkephalin Rattus norvegicus 32-42 1396996-2 1992 induced the release of immunoreactive [Met5]enkephalin and sulfated cholecystokinin octapeptide (CCK-8s) from the spinal cord in the pentobarbital-anesthetized rat. Pentobarbital 133-146 proenkephalin Rattus norvegicus 44-54 1617455-1 1992 It has already been demonstrated that chronic treatment with the dopamine receptor blocker, haloperidol, results in an increase of proenkephalin-A-derived peptides in the caudate-putamen (CP). Haloperidol 92-103 proenkephalin Rattus norvegicus 131-146 1611659-1 1992 In situ hybridization with an oligonucleotidic 35S-labelled probe complementary to the 388-435 coding region of rat proenkephalin mRNA seems to show a colocalization between synthesis and storage sites of methionine-enkephalin(MK)-like substances only in young cellular stages of the ovotestis and in several neurons of cerebral, parietal and pleural ganglia. Sulfur-35 47-50 proenkephalin Rattus norvegicus 119-129 1334871-0 1992 [Changes in the catecholamine level in a dialysate of the striatum with the chronic administration into it of an enkephalin-like tetrapeptide causing catalepsy in rats]. Catecholamines 16-29 proenkephalin Rattus norvegicus 113-123 1376635-2 1992 Administration of apomorphine, a dopamine agonist, elevated the level of 35 kDa Fos-related antigen which co-localized with dynorphin and substance P, but not enkephalin, in striatal neurons. Apomorphine 18-29 proenkephalin Rattus norvegicus 159-169 1331430-8 1992 The enkephalin action on the mEPSC frequency was blocked by naloxone. Naloxone 60-68 proenkephalin Rattus norvegicus 4-14 1511281-0 1992 Semi-quantitative analysis of the effects of estrogen on CGRP- and methionine-enkephalin-immunoreactivity in the periventricular preoptic nucleus and the medial preoptic area of female rats. Methionine 67-77 proenkephalin Rattus norvegicus 78-88 1504729-4 1992 Intravenous administration of morphine (0.75-3 mg kg-1) or the peripherally acting enkephalin analogue, BW443C (0.75-3 mg kg-1), substantially augmented acid secretion in basal conditions. BW 443C 104-110 proenkephalin Rattus norvegicus 83-93 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. Sulfhydryl Compounds 4-9 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. leucinthiol 20-31 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. Cysteamine 33-43 proenkephalin Rattus norvegicus 91-101 1374283-7 1992 Flocculent DAB reaction product was distributed over membraneous structures in ENK-ir fibers and terminals. 3,3'-Diaminobenzidine 11-14 proenkephalin Rattus norvegicus 79-82 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. Cysteine 48-56 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. 3-nitro-2-pyridinesulphenyl 141-168 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. 3-Nitro-2-pyridinesulfenyl chloride 170-174 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. disulphides 196-207 proenkephalin Rattus norvegicus 91-101 1325466-1 1992 The thiol groups of leucinthiol, cysteamine and cysteine incorporated into opioid peptides enkephalin and morphiceptin were activated by the 3-nitro-2-pyridinesulphenyl (Npys) group to form mixed disulphides highly reactive to a free thiol. Sulfhydryl Compounds 26-31 proenkephalin Rattus norvegicus 91-101 1325466-2 1992 Enkephalin analogues containing Npys-leucinthiol or -cysteine at positions 4, 5 and 6 exhibited high affinities for both mu and delta receptors, while morphiceptin analogues containing Npys-cysteine at positions 4 and 5 showed relatively weak affinity only for mu receptors. npys-leucinthiol 32-48 proenkephalin Rattus norvegicus 0-10 1325466-2 1992 Enkephalin analogues containing Npys-leucinthiol or -cysteine at positions 4, 5 and 6 exhibited high affinities for both mu and delta receptors, while morphiceptin analogues containing Npys-cysteine at positions 4 and 5 showed relatively weak affinity only for mu receptors. Cysteine 52-61 proenkephalin Rattus norvegicus 0-10 1325466-2 1992 Enkephalin analogues containing Npys-leucinthiol or -cysteine at positions 4, 5 and 6 exhibited high affinities for both mu and delta receptors, while morphiceptin analogues containing Npys-cysteine at positions 4 and 5 showed relatively weak affinity only for mu receptors. S-(3-Nitro-2-pyridinesulfenyl)cysteine 185-198 proenkephalin Rattus norvegicus 0-10 1374504-1 1992 The influence of cocaine self-administration on the expression of messenger RNAs for dynorphin, enkephalin and substance P was analyzed in the rat striatum with in situ hybridization histochemistry. Cocaine 17-24 proenkephalin Rattus norvegicus 96-106 1346626-3 1992 D2 blockade with haloperidol or raclopride increased, whereas D2 stimulation with LY-171555 (D2 agonist) decreased, striatal and accumbens proenkephalin mRNA abundance. 4,4a,5,6,7,8,8a,9-octahydro-5-propyl-1H-pyrzolo(3,4-g)quinoline 82-91 proenkephalin Rattus norvegicus 139-152 1317492-10 1992 We conclude that enkephalin biosynthesis, like co-stored catecholamines, is induced by a transsynaptic process. Catecholamines 57-71 proenkephalin Rattus norvegicus 17-27 1348271-0 1992 Dual ultrastructural localization of enkephalin and tyrosine hydroxylase immunoreactivity in the rat ventral tegmental area: multiple substrates for opiate-dopamine interactions. Dopamine 156-164 proenkephalin Rattus norvegicus 37-47 1348271-3 1992 Using a dual-labeling, immunoperoxidase and immunogold-silver method, we localized antisera directed against leu5-enkephalin (ENK) and the catecholamine-synthesizing enzyme tyrosine hydroxylase (TH) in acrolein-fixed sections through the VTA. Acrolein 202-210 proenkephalin Rattus norvegicus 126-129 1639241-9 1992 Studies with the peptidase inhibitors captopril and bestatin showed a differential potentiation of the cardiovascular effects of the proenkephalin products by inhibition of angiotensin converting enzyme and aminopeptidase. Captopril 38-47 proenkephalin Rattus norvegicus 133-146 1639241-9 1992 Studies with the peptidase inhibitors captopril and bestatin showed a differential potentiation of the cardiovascular effects of the proenkephalin products by inhibition of angiotensin converting enzyme and aminopeptidase. ubenimex 52-60 proenkephalin Rattus norvegicus 133-146 1312200-3 1992 Treatment of cells with dexamethasone resulted in a 10-fold decline in c-fos transcripts and a small increase in proenkephalin mRNA. Dexamethasone 24-37 proenkephalin Rattus norvegicus 113-126 1349353-14 1992 The findings of the study provide anatomical substrates for multilevel interactions between catecholamines, mostly dopamine, and enkephalin in rat dorsal striatum. Catecholamines 92-106 proenkephalin Rattus norvegicus 129-139 1312200-4 1992 Combined exposure to dexamethasone and isoproterenol also induced a decrease in c-fos mRNA while proenkephalin mRNA increased 8-fold. Dexamethasone 21-34 proenkephalin Rattus norvegicus 97-110 1312200-4 1992 Combined exposure to dexamethasone and isoproterenol also induced a decrease in c-fos mRNA while proenkephalin mRNA increased 8-fold. Isoproterenol 39-52 proenkephalin Rattus norvegicus 97-110 1312200-5 1992 Treatment of the C6 cells with phorbol 12-myristate 13-acetate caused a 13-fold increase in c-fos expression 0.5 h after administration and a decrease in proenkephalin mRNA. Tetradecanoylphorbol Acetate 31-62 proenkephalin Rattus norvegicus 154-167 1372067-3 1992 In this report, we have analyzed the effect of lithium on two neuropeptide encoding genes that are regulated by second messenger systems; neuropeptide Y (NPY) and proenkephalin (Enk). Lithium 47-54 proenkephalin Rattus norvegicus 178-181 1347633-0 1992 The effects of excitatory amino acids on proenkephalin and prodynorphin mRNA levels in the hippocampal dentate gyrus of the rat; an in situ hybridization study. Excitatory Amino Acids 15-37 proenkephalin Rattus norvegicus 41-54 1319006-8 1992 Frozen brain sections were prepared, incubated in [3H]D-Ala2,MePhe4,Gly-ol5-enkephalin, which selectively labels mu-receptors, and analyzed using quantitative receptor autoradiography. Tritium 51-53 proenkephalin Rattus norvegicus 76-86 1347633-2 1992 As shown by an in situ immunohistochemical analysis, 3 h after the excitatory amino acids injections the rats displayed a bilateral profound elevation of the proenkephalin and prodynorphin mRNA levels in dentate gyrus granule cells (2-3 or 1.5-2 fold higher than control levels, respectively). Excitatory Amino Acids 67-89 proenkephalin Rattus norvegicus 158-171 1347633-5 1992 The study demonstrated that activation of NMDA, quisqualate or kainate receptors in the hippocampus induced seizures associated with a marked increase in the proenkephalin (PENK) and the prodynorphin (PDYN) gene expression in the rat dentate gyrus. N-Methylaspartate 42-46 proenkephalin Rattus norvegicus 158-171 1347633-5 1992 The study demonstrated that activation of NMDA, quisqualate or kainate receptors in the hippocampus induced seizures associated with a marked increase in the proenkephalin (PENK) and the prodynorphin (PDYN) gene expression in the rat dentate gyrus. N-Methylaspartate 42-46 proenkephalin Rattus norvegicus 173-177 1309318-2 1992 Cells were field-stimulated at 1 Hz in 1.5 mM bathing Ca2+ at 23 degrees C. The mu-agonist [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (10(-5) M) had no effect on the twitch. n-me-phe4 99-108 proenkephalin Rattus norvegicus 118-128 1309318-2 1992 Cells were field-stimulated at 1 Hz in 1.5 mM bathing Ca2+ at 23 degrees C. The mu-agonist [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (10(-5) M) had no effect on the twitch. gly5-ol 109-116 proenkephalin Rattus norvegicus 118-128 1478730-4 1992 Proenkephalin mRNA expression was stimulated by IL-1 beta in a time- and concentration-dependent manner, being maximal with 5 U/ml IL-1 beta at 4 h. Although the beta-adrenergic agonist isoproterenol was also active, interferon, glutamate, and carbachol were not. Isoproterenol 186-199 proenkephalin Rattus norvegicus 0-13 1478730-4 1992 Proenkephalin mRNA expression was stimulated by IL-1 beta in a time- and concentration-dependent manner, being maximal with 5 U/ml IL-1 beta at 4 h. Although the beta-adrenergic agonist isoproterenol was also active, interferon, glutamate, and carbachol were not. Glutamic Acid 229-238 proenkephalin Rattus norvegicus 0-13 1478730-4 1992 Proenkephalin mRNA expression was stimulated by IL-1 beta in a time- and concentration-dependent manner, being maximal with 5 U/ml IL-1 beta at 4 h. Although the beta-adrenergic agonist isoproterenol was also active, interferon, glutamate, and carbachol were not. Carbachol 244-253 proenkephalin Rattus norvegicus 0-13 1314311-2 1992 Mathematical analysis of single [3H]-[D-Ala2,MePhe4,Gly-ol5] enkephalin (DAGO) saturation curves suggested binding of the [3H]-ligand at one site, while displacement curves of low concentrations of [3H]-DAGO with selective mu-ligands indicated the presence of high- and low-affinity sites. 3h]-[d-ala2 33-44 proenkephalin Rattus norvegicus 61-71 1314311-2 1992 Mathematical analysis of single [3H]-[D-Ala2,MePhe4,Gly-ol5] enkephalin (DAGO) saturation curves suggested binding of the [3H]-ligand at one site, while displacement curves of low concentrations of [3H]-DAGO with selective mu-ligands indicated the presence of high- and low-affinity sites. mephe4 45-51 proenkephalin Rattus norvegicus 61-71 1314311-2 1992 Mathematical analysis of single [3H]-[D-Ala2,MePhe4,Gly-ol5] enkephalin (DAGO) saturation curves suggested binding of the [3H]-ligand at one site, while displacement curves of low concentrations of [3H]-DAGO with selective mu-ligands indicated the presence of high- and low-affinity sites. Tritium 33-35 proenkephalin Rattus norvegicus 61-71 1314311-2 1992 Mathematical analysis of single [3H]-[D-Ala2,MePhe4,Gly-ol5] enkephalin (DAGO) saturation curves suggested binding of the [3H]-ligand at one site, while displacement curves of low concentrations of [3H]-DAGO with selective mu-ligands indicated the presence of high- and low-affinity sites. Tritium 123-125 proenkephalin Rattus norvegicus 61-71 1314311-4 1992 Eighty percent of [3H]-[D-Ala2,D-Leu5] enkephalin (DADLE) binding was displaced by DAGO with high affinity, indicating that a high percentage of [3H]-DADLE binding was at mu-sites. Tritium 19-21 proenkephalin Rattus norvegicus 39-49 1314311-4 1992 Eighty percent of [3H]-[D-Ala2,D-Leu5] enkephalin (DADLE) binding was displaced by DAGO with high affinity, indicating that a high percentage of [3H]-DADLE binding was at mu-sites. Tritium 146-148 proenkephalin Rattus norvegicus 39-49 1528574-3 1992 The prolonged administrations of Met-ENK and Leu-ENK significantly increased the incidence of gastric cancers in week 52. Leucine 45-48 proenkephalin Rattus norvegicus 49-52 1688153-10 1991 Kainic acid also reduced total neuronal numbers, as well as Met-Enk and AChE positive staining, to approximately the same extent in mature and senescent rats. Kainic Acid 0-11 proenkephalin Rattus norvegicus 64-67 1687763-3 1991 Naltrexone significantly blocked the EEG effects of morphine and the enkephalin analog, but methyl naltrexone failed to do so. Naltrexone 0-10 proenkephalin Rattus norvegicus 69-79 1723788-4 1991 Using a highly specific radioimmunoassay, rat pineals were demonstrated to contain approximately 3.5 pg methionine-enkephalin (Met-Enk) per gland. enk 131-134 proenkephalin Rattus norvegicus 115-125 1662276-8 1991 Infusion into AT (10 min before) of naltrexone (2-4 ng), ICI 154, 129 (1-10 ng) and WIN 44,441-3 (2-20 ng) antagonized the antinociception evoked by locally applied morphine (25 ng), [D-Pen2,D-Pen5]enkephalin (50 ng) and U 50,488 (100 ng), respectively. Naltrexone 36-46 proenkephalin Rattus norvegicus 198-208 1668613-4 1991 Treatment of neonatal testis with an enkephalin analogue induces a short-term suppression of testosterone secretion. Testosterone 93-105 proenkephalin Rattus norvegicus 37-47 19912832-5 1991 Treatment of newborn female rats with testosterone increases the number of PENK mRNA-containing neurons in the AVPv, but decreases the number of PDYN mRNA-containing neurons in the AVPv compared with untreated females. Testosterone 38-50 proenkephalin Rattus norvegicus 75-79 19912833-4 1991 Pretreatment with a single dose of corticosterone before surgery in the morning produced high corticosterone levels similar to those in the evening and prevented the decrease of ENK mRNA in the hippocampus. Corticosterone 35-49 proenkephalin Rattus norvegicus 178-181 1756390-1 1991 Unilateral injections of 6-hydroxydopamine (6-OHDA) cause significant bilateral increases in striatal proenkephalin (PEK) mRNA in rat brain. Oxidopamine 25-42 proenkephalin Rattus norvegicus 102-115 1756390-1 1991 Unilateral injections of 6-hydroxydopamine (6-OHDA) cause significant bilateral increases in striatal proenkephalin (PEK) mRNA in rat brain. Oxidopamine 25-42 proenkephalin Rattus norvegicus 117-120 1756390-1 1991 Unilateral injections of 6-hydroxydopamine (6-OHDA) cause significant bilateral increases in striatal proenkephalin (PEK) mRNA in rat brain. Oxidopamine 44-50 proenkephalin Rattus norvegicus 102-115 1756390-1 1991 Unilateral injections of 6-hydroxydopamine (6-OHDA) cause significant bilateral increases in striatal proenkephalin (PEK) mRNA in rat brain. Oxidopamine 44-50 proenkephalin Rattus norvegicus 117-120 1797559-5 1991 However, 24 h after the naloxone challenge, there was a significant increase in spinal enkephalin levels in morphine-dependent animals. Morphine 108-116 proenkephalin Rattus norvegicus 87-97 1658309-0 1991 Selective antagonism by naltrindole of the antinociceptive effects of the delta opioid agonist cyclic[D-penicillamine2-D-penicillamine5]enkephalin in the rat. naltrindole 24-35 proenkephalin Rattus norvegicus 136-146 1726498-3 1991 Leucine-enkephalin potentiated and methionine-enkephalin antagonized morphine or pentazocine analgesia. Morphine 69-77 proenkephalin Rattus norvegicus 46-56 1726498-3 1991 Leucine-enkephalin potentiated and methionine-enkephalin antagonized morphine or pentazocine analgesia. Pentazocine 81-92 proenkephalin Rattus norvegicus 46-56 1805300-0 1991 Distribution of Met5-enkephalin-Arg6-Gly7-Leu8-immunoreactivity in the rat and mouse pituitary gland. arg6-gly7-leu8 32-46 proenkephalin Rattus norvegicus 21-31 1805300-1 1991 The distribution of the octapeptide Met5-enkephalin-Arg6-Gly7-Leu8 (MEAGL), a proenkephalin A-derived opioid peptide, in the rat and mouse pituitary gland was studied using the indirect immunofluorescence technique and immunoelectron microscopy. gly7-leu8 57-66 proenkephalin Rattus norvegicus 41-51 1665789-3 1991 of a selective mu receptor agonist [D-Ala2,Mephe4,Gly-ol5]enkephalin (DAMGO) produced dose-related depression of coughs over the 0.003-0.03 nmol dose range. mephe4 43-49 proenkephalin Rattus norvegicus 58-68 1666431-2 1991 Agonists selective for mu[D-Ala2, MePhe4Gly(ol)5]enkephalin (DAGO) and delta opioid receptors [D-Pen2, D-Pen5]enkephalin (dPen-dPen), inhibited the dopamine but not the dopamine D1 stimulated adenylate cyclase. mu[d-ala2 23-32 proenkephalin Rattus norvegicus 110-120 1666431-2 1991 Agonists selective for mu[D-Ala2, MePhe4Gly(ol)5]enkephalin (DAGO) and delta opioid receptors [D-Pen2, D-Pen5]enkephalin (dPen-dPen), inhibited the dopamine but not the dopamine D1 stimulated adenylate cyclase. Deuterium 26-28 proenkephalin Rattus norvegicus 110-120 1666431-2 1991 Agonists selective for mu[D-Ala2, MePhe4Gly(ol)5]enkephalin (DAGO) and delta