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Effect of Combined Treatment with Alpha Lipoic Acid and Acetyl-L-Carnitine on Vascular Function and Blood Pressure in Coronary Artery Disease Patients

Mitochondria produce reactive oxygen species that may contribute to vascular dysfunction. Alpha-lipoic acid and acetyl-L-carnitine reduce oxidative stress and improve mitochondrial function. In a double blind, crossover study, we examined the effects of combined alpha-lipoic acid /acetyl-L-carnitine treatment and placebo (eight weeks per treatment) on vasodilator function and blood pressure in 36 subjects with coronary artery disease. Active treatment increased brachial artery diameter by 2.3% (P=0.008), consistent with reduced arterial tone. Active treatment tended to decrease systolic blood pressure for the whole group (P=0.07) and had a significantly effect in the subgroup with blood pressure above the median (151±20 to 142±18 mmHg, P=0.03) and in the subgroup with the metabolic syndrome (139±21 to 130±18 mmHg, P=0.03). Thus, mitochondrial dysfunction may contribute to the regulation of blood pressure and vascular tone. Further studies are needed to confirm these findings and determine the clinical utility of alpha-lipoic acid/acetyl-L-carnitine as antihypertensive therapy.

Published on 02-12-2010
Authors: Craig J. McMackin, Michael E. Widlansky, Naomi M. Hamburg, Alex L. Huang, Susan Weller, Monika Holbrook, Noyan Gokce, Tory M. Hagen, John F. Keaney, Jr., and Joseph A. Vita
Source: J Clin Hypertens (Greenwich). 2007 April; 9(4): 249-255.