Calcium-dependent and calcium-independent contractions in smooth muscles.

Abstract

This review examines signal transduction pathways mediating agonist-induced contraction of circular muscle in the body of the esophagus and in the lower esophageal sphincter (LES). In the LES, circular muscle agonists activate a well-defined contractile pathway, involving calcium (Ca(2+))-induced activation of calmodulin and myosin kinase, causing… (More)

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