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Myotonia congenita:chloride channelopathy Takayoshi Kobayashi 1 1Department of Neurology, Nakano General Hospital Keyword: 先天性ミオトニア , トムセン病 , ベッカー病 , クロライドチャネル pp.283-290
Published Date 2003/4/10
DOI https://doi.org/10.11477/mf.1431100309
  • Abstract
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 Myotonia congenita(MC)is a nonprogressive, non dystrophic myotonic disorder caused by mutations of the gene encoding the chloride channel of skeletal muscle(CLCN1). The dominant(Thomsen disease)and recessive(Becker disease)forms are allelic disorder that are caused by different mutations within the CLCN1gene. More than 50mutations have been reported so far. The functional defects caused by these mutations include a deporlarizing shift in the voltage dependence of opening, an increase in cation permeability, and an inverted voltage-dependent gating of CLCN1 channels. Further understanding of genetic and physiological defects may lead to better diagnosis and treatment of patients with myotonia congenita.


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

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