冠状动脉微血管疾病气虚血瘀证大鼠模型的建立及评价
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中国中医科学院西苑医院

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Establishment and evaluation of a rat model of coronary microvascular disease with qi deficiency and blood stasis syndrome
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Institute of Basic Medical Sciences of Xiyuan Hospital

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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    目的 探索建立冠状动脉微血管疾病气虚血瘀证大鼠模型并进行评价。方法 雄性SD大鼠45只,随机分为假手术组、冠脉微血管疾病组和冠脉微血管气虚血瘀证组,每组15只。冠脉微血管疾病气虚血瘀证组动物每天随机14~16 h睡眠剥夺,持续6周,复制气虚证大鼠模型;假手术组及冠脉微血管疾病组动物正常饲养6周。实验6周后,冠脉微血管疾病组和冠脉微血管气虚血瘀证组大鼠麻醉后开胸,向左心室内注射栓塞微球(40~120 μm),假手术组动物行开胸手术但不注射栓塞微球。术后7 d,各组测定相关检测指标。结果 冠脉微血管疾病组可见微球栓塞于冠脉微血管,左室射血分数、左室缩短率明显降低,肌酸激酶MB 同工酶(CK-MB)以及乳酸脱氢酶(LDH)活性明显增加。冠脉微血管气虚血瘀证组心功能、血液流变学、心肌酶指标及心肌细胞损伤程度与假手术比较差异明显。结论 睡眠剥夺复合心室内注射栓塞微球可成功建立冠脉微血管疾病气虚血瘀证大鼠模型,比较符合临床发病特征适合于发病与中药作用机制研究。

    Abstract:

    Objective To explore the establishment and evaluation of a rat model of coronary microvascular disease with Qi deficiency and blood stasis syndrome. Methods 45 male SD rats were randomly divided into sham operation group, coronary microvascular disease group and coronary microvascular qi deficiency and blood stasis syndrome group, with 15 rats in each group. The rats in the group of coronary microvascular disease with Qi deficiency and blood stasis syndrome were randomly deprived of sleep for 14 to 16 hours every day for 6 weeks, and the model of Qi deficiency syndrome was established. The animals in the sham operation group and the coronary microvascular disease group were fed normally for 6 weeks. Six weeks after the experiment, rats in the coronary microvascular disease group and coronary microvascular qi deficiency and blood stasis syndrome group were anesthetized, and then opened their chest and injected embolic microspheres (40~120μm) into the left ventricle,The animals in the sham operation group underwent thoracotomy without injection of embolic microspheres. On the 7th day after operation, relevant detection indicators were measured in each group. Results In the group of coronary microvascular disease, microsphere embolism was found in coronary microvascular, left ventricular ejection fraction and left ventricular shortening rate were significantly decreased, and the activities of creatine kinase MB isoenzyme (CK-MB) and lactate dehydrogenase (LDH) were significantly increased. The heart function, hemorheology, myocardial enzyme index and the degree of myocardial cell damage in the coronary microvascular Qi deficiency and blood stasis syndrome group were significantly different from those in the sham operation group. Conclusion Sleep deprivation combined with intraventricular injection of embolic microsphere can successfully establish a rat model of coronary microvascular disease with qi deficiency and blood stasis syndrome, which is more suitable for the study of pathogenesis and mechanism of traditional Chinese medicine

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  • 收稿日期:2023-04-06
  • 最后修改日期:2023-11-13
  • 录用日期:2023-11-14
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