Abstract
Low folate levels are related to increased risk for coronary artery disease in humans, while experimental work has shown that folate deficiency is thrombogenic. We hypothesized that relatively low folate levels are related to the development of acute coronary syndromes in patients with previously stable coronary artery disease. One hundred and forty-one men were studied: 53 consecutive patients with acute coronary syndromes, 41 with stable coronary artery disease and 47 control participants. Known clinical and lipid risk factors were identified in all subjects and in addition plasma B12, plasma and red cell folate levels were measured. Red cell folate levels were significantly lower in patients with acute coronary syndromes (510+/-178 nmol/l) than in both stable coronary artery disease patients (638+/-264 nmol/l, P< 0.005) and controls (615+/-193 nmol/l, P< 0.05 respectively). Plasma folate and B12 levels were similar in all three groups. Multiple logistic regression analysis identified red cell folate levels as the only independent predictor of acute coronary events in the whole population of patients with known coronary artery disease and in the subgroup of non-smokers (P=0.010 and P=0.031). The present study suggests that relatively low red cell folate levels are associated with acute coronary syndromes and are an independent predictor of acute coronary events.
Published Version
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