opioid receptors [D-Pen2, D-Pen5]enkephalin (dPen-dPen), inhibited the dopamine but not the dopamine D1 stimulated adenylate cyclase. dpen-dpen 122-131 proenkephalin Rattus norvegicus 110-120 1839239-0 1991 Quinolinic acid elevates striatal and pallidal Met-enkephalin levels: the role of enkephalin synthesis and release. Quinolinic Acid 0-15 proenkephalin Rattus norvegicus 51-61 1839239-3 1991 However, at 7 days post-injection, QUIN produced a dose-related and bilateral increase in the striatal and pallidal levels of met-enkephalin-like immunoreactivity (ME-i.r. Quinolinic Acid 35-39 proenkephalin Rattus norvegicus 130-140 1839239-8 1991 QUIN significantly depleted (50%) of the proenkephalin mRNA level in the injected, but not the contralateral striatum when compared to that in the saline-injected animals. Quinolinic Acid 0-4 proenkephalin Rattus norvegicus 41-54 1797559-0 1991 Characteristics of precipitated withdrawal from spinal morphine: changes in [Met5]enkephalin levels. Morphine 55-63 proenkephalin Rattus norvegicus 82-92 1797559-5 1991 However, 24 h after the naloxone challenge, there was a significant increase in spinal enkephalin levels in morphine-dependent animals. Naloxone 24-32 proenkephalin Rattus norvegicus 87-97 1654389-4 1991 As shown by nonlinear least-squares analysis, the mu opioids Tyr-D-Ala-Gly-(Me)Phe-Gly-ol or sufentanil abolished high-affinity [3H]naltrexone binding, whereas the delta-selective ligands [D-Pen2,D-Pen5]enkephalin, ICI 174,864, and oxymorphindole inhibited and eventually eliminated the low-affinity component in a concentration-dependent manner. Sufentanil 93-103 proenkephalin Rattus norvegicus 203-213 1684628-1 1991 Previous studies have shown changes in both somatostatin (SS)- and proenkephalin(PE)-derived peptides in the brains of amygdaloid-kindled rats, suggesting possible roles for the peptides in the kindling process. pe 81-83 proenkephalin Rattus norvegicus 67-80 1717819-1 1991 Transsynaptic neurogenic activity and reserpine are two signals that cause the proenkephalin (Penk) gene to alter the levels of preproenkephalin (PPenk) mRNA and enkephalin-containing (EC) peptides. Reserpine 38-47 proenkephalin Rattus norvegicus 94-98 1654389-4 1991 As shown by nonlinear least-squares analysis, the mu opioids Tyr-D-Ala-Gly-(Me)Phe-Gly-ol or sufentanil abolished high-affinity [3H]naltrexone binding, whereas the delta-selective ligands [D-Pen2,D-Pen5]enkephalin, ICI 174,864, and oxymorphindole inhibited and eventually eliminated the low-affinity component in a concentration-dependent manner. tyr-d-ala-gly-(me)phe-gly-ol 61-89 proenkephalin Rattus norvegicus 203-213 1654389-4 1991 As shown by nonlinear least-squares analysis, the mu opioids Tyr-D-Ala-Gly-(Me)Phe-Gly-ol or sufentanil abolished high-affinity [3H]naltrexone binding, whereas the delta-selective ligands [D-Pen2,D-Pen5]enkephalin, ICI 174,864, and oxymorphindole inhibited and eventually eliminated the low-affinity component in a concentration-dependent manner. Tritium 129-131 proenkephalin Rattus norvegicus 203-213 1660817-0 1991 Differences in the binding of [3H][D-Ser2,Thr6]leucine-enkephalin and [3H][D-Pen2,D-Pen5]enkephalin to brain membranes of morphine tolerant-dependent rats. Tritium 31-33 proenkephalin Rattus norvegicus 55-65 1678615-1 1991 mu opioids, such as morphine and certain enkephalin analogs, are known to modulate glutamate-evoked activity in dorsal horn neurons in the spinal cord and caudal brain stem. Glutamic Acid 83-92 proenkephalin Rattus norvegicus 41-51 1653834-1 1991 [D-Pen2,4"-125I-Phe4,D-Pen5]enkephalin ([125I]DPDPE) is a highly selective radioligand for the delta opioid receptor with a specific activity (2200 Ci/mmol) that is over 50-fold greater than that of tritium-labeled DPDPE analogs. [d-pen2,4"-125i-phe4 0-20 proenkephalin Rattus norvegicus 28-38 1653834-1 1991 [D-Pen2,4"-125I-Phe4,D-Pen5]enkephalin ([125I]DPDPE) is a highly selective radioligand for the delta opioid receptor with a specific activity (2200 Ci/mmol) that is over 50-fold greater than that of tritium-labeled DPDPE analogs. Tritium 199-206 proenkephalin Rattus norvegicus 28-38 1682832-0 1991 Diethylstilbesterol- and pregnancy-induced changes in rat neurointermediate lobe oxytocin, arginine vasopressin, methionine enkephalin and dynorphin. Diethylstilbestrol 0-19 proenkephalin Rattus norvegicus 124-134 1658636-0 1991 Proenkephalin gene expression in C6 rat glioma cells: potentiation of cyclic adenosine 3",5"-monophosphate-dependent transcription by glucocorticoids. Cyclic AMP 70-106 proenkephalin Rattus norvegicus 0-13 1658636-2 1991 To elucidate the mechanism(s) involved, we analyzed the potentiation by dexamethasone of the cAMP-dependent increase in proenkephalin mRNA levels elicited by forskolin in C6 rat glioma cells. Dexamethasone 72-85 proenkephalin Rattus norvegicus 120-133 1658636-2 1991 To elucidate the mechanism(s) involved, we analyzed the potentiation by dexamethasone of the cAMP-dependent increase in proenkephalin mRNA levels elicited by forskolin in C6 rat glioma cells. Cyclic AMP 93-97 proenkephalin Rattus norvegicus 120-133 1658636-2 1991 To elucidate the mechanism(s) involved, we analyzed the potentiation by dexamethasone of the cAMP-dependent increase in proenkephalin mRNA levels elicited by forskolin in C6 rat glioma cells. Colforsin 158-167 proenkephalin Rattus norvegicus 120-133 1658636-9 1991 Dexamethasone also reduced forskolin-stimulated CAT mRNA levels in C6 cells stably transfected with proenkephalin/CAT chimeric genes in the presence or absence of proteins synthesis. Dexamethasone 0-13 proenkephalin Rattus norvegicus 100-113 1658636-9 1991 Dexamethasone also reduced forskolin-stimulated CAT mRNA levels in C6 cells stably transfected with proenkephalin/CAT chimeric genes in the presence or absence of proteins synthesis. Colforsin 27-36 proenkephalin Rattus norvegicus 100-113 1933369-1 1991 Endogenous acetylcholine (ACh) release from rat neostriatal slices was inhibited by the mu-opioid agonist [D-Ala2,Gly(ol)5]-enkephalin (DAGO) both in 6-hydroxydopamine (6-OHDA)-lesioned and non-lesioned neostriatum. Acetylcholine 11-24 proenkephalin Rattus norvegicus 124-134 1933369-1 1991 Endogenous acetylcholine (ACh) release from rat neostriatal slices was inhibited by the mu-opioid agonist [D-Ala2,Gly(ol)5]-enkephalin (DAGO) both in 6-hydroxydopamine (6-OHDA)-lesioned and non-lesioned neostriatum. Acetylcholine 26-29 proenkephalin Rattus norvegicus 124-134 1933369-1 1991 Endogenous acetylcholine (ACh) release from rat neostriatal slices was inhibited by the mu-opioid agonist [D-Ala2,Gly(ol)5]-enkephalin (DAGO) both in 6-hydroxydopamine (6-OHDA)-lesioned and non-lesioned neostriatum. Oxidopamine 150-167 proenkephalin Rattus norvegicus 124-134 1933369-1 1991 Endogenous acetylcholine (ACh) release from rat neostriatal slices was inhibited by the mu-opioid agonist [D-Ala2,Gly(ol)5]-enkephalin (DAGO) both in 6-hydroxydopamine (6-OHDA)-lesioned and non-lesioned neostriatum. Oxidopamine 169-175 proenkephalin Rattus norvegicus 124-134 1855463-0 1991 Regulation of proenkephalin A messenger ribonucleic acid levels in normal B lymphocytes: specific inhibition by glucocorticoid hormones and superinduction by cycloheximide. Cycloheximide 158-171 proenkephalin Rattus norvegicus 14-29 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Prednisolone 142-154 proenkephalin Rattus norvegicus 28-31 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Dexamethasone 158-171 proenkephalin Rattus norvegicus 28-31 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Steroids 214-222 proenkephalin Rattus norvegicus 28-31 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Testosterone 232-244 proenkephalin Rattus norvegicus 28-31 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Steroids 214-221 proenkephalin Rattus norvegicus 28-31 1855463-4 1991 The transient expression of PEA messenger (m) RNA levels occurring normally in B cells was markedly inhibited by the presence of either 50 nM prednisolone or dexamethasone, both of which are glucocorticoids; other steroids, such as testosterone or the steroid-inactive metabolite androsterone, were ineffective. Androsterone 280-292 proenkephalin Rattus norvegicus 28-31 1855463-5 1991 In the presence of cycloheximide, a protein synthesis inhibitor, PEA mRNA was superinduced by a factor of 15-fold. Cycloheximide 19-32 proenkephalin Rattus norvegicus 65-68 1855463-6 1991 Sorting by flow cytometry of cycloheximide-treated cells followed by in situ hybridization analysis revealed that the expression of PEA mRNA was exclusively confined to a small fraction of B cells. Cycloheximide 29-42 proenkephalin Rattus norvegicus 132-135 1714957-1 1991 The isosteric methyleneoxy psi (CH2O) function was employed as a novel peptide-bond surrogate and incorporated into sequences of two neuropeptides, substance P (SP) and enkephalin. Formaldehyde 32-36 proenkephalin Rattus norvegicus 169-179 1717109-4 1991 In saline-treated control rats, striatal GAD activity and globus pallidus enkephalin content were elevated and nigral substance P content was reduced ipsilateral to the 6-OHDA lesion. Sodium Chloride 3-9 proenkephalin Rattus norvegicus 74-84 1924893-4 1991 On the other hand, the enkephalin analog, D-Ala2-metenkephalinamide (DAMEA, 1, 10 or 20 micrograms) produced dose-dependent attenuations in gastric stress pathology, the effects being most marked with the latter two doses. d-ala2-metenkephalinamide 42-67 proenkephalin Rattus norvegicus 23-33 1924893-4 1991 On the other hand, the enkephalin analog, D-Ala2-metenkephalinamide (DAMEA, 1, 10 or 20 micrograms) produced dose-dependent attenuations in gastric stress pathology, the effects being most marked with the latter two doses. damea 69-74 proenkephalin Rattus norvegicus 23-33 1924893-7 1991 The results indicate that TRH-enkephalin interactions are possible at the level of the CEA during CRS-induced gastric ulcer formation. 3-cresol 98-101 proenkephalin Rattus norvegicus 30-40 1933285-0 1991 Beta-endorphin and methionine-enkephalin levels in discrete brain regions, spinal cord, pituitary gland and plasma of morphine tolerant-dependent and abstinent rats. Morphine 118-126 proenkephalin Rattus norvegicus 30-40 1933285-8 1991 The levels of methionine-enkephalin in pons and medulla, amygdala, hippocampus and pituitary gland were decreased in morphine tolerant-dependent rats. Morphine 117-125 proenkephalin Rattus norvegicus 25-35 1933285-9 1991 During protracted abstinence from morphine, methionine-enkephalin levels in spinal cord, amygdala, pons and medulla, midbrain, cortex, corpus striatum and pituitary gland were decreased. Morphine 34-42 proenkephalin Rattus norvegicus 55-65 1933285-9 1991 During protracted abstinence from morphine, methionine-enkephalin levels in spinal cord, amygdala, pons and medulla, midbrain, cortex, corpus striatum and pituitary gland were decreased. Methionine 44-54 proenkephalin Rattus norvegicus 55-65 1933285-10 1991 The levels of methionine-enkephalin in hypothalamus and corpus striatum of naloxone-precipitated abstinent rats were increased but were decreased in amygdala and pituitary gland. Naloxone 75-83 proenkephalin Rattus norvegicus 25-35 1933285-11 1991 These results suggest that during morphine tolerance-dependence and during protracted abstinence beta-endorphin and methionine-enkephalin levels in discrete brain regions and pituitary gland are decreased. Morphine 34-42 proenkephalin Rattus norvegicus 127-137 1933430-1 1991 The use of a new and very sensitive immunohistochemical method, combined with intracerebral injections of colchicine, has allowed us to show that a number of nerve cell bodies immunoreactive for Met-enkephalin are present in several mesencephalic nuclei of the rat, including the different subdivisions of the substantia nigra (SN). Colchicine 106-116 proenkephalin Rattus norvegicus 199-209 1680033-7 1991 Treatment of newborn rats with 6-hydroxydopamine increased the expression of proenkephalin A mRNA by 1.6 fold but had no effect on the expression of preprosomatostatin mRNA. Oxidopamine 31-48 proenkephalin Rattus norvegicus 77-92 1680033-8 1991 The 6-hydroxydopamine-induced change in proenkephalin A mRNA expression was not observed until postnatal day 32, indicating that enkephalin-containing neurons of the developing striatum are relatively insensitive to dopamine input and that they cannot compensate for the neonatal lesion, despite the fact that the insult was given in a period of high plasticity of the neural tissue. Oxidopamine 4-21 proenkephalin Rattus norvegicus 40-55 1680033-8 1991 The 6-hydroxydopamine-induced change in proenkephalin A mRNA expression was not observed until postnatal day 32, indicating that enkephalin-containing neurons of the developing striatum are relatively insensitive to dopamine input and that they cannot compensate for the neonatal lesion, despite the fact that the insult was given in a period of high plasticity of the neural tissue. Oxidopamine 4-21 proenkephalin Rattus norvegicus 43-53 1680033-8 1991 The 6-hydroxydopamine-induced change in proenkephalin A mRNA expression was not observed until postnatal day 32, indicating that enkephalin-containing neurons of the developing striatum are relatively insensitive to dopamine input and that they cannot compensate for the neonatal lesion, despite the fact that the insult was given in a period of high plasticity of the neural tissue. Dopamine 13-21 proenkephalin Rattus norvegicus 40-55 1680033-8 1991 The 6-hydroxydopamine-induced change in proenkephalin A mRNA expression was not observed until postnatal day 32, indicating that enkephalin-containing neurons of the developing striatum are relatively insensitive to dopamine input and that they cannot compensate for the neonatal lesion, despite the fact that the insult was given in a period of high plasticity of the neural tissue. Dopamine 13-21 proenkephalin Rattus norvegicus 43-53 1717109-6 1991 In contrast, continuous levodopa elevated globus pallidus enkephalin beyond the levels occurring with denervation, but had no effect on any of the other neurochemical measures. Levodopa 24-32 proenkephalin Rattus norvegicus 58-68 1717109-8 1991 With the exception of substance P, levodopa did not reverse the effects of the 6-OHDA lesion but, rather, either exacerbated the lesion-induced changes (e.g. GAD and enkephalin) or altered neurochemical markers which had been unaffected by the lesion (e.g. CAT and dynorphin). Levodopa 35-43 proenkephalin Rattus norvegicus 166-176 1715806-2 1991 We examined the light and electron microscopic relationships between neurons containing methionine (Met5)-enkephalin-like immunoreactivity (MELI) and vagal afferents and motor dendrites in the rat NTS. Methionine 88-98 proenkephalin Rattus norvegicus 106-116 1655161-2 1991 Using [3H][Met5]-enkephalin, a potent ligand involved in neural growth, particularly cell proliferation, specific and saturable binding was detected in homogenates of 6-day-old rat cerebellum; the data were consistent with a single binding site. Tritium 7-10 proenkephalin Rattus norvegicus 17-27 1655161-8 1991 In the adult rat cerebellum, non-opioid receptor binding of [3H][Met5]-enkephalin was recorded, mu and kappa receptors were also found in the developing rat cerebellum, while mu, delta, and kappa receptors were recorded in adult cerebellar tissue. Tritium 61-63 proenkephalin Rattus norvegicus 71-81 1889828-5 1991 Thus potentiation of morphine induced antinociception by icv captopril is unlikely to be exerted through an effect on adrenal function and is most likely due to increased brain enkephalin levels. Morphine 21-29 proenkephalin Rattus norvegicus 177-187 1889828-5 1991 Thus potentiation of morphine induced antinociception by icv captopril is unlikely to be exerted through an effect on adrenal function and is most likely due to increased brain enkephalin levels. Captopril 61-70 proenkephalin Rattus norvegicus 177-187 1648137-5 1991 For example, [(2S,3S)-beta-MePhe4]DPDPE (2) is 1800-fold selective in binding to the delta vs mu receptor, making it one of the most selective delta opioid receptor ligands in the enkephalin series as assessed by the rat brain binding assay, whereas the corresponding (2R,3R)-beta-Me-p-NO2Phe-containing analogue 9 is only 4.5-fold selective (nonselective) in this same assay. 2s 15-17 proenkephalin Rattus norvegicus 180-190 1648137-5 1991 For example, [(2S,3S)-beta-MePhe4]DPDPE (2) is 1800-fold selective in binding to the delta vs mu receptor, making it one of the most selective delta opioid receptor ligands in the enkephalin series as assessed by the rat brain binding assay, whereas the corresponding (2R,3R)-beta-Me-p-NO2Phe-containing analogue 9 is only 4.5-fold selective (nonselective) in this same assay. 