PMID-sentid Pub_year Sent_text comp_official_name comp_offset protein_name organism prot_offset 10681414-2 2000 Bile acid pool sizes, fecal bile acid outputs (synthesis rates), and the activities of cholesterol 7alpha-hydroxylase (classic bile acid synthesis) and cholesterol 27-hydroxylase (alternative bile acid synthesis) were related to ileal bile acid transporter expression (ileal apical sodium-dependent bile acid transporter, ASBT). Bile Acids and Salts 127-136 cytochrome P450 7A1 Oryctolagus cuniculus 87-117 10681414-9 2000 Classic bile acid synthesis (cholesterol 7alpha-hydroxylase) was inhibited in rabbits because an enlarged bile acid pool developed from enhanced ileal bile acid transport. Bile Acids and Salts 8-17 cytochrome P450 7A1 Oryctolagus cuniculus 29-59 10681414-9 2000 Classic bile acid synthesis (cholesterol 7alpha-hydroxylase) was inhibited in rabbits because an enlarged bile acid pool developed from enhanced ileal bile acid transport. Bile Acids and Salts 106-115 cytochrome P450 7A1 Oryctolagus cuniculus 29-59 10681414-9 2000 Classic bile acid synthesis (cholesterol 7alpha-hydroxylase) was inhibited in rabbits because an enlarged bile acid pool developed from enhanced ileal bile acid transport. Bile Acids and Salts 106-115 cytochrome P450 7A1 Oryctolagus cuniculus 29-59 10681414-11 2000 Therefore, although bile acid synthesis was increased via different pathways in rats and rabbits, enhanced ileal bile acid transport was critical for enlarging the bile acid pool size that exerted feedback regulation on cholesterol 7alpha-hydroxylase in rabbits. Bile Acids and Salts 113-122 cytochrome P450 7A1 Oryctolagus cuniculus 220-250 10681414-11 2000 Therefore, although bile acid synthesis was increased via different pathways in rats and rabbits, enhanced ileal bile acid transport was critical for enlarging the bile acid pool size that exerted feedback regulation on cholesterol 7alpha-hydroxylase in rabbits. Bile Acids and Salts 113-122 cytochrome P450 7A1 Oryctolagus cuniculus 220-250 9394736-4 1997 The activities of hepatic cholesterol 7 alpha-hydroxylase and sterol 27-hydroxylase that control bile acid synthesis in classic and alternative pathways were related to the size and composition of bile acid pool. Bile Acids and Salts 197-206 cytochrome P450 7A1 Oryctolagus cuniculus 26-57 10681414-2 2000 Bile acid pool sizes, fecal bile acid outputs (synthesis rates), and the activities of cholesterol 7alpha-hydroxylase (classic bile acid synthesis) and cholesterol 27-hydroxylase (alternative bile acid synthesis) were related to ileal bile acid transporter expression (ileal apical sodium-dependent bile acid transporter, ASBT). Bile Acids and Salts 127-136 cytochrome P450 7A1 Oryctolagus cuniculus 87-117 10681414-2 2000 Bile acid pool sizes, fecal bile acid outputs (synthesis rates), and the activities of cholesterol 7alpha-hydroxylase (classic bile acid synthesis) and cholesterol 27-hydroxylase (alternative bile acid synthesis) were related to ileal bile acid transporter expression (ileal apical sodium-dependent bile acid transporter, ASBT). Bile Acids and Salts 127-136 cytochrome P450 7A1 Oryctolagus cuniculus 87-117 9653895-4 1998 Only bezafibrate induced a significant 57% reduction in the activity of hepatic microsomal cholesterol 7alpha-hydroxylase. Bezafibrate 5-16 cytochrome P450 7A1 Oryctolagus cuniculus 91-121 9884338-2 1999 Feeding cholesterol for one day increased hepatic cholesterol 75% and cholesterol 7alpha-hydroxylase activity 1.6 times without significant change of bile acid pool size or sterol 27-hydroxylase activity. Cholesterol 8-19 cytochrome P450 7A1 Oryctolagus cuniculus 70-100 9884338-5 1999 Bile drainage depleted the bile acid pool and stimulated downregulated