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- W2011487890 abstract "There is growing evidence that free radical generation may play a key role in the neuronal damage induced by prolonged convulsions. Free radical scavengers are known to inhibit neuronal death induced by exposure to excitotoxins. However, this neuroprotective effect has not been demonstrated with treatment after seizures had been stopped. We investigated whether 3-methyl-1-phenyl-2-pyrazolin-5-one, edaravone (Ed), a newly developed free radical scavenger that has been used clinically to treat cerebral infarction, could prevent neuronal loss when administered after the occurrence of seizures in a kainic acid (KA)-induced seizure model. Compared with KA alone, cell loss was significantly reduced when animals received Ed (10 mg/kg i.v.) just after seizures, and when Ed was administered both 60 min before (30 mg/kg i.p.) and after KA injection. Combined before-and-after treatment with Ed significantly ameliorated the KA-induced decrease of glutathione and blocked the KA-induced increase of 4-hydroxy-2-nonenal (HNE). Because before-and-after treatment with Ed significantly lessened the KA-induced increase of HNE, Ed may exert its neuroprotective effect by inhibiting lipid peroxidation. However, post-treatment with Ed prevented neuronal cell loss, while HNE and glutathione levels did not differ from those in animals without Ed, so a mechanism other than free radical scavenging must be involved in the prevention of cell loss. Patients who develop status epilepticus are unlikely to receive adequate antioxidant therapy before the onset, so it is an advantage that Ed can prevent neuronal death even when administered after seizures." @default.
- W2011487890 created "2016-06-24" @default.
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- W2011487890 date "2008-05-01" @default.
- W2011487890 modified "2023-10-18" @default.
- W2011487890 title "Edaravone prevents kainic acid-induced neuronal death" @default.
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- W2011487890 doi "https://doi.org/10.1016/j.brainres.2008.02.064" @default.
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