Abstract

featured in this issue of Circulation presents data showingthat pyruvate, which dose-dependently improved perfor-mance in myocardium from failing human hearts, may be onesuch agent.A number of abnormalities in both energy metabolism andcontractile function have been identified in failing cardiacmuscle. Metabolic changes include decreases in high energyphosphorylation potential, decreases in mitochondrial oxida-tive phosphorylation capacity, and a switch to a more fetalglycolytic metabolism.

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