cholesterol 7alpha-hydroxylase activity but did not affect sterol 27-hydroxylase activity. bile drainage 0-13 cytochrome P450 7A1 Oryctolagus cuniculus 71-101 9884338-6 1999 Thus, increasing hepatic cholesterol does not directly inhibit cholesterol 7alpha-hydroxylase and initially favors enzyme induction, whereas increased bile acid pool is the most powerful inhibitor of cholesterol 7alpha-hydroxylase. Bile Acids and Salts 151-160 cytochrome P450 7A1 Oryctolagus cuniculus 200-230 9717721-9 1998 These results demonstrated that dietary cholesterol increased hepatic sterol 27-hydroxylase activity and alternative bile acid synthesis to expand the bile acid pool and inhibited cholesterol 7alpha-hydroxylase in NZW and in Watanabe heterozygous rabbits but not in homozygotes with absent hepatic LDL receptor function. Cholesterol 40-51 cytochrome P450 7A1 Oryctolagus cuniculus 180-210 9717721-10 1998 Thus, in rabbits, sterol 27-hydroxylase is up-regulated by the increased hepatic cholesterol that enters the liver via LDL receptors whereas cholesterol 7alpha-hydroxylase is controlled by the circulating hepatic bile acid flux. Bile Acids and Salts 213-222 cytochrome P450 7A1 Oryctolagus cuniculus 141-171 9394736-0 1997 Increased bile acid pool inhibits cholesterol 7 alpha-hydroxylase in cholesterol-fed rabbits. Bile Acids and Salts 10-19 cytochrome P450 7A1 Oryctolagus cuniculus 34-65 9394736-1 1997 BACKGROUND & AIMS: Cholesterol feeding unexpectedly inhibits cholesterol 7 alpha-hydroxylase in rabbits. Cholesterol 23-34 cytochrome P450 7A1 Oryctolagus cuniculus 65-96 9394736-4 1997 The activities of hepatic cholesterol 7 alpha-hydroxylase and sterol 27-hydroxylase that control bile acid synthesis in classic and alternative pathways were related to the size and composition of bile acid pool. Bile Acids and Salts 97-106 cytochrome P450 7A1 Oryctolagus cuniculus 26-57 9394736-5 1997 RESULTS: After feeding cholesterol, plasma and hepatic cholesterol concentrations increased, the bile acid pool doubled (from 254 +/- 44 to 533 +/- 51 mg; P < 0.001), cholesterol 7 alpha-hydroxylase activity decreased 68% (P < 0.01), but sterol 27-hydroxylase activity increased 66% (P < 0.05) with increased cholic acid synthesis (P < 0.01). Cholesterol 23-34 cytochrome P450 7A1 Oryctolagus cuniculus 170-201 9394736-5 1997 RESULTS: After feeding cholesterol, plasma and hepatic cholesterol concentrations increased, the bile acid pool doubled (from 254 +/- 44 to 533 +/- 51 mg; P < 0.001), cholesterol 7 alpha-hydroxylase activity decreased 68% (P < 0.01), but sterol 27-hydroxylase activity increased 66% (P < 0.05) with increased cholic acid synthesis (P < 0.01). Bile Acids and Salts 97-106 cytochrome P450 7A1 Oryctolagus cuniculus 170-201 9394736-6 1997 Bile drainage in the cholesterol-fed rabbits depleted the bile acid pool and stimulated down-regulated cholesterol 7 alpha-hydroxylase activity 11.4-fold (P < 0.001), although hepatic cholesterol remained elevated. Cholesterol 21-32 cytochrome P450 7A1 Oryctolagus cuniculus 103-134 9394736-8 1997 CONCLUSIONS: Feeding cholesterol increased hepatic cholesterol and stimulated sterol 27-hydroxylase and alternative bile acid synthesis, which expanded the bile acid pool and inhibited cholesterol 7 alpha-hydroxylase in rabbits. Cholesterol 21-32 cytochrome P450 7A1 Oryctolagus cuniculus 185-216 7488206-0 1995 Different effects on the expression of CYP7 and CYP27 in rabbit liver by cholic acid and cholestyramine. Cholic Acid 73-84 cytochrome P450 7A1 Oryctolagus cuniculus 39-43 8855192-7 1996 Replacement with exogenous glycodeoxycholic acid increased plasma cholesterol concentrations 1.7 times in NZW rabbits and decreased enhanced cholesterol 7alpha-hydroxylase activity 54%, mRNA levels 86%, cholic