摘要
OBJECTIVE:To investigate the protective effects of Shexiang Tongxin dropping pill(麝香通心滴丸,STDP)in a rat model of coronary microcirculatory dysfunction(CMD).METHODS:Sprague-Dawley rats were allocated randomly into four groups:sham,CMD model,STDP,and nicorandil.After 4 weeks of treatment,CMD was induced by injection of sodium laurate(0.2 m L,2 g/L)into the left ventricle while obstructing the ascending aorta.Rats in the sham group underwent an identical surgical procedure but were administered physiological(0.9%)saline(0.2 m L).Twenty-four hours after surgery,blood samples were collected for biochemical analyses and enzyme-linked immunosorbent assays.Heart tissues were removed for histopathology staining;apoptosis and inflammatory cytokines were examined by Western blotting.RESULTS:The STDP group had a lower level of creatine kinase-myocardial band,lactate dehydrogenase,and cardiac troponin-I than that in the CMD model group.Infiltration of inflammatory cells,myocardial ischaemia,and microthrombosis were relieved in the STDP group compared with CMD model group.Levels of endothelin-1,nuclear factor-kappa B,tumour necrosis factor-α,interleukin-6,interleukin-1β,malondialdehyde,B-cell lymphoma(Bcl)-2-associated X protein,and caspase-3 were lower,and levels of nitric oxide,Bcl-2,and superoxide dismutase were higher,in the STDP group in comparison with the CMD model group.CONCLUSION:STDP pretreatment improved the CMD induced by sodium laurate via anti-inflammatory,anti-apoptosis,and anti-oxidant mechanisms.
基金
Supported by Zhejiang Medicine and Technology Plan(No.2018KY827)
Zhejiang TCM Science and Technology Plan(No.2018ZB130)-funded Project the Study of the Protective Effects of Shexiang Tongxin dropping pill on Coronary Microcirculatory Dysfunction。
