http://jcps.bjmu.edu.cn

• 研究论文 • 上一篇    下一篇

降钙素基因相关肽预处置对阿霉素所致离体大鼠心脏损伤的保护作用

杨栋梁, 汤聿海, 李元建, 彭长福, 熊小明   

  1. 湖南医科大学药理教研室, 长沙 410078
  • 收稿日期:1996-01-26 修回日期:1996-06-20 出版日期:1996-09-15 发布日期:1996-09-15

Protection of Calcitonin Gene-Related Peptide-Induced Preconditioning against Myocardial Injury due to Adriamycin in the Isolated Rat Heart

Dong-Liang Yang, Yu-Hai Tang, Yuan-Jian Li, Chang-Fu Peng, Xiao-Ming Xiong   

  1. Department of Pharmacology; Hunan Medical University; Changsha 410078
  • Received:1996-01-26 Revised:1996-06-20 Online:1996-09-15 Published:1996-09-15

摘要: 在离体灌流大鼠心脏研究了降钙素基因相关肽 (CGRP) 预处置对阿霉素所致心肌 损伤的保护作用。阿霉素 (100 200 mol/L) 导致冠脉流量减少, 心脏功能降低和丙二醛 (MDA ) 含量的升高。CGRP (5 nmol/L) 灌流预处置 5分钟能增加冠脉流量, 改善心脏功能及 抑制MDA 的升高。这些结果提示: CGRP 预处置对阿霉素所致的心脏损伤具有保护作用, 其保 护作用可能与抑制脂质过氧化有关。

关键词: 降钙素基因相关肽, 预处置, 阿霉素, 大鼠, 心脏

Abstract: The protective effect of calcitonin gene-related peptide (CGRP)-induced preconditioning on myocardial injury due to adriamycin was studied in the isolated perfused rat heart. Adriamycin (100 and 200 (mol/L) caused a gradual decrease in coronary flow (CF) and cardiac function (LVP and LV dp/dtmax), and an increase in the level of MDA. Pretreatment with CGRP at the concentration of 5 nmol/L for 5 min markedly reduced the attenuation of CF and cardiac function and inhibited the elevation of MDA content induced by adriamycin. The findings suggest that the pretreatment with CGRP possesses a protection against myocardial injury elicited by adriamycin. The present results also suggest that the protection of CGRP may be related to a reduction in lipid peroxidation.

Key words: Calcitonin gene-related peptide, Preconditioning, Adriamycin, Rat Heart

Supporting: *Supported by a grant from the National Education Commission.
**Reprint requests: Professor Yuan-Jian Li