acid synthesis 38%, and hepatic LDL receptor-mediated binding 57% in NZW rabbits. Glycodeoxycholic Acid 27-48 cytochrome P450 7A1 Oryctolagus cuniculus 141-171 8855192-7 1996 Replacement with exogenous glycodeoxycholic acid increased plasma cholesterol concentrations 1.7 times in NZW rabbits and decreased enhanced cholesterol 7alpha-hydroxylase activity 54%, mRNA levels 86%, cholic acid synthesis 38%, and hepatic LDL receptor-mediated binding 57% in NZW rabbits. Cholic Acid 37-48 cytochrome P450 7A1 Oryctolagus cuniculus 141-171 8855192-8 1996 Bile acid depletion stimulated cholic acid synthesis by up-regulating cholesterol 7alpha-hydroxylase to use cholesterol and reduce plasma concentrations substantially in both NZW and WHHL rabbits, although LDL receptors did not function in WHHL rabbits. Bile Acids and Salts 0-9 cytochrome P450 7A1 Oryctolagus cuniculus 70-100 8855192-8 1996 Bile acid depletion stimulated cholic acid synthesis by up-regulating cholesterol 7alpha-hydroxylase to use cholesterol and reduce plasma concentrations substantially in both NZW and WHHL rabbits, although LDL receptors did not function in WHHL rabbits. Cholic Acid 31-42 cytochrome P450 7A1 Oryctolagus cuniculus 70-100 8855192-9 1996 Glycodeoxycholic acid replacement inhibited elevated cholesterol 7alpha-hydroxylase, cholic acid synthesis, and hepatic LDL receptor binding to reestablish baseline plasma cholesterol levels in NZW rabbits. Glycodeoxycholic Acid 0-21 cytochrome P450 7A1 Oryctolagus cuniculus 53-83 8855192-9 1996 Glycodeoxycholic acid replacement inhibited elevated cholesterol 7alpha-hydroxylase, cholic acid synthesis, and hepatic LDL receptor binding to reestablish baseline plasma cholesterol levels in NZW rabbits. Cholic Acid 10-21 cytochrome P450 7A1 Oryctolagus cuniculus 53-83 8855192-11 1996 Plasma cholesterol concentrations were reduced significantly when cholesterol 7alpha-hydroxylase was stimulated even in the absence of LDL receptor function. Cholesterol 7-18 cytochrome P450 7A1 Oryctolagus cuniculus 66-96 7488206-0 1995 Different effects on the expression of CYP7 and CYP27 in rabbit liver by cholic acid and cholestyramine. Cholestyramine Resin 89-103 cytochrome P450 7A1 Oryctolagus cuniculus 39-43 7488206-6 1995 Treatments of rabbits with cholic acid or cholestyramine resulted in marked suppression and induction, respectively, of CYP7 mRNA. Cholic Acid 27-38 cytochrome P450 7A1 Oryctolagus cuniculus 120-124 7488206-6 1995 Treatments of rabbits with cholic acid or cholestyramine resulted in marked suppression and induction, respectively, of CYP7 mRNA. Cholestyramine Resin 42-56 cytochrome P450 7A1 Oryctolagus cuniculus 120-124 7492622-5 1995 Combined administration of fluvastatin (50 mg/kg per day) and cholestyramine, a bile acid sequestrant resin, at a level of 2% of the diet for 4 weeks more profoundly decreased plasma total, VLDL- and LDL-cholesterol levels with induction of hepatic cholesterol 7 alpha-hydroxylase and no further induction of the hepatic LDL receptor. Fluvastatin 27-38 cytochrome P450 7A1 Oryctolagus cuniculus 249-280 7492622-5 1995 Combined administration of fluvastatin (50 mg/kg per day) and cholestyramine, a bile acid sequestrant resin, at a level of 2% of the diet for 4 weeks more profoundly decreased plasma total, VLDL- and LDL-cholesterol levels with induction of hepatic cholesterol 7 alpha-hydroxylase and no further induction of the hepatic LDL receptor. Cholestyramine Resin 62-76 cytochrome P450 7A1 Oryctolagus cuniculus 249-280 7492622-8 1995 Additional effect of cholestyramine on decrease in plasma cholesterol levels seems to be due to the further decrease in hepatic cholesterol secretion by up-regulation of hepatic cholesterol 7 alpha-hydroxylase. Cholestyramine