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- W2810403782 abstract "Abstract Seizures in neonates, mainly caused by hypoxic-ischemic encephalopathy, are thought to be harmful to the brain. Phenobarbital remains the first line drug therapy for the treatment of suspected neonatal seizures but concerns remain with efficacy and safety. Here we explored the short- and long-term outcomes of phenobarbital treatment in a mouse model of hypoxia-induced neonatal seizures. Seizures were induced in P7 mice by exposure to 5% O 2 for 15 minutes. Immediately after hypoxia, pups received a single dose of phenobarbital (25 mg.kg −1 ) or saline. We observed that after administration of phenobarbital seizure burden and number of seizures were reduced compared to the hypoxic period; however, PhB did not suppress acute histopathology. Behavioural analysis of mice at 5 weeks of age previously subjected to hypoxia-seizures revealed an increase in anxiety-like behaviour and impaired memory function compared to control littermates, and these effects were not normalized by phenobarbital. In a seizure susceptibility test, pups previously exposed to hypoxia, with or without phenobarbital, developed longer and more severe seizures in response to kainic acid injection compared to control mice. Unexpectedly, mice treated with phenobarbital developed less hippocampal damage after kainic acid than untreated counterparts. The present study suggests phenobarbital treatment in immature mice does not improve the long lasting functional deficits induces by hypoxia-induced seizures but, unexpectedly, may reduce neuronal death caused by exposure to a second seizure event in later life." @default.
- W2810403782 created "2018-07-10" @default.
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- W2810403782 date "2018-07-03" @default.
- W2810403782 modified "2023-10-17" @default.
- W2810403782 title "Complex spectrum of phenobarbital effects in a mouse model of neonatal hypoxia-induced seizures" @default.
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- W2810403782 doi "https://doi.org/10.1038/s41598-018-28044-2" @default.
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