Abstract
Neurosteroids are modulators of neuronal function that may play important role in brain maturation. The aim of the present investigation was to study the effect of prenatal exposure to acute and chronic ethanol on brain progesterone, estradiol, and testosterone concentration on 10th and 15th days following egg incubation. Eggs were exposed to ethanol at 10% in chronic treatment and 70% in acute treatment. Progesterone, estradiol, and testosterone were assayed by radioimmunoassay method. It was shown that brain progesterone level was significantly decreased (P < 0.05) in chronic ethanol group on embryonic day 10, but it was significantly decreased (P < 0.05) in acute and chronic groups on embryonic day 15. Brain estradiol level was significantly increased (P < 0.05) in chronic ethanol group on embryonic day 10, and it was decreased (P < 0.05) in acute and chronic groups of ethanol on embryonic day 15. Brain testosterone was significantly increased (P < 0.05) in acute and chronic ethanol-exposed groups on embryonic days 10 and 15. Our observations suggest that ethanol may modulate neurosteroid synthesis in the brain.
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