Marion A. Hofmann, Evanthia Lalla, Yan Lu, Michelle Ryu Gleason, Bonnie M. Wolf, Nozomu Tanji, Luis J. Ferran Jr., Brigitte Kohl, Vijay Rao, Walter Kisiel, David M. Stern, Ann Marie Schmidt
J Clin Invest.
2001;
107(6):675–683
doi:10.1172/JCI10588
This article Copyright © 2001, The American Society for Clinical Investigation
Abstract
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lthough hyperhomocysteinemia (HHcy) is a well-known risk factor for the development of cardiovascular disease, the underlying molecular mechanisms are not fully elucidated. Here we show that induction of HHcy in apoE-null mice by a diet enriched in methionine but depleted in folate and vitamins B6 and B12 increased atherosclerotic lesion area and complexity, and enhanced expression of receptor for advanced glycation end products (RAGE), VCAM-1, tissue factor, and MMP-9 in the vasculature. These homocysteine-mediated (HC-mediated) effects were significantly suppressed, in parallel with decreased levels of plasma HC, upon dietary supplementation with folate and vitamins B6/B12. These findings implicate HHcy in atherosclerotic plaque progression and stability, and they suggest that dietary enrichment in vitamins essential for the metabolism of HC may impart protective effects in the vasculature.
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