实验动物与比较医学 ›› 2018, Vol. 38 ›› Issue (3): 188-193.DOI: 10.3969/j.issn.1674-5817.2018.03.005

• 论著 • 上一篇    下一篇

大鼠放射性心脏损伤机制的比较医学意义

马金柯1, 高世乐2, 胡宗涛2, 王崇2, 高杉3, 董六一3, 刘阳2, 唐正中2   

  1. 1.解放军第105医院放疗中心,合肥 230031;
    2.解放军第105医院肿瘤三科,合肥 230031;
    3.安徽医科大学药理学教研室,合肥 230032
  • 收稿日期:2017-09-17 出版日期:2018-06-25 发布日期:2021-03-01
  • 作者简介:马金柯(1982-),男,本科。E-mail:majinke1982@163.com
  • 基金资助:
    南京军区面上项目(15MS049)

Comparative Medical Significance of Mechanism on Radiation Induced Heart Disease in Rats

MA Jin-ke1, GAO Shi-le2, HU Zong-tao2, WANG Chong2, GAO Shan3, DONG Liu-yi3, LIU Yang2, TANG Zheng-zhong2   

  1. 1. The Department of Pharmacology,105th Hospital of Chinese PLA,Hefei 230031,China;
    2. The Third Tumor Section,105th Hospital of Chinese PLA,Hefei 230031,China;
    3. The Department of Pharmacology,Anhui Medical University,Hefei 230032,China
  • Received:2017-09-17 Online:2018-06-25 Published:2021-03-01

摘要: 目的 探讨大鼠放射性心脏损伤(RIHD)模型的建立及观察不同时间点超声心动图、心电图及血清标志物的变化规律。方法 清洁级SD雄性大鼠90只, 随机分为正常对照组和照射组, 其中照射组分为5 Gy、10 Gy、20 Gy、30 Gy 4个不同剂量组, 每组18只,瓦里安直线加速器分别给予不同剂量照射心脏, 照射后2周、4周、12周末分批处死大鼠。处死前称量大鼠体质量, 超声测左心室射血分数(LVEF)、左心室收缩压(LVSP)、左心室舒张末压(LVEDP),记录心电图,酶联免疫法检测大鼠血清肌酸激酶同工酶(CKMB)、心肌肌钙蛋白I变化(CTnI),称取心脏质量。结果 同正常对照组比较, 照射组大鼠随照射剂量增加, LVEF、LVSP逐渐下降,LVEDP逐渐上升(P<0.05或P<0.01); 心电图随照射剂量增加, 心率加快, ST段抬高明显(P<0.05或P<0.01); 血清CKMB、CTnI值不同程度升高(P<0.05或P<0.01); 30 Gy组同20Gy组比较, 检测指标差异无统计学意义(P>0.05)。结论 单次20 Gy照射大鼠全心, 至第4周末, 发生大鼠RIHD, 模型制备成功。

关键词: 大鼠, 放射性心脏损伤(RIHD), 动物模型, 超声心动图, 心电图, 血清标志物

Abstract: Objective To investigate the model establishment about radiation induced heart (RIHD) in rat and observed the changes of echocardiography,electrocardiogram and serum biomarkers at different time points.Methods Ninety clean grade male SD rats were divided into normal control group and irradiation group randomly,the irradiation group was divided into four groups different dosage which 5Gy,10 Gy,20 Gy and 30 Gy,18 rats in each group,irradiate the heart with different dosage through varian linear accelerator,the rats were killed after irradiation on 2,4 and 12 weekend respectively.Weight of rat before euthanized,left ventricular ejection fraction (LVEF),left venteicular systolic pressuer (LVSP),left ventricular end diastolic pressure (LVEDP),electrocardiogram(ECG),serum creatine kinase isoenzyme-MB (CKMB),cardiactroponin Ⅰ (cTnI) and weight of whole heart are all detected with different tools.Results Compared with normal control group,with the irradiation dose increased,LVEF and LVSP decreased gradually in irradiation group.LVEDP rise gradually (P<0.05 or P<0.01).When the increase of irradiation dose,the heart rate increased and the ST segment elevated significantly (P<0.05 or P<0.01).Serum CKMB and CTnI increased in different degrees (P<0.05 or P<0.01),reach statistical significance.there were no significant differences in all the indenes between 30 Gy group and 20 Gy group (P>0.05),no statistical significance.Conclusions Radiation induced heart injury model was established on rat after four weeks irradiation at 22 Gy dosage.

Key words: Rat, Radiation induced heart disease (RIHD), Animal model, Echocardiography, Electrocardiogram, Serum marker

中图分类号: