Pathogenesis of diverse clinical and pathological phenotypes in hypertrophic cardiomyopathy.

Abstract excerpt

Myocardial contractility is generally believed to be increased in hypertrophic cardiomyopathy. I propose the opposite--that cardiac myocyte contractility is decreased in this disorder. Accordingly, the contractile deficit provides the primary stimulus for increased expression of trophic factors in the heart, which leads to hypertrophy, interstitial fibrosis, and other phenotypes. Variation among individuals in...

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