共 39 条
Rosuvastatin restores superoxide dismutase expression and inhibits accumulation of oxidized LDL in the aortic arch of obese dyslipidemic mice
被引:39
作者:

Verreth, W.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

De Keyzer, D.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Davey, P. C.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Geeraert, B.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Mertens, A.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Herregods, M-C
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Smith, G.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Desjardins, F.
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Balligand, J-L
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机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium

Holvoet, P.
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h-index: 0
机构: Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium
机构:
[1] Katholieke Univ Leuven, Dept Cardiovasc Dis, Atherosclerosis & Metab Unit, B-3000 Louvain, Belgium
[2] Katholieke Univ Leuven, Dept Cardiovasc Dis, Div Cardiol, Louvain, Belgium
[3] AstraZeneca, Macclesfield, Cheshire, England
[4] Catholic Univ Louvain, Dept Med, Unit Pharmacol & Therapeut, B-3000 Louvain, Belgium
关键词:
atherosclerosis;
cholesterol;
lipoproteins;
metabolic syndrome;
obesity;
superoxide dismutase;
D O I:
10.1038/sj.bjp.0707231
中图分类号:
R9 [药学];
学科分类号:
1007 ;
摘要:
Background and purpose: Our goal was to elucidate mechanisms of the inhibitory effect of rosuvastatin on the accumulation of plaque oxidized low density lipoproteins (oxLDL) and on plaque volume, without lowering cholesterol, in mice with combined leptin and LDL-receptor deficiency (DKO). Experimental approach: Twelve-week old DKO mice were treated with rosuvastatin ( 10 mg kg (-1) day(-1), s. c.) or placebo or no treatment for 12 weeks. The effect on blood variables, aortic plaque volume and composition and gene expression in the aorta and in THP-1 cells was assessed. Key results: Rosuvastatin lowered free fatty acids ( FFA), triglycerides, and increased insulin sensitivity, without affecting cholesterol. Rosuvastatin lowered the plaque volume, inhibited macrophage, lipid and oxLDL accumulation, and decreased the oxLDL- to- LDL ratio of plaques in the aortic arch. It increased superoxide dismutase 1 ( SOD1), CD36, LXR-alpha, ABCA-1 and PPAR-gamma RNA expression in aortic extracts. SOD1 was the strongest inverse correlate of oxLDL. In THP-1 macrophages and foam cells, expression of SOD1 was lower than in THP-1 monocytes. Rosuvastatin restored expression of SOD1 in THP-1 macrophages and foam cells. Conclusions and Implications: Rosuvastatin restored SOD1 expression in THP-1 macrophages and foam cells in vitro and in the aorta of DKO mice. The latter was associated with less oxLDL accumulation within atherosclerotic plaques and inhibition of plaque progression. This effect was obtained at a dose not affecting cholesterol levels but improving insulin sensitivity. SOD1 is a potentially important mediator of the prevention of oxLDL accumulation within atherosclerotic plaques. British Journal of Pharmacology ( 2007).
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页码:347 / 355
页数:9
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