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Genuine myotubular myopathy

Identifieur interne : 000448 ( Istex/Corpus ); précédent : 000447; suivant : 000449

Genuine myotubular myopathy

Auteurs : Murray C. Edström ; Romuald Wr Blewski ; Romuald Mair

Source :

RBID : ISTEX:328C9C96B3430E0229EBD5FBBC888313657CC483

Abstract

Two patients, a father and his 14‐year‐old son, were suffering from a facioperoneal syndrome, and muscle biopsy findings were consistent with a myotubular myopathy. The father exhibited central nuclei in most muscle fibers, but his son had typical changes exclusively in hypotrophic type I fibers. The cytochemical and ultrastructural analysis revealed a spectrum of pathological changes typical of myotubular myopathy. Energy‐dispersive electron probe x‐ray microanalysis was performed on 6‐to 12‐μm thick freeze‐dried cryosections visualized in the scanning or scanning transmission mode of electron microscopy. We found a high intracellular sodium and chlorine concentration and a low potassium concentration in comparison with control muscles. These changes pointed in the direction similar to results from human fetal muscle. The changes in the intracellular elemental composition may indicate a membrane pump dysfunction, which might be caused by a partial arrest in muscle fiber maturation.

Url:
DOI: 10.1002/mus.880050804

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ISTEX:328C9C96B3430E0229EBD5FBBC888313657CC483

Le document en format XML

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<titleInfo type="abbreviated">
<title>Muscle Nerve</title>
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<genre type="Journal">journal</genre>
<subject>
<genre>article category</genre>
<topic>Article</topic>
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<identifier type="ISSN">0148-639X</identifier>
<identifier type="eISSN">1097-4598</identifier>
<identifier type="DOI">10.1002/(ISSN)1097-4598</identifier>
<identifier type="PublisherID">MUS</identifier>
<part>
<date>1982</date>
<detail type="volume">
<caption>vol.</caption>
<number>5</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>8</number>
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<extent unit="pages">
<start>604</start>
<end>613</end>
<total>10</total>
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<identifier type="istex">328C9C96B3430E0229EBD5FBBC888313657CC483</identifier>
<identifier type="DOI">10.1002/mus.880050804</identifier>
<identifier type="ArticleID">MUS880050804</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright © 1982 John Wiley & Sons, Inc.</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
<recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin>
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