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Oral exposure to acrolein exacerbates atherosclerosis in apoE-null mice.

Abstract：

BACKGROUND:Acrolein is a dietary aldehyde that is present in high concentrations in alcoholic beverages and foods including cheese, donuts and coffee. It is also abundant in tobacco smoke, automobile exhaust and industrial waste and is generated in vivo during inflammation and oxidative stress. OBJECTIVES:The goal of this study was to examine the effects of dietary acrolein on atherosclerosis. METHODS:Eight-week-old male apoE-null mice were gavage-fed acrolein (2.5mg/kg/day) for 8 weeks. Atherosclerotic lesion formation and composition and plasma lipids and platelet factor 4 (PF4) levels were measured. Effects of acrolein and PF4 on endothelial cell function was measured in vitro. RESULTS:Acrolein feeding increased the concentration of cholesterol in the plasma. NMR analysis of the lipoproteins showed that acrolein feeding increased the abundance of small and medium VLDL particles. Acrolein feeding also increased atherosclerotic lesion formation in the aortic valve and the aortic arch. Immunohistochemical analysis showed increased macrophage accumulation in the lesions of acrolein-fed mice. Plasma PF4 levels and accumulation of PF4 in atherosclerotic lesions was increased in the acrolein-fed mice. Incubation of endothelial cells with the plasma of acrolein-fed mice augmented transmigration of monocytic cells, which was abolished by anti-PF4 antibody treatment. CONCLUSIONS:Dietary exposure to acrolein exacerbates atherosclerosis in apoE-null mice. Consumption of foods and beverages rich in unsaturated aldehydes such as acrolein may be a contributing factor to the progression of atherosclerotic lesions.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Srivastava S,Sithu SD,Vladykovskaya E,Haberzettl P,Hoetker DJ,Siddiqui MA,Conklin DJ,D'Souza SE,Bhatnagar A

doi

10.1016/j.atherosclerosis.2011.01.001

subject

Has Abstract

pub_date

2011-04-01 00:00:00

pages

301-8

issue

2

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(11)00044-X

journal_volume

215

pub_type

杂志文章

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