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Article type: Research Article
Authors: Wan, Qianga; b; * | Liu, Zhong-yonga | Yang, Yu-pinga | Liu, Shi-mingb
Affiliations: [a] Department of Medical Cardiology, Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, China | [b] Institute of Cardiovascular Disease, Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
Correspondence: [*] Corresponding author: Qiang Wan. E-mail: wanqiang109559140@163.com.
Abstract: Background:Curcumin possesses significant anti-atherosclerosis properties. Lipocalin-2 (LCN2) is already known as one of the most promising biomarkers of atherosclerosis. However, research on the effect of curcumin on regulating LCN2 expression in atherogenesis is very limited. The aim of the study was to investigate whether curcumin could alleviate atherosclerosis in ApoE−/− mice by down-regulating LCN2 expression. Methods:Fifty apolipoprotein E knockout (ApoE−/−) mice were fed with a western diet for 12 weeks and randomly divided into five groups: model group (Mod), positive control group (Lov, with 30 mg/kg/d lovastatin), three curcumin groups (CurL, CurM and CurH, with 40, 60 and 80 mg/kg/d curcumin), while 10 C57BL/6J mice were fed with a standard mouse chow diet as a control group (Con). LCN2 in serum and aorta, biomarkers of serum lipid and inflammation were determined and the plaque area of the atherosclerosis lesions was quantified. Results:CurM and CurH group were significantly lower than Mod group in terms of serum LCN2, lipid and inflammatory cytokine levels, plaque area and LCN2 expression in atherosclerotic lesions, similar to lovastatin treatment. Conclusions:Our findings indicate that dietary curcumin ameliorates western diet-induced atherosclerosis in ApoE−/− mice, which is related to LCN2 down-regulation, anti-hyperlipidemia effect as well as the inhibition of inflammation.
Keywords: Curcumin, atherosclerosis, lipocalin-2 (LCN2), inflammation, anti-hyperlipidemia, apolipoprotein E knockout (ApoE−/−) mice
DOI: 10.3233/BME-161610
Journal: Bio-Medical Materials and Engineering, vol. 27, no. 6, pp. 577-587, 2016
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