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Int J Cardiol. 2013 Jul 31;167(2):508-13. doi: 10.1016/j.ijcard.2012.01.060. Epub 2012 Feb 23.

Cardiovascular effects of B-vitamins and/or N-3 fatty acids: the SU.FOL.OM3 trial.

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  • 1Université Paris-Descartes, Faculté de Médecine, AP-HP, Hôtel-Dieu, Centre de Diagnostic et Thérapeutique, Paris, France. jacques.blacher@htd.aphp.fr

Abstract

BACKGROUND:

Mechanisms involved in coronary stenosis evolution are different than those involved in clinical events. Because of differential vascular effects, N-3 polyunsatured fatty acids (PUFA) and B vitamins could have differential effects on different types of cardiovascular clinical events in high-risk patients.

METHODS:

We analyzed the effects of n-3 PUFA and of B vitamins on both coronary revascularization and on hard coronary events risks in a subgroup of the SU.FOL.OM3 trial, a randomized, double-blind, placebo-controlled secondary prevention trial. Data were analyzed according to the intention-to-treat principle, with the use of Cox proportional-hazards models.

RESULTS:

After a mean follow-up of 4.2 ± 1.0 years among the 1,863 participants with coronary heart disease, 163 coronary revascularizations were performed, and 95 patients experienced a hard coronary event. Neither treatment with n-3 PUFA, nor treatment with B vitamins was associated with any significant effect on the occurrence of hard coronary events. Allocation to n-3 PUFA was not associated with any significant effect on coronary revascularization. However, treatment with B vitamins was associated with a statistically significant 52% increase in the risk of coronary revascularization (multivariate HR: 1.52; 95% CI: [1.11-2.10]; p=0.01).

CONCLUSIONS:

Neither n-3 PUFA, nor B vitamins reduced the rates of hard coronary events and of coronary revascularization. Furthermore, B vitamins significantly increased the rate of coronary revascularization. Consistent with the findings of previous trials, our results do not support the routine use of dietary supplements containing n-3 PUFA and argue against using dietary supplements containing B-vitamins in coronary patients in secondary cardiovascular prevention.

Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

PMID:
22365647
[PubMed - indexed for MEDLINE]
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