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Episodic ataxia type 1:potassium channelopathy Shuichi Igarashi 1 1Department of Molecular Neuroscience, Niigata University Brain Research Institute, Center for Bioresouce-based Researches, Resource Branch for Brain Disease Research Keyword: 反復発作性失調症1型 , 電位依存性カリウムチャネル , ミオキミア , KCNA1 pp.259-262
Published Date 2003/4/10
DOI https://doi.org/10.11477/mf.1431100305
  • Abstract
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 Episodic ataxia type 1(EA1)is a rare autosomal dominant neuromuscular disorder characterized by episodes of ataxia associated with myokymia. Fourteen point mutations in KCNA1 voltage-gated potassium channel on chromosome 12p13 have been shown to associate with EA1.

 Recent expression experiments of KCNA1 with point mutations in Xenopus oocytes demonstrate that the mutations in KCNA1 affect channel function, and also suggest that a cellular mechanism underlying EA1 is related to inefficient repolarization following an action potential.


Copyright © 2003, 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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