A role for external Ca2+ in maintaining muscle contractility in periodic paralysis

Author:

Cannon Stephen C.1ORCID

Affiliation:

1. Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA

Abstract

Calcium gluconate has been empirically administered to hasten recovery of force during an episode of periodic paralysis. By using a genetically engineered mouse model, Uwera and colleagues show that low Ca2+ clearly promotes a loss of force in affected muscle, thereby providing the first evidence for the benefit of maintaining normal Ca2+ levels in this disorder.

Funder

National Institute of Arthritis and Musculoskeletal and Skin Diseases

Publisher

Rockefeller University Press

Subject

Physiology

Reference12 articles.

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3. Adynamia episodica hereditaria;Gamstorp;Acta Paediatr. (Stockh.),1956

4. Slow inactivation differs among mutant Na channels associated with myotonia and periodic paralysis;Hayward;Biophys. J,1997

5. Targeted mutation of mouse skeletal muscle sodium channel produces myotonia and potassium-sensitive weakness;Hayward;J. Clin. Invest,2008

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