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  • Title: Efficacy of folic acid when added to statin therapy in patients with hypercholesterolemia following acute myocardial infarction: a randomised pilot trial.
    Author: Liem AH, van Boven AJ, Veeger NJ, Withagen AJ, Robles de Medina RM, Tijssen JG, van Veldhuisen DJ, Folic Acid on Risk Diminishment After Acute Myocarial Infarction Study Group.
    Journal: Int J Cardiol; 2004 Feb; 93(2-3):175-9. PubMed ID: 14975544.
    Abstract:
    BACKGROUND: Folic acid is assumed to have favourable effects on vascular endothelium, directly as well as indirectly through its effect on homocysteine metabolism. However, the clinical value of folic acid in secondary prevention after acute myocardial infarction (MI) has never been tested. Thus, a randomised, open-label, multicentre trial was performed in order to study the effect of folic acid 5 mg o.d. when added to statin therapy on the incidence of recurrent major clinical events up to 1 year post-MI. METHODS: A total of 283 patients with a total cholesterol >6.5 mmol/l (251 mg/dl) (mean 7.3 mmol/l) were included. All patients received 40 fluvastatin. In 140 of the 283 patients, folic acid (5 mg o.d.) was instituted at discharge, and the remaining 143 patients served as controls. Other secondary prevention measures for both groups were advocated. The primary endpoint was a composite consisting of all vascular events, including death, recurrent MI, strokes, and unplanned invasive coronary interventions. RESULTS: At baseline, the two groups were well-matched for all clinical and demographic parameters. After 1 year of treatment, no difference was noticed in the primary endpoint between the two groups. These endpoints occurred in 43 patients (31%) in the folic acid group, as opposed to 45 patients (31%) in the control group. All separate cardiovascular events were also equally distributed between both groups. Total cholesterol levels decreased to a similar extent in the two groups (to 5.5 and 5.7 mmol/l, in folic acid and control groups, respectively). CONCLUSIONS: In this medium-size pilot study, folic acid did not demonstrate any beneficial additive effects on cardiovascular mortality or morbidity in post-MI patients with hypercholesterolemia who were treated with statin therapy. Larger trials, possibly targeting at selected populations, must be awaited before definitive conclusions regarding the potentially favourable effects of folic acid supplementation in secondary prevention can be drawn.
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