Abstract
Objective
To investigate the effect of Chinese compound Shensong Yangxin Capsule (参松养心 胶囊, SSYX) on myocardial microcirculation in myocardial-infarcted rabbits.
Methods
Myocardial infarction (MI) was established in rabbits by ligation of the left circumflex coronary. Thirty rabbits were randomly divided into the control group, the MI group (model), and the MI treated with SSYX group (MI+SSYX) by a random number table method. After 4 weeks of administration, low-energy real-time myocardial contrast echocardiography (RT-MCE) was conducted to assess the microcirculatory perfusion. Immunofluorescence double staining was used to detect the capillary density. The endothelial ultrastructure was observed with a transmission electron microscope. The mRNA expression levels of vascular endothelial growth factor (VEGF), endothelin 1 (ET-1), prostaglandin I2 (PGI2) and endothelial nitric oxide synthase (eNOS) were measured by real-time quantitative polymerase chain reaction (Real-time PCR). The plasmic levels of ET-1, thromboxane A2 (TXA2), nitric oxide (NO) and von willebrand factor (vWF) were examined with enzyme-linked immunosorbent assays (ELISA).
Results
SSYX significantly improved the myocardial blood volume, myocardial micro bubble velocity, and myocardial inflow according to the examination of RT-MCE, and it visibly ameliorated the capillary endothelial structure. Furthermore, compared with the MI group, the plasma levels of TXA2, ET-1 and vWF contents significantly decreased in the MI+SSYX group, and the ET-1 mRNA expression levels of myocardium in the border zone significantly decreased, and the VEGF, PGI2 and eNOS mRNA expression levels significantly increased (all P<0.05).
Conclusions
SSYX has favorable advantages in ameliorating the impaired myocardial microcirculation following MI. The mechanisms of the effect are related to the ability of SSYX in balancing the endothelial-derived vasodilators and vasoconstrictors, and up-regulating the expression of VEGF and eNOS.
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Supported by the National Key Basic Research Development Program of China (The “973” Program, No. 2012CB518604)
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Jiang, C., Wang, X., Dang, S. et al. Chinese Medicine Shensong Yangxin Capsule (参松养心胶囊) Ameliorates Myocardial Microcirculation Dysfunction in Rabbits with Chronic Myocardial Infarction. Chin. J. Integr. Med. 27, 24–30 (2021). https://doi.org/10.1007/s11655-018-2578-1
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DOI: https://doi.org/10.1007/s11655-018-2578-1