Resin 21-35 cytochrome P450 7A1 Oryctolagus cuniculus 178-209 7492622-8 1995 Additional effect of cholestyramine on decrease in plasma cholesterol levels seems to be due to the further decrease in hepatic cholesterol secretion by up-regulation of hepatic cholesterol 7 alpha-hydroxylase. Cholesterol 128-139 cytochrome P450 7A1 Oryctolagus cuniculus 178-209 8405866-9 1993 (2) GDCA decreased mRNA levels of HMG-CoA reductase and cholesterol 7 alpha-hydroxylase in males, but mRNA levels did not decrease in females. Glycodeoxycholic Acid 4-8 cytochrome P450 7A1 Oryctolagus cuniculus 56-87 7544128-2 1995 An anti-peptide antibody targeted to the C-terminus of CYP7 was produced by immunising rabbits with the synthetic peptide Tyr-Lys-Leu-Lys-His. Tyrosine 122-125 cytochrome P450 7A1 Oryctolagus cuniculus 55-59 7544128-2 1995 An anti-peptide antibody targeted to the C-terminus of CYP7 was produced by immunising rabbits with the synthetic peptide Tyr-Lys-Leu-Lys-His. Lysine 126-129 cytochrome P450 7A1 Oryctolagus cuniculus 55-59 7544128-2 1995 An anti-peptide antibody targeted to the C-terminus of CYP7 was produced by immunising rabbits with the synthetic peptide Tyr-Lys-Leu-Lys-His. Leucine 130-133 cytochrome P450 7A1 Oryctolagus cuniculus 55-59 7544128-2 1995 An anti-peptide antibody targeted to the C-terminus of CYP7 was produced by immunising rabbits with the synthetic peptide Tyr-Lys-Leu-Lys-His. Lysine 134-137 cytochrome P450 7A1 Oryctolagus cuniculus 55-59 7544128-2 1995 An anti-peptide antibody targeted to the C-terminus of CYP7 was produced by immunising rabbits with the synthetic peptide Tyr-Lys-Leu-Lys-His. Histidine 138-141 cytochrome P450 7A1 Oryctolagus cuniculus 55-59 7751825-1 1995 Cholesterol 7 alpha-hydroxylase, the key enzyme in a series of metabolic changes for the production of bile acids from cholesterol, shows circadian rhythms. Bile Acids and Salts 103-113 cytochrome P450 7A1 Oryctolagus cuniculus 0-31 7751825-1 1995 Cholesterol 7 alpha-hydroxylase, the key enzyme in a series of metabolic changes for the production of bile acids from cholesterol, shows circadian rhythms. Cholesterol 119-130 cytochrome P450 7A1 Oryctolagus cuniculus 0-31 7751825-3 1995 Because the rabbit is a good animal model for the study of human cholesterol-bile acid metabolism, in the present study we isolated a complete cDNA encoding rabbit cholesterol 7 alpha-hydroxylase (3022 base pairs (bp) long and 1503 bp open-reading frame encoding 501 amino acid residues). Cholesterol 65-76 cytochrome P450 7A1 Oryctolagus cuniculus 164-195 7751825-3 1995 Because the rabbit is a good animal model for the study of human cholesterol-bile acid metabolism, in the present study we isolated a complete cDNA encoding rabbit cholesterol 7 alpha-hydroxylase (3022 base pairs (bp) long and 1503 bp open-reading frame encoding 501 amino acid residues). Bile Acids and Salts 77-86 cytochrome P450 7A1 Oryctolagus cuniculus 164-195 7706454-10 1995 Feeding cholesterol to NZW rabbits increased plasma and hepatic concentrations greatly, inhibited LDL receptor-mediated binding, and unexpectedly suppressed cholesterol 7 alpha-hydroxylase activity and mRNA to minimum levels similar to WHHL rabbits. Cholesterol 8-19 cytochrome P450 7A1 Oryctolagus cuniculus 157-188 8405866-10 1993 (3) Bile acid synthesis was sustained in females because continued biosynthesis of cholesterol provided a substrate for cholesterol 7 alpha-hydroxylase and stimulus for enzyme formation. Bile Acids and Salts 4-13 cytochrome P450 7A1 Oryctolagus cuniculus 120-151 8405866-10 1993 (3) Bile acid synthesis was sustained in females because continued biosynthesis of cholesterol provided a substrate for cholesterol 7 alpha-hydroxylase and stimulus for enzyme formation. Cholesterol 