Cholesterol and bile acid metabolism after selective portal vein ligation

The Journal of Surgical Research
I MakinoM Tanaka

Abstract

To examine the regulatory effect of bile acid level on bile acid synthesis in the liver. The portal branch perfusing left lateral and median lobes of the liver was ligated in rats and the activities of hepatic microsomal cholesterol 7 alpha-hydroxylase, the rate-limiting enzyme of bile acid synthesis, 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, and intrahepatic concentrations of cholesterol and bile acids were determined in the liver lobes deprived of and supplied with portal blood on Days 0, 1, 2, 4, and 7 after selective portal vein ligation (SPVL). In the portal vein (PV)-ligated lobes, liver weight decreased, hepatic cholesterol concentration was unchanged, and microsomal cholesterol concentration increased after SPVL. In the PV-nonligated lobes, liver weight increased, hepatic cholesterol concentration increased, and microsomal cholesterol concentration was unchanged. There were no significant differences in the activities of HMG-CoA reductase and cholesterol 7 alpha-hydroxylase among the PV-ligated and PV-nonligated lobes and the sham-operated controls. Intrahepatic bile acid level increased significantly in the PV-nonligated lobes for 4 days after SPVL, whereas those were essentially constant in the PV-lig...Continue Reading

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Citations

Jul 6, 2012·The Journal of Surgical Research·Lisette T HoekstraThomas M van Gulik
Jul 16, 2014·The Journal of Surgical Research·Floor HuismanThomas M van Gulik
Sep 8, 2012·World Journal of Surgery·Lisette T HoekstraThomas M van Gulik
Jan 5, 2000·Physiological Reviews·G J Schroepfer

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