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Epileptogenesis in EL mice brain Yoshiya L. Murashima 1 , Mitunobu Yoshii 1 , Jiro Suzuki 1 1Division of Psychobiology, Tokyo Institute for Psychiatry Keyword: epileptic mutant , EL mouse , abnormal plasticity pp.665-683
Published Date 2005/10/10
DOI https://doi.org/10.11477/mf.1431100084
  • Abstract
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In EL mice, ictogenesis has been established at around 10 weeks of age, whereas epileptogenesis will be established through experience of repetitive seizures during development. It is suggested that an“abnormal neural plasticity”may play a crucial role in the establishment of ictogenesis and epileptogenesis, and therefore, can be a potential target for the development of a new pharmacotherapy to the epilepsy. It is reported that some isoforms of nitric oxide synthetases(nNOS and eNOS)are both necessary for the establishment of long-term potentiation(LTP)phenomena. LTP and abnormal neural plasticity will play the key roles in the establishment of physiological brain function and pathogenesis of epileptic disorder.

 To investigate the role of abnormal neural plasticity in the autogenesis and epileptogenesis in EL mice brain, epileptic mutant were analyzed by biochemical and molecular biological methods. And recently, antiapoptotic, proapoptotic factors and neurotrophic factors are suggested playing a role not only in the cell survival but also in the epileptogenesis. In the brain of EL, it was shown that DNA fragmentation without cell loss was observed in the parietal cortex and hippocampus, which play a key role in the seizure initiation and generalization respectively.

 To investigate the role of antiapoptotic, proapoptotic factors and neurotrophic factors in the ictogenesis and epileptogenesis in EL mice brain, developmental changes of these factors are determined.


Copyright © 2005, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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