3s 18-20 proenkephalin Rattus norvegicus 180-190 1652797-5 1991 administration of beta-FNA alters the conformation of the opioid receptor complex, as inferred by a decrease in the Bmax of the lower affinity [3H][D-ala2,D-leu5]enkephalin binding site. Tritium 144-146 proenkephalin Rattus norvegicus 162-172 1651892-1 1991 Four groups of rats were trained to discriminate between the no-drug conditions (saline, s.c.) and the effect of s.c. injection of the novel enkephalin analog Tyr-D-Met (O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399, 1 mg/kg), morphine (3 mg/kg), ethylketocyclazocine (EKC, 0.3 mg/kg) or N-allylnormetazocine (NANM, 3 mg/kg) in a two-lever choice, water reinforced procedure. tyr-d-met (o)-gly-etphe-nhnhcoch3 159-192 proenkephalin Rattus norvegicus 141-151 1658661-10 1991 The selective mu-opioid receptor agonists [D-Ala2,NMePhe4,Gly-ol5]enkephalin and [D-Arg2,Lys4]-demorphin-(1----4)-amide reduced the release of radioactivity, whereas the selective delta opioid receptor agonist [D-Pen2,D-Pen5] enkephalin and the selective kappa opioid receptor agonist U-69593 had no effect. [d-ala2,nmephe4 42-57 proenkephalin Rattus norvegicus 226-236 1658661-10 1991 The selective mu-opioid receptor agonists [D-Ala2,NMePhe4,Gly-ol5]enkephalin and [D-Arg2,Lys4]-demorphin-(1----4)-amide reduced the release of radioactivity, whereas the selective delta opioid receptor agonist [D-Pen2,D-Pen5] enkephalin and the selective kappa opioid receptor agonist U-69593 had no effect. demorphin-(1----4)-amide 95-119 proenkephalin Rattus norvegicus 226-236 1652797-5 1991 administration of beta-FNA alters the conformation of the opioid receptor complex, as inferred by a decrease in the Bmax of the lower affinity [3H][D-ala2,D-leu5]enkephalin binding site. d-leu5 155-161 proenkephalin Rattus norvegicus 162-172 1652797-6 1991 Consistent with the decreased potency of naloxone as an inhibitor of delta receptor mediated effects, beta-FNA doubled the naloxone IC50 for displacing [3H][D-ala2,D-leu5]enkephalin from its lower affinity binding site. beta-funaltrexamine 102-110 proenkephalin Rattus norvegicus 171-181 1653636-4 1991 The delta ligand, [3H]DPDPE [( D-Pen2.5]-enkephalin), bound with a Kd of 4.31 nM, and the kappa-ligand, [3H]U69593, bound with a Kd of 2.27 nM. Tritium 19-21 proenkephalin Rattus norvegicus 41-51 1652797-6 1991 Consistent with the decreased potency of naloxone as an inhibitor of delta receptor mediated effects, beta-FNA doubled the naloxone IC50 for displacing [3H][D-ala2,D-leu5]enkephalin from its lower affinity binding site. Naloxone 123-131 proenkephalin Rattus norvegicus 171-181 1652797-6 1991 Consistent with the decreased potency of naloxone as an inhibitor of delta receptor mediated effects, beta-FNA doubled the naloxone IC50 for displacing [3H][D-ala2,D-leu5]enkephalin from its lower affinity binding site. Tritium 153-155 proenkephalin Rattus norvegicus 171-181 1652797-6 1991 Consistent with the decreased potency of naloxone as an inhibitor of delta receptor mediated effects, beta-FNA doubled the naloxone IC50 for displacing [3H][D-ala2,D-leu5]enkephalin from its lower affinity binding site. d-leu5 164-170 proenkephalin Rattus norvegicus 171-181 1673340-3 1991 Quinpirole had no effect on [Met5]- and [Leu5]-enkephalin levels but sulpiride produced an increase in both [Met5]- and [Leu5]-enkephalin content. Sulpiride 69-78 proenkephalin Rattus norvegicus 127-137 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). n-mephe4 34-42 proenkephalin Rattus norvegicus 52-62 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). 3h-damgo 106-114 proenkephalin Rattus norvegicus 52-62 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). DADLE 144-149 proenkephalin Rattus norvegicus 52-62 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). 3h-dadle 192-200 proenkephalin Rattus norvegicus 52-62 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). n-mephe3 252-260 proenkephalin Rattus norvegicus 52-62 1653081-3 1991 Opioid receptor sites for (D-Ala2,N-MePhe4,Gly-ol5)-enkephalin (DAMGO) binding were labelled with 4 nM of 3H-DAMGO; (D-Ala2,D-Leu5)-enkephalin (DADLE) binding sites were labelled with 4 nM of 3H-DADLE in the presence of 1 microM unlabelled mu-agonist (N-MePhe3,D-Pro4)-morphiceptin (PL107). d-pro4)-morphiceptin 261-281 proenkephalin Rattus norvegicus 52-62 1673340-5 1991 Quinpirole decreased [Met5]- and [Leu5]-enkephalin levels, while sulpiride decreased [Leu5]-enkephalin levels alone. Quinpirole 0-10 proenkephalin Rattus norvegicus 40-50 1673340-5 1991 Quinpirole decreased [Met5]- and [Leu5]-enkephalin levels, while sulpiride decreased [Leu5]-enkephalin levels alone. Sulpiride 65-74 proenkephalin Rattus norvegicus 92-102 1673340-5 1991 Quinpirole decreased [Met5]- and [Leu5]-enkephalin levels, while sulpiride decreased [Leu5]-enkephalin levels alone. leu5] 34-39 proenkephalin Rattus norvegicus 40-50 1856314-2 1991 In the present study, axonal transport, immunohistochemical and in situ hybridization histochemical techniques were used to determine whether enkephalin (ENK), a peptide known to be expressed in a number of somatostatin-containing medullary cell groups, is also expressed in the projection from the NTSc to the NAcf. nacf 311-315 proenkephalin Rattus norvegicus 154-157 1649365-4 1991 The effects of beta-endorphin and of Met-enkephalin were completely reversed by the delta opioid antagonist ICI 174,864 while the kappa-receptor specific antagonist binaltorphimine or the sigma-receptor specific antagonist DTG (1,3-di(2-tolyl) guanidine) respectively blocked the inhibitory actions of dynorphin A and of DADLE. binaltorphimine 165-180 proenkephalin Rattus norvegicus 41-51 1649365-4 1991 The effects of beta-endorphin and of Met-enkephalin were completely reversed by the delta opioid antagonist ICI 174,864 while the kappa-receptor specific antagonist binaltorphimine or the sigma-receptor specific antagonist DTG (1,3-di(2-tolyl) guanidine) respectively blocked the inhibitory actions of dynorphin A and of DADLE. 1,3-ditolylguanidine 223-226 proenkephalin Rattus norvegicus 41-51 1649365-4 1991 The effects of beta-endorphin and of Met-enkephalin were completely reversed by the delta opioid antagonist ICI 174,864 while the kappa-receptor specific antagonist binaltorphimine or the sigma-receptor specific antagonist DTG (1,3-di(2-tolyl) guanidine) respectively blocked the inhibitory actions of dynorphin A and of DADLE. 1,3-ditolylguanidine 228-253 proenkephalin Rattus norvegicus 41-51 1707436-0 1991 Dopamine-dependent postnatal development of enkephalin and tachykinin neurons of rat basal ganglia. Dopamine 0-8 proenkephalin Rattus norvegicus 44-54 1707436-1 1991 The influence of deprivation of the neurotransmitter dopamine (DA) on the development of [Met5]-enkephalin (ME) and substance P (SP) neuropeptide systems of the striatum was investigated in Sprague-Dawley rats. Dopamine 53-61 proenkephalin Rattus norvegicus 96-106 1707436-1 1991 The influence of deprivation of the neurotransmitter dopamine (DA) on the development of [Met5]-enkephalin (ME) and substance P (SP) neuropeptide systems of the striatum was investigated in Sprague-Dawley rats. Dopamine 63-65 proenkephalin Rattus norvegicus 96-106 1831883-1 1991 The effects of acutely administered opioid receptor agonists sufentanil, U50,488H and [D-Ala2,D-Leu5]-enkephalin (DADL) were observed upon dopamine D1 and D2 binding site density in the striatum of the rat. Dopamine 139-147 proenkephalin Rattus norvegicus 102-112 1924493-3 1991 Thiorphan and SCH 32615, at a concentration of 150 microM, were able to potentiate the enkephalin-induced epileptiform bursting, inducing an increase in the bursting duration and in the number of spikes per burst due to 3.5 microM DAEAM or 0.20 microM DAGO. Thiorphan 0-9 proenkephalin Rattus norvegicus 87-97 1924493-3 1991 Thiorphan and SCH 32615, at a concentration of 150 microM, were able to potentiate the enkephalin-induced epileptiform bursting, inducing an increase in the bursting duration and in the number of spikes per burst due to 3.5 microM DAEAM or 0.20 microM DAGO. SCH 32615 14-23 proenkephalin Rattus norvegicus 87-97 1924493-3 1991 Thiorphan and SCH 32615, at a concentration of 150 microM, were able to potentiate the enkephalin-induced epileptiform bursting, inducing an increase in the bursting duration and in the number of spikes per burst due to 3.5 microM DAEAM or 0.20 microM DAGO. Daeam 231-236 proenkephalin Rattus norvegicus 87-97 1886174-1 1991 The novel enkephalin analog Tyr-D-Met (O)-Gly-EtPhe-NHNHCOCH3 . tyr-d-met (o)-gly-etphe-nhnhcoch3 28-61 proenkephalin Rattus norvegicus 10-20 2023920-5 1991 Here we show that pEnkA mRNA is abundant in normal calvaria-derived cells and in osteosarcoma-derived cell lines ROS 17/2.8 and ROS 25/1. ros 113-116 proenkephalin Rattus norvegicus 18-23 2023920-5 1991 Here we show that pEnkA mRNA is abundant in normal calvaria-derived cells and in osteosarcoma-derived cell lines ROS 17/2.8 and ROS 25/1. ros 128-131 proenkephalin Rattus norvegicus 18-23 2023920-7 1991 pEnkA expression in ROS cells is decreased by osteogenin, an osteoinductive factor, and by the calcium-regulating hormone, 1,25-dihydroxyvitamin D3, whereas the osteoblastic phenotype marker, alkaline phosphatase, is increased by these factors. ros 20-23 proenkephalin Rattus norvegicus 0-5 2023920-7 1991 pEnkA expression in ROS cells is decreased by osteogenin, an osteoinductive factor, and by the calcium-regulating hormone, 1,25-dihydroxyvitamin D3, whereas the osteoblastic phenotype marker, alkaline phosphatase, is increased by these factors. Calcitriol 123-147 proenkephalin Rattus norvegicus 0-5 2023920-8 1991 These results together with the inhibitory effects of pEnkA-derived peptides on alkaline phosphatase activity in ROS 17/2.8 cells suggest that pEnkA is involved in bone development and provide a model system for further analysis of pEnkA expression during this process. ros 113-116 proenkephalin Rattus norvegicus 54-59 2023920-8 1991 These results together with the inhibitory effects of pEnkA-derived peptides on alkaline phosphatase activity in ROS 17/2.8 cells suggest that pEnkA is involved in bone development and provide a model system for further analysis of pEnkA expression during this process. ros 113-116 proenkephalin Rattus norvegicus 143-148 19215512-4 1991 The stable enkephalin analog, [D-Pen(2.5)]enkephalin, when injected into the third ventricle in a dose of 1.0 nmol, produced a significant and transient inhibition of luteinizing hormone secretion similar to that seen following injection of 2.0 nmol ANP. [d-pen(2 30-38 proenkephalin Rattus norvegicus 11-21 2023920-8 1991 These results together with the inhibitory effects of pEnkA-derived peptides on alkaline phosphatase activity in ROS 17/2.8 cells suggest that pEnkA is involved in bone development and provide a model system for further analysis of pEnkA expression during this process. ros 113-116 proenkephalin Rattus norvegicus 143-148 1650284-1 1991 The effects of the potent agonist (D-Pen2, D-Pen5) enkephalin (DPDPE), a conformationally restricted ligand which is highly selective for delta opioid receptors, were studied on the endogenous levels and regional distributions of selected mono- and divalent cations in rat brain and thoracic spinal cord by means of atomic absorption spectrophotometry. d-pen2 35-41 proenkephalin Rattus norvegicus 51-61 1675935-1 1991 The localization of the proenkephalin A-derived octapeptide, Met5-enkephalin-Arg6-Gly7-Leu8 (MEAGL), was studied in the major salivary glands of Sprague-Dawley and Wistar rats with the indirect immunofluorescence method. met5- 61-66 proenkephalin Rattus norvegicus 24-39 1675935-1 1991 The localization of the proenkephalin A-derived octapeptide, Met5-enkephalin-Arg6-Gly7-Leu8 (MEAGL), was studied in the major salivary glands of Sprague-Dawley and Wistar rats with the indirect immunofluorescence method. arg6-gly7-leu8 77-91 proenkephalin Rattus norvegicus 24-39 2004604-4 1991 Forty-eight percent of recombinant proenkephalin was glycosylated; glycosylation could be entirely prevented by the addition of tunicamycin. Tunicamycin 128-139 proenkephalin Rattus norvegicus 35-48 2004604-7 1991 Some of this isoelectric heterogeneity is due to phosphorylation; [32P] orthophosphate was readily incorporated into serine residues within newly synthesized proenkephalin. Phosphorus-32 67-70 proenkephalin Rattus norvegicus 158-171 2004604-7 1991 Some of this isoelectric heterogeneity is due to phosphorylation; [32P] orthophosphate was readily incorporated into serine residues within newly synthesized proenkephalin. Phosphates 72-86 proenkephalin Rattus norvegicus 158-171 2004604-7 1991 Some of this isoelectric heterogeneity is due to phosphorylation; [32P] orthophosphate was readily incorporated into serine residues within newly synthesized proenkephalin. Serine 117-123 proenkephalin Rattus norvegicus 158-171 1831887-4 1991 In contrast, rats treated with SCH23390 showed decreased striatal levels of proenkephalin mRNA. SCH 23390 31-39 proenkephalin Rattus norvegicus 76-89 2029727-4 1991 Depolarization with potassium chloride (KCl) or veratridine increases the expression of PENK mRNA in a time-dependent fashion, with a maximal increase of sixfold. Potassium Chloride 20-38 proenkephalin Rattus norvegicus 88-92 2029727-4 1991 Depolarization with potassium chloride (KCl) or veratridine increases the expression of PENK mRNA in a time-dependent fashion, with a maximal increase of sixfold. Potassium Chloride 40-43 proenkephalin Rattus norvegicus 88-92 2029727-4 1991 Depolarization with potassium chloride (KCl) or veratridine increases the expression of PENK mRNA in a time-dependent fashion, with a maximal increase of sixfold. Veratridine 48-59 proenkephalin Rattus norvegicus 88-92 2029727-7 1991 An increase in PENK mRNA levels has been also observed in cultures treated with 8-Br-cAMP, phorbol 12-myristate-13-acetate (TPA), or dexamethasone. 8-Bromo Cyclic Adenosine Monophosphate 80-89 proenkephalin Rattus norvegicus 15-19 2029727-7 1991 An increase in PENK mRNA levels has been also observed in cultures treated with 8-Br-cAMP, phorbol 12-myristate-13-acetate (TPA), or dexamethasone. Tetradecanoylphorbol Acetate 91-122 proenkephalin Rattus norvegicus 15-19 2029727-7 1991 An increase in PENK mRNA levels has been also observed in cultures treated with 8-Br-cAMP, phorbol 12-myristate-13-acetate (TPA), or dexamethasone. Tetradecanoylphorbol Acetate 124-127 proenkephalin Rattus norvegicus 15-19 2029727-7 1991 An increase in PENK mRNA levels has been also observed in cultures treated with 8-Br-cAMP, phorbol 12-myristate-13-acetate (TPA), or dexamethasone. Dexamethasone 133-146 proenkephalin Rattus norvegicus 15-19 2029727-11 1991 The increase in PENK mRNA in depolarized and in TPA-dexamethasone-, or 8-Br-cAMP-treated cultures was not accompanied by a significant increase in the amount of free immunoreactive met-enkephalin. Tetradecanoylphorbol Acetate 48-51 proenkephalin Rattus norvegicus 16-20 2029727-11 1991 The increase in PENK mRNA in depolarized and in TPA-dexamethasone-, or 8-Br-cAMP-treated cultures was not accompanied by a significant increase in the amount of free immunoreactive met-enkephalin. Dexamethasone 52-65 proenkephalin Rattus norvegicus 16-20 2029727-11 1991 The increase in PENK mRNA in depolarized and in TPA-dexamethasone-, or 8-Br-cAMP-treated cultures was not accompanied by a significant increase in the amount of free immunoreactive met-enkephalin. 8-Bromo Cyclic Adenosine Monophosphate 71-80 proenkephalin Rattus norvegicus 16-20 1707092-0 1991 Dopamine differentially regulates dynorphin, substance P, and enkephalin expression in striatal neurons: in situ hybridization histochemical analysis. Dopamine 0-8 proenkephalin Rattus norvegicus 62-72 1707092-1 1991 Dopamine regulation of the levels of dynorphin, enkephalin, and substance P messenger RNAs in rat striatal neurons was analyzed with in situ hybridization histochemistry (ISHH). Dopamine 0-8 proenkephalin Rattus norvegicus 48-58 1707092-11 1991 Enkephalin mRNA expression was not significantly altered by chronic apomorphine treatment but showed an average increase per cell of some 130% above control levels following 6-OHDA-induced lesions of the mesostriatal system. Apomorphine 68-79 proenkephalin Rattus norvegicus 0-10 1707092-11 1991 Enkephalin mRNA expression was not significantly altered by chronic apomorphine treatment but showed an average increase per cell of some 130% above control levels following 6-OHDA-induced lesions of the mesostriatal system. Oxidopamine 174-180 proenkephalin Rattus norvegicus 0-10 1707092-12 1991 In animals with a 6-OHDA lesion and apomorphine treatment, enkephalin mRNA was also elevated but not significantly above the levels produced by the lesions alone. Oxidopamine 18-24 proenkephalin Rattus norvegicus 59-69 1707092-12 1991 In animals with a 6-OHDA lesion and apomorphine treatment, enkephalin mRNA was also elevated but not significantly above the levels produced by the lesions alone. Apomorphine 36-47 proenkephalin Rattus norvegicus 59-69 1707094-8 1991 In rats pretreated with colchicine, SP-LI and ENK-LI were colocalized in small perikarya of lamina II and in some lamina I cells. Colchicine 24-34 proenkephalin Rattus norvegicus 46-49 19215512-4 1991 The stable enkephalin analog, [D-Pen(2.5)]enkephalin, when injected into the third ventricle in a dose of 1.0 nmol, produced a significant and transient inhibition of luteinizing hormone secretion similar to that seen following injection of 2.0 nmol ANP. [d-pen(2 30-38 proenkephalin Rattus norvegicus 42-52 19215512-5 1991 Pretreatment of the rats 15 min before peptide injection with the selective 5 opioid antagonist naltrindole (50 mug/2 mul saline) completely prevented the luteinizing hormone-inhibiting effects of both ANP and the enkephalin analog, delta opioid blockade failed to prevent the prolactin-inhibiting effect of ANP but did reverse the prolactin-stimulating effect of [D-Pen(2.5)]enkephalin. naltrindole 96-107 proenkephalin Rattus norvegicus 214-224 19215512-5 1991 Pretreatment of the rats 15 min before peptide injection with the selective 5 opioid antagonist naltrindole (50 mug/2 mul saline) completely prevented the luteinizing hormone-inhibiting effects of both ANP and the enkephalin analog, delta opioid blockade failed to prevent the prolactin-inhibiting effect of ANP but did reverse the prolactin-stimulating effect of [D-Pen(2.5)]enkephalin. naltrindole 96-107 proenkephalin Rattus norvegicus 376-386 19215512-5 1991 Pretreatment of the rats 15 min before peptide injection with the selective 5 opioid antagonist naltrindole (50 mug/2 mul saline) completely prevented the luteinizing hormone-inhibiting effects of both ANP and the enkephalin analog, delta opioid blockade failed to prevent the prolactin-inhibiting effect of ANP but did reverse the prolactin-stimulating effect of [D-Pen(2.5)]enkephalin. d-pen 365-370 proenkephalin Rattus norvegicus 214-224 2040075-2 1991 Enkephalin-immunoreactive ganglion cells and intraglandular fibers were detected again after the colchicine-pretreatment at P8W. Colchicine 97-107 proenkephalin Rattus norvegicus 0-10 2039950-0 1991 Ether anesthesia differentially affects the content of prepro-corticotropin-releasing hormone, prepro-neurotensin/neuromedin N and prepro-enkephalin mRNAs in the hypothalamic paraventricular nucleus of the rat. Ether 0-5 proenkephalin Rattus norvegicus 138-148 1649664-2 1991 In contrast to a labeling index (LI) of 35.8% in control animals, administration of the opioid peptide [Met5]-enkephalin (100 micrograms/kg) significantly reduced (10.6%) the proportion of cells incorporating [3H]thymidine; concomitant injection of 1 mg/kg naloxone blocked the inhibitory effects of [Met5]-enkephalin on cell division. 