Alcohol consumption enhances fatty acid ω‐oxidation, with a greater increase in male than in female rats

Xiaoli Ma, Enrique Baraona, Charles S. Lieber – 1 November 1993 – Because ethanol inhibits mitochondrial fatty acid oxidation, with substantial accumulation of fatty acids in the livers of female (but not male) rats, and induces microsomal activities, we assessed possible changes in ω‐oxidation. To study this, we pair‐fed 24 male and 24 female littermate rats of the same age liquid diets containing 36% of energy either as ethanol or as additional carbohydrate for 4 wk. In controls, the microsomal ω‐hydroxylation of lauric acid was 28% greater in female than in male rats (p < 0.05).

Apoptosis is induced by transforming growth factor‐β1 within 5 hours in regressing liver without significant fragmentation of the DNA

Franziska Oberhammer, Wilfried Bursch, Roman Tiefenbacher, Gertraud Fröschl, Margit Pavelka, Tonio Purchio, Rolf Schulte‐Hermann – 1 November 1993 – In previous studies we showed that transforming growth factor‐β1 induces apoptosis in hepatocyte cultures and regressing livers, the mature form being more potent than the transforming growth factor‐β1 latency‐associated protein. In this study we addressed the question of whether apoptosis can be induced within a short time after administration of transforming growth factor‐β1.

Selectivity and sensitivity of changes in serum bile acids during induction of cirrhosis in ratsselectivity and sensitivity of changes in serum bile acids during induction of cirrhosis in rats

Samy A. Azer, Michael Murray, Geoffrey C. Farrell, Neill H. Stacey – 1 November 1993 – Because some patients with cirrhosis have serum transaminase levels within the normal range, a prospective study was undertaken to determine whether the concentration of individual serum bile acids would be a sensitive indicator of development of cirrhosis. The choline‐deficient rat has been used as a model for study of these changes. Using high‐performance liquid chromatography, we measured the concentrations of individual serum bile acids at 3, 6, 10, 20 and 30 wk of dietary intake.

Expression of multidrug resistance genes in rat liver during regeneration and after carbon tetrachloride intoxication

Harushige Nakatsukasa, Jeffrey A. Silverman, Timothy W. Gant, Ritva P. Evarts, Snorri S. Thorgeirsson – 1 November 1993 – We analyzed expression of multidrug resistance (mdr) genes in rat liver during regeneration after partial hepatectomy or carbon tetrachloride–induced necrosis. In situ hybridization revealed that in the normal liver the cellular distribution of mdr transcripts and protein is restricted to hepatocytes and that a gradient, highest in zone 1 and lowest in zone 3, exists in the level of the mdr transcripts in the liver acinus.

Factors predictive of liver histopathological appearance in chronic alcoholic pancreatitis with common bile duct stenosis and increased serum alkaline phosphatase

Gilles Lesur, Philippe Levy, Jean‐François Flejou, Jacques Belghiti, François Fekete, Pierre Bernades – 1 November 1993 – In the course of alcoholic chronic pancreatitis, increased serum alkaline phosphatase level is usually caused by common bile duct stenosis but may also be due to alcoholic liver disease. The aims of this prospective study were to investigate whether clinical, biochemical and radiological factors could predict liver histopathological appearance.

Parallel decrease of Na+ ‐taurocholate cotransport and its encoding mRNA in primary cultures of rat hepatocytes

Dana Liang, Bruno Hagenbuch, Bruno Stieger, Peter J. Meier – 1 November 1993 – We investigated the molecular mechanism underlying the progressive loss of Na+ ‐dependent bile salt uptake in primary cultured rat hepatocytes. A specific cDNA probe was used to quantitate the levels of mRNA encoding the Na+ ‐taurocholate–cotransporting polypeptide at various culture times. Hepatocytes were cultured on collagen in the presence of insulin (10−7 mol/L), dexamethasone (10−7 mol/L) and 10% fetal calf serum for up to 72 hr.

Circulating interleukin‐1 and tumor necrosis factor antagonists in liver disease

Herbert Tilg, Wolfgang Vogel, Christian J. Wiedermann, Leland Shapiro, Manfred Herold, Gert Judmaier, Charles A. Dinarello – 1 November 1993 – The proinflammatory cytokines interleukin‐1 and tumor necrosis factor‐α are thought to play important roles in the pathophysiology of liver disease. Specific antagonists of these cytokines have been found in recent years. Interleukin‐1 receptor antagonist is a specific interleukin‐1 antagonist.

Randomized controlled trial of desmopressin plus terlipressin vs. terlipressin alone for the treatment of acute variceal hemorrhage in cirrhotic patients: A multicenter, double‐blind study

Roberto de Franchis, Paolo G. Arcidiacono, Luca Carpinelli, Bruno Andreoni, Lorenzo Cestari, Sergio Brunati, Alessandro Zambelli, Giorgio Battaglia, Pier M. Mannucci – 1 November 1993 – 1‐Deamino‐8‐D‐arginine vasopressin (DDAVP, desmopressin), a synthetic analog of the antidiuretic hormone L‐arginine vasopressin, improves hemostasis parameters in cirrhotic patients. Hence its use in combination with a vasoactive drug such as terlipressin might improve the performance of this drug in controlling variceal bleeding.

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