Mechanisms of adaptive supersensitivity in smooth muscles vs cardiac muscle: a brief review.

Abstract

1. Depending upon the type of cell being studied, adaptive supersensitivity has been traced to molecular changes in receptors, the Na+/K+ pump or the G-protein/adenylate cyclase system. 2. Evidence is reviewed that indicates that adaptive supersensitivity in guinea-pig atria is the result of changes in the G-protein/adenylate cyclase system. 

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