Arginine (L-arginine), is an amino acid involved in a number of biological processes, including the biosynthesis of proteins, host immune response, urea cycle, and nitric oxide production. In this systematic review, we focus on the functional role of arginine in the regulation of endothelial function and vascular tone. Both clinical and preclinical studies are examined, analyzing the effects of arginine supplementation in hypertension, ischemic heart disease, aging, peripheral artery disease, and diabetes mellitus.
Keywords: ADMA; BH4; COVID-19; L-arginine; NADPH; arginine; arginine paradox; blood pressure; dietary supplements; eNOS uncoupling; endothelial dysfunction; endothelium; heart failure; hypertension; myocardial infarction; nitric oxide; oxidative stress; peripheral artery disease.