Abstract Title:

MELAS and L-arginine therapy.

Abstract Source:

Mitochondrion. 2007 Feb-Apr;7(1-2):133-9. Epub 2006 Dec 5. PMID: 17276739

Abstract Author(s):

Yasutoshi Koga, Yukihiro Akita, Junko Nishioka, Shuichi Yatsuga, Nataliya Povalko, Koujyu Katayama, Toyojiro Matsuishi

Article Affiliation:

Department of Pediatrics and Child Health, Kurume University School of Medicine, 67 Asahi Machi, Kurume, Fukuoka 830-0011, Japan. [email protected]


We investigated the endothelial function in MELAS patients and also evaluated the therapeutic effects of L-arginine. Concentrations of L-arginine during the acute phase of MELAS were significantly lower than in control subjects. L-arginine infusions significantly improved all symptoms suggesting stroke within 30 min, and oral administration significantly decreased frequency and severity of stroke-like episodes. Flow-mediated dilation (FMD) in patients showed a significant decrease than those in the controls. Two years of oral supplementation of L-arginine significantly improved endothelial function to the control levels and was harmonized with the normalized plasma levels of L-arginine in patients. L-arginine therapy showed promise in treating stroke-like episodes in MELAS.

Study Type : Human Study
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