Levetiracetam: antiepileptic properties and protective effects on mitochondrial dysfunction in experimental status epilepticus

Epilepsia
Julie E GibbsHannah R Cock

Abstract

To assess the anticonvulsant activity of the novel antiepileptic drug, levetiracetam (LEV) in a model of self-sustaining limbic status epilepticus, and to measure the consequence of LEV treatment on the pattern of mitochondrial dysfunction known to occur after status epilepticus (SE). The rat perforant pathway was stimulated for 2 h to induce self-sustaining status epilepticus (SSSE). Stimulated rats were assigned to one of three treatment groups, receiving intraperitoneal injections of saline, 200 mg/kg LEV, or 1,000 mg/kg LEV, 15 min into SSSE and at 3 times over the next 44-h period. All animals received diazepam after 3-h SSSE to terminate seizures. Forty-four hours later, the hippocampi were extracted and prepared for electrochemical high-performance liquid chromatography (HPLC), to measure reduced glutathione levels, and for spectrophotometric assays to measure activities of mitochondrial enzymes (aconitase, alpha-ketoglutarate dehydrogenase, citrate synthase, complex I, and complex II/III). These parameters were compared between treatment groups and with sham-operated rats. LEV administration did not terminate seizures or have any significant effect on spike frequency, although rats that received 1,000 mg/kg LEV did exhi...Continue Reading

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