Levetiracetam normalized E/I imbalance in the hippocampus after cortical stroke in aged mice
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ABSTRACT: Stroke is a prevalent disorder representing the third leading cause of death and major cause of disability. Post-stroke epilepsy (PSE) has been recognized as a common clinical issue after stroke, accounting for 30-40% of the causes of epilepsy among older adults. In this study, we determined GABAA receptor-mediated seizure susceptibility after PT cerebral stroke in aged mice. Young adult mice around 10 weeks of age are widely used in stroke experiments. However, as most strokes are diagnosed in the elderly and PSE has been recognized as a common clinical incidence after stroke, we utilized photothrombosis (PT) model of cerebral ischemia and examined seizure susceptibility. To investigate in vitro drug-induced seizure susceptibility (E/I imbalance) of GABAA receptor antagonist, gabazine (GZ), voltage-sensitive dye (VSD) imaging techniques were used in hippocampal brain slices. One month after PT stroke, in vivo aged PT stroke mice exhibited severe convulsive seizures (late-onset). in vitro GZ-induced E/I imbalance in hippocampus of aging mice increased compared to young adults. In addition, Anti-seizure medication (levetiracetam) normalized in vitro GZ-induced E/I imbalance in hippocampus of aging mice. These findings exhibited that GABAA receptor-mediated seizures susceptibility (E/I imbalance) in hippocampus after cortical PT stroke in aging mice, but not in young adults.
ORGANISM(S): Mus musculus
PROVIDER: GSE241525 | GEO | 2023/11/27
REPOSITORIES: GEO
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