Abstract
The relation between kindling and susceptibility to ethanol withdrawal seizures was investigated using withdrawal seizure-prone (WSP) and withdrawal seizure-resistant (WSR) mice. These lines were developed by selective breeding to be prone and resistant, respectively, to handling-induced convulsions after chronic exposure to ethanol. Development of kindled seizures in response to electrical stimulation of the olfactory bulb was investigated in mice aged 2 and 8 months with no exposure to ethanol. Older WSP mice kindled more slowly than older WSR mice, requiring significantly more stimulations to reach the first stage 3 and the first stage 5 seizures. In younger mice, there was no significant difference between the two lines in the rate of kindling. The lower kindling rate in mature WSP mice is in contrast to their higher sensitivity to handling-induced convulsions on withdrawal from ethanol and other agents. This finding suggests that separate genetic factors underlie these two models of mouse seizures.
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