83-94 cytochrome P450 7A1 Oryctolagus cuniculus 120-151 8245718-9 1993 The difference in bile acid excretion was also manifest by a higher than normal level of cholesterol 7 alpha-hydroxylase activity and cholesterol 7 alpha-hydroxylase mRNA in the livers from resistant versus normal rabbits. Bile Acids and Salts 18-27 cytochrome P450 7A1 Oryctolagus cuniculus 89-120 8245718-9 1993 The difference in bile acid excretion was also manifest by a higher than normal level of cholesterol 7 alpha-hydroxylase activity and cholesterol 7 alpha-hydroxylase mRNA in the livers from resistant versus normal rabbits. Bile Acids and Salts 18-27 cytochrome P450 7A1 Oryctolagus cuniculus 134-165 8245718-10 1993 As cholesterol 7 alpha-hydroxylase is the putative rate-limiting step of bile acid synthesis, we believe that the increased excretion of bile acids by resistant animals is due, at least in part, to increased levels of cholesterol 7 alpha-hydroxylase expression. Bile Acids and Salts 73-82 cytochrome P450 7A1 Oryctolagus cuniculus 3-34 8245718-10 1993 As cholesterol 7 alpha-hydroxylase is the putative rate-limiting step of bile acid synthesis, we believe that the increased excretion of bile acids by resistant animals is due, at least in part, to increased levels of cholesterol 7 alpha-hydroxylase expression. Bile Acids and Salts 73-82 cytochrome P450 7A1 Oryctolagus cuniculus 218-249 8245718-10 1993 As cholesterol 7 alpha-hydroxylase is the putative rate-limiting step of bile acid synthesis, we believe that the increased excretion of bile acids by resistant animals is due, at least in part, to increased levels of cholesterol 7 alpha-hydroxylase expression. Bile Acids and Salts 137-147 cytochrome P450 7A1 Oryctolagus cuniculus 3-34 8245718-10 1993 As cholesterol 7 alpha-hydroxylase is the putative rate-limiting step of bile acid synthesis, we believe that the increased excretion of bile acids by resistant animals is due, at least in part, to increased levels of cholesterol 7 alpha-hydroxylase expression. Bile Acids and Salts 137-147 cytochrome P450 7A1 Oryctolagus cuniculus 218-249 1568582-5 1992 Hepatic bile acid depletion increased hydroxymethyglutary coenzyme A (HMG-CoA) reductase activity fourfold and cholesterol 7 alpha-hydroxylase activity threefold, which were reduced 48% and 51%, respectively, from their maximum levels during replacement with glycocholic acid. Bile Acids and Salts 8-17 cytochrome P450 7A1 Oryctolagus cuniculus 111-142 1568582-6 1992 Glycodeoxycholic acid infusion depressed cholesterol 7 alpha-hydroxylase activity by 59% without reducing HMG-CoA reductase activity significantly. Glycodeoxycholic Acid 0-21 cytochrome P450 7A1 Oryctolagus cuniculus 41-72 1568582-10 1992 Glycocholic acid inhibits both HMG-CoA reductase and cholesterol 7 alpha-hydroxylase while glycodeoxycholic acid affects primarily cholesterol 7 alpha-hydroxylase. Glycocholic Acid 0-16 cytochrome P450 7A1 Oryctolagus cuniculus 53-84 1568582-10 1992 Glycocholic acid inhibits both HMG-CoA reductase and cholesterol 7 alpha-hydroxylase while glycodeoxycholic acid affects primarily cholesterol 7 alpha-hydroxylase. Glycodeoxycholic Acid 91-112 cytochrome P450 7A1 Oryctolagus cuniculus 131-162 3719008-8 1986 40% and increased the activity of cholesterol 7 alpha-hydroxylase 2-fold in the cholesterol-fed rabbit compared to cholesterol-fed controls. Cholesterol 80-91 cytochrome P450 7A1 Oryctolagus cuniculus 34-65 1884884-1 1991 Serum lipoproteins and key hepatic and intestinal enzymes regulating cholesterol synthesis, esterification and catabolism, namely 3-hydroxy-3-methylglutaryl coenzyme A (HMGCoA) reductase, acyl coenzyme A: cholesterol-o-acyltransferase (ACAT) and cholesterol 7 alpha-hydroxylase respectively, were