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  • Title: Effect of ethanol on fatty acid metabolism in cultured hepatocytes: dependency on incubation time and fatty acid concentration.
    Author: Grunnet N, Jensen F, Kondrup J, Dich J.
    Journal: Alcohol; 1985; 2(1):157-61. PubMed ID: 4015831.
    Abstract:
    In a previous report it was shown that ethanol increases the rate of accumulation of triacylglycerol by 90% in hepatocytes in primary culture. This represents the first known suitable model for in vitro studies of the ethanol-induced fatty liver. The biochemical alterations causing this accumulation of triacylglycerol remain to be elucidated, however. In the present report it is shown that (1) the effect of ethanol exhibits a time lag of 6-9 hours (2) the increment in the content of triacylglycerol caused by ethanol is increased by increased concentrations of fatty acids (3) the fatty acid uptake is not affected by ethanol (4) fatty acid synthesis is inhibited 20% by ethanol (5) the contents of diacylglycerol and phospholipids are not affected by ethanol (6) addition of ethanol increases the cytosolic and mitochondrial redox levels. It is concluded that ethanol is likely to exert its effect on the accumulation of triacylglycerol by redistributing fatty acids between oxidation and triacylglycerol synthesis and/or between storage and secretion of triacylglycerol.
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