3h]thymidine 210-222 proenkephalin Rattus norvegicus 110-120 1649664-2 1991 In contrast to a labeling index (LI) of 35.8% in control animals, administration of the opioid peptide [Met5]-enkephalin (100 micrograms/kg) significantly reduced (10.6%) the proportion of cells incorporating [3H]thymidine; concomitant injection of 1 mg/kg naloxone blocked the inhibitory effects of [Met5]-enkephalin on cell division. Naloxone 257-265 proenkephalin Rattus norvegicus 110-120 1713116-2 1991 Retrograde labeling from the lateral septum in combination with immunocytochemical analyses for Enk and TRH in colchicine-treated rats has revealed that nearly all Enk- (and TRH-) containing perifornical neurons project to the lateral septum. Colchicine 111-121 proenkephalin Rattus norvegicus 164-167 1657046-0 1991 Leucine-enkephalin increases the level of inositol (1,4,5) triphosphate and releases calcium from an intracellular pool in rat ventricular cardiac myocytes. Inositol 1,4,5-Trisphosphate 42-71 proenkephalin Rattus norvegicus 8-18 1657046-0 1991 Leucine-enkephalin increases the level of inositol (1,4,5) triphosphate and releases calcium from an intracellular pool in rat ventricular cardiac myocytes. Calcium 85-92 proenkephalin Rattus norvegicus 8-18 1645431-0 1991 Rapid changes in the content of proenkephalin A and corticotrophin releasing hormone mRNAs in the paraventricular nucleus during morphine withdrawal in urethane-anaesthetized rats. Morphine 129-137 proenkephalin Rattus norvegicus 32-47 1657046-1 1991 In rat ventricular cardiomyocytes loaded with the fluorescent Ca2+ indicator Indo-1/AM, the delta opioid receptor agonist Leu-Enk caused Cai oscillations and abolished the caffeine-induced Cai transient. Caffeine 172-180 proenkephalin Rattus norvegicus 126-129 1645431-0 1991 Rapid changes in the content of proenkephalin A and corticotrophin releasing hormone mRNAs in the paraventricular nucleus during morphine withdrawal in urethane-anaesthetized rats. Urethane 152-160 proenkephalin Rattus norvegicus 32-47 1657046-5 1991 Thus, Leu-Enk induces depletion of Ca2+ from the SR by a receptor-mediated mechanism which appears to involve an increase in the intracellular level of Ins (1,4,5) P3. Inositol 1,4,5-Trisphosphate 152-166 proenkephalin Rattus norvegicus 10-13 1645431-2 1991 Urethane anaesthesia alone resulted in a significant increase in both CRH and proenkephalin transcripts. Urethane 0-8 proenkephalin Rattus norvegicus 78-91 1647849-5 1991 D-Pen2,L-Pen5-enkephalin (0.1-10 microM), a selective delta-opioid receptor agonist, produced a dose-related inhibition of the 25 mM K(+)-evoked tritium release. Tritium 145-152 proenkephalin Rattus norvegicus 14-24 1645431-11 1991 morphine-infused rats proenkephalin a mRNA in the PVN was significantly less than in controls. Morphine 0-8 proenkephalin Rattus norvegicus 22-35 1645431-13 1991 morphine-infused rats resulted in a doubling of hybridization to proenkephalin mRNA in the PVN which was significantly greater than that seen in the i.c.v. Morphine 0-8 proenkephalin Rattus norvegicus 65-78 1647849-5 1991 D-Pen2,L-Pen5-enkephalin (0.1-10 microM), a selective delta-opioid receptor agonist, produced a dose-related inhibition of the 25 mM K(+)-evoked tritium release. d-pen2 0-6 proenkephalin Rattus norvegicus 14-24 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. h-butyr-dmet 57-69 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. Glycine 70-73 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. Phenylalanine 75-78 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. h-bzltyr-dmet 97-110 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. h-butyr-dmet-gly 138-154 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. h-bzltyr-dmet-gly 97-114 proenkephalin Rattus norvegicus 37-47 1658758-2 1991 Synthesis of four new derivatives of enkephalin analogs: H-BuTyr-DMet-Gly- Phe-epsilon Ahx-OH 9, H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH 12, H-Butyr-DMet-Gly- -Phe-epsilon Ahx-epsilon Ahx-OH 15 and H-BzlTyr-DMet-Gly-Phe-epsilon Ahx-OH is reported. Phenylalanine 115-118 proenkephalin Rattus norvegicus 37-47 1678195-1 1991 Hydrolysis of [Leu]- and [Met]enkephalin was determined in whole rat plasma in vitro by using HPLC-ECD to measure Tyr, Tyr-Gly and Tyr-Gly-Gly formation. Tyrosine 114-117 proenkephalin Rattus norvegicus 30-40 1678195-1 1991 Hydrolysis of [Leu]- and [Met]enkephalin was determined in whole rat plasma in vitro by using HPLC-ECD to measure Tyr, Tyr-Gly and Tyr-Gly-Gly formation. Tyr-Gly 119-126 proenkephalin Rattus norvegicus 30-40 1678195-1 1991 Hydrolysis of [Leu]- and [Met]enkephalin was determined in whole rat plasma in vitro by using HPLC-ECD to measure Tyr, Tyr-Gly and Tyr-Gly-Gly formation. tyrosyl-glycyl-glycine 131-142 proenkephalin Rattus norvegicus 30-40 1678195-2 1991 Although [Leu]- and [Met]enkephalin did not differ in Tyr or Tyr-Gly accumulation, the amount of Tyr-Gly-Gly resulting from [Met]enkephalin hydrolysis was greater than that resulting from [Leu]enkephalin hydrolysis, and [Met]enkephalin"s half-life in plasma was slightly shorter than that of [Leu]enkephalin. Glycine 101-104 proenkephalin Rattus norvegicus 129-139 1678195-2 1991 Although [Leu]- and [Met]enkephalin did not differ in Tyr or Tyr-Gly accumulation, the amount of Tyr-Gly-Gly resulting from [Met]enkephalin hydrolysis was greater than that resulting from [Leu]enkephalin hydrolysis, and [Met]enkephalin"s half-life in plasma was slightly shorter than that of [Leu]enkephalin. Glycine 101-104 proenkephalin Rattus norvegicus 129-139 1678195-2 1991 Although [Leu]- and [Met]enkephalin did not differ in Tyr or Tyr-Gly accumulation, the amount of Tyr-Gly-Gly resulting from [Met]enkephalin hydrolysis was greater than that resulting from [Leu]enkephalin hydrolysis, and [Met]enkephalin"s half-life in plasma was slightly shorter than that of [Leu]enkephalin. Glycine 101-104 proenkephalin Rattus norvegicus 129-139 1678195-2 1991 Although [Leu]- and [Met]enkephalin did not differ in Tyr or Tyr-Gly accumulation, the amount of Tyr-Gly-Gly resulting from [Met]enkephalin hydrolysis was greater than that resulting from [Leu]enkephalin hydrolysis, and [Met]enkephalin"s half-life in plasma was slightly shorter than that of [Leu]enkephalin. Glycine 101-104 proenkephalin Rattus norvegicus 129-139 1685613-1 1991 The effect of chronic l-tetrahydropalmatine (l-THP) administration on the level of leucine enkephalin (Leu-Enk) in rat corpus striatum was studied. tetrahydropalmatine 22-43 proenkephalin Rattus norvegicus 107-110 1685613-1 1991 The effect of chronic l-tetrahydropalmatine (l-THP) administration on the level of leucine enkephalin (Leu-Enk) in rat corpus striatum was studied. tetrahydropalmatine 45-50 proenkephalin Rattus norvegicus 107-110 1685613-2 1991 After l-THP sc injection once daily for 2 wk, the striatal Leu-Enk level was elevated dose-dependently. tetrahydropalmatine 6-11 proenkephalin Rattus norvegicus 63-66 1685613-2 1991 After l-THP sc injection once daily for 2 wk, the striatal Leu-Enk level was elevated dose-dependently. Leucine 59-62 proenkephalin Rattus norvegicus 63-66 1685613-4 1991 When rats received sc Sch-23390, a selective D1 antagonist, 15 nmol.kg-1 tid for 2 wk, striatal content of Leu-Enk increased from 0.17 +/- SD 0.03 ng.mg-1 tissue in control group to 0.23 +/- SD 0.05 ng.mg-1 tissue in Sch-23390 group (n = 8, P less than 0.05). SCH 23390 22-31 proenkephalin Rattus norvegicus 111-114 1685613-4 1991 When rats received sc Sch-23390, a selective D1 antagonist, 15 nmol.kg-1 tid for 2 wk, striatal content of Leu-Enk increased from 0.17 +/- SD 0.03 ng.mg-1 tissue in control group to 0.23 +/- SD 0.05 ng.mg-1 tissue in Sch-23390 group (n = 8, P less than 0.05). Leucine 107-110 proenkephalin Rattus norvegicus 111-114 1685613-6 1991 The results suggested that the blockade of D1 receptors by l-THP might be responsible for the increase of the striatal Leu-Enk content in rat. tetrahydropalmatine 59-64 proenkephalin Rattus norvegicus 123-126 1648715-5 1991 [D-Pen2,D-Pen5]Enkephalin also modulates morphine-induced antinociception, but has very low affinity for the delta cx binding site in vitro. Morphine 41-49 proenkephalin Rattus norvegicus 15-25 1648715-2 1991 Evidence that [D-Pen2,D-Pen5]enkephalin interacts with high affinity at the delta cx binding site. delta cx 76-84 proenkephalin Rattus norvegicus 29-39 1685613-6 1991 The results suggested that the blockade of D1 receptors by l-THP might be responsible for the increase of the striatal Leu-Enk content in rat. Leucine 119-122 proenkephalin Rattus norvegicus 123-126 1648715-4 1991 The ability of subantinociceptive doses of [Leu5]enkephalin and [Met5]enkephalin to potentiate and attenuate morphine-induced antinociception, respectively, is thought to be mediated via their binding to the delta cx binding site. Morphine 109-117 proenkephalin Rattus norvegicus 49-59 1648715-5 1991 [D-Pen2,D-Pen5]Enkephalin also modulates morphine-induced antinociception, but has very low affinity for the delta cx binding site in vitro. delta cx 109-117 proenkephalin Rattus norvegicus 15-25 1674475-4 1991 [Leu5]Enkephalin also reduced [3H]NA release, but higher concentrations were necessary. Tritium 31-33 proenkephalin Rattus norvegicus 6-16 1988118-0 1991 Enhancement by methionine enkephalin of colon carcinogenesis induced by azoxymethane. Azoxymethane 72-84 proenkephalin Rattus norvegicus 26-36 1988118-4 1991 A combination of Met-enkephalin and naloxone attenuated the enhancing effect by Met-enkephalin on the development of colonic tumors. Naloxone 36-44 proenkephalin Rattus norvegicus 84-94 1988118-6 1991 During and after administration of the carcinogen, the bromodeoxyuridine-labeling indices of the colon mucosa and/or cancers were significantly increased in rats treated with Met-enkephalin. Bromodeoxyuridine 55-72 proenkephalin Rattus norvegicus 179-189 1988118-9 1991 Because naloxone is an opioid receptor antagonist, these findings also indicate that the enhancing effect of Met-enkephalin on colon carcinogenesis may be mediated through opioid receptors. Naloxone 8-16 proenkephalin Rattus norvegicus 113-123 1648715-4 1991 The ability of subantinociceptive doses of [Leu5]enkephalin and [Met5]enkephalin to potentiate and attenuate morphine-induced antinociception, respectively, is thought to be mediated via their binding to the delta cx binding site. Morphine 109-117 proenkephalin Rattus norvegicus 70-80 1648715-4 1991 The ability of subantinociceptive doses of [Leu5]enkephalin and [Met5]enkephalin to potentiate and attenuate morphine-induced antinociception, respectively, is thought to be mediated via their binding to the delta cx binding site. delta cx 208-216 proenkephalin Rattus norvegicus 49-59 1648715-4 1991 The ability of subantinociceptive doses of [Leu5]enkephalin and [Met5]enkephalin to potentiate and attenuate morphine-induced antinociception, respectively, is thought to be mediated via their binding to the delta cx binding site. delta cx 208-216 proenkephalin Rattus norvegicus 70-80 1851529-0 1991 Increased proenkephalin mRNA levels in the rat neostriatum following lesion of the ipsilateral nigrostriatal dopamine pathway with 1-methyl-4-phenylpyridinium ion (MPP+): reversal by embryonic nigral dopamine grafts. Dopamine 109-117 proenkephalin Rattus norvegicus 10-23 1851529-0 1991 Increased proenkephalin mRNA levels in the rat neostriatum following lesion of the ipsilateral nigrostriatal dopamine pathway with 1-methyl-4-phenylpyridinium ion (MPP+): reversal by embryonic nigral dopamine grafts. 1-Methyl-4-phenylpyridinium 131-162 proenkephalin Rattus norvegicus 10-23 1851529-0 1991 Increased proenkephalin mRNA levels in the rat neostriatum following lesion of the ipsilateral nigrostriatal dopamine pathway with 1-methyl-4-phenylpyridinium ion (MPP+): reversal by embryonic nigral dopamine grafts. mangion-purified polysaccharide (Candida albicans) 164-167 proenkephalin Rattus norvegicus 10-23 1851529-0 1991 Increased proenkephalin mRNA levels in the rat neostriatum following lesion of the ipsilateral nigrostriatal dopamine pathway with 1-methyl-4-phenylpyridinium ion (MPP+): reversal by embryonic nigral dopamine grafts. Dopamine 200-208 proenkephalin Rattus norvegicus 10-23 1851529-1 1991 In situ hybridization studies were performed to study the changes in proenkephalin mRNA levels in the neostriatum of rats with long-term (18 months) unilateral lesions of the nigrostriatal dopamine (DA) pathway induced by 1-methyl-4-phenylpyridinium ion (MPP+) and in animals bearing embryonic DA grafts implanted into the DA depleted striatum. Dopamine 189-197 proenkephalin Rattus norvegicus 69-82 1851529-1 1991 In situ hybridization studies were performed to study the changes in proenkephalin mRNA levels in the neostriatum of rats with long-term (18 months) unilateral lesions of the nigrostriatal dopamine (DA) pathway induced by 1-methyl-4-phenylpyridinium ion (MPP+) and in animals bearing embryonic DA grafts implanted into the DA depleted striatum. Dopamine 199-201 proenkephalin Rattus norvegicus 69-82 1851529-1 1991 In situ hybridization studies were performed to study the changes in proenkephalin mRNA levels in the neostriatum of rats with long-term (18 months) unilateral lesions of the nigrostriatal dopamine (DA) pathway induced by 1-methyl-4-phenylpyridinium ion (MPP+) and in animals bearing embryonic DA grafts implanted into the DA depleted striatum. 