Identifying the hepatic organic anion transporter: One of many?

Steven A. Weinman – 1 December 1994 – Using expression cloning in Xenopus laevis oocytes, we have isolated a cDNA encoding a rat liver organic anion‐transporting polypeptide (oatp). The cloned oatp mediated Na+‐independent uptake of sulfobromophthalein (BSP) which was Cl−‐dependent in the presence of bovine serum albumin (BSA) at low BSP concentrations (e.g., 2 μM). Addition of increasing amounts of BSA had no effects on the maximal velocity of initial BSP uptake, but it increased the Km value from 1.5 μM (no BSA) to 24 μM (BSA/BSP molar ratio, 3.7) and 35 μM (BSA/BSP ratio, 18.4).

Alteration in vascular reactivity in isolated aortic rings from portal vein—constricted rats

Stelios Karatapanis, P. Aiden McCormickM.D.MRCP, Shilpa Kakad, Jason K. T. Chin, Mohammed Islam, Jamie Jeremy, David Harry, Neil McIntyre, Andrew K. Burroughs, Michael Jacobs – 1 December 1994 – It has been suggested that increased production of nitric oxide by an inducible nitric oxide synthase isoenzyme is important in the pathogenesis of the vascular abnormalities seen in human beings and animals with portal hypertension. We investigated this hypothesis by studying the in vitro vascular reactivity of isolated aortic rings from portal vein—constricted and sham‐operated rats.

Induction of hepatic ito cell nitric oxide production after acute endotoxemia

Lesley Helyar, Daniela S. Bundschuh, Jeffrey D. Laskin, Debra L. Laskin – 1 December 1994 – Nitric oxide is a highly reactive mediator released in the liver by hepatocytes, Kupffer cells and endothelial cells during endotoxin‐induced inflammation. In this study we determined whether Ito cells also produce nitric oxide after exposure to endotoxin. For induction of endotoxemia, rats were injected intravenously with Escherichia coli lipopolysaccharide (2.5 mg/kg).

Effect of distal splenorenal shunt on survival of patients with primary biliary cirrhosis

Thomas D. Boyer, Dennis D. Kokenes, Gary Hertzler, Michael H. Kutner, J. Michael Henderson – 1 December 1994 – Distal splenorenal shunt is known to effectively control bleeding from esophageal and gastric varices; however, the effect of this selective shunt on liver function is less well understood. We examined retrospectively the effect of distal splenorenal shunt on the survival of 19 patients with primary biliary cirrhosis subjected to surgery for bleeding varices over a 20‐yr period and had been followed for at least 1 yr.

Phospholipid antibodies in alcoholic liver disease

Antonio Chedid, Kurmanadha R. Chadalawada, Timothy R. Morgan, Thomas E. Moritz, Charles L. Mendenhall, James B. Hammond, Peter W. Emblad, Doris C. Cifuentes, Joanne W. H. Kwak, Alice Gilman‐Sachs, Kenneth D. Beaman – 1 December 1994 – Alcoholic liver injury has been reported to be directed preferentially against the proteins of the cell membrane, sparing the phospholipids. However, antiphospholipid antibodies against certain cell membrane phospholipids are known to be associated with a variety of diseases.

Prednisone‐interferon combination in the treatment of chronic hepatitis B: Direct and indirect metanalysis

Marielle Cohard, Thierry Poynard, Philippe Mathurin, Jean Pierre Zarski – 1 December 1994 – The aim of this study was to review all published randomized clinical trials evaluating the efficacy of a combination of prednisone and interferon in treatment of chronic hepatitis B and to subject these studies to metanalysis. Two types of metanalyses were carried out: direct metanalysis, comparing the prednisone‐interferon combination with interferon on its own; and indirect metanalysis, comparing the treatment efficacy of prednisone‐interferon and of interferon with control results.

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