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A novel bile acid-activated vitamin D receptor signaling in human hepatocytes.

Vitamin D receptor (VDR) is activated by natural ligands, 1alpha,

Tags: 2010, Calcitriol/*metabolism, Calcitriol/pharmacology, Cell Membrane/drug effects/metabolism, Cell Nucleus/drug effects/metabolism, Chiang John Y L, Cholesterol 7-alpha-Hydroxylase/antagonists & inhibitors/genetics, Department of Integrative Medical Sciences, Ellis Ewa, Enzyme Activation/drug effects, Extracellular Signal-Regulated MAP Kinases/antagonists & inhibitors, Genetic/genetics, Han Shuxin, Hep G2 Cells, Hepatocyte Nuclear Factor 4/metabolism, Hepatocytes/*drug effects/enzymology/*metabolism, Humans, Intracellular Space/drug effects/metabolism, Li Tiangang, Ligands, Lithocholic Acid/*pharmacology, Mitogen-Activated Protein Kinase Kinases/metabolism, Molecular endocrinology (Baltimore, Md.), NEOMED College of Medicine, Phosphorylation/drug effects, Phosphotyrosine/metabolism, Promoter Regions, Protein Kinase Inhibitors/pharmacology, Protein Transport/drug effects, Proto-Oncogene Proteins c-raf/metabolism, Receptors, Retinoid X Receptor alpha/metabolism, Signal Transduction/*drug effects, src-Family Kinases/metabolism, Steroid Hydroxylases/genetics/metabolism, Strom Stephen, Vitamin D3 24-Hydroxylase

Insulin regulation of cholesterol 7alpha-hydroxylase expression in human hepatocytes: roles of forkhead box O1 and sterol regulatory element-binding protein 1c.

Bile acid synthesis and pool size increases in diabetes, whereas insulin inhibits bile acid synthesis. The objective of this study is to elucidate the mechanism of insulin regulation of cholesterol 7alpha-hydroxylase gene expression in human…

Overexpression of cholesterol 7alpha-hydroxylase promotes hepatic bile acid synthesis and secretion and maintains cholesterol homeostasis.

UNLABELLED: We reported previously that mice overexpressing cytochrome P450 7a1 (Cyp7a1; Cyp7a1-tg mice) are protected against high fat diet-induced hypercholesterolemia, obesity, and insulin resistance. Here, we investigated the underlying mechanism…

Hepatocyte growth factor signaling pathway inhibits cholesterol 7alpha-hydroxylase and bile acid synthesis in human hepatocytes.

UNLABELLED: Bile acid synthesis in the liver is regulated by the rate-limiting enzyme cholesterol 7alpha-hydroxylase (CYP7A1). Transcription of the CYP7A1 gene is inhibited by bile acids and cytokines. The rate of bile acid synthesis is reduced…

Tags: 2007, Bile Acids and Salts/*biosynthesis, Cells, Chiang John Y L, Cholesterol 7-alpha-Hydroxylase/*biosynthesis, Cultured, Department of Integrative Medical Sciences, Ellis Ewa, Hepatocyte Growth Factor/*metabolism, Hepatocytes/*metabolism, Hepatology (Baltimore, Md.), Humans, NEOMED College of Medicine, Signal Transduction, Song Kwang-Hoon, Strom Stephen

Browse Items (4 total)

A novel bile acid-activated vitamin D receptor signaling in human hepatocytes.

Insulin regulation of cholesterol 7alpha-hydroxylase expression in human hepatocytes: roles of forkhead box O1 and sterol regulatory element-binding protein 1c.

Overexpression of cholesterol 7alpha-hydroxylase promotes hepatic bile acid synthesis and secretion and maintains cholesterol homeostasis.

Hepatocyte growth factor signaling pathway inhibits cholesterol 7alpha-hydroxylase and bile acid synthesis in human hepatocytes.