1-Methyl-4-phenylpyridinium 222-249 proenkephalin Rattus norvegicus 69-82 1674475-6 1991 The selective mu opioid receptor agonist, [D-Ala2,NMePhe4,Gly-ol5]enkephalin (DAGO), concentration dependently reduced the stimulus-evoked release of [3H]NA to the same extent as beta-endorphin did. nmephe4 50-57 proenkephalin Rattus norvegicus 66-76 1674475-6 1991 The selective mu opioid receptor agonist, [D-Ala2,NMePhe4,Gly-ol5]enkephalin (DAGO), concentration dependently reduced the stimulus-evoked release of [3H]NA to the same extent as beta-endorphin did. Enkephalin, Ala(2)-MePhe(4)-Gly(5)- 78-82 proenkephalin Rattus norvegicus 66-76 1674475-6 1991 The selective mu opioid receptor agonist, [D-Ala2,NMePhe4,Gly-ol5]enkephalin (DAGO), concentration dependently reduced the stimulus-evoked release of [3H]NA to the same extent as beta-endorphin did. Tritium 151-153 proenkephalin Rattus norvegicus 66-76 12106216-5 1991 Cryostat sections of colchicine-treated Wistar rat brains were incubated with specific antisera against F8Famide, NPY, YGGFMRGL (Met-enkephalin-Arg-Gly-Leu), or YGGFMRF (Met-enkephalin-Arg-Phe) raised in rabbits. Colchicine 21-31 proenkephalin Rattus norvegicus 133-143 1687937-8 1991 In contrast, enkephalin immunostaining was increased by 6-OHDA lesioning, and the effect was abolished by SKF-38393 but not LY-171555. Oxidopamine 56-62 proenkephalin Rattus norvegicus 13-23 1850080-0 1991 Systemic administration of kainic acid differentially regulates the levels of prodynorphin and proenkephalin mRNA and peptides in the rat hippocampus. Kainic Acid 27-38 proenkephalin Rattus norvegicus 95-108 12106216-5 1991 Cryostat sections of colchicine-treated Wistar rat brains were incubated with specific antisera against F8Famide, NPY, YGGFMRGL (Met-enkephalin-Arg-Gly-Leu), or YGGFMRF (Met-enkephalin-Arg-Phe) raised in rabbits. Colchicine 21-31 proenkephalin Rattus norvegicus 174-184 1896133-4 1991 Methionin enkephalin immunostaining was unevenly distributed in the striatum of control animals. N-acetylmethionine 0-9 proenkephalin Rattus norvegicus 10-20 1847734-0 1991 Morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin increase the intracellular free calcium in isolated rat myocytes--effect of naloxone or pretreatment with morphine. nme-phe4 22-30 proenkephalin Rattus norvegicus 40-50 1847734-0 1991 Morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin increase the intracellular free calcium in isolated rat myocytes--effect of naloxone or pretreatment with morphine. gly-ol 32-38 proenkephalin Rattus norvegicus 40-50 1847734-0 1991 Morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin increase the intracellular free calcium in isolated rat myocytes--effect of naloxone or pretreatment with morphine. Calcium 83-90 proenkephalin Rattus norvegicus 40-50 1847734-0 1991 Morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin increase the intracellular free calcium in isolated rat myocytes--effect of naloxone or pretreatment with morphine. Naloxone 127-135 proenkephalin Rattus norvegicus 40-50 1847734-0 1991 Morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin increase the intracellular free calcium in isolated rat myocytes--effect of naloxone or pretreatment with morphine. Morphine 157-165 proenkephalin Rattus norvegicus 40-50 1847734-1 1991 The purpose of the present study was firstly to determine whether morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin (DAGO), a highly selective mu-agonist, increased intracellular free calcium of rat myocytes and secondly to determine whether opioid receptors were involved. (d-ala2, nme-phe4 79-96 proenkephalin Rattus norvegicus 106-116 1847734-1 1991 The purpose of the present study was firstly to determine whether morphine and (D-Ala2, NMe-Phe4, Gly-ol)-enkephalin (DAGO), a highly selective mu-agonist, increased intracellular free calcium of rat myocytes and secondly to determine whether opioid receptors were involved. Calcium 185-192 proenkephalin Rattus norvegicus 106-116 1848338-1 1991 The effects of the potent delta opioid agonist (D-Pen2, D-Pen5)enkephalin (DPDPE) were studied on the endogenous levels and regional distribution of Zn2+ in rat central nervous system by means of flame atomic absorption spectrophotometry. Zinc 149-153 proenkephalin Rattus norvegicus 63-73 1656316-2 1991 Acute treatment (30 min) with forskolin (10(-5) M) or phorbol 12 myristate 13 acetate (10(-7) M) resulted, respectively, in a two- and seven-fold increase in methionine-enkephalin secretion. Colforsin 30-39 proenkephalin Rattus norvegicus 169-179 1717884-1 1991 Recent data have shown that [125I]D-Ala2, MePhe4, Met(o)ol5-enkephalin (FK-33-824) is a highly selective and specific mu opioid receptor ligand [Moyse et al. mephe4 42-48 proenkephalin Rattus norvegicus 60-70 1717884-1 1991 Recent data have shown that [125I]D-Ala2, MePhe4, Met(o)ol5-enkephalin (FK-33-824) is a highly selective and specific mu opioid receptor ligand [Moyse et al. fk-33 72-77 proenkephalin Rattus norvegicus 60-70 1656316-2 1991 Acute treatment (30 min) with forskolin (10(-5) M) or phorbol 12 myristate 13 acetate (10(-7) M) resulted, respectively, in a two- and seven-fold increase in methionine-enkephalin secretion. Tetradecanoylphorbol Acetate 54-85 proenkephalin Rattus norvegicus 169-179 1896133-6 1991 Seven months after the lesion of the nigrostriatal dopaminergic pathway, methionin enkephalin immunostaining was found to be increased in the denervated striatum by about 50%. N-acetylmethionine 73-82 proenkephalin Rattus norvegicus 83-93 1656316-2 1991 Acute treatment (30 min) with forskolin (10(-5) M) or phorbol 12 myristate 13 acetate (10(-7) M) resulted, respectively, in a two- and seven-fold increase in methionine-enkephalin secretion. Methionine 158-168 proenkephalin Rattus norvegicus 169-179 1683474-4 1991 Furthermore, [D-Ala2, D-Leu5]enkephalin inhibition of glutamate-evoked acetylcholine release was prevented by D2 antagonists in a concentration-dependent manner. [d-ala2, d-leu5 13-28 proenkephalin Rattus norvegicus 29-39 1656316-3 1991 Chronic treatment with forskolin or phorbol 12 myristate 13 acetate (24 h) induced a 100% increase in methionine-enkephalin content (forskolin) and on the other hand a 50% decrease in methionine-enkephalin (phorbol 12 myristate 13 acetate). Colforsin 23-32 proenkephalin Rattus norvegicus 113-123 1656316-3 1991 Chronic treatment with forskolin or phorbol 12 myristate 13 acetate (24 h) induced a 100% increase in methionine-enkephalin content (forskolin) and on the other hand a 50% decrease in methionine-enkephalin (phorbol 12 myristate 13 acetate). Colforsin 23-32 proenkephalin Rattus norvegicus 195-205 1656316-3 1991 Chronic treatment with forskolin or phorbol 12 myristate 13 acetate (24 h) induced a 100% increase in methionine-enkephalin content (forskolin) and on the other hand a 50% decrease in methionine-enkephalin (phorbol 12 myristate 13 acetate). Tetradecanoylphorbol Acetate 36-67 proenkephalin Rattus norvegicus 113-123 1656316-3 1991 Chronic treatment with forskolin or phorbol 12 myristate 13 acetate (24 h) induced a 100% increase in methionine-enkephalin content (forskolin) and on the other hand a 50% decrease in methionine-enkephalin (phorbol 12 myristate 13 acetate). Tetradecanoylphorbol Acetate 36-67 proenkephalin Rattus norvegicus 195-205 1656316-3 1991 Chronic treatment with forskolin or phorbol 12 myristate 13 acetate (24 h) induced a 100% increase in methionine-enkephalin content (forskolin) and on the other hand a 50% decrease in methionine-enkephalin (phorbol 12 myristate 13 acetate). Colforsin 133-142 proenkephalin Rattus norvegicus 113-123 1656316-6 1991 However, after stimulation with phorbol 12 myristate 13 acetate, the more potent methionine-enkephalin secretagogue, increased peptide synthesis is not sufficient to replenish methionine-enkephalin intracellular stores. Tetradecanoylphorbol Acetate 32-63 proenkephalin Rattus norvegicus 92-102 1659673-6 1991 [D-Ala2, NMe-Phe4, Gly-ol5]enkephalin produced a dose-related, naloxone-reversible inhibition of both the formalin-evoked pain behavior and fos expression in the cord. nme-phe4 9-17 proenkephalin Rattus norvegicus 27-37 1659673-6 1991 [D-Ala2, NMe-Phe4, Gly-ol5]enkephalin produced a dose-related, naloxone-reversible inhibition of both the formalin-evoked pain behavior and fos expression in the cord. Naloxone 63-71 proenkephalin Rattus norvegicus 27-37 1659673-6 1991 [D-Ala2, NMe-Phe4, Gly-ol5]enkephalin produced a dose-related, naloxone-reversible inhibition of both the formalin-evoked pain behavior and fos expression in the cord. Formaldehyde 106-114 proenkephalin Rattus norvegicus 27-37 1659673-10 1991 Furthermore, the dose of [D-Ala2, NMe-Phe4, Gly-ol5]enkephalin which produced approximately 50% inhibition of fos-like immunoreactivity in the neck and ventral regions of the spinal cord was without effect in the superficial dorsal horn. nme-phe4 34-42 proenkephalin Rattus norvegicus 52-62 1659673-10 1991 Furthermore, the dose of [D-Ala2, NMe-Phe4, Gly-ol5]enkephalin which produced approximately 50% inhibition of fos-like immunoreactivity in the neck and ventral regions of the spinal cord was without effect in the superficial dorsal horn. gly-ol5 44-51 proenkephalin Rattus norvegicus 52-62 1674114-0 1991 Immunohistochemical localization of [Met5]enkephalin and [Met5]enkephalin-Arg6-Gly7-Leu8 in sympathetic and parasympathetic neurons and nerve fibers projecting to the rat submandibular gland. arg6-gly7-leu8 74-88 proenkephalin Rattus norvegicus 63-73 1683474-4 1991 Furthermore, [D-Ala2, D-Leu5]enkephalin inhibition of glutamate-evoked acetylcholine release was prevented by D2 antagonists in a concentration-dependent manner. Glutamic Acid 54-63 proenkephalin Rattus norvegicus 29-39 1683474-4 1991 Furthermore, [D-Ala2, D-Leu5]enkephalin inhibition of glutamate-evoked acetylcholine release was prevented by D2 antagonists in a concentration-dependent manner. Acetylcholine 71-84 proenkephalin Rattus norvegicus 29-39 1683474-5 1991 Instead, in the 6-hydroxydopamine-lesioned side, while [D-Ala2, D-Leu5]enkephalin (1 microM) inhibition of glutamate-evoked acetylcholine release was completely abolished, morphine (1 microM) inhibition remained unchanged. Oxidopamine 16-33 proenkephalin Rattus norvegicus 71-81 1683474-5 1991 Instead, in the 6-hydroxydopamine-lesioned side, while [D-Ala2, D-Leu5]enkephalin (1 microM) inhibition of glutamate-evoked acetylcholine release was completely abolished, morphine (1 microM) inhibition remained unchanged. Glutamic Acid 107-116 proenkephalin Rattus norvegicus 71-81 1683474-5 1991 Instead, in the 6-hydroxydopamine-lesioned side, while [D-Ala2, D-Leu5]enkephalin (1 microM) inhibition of glutamate-evoked acetylcholine release was completely abolished, morphine (1 microM) inhibition remained unchanged. Acetylcholine 124-137 proenkephalin Rattus norvegicus 71-81 1683474-5 1991 Instead, in the 6-hydroxydopamine-lesioned side, while [D-Ala2, D-Leu5]enkephalin (1 microM) inhibition of glutamate-evoked acetylcholine release was completely abolished, morphine (1 microM) inhibition remained unchanged. Morphine 172-180 proenkephalin Rattus norvegicus 71-81 1646998-3 1991 Using binding surface analysis and irreversible ligands to increase the "resolving power" of the ligand binding assay, the results indicated that chronic morphine increased both the Bmax and Kd of the opioid receptor complex, labeled with either [3H][D-Ala2,D-Leu5]enkephalin, [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin or [3H]6-desoxy-6 beta-fluoronaltreone. Morphine 154-162 proenkephalin Rattus norvegicus 265-275 1683475-4 1991 The area of enkephalin-immunoreactive synaptic bouton profiles was significantly larger in the dopamine-depleted neostriatum and this increase was maximal in rats in which the lesion had been made 26 days or 13 months previously (50% increase). Dopamine 95-103 proenkephalin Rattus norvegicus 12-22 1646998-3 1991 Using binding surface analysis and irreversible ligands to increase the "resolving power" of the ligand binding assay, the results indicated that chronic morphine increased both the Bmax and Kd of the opioid receptor complex, labeled with either [3H][D-Ala2,D-Leu5]enkephalin, [3H][D-Ala2-MePhe4,Gly-ol5]enkephalin or [3H]6-desoxy-6 beta-fluoronaltreone. Morphine 154-162 proenkephalin Rattus norvegicus 304-314 2014216-11 1991 Leu-D(Ala)2-enkephalin, while showing enhanced stability against aminopeptidase hydrolysis, is hydrolyzed at the Gly-Phe bond by the endopeptidase. Glycine 113-116 proenkephalin Rattus norvegicus 12-22 1683475-8 1991 The increase in enkephalin immunoreactivity observed in the dopamine-depleted neostriatum in previous studies may be explained by the increase in the size of enkephalin-immunoreactive synaptic boutons found in the present ultrastructural investigation. Dopamine 60-68 proenkephalin Rattus norvegicus 16-26 2014216-11 1991 Leu-D(Ala)2-enkephalin, while showing enhanced stability against aminopeptidase hydrolysis, is hydrolyzed at the Gly-Phe bond by the endopeptidase. Phenylalanine 117-120 proenkephalin Rattus norvegicus 12-22 1683475-8 1991 The increase in enkephalin immunoreactivity observed in the dopamine-depleted neostriatum in previous studies may be explained by the increase in the size of enkephalin-immunoreactive synaptic boutons found in the present ultrastructural investigation. Dopamine 60-68 proenkephalin Rattus norvegicus 158-168 1881995-1 1991 The aim of this paper is to study the effect of 1, 2 or 3 months" administration of chlorpromazine (CPZ), thioridazine (TDZ) (2 or 6 mg/kg) or haloperidol (HAL) (0.25 or 1 mg/kg) IP on the level of leu- and met-enkephalin (ENK) in striatum. Haloperidol 156-159 proenkephalin Rattus norvegicus 223-226 2052491-0 1991 Nicotine-induced alteration in Tyr-Gly-Gly and Met-enkephalin in discrete brain nuclei reflects altered enkephalin neuron activity. Nicotine 0-8 proenkephalin Rattus norvegicus 51-61 2052491-0 1991 Nicotine-induced alteration in Tyr-Gly-Gly and Met-enkephalin in discrete brain nuclei reflects altered enkephalin neuron activity. Nicotine 0-8 proenkephalin Rattus norvegicus 104-114 2052491-0 1991 Nicotine-induced alteration in Tyr-Gly-Gly and Met-enkephalin in discrete brain nuclei reflects altered enkephalin neuron activity. Tyrosine 31-34 proenkephalin Rattus norvegicus 104-114 2052491-0 1991 Nicotine-induced alteration in Tyr-Gly-Gly and Met-enkephalin in discrete brain nuclei reflects altered enkephalin neuron activity. Glycylglycine 35-42 proenkephalin Rattus norvegicus 104-114 2052491-3 1991 Acute administration of nicotine may alter enkephalin release without affecting brain enkephalin level. Nicotine 24-32 proenkephalin Rattus norvegicus 43-53 2052491-5 1991 Concentrations of Tyr-Gly-Gly in brain were used to provide an index of enkephalin release in vivo. tyrosyl-glycyl-glycine 18-29 proenkephalin Rattus norvegicus 72-82 2052491-6 1991 Thus we examined the thesis that nicotine alters brain neuronal enkephalin release, by measuring Tyr-Gly-Gly levels in specific brain nuclei from rats treated with nicotine 0.3 mg/kg SC 10 min before decapitation. Nicotine 33-41 proenkephalin Rattus norvegicus 64-74 2052491-8 1991 Concomitantly, nicotine produced a significant decrease in native Met-enkephalin in central amygdala, flocculo-nodular lobe of cerebellum, caudal part of the ventrolateral medulla and intermediolateral cell column of the spinal cord. Nicotine 15-23 proenkephalin Rattus norvegicus 70-80 2052491-9 1991 It is probable that the effects of nicotine to increase Tyr-Gly-Gly and alter Met-enkephalin concentration are mediated by nicotine-induced release of enkephalin at these brain sites. Nicotine 35-43 proenkephalin Rattus norvegicus 82-92 2052491-9 1991 It is probable that the effects of nicotine to increase Tyr-Gly-Gly and alter Met-enkephalin concentration are mediated by nicotine-induced release of enkephalin at these brain sites. Nicotine 35-43 proenkephalin Rattus norvegicus 151-161 2052491-9 1991 It is probable that the effects of nicotine to increase Tyr-Gly-Gly and alter Met-enkephalin concentration are mediated by nicotine-induced release of enkephalin at these brain sites. tyrosyl-glycyl-glycine 56-67 proenkephalin Rattus norvegicus 151-161 2052491-9 1991 It is probable that the effects of nicotine to increase Tyr-Gly-Gly and alter Met-enkephalin concentration are mediated by nicotine-induced release of enkephalin at these brain sites. Nicotine 123-131 proenkephalin Rattus norvegicus 82-92 2052491-9 1991 It is probable that the effects of nicotine to increase Tyr-Gly-Gly and alter Met-enkephalin concentration are mediated by nicotine-induced release of enkephalin at these brain sites. Nicotine 123-131 proenkephalin Rattus norvegicus 151-161 2052491-10 1991 Furthermore, some of the physiologic and pharmacologic effects of nicotine may be mediated by such enkephalin release. Nicotine 66-74 proenkephalin Rattus norvegicus 99-109 1881995-3 1991 Apomorphine pretreatment significantly attenuated the elevation in ENK produced by chronic injections of NL. Apomorphine 0-11 proenkephalin Rattus norvegicus 67-70 1881995-4 1991 In perfusion fluid obtained from the lateral ventricle of animals treated 1 month with HAL a dose-dependent increase of ENK levels was observed, which was augmented by potassium ions. Haloperidol 87-90 proenkephalin Rattus norvegicus 120-123 1881995-4 1991 In perfusion fluid obtained from the lateral ventricle of animals treated 1 month with HAL a dose-dependent increase of ENK levels was observed, which was augmented by potassium ions. Potassium 168-177 proenkephalin Rattus norvegicus 120-123 1705673-2 1990 SP immunoreactivity is found to increase from 1 day postnatal (DPN) up to 20 DPN and decrease thereafter, whereas the SER and Leu-ENK-immunoreactive fibres and terminals seen as occasional fibres at 1, 5, and 10 DPN are better visualized from 20 DPN and gradually increase up to 40 DPN. Leucine 126-129 proenkephalin Rattus norvegicus 130-133 1707718-0 1990 The adaptation of enkephalin, tachykinin and monoamine neurons of the basal ganglia following neonatal dopaminergic denervation is dependent on the extent of dopamine depletion. Dopamine 103-111 proenkephalin Rattus norvegicus 18-28 1707724-3 1990 To determine whether there is a sex difference in steroid hormone regulation of PE gene expression we have examined the effects of estrogen and testosterone on PE mRNA levels in male rats. Testosterone 144-156 proenkephalin Rattus norvegicus 160-162 2173759-6 1990 Evidence for a peripheral site of action of enkephalin-like peptides in this model was provided by the antagonism of the actions of thiorphan/bestatin by quaternary naltrexone (10-20 mg kg-1 s.c.). Thiorphan 132-141 proenkephalin Rattus norvegicus 44-54 1701460-9 1990 In addition, the coexistence of 5HT with ENK appears to be much less common than the coexistence of 5HT with either SP or ppT. Serotonin 32-35 proenkephalin Rattus norvegicus 41-44 2082716-3 1990 To test the possible involvement of the enteric nervous system in the STa-stimulated alkaline secretion and potential difference, the mesenteric nerves were electrically stimulated or neuropeptide Y or methionine-enkephalin was infused intravenously. sta 70-73 proenkephalin Rattus norvegicus 213-223 1979718-6 1990 [D-Ala2,NMe-Phe4,Gly5-ol]enkephalin induced a concentration-dependent inhibition of GIP-stimulated SLI secretion, with 50% of maximal inhibition at 10 nM. nme-phe4 8-16 proenkephalin Rattus norvegicus 25-35 2280210-6 1990 On the day following cessation of prednisolone treatment at 09.00 h, basal and stress levels of CRF mRNA were significantly higher in rats killed at 20.00 h than at 13.00 h. Proenkephalin A mRNA transcripts were below quantifiable levels of detection in control or non-stressed prednisolone-treated animals at all the time-points studied. Prednisolone 34-46 