We demonstrate for the first time that aged rats show greater EtOH-induced deficits compared with young adults in tasks of motor and cognitive performance. The possible role of protein kinase C as a mechanism for increased sensitivity to the motor-impairing effects of EtOH is discussed. Given the high prevalence of alcohol use among the elderly, increased vulnerability to alcohol-induced deficits may have a profound effect on injury in this population.
The elderly may be vulnerable to EtOH withdrawal as modified-CIE aged rats displayed anxiety-like behavior compared to controls during withdrawal despite achieving lower blood EtOH concentrations during treatment than younger adults. Our data also indicate that modified-CIE and EtOH withdrawal cause persistent cognitive impairments in both age groups. The results from this study provide further evidence indicating the elderly may be sensitive to the effects of alcohol.
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