compared in two hypercholesterolaemic rabbit models - the cholesterol-fed animal and the hypercholesterolaemic diabetic animal. Cholesterol 69-80 cytochrome P450 7A1 Oryctolagus cuniculus 246-277 3427902-4 1987 A comparison of cholesterol synthesis and utilization in alloxan-induced diabetic rats and rabbits revealed that interspecies differences existed only in the response of the key enzymes regulating cholesterol utilization, namely cholesterol 7 alpha-hydroxylase and ACAT in the liver and intestine respectively. Cholesterol 16-27 cytochrome P450 7A1 Oryctolagus cuniculus 229-260 3427902-4 1987 A comparison of cholesterol synthesis and utilization in alloxan-induced diabetic rats and rabbits revealed that interspecies differences existed only in the response of the key enzymes regulating cholesterol utilization, namely cholesterol 7 alpha-hydroxylase and ACAT in the liver and intestine respectively. Alloxan 57-64 cytochrome P450 7A1 Oryctolagus cuniculus 229-260 3427902-4 1987 A comparison of cholesterol synthesis and utilization in alloxan-induced diabetic rats and rabbits revealed that interspecies differences existed only in the response of the key enzymes regulating cholesterol utilization, namely cholesterol 7 alpha-hydroxylase and ACAT in the liver and intestine respectively. Cholesterol 197-208 cytochrome P450 7A1 Oryctolagus cuniculus 229-260 28067465-10 2017 Interestingly, CHO also significantly increased the expression and activity of CYP7A1, as well as IBABP and LDL-R mRNA expressions, but decreased hepatic SHP and BSEP gene expressions. Cholestyramine Resin 15-18 cytochrome P450 7A1 Oryctolagus cuniculus 79-85 3981265-5 1985 These results suggested that accumulation of cholesterol observed in dystrophic muscle of vitamin E-deficient rabbits may be due to an increase in LDL and VLDL cholesterol, the plasma lipoproteins carrying cholesterol to peripheral tissue, and to a decrease in cholesterol 7 alpha-hydroxylase activity, whose activity may have been affected by the reduced level of cytochrome P-450. Cholesterol 45-56 cytochrome P450 7A1 Oryctolagus cuniculus 261-292 4019071-2 1985 This hypocholesterolemic effect was accompanied by an increase in hepatic cholesterol-7 alpha-hydroxylase activity and cytochrome P-450 level and by a redistribution of plasma lipoprotein-cholesterol resulting in the elevation of high density to low density lipoprotein-cholesterol ratio. Cholesterol 9-20 cytochrome P450 7A1 Oryctolagus cuniculus 74-105 31847222-9 2019 The upregulated ACACB, ACLY, LSS, and CYP7A1 genes were found to be inter-related through biological processes of thioester biosynthetic process, acyl-CoA biosynthetic process, acetyl-CoA metabolic process, and others. Acyl Coenzyme A 146-154 cytochrome P450 7A1 Oryctolagus cuniculus 38-44 31847222-9 2019 The upregulated ACACB, ACLY, LSS, and CYP7A1 genes were found to be inter-related through biological processes of thioester biosynthetic process, acyl-CoA biosynthetic process, acetyl-CoA metabolic process, and others. Acetyl Coenzyme A 177-187 cytochrome P450 7A1 Oryctolagus cuniculus 38-44 516187-4 1979 Using [7-3N1] cholesterol as a substrate, it established that the activity of cholesterol-7 alpha-hydroxylase, as compared to the initial level, is increased under training and decreased under conditions of low mobility. [7-3n1] cholesterol 6-25 cytochrome P450 7A1 Oryctolagus cuniculus 78-109 15254889-0 2004 Inhibition of ileal bile acid transport lowers plasma cholesterol levels by inactivating hepatic farnesoid X receptor and stimulating cholesterol 7 alpha-hydroxylase. Bile Acids and Salts 20-29 cytochrome P450 7A1 Oryctolagus cuniculus 134-165 24994853-0 2014 Bile acid flux through portal but not peripheral veins inhibits CYP7A1 