Epilepsy research
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The aim of the present study was to investigate whether sensitivity to flurothyl seizures after an acute methamphetamine (MA) administration is different in prenatally MA-exposed adult rats than in controls without prenatal drug exposure. Adult male and female rats exposed prenatally to MA (5mg/kg), saline or neither (controls) were divided into groups; one group received acute MA (1mg/kg s.c.) injection and the other group received saline. Rats were then challenged with flurothyl at a constant flow rate to induce seizures. ⋯ Estrous cycle influences did not lead to changes between groups of prenatal exposure or acute MA administration. Threshold of tonic-clonic seizures was increased in females in proestrus/estrus stage of the estrous cycle relative to diestrous females. Our study suggests that prenatal MA exposure affects the sensitivity of adult rats to the effect of acute MA treatment prior to flurothyl seizures relative to controls.