Objective To investigate the effects of puerarin(Pur)on myocardial perfusion and ventricular wall motion in patients with acute coronary syndrome(ACS).Methods Thirty-seven patients with ACS were randomly divided into ...Objective To investigate the effects of puerarin(Pur)on myocardial perfusion and ventricular wall motion in patients with acute coronary syndrome(ACS).Methods Thirty-seven patients with ACS were randomly divided into two groups:conventional treatment group(n=17,11 males,range of age:32-80 years,average age:60.9±4.9 years)and Pur treatment group(n=20,12 males,range of age:40-76 years,average age:62.7±3.5 years).Patients in the conventional treatment group received standard treatment according to the current guidelines,while patients in the Pur treatment group received intravenous administration of Pur(500 mg/day)for 10 days plus conventional treatment.Real-time myocardial contrast echocardiography(RT-MCE)was performed to evaluate the change in myocardial perfusion index(MPI)and ventricular wall motion index(VWMI)at admission and 10 days after treatment.Results At 10 days after treatment,MPI was significantly higher(P【0.01)and VWMI significantly lower(P【0.01)in the Pur group comparing with those in the conventional group.Conclusions Puerarin might improve myocardial microcirculation perfusion and ventricular wall motion in patients with ACS.展开更多
Background:Sarcoplasmic reticulum calcium ATPase 2a(SERCA2a)is a key protein that maintains myocardial Ca2+homeostasis.The present study aimed to investigate the mechanism underlying the SERCA2a-SUMOylation(small ubiq...Background:Sarcoplasmic reticulum calcium ATPase 2a(SERCA2a)is a key protein that maintains myocardial Ca2+homeostasis.The present study aimed to investigate the mechanism underlying the SERCA2a-SUMOylation(small ubiquitinlike modifier)process after ischemia/reperfusion injury(I/RI)in vitro and in vivo.Methods:Calcium transient and systolic/diastolic function of cardiomyocytes isolated from Serca2a knockout(KO)and wildtype mice with I/RI were compared.SUMO-relevant protein expression and localization were detected by quantitative real-time PCR(RT-qPCR),Western blotting,and immunofluorescence in vitro and in vivo.Serca2a-SUMOylation,infarct size,and cardiac function of Senp1 or Senp2 overexpressed/suppressed adenovirus infected cardiomyocytes,were detected by immunoprecipitation,triphenyltetrazolium chloride(TTC)-Evans blue staining,and echocardiography respectively.Results:The results showed that the changes of Fura-2 fluorescence intensity and contraction amplitude of cardiomyocytes decreased in the I/RI groups and were further reduced in the Serca2a KO+I/RI groups.Senp1 and Senp2 messenger ribose nucleic acid(mRNA)and protein expression levels in vivo and in cardiomyocytes were highest at 6 h and declined at 12 h after I/RI.However,the highest levels in HL-1 cells were recorded at 12 h.Senp2 expression increased in the cytoplasm,unlike that of Senp1.Inhibition of Senp2 protein reversed the I/RI-induced Serca2a-SUMOylation decline,reduced the infarction area,and improved cardiac function,while inhibition of Senp1 protein could not restore the above indicators.Conclusion:I/RI activated Senp1 and Senp2 protein expression,which promoted Serca2a-deSUMOylation,while inhibition of Senp2 expression reversed Serca2a-SUMOylation and improved cardiac function.展开更多
To the Editor:Myocardial ischemia/reperfusion injury(MI/RI)often causes death,dysfunction,or damage to the cardiomyocytes,and thus more effective clinical treatments are required.[1]MicroRNAs(miRNAs)bind to target mRN...To the Editor:Myocardial ischemia/reperfusion injury(MI/RI)often causes death,dysfunction,or damage to the cardiomyocytes,and thus more effective clinical treatments are required.[1]MicroRNAs(miRNAs)bind to target mRNAs to regulate post-transcriptional gene expression,with important effects on MI/RI by regulating critical molecular signaling pathways.展开更多
