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J Neuroimmunol. 2003 Sep;142(1-2):130-6.

Muscle inflammation and MHC class I up-regulation in muscular dystrophy with lack of dysferlin: an immunopathological study.

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  • 1Department of Neuromuscular Diseases, Istituto Nazionale Neurologico Carlo Besta, via Celoria 11, 20133 Milan, Italy. pconfalonieri@istituto-besta.it

Abstract

Muscle inflammation is characteristic of inflammatory myopathies but also occurs in muscular dystrophy with lack of the sarcolemmal protein dysferlin. We quantified inflammatory cells and major histocompatibility complex (MHC) expression in muscle from 10 patients with dysferlinopathy. Infiltrating cells were always present although numbers varied considerably; macrophages were more common than T cells, T cytotoxicity was absent, and MHC class I was overexpressed on muscle fibers. These findings differ from polymyositis (PM) but are closely similar to those in SJL/J mice (which lack dysferlin) and emphasize the relationship between absence of dysferlin and immune system abnormalities in muscle.

PMID:
14512171
[PubMed - indexed for MEDLINE]
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