MELAS and L-arginine therapy |
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Authors: | Koga Yasutoshi Akita Yukihiro Nishioka Junko Yatsuga Shuichi Povalko Nataliya Katayama Koujyu Matsuishi Toyojiro |
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Institution: | Department of Pediatrics and Child Health, Kurume University School of Medicine, 67 Asahi Machi, Kurume, Fukuoka 830-0011, Japan. yasukoga@med.kurume-u.ac.jp |
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Abstract: | 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. |
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