基金Jiangsu Bureau of Traditimal Chinese Medicine(No.H05105)
文摘Objective To investigate the effects of puerarin(Pur)on myocardial perfusion and ventricular wall motion in patients with acute coronary syndrome(ACS).Methods Thirty-seven patients with ACS were randomly divided into two groups:conventional treatment group(n=17,11 males,range of age:32-80 years,average age:60.9±4.9 years)and Pur treatment group(n=20,12 males,range of age:40-76 years,average age:62.7±3.5 years).Patients in the conventional treatment group received standard treatment according to the current guidelines,while patients in the Pur treatment group received intravenous administration of Pur(500 mg/day)for 10 days plus conventional treatment.Real-time myocardial contrast echocardiography(RT-MCE)was performed to evaluate the change in myocardial perfusion index(MPI)and ventricular wall motion index(VWMI)at admission and 10 days after treatment.Results At 10 days after treatment,MPI was significantly higher(P【0.01)and VWMI significantly lower(P【0.01)in the Pur group comparing with those in the conventional group.Conclusions Puerarin might improve myocardial microcirculation perfusion and ventricular wall motion in patients with ACS.
基金supported by grants from the Natural Science Foundation of Jiangsu Province(No.BK20190988)the Scientific Research Project of Jiangsu Health Committee(No.H2018005)+1 种基金the Key Research and Development Program of Xuzhou(No.KC20097)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX21_2671).
文摘Background:Sarcoplasmic reticulum calcium ATPase 2a(SERCA2a)is a key protein that maintains myocardial Ca2+homeostasis.The present study aimed to investigate the mechanism underlying the SERCA2a-SUMOylation(small ubiquitinlike modifier)process after ischemia/reperfusion injury(I/RI)in vitro and in vivo.Methods:Calcium transient and systolic/diastolic function of cardiomyocytes isolated from Serca2a knockout(KO)and wildtype mice with I/RI were compared.SUMO-relevant protein expression and localization were detected by quantitative real-time PCR(RT-qPCR),Western blotting,and immunofluorescence in vitro and in vivo.Serca2a-SUMOylation,infarct size,and cardiac function of Senp1 or Senp2 overexpressed/suppressed adenovirus infected cardiomyocytes,were detected by immunoprecipitation,triphenyltetrazolium chloride(TTC)-Evans blue staining,and echocardiography respectively.Results:The results showed that the changes of Fura-2 fluorescence intensity and contraction amplitude of cardiomyocytes decreased in the I/RI groups and were further reduced in the Serca2a KO+I/RI groups.Senp1 and Senp2 messenger ribose nucleic acid(mRNA)and protein expression levels in vivo and in cardiomyocytes were highest at 6 h and declined at 12 h after I/RI.However,the highest levels in HL-1 cells were recorded at 12 h.Senp2 expression increased in the cytoplasm,unlike that of Senp1.Inhibition of Senp2 protein reversed the I/RI-induced Serca2a-SUMOylation decline,reduced the infarction area,and improved cardiac function,while inhibition of Senp1 protein could not restore the above indicators.Conclusion:I/RI activated Senp1 and Senp2 protein expression,which promoted Serca2a-deSUMOylation,while inhibition of Senp2 expression reversed Serca2a-SUMOylation and improved cardiac function.
基金National Natural Science Foundation of China(No.81570326)Natural Science Foundation of Jiangsu Province(Nos.BK20141139,BK20190988)+1 种基金Jiangsu Commission of Health Foundation(No.H2018005)Key Research and Development program of Xuzhou(No.KC20097)
文摘To the Editor:Myocardial ischemia/reperfusion injury(MI/RI)often causes death,dysfunction,or damage to the cardiomyocytes,and thus more effective clinical treatments are required.[1]MicroRNAs(miRNAs)bind to target mRNAs to regulate post-transcriptional gene expression,with important effects on MI/RI by regulating critical molecular signaling pathways.
