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. 1981 Feb 15;194(2):639-43.
doi: 10.1042/bj1940639.

The activation of pyruvate dehydrogenase in the perfused rat heart by adrenaline and other inotropic agents

J G McCormack, R M Denton

The activation of pyruvate dehydrogenase in the perfused rat heart by adrenaline and other inotropic agents

J G McCormack et al. Biochem J. .

Abstract

Adrenaline resulted in a reversible 4-fold increase in the amount of pyruvate dehydrogenase in its active non-phosphorylated form in the perfused rat heart within 1 min. The increase was less in extent in hearts from starved or diabetic rats or in hearts from control rats oxidizing acetate, unless pyruvate was added to the perfusion medium. Increases could also be induced by other inotropic agents, supporting the hypothesis that increases in cytoplasmic Ca2+ can be relayed into mitochondria and influence oxidative metabolism.

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