proenkephalin Rattus norvegicus 174-189 2293097-1 1990 The distribution of [Met]enkephalin-Arg6-Gly7-Leu8 (MEAGL)-immunoreactive (-IR) neurons and its modification after enucleation have been investigated in the rat superior colliculus. arg6-gly7-leu8 36-50 proenkephalin Rattus norvegicus 25-35 2173759-6 1990 Evidence for a peripheral site of action of enkephalin-like peptides in this model was provided by the antagonism of the actions of thiorphan/bestatin by quaternary naltrexone (10-20 mg kg-1 s.c.). Naltrexone 165-175 proenkephalin Rattus norvegicus 44-54 2175238-7 1990 In contrast, the mu agonist [D-Ala2, MePhe4, Gly-ol]enkephalin consistently inhibited nociceptive responses of both multireceptive and nocispecific lamina I cells. mephe4 37-43 proenkephalin Rattus norvegicus 52-62 1965778-5 1990 With leucinthiol-enkephalin in biological assays which examine its inhibitory activity for electrically stimulated contractions of isolated smooth muscle, it was found that the reactive thiol group exists in the mu receptors present in the guinea pig ileum. Sulfhydryl Compounds 11-16 proenkephalin Rattus norvegicus 17-27 1965778-6 1990 Leucinthiol-enkephalin became bound covalently to this receptor-thiol group via disulfide formation after prolonged incubation. Sulfhydryl Compounds 6-11 proenkephalin Rattus norvegicus 12-22 1965778-6 1990 Leucinthiol-enkephalin became bound covalently to this receptor-thiol group via disulfide formation after prolonged incubation. Disulfides 80-89 proenkephalin Rattus norvegicus 12-22 1982556-3 1990 Rauwolscine 1 mumol/l antagonized the effects of both noradrenaline and UK 14,304, but potentiated the effects of [Met5]enkephalin and [D-Ala2, D-Leu5]enkephalin. Yohimbine 0-11 proenkephalin Rattus norvegicus 120-130 1982556-3 1990 Rauwolscine 1 mumol/l antagonized the effects of both noradrenaline and UK 14,304, but potentiated the effects of [Met5]enkephalin and [D-Ala2, D-Leu5]enkephalin. Yohimbine 0-11 proenkephalin Rattus norvegicus 151-161 1982556-6 1990 Naloxone 0.1 mumol/l antagonized both [Met5]enkephalin and [D-Ala2, D-Leu5]enkephalin, but failed to alter the effects of either noradrenaline or UK 14,304. Naloxone 0-8 proenkephalin Rattus norvegicus 44-54 1982556-6 1990 Naloxone 0.1 mumol/l antagonized both [Met5]enkephalin and [D-Ala2, D-Leu5]enkephalin, but failed to alter the effects of either noradrenaline or UK 14,304. Naloxone 0-8 proenkephalin Rattus norvegicus 75-85 1982556-9 1990 Noradrenaline 10 mumol/l produced the same depression of firing, both in the presence of noradrenaline 1 mumol/l and [Met5]enkephalin 0.03 mumol/l. Norepinephrine 0-13 proenkephalin Rattus norvegicus 123-133 2176915-2 1990 [D-Ala2, D-Leu5]-enkephalin (DADLE), applied by perfusion (0.01-3 microM) or droplets, dose-dependently hyperpolarized 85% of the DMV neurons tested. (2R,3R)-2,3-dihydroxy-3-methylpentanoic acid 130-133 proenkephalin Rattus norvegicus 17-27 2175238-7 1990 In contrast, the mu agonist [D-Ala2, MePhe4, Gly-ol]enkephalin consistently inhibited nociceptive responses of both multireceptive and nocispecific lamina I cells. gly-ol 45-51 proenkephalin Rattus norvegicus 52-62 2273455-5 1990 In view of the inhibitory effect of puromycin on the hydrolysis of leucine enkephalin, it was assumed that a significant fraction of the [3H]tyr-leucine enkephalin was absorbed intact in the presence of this substance. Puromycin 36-45 proenkephalin Rattus norvegicus 75-85 2222848-13 1990 It is envisaged that a dopamine-enkephalin link underlies the mechanism for the onset, maintenance and permanency of alcohol preference generated by an aldehyde adduct. Dopamine 23-31 proenkephalin Rattus norvegicus 32-42 2222848-13 1990 It is envisaged that a dopamine-enkephalin link underlies the mechanism for the onset, maintenance and permanency of alcohol preference generated by an aldehyde adduct. Alcohols 117-124 proenkephalin Rattus norvegicus 32-42 2222848-13 1990 It is envisaged that a dopamine-enkephalin link underlies the mechanism for the onset, maintenance and permanency of alcohol preference generated by an aldehyde adduct. Aldehydes 152-160 proenkephalin Rattus norvegicus 32-42 1697899-0 1990 Effect of acute and daily neurotensin and enkephalin treatments on extracellular dopamine in the nucleus accumbens. Dopamine 81-89 proenkephalin Rattus norvegicus 42-52 1697899-1 1990 The injection of neurotensin or the enkephalin analog Tyr-D-Ala-Gly-MePhe-Gly(ol) (DAMGO) into the A10 region of rats produces a motor stimulant effect that is associated with an increase in the postmortem levels of dopamine metabolites in the nucleus accumbens. tyr-d-ala-gly-mephe-gly 54-77 proenkephalin Rattus norvegicus 36-46 1697899-1 1990 The injection of neurotensin or the enkephalin analog Tyr-D-Ala-Gly-MePhe-Gly(ol) (DAMGO) into the A10 region of rats produces a motor stimulant effect that is associated with an increase in the postmortem levels of dopamine metabolites in the nucleus accumbens. ol 78-80 proenkephalin Rattus norvegicus 36-46 1697899-1 1990 The injection of neurotensin or the enkephalin analog Tyr-D-Ala-Gly-MePhe-Gly(ol) (DAMGO) into the A10 region of rats produces a motor stimulant effect that is associated with an increase in the postmortem levels of dopamine metabolites in the nucleus accumbens. Dopamine 216-224 proenkephalin Rattus norvegicus 36-46 2273455-3 1990 The major pathway for transport of radioactivity into the blood from the nasal cavity appeared to be hydrolysis of [3H]tyr-leucine enkephalin to [3H]L-tyrosine, followed by absorption of [3H]L-tyrosine. Tritium 116-119 proenkephalin Rattus norvegicus 131-141 2273455-3 1990 The major pathway for transport of radioactivity into the blood from the nasal cavity appeared to be hydrolysis of [3H]tyr-leucine enkephalin to [3H]L-tyrosine, followed by absorption of [3H]L-tyrosine. 3h]l-tyrosine 146-159 proenkephalin Rattus norvegicus 131-141 2273455-3 1990 The major pathway for transport of radioactivity into the blood from the nasal cavity appeared to be hydrolysis of [3H]tyr-leucine enkephalin to [3H]L-tyrosine, followed by absorption of [3H]L-tyrosine. Tritium 116-118 proenkephalin Rattus norvegicus 131-141 2273455-3 1990 The major pathway for transport of radioactivity into the blood from the nasal cavity appeared to be hydrolysis of [3H]tyr-leucine enkephalin to [3H]L-tyrosine, followed by absorption of [3H]L-tyrosine. Tyrosine 149-159 proenkephalin Rattus norvegicus 131-141 2273455-4 1990 When puromycin was added to the nasal solution in concentrations at which the in vitro hydrolysis of leucine enkephalin was completely inhibited, the appearance of radioactivity in the plasma was slowed, but plasma concentrations of radioactivity eventually reached levels comparable to those observed in the absence of puromycin. Puromycin 5-14 proenkephalin Rattus norvegicus 109-119 2177154-4 1990 The kappa 2 ligands (Met5)enkephalin-Arg6-Phe7 and etorphine also show high affinities to the frog brain. arg6-phe7 37-46 proenkephalin Rattus norvegicus 26-36 1963478-2 1990 Morphine or [D-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAGO) were used as mu-receptor agonists. [d-ala2,n-me-phe4 12-29 proenkephalin Rattus norvegicus 39-49 2177154-5 1990 Kappa 1 binding sites measured in the presence of 5 microM/D-Ala2-Leu5/enkephalin represent 25-30% of [3H]ethylketocyclazocine binding in frog brain membranes. Tritium 103-105 proenkephalin Rattus norvegicus 71-81 2233751-3 1990 To distinguish between these possibilities, the translational status of proenkephalin mRNA in the rat heart was established by Northern blot analysis of sucrose density gradient-sedimented polysomal fractions and compared to the striatum, which is known to efficiently translate proenkephalin transcripts. Sucrose 153-160 proenkephalin Rattus norvegicus 72-85 2177154-5 1990 Kappa 1 binding sites measured in the presence of 5 microM/D-Ala2-Leu5/enkephalin represent 25-30% of [3H]ethylketocyclazocine binding in frog brain membranes. Ethylketocyclazocine 106-126 proenkephalin Rattus norvegicus 71-81 2233751-6 1990 RIA of the culture media and extracts from primary cultures of neonatal rat cardiomyocytes indicated the presence of immunoreactive Met-enkephalin-Arg6-Phe7, which was stimulated by 8-(4-chlorophenylthio)cAMP. 8-((4-chlorophenyl)thio)cyclic-3',5'-AMP 182-208 proenkephalin Rattus norvegicus 136-146 2177154-6 1990 The kappa 2 subtype in frog brain resembles more to the mu subtype than the delta subtype of opioid receptors, but it differs from the mu subtype in displaying low affinity toward beta-endorphin and /D-Ala2-(Me)Phe4-Gly5-ol/enkephalin (DAGO). -ala2-(me)phe4-gly5-ol 201-223 proenkephalin Rattus norvegicus 224-234 1981853-0 1990 Nigrostriatal dopamine mediates the stimulatory effects of corticotropin releasing factor on methionine-enkephalin and dynorphin release from the rat neostriatum. Dopamine 14-22 proenkephalin Rattus norvegicus 104-114 1981853-3 1990 In the neostriatal slices of 6-OHDA-lesioned striata, both the basal release and tissue content of Met-enkephalin were significantly (P less than 0.01) higher (2-fold) than those of control animals and the contralateral hemisphere of 6-OHDA-lesioned animals; however, neither the basal release nor the tissue content of dynorphin in 6-OHDA-lesioned striata was significantly different from control striata. Oxidopamine 29-35 proenkephalin Rattus norvegicus 103-113 1981853-4 1990 In response to CRF (10(-10) M) the release of both Met-enkephalin and dynorphin were significantly diminished in slices of 6-OHDA-lesioned striata. Oxidopamine 123-129 proenkephalin Rattus norvegicus 55-65 1981853-6 1990 However, the results of this study demonstrate that the action of CRF on Met-enkephalin as well as dynorphin release from the rat neostriatum is DA dependent. amsonic acid 145-147 proenkephalin Rattus norvegicus 77-87 2177042-0 1990 Single residue modifications of the delta opioid receptor selective peptide, [D-Pen2,D-Pen5]-enkephalin (DPDPE). Enkephalin, D-Penicillamine (2,5)- 105-110 proenkephalin Rattus norvegicus 93-103 1700926-6 1990 Furthermore, the THC-treated animals had significantly elevated beta-endorphin and methionine-enkephalin levels in almost all the brain areas sampled for the study. Dronabinol 17-20 proenkephalin Rattus norvegicus 94-104 1977070-1 1990 The purpose of this study was to obtain direct evidence that the nigrostriatal dopamine (DA) pathway modulates the metabolism of striatal dynorphin and [Met5]-enkephalin. Dopamine 79-87 proenkephalin Rattus norvegicus 159-169 1977070-1 1990 The purpose of this study was to obtain direct evidence that the nigrostriatal dopamine (DA) pathway modulates the metabolism of striatal dynorphin and [Met5]-enkephalin. Dopamine 89-91 proenkephalin Rattus norvegicus 159-169 1977070-8 1990 In contrast, [Met5]-enkephalin-like immunoreactivity (ME-LI) in the striatum was increased by a 6-OHDA-lesion (145% of contralateral control), which was blocked by repeated administration of APO but not AMP. Oxidopamine 96-102 proenkephalin Rattus norvegicus 20-30 1977070-8 1990 In contrast, [Met5]-enkephalin-like immunoreactivity (ME-LI) in the striatum was increased by a 6-OHDA-lesion (145% of contralateral control), which was blocked by repeated administration of APO but not AMP. Dextroamphetamine 203-206 proenkephalin Rattus norvegicus 20-30 2177042-2 1990 Six analogs of the highly delta opioid receptor selective, conformationally restricted, cyclic peptide [D-Pen2,D-Pen5]enkephalin, Tyr-D-Pen-Gly-Phe-D-PenOH (DPDPE), were synthesized and evaluated for opioid activity in rat brain receptor binding and mouse vas deferens (MVD) smooth muscle assays. Enkephalin, pen(2,5)- 130-155 proenkephalin Rattus norvegicus 118-128 1976803-9 1990 Morphine, [Met5]enkephalin (ME) and [D-Ala2,N-Me-Phe4, Gly5-ol]enkephalin (DAMGO) depressed the amplitude of the GABA-mediated synaptic potential by a maximum of 50-65% and had little effect on the excitatory amino acid-mediated synaptic potential. [d-ala2,n-me-phe4 36-53 proenkephalin Rattus norvegicus 63-73 19215377-11 1990 Also in these cases the enkephalin analogue decreased LH and elevated growth hormone plasma levels, and naloxone brought about a rise in LH and a diminution of growth hormone concentration. Luteinizing Hormone 54-56 proenkephalin Rattus norvegicus 24-34 1976803-9 1990 Morphine, [Met5]enkephalin (ME) and [D-Ala2,N-Me-Phe4, Gly5-ol]enkephalin (DAMGO) depressed the amplitude of the GABA-mediated synaptic potential by a maximum of 50-65% and had little effect on the excitatory amino acid-mediated synaptic potential. gamma-Aminobutyric Acid 113-117 proenkephalin Rattus norvegicus 16-26 1976803-9 1990 Morphine, [Met5]enkephalin (ME) and [D-Ala2,N-Me-Phe4, Gly5-ol]enkephalin (DAMGO) depressed the amplitude of the GABA-mediated synaptic potential by a maximum of 50-65% and had little effect on the excitatory amino acid-mediated synaptic potential. gamma-Aminobutyric Acid 113-117 proenkephalin Rattus norvegicus 63-73 1976803-9 1990 Morphine, [Met5]enkephalin (ME) and [D-Ala2,N-Me-Phe4, Gly5-ol]enkephalin (DAMGO) depressed the amplitude of the GABA-mediated synaptic potential by a maximum of 50-65% and had little effect on the excitatory amino acid-mediated synaptic potential. Excitatory Amino Acids 198-219 proenkephalin Rattus norvegicus 63-73 2214369-1 1990 The physical dependence potential of Tyr-D-Met(O)-Gly-EtPhe-NHNHCOCH3.AcOH (EK-399), a novel enkephalin analog with a potent analgesic effect, was assessed in rats. Acetic Acid 70-74 proenkephalin Rattus norvegicus 93-103 1698246-0 1990 Striatal preprotachykinin and preproenkephalin mRNA levels and the levels of nigral substance P and pallidal Met5-enkephalin depend on corticostriatal axons that use the excitatory amino acid neurotransmitters aspartate and glutamate: quantitative radioimmunocytochemical and in situ hybridization evidence. Excitatory Amino Acids 170-191 proenkephalin Rattus norvegicus 36-46 1976029-1 1990 Kelatorphan, an inhibitor of the enkephalin-degrading enzymes, infused by microdialysis (10(-6) M) in the striatum of anaesthetized rats, significantly increased dopamine (DA) output but left dihydroxyphenylacetic acid and homovanillic acid extracellular levels unchanged. kelatorphan 0-11 proenkephalin Rattus norvegicus 33-43 2164573-6 1990 Scatchard analysis of binding of the mu-specific ligand [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin to embryonic striatal cell membranes revealed an apparent single class of sites with an affinity (KD) of 0.4 +/- 0.1 nM and a density (Bmax) of 160 +/- 20 fmol/mg of protein. Tritium 57-59 proenkephalin Rattus norvegicus 85-95 2164573-6 1990 Scatchard analysis of binding of the mu-specific ligand [3H]D-Ala2,N-Me-Phe4,Gly-ol5-enkephalin to embryonic striatal cell membranes revealed an apparent single class of sites with an affinity (KD) of 0.4 +/- 0.1 nM and a density (Bmax) of 160 +/- 20 fmol/mg of protein. n-me-phe4 67-76 proenkephalin Rattus norvegicus 85-95 2167356-4 1990 In PC12 and C6-glioma cells, depolarization-induced expression of a transfected proenkephalin fusion gene was proportional to extracellular calcium concentration and was inhibited by verapamil. Calcium 140-147 proenkephalin Rattus norvegicus 80-93 2167356-4 1990 In PC12 and C6-glioma cells, depolarization-induced expression of a transfected proenkephalin fusion gene was proportional to extracellular calcium concentration and was inhibited by verapamil. Verapamil 183-192 proenkephalin Rattus norvegicus 80-93 1966375-3 1990 The delta-selective agonist [D-Ala2, D-Leu5]-enkephalin and the kappa-selective agonist U-50, 488H both inhibited control and Ca(2+)-stimulated [3H]-diprenorphine binding to the sarcolemma, whereas [D-Ala2,MePhe4,Gly-(ol)5]-enkephalin was ineffective. u-50 88-92 proenkephalin Rattus norvegicus 224-234 2173185-0 1990 [The effect of modification of the carboxyl group in short D-arginine 2-containing enkephalin analogs on their affinity and selectivity for opiate receptors]. d-arginine 2 59-71 proenkephalin Rattus norvegicus 83-93 2173185-2 1990 The affinity to mu-specific opiate receptor subtype of the N-terminal [D-Arg2] tetrapeptide ethyl ester was 44 times as high as that of the tripeptide with a free carboxyl, and thus the ester retained up to 10% of leucine-enkephalin binding potency. ethyl ester 92-103 proenkephalin Rattus norvegicus 222-232 2173185-2 1990 The affinity to mu-specific opiate receptor subtype of the N-terminal [D-Arg2] tetrapeptide ethyl ester was 44 times as high as that of the tripeptide with a free carboxyl, and thus the ester retained up to 10% of leucine-enkephalin binding potency. Esters 98-103 proenkephalin Rattus norvegicus 222-232 2173185-5 1990 Substitution of the natural glycine residue by D-arginine residue in position 2 of the enkephalin molecule truncated at the C-terminus increased the mu-receptor binding potency of the tetrapeptide, whereas its delta receptor binding potency declined by more than one order of magnitude. Glycine 28-35 proenkephalin Rattus norvegicus 87-97 2173185-5 1990 Substitution of the natural glycine residue by D-arginine residue in position 2 of the enkephalin molecule truncated at the C-terminus increased the mu-receptor binding potency of the tetrapeptide, whereas its delta receptor binding potency declined by more than one order of magnitude. D-Arginine 47-57 proenkephalin Rattus norvegicus 87-97 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. glycine2 28-36 proenkephalin Rattus norvegicus 