Skeletal muscle sodium channelopathies.

Abstract:

PURPOSE OF REVIEW:This is an update on skeletal muscle sodium channelopathies since knowledge in the field have dramatically increased in the past years. RECENT FINDING:The relationship between two phenotypes and SCN4A has been confirmed with additional cases that remain extremely rare: severe neonatal episodic laryngospasm mimicking encephalopathy, which should be actively searched for since patients respond well to sodium channel blockers; congenital myasthenic syndromes, which have the particularity to be the first recessive Nav1.4 channelopathy. Deep DNA sequencing suggests the contribution of other ion channels in the clinical expressivity of sodium channelopathies, which may be one of the factors modulating the latter. The increased knowledge of channel molecular structure, the quantity of sodium channel blockers, and the availability of preclinical models would permit a most personalized choice of medication for patients suffering from these debilitating neuromuscular diseases. SUMMARY:Advances in the understanding of the molecular structure of voltage-gated sodium channels, as well as availability of preclinical models, would lead to improved medical care of patients suffering from skeletal muscle, as well as other sodium channelopathies.

journal_name

Curr Opin Neurol

authors

Nicole S,Fontaine B

doi

10.1097/WCO.0000000000000238

subject

Has Abstract

pub_date

2015-10-01 00:00:00

pages

508-14

issue

5

eissn

1350-7540

issn

1473-6551

journal_volume

28

pub_type

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