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Structure and functions of human oxysterol 7alpha-hydroxylase cDNAs and gene CYP7B1.

Oxysterol 7alpha-hydroxylase has broad substrate specificity for sterol metabolites and may be involved in many metabolic processes including bile acid synthesis and neurosteroid metabolism. The cloned human oxysterol 7alpha-hydroxylase (CYP7B1) cDNA…

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

PXR induces CYP27A1 and regulates cholesterol metabolism in the intestine.

Mitochondrial sterol 27-hydroxylase (CYP27A1) catalyzes oxidative cleavage of the sterol side chain in the bile acid biosynthetic pathway in the liver and

Tags: *Lipid Metabolism, 2007, ATP Binding Cassette Transporter, ATP Binding Cassette Transporter 1, ATP-Binding Cassette Transporters/genetics, Base Sequence, Cell Line, Chen Wenling, Chiang John Y L, Cholestanetriol 26-Monooxygenase/*metabolism, Cholesterol, Cholesterol/*metabolism, Department of Integrative Medical Sciences, Fluorinated, Genes, Genetic/drug effects, Genetic/genetics, HDL/metabolism, Hepatocytes/drug effects/enzymology/metabolism, Humans, Hydrocarbons, Hydroxycholesterols/metabolism/pharmacology, Intestinal Mucosa/metabolism, Intestines/cytology/drug effects/enzymology, Journal of lipid research, Li Tiangang, Member 1, Messenger/genetics/metabolism, Molecular Sequence Data, NEOMED College of Medicine, Pregnane X Receptor, Promoter Regions, Receptors, Reporter, Response Elements/genetics, Rifampin/pharmacology, RNA, Steroid/*metabolism, Subfamily G, Sulfonamides/pharmacology, Transcription, Up-Regulation/drug effects

Leptin augments recruitment of IRF-1 and CREB to thrombospondin-1 gene promoter in vascular smooth muscle cells in vitro.

We previously reported that high pathophysiological concentrations of leptin, the adipocyte-secreted peptide, upregulate the expression of a potent proatherogenic matricellular protein, thrombospondin-1 (TSP-1), in vascular smooth muscle cells.…

Tags: *cAMP response element-binding protein, *interferon regulatory factor-1, *leptin, *thrombospondin-1, *Transcription, *vascular smooth muscle cells, 2016, American journal of physiology. Cell physiology, Binding Sites/genetics, Cells, Chromatin Immunoprecipitation/methods, Cultured, Cyclic AMP Response Element-Binding Protein/*metabolism, Department of Integrative Medical Sciences, Ganguly Rituparna, Gene Expression Regulation/genetics, Genetic/genetics, Humans, Interferon Regulatory Factor-1/*metabolism, Leptin/*metabolism, Muscle, Mutagenesis, Myocytes, NEOMED College of Medicine, Promoter Regions, Raman Priya, Response Elements/genetics, Sahu Soumyadip, Site-Directed/methods, Smooth, Smooth Muscle/*metabolism, Thrombospondin 1/*genetics/*metabolism, Transcription, Transcriptional Activation/genetics, Transfection/methods, Up-Regulation/genetics, Vascular/*metabolism

Glucose and insulin induction of bile acid synthesis: mechanisms and implication in diabetes and obesity.

Bile acids facilitate postprandial absorption of nutrients. Bile acids also activate the farnesoid X receptor (FXR) and the G protein-coupled receptor TGR5 and play a major role in regulating lipid, glucose, and energy metabolism. Transgenic…

APeg3, a novel paternally expressed gene 3 antisense RNA transcript specifically expressed in vasopressinergic magnocellular neurons in the rat supraoptic nucleus.

Vasopressin (VP) and oxytocin (OT) play critical roles in the regulation of salt and water balance, lactation, and various behaviors and are expressed at very high levels in specific magnocellular neurons (MCNs) in the hypothalamo-neurohypophysial…

Tags: 2005, 3' Untranslated Regions/genetics, Amino Acid, Animals, Antisense/*genetics/isolation & purification/*metabolism, Brain research. Molecular brain research, Conserved Sequence/genetics, DNA-Binding Proteins/genetics/*metabolism, Gainer Harold, Gene Expression Regulation/*genetics, Genetic/genetics, Genomic Imprinting/genetics, Glasgow Eric, Hypothalamo-Hypophyseal System/cytology/metabolism, Kruppel-Like Transcription Factors, Male, Messenger/genetics/metabolism, Molecular Sequence Data, Mutsuga Noriko, Neurons/*metabolism, Nucleic Acid, Protein Kinases/genetics/*metabolism, Rats, RNA, Ryu Seung-Lim, Sequence Homology, Sprague-Dawley, Supraoptic Nucleus/cytology/*metabolism, Transcription, Transcription Factors/genetics/*metabolism, Vasopressins/*metabolism, Water-Electrolyte Balance/genetics, Yamashita Mitsuo, Zhang Bing-Jun

The human cytochrome b5 gene and two of its pseudogenes are located on chromosomes 18q23, 14q31-32.1 and 20p11.2, respectively.

Using very high stringency hybridization conditions for the Southern blot hybridization analysis of hamster-human cell hybrid DNA, we were able to map the human cytochrome b5 gene and two of its pseudogenes (psgb(5)1 and psgb(5)2) unambiguously to…

Effects of bile acids and steroid/thyroid hormones on the expression of cholesterol 7 alpha-hydroxylase mRNA and the CYP7 gene in HepG2 cells.

The expression of cholesterol 7 alpha-hydroxylase mRNA levels in confluent HepG2 cultures was reduced by tauro- or glyco-conjugates of deoxycholate and chenodeoxycholate, but not by cholate. Ursodeoxycholates, on the other hand, stimulated the mRNA…

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