“…It has been shown that by increasing plasma homocysteine concentrations using methionine infusion, FMD is impaired and this is associated with increased plasma ADMA [33]. Increased plasma concentrations of ADMA have also been described in a number of other conditions (Tables 1, 2) including diabetes mellitus, hypercholesterolaemia, hypertriglyceridaemia, hypertension, preeclampsia, stroke, peripheral vascular disease, congestive heart failure and acute coronary events [34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54]. Of interest, increased ADMA concentrations have also been implicated in the pathogenesis of conditions not affecting the cardiovascular system such as schizophrenia although the exact mechanism has yet to be clarified [55].…”