Volume 22, Issue 10 pp. 1341-1349
Invited Review

Neuromuscular disease and calcium channels

David A. Greenberg MD, PhD

Corresponding Author

David A. Greenberg MD, PhD

Buck Center for Research in Aging, Novato, California, USA and Department of Neurology, University of California, San Francisco, San Francisco, California, USA

Buck Center for Research in Aging, PO Box 638, Novato, CA 94948-0638Search for more papers by this author

Abstract

Calcium channels that are regulated by voltage have an important role in linking cellular stimulation to physiological responses in the nervous system. In addition, a number of autoimmune or genetic disorders that affect calcium channels (channelopathies) have been identified, including several that affect neuromuscular function. These include the Lambert–Eaton myasthenic syndrome, which is associated with autoantibodies directed against neuronal calcium channels, as well as at least two inherited neuromuscular diseases—hypokalemic periodic paralysis and some varieties of malignant hyperthermia—that affect calcium channels in skeletal muscle. Preliminary progress has been achieved in understanding the relationship between these immunological or genetic abnormalities and the alterations in channel function that they produce. A major challenge that remains is to determine how calcium channelopathies lead to the curious assortment of paroxysmal and progressive disorders that are observed clinically. © 1999 John Wiley & Sons, Inc. Muscle Nerve 22: 1341–1349, 1999

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