Key result
Nemaline myopathy progression demonstrates subsarcolemmal rod organization and type II to type I muscle fiber conversion.
Why the study?
The effect of mutations causing nemaline myopathy on protein expression and rod formation mechanisms, and potential progressive muscle fiber type alterations, remain under investigation.
Observational
The study provides morphological evidence supporting the progressive conversion of type II to type I muscle fibers and reorganization of rods in nemaline myopathy over time.
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Mechanisms of rod formation in nemaline myopathy remain unclear; leaves open how mutations alter protein expression.
Reed et al. (2003) conducted an observational in Nemaline myopathy. Disease progression was evaluated on Transformation of type I to type II fiber and rod pattern and distribution in muscle fibers. Disease progression in nemaline myopathy over 10 to 13 years demonstrated subsarcolemmal organization of diffuse rods and supported progressive conversion of type II to type I muscle fibers.
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