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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1. 中国中医科学院西苑医院中药药理北京市重点实验室,国家中医心血管疾病临床医学研究中心,北京 100091;2. 黑龙江中医药大学,哈尔滨 150040

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Establishment and evaluation of a rat model of coronary microvascular disease with qi deficiency and blood stasis syndrome
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1.Institute of Basic Medical Sciences of Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing Key Laboratory of Chinese Materia Pharmacology, National Clinical Research Center of Traditional Chinese Medicine for Cardiovascular Diseases, Beijing 100091, China. 2.Heilongjiang University of Chinese Medicine, Harbin 150040

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    摘要:

    目的 冠状动脉微血管疾病(coronary microvascular disease,CMVD)发病率逐年增高,中医认为CMVD 属中医学“络脉”的范畴,气虚血瘀证是CMVD 主要证型,然而目前尚无气虚血瘀证CMVD 动物模型的报道,因此本研究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疾病气虚血瘀证组,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疾病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 冠脉微血管疾病组与假手术组相比,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。冠脉微血管疾病气虚血瘀证组与假手术组相比,心功能下降、心肌损伤标志物活性显著升高、血浆及全血粘度明显升高。 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 The incidence of coronary microvascular disease ( CMVD) is increasing annually. According to traditional Chinese medicine (TCM), CMVD belongs to the category of “collaterals”, and qi deficiency and blood stasis are the main syndrome type of CMVD. Notably however, no studies have reported on the use of animal models of CMVD with qi deficiency and blood stasis. The current study therefore aimed to establish and evaluate a rat model of CMVD with qi deficiency and blood stasis syndrome. Methods Forty-five male SD rats were divided randomly into sham group, CMVD group, and CMVD + QXXY group (n= 15 rats per group). Rats in the CMVD + QXXY group were randomly deprived of sleep for 14 ~ 16 h/ day for 6 weeks, and the model of qi deficiency syndrome was established. Animals in the sham group and the CMVD group were fed normally for 6 weeks. After 6 weeks, rats in the CMVD and CMVD + QXXY groups were anesthetized, their chests were opened, and embolic microspheres (40 ~ 120 μm) were injected into the left ventricle. Rats in the sham group underwent thoracotomy without injection of embolic microspheres. On day 7 after operation, relevant detection indicators were measured in each group. Results Compared with the sham group, the CMVD group showed a significant decrease in left ventricular ejection fraction and left ventricular shortening rate, while the activities of creatine kinase MB isoenzyme ( CK-MB) and lactate dehydrogenase ( LDH) were significantly increased. Heart function, hemorheology, myocardial enzyme index, and the degree of myocardial cell damage differed significantly between the CMVD + QXXY group compared with the sham group. Conclusions A rat model of CMVD + qi deficiency + blood stasis syndrome can be successfully established by sleep deprivation combined with intraventricular injection of embolic microspheres. This model will be suitable for the study of the pathogenesis of CMVD and the mechanisms of TCM.

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康静,杨丽丽,王紫艳,尤越,史跃,马彦雷,孟红旭,李磊.冠状动脉微血管疾病气虚血瘀证大鼠模型的建立及评价[J].中国实验动物学报,2023,31(12):1530~1538.

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  • 收稿日期:2023-04-06
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  • 在线发布日期: 2024-01-25
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