Endothelial dysfunction in MELAS improved by l-arginine supplementation.

Koga, Y; Akita, Y; Junko, N; Yatsuga, S; Povalko, N; Fukiyama, R; Ishii, M; Matsuishi, T · Neurology · 2006

case_series · Level IV

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Abstract

The authors evaluated endothelial function in patients with MELAS (mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke) by flow-mediated vasodilation (FMD) and found a significant decrease vs controls. Two years of supplementation with oral l-arginine, a nitric oxide precursor, significantly improved endothelial function to control levels and was harmonized with the normalized plasma levels of l-arginine in patients. l-Arginine therapy improved endothelial dysfunction and showed promise in treating strokelike episodes in MELAS.

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