首都医科大学学报 ›› 2010, Vol. 31 ›› Issue (5): 596-599.

• 基础研究 • 上一篇    下一篇

心力衰竭模型大鼠心脏肥厚指标与心功能的关系研究

马力1*, 刘杰2, 初楠3, 杨进刚3, 史旭波3, 王雅杰1, 李田昌3, 胡大一4   

  1. 1. 首都医科大学附属北京天坛医院心内科;2. 北京博爱医院心内科;3. 首都医科大学附属北京同仁医院心血管中心;4. 北京大学人民医院心脏中心
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-10-21 发布日期:2010-10-21
  • 通讯作者: 马力

The Relationship between Cardiac Hypertrophy Index and Cardiac Function in Chronic Heart Failure Rats

MA Li1*, LIU Jie2, CHU Nan3, YANG Jin-gang3, SHI Xu-bo3, WANG Ya-jie1, LI Tian-chang3, HU Da-yi4   

  1. 1. Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University; 2. Department of Cardiology, Beijing Boai Hospital; 3. Centre of Cardiology, Beijing Tongren Hospital, Capital Medical University; 4. Peking University, People's Hospital Heart Center
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-10-21 Published:2010-10-21
  • Contact: MA Li1

摘要:

目的 腹主动脉(abdominal aorta,AO)缩窄法建立大鼠慢性心力衰竭模型,比较多项指标在评价心脏肥厚中的意义及其与心功能的关系。方法 Wistar大鼠80只,分为手术组和对照组,比较术后第4、8、12和16周B型脑钠肽(type-B natriuretic peptide,BNP)及心脏肥厚指标的变化。结果 与对照组相比,大鼠腹主动脉缩窄术后4周,心肌细胞直径(cardiac myocardial diameter,CMD)、心脏重量指数、I型胶原浓度、BNP浓度显著升高(P<0.05)。术后8周-dp/dt降低。术后12周左室收缩末压(LVSP)升高,+dp/dt降低。术后16周上述改变更明显。BNP浓度与血流动力学和心脏肥厚指标相关性良好。结论 在腹主动脉缩窄法制备的大鼠慢性心力衰竭模型中,心肌细胞肥厚指标的改变出现早于心功能指标的改变。

关键词: 大鼠, 腹主动脉缩窄, 心力衰竭, 动物模型, 心肌肥厚

Abstract:

Objective To establish rat model of chronic heart failure by partially banding abdominal aorta for different time limits and to compare the effects of different index on the evaluation of cardiac hypertrophy and heart function. Methods Eighty Wistar rats were randomly divided into two groups: aortic banding group and sham-operated group(each containing 40 rats). Brain natriuretic peptide(BNP) concentration and cardiac hypertrophic changes were investigated in different groups. Results Cardiac myocardial diameter(CMD), type I collegen concentration and BNP concentration increased from 4 weeks after aortic banding(P<0.05) compared with sham-operated group. Eight weeks after the operation, -dp/dt decreased. LVSP increased from 12 weeks after the operation, and +dp/dt decreased at the same time. Changes above became more significant 16 weeks after the operation. There was a good correlation between BNP concentration and hemodynamic and hypertrophic parameters. Conclusion In the rat model of chronic heart failure by partially banding abdominal aorta, the changes of hypertrophic index emerge before the cardiac function changes.

Key words: rat, abdominal aortic banding, heart failure, animal model, cardiac hypertrophy

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