Abstract
Ethanol exposure during early development could predispose an individual to increased ethanol consumption. Given the high prevalence of adolescent ethanol abuse, it is important to assess the potential impact of adolescent ethanol exposure on the development of alcohol drinking. The following study was designed to assess the initiation of ethanol consumption in adult rats after exposure to ethanol vapors during adolescence. Male Sprague–Dawley rats ( n = 23) were exposed to ethanol vapor for 12 h per day for 10 consecutive days between postnatal days 30 and 40. Ethanol vapor exposure maintained blood ethanol levels averaging 250 mg/dl. All rats were subsequently trained to self-administer ethanol after a 52-day withdrawal period. When ethanol consumption was assessed in the adult rats (>3 months old) there were no significant differences in initiation or maintenance of ethanol self-administration between ethanol-exposed and control rats. In addition, there were no group differences in the ability of a noise stressor presented before the drinking session to transiently decrease ethanol intake. Overall, these findings indicate that forced exposure to ethanol vapor during adolescence does not seem to be sufficient to alter initiation or maintenance of limited-access ethanol self-administration.
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