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Characterization of dystrophin in Duchenne/Becker muscular dystrophy and mdx mice. Kiichi ARAHATA 1 , Shoichi ISHIURA 1 , Toshifumi TSUKAHARA 1 , Hideo SUGITA 1 1National Institute of Neuroscience, NCNP pp.637-651
Published Date 1989/8/10
DOI https://doi.org/10.11477/mf.1431906318
  • Abstract
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Both Duchenne (DMD) and Becker (BMD) muscular dystrophies are X-linked recessive muscle diseases which share common DMD gene defect in the Xp21 region. The gene has recently been isolated by Kunkel's group and shown to be the largest gene known in man, spanning at least 65 exons distributed over 2,500 kb. Its 14 kb mRNA produces a 427 kd protein named ‘dystrophin’ in normal muscle. We have recently shown that an antiserum raised against a synthetic peptide fragment predicted from the DMD cDNA had a specific immunohistochemical reaction with the surface membrane of normal skeletal and cardiac muscle fibers, whereas it had no reaction with muscles from patients with DMD and mdx mice. We also have reported the mosaic expression of dystrophin in symptomatic carriers of Duchenne muscular dystrophy, which may have special implications for genetic counseling. In this reveiw article we outline the cloning and the expression of DMD gene, molecular model of dystrophin and its physiological function, localization in normal muscle and various neuromuscular diseases including DMD and BMD and DMD carrier. Immunohistological and biochemical differences of DMD and BMD was also discussed, as well as animal model of DMD with special interest in mdx mice.


Copyright © 1989, 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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