Uncoupling Protein-2 Modulates Myocardial Excitation-Contraction Coupling

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Uncoupling protein-2 modulates myocardial excitation-contraction coupling.

RATIONALE Uncoupling protein (UCP)2 is a mitochondrial inner membrane protein that is expressed in mammalian myocardium under normal conditions and upregulated in pathological states such as heart failure. UCP2 is thought to protect cardiomyocytes against oxidative stress by dissipating the mitochondrial proton gradient and mitochondrial membrane potential (DeltaPsi(m)), thereby reducing mitoch...

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The molecular and cellular mechanisms underlying sarcopenia, the age-related decline in muscle mass and strength, are not fully understood. It has been proposed that a reduced level of calcium ion-supply to contractile muscle proteins via excitation-contraction uncoupling leads to the muscle weakness associated with aging. The basic process of excitation-contraction uncoupling is a result of a ...

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ژورنال

عنوان ژورنال: Circulation Research

سال: 2010

ISSN: 0009-7330,1524-4571

DOI: 10.1161/circresaha.109.206631