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タイトル: | Carvedilol reduces the severity of atherosclerosis in apolipoprotein E-deficient mice via reducing superoxide production. |
著者: | Shimada, Kana Hirano, Emi Kimura, Takeshi Fujita, Masatoshi Kishimoto, Chiharu |
著者名の別形: | 岸本, 千晴 |
キーワード: | atherosclerosis β-blocker free radical carvedilol superoxide |
発行日: | Sep-2012 |
出版者: | Royal Society of Medicine Press Ltd |
誌名: | Experimental biology and medicine |
巻: | 237 |
号: | 9 |
開始ページ: | 1039 |
終了ページ: | 1044 |
抄録: | It has been shown that oxidative stress may play an important role in the development of atherosclerosis, and carvedilol has the capacity of reducing oxidative stress. Accordingly, we assessed the hypothesis that carvedilol may reduce the severity of atherosclerosis in apolipoprotein E (apoE)-deficient mice in addition to its hemodynamic effects. Atherosclerosis was induced in apoE-deficient mice fed a high-fat diet containing 0.3% cholesterol. Mice were orally treated with propranolol (30 mg/kg/day), metoprolol (75 mg/kg/day) and carvedilol (10 mg/kg/day) over eight weeks (each group n = 7-9). Fatty streak plaque developed in apoE-deficient mice, and was suppressed in mice treated with all three drugs. The accumulation of macrophages and expression of CD4(+) and CD8(+) cells in the lesions were decreased by the treatment of the drugs, of which carvedilol was the most effective. In addition, carvedilol reduced superoxide production in aortic walls detected by ethidium staining. There were no significant changes in blood pressure among the study groups. The heart rates in the treated groups were decreased by 4%-12% compared with the control group, with carvedilol yielding the highest suppression of heart rate. The β-blocker treatment did not significantly modify the serum lipid profiles. Carvedilol may suppress atherosclerosis via reducing superoxide production, in addition to the hemodynamic modifications in this animal model. |
著作権等: | © 2012 by the Society for Experimental Biology and Medicine この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/160404 |
DOI(出版社版): | 10.1258/ebm.2012.012022 |
PubMed ID: | 22946091 |
出現コレクション: | 学術雑誌掲載論文等 |
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