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Skeletal muscle calcergy

J McClure

    The Journal of Pathology
    |May 1, 1982
    PubMed

    Insights

    Diphosphonates EHDP and Cl2MDP did not prevent muscle fiber calcification in mouse models. This suggests these compounds are unlikely to be effective treatments for myopathies involving calcium influx.

    Area of Science:

    • Muscle physiology
    • Pathology
    • Pharmacology

    Background:

    • Subcutaneous injection of mast cell degranulators or KMnO4 in mice induces calcification of Panniculus Carnosus muscle fibers.
    • This calcification occurs in damaged fibers near necrosis or uniformly at the reaction site, respectively.
    • Calcium influx into muscle fibers is a proposed mechanism in various myopathies.

    Purpose of the Study:

    • To investigate the effect of diphosphonates (EHDP and Cl2MDP) on chemically induced muscle fiber calcification in mice.
    • To evaluate the potential of diphosphonates as a therapeutic strategy for myopathies characterized by calcium influx.

    Main Methods:

    • Subcutaneous injections of mast cell degranulators and KMnO4 were administered to mice.
    • Muscle tissue was analyzed qualitatively and quantitatively following injections.
    • The influence of EHDP and Cl2MDP treatments on calcific responses was assessed.

    Main Results:

    • Neither EHDP nor Cl2MDP treatments affected the calcification of muscle fibers induced by either agent.
    • The study observed distinct patterns of calcification depending on the inducing chemical (mast cell degranulators vs. KMnO4).

    Conclusions:

    • The tested diphosphonates are unlikely to be efficacious in preventing muscle fiber calcification.
    • The findings suggest that diphosphonates may not be suitable for treating myopathies where muscle fiber calcification is driven by calcium influx.

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