97-107 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. glycine2 28-36 proenkephalin Rattus norvegicus 219-229 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. d-arginine2 40-51 proenkephalin Rattus norvegicus 97-107 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. d-arginine2 40-51 proenkephalin Rattus norvegicus 219-229 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. tyr--d--arg--gly--phe--nh2 117-143 proenkephalin Rattus norvegicus 97-107 2173185-6 1990 Simultaneous replacement of glycine2 by D-arginine2 and carboxyl amidation resulted in the short enkephalin analogue Tyr--D--Arg--Gly--Phe--NH2, whose affinity to mu receptors was four times as high as that of leucine--enkephalin, the tetrapeptide being 284 times more selective for the mu vs. delta opiate receptors. tyr--d--arg--gly--phe--nh2 117-143 proenkephalin Rattus norvegicus 219-229 2207626-9 1990 These data suggest that in the presence of a strong thermal stimulus, the behavioral response is subject to a tonically active or stimulus-evoked modulation by the local release in the PAG, VM and AM of an agent, presumably an enkephalin peptide, the degradation of which is altered by enkephalinase inhibition. phenylacetylglycine 185-188 proenkephalin Rattus norvegicus 227-237 2166200-0 1990 Estradiol induction of proenkephalin messenger RNA in hypothalamus: dose-response and relation to reproductive behavior in the female rat. Estradiol 0-9 proenkephalin Rattus norvegicus 23-36 2166200-4 1990 Estradiol treatment led to a monotonic dose-dependent increase in PE mRNA level in VMN, while only a small effect was observed in POA at the higher estradiol doses. Estradiol 0-9 proenkephalin Rattus norvegicus 66-68 2381499-3 1990 Leu-ENK significantly reduced K(+)-evoked DA release in young animals, but neither opiate affected DA release in old animals. Leucine 0-3 proenkephalin Rattus norvegicus 4-7 2381499-3 1990 Leu-ENK significantly reduced K(+)-evoked DA release in young animals, but neither opiate affected DA release in old animals. Dopamine 42-44 proenkephalin Rattus norvegicus 4-7 2166675-3 1990 In the frontal cortex, the mu agonist, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO, 0.01-1 microM), also inhibited the evoked release of tritium. mephe4 47-53 proenkephalin Rattus norvegicus 62-72 2166675-3 1990 In the frontal cortex, the mu agonist, [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO, 0.01-1 microM), also inhibited the evoked release of tritium. Tritium 133-140 proenkephalin Rattus norvegicus 62-72 2166675-5 1990 [14C]ACh release from both the nucleus accumbens and olfactory tubercle, but not from the frontal cortex, was inhibited by DAGO (0.01-1 microM) and the delta agonist, [D-Pen2,D-Pen5]enkephalin (DPDPE, 0.01-1 microM). Carbon-14 1-4 proenkephalin Rattus norvegicus 182-192 2166675-5 1990 [14C]ACh release from both the nucleus accumbens and olfactory tubercle, but not from the frontal cortex, was inhibited by DAGO (0.01-1 microM) and the delta agonist, [D-Pen2,D-Pen5]enkephalin (DPDPE, 0.01-1 microM). Acetylcholine 5-8 proenkephalin Rattus norvegicus 182-192 1966375-3 1990 The delta-selective agonist [D-Ala2, D-Leu5]-enkephalin and the kappa-selective agonist U-50, 488H both inhibited control and Ca(2+)-stimulated [3H]-diprenorphine binding to the sarcolemma, whereas [D-Ala2,MePhe4,Gly-(ol)5]-enkephalin was ineffective. 488h 94-98 proenkephalin Rattus norvegicus 224-234 1966375-3 1990 The delta-selective agonist [D-Ala2, D-Leu5]-enkephalin and the kappa-selective agonist U-50, 488H both inhibited control and Ca(2+)-stimulated [3H]-diprenorphine binding to the sarcolemma, whereas [D-Ala2,MePhe4,Gly-(ol)5]-enkephalin was ineffective. 3h]-diprenorphine 145-162 proenkephalin Rattus norvegicus 45-55 1966375-3 1990 The delta-selective agonist [D-Ala2, D-Leu5]-enkephalin and the kappa-selective agonist U-50, 488H both inhibited control and Ca(2+)-stimulated [3H]-diprenorphine binding to the sarcolemma, whereas [D-Ala2,MePhe4,Gly-(ol)5]-enkephalin was ineffective. 3h]-diprenorphine 145-162 proenkephalin Rattus norvegicus 224-234 1966375-3 1990 The delta-selective agonist [D-Ala2, D-Leu5]-enkephalin and the kappa-selective agonist U-50, 488H both inhibited control and Ca(2+)-stimulated [3H]-diprenorphine binding to the sarcolemma, whereas [D-Ala2,MePhe4,Gly-(ol)5]-enkephalin was ineffective. [d-ala2,mephe4 198-212 proenkephalin Rattus norvegicus 45-55 19215358-2 1990 The specific mu agonist, DAGO ((D-Ala(2), NMe-Phe(4), Gly-ol(5))-enkephalin) was the most effective in eliciting prolactin release, the smallest effective dose being 0.01 nmoles. nme-phe 42-49 proenkephalin Rattus norvegicus 65-75 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Thioridazine 97-109 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Clozapine 123-132 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Molindone 137-146 proenkephalin Rattus norvegicus 50-53 19215358-2 1990 The specific mu agonist, DAGO ((D-Ala(2), NMe-Phe(4), Gly-ol(5))-enkephalin) was the most effective in eliciting prolactin release, the smallest effective dose being 0.01 nmoles. gly-ol 54-60 proenkephalin Rattus norvegicus 65-75 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Thioridazine 160-172 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Molindone 177-186 proenkephalin Rattus norvegicus 50-53 2143133-8 1990 Boroleucine prolonged the leucine enkephalin degradation half-life 1.6-1.9-fold in each medium at 0.1 microM concentrations, 1/1000th the concentration of leucine enkephalin. boroleucine 0-11 proenkephalin Rattus norvegicus 34-44 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Clozapine 200-209 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Thioridazine 160-172 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Molindone 177-186 proenkephalin Rattus norvegicus 50-53 1971007-3 1990 All three atypical neuroleptics studied increased PEK mRNA in the following order: anterior-CPU, thioridazine greater than clozapine and molindone; medial-CPU, thioridazine and molindone greater than clozapine; and NAc, thioridazine much greater than molindone and clozapine. Clozapine 200-209 proenkephalin Rattus norvegicus 50-53 1971007-4 1990 Chronic treatment with the specific dopamine D2 antagonist sulpiride also caused elevation in PEK mRNA levels in all three brain regions studied whereas the specific serotonin S2 receptor blocker, cinanserin, had no significant effects on PEK mRNA levels. Dopamine 36-44 proenkephalin Rattus norvegicus 94-97 1971007-4 1990 Chronic treatment with the specific dopamine D2 antagonist sulpiride also caused elevation in PEK mRNA levels in all three brain regions studied whereas the specific serotonin S2 receptor blocker, cinanserin, had no significant effects on PEK mRNA levels. Sulpiride 59-68 proenkephalin Rattus norvegicus 94-97 2364280-1 1990 Methionine (Met) enkephalin is detectable in rat hypothalamic and neurointermediate lobe (NIL) tissue extracts using a specific radioimmunoassay. Methionine 0-10 proenkephalin Rattus norvegicus 17-27 2364280-1 1990 Methionine (Met) enkephalin is detectable in rat hypothalamic and neurointermediate lobe (NIL) tissue extracts using a specific radioimmunoassay. Methionine 12-16 proenkephalin Rattus norvegicus 17-27 2364280-5 1990 Amounts of Met-enkephalin in these tissues were further decreased after 12 days of 340 mmol NaCl/l (3.4 +/- 0.4 and 6.0 +/- 0.6 pmol). Sodium Chloride 92-96 proenkephalin Rattus norvegicus 15-25 2143133-8 1990 Boroleucine prolonged the leucine enkephalin degradation half-life 1.6-1.9-fold in each medium at 0.1 microM concentrations, 1/1000th the concentration of leucine enkephalin. boroleucine 0-11 proenkephalin Rattus norvegicus 163-173 2143133-10 1990 Boroleucine also inhibited the degradation of des-tyrosyl-leucine enkephalin added to whole blood, but did not inhibit its degradation in muscle or brain homogenates. boroleucine 0-11 proenkephalin Rattus norvegicus 66-76 1969475-4 1990 Dynorphin 1-17, 1-9, 1-8, 1-6, [Leu5]enkephalin, DPDPE and DSLET dose dependently stimulated the tone in the proximal, middle and distal colon with the maximum response at 10(-6) to 10(-5) M. The stimulation produced by Tyr-Gly-Gly-Phe and Tyr-Gly-Gly was 60 and 600 times less potent, respectively. tyrosyl-glycyl-glycyl-phenylalanyl 220-235 proenkephalin Rattus norvegicus 37-47 2350675-6 1990 Thus, enkephalin and CCK interact to modulate amphetamine-induced locomotor stereotypy. Amphetamine 46-57 proenkephalin Rattus norvegicus 6-16 2313292-0 1990 Haloperidol-induced increase in striatal concentration of the tripeptide, Tyr-Gly-Gly, provides an index of increased enkephalin release in vivo. Haloperidol 0-11 proenkephalin Rattus norvegicus 118-128 2313292-0 1990 Haloperidol-induced increase in striatal concentration of the tripeptide, Tyr-Gly-Gly, provides an index of increased enkephalin release in vivo. tripeptide K-26 62-72 proenkephalin Rattus norvegicus 118-128 2313292-0 1990 Haloperidol-induced increase in striatal concentration of the tripeptide, Tyr-Gly-Gly, provides an index of increased enkephalin release in vivo. tyrosyl-glycyl-glycine 74-85 proenkephalin Rattus norvegicus 118-128 2313292-1 1990 A sensitive and specific radioimmunoassay has been developed for the tripeptide, Tyr-Gly-Gly, which has been shown previously to be an extraneuronal metabolite of opioid peptides derived from proenkephalin A. tripeptide K-26 69-79 proenkephalin Rattus norvegicus 192-207 2313292-1 1990 A sensitive and specific radioimmunoassay has been developed for the tripeptide, Tyr-Gly-Gly, which has been shown previously to be an extraneuronal metabolite of opioid peptides derived from proenkephalin A. tyrosyl-glycyl-glycine 81-92 proenkephalin Rattus norvegicus 192-207 2313292-5 1990 Further confirmation of the validity of measurements of brain Tyr-Gly-Gly as indices of enkephalin release under conditions of altered neuronal activity was provided by our demonstration that chronic dopamine receptor blockade with haloperidol increased striatal concentrations of both Met-enkephalin and Tyr-Gly-Gly. Haloperidol 232-243 proenkephalin Rattus norvegicus 88-98 2313292-5 1990 Further confirmation of the validity of measurements of brain Tyr-Gly-Gly as indices of enkephalin release under conditions of altered neuronal activity was provided by our demonstration that chronic dopamine receptor blockade with haloperidol increased striatal concentrations of both Met-enkephalin and Tyr-Gly-Gly. Haloperidol 232-243 proenkephalin Rattus norvegicus 290-300 2182020-3 1990 Processing of 35S-(Met)-PPE, as well as endogenous enkephalin intermediates, was inhibited by pepstatin A and stimulated by DTT. pepstatin 94-105 proenkephalin Rattus norvegicus 51-61 2182020-3 1990 Processing of 35S-(Met)-PPE, as well as endogenous enkephalin intermediates, was inhibited by pepstatin A and stimulated by DTT. Dithiothreitol 124-127 proenkephalin Rattus norvegicus 51-61 2158852-4 1990 The delta-receptor selective opioid peptide [D-Pen2, D-Pen5]enkephalin (0.3 micromol/l) inhibited [3H]acetylcholine release in all groups, although its effect was smaller in grafts than in normal tissue. Acetylcholine 98-115 proenkephalin Rattus norvegicus 60-70 2158852-5 1990 The preferential mu-receptor agonist [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin also reduced [3H]acetylcholine release in all groups, but only at the high concentration of 10 micromols/l. n-methyl-phe4, 45-59 proenkephalin Rattus norvegicus 67-77 2158852-5 1990 The preferential mu-receptor agonist [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin also reduced [3H]acetylcholine release in all groups, but only at the high concentration of 10 micromols/l. Tritium 92-94 proenkephalin Rattus norvegicus 67-77 2158852-5 1990 The preferential mu-receptor agonist [D-Ala2,N-methyl-Phe4,Gly-ol5]enkephalin also reduced [3H]acetylcholine release in all groups, but only at the high concentration of 10 micromols/l. Acetylcholine 95-108 proenkephalin Rattus norvegicus 67-77 2350675-0 1990 Enkephalin prevents CCK-induced enhancement of amphetamine-induced locomotor stereotypy. Amphetamine 47-58 proenkephalin Rattus norvegicus 0-10 2162234-3 1990 Intravenous administration of 300 nmol of Leu-Enk mimicked the effects observed following intrathecal administration. Leucine 42-45 proenkephalin Rattus norvegicus 46-49 2162234-4 1990 The hypertensive effect of intrathecal and intravenous Leu-Enk administration was blocked by prior systemic administration (10 mg/kg) of the nicotinic ganglion blocker hexamethonium, suggesting that the effect was mediated via sympathetic activation. Hexamethonium 168-181 proenkephalin Rattus norvegicus 59-62 1968961-1 1990 [3H]Dynorphin A(1-8) is readily metabolised by rat lumbosacral spinal cord tissue in vitro, affording a variety of products including a significant amount (20% recovered activity) of [3H][Leu5]enkephalin. Tritium 1-3 proenkephalin Rattus norvegicus 193-203 1968961-1 1990 [3H]Dynorphin A(1-8) is readily metabolised by rat lumbosacral spinal cord tissue in vitro, affording a variety of products including a significant amount (20% recovered activity) of [3H][Leu5]enkephalin. Tritium 184-186 proenkephalin Rattus norvegicus 193-203 1968961-2 1990 In the presence of the peptidase inhibitors bestatin, captopril, thiorphan, and leucyl-leucine, [3H][Leu5]enkephalin was the major metabolic product, accounting for 60% of recovered activity. Captopril 54-63 proenkephalin Rattus norvegicus 106-116 1968961-2 1990 In the presence of the peptidase inhibitors bestatin, captopril, thiorphan, and leucyl-leucine, [3H][Leu5]enkephalin was the major metabolic product, accounting for 60% of recovered activity. leucylleucine 80-94 proenkephalin Rattus norvegicus 106-116 2182020-0 1990 Cleavage of recombinant enkephalin precursor by endoproteolytic activity in bovine chromaffin granules. chromaffin 83-93 proenkephalin Rattus norvegicus 24-34 2182020-1 1990 To identify endoproteolytic activity that processes the enkephalin precursor, a novel approach was undertaken for the production of model substrate in the form of recombinant 35S-(Met)-preproenkephalin (35S-(Met)-PPE), generated by in vitro transcription and translation of the rat PPE cDNA. 35s-(met)-preproenkephalin 175-201 proenkephalin Rattus norvegicus 56-66 2158845-4 1990 There were high affinity binding sites for [3H]-[D-Ala2, MePhe4, Gly(ol)5]enkephalin (DAGOL), [3H]-U69593, and [3H]-ethylketocyclazocine (EKC) on spinal cord membranes from neonatal rats. Tritium 44-46 proenkephalin Rattus norvegicus 74-84 2158845-4 1990 There were high affinity binding sites for [3H]-[D-Ala2, MePhe4, Gly(ol)5]enkephalin (DAGOL), [3H]-U69593, and [3H]-ethylketocyclazocine (EKC) on spinal cord membranes from neonatal rats. mephe4 57-63 proenkephalin Rattus norvegicus 74-84 2158845-4 1990 There were high affinity binding sites for [3H]-[D-Ala2, MePhe4, Gly(ol)5]enkephalin (DAGOL), [3H]-U69593, and [3H]-ethylketocyclazocine (EKC) on spinal cord membranes from neonatal rats. Ethylketocyclazocine 116-136 proenkephalin Rattus norvegicus 74-84 2158845-4 1990 There were high affinity binding sites for [3H]-[D-Ala2, MePhe4, Gly(ol)5]enkephalin (DAGOL), [3H]-U69593, and [3H]-ethylketocyclazocine (EKC) on spinal cord membranes from neonatal rats. Ethylketocyclazocine 138-141 proenkephalin Rattus norvegicus 74-84 2312790-1 1990 By using both light and electron microscopic immunocytochemical methods, Met5-Enkephalin-Arg6-Gly7-Leu8 (MEAGL)-like immunoreactive structures were detected in the pelvic ganglion of male rats. arg6-gly7-leu8 89-103 proenkephalin Rattus norvegicus 78-88 2312790-1 1990 By using both light and electron microscopic immunocytochemical methods, Met5-Enkephalin-Arg6-Gly7-Leu8 (MEAGL)-like immunoreactive structures were detected in the pelvic ganglion of male rats. Tyr-gly-gly-phe-met-arg-gly-leu 105-110 proenkephalin Rattus norvegicus 78-88 1969475-4 1990 Dynorphin 1-17, 1-9, 1-8, 1-6, [Leu5]enkephalin, DPDPE and DSLET dose dependently stimulated the tone in the proximal, middle and distal colon with the maximum response at 10(-6) to 10(-5) M. The stimulation produced by Tyr-Gly-Gly-Phe and Tyr-Gly-Gly was 60 and 600 times less potent, respectively. tyrosyl-glycyl-glycine 220-231 proenkephalin Rattus norvegicus 37-47 2157527-2 1990 Both morphine (10(-3)-10(-5) M) and methionine-enkephalin (M-Enk; 10(-5) M) inhibited the enhanced [3H]noradrenaline [( 3H]NA) release evoked by high concentrations of K+ from synaptosomes and these inhibitory actions were antagonized by naloxone (10(-4), 10(-5) M). 