Study Title: Arginase inhibition by (−)-Epicatechin reverses endothelial cell aging
Citation: Garate-Carrillo et al., 2020 · Food & Function
What the Study Found: (−)-Epicatechin inhibited arginase activity in aged endothelial cells, reducing oxidative stress and restoring the eNOS monomer/dimer ratio, protein expression, and nitric oxide production to youthful levels. In aged rats, treatment lowered blood pressure, improved aortic vasorelaxation, and increased blood nitric oxide levels. The effects were observed both in cultured cells and in vivo.
What this means in real life: Aging mitochondria in blood-vessel cells contribute to stiffness, reduced nitric oxide, and higher cardiovascular risk. This study shows that (−)-epicatechin can reverse key aspects of endothelial aging by restoring nitric oxide signaling and lowering oxidative stress. Supporting mitochondrial health helps keep your vascular system flexible and efficient as the years pass.
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