Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 496792
Title Effect of vitamin B12 and folic acid supplementation on biomarkers of endothelial function and inflammation among elderly individuals with hyperhomocysteinemia
Author(s) Dijk, S.C. van; Enneman, A.W.; Swart, K.M.A.; Wijngaarden, J.P. van; Ham, A.C.; Jonge, R.; Blom, H.J.; Feskens, E.J.M.; Geleijnse, J.M.; Schoor, N.M. van; Dhonukshe-Rutten, R.A.M.; Jongh, R.T. de; Lips, P.; Groot, C.P.G.M. de; Uitterlinden, A.G.; Meiracker, A.H. van den; Mattace-Raso, F.U.S.; Velde, N. van der; Smulders, Y.
Source Vascular Medicine 21 (2016)2. - ISSN 1358-863X - p. 91 - 98.
Department(s) Human Nutrition (HNE)
Chair Nutrition and Health over the Lifecourse
Chair Nutrition and Disease
CS OnderwijsinstituutOnderwijsinstituut
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract B-vitamin trials failed to demonstrate beneficial effects on cardiovascular outcomes, but hyperhomocysteinemia still stands out as an independent cardiovascular risk factor, particularly in elderly individuals. B-vitamins may influence early vascular dysfunction, such as endothelial dysfunction, or may have adverse effects, for example on inflammation. We investigated the effect of B-vitamins on endothelial function and inflammation within an interventional study. This study was conducted within the framework of the B-PROOF trial, which included 2919 hyperhomocysteinemic elderly individuals, who received daily vitamin B12 (500 μg) and folic acid (400 μg) or placebo for 2 years. Using an electrochemiluminescence platform, we measured intercellular adhesion molecule 1 (ICAM-1), vascular adhesion molecule 1 (VCAM-1), serum amyloid A (SAA), vascular endothelial growth factor (VEGF) and C-reactive protein (CRP) at baseline and follow-up in a subsample of 522 participants (271 intervention group; 251 placebo). Treatment effects were analyzed with ANCOVA. The participants had a mean age of 72 years, and 55% of them were male. At the 2-year follow-up, B-vitamins did not change the ICAM-1 (+36% change in the intervention group versus +32% change in the placebo group; p = 0.72), VCAM-1 (+27% vs +25%; p = 0.39), VEGF (–1% vs +4%; p = 0.40), SAA (+34% vs +38%; p = 0.85) or CRP levels (+26% vs +36%; p = 0.70) as compared to placebo. In conclusion, in elderly patients with hyperhomocysteinemia, vitamin B12 and folic acid are unlikely to influence either endothelial function or low-grade systemic inflammation. Identifier: NCT00696514
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