3h]noradrenaline 100-116 proenkephalin Rattus norvegicus 61-64 2177189-1 1990 The effects of ethanol administration on binding characteristics of the highly selective mu and delta opioid receptor agonists 8H-[D-Ala2-MePhe4-Gly5-ol]enkephalin (3H-DAGO) and 3H-[D-Pen2, D-Pen5] enkephalin (3H-DPDPE), respectively, were investigated in the rat brain. Ethanol 15-22 proenkephalin Rattus norvegicus 153-163 2157527-2 1990 Both morphine (10(-3)-10(-5) M) and methionine-enkephalin (M-Enk; 10(-5) M) inhibited the enhanced [3H]noradrenaline [( 3H]NA) release evoked by high concentrations of K+ from synaptosomes and these inhibitory actions were antagonized by naloxone (10(-4), 10(-5) M). Tritium 100-102 proenkephalin Rattus norvegicus 61-64 2157527-2 1990 Both morphine (10(-3)-10(-5) M) and methionine-enkephalin (M-Enk; 10(-5) M) inhibited the enhanced [3H]noradrenaline [( 3H]NA) release evoked by high concentrations of K+ from synaptosomes and these inhibitory actions were antagonized by naloxone (10(-4), 10(-5) M). Naloxone 238-246 proenkephalin Rattus norvegicus 61-64 2157527-3 1990 Morphine (10(-3)-10(-5) M) and M-Enk (10(-5) M) stimulated the Na+,K(+)-ATPase activity in homogenates of synaptosomes but not of synaptic membranes in the incubation medium containing 2.2 X 10(-6)-4.7 X 10(-7) M free Ca2+ and these stimulatory effects were antagonized by naloxone. Naloxone 273-281 proenkephalin Rattus norvegicus 33-36 2157527-4 1990 In homogenates of synaptic membranes, the same concentrations of morphine and M-Enk stimulated the Na+,K(+)-ATPase activity suppressed by FeCl2 (5 X 10(-7) M) but not by CuCl2 nor ZnCl2, and these stimulatory effects were antagonized by naloxone. ferrous chloride 138-143 proenkephalin Rattus norvegicus 80-83 2157527-4 1990 In homogenates of synaptic membranes, the same concentrations of morphine and M-Enk stimulated the Na+,K(+)-ATPase activity suppressed by FeCl2 (5 X 10(-7) M) but not by CuCl2 nor ZnCl2, and these stimulatory effects were antagonized by naloxone. zinc chloride 180-185 proenkephalin Rattus norvegicus 80-83 2157527-4 1990 In homogenates of synaptic membranes, the same concentrations of morphine and M-Enk stimulated the Na+,K(+)-ATPase activity suppressed by FeCl2 (5 X 10(-7) M) but not by CuCl2 nor ZnCl2, and these stimulatory effects were antagonized by naloxone. Naloxone 237-245 proenkephalin Rattus norvegicus 80-83 2157527-6 1990 These results suggest that both morphine and M-Enk stimulate the suppressed Na+,K(+)-ATPase activity by interacting with Fe2+ at opioid receptor sites, and they may play a role in the suppression of membrane depolarization and/or the release of NA through their stimulatory action on the Na+,K(+)-ATPase activity probably suppressed by Fe2+ in the rat cerebral cortex. ammonium ferrous sulfate 121-125 proenkephalin Rattus norvegicus 47-50 2157527-6 1990 These results suggest that both morphine and M-Enk stimulate the suppressed Na+,K(+)-ATPase activity by interacting with Fe2+ at opioid receptor sites, and they may play a role in the suppression of membrane depolarization and/or the release of NA through their stimulatory action on the Na+,K(+)-ATPase activity probably suppressed by Fe2+ in the rat cerebral cortex. ammonium ferrous sulfate 336-340 proenkephalin Rattus norvegicus 47-50 1975082-3 1990 The other kappa-agonists Dynorphin-A (1-13) amide, and its protected analog D[Ala]2-dynorphin-A (1-13) amide also produced a significant increase in the formation of [3H]-IP"s, whereas the mu-selective agonists [D-Ala2-N-Me-Phe4-Gly5-ol]-enkephalin and morphine and the delta-selective agonist [D-Pen2,5]-enkephalin were ineffective. Amides 44-49 proenkephalin Rattus norvegicus 238-248 2299352-0 1990 Comparison of the soluble and membrane-bound forms of the puromycin-sensitive enkephalin-degrading aminopeptidases from rat. Puromycin 58-67 proenkephalin Rattus norvegicus 78-88 1982042-1 1990 Antiserum of methionine-enkephalin (Met-Enk) applied intrathecally abolished acupuncture analgesia (AA) caused by low frequency stimulation of an acupuncture point (tibial muscle, APS) of rats, but antisera of leucine-enkephalin (Leu-Enk) and dynorphin (Dyn) did not. Adenosine Phosphosulfate 180-183 proenkephalin Rattus norvegicus 40-43 1982042-4 1990 Potentials in the dorsal periaqueductal central gray (D-PAG) evoked by APS were antagonized by naloxone and antiserum of Met-Enk, and those in the lateral PAG (L-PAG) evoked by NAPS were antagonized by Mr2266 and antiserum of Dyn. d-pag 54-59 proenkephalin Rattus norvegicus 125-128 1982042-4 1990 Potentials in the dorsal periaqueductal central gray (D-PAG) evoked by APS were antagonized by naloxone and antiserum of Met-Enk, and those in the lateral PAG (L-PAG) evoked by NAPS were antagonized by Mr2266 and antiserum of Dyn. Adenosine Phosphosulfate 71-74 proenkephalin Rattus norvegicus 125-128 1982042-4 1990 Potentials in the dorsal periaqueductal central gray (D-PAG) evoked by APS were antagonized by naloxone and antiserum of Met-Enk, and those in the lateral PAG (L-PAG) evoked by NAPS were antagonized by Mr2266 and antiserum of Dyn. phenylacetylglycine 56-59 proenkephalin Rattus norvegicus 125-128 2154234-0 1990 Enkephalin-dopamine interactions in the central amygdalar nucleus during gastric stress ulcer formation in rats. Dopamine 11-19 proenkephalin Rattus norvegicus 0-10 1971555-9 1990 The fractions were assayed for the ability to stimulate corticosterone production in isolated rat adrenal decapsular (zona fasciculata, zona reticularis and medulla) cells, to displace D-ala2-D-leu5-(tyrosyl-3,5-3H) enkephalin from binding to rat brain membranes, and to inhibit 125I-human beta-endorphin from binding to its antibodies. d-ala2-d-leu5-(tyrosyl-3,5-3h) 185-215 proenkephalin Rattus norvegicus 216-226 1697808-10 1990 Using [3H]DHM, [3H]D-ala2-D-leu5-enkephalin [( 3H]DADL), and [3H]ethylketocyclazocine ([3H]EKC), we found that most of the transported vagal receptors have mu-pharmacology although kappa and delta receptors are present. Tritium 16-18 proenkephalin Rattus norvegicus 33-43 1697808-10 1990 Using [3H]DHM, [3H]D-ala2-D-leu5-enkephalin [( 3H]DADL), and [3H]ethylketocyclazocine ([3H]EKC), we found that most of the transported vagal receptors have mu-pharmacology although kappa and delta receptors are present. Tritium 16-18 proenkephalin Rattus norvegicus 33-43 1697808-10 1990 Using [3H]DHM, [3H]D-ala2-D-leu5-enkephalin [( 3H]DADL), and [3H]ethylketocyclazocine ([3H]EKC), we found that most of the transported vagal receptors have mu-pharmacology although kappa and delta receptors are present. Tritium 16-18 proenkephalin Rattus norvegicus 33-43 1697808-10 1990 Using [3H]DHM, [3H]D-ala2-D-leu5-enkephalin [( 3H]DADL), and [3H]ethylketocyclazocine ([3H]EKC), we found that most of the transported vagal receptors have mu-pharmacology although kappa and delta receptors are present. Tritium 16-18 proenkephalin Rattus norvegicus 33-43 1969854-2 1990 Replacement of the enkephalin moiety of dynorphin with the dermorphin or dermorphin1-5 sequences caused a remarkable increase in analgesic potency, and a 3-6 fold increase in potency of binding against [3H]-dihydromorphine. Tritium 203-206 proenkephalin Rattus norvegicus 19-29 1969854-2 1990 Replacement of the enkephalin moiety of dynorphin with the dermorphin or dermorphin1-5 sequences caused a remarkable increase in analgesic potency, and a 3-6 fold increase in potency of binding against [3H]-dihydromorphine. Dihydromorphine 207-222 proenkephalin Rattus norvegicus 19-29 2405705-4 1990 Degradation of [Tyr1-3H][Leu5]enkephalin was studied in the gastric submucosa of anesthetized and conscious rats in vivo by using a catheter to deliver peptide to tissues and implanted dialysis fibers to collect the metabolites. tyr1-3h 16-23 proenkephalin Rattus norvegicus 30-40 2405705-6 1990 [Leu5]- and [Tyr1-3H][Leu5]enkephalin were metabolized by membranes and in the stomach wall by hydrolysis of the Tyr1-Gly2 bond. tyr1-3h 13-20 proenkephalin Rattus norvegicus 27-37 2405705-6 1990 [Leu5]- and [Tyr1-3H][Leu5]enkephalin were metabolized by membranes and in the stomach wall by hydrolysis of the Tyr1-Gly2 bond. Glycylglycine 118-122 proenkephalin Rattus norvegicus 27-37 2405705-9 1990 Metabolism of the aminopeptidase-resistant analogue [D-Ala2][Leu5]enkephalin by membranes was unaffected by amastatin and weakly inhibited by phosphoramidon affected by amastatin and weakly inhibited by phosphoramidon and captopril. phosphoramidon 142-156 proenkephalin Rattus norvegicus 66-76 2405705-9 1990 Metabolism of the aminopeptidase-resistant analogue [D-Ala2][Leu5]enkephalin by membranes was unaffected by amastatin and weakly inhibited by phosphoramidon affected by amastatin and weakly inhibited by phosphoramidon and captopril. amastatin 169-178 proenkephalin Rattus norvegicus 66-76 2405705-9 1990 Metabolism of the aminopeptidase-resistant analogue [D-Ala2][Leu5]enkephalin by membranes was unaffected by amastatin and weakly inhibited by phosphoramidon affected by amastatin and weakly inhibited by phosphoramidon and captopril. phosphoramidon 203-217 proenkephalin Rattus norvegicus 66-76 2405705-9 1990 Metabolism of the aminopeptidase-resistant analogue [D-Ala2][Leu5]enkephalin by membranes was unaffected by amastatin and weakly inhibited by phosphoramidon affected by amastatin and weakly inhibited by phosphoramidon and captopril. Captopril 222-231 proenkephalin Rattus norvegicus 66-76 2097989-3 1990 In the presence of 5 mM glucose the preproinsulin mRNA content was increased by 10(-8) M Met-enkephalin to 198% (p less than 0.001) and by Leu-enkephalin to 145% (p less than 0.001) of the control without enkephalins. Glucose 24-31 proenkephalin Rattus norvegicus 93-103 2097989-3 1990 In the presence of 5 mM glucose the preproinsulin mRNA content was increased by 10(-8) M Met-enkephalin to 198% (p less than 0.001) and by Leu-enkephalin to 145% (p less than 0.001) of the control without enkephalins. Glucose 24-31 proenkephalin Rattus norvegicus 143-153 2097989-6 1990 The biosynthesis of (pro)insulin was strongly decreased by actinomycin D at the glucose and enkephalin concentrations tested. Dactinomycin 59-72 proenkephalin Rattus norvegicus 92-102 2159852-1 1990 Digitonin-solubilized opioid receptors from rat brain were purified with an affinity resin, AH-Sepharose coupled with [D-Ala2, D-Leu5]enkephalin (DADLE). Digitonin 0-9 proenkephalin Rattus norvegicus 134-144 2176265-1 1990 The present study demonstrates that pretreatment of rat brain membranes with (+)-cis-3-methylfentanyl [(+)-cis-MF], followed by extensive washing of the membranes, produces a wash-resistant decrease in the binding of [3H]-[D-ala2,D-leu5]enkephalin to the d binding site of the opioid receptor complex (delta cx binding site). 3-methylfentanyl 77-101 proenkephalin Rattus norvegicus 237-247 2250556-1 1990 The spinal antinociceptive interaction between the opiate receptor subtype agonists morphine (mu), U69593 (kappa) and [D-Pen2,5]-enkephalin (DPDPE; delta) with clonidine (alpha 2 adrenergic) was examined. Clonidine 160-169 proenkephalin Rattus norvegicus 129-139 1975082-3 1990 The other kappa-agonists Dynorphin-A (1-13) amide, and its protected analog D[Ala]2-dynorphin-A (1-13) amide also produced a significant increase in the formation of [3H]-IP"s, whereas the mu-selective agonists [D-Ala2-N-Me-Phe4-Gly5-ol]-enkephalin and morphine and the delta-selective agonist [D-Pen2,5]-enkephalin were ineffective. Amides 44-49 proenkephalin Rattus norvegicus 305-315 1975082-3 1990 The other kappa-agonists Dynorphin-A (1-13) amide, and its protected analog D[Ala]2-dynorphin-A (1-13) amide also produced a significant increase in the formation of [3H]-IP"s, whereas the mu-selective agonists [D-Ala2-N-Me-Phe4-Gly5-ol]-enkephalin and morphine and the delta-selective agonist [D-Pen2,5]-enkephalin were ineffective. 3h]-ip"s 167-175 proenkephalin Rattus norvegicus 238-248 1975082-3 1990 The other kappa-agonists Dynorphin-A (1-13) amide, and its protected analog D[Ala]2-dynorphin-A (1-13) amide also produced a significant increase in the formation of [3H]-IP"s, whereas the mu-selective agonists [D-Ala2-N-Me-Phe4-Gly5-ol]-enkephalin and morphine and the delta-selective agonist [D-Pen2,5]-enkephalin were ineffective. 3h]-ip"s 167-175 proenkephalin Rattus norvegicus 305-315 2325661-7 1990 Proenkephalin mRNA levels in the epididymis correlate with the decline and reappearance of spermatozoa induced by the alkylating agent busulphan. Busulfan 135-144 proenkephalin Rattus norvegicus 0-13 1688995-7 1990 The mu-selective peptide [D-Ala2, (Me)Phe4,Gly(ol)5]enkephalin was the peptide that afforded the greatest protection. (me)phe4 34-42 proenkephalin Rattus norvegicus 52-62 2359494-6 1990 Treatments that increase the levels of cAMP, the cyclic nucleotide associated with nicotinic receptor activation, prevented the rise in medullary enkephalin relative to control explants. Cyclic AMP 39-43 proenkephalin Rattus norvegicus 146-156 1875991-1 1990 A testis cDNA library derived from 4-6 week-old rats was screened using a 32P-labeled 435 base pair (bp) cDNA probe derived from exon 3 of rat brain proenkephalin (PE). Phosphorus-32 74-77 proenkephalin Rattus norvegicus 149-162 1875991-1 1990 A testis cDNA library derived from 4-6 week-old rats was screened using a 32P-labeled 435 base pair (bp) cDNA probe derived from exon 3 of rat brain proenkephalin (PE). Phosphorus-32 74-77 proenkephalin Rattus norvegicus 164-166 2263320-3 1990 This effect of [Met]enkephalin could be blocked by naloxone. Naloxone 51-59 proenkephalin Rattus norvegicus 20-30 2263320-5 1990 In 59% of cells, pressure application of [Met]enkephalin caused a dose-dependent inhibition that could be blocked by naloxone; 15% of the cells were excited and the remaining neurons (26%) did not respond. Naloxone 117-125 proenkephalin Rattus norvegicus 46-56 2263320-8 1990 However, perfusion with physiological saline solution/Mg abolished the excitatory response to [Met]enkephalin in four cells. Sodium Chloride 38-44 proenkephalin Rattus norvegicus 99-109 2296581-8 1990 These results indicate that in the striatum, the enkephalin neurons are direct targets for dopamine liberated from mesostriatal neurons. Dopamine 91-99 proenkephalin Rattus norvegicus 49-59 2309044-4 1990 Intratesticular administration of naloxone prior to enkephalin treatment prevented the decrease in basal testosterone production induced by the opioid agonist. Testosterone 105-117 proenkephalin Rattus norvegicus 52-62 2359494-6 1990 Treatments that increase the levels of cAMP, the cyclic nucleotide associated with nicotinic receptor activation, prevented the rise in medullary enkephalin relative to control explants. Nucleotides, Cyclic 49-66 proenkephalin Rattus norvegicus 146-156 2359494-8 1990 However, in the presence of both forskolin (10 microM) plus db-cGMP (5 mM), enkephalin content rose three-fold over control explants. Colforsin 33-42 proenkephalin Rattus norvegicus 76-86 2359494-8 1990 However, in the presence of both forskolin (10 microM) plus db-cGMP (5 mM), enkephalin content rose three-fold over control explants. Guanosine, N-(1-oxobutyl)-, cyclic 3',5'-(hydrogen phosphate) 2'-butanoate, monosodium salt 60-67 proenkephalin Rattus norvegicus 76-86 2359494-9 1990 These data suggest that, distinct from catecholamine pathways, enkephalin levels can be positively or negatively regulated by the severity of a stressful stimulus, by cholinergic receptor mechanisms and by an interaction of cyclic nucleotide second-messenger pathways. Nucleotides, Cyclic 224-241 proenkephalin Rattus norvegicus 63-73 31421706-6 2019 Prenatal ethanol exposure (PEE) selectively modifies Methionine-enkephalin (Met-enk) content in several brain regions of infant and adolescent rats, particularly those of the reward circuits. Ethanol 9-16 proenkephalin Rattus norvegicus 64-67 1703464-5 1990 (3) Icv injection of met-enkephalin (MEK) or morphine could increase the Ir-SP levels in hypothalamus, striatum and the pain threshold, and above-mentioned effect of morphine could be prevented by the opioid receptor antagonist naloxone. Morphine 166-174 proenkephalin Rattus norvegicus 25-35 1703464-5 1990 (3) Icv injection of met-enkephalin (MEK) or morphine could increase the Ir-SP levels in hypothalamus, striatum and the pain threshold, and above-mentioned effect of morphine could be prevented by the opioid receptor antagonist naloxone. Naloxone 228-236 proenkephalin Rattus norvegicus 25-35 2125862-9 1990 The SP-LI, ENK-LI and FRAP were all weakened in dorsal horn of spinal cord 1h after capsaicin treatment. Hydrogen 75-77 proenkephalin Rattus norvegicus 11-14 2125862-9 1990 The SP-LI, ENK-LI and FRAP were all weakened in dorsal horn of spinal cord 1h after capsaicin treatment. Capsaicin 84-93 proenkephalin Rattus norvegicus 11-14 2125862-11 1990 The foregoing results indicated that the metabolism and function of C fibers of primary afferent especially the SP containing nerve and those of ENK-containing neurons could be influenced by the extradural injection of capsaicin. Capsaicin 219-228 proenkephalin Rattus norvegicus 145-148 31421706-7 2019 In preweanling rats, Met-enk content is decreased in the ventral tegmental area but is increased in the prefrontal cortex and the nucleus accumbens and other brain areas, as a consequence of a short and moderate ethanol exposure during late gestation. Ethanol 212-219 proenkephalin Rattus norvegicus 25-28 16023221-2 2005 Morphine, (D-Phe2, D-Pen5)-enkephalin (DPDPE), dexmedetomidine, clonidine and xylazine showed concentration-related inhibition of slow VRP. Morphine 0-8 proenkephalin Rattus norvegicus 27-37 34539332-9 2021 Moreover, in primary cultured rat dorsal root ganglion (DRG) neurons, curcumin significantly up-regulated the expression of proopiomelanocortin (Pomc) and promoted the release of beta-endorphin and enkephalin. Curcumin 70-78 proenkephalin Rattus norvegicus 198-208 34539332-10 2021 Furthermore, pretreatment with the antiserum of beta-endorphin or enkephalin markedly attenuated curcumin-induced analgesia in cancer-induced bone pain. Curcumin 97-105 proenkephalin Rattus norvegicus 66-76 34539332-12 2021 The results also suggested that stimulation of expression of DRG neurons beta-endorphin and enkephalin mediates the antinociceptive effect of curcumin in pain hypersensitivity conditions. Curcumin 142-150 proenkephalin Rattus norvegicus 92-102