Abstract
The effects of chronic alcohol intake on the ethanol levels in body fluids (blood, amniotic fluid, and fetal intragastric content), hepatic alcohol dehydrogenase (ADH) activity, isoenzyme distribution, and hepatic zinc levels were studied in pregnant rats at term (19 and 21 days), in their offspring at fetal, perinatal, and weaned stages, and in adult virgin rats. Three experimental groups were studied: 1) the alcohol group received ethanol in drinking water (from 10% to 25% over 2 months), 2) the fibre diet group was undernourished on a hypocaloric diet, to assess the effects of malnutrition associated with chronic alcohol intake, and 3) the control group received no alcohol and normal diet. A gradient of increasing ethanol concentrations was found in fetal blood, amniotic fluid, and fetal intragastric contents with respect to maternal blood. A decrease in ADH activity was found in alcohol-consuming pregnant rats compared to controls. This was related neither to liver ADH isoenzyme distribution nor to changes in hepatic zinc levels. Chronic alcohol consumption in pregnant rats produced high ethanol accumulation in fetal fluids and changes in the liver ADH activity depending on the physiological situation (pregnancy, development, virgin state).
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