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Triadopathies: an emerging class of skeletal muscle diseases.


ABSTRACT: The triad is a skeletal muscle substructure responsible for the regulation of excitation-contraction coupling. It is formed by the close apposition of the T-tubule and the terminal sarcoplasmic reticulum. A rapidly growing list of skeletal myopathies, here referred to as triadopathies, are caused by gene mutations in components of the triad. These disorders, at their root, are caused by defects in excitation contraction coupling and intracellular calcium homeostasis. Secondary abnormalities in triad structure and/or function are also reported in several muscle diseases, most notably certain muscular dystrophies. This review highlights the current understanding of both primary and secondary triadopathies, and identifies important concepts yet to be fully addressed in the field. The emphasis of the review is both on the pathogenesis of triadopathies and their potential treatment.

SUBMITTER: Dowling JJ 

PROVIDER: S-EPMC4391390 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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Triadopathies: an emerging class of skeletal muscle diseases.

Dowling James J JJ   Lawlor Michael W MW   Dirksen Robert T RT  

Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics 20141001 4


The triad is a skeletal muscle substructure responsible for the regulation of excitation-contraction coupling. It is formed by the close apposition of the T-tubule and the terminal sarcoplasmic reticulum. A rapidly growing list of skeletal myopathies, here referred to as triadopathies, are caused by gene mutations in components of the triad. These disorders, at their root, are caused by defects in excitation contraction coupling and intracellular calcium homeostasis. Secondary abnormalities in t  ...[more]

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