Abstract
Clarifying the underlying mechanisms of epileptogenesis is important in preventing the progression of chronic epilepsy. In epilepsy, the mTOR (mammalian target of rapamycin) pathway plays a critical role in mediating the mechanism of epileptogenesis. In this study, we investigate whether apigenin can exert antiepileptogenic effects through the inhibition of mTOR in the kainate model of epilepsy. For assessing the antiepileptogenic effect of apigenin in kainic acid (KA)-induced temporal lobe epilepsy (TLE) model, apigenin at a dose of 50mg/kg was administrated by gavage for 6days. An intracranial electroencephalogram (iEEG) was performed to confirm the establishment of status epilepticus. BrdU was used to detect neurogenesis in the CA3, and dentate gyrus and mossy fiber sproutings were assessed by Timm staining. The expression of mTOR was quantified via western blot. We found that apigenin-pretreatment had a significant inhibitory effect on neural cell death, spontaneous seizure spikes, aberrant neurogenesis, mTOR hyperactivity, and aberrant mossy fiber sprouting. Overall, these results suggest that apigenin has an antiepileptogenic effect and may be a useful target for inhibiting mTOR hyperactivity in epilepsy.
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