OBJECTⅣE This study aimed to investigate the role and mechanism of Astragaloside Ⅳ(AS-Ⅳ) in rats with myocardial infarction.METHODS The myocardial infarction model was established by ligation of the left anterior d...OBJECTⅣE This study aimed to investigate the role and mechanism of Astragaloside Ⅳ(AS-Ⅳ) in rats with myocardial infarction.METHODS The myocardial infarction model was established by ligation of the left anterior descending artery.The rats were randomly divided into sham,DMSO,model group,AS-Ⅳ and CID755673 groups.The rats were sacrificed 4 weeks later,and segmental heart samples were used for hematoxylin and eosin staining and masson staining.The expression of PKD1,HDAC5 and VEGF were analyzed using immunohistochemistry,reverse transcription poly.merase chain reaction and western blot.RESULTS Compared with the sham operation and DMSO groups,morphology of myocardium in model group was disordered,accompanied with necrotic myocar.dial cells and obvious collagen tissues.After treatment with AS-Ⅳ,the morphology of myocardium was obviously improved,and the number of new blood vessels increased significantly.However,after treatment with CID755673,the myocardial tissue of rats became disordered again,the necrotic cells increased,and some vessels closed.The expression levels of PKD1,HDAC5 and VEGF mRNA and protein in myocardial tissue of model group were significantly lower than the other four groups(P<0.05),whereas these levels in the AS-Ⅳ group were significantly higher than those in the other four groups(P<0