辛伐他汀对SHR心肌组织SOD、MDA、NOS、NO及心肌间质胶原含量的影响

被引:4
作者
高春恒
张平洋
朱向明
杨解人
汪峰
机构
[1] 皖南医学院附属弋矶山医院超声科
[2] 皖南医学院药理教研室
[3] 皖南医学院法医病理教研室 安徽芜湖
关键词
辛伐他汀; 自发性高血压大鼠; 心肌纤维化; 结构型一氧化氮合酶; 丙二醛; 超氧化物歧化酶;
D O I
10.16439/j.cnki.1673-7245.2004.06.016
中图分类号
R965 [实验药理学];
学科分类号
100602 ; 100706 ;
摘要
目的 观察辛伐他汀对自发性高血压大鼠 (SHR)心肌纤维化的影响。方法 2 0只 16周龄雄性SHR大鼠 ,随机分成 2组 :( 1)辛伐他汀组 (n =10辛伐他汀 2mg/kg·d) ;( 2 )SHR空白对照组 (n =10 ) ;( 3)同龄雄性正常血压WKY大鼠对照组 (n =10 )。给药 12周后称量大鼠左室重量并计算大鼠左室重量指数 ;测定心肌组织丙二醛、超氧歧化酶、一氧化氮及一氧化氮合酶 ;用改良VG染色法使胶原特殊染色 ,计算机图像分析测量心肌间质及心肌小动脉周围胶原的胶原容积分数对心肌纤维化程度进行比较。结果辛伐他汀组与SHR组相比心肌超氧歧化酶无明显改变、丙二醛明显减少而心肌一氧化氮及结构型一氧化氮合酶 (cNOS)活性明显升高 ;辛伐他汀组均未能有效降低SHR血压和左心室肥厚 (P <0 0 5 )但能使心室内、外膜及心肌小动脉周围的胶原减少。结论一氧化氮 /活性氧平衡失调可能是导致高血压心肌纤维化的又一个重要因素 ;辛伐他汀抗纤维化作用可能与其抗氧化作用及改善心肌cNOS活性密切相关
引用
收藏
页码:60 / 64
页数:5
相关论文
共 11 条
[1]  
Role of oxidative stress in myocardial hypertrophy and failure. Sawyer DB. Journal of Molecular and Cellular Cardiology . 2002
[2]  
Nitric oxide generating compounds inhibit total protein and collagen synthesis in cultured vascular smooth muscle cells. Kolpakov V,Gordon D,Kulik TJ. Circulation Research . 1995
[3]  
Activation of NADPH oxidase during progression of cardiac hypertrophy to failure. Li JM,Nick PG. Journal of Hypertension . 2002
[4]  
Further evidence for direct vascular actions of statins: effect on endothelial nitric oxide synthase and adhesion molecules. Mueck AO,Seeger H. Experimental and Clinical Endocrinology . 2001
[5]  
Pathological hypertrophy and cardiac interstitium. Weber KT,Brilla CG. Circulation . 1991
[6]  
Renin-angiotensin-aldosterone system and myocardial fibrosis. Brilla CG. Cardiovascular Research . 2000
[7]  
Effects of angiotensin infusion and inhibition of nitric oxide synthase on the rat aorta. Kato H,Hou J,Chobanian AV,et al. Journal of Hypertension . 1996
[8]  
Statins as antioxidant therapy for preventing cardiac myocyte hypertrophy. Masao Takemoto,Koichi Node,Hironori Nakagami. The Journal of Clinical Investigation . 2001
[9]  
Post transcriptional regulation of endothelial nitric oxide synthase mRNA stability by Rho GTPase. Laufs U,Liao JK. Journal of Biological Chemistry . 1998
[10]  
Increased activity of constitutive nitric oxide synthase in cardiac endothelium in spontaneous hypertension. Eduardo N,Georg N. Circulation . 1995