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标题：Direct association between diet and the stability of human atherosclerotic plaque
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作者：Isabel Gonçalves ; Elisavet Andersson Georgiadou ; Sören Mattsson 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep15524
出版社：Springer Nature
摘要：Mediterranean diet has been suggested to explain why coronary heart disease mortality is lower in southern than northern Europe. Dietary habits can be revealed by isotope ratio mass spectrometry (IRMS) measurement of carbon (δ¹³C) and nitrogen (δ¹⁵N) in biological tissues. To study if diet is associated with human plaque stability, atherosclerotic plaques from carotid endarterectomy on 56 patients (21 Portuguese and 35 Swedish) were analysed by IRMS and histology. Plaque components affecting rupture risk were measured. Swedish plaques had more apoptosis, lipids and larger cores, as well as fewer proliferating cells and SMC than the Portuguese, conferring the Swedish a more rupture-prone phenotype. Portuguese plaques contained higher δ¹³C and δ¹⁵N than the Swedish, indicating that Portuguese plaques were more often derived from marine food. Plaque δ¹³C correlated with SMC and proliferating cells, and inversely with lipids, core size, apoptosis. Plaque δ¹⁵N correlated with SMC and inversely with lipids, core size and apoptosis. This is the first observational study showing that diet is reflected in plaque components associated with its vulnerability. The Portuguese plaques composition is consistent with an increased marine food intake and those plaques are more stable than those from Swedish patients. Marine-derived food is associated with plaque stability.