expression without involvement of ileal FGF19 in rabbits. Bile Acids and Salts 0-9 cytochrome P450 7A1 Oryctolagus cuniculus 64-70 24994853-2 2014 The present study tested whether portal bile acid flux alone without ileal FGF19 could downregulate CYP7A1 expression in rabbits. Bile Acids and Salts 40-49 cytochrome P450 7A1 Oryctolagus cuniculus 100-106 24994853-5 2014 Compared with only BF, BF + GDCA (6 h portal perfusion) suppressed CYP7A1 mRNA, whereas BF + GDCA-f (via femoral vein) with the same perfusion rate of GDCA did not show inhibitory effects. benzo(b)fluoranthene 23-25 cytochrome P450 7A1 Oryctolagus cuniculus 67-73 24994853-5 2014 Compared with only BF, BF + GDCA (6 h portal perfusion) suppressed CYP7A1 mRNA, whereas BF + GDCA-f (via femoral vein) with the same perfusion rate of GDCA did not show inhibitory effects. Glycodeoxycholic Acid 28-32 cytochrome P450 7A1 Oryctolagus cuniculus 67-73 24994853-5 2014 Compared with only BF, BF + GDCA (6 h portal perfusion) suppressed CYP7A1 mRNA, whereas BF + GDCA-f (via femoral vein) with the same perfusion rate of GDCA did not show inhibitory effects. benzo(b)fluoranthene 23-25 cytochrome P450 7A1 Oryctolagus cuniculus 67-73 24994853-7 2014 This study demonstrated that portal bile acid flux alone downregulated CYP7A1 expression with diminished FGF19 expression and protein levels, whereas the same bile acid flux reaching the liver through the hepatic artery via femoral vein had no inhibitory effect on CYP7A1. Bile Acids and Salts 36-45 cytochrome P450 7A1 Oryctolagus cuniculus 71-77 24994853-8 2014 We propose that bile acid flux through the portal venous system may be a kind of "intestinal factor" that suppresses CYP7A1 expression. Bile Acids and Salts 16-25 cytochrome P450 7A1 Oryctolagus cuniculus 117-123 20456844-18 2010 3 can up-regulate the expression of CYP7A1 mRNA, raise the activity of CYP7A1, and inhibit the expressions of BSEP and SHP mRNAs to regulate the metabolism of total cholesterol in rabbits. Cholesterol 165-176 cytochrome P450 7A1 Oryctolagus cuniculus 36-42 20456844-18 2010 3 can up-regulate the expression of CYP7A1 mRNA, raise the activity of CYP7A1, and inhibit the expressions of BSEP and SHP mRNAs to regulate the metabolism of total cholesterol in rabbits. Cholesterol 165-176 cytochrome P450 7A1 Oryctolagus cuniculus 71-77 15386586-1 2004 Alternative HPLC and solid-phase extraction column methods were developed to separate metabolites of enzymes involved in cholesterol metabolism in rabbit liver microsomes: hydroxyl-methylglutaryl-CoA reductase, cholesterol-7alpha-hydroxylase and acyl-CoA:cholesterol acyltransferase. Cholesterol 121-132 cytochrome P450 7A1 Oryctolagus cuniculus 211-241 16489206-1 2006 The transcription of the cholesterol 7alpha-hydroxylase gene (CYP7A1) is greatly decreased in cholesterol-fed rabbits. Cholesterol 25-36 cytochrome P450 7A1 Oryctolagus cuniculus 62-68 16489206-7 2006 Thus, downregulation of CYP7A1 in cholesterol-fed rabbits is attributable secondarily to the activation of farnesoid X receptor, which increases SHP expression to override the positive effects of LXRalpha. Cholesterol 34-45 cytochrome P450 7A1 Oryctolagus cuniculus 24-30 15254889-0 2004 Inhibition of ileal bile acid transport lowers plasma cholesterol levels by inactivating hepatic farnesoid X receptor and stimulating cholesterol 7 alpha-hydroxylase. Cholesterol 54-65 cytochrome P450 7A1 Oryctolagus cuniculus 134-165 15254889-8 2004 Rabbits treated with SC-435 developed ileal bile acid malabsorption, which decreased the return of bile acids (FXR ligands) to the liver to inactivate hepatic FXR, which upregulated CYP7A1 and lowered plasma cholesterol levels. 1-(4-(4-(3,3-dibutyl-7-(dimethylamino)-2,3,4,5-tetrahydro-4-hydroxy-1,1-dioxido-1-benzothiepin-5-yl)phenoxy)butyl)-4-aza-1-azoniabicyclo(2.2.2)octane 21-27 cytochrome P450 7A1 Oryctolagus cuniculus 182-188 14681840-2 2004 The aim of the current study was to ascertain whether the level of this oxysterol reflects hepatic cholesterol 7alpha-hydroxylase activity when plasma cholesterol concentrations are markedly changed. Oxysterols 72-81 cytochrome P450 7A1 Oryctolagus cuniculus 99-129 14681840-10 2004 In conclusion, plasma 7alpha-hydroxy-4-cholesten-3-one concentrations reflected hepatic cholesterol 7alpha-hydroxylase activities when the sterol levels were adjusted to plasma cholesterol concentrations in rabbits with hypercholesterolemia. 7 alpha-hydroxy-4-cholesten-3-one 22-54 cytochrome P450 7A1 Oryctolagus cuniculus 88-118 14681840-11 2004 The results suggest that plasma 7alpha-hydroxy-4-cholesten-3-one relative to cholesterol is a better marker for hepatic cholesterol 7alpha-hydroxylase activity than the absolute concentration when hypercholesterolemia is present. 7alpha-hydroxy-4-cholesten 32-58 cytochrome P450 7A1 Oryctolagus cuniculus 120-150 14681840-11 2004 The results suggest that plasma 7alpha-hydroxy-4-cholesten-3-one relative to cholesterol is a better marker for hepatic cholesterol 7alpha-hydroxylase activity than the absolute concentration when hypercholesterolemia is present. Cholesterol 77-88 cytochrome P450 7A1 Oryctolagus cuniculus 120-150 12897188-0 2003 FXR-mediated down-regulation of CYP7A1 dominates LXRalpha in long-term cholesterol-fed NZW rabbits. Cholesterol 71-82 cytochrome P450 7A1 Oryctolagus cuniculus 32-38 12897188-1 2003 We investigated how cholesterol feeding regulates cholesterol 7alpha-hydroxylase (CYP7A1) via the nuclear receptors farnesoid X receptor (FXR) and liver X receptor alpha (LXRalpha) in New Zealand white rabbits. Cholesterol 20-31 cytochrome P450 7A1 Oryctolagus cuniculus 82-88 12897188-11 2003 After 10 days of cholesterol feeding, the bile acid (FXR ligand) pool size increased, which activated FXR and inhibited CYP7A1 despite continued activation of LXRalpha. Cholesterol 17-28 cytochrome P450 7A1 Oryctolagus cuniculus 120-126 12897188-11 2003 After 10 days of cholesterol feeding, the bile acid (FXR ligand) pool size increased, which activated FXR and inhibited CYP7A1 despite continued activation of LXRalpha. Bile Acids and Salts 42-51 cytochrome P450 7A1 Oryctolagus cuniculus 120-126 12401785-4 2002 Replacing the enterohepatic bile acid pool with DCA restored FXR mRNA and nuclear protein levels and activated FXR-mediated transcription as evidenced by the increased expression of its target genes, SHP and BSEP, and decreased CYP7A1 mRNA level and activity. Bile Acids and Salts 28-37 cytochrome P450 7A1 Oryctolagus cuniculus 228-234 12850506-4 2003 Enzymes involved in cholesterol metabolism (ACAT, HMG-CoA-reductase and cholesterol-7alpha-hydroxylase) are greatly influenced by cholesterol profile. Cholesterol 20-31 cytochrome P450 7A1 Oryctolagus cuniculus 72-102 12401785-4 2002 Replacing the enterohepatic bile acid pool with DCA restored FXR mRNA and nuclear protein levels and activated FXR-mediated transcription as evidenced by the increased expression of its target genes, SHP and BSEP, and decreased CYP7A1 mRNA level and activity. Deoxycholic Acid 48-51 cytochrome P450 7A1 Oryctolagus cuniculus 228-234 11792721-0 2002 Removal of the bile acid pool upregulates cholesterol 7alpha-hydroxylase by deactivating FXR in rabbits. Bile Acids and Salts 15-24 cytochrome P450 7A1 Oryctolagus cuniculus 42-72 11792721-6 2002 The data, taken together, indicate that FXR was deactivated when the bile acid pool was depleted such that CYP7A1 was upregulated. Bile Acids and Salts 69-78 cytochrome P450 7A1 Oryctolagus cuniculus 107-113