Sarcolemmal defect and subsarcolemmal lesion in a patient withγ-sarcoglycan deficiency

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Abstract

Article abstract

We report a case of γ-sarcoglycanopathy with sarcolemmal defects and subsarcolemmal lesions indistinguishable from those in Duchenne muscular dystrophy. Both disorders share certain ultrastructure features that suggest a common pathogenesis related to primary deficiency of transmembrane glycoproteins (e.g., sarcoglycans) or deficiency in dystrophin, which produces a secondary deficiency in sarcoglycans. The lack of transmembrane glycoproteins may contribute to membrane lesions and associated muscle fiber degeneration and necrosis.

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