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Mechanism of vitamin D receptor inhibition of cholesterol 7alpha-hydroxylase gene transcription in human hepatocytes.

Lithocholic acid (LCA) is a potent endogenous vitamin D receptor (VDR) ligand. In cholestasis, LCA levels increase in the liver and intestine. The objective of this study is to test the hypothesis that VDR plays a role in inhibiting cholesterol…

Rifampicin induction of CYP3A4 requires pregnane X receptor cross talk with hepatocyte nuclear factor 4alpha and coactivators, and suppression of small heterodimer partner gene expression.

Bile acids and drugs activate pregnane X receptor (PXR) to induce CYP3A4, which is the predominant cytochrome P450 enzyme expressed in the liver and intestine and plays a critical role in detoxifying bile acids and drugs, and protecting against…

Tags: 2006, Antibiotics, Antitubercular/*pharmacology, Blotting, Cell Line, Chiang John Y L, Chromatin/metabolism, Cytochrome P-450 CYP3A, Cytochrome P-450 Enzyme System/*biosynthesis, Cytoplasmic and Nuclear/*biosynthesis/*drug effects/genetics, Department of Integrative Medical Sciences, Drug metabolism and disposition: the biological fate of chemicals, Electrophoretic Mobility Shift Assay, Enzyme Induction/drug effects, Glutathione Transferase/metabolism, Hepatocyte Nuclear Factor 4/genetics/*metabolism, Hepatocytes/drug effects/metabolism, Humans, Immunoprecipitation, Li Tiangang, Messenger/biosynthesis, NEOMED College of Medicine, Plasmids/genetics, Pregnane X Receptor, Receptor Cross-Talk/drug effects, Receptors, Reverse Transcriptase Polymerase Chain Reaction, Rifampin/*pharmacology, RNA, Steroid/*drug effects/genetics, Transfection, Tumor, Western

Resveratrol suppresses nuclear factor-kappaB in herpes simplex virus infected cells.

Resveratrol inhibits herpes simplex virus (HSV) replication by an unknown mechanism. Previously it was suggested that this inhibition may be mediated through a cellular factor essential for HSV replication [Docherty, J.J., Fu, M.M., Stiffler, B.S.,…

Browse Items (3 total)

Mechanism of vitamin D receptor inhibition of cholesterol 7alpha-hydroxylase gene transcription in human hepatocytes.

Rifampicin induction of CYP3A4 requires pregnane X receptor cross talk with hepatocyte nuclear factor 4alpha and coactivators, and suppression of small heterodimer partner gene expression.

Resveratrol suppresses nuclear factor-kappaB in herpes simplex virus infected cells.