Abstract

Mice of different inbred strains were treated with ethanol for 3 days, by inhalation of alcohol vapor and daily injections of pyrazole. Within strains, “alcohol-adapted” mice were compared with controls. The alcohol-adapted mice received 3.8% (w/v) alcohol in their drinking water for one week and 7.5% alcohol for the next 16 or 19 weeks. During the inhalation period, C57BL mice had lower blood alcohol levels than DBA mice, and alcohol-adapted mice had slightly lower blood levels than controls. On withdrawal the mice were examined repeatedly for convulsions elicited by handling, a measure of the intensity of withdrawal reactions. The withdrawal scores of C57BL mice were significantly lower than those of DBA, BALB or Swiss-Webster mice, more so than could be accounted for by the difference in blood alcohol levels. Mice of 3 strains were treated with reserpine and observed for behavioral effects, including convulsions on handling. Strain differences in reserpine effects closely paralleled the strain differences in alcohol withdrawal seizures.

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