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    Distal mdx muscle groups exhibiting up-regulation of utrophin and rescue of dystrophin-associated glycoproteins exemplify a protected phenotype in muscular dystrophy


    Dowling, Paul, Culligan, Kevin and Ohlendieck, Kay (2002) Distal mdx muscle groups exhibiting up-regulation of utrophin and rescue of dystrophin-associated glycoproteins exemplify a protected phenotype in muscular dystrophy. Naturwissenschaften, 89 (2). pp. 75-78. ISSN 0028-1042

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    Abstract

    Unique unaffected skeletal muscle fibres, unlike necrotic torso and limb muscles, may pave the way for a more detailed understanding of the molecular pathogenesis of inherited neuromuscular disorders and help to develop new treatment strategies for muscular dystrophies. The sparing of extraocular muscle in Duchenne muscular dystrophy is mostly attributed to the special protective properties of extremely fast-twitching smalldiameter fibres, but here we show that distal muscles also represent a particular phenotype that is more resistant to necrosis. Immunoblot analysis of membranes isolated from the well established dystrophic animal model mdx shows that, in contrast to dystrophic limb muscles, the toe musculature exhibits an up-regulation of the autosomal dystrophin homologue utrophin and a concomitant rescue of dystrophin-associated glycoproteins. Thus distal mdx muscle groups provide a cellular system that naturally avoids myofibre degeneration which might be useful in the search for naturally occurring compensatory mechanisms in inherited skeletal muscle diseases.
    Item Type: Article
    Keywords: Distal mdx; muscle groups; up-regulation; utrophin; dystrophin-associated glycoproteins; protected phenotype; muscular dystrophy;
    Academic Unit: Faculty of Science and Engineering > Biology
    Item ID: 7341
    Identification Number: 10.1007/s00114-001-0289-4
    Depositing User: Paul Dowling
    Date Deposited: 15 Aug 2016 16:05
    Journal or Publication Title: Naturwissenschaften
    Publisher: Springer
    Refereed: Yes
    Funders: Health Research Board (HRB), Enterprise Ireland (EI), Royal Society, London, Royal Irish Academy
    Related URLs:
    URI: https://mural.maynoothuniversity.ie/id/eprint/7341
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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