Browse Items (27 total)

Using morpholino antisense oligonucleotide (MO) technology, we blocked leptin A or leptin receptor expression in embryonic zebrafish, and analyzed consequences of leptin A knock-down on fish development. Embryos injected with leptin A or leptin…

The regulation of the rabbit apical sodium-dependent bile acid transporter ( ASBT) was studied both in vivo and in vitro. New Zealand White rabbits were fed 0.5% deoxycholic acid (DCA) or SC-435, a competitive ASBT inhibitor, for 1 wk. In DCA-fed…

Cholesterol 7alpha-hydroxylase, the rate-determining enzyme in the bile acid biosynthesis pathway, is regulated in a negative feedback manner by hydrophobic bile salts returning to the liver via the portal circulation. The role of cholesterol in the…

Rats of the Sprague-Dawley strain were infused intravenously with a fat emulsion (Intralipid, trademark of Kabi Pharmacia, Uppsala, Sweden) containing 7-oxocholesterol. This resulted in an increased cholesterol 7alpha-hydroxylase activity in liver…

The cholesterol 7 alpha-hydroxylase gene (CYP7A) is transcriptionally regulated by a number of factors, including hormones, bile acids, and diurnal rhythm. Previous studies have identified a region from nucleotides (nt) -74 to -55 of the rat CYP7A…

Taurocholate, a relatively hydrophobic bile salt, is a potent down-regulator of HMG-CoA reductase and cholesterol 7-alpha-hydroxylase (C7-alpha-H), the rate-determining enzymes of the cholesterol and bile acid biosynthetic pathways, respectively.…

Cholesterol 7alpha-hydroxylase, the rate-limiting enzyme in the bile acid synthesis pathway, is down-regulated by taurocholate by way of negative feedback control at the level of gene transcription. The molecular basis of regulation of cholesterol…

Purified cholesterol 7 alpha-hydroxylases (C7 alpha H) from human and rat liver microsomes, and from transformed Escherichia coli expression systems, were incubated with 0.3 mmol/L [gamma-P-32] adenosine triphosphate (ATP) in the presence and absence…

We have isolated and sequenced a cDNA clone corresponding to human liver cytochrome b5 mRNA. The 760 base pair (bp) sequence contains the complete coding and 3' non-translated regions plus 52 bp of 5' non-translated sequence. The derived amino acid…

We have isolated cDNA clones corresponding to partially processed human liver cytochrome b5 mRNAs. All the clones contained poly(A) sequences, and one clone had a shorter 3' non-translated sequence, indicating the use of an alternative poly(A)…

Human liver cholesterol 7 alpha-hydroxylase (CYP7) cDNAs were isolated from a human liver cDNA library. A full-length cDNA has 2901 nucleotides which encode a typical P450 polypeptide of 504 amino acid residues. Two different sequences of codon 100,…

Using a synthetic 26 base pair (bp) oligonucleotide, we have screened a rabbit liver cDNA library in lambda gt11 and isolated a 1000 bp DNA clone corresponding to cytochrome b5 mRNA. The clone contains the complete coding region and long 5' and 3'…

A cholesterol 7 alpha-hydroxylase gene containing 8 kb of the 5'-flanking region and 5 kb of the transcription region which covers exons 1 to 5 was isolated from a rat genomic library. The 2015 bp nucleotide sequence 5'-upstream from the start codon…

The ICP34.5 gene from HSV-2 strain 333 was cloned and, when expressed in Vero cells, enhanced the efficiency and extent of glycoprotein processing of glycoprotein C (gC1), a representative viral glycoprotein, during infection with

From a series of lambda and cosmid libraries, we isolated DNA sequences corresponding to the complete coding region for the human cytochrome b5 (CYB5) gene. The overall gene organization was the same as the bovine and rabbit CYB5 genes. One cosmid…

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