Abstract
Adult mice (Binghamton Heterogeneous stock) received different doses of ethanol (0.5, 1.0, or 2.0 g/kg) administered alone or in combination with the voltage-sensitive calcium channel antagonist, nimodipine (Bay e 9736). Both 20 and 60 minutes later, sensitivity to ethanol was assessed in terms of rotorod activity and changes in rectal temperatures. Nimodipine (5 mg/kg) alone did not alter rectal temperature or motor coordination, but at both observation periods nimodipine potentiated the hypothermia induced by the highest dose of alcohol (2.0 g/kg) and exaggerated alcohol-induced motor incoordination at all doses. The present set of results indicates that the inhibition of voltage-dependent calcium channels can exaggerate ethanol-induced effects.
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