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- W4220737306 abstract "IQSEC2 is an X-linked gene localized to the post synaptic density encoding a GTP exchange factor that regulates NMDA mediated changes in synaptic function. Mutations in the IQSEC2 gene are associated with drug resistant epilepsy, intellectual disability and autism. Precision medicine based therapeutics to treat IQSEC2 associated epilepsy requires the development and characterization of mutation specific animal models. To date no EEG recordings have been presented for any mouse model of any IQSEC2 mutation showing seizures. In this study we characterize the seizures and EEG brain wave abnormalities present in mice with a A350V IQSEC2 missense mutation that is associated with drug resistant epilepsy in man. We show that seizures are associated with a greater than 40% mortality rate in male mice and occur exclusively from post-natal day 16-20. EEG recordings of mouse pups during this window demonstrate seizures and the presence of spikes with a marked increase in delta waves. EEG recordings in adult male mice have persistent excessive slow frequency activity and spikes, but seizures were not recorded. RNAseq analysis of the hippocampi of mice prior to the development of seizures demonstrated marked abnormalities in canonical pathways involved in synaptogenesis and dendritic maturation with the most prominently dysregulated gene being that for TRH suggesting a potential target for therapy given the previous demonstration of TRH to decrease seizures in several forms of drug resistant epilepsy." @default.
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- W4220737306 date "2022-05-01" @default.
- W4220737306 modified "2023-10-18" @default.
- W4220737306 title "Characterization of spontaneous seizures and EEG abnormalities in a mouse model of the human A350V IQSEC2 mutation and identification of a possible target for precision medicine based therapy" @default.
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- W4220737306 doi "https://doi.org/10.1016/j.eplepsyres.2022.106907" @default.
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