Abstract
The effect of short term maternal ethanol administration on the disposition of ethanol in the ovine maternal-fetal unit was determined. Eleven conscious instrumented near-term pregnant ewes (between 125 and 134 days of gestation; term, 147 days) received 1-hr iv infusion of 1 g of ethanol.kg of maternal body weight-1.day-1 for six days (N = 6 ewes) or an equivalent volume of saline for six days (N = 5 ewes). On the seventh day, the ethanol- and saline-pretreated animals were administered 1 g of ethanol.kg of maternal body weight-1. Ethanol and acetaldehyde concentrations were determined by headspace GLC in maternal blood, fetal blood, and amniotic fluid samples obtained at selected times during the 14-hr study. The data demonstrated that short term maternal administration of once-daily moderate dose ethanol did not produce major changes in the disposition of ethanol and its proximate metabolite, acetaldehyde, in the maternal, fetal, and amniotic fluid compartments during near-term ovine pregnancy.
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