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• 基础医学 • 上一篇    下一篇

磁场作用下急性心肌梗塞大鼠心肌病理改变及相关自由基的变化

赵 锐1,郭彩霞2,初 秋1, 杨春玫1,赵福弟3   

  1. 1. 北华大学医学院生物化学教研室,吉林 吉林132013; 2. 吉林大学中日联谊医院护理部,吉林 长春130033;3. 北华大学医学院病理学教研室,吉林 吉林132013
  • 收稿日期:2007-11-13 修回日期:1900-01-01 出版日期:2008-07-28 发布日期:2008-07-28
  • 通讯作者: 赵 锐

Changes of myocardium pathology and free radicals in experimental AMI  rats treated with magnetic field

ZHAO Rui1, GUO Cai-xia2,CHU Qui1,YANG Chun-mei1,ZHAO Fu-di3   

  1. 1. Department of Biochemistry, School of Basic Medical Sciences, Beihua University, Jilin 132013,China;2. Department of Nursing,China-Japan Union Hospital, Jilin Univereity,Changchun 130033,China;3. Department of Pathology, School of Basic Medical Sciences, Beihua University, Jilin 132013, China
  • Received:2007-11-13 Revised:1900-01-01 Online:2008-07-28 Published:2008-07-28
  • Contact: ZHAO Rui

摘要: 目的:探讨磁场对急性心肌梗塞(AMI)大鼠心肌的保护作用。方法:将大鼠随机分为空白对照组、磁场对照组、AMI组、AMI药物(心得安)治疗组和AMI磁场治疗组。采用黄嘌呤氧化酶法、硫代巴比妥酸(TBA)、虫荧光素酶法及放射免疫法检测实验性大鼠红细胞超氧化物歧化酶(SOD)、血浆丙二醛(MDA)、心肌三磷酸腺苷(ATP)含量及血浆环磷酸腺苷(cAMP)、环磷酸鸟苷(cGMP)及心肌梗塞范围(IS),并对病理形态学、心电图进行观察。结果:AMI磁场治疗组红细胞SOD、心肌ATP明显高于AMI组(P<0.01),与药物治疗组比较差异无显著性(P>0.05)。AMI组血浆MDA、cAMP、cGMP含量明显高于空白对照组及磁场对照组(P<0.01),AMI磁场治疗组与药物治疗组明显低于AMI组(P<0.01)。光学显微镜观察结果表明,AMI组心肌梗塞处肉芽组织增生,未见明显瘢痕形成,磁场治疗组心肌梗塞处可见部分瘢痕形成。AMI磁场治疗组IS明显低于AMI组(P<0.05),AMI组ST段偏移和T波倒置出现率明显高于药物治疗组和磁场治疗组( P<0.05)。结论:磁场能减少AMI大鼠IS、ST段偏移和T波倒置出现率,有利于梗塞处修复;能降低AMI大鼠血浆MDA、cAMP及cGMP的含量,增加红细胞SOD含量及心肌ATP含量,对心肌具有保护作用。  

关键词: 急性心肌梗塞, 心肌梗塞范围, 超氧化物歧化酶, 丙二醛 , 三磷酸腺苷, 环磷酸腺苷, 环磷酸鸟苷

Abstract: Objective To study the protective effect of magnetic field on acute myocardial infarction (AMI) rats. Methods The rats were randomly divided into 5 group: blank control group (Ⅰ),magnetic field control group (Ⅱ),AMI group (Ⅲ),AMI drug (propranolol) group (Ⅳ) and AMI magnetic field group(Ⅴ) . The SOD in RBC,plasma MDA,ATP content in myocardium,cAMP and cGMP in plasma and infarction scope(IS)were determined with xanthine oxidase,thiobarbituric acid,firefly luciferase and radioimmunological technique. Results The  SOD in RBC and ATP myocardium in group Ⅴ were higher than that in group Ⅲ(P<0.01),but there was no signficant difference compared with group Ⅳ(P>0.05).The contents of plasma MDA,cAMP,cGHP in group Ⅲ were obvionsly higher than those in group Ⅰ and Ⅱ(P<0.01).Gruanulation tissue hyperplasia in myocardial infarction was found in group Ⅲ,but no obvious cicatrices.In group Ⅴ,some cicatrices were observed.The IS in group Ⅴ was lower than that in group Ⅲ (P<0.05),ST segment deflection and inverted T wave in group Ⅲ were higher than those in group Ⅳ and group Ⅴ(P<0.05).Conclusion Magnetic field can reduce the IS,ST segment deflection and inverted T wave,decrease the contents of plasma MDA,cAMP and cGMP,and increase the contents of SOD in RBC and ATP in myocardium in AMI rats.It has protective effect on myocardium.

Key words: acute myocardial infarction, infarction scope, superoxide dismutase, malondiadehyde, adenosine triphosphate, cyclic adenosine monophosphate, cyclic guanosine monophosphate

中图分类号: 

  • R542.2