Abstract
Pregnant rats were administered ethanol, cimetidine or a combination of both drugs from day 14 of gestation until parturition. Ano-genital (AG) distance measured at birth was significantly reduced in males exposed to cimetidine, but not in males or females exposed to alcohol. AG distance in males exposed to both ethanol and cimetidine also was not reduced, indicating a possible protective influence of ethanol against this effect of cimetidine. Birthweights in both sexes were reduced by prenatal ethanol exposure, both alone and with cimetidine exposure. Prenatal cimetidine exposure, both alone and in combination with ethanol significantly reduced seminal vesicle weights of adult males. However, no long-term effects of ethanol or cimetidine were observed on adrenal, testicular or ovarian weights. These results indicate that when fetal alcohol exposure is restricted to the critical prenatal period for hormonal actions on sexual differentiation, testosterone levels are maintained at an adequate level for normal morphological development of the genitalia.
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