Title : Amitriptyline preserves morphine's antinociceptive effect by regulating the glutamate transporter GLAST and GLT-1 trafficking and excitatory amino acids concentration in morphine-tolerant rats.

Pub. Date : 2007 Jun

PMID : 17346885






7 Functional Relationships(s)
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1 Furthermore, long-term morphine infusion up-regulated PKA and PKC protein expression in the spinal cord dorsal horn, while amitriptyline inhibited the increase in expression of phospho-PKA, PKCalpha, PKCbetaII, and PKCgamma. Morphine protein kinase C, gamma Rattus norvegicus
2 Furthermore, long-term morphine infusion up-regulated PKA and PKC protein expression in the spinal cord dorsal horn, while amitriptyline inhibited the increase in expression of phospho-PKA, PKCalpha, PKCbetaII, and PKCgamma. Morphine protein kinase C, gamma Rattus norvegicus
3 In morphine-tolerant rats, acute treatment with PKA inhibitor H89 and PKC inhibitor Go6805 attenuated morphine tolerance and the morphine-induced CSF glutamate and aspartate elevation, and induced trafficking of GLAST and GLT-1 from cytosol onto the cell surface. Morphine protein kinase C, gamma Rattus norvegicus
4 In morphine-tolerant rats, acute treatment with PKA inhibitor H89 and PKC inhibitor Go6805 attenuated morphine tolerance and the morphine-induced CSF glutamate and aspartate elevation, and induced trafficking of GLAST and GLT-1 from cytosol onto the cell surface. Morphine protein kinase C, gamma Rattus norvegicus
5 In morphine-tolerant rats, acute treatment with PKA inhibitor H89 and PKC inhibitor Go6805 attenuated morphine tolerance and the morphine-induced CSF glutamate and aspartate elevation, and induced trafficking of GLAST and GLT-1 from cytosol onto the cell surface. Morphine protein kinase C, gamma Rattus norvegicus
6 These results show that acute amitriptyline treatment preserved morphine"s antinociceptive effect in morphine-tolerant rats; the mechanisms may be involved in inhibition of phospho-PKA and PKC expression, and thus inducing the GLAST and GLT-1 trafficking onto glial cell surface which enhances the EAA uptake from the synaptic cleft and reduces EAA concentration in the spinal CSF. Morphine protein kinase C, gamma Rattus norvegicus
7 These results show that acute amitriptyline treatment preserved morphine"s antinociceptive effect in morphine-tolerant rats; the mechanisms may be involved in inhibition of phospho-PKA and PKC expression, and thus inducing the GLAST and GLT-1 trafficking onto glial cell surface which enhances the EAA uptake from the synaptic cleft and reduces EAA concentration in the spinal CSF. Morphine protein kinase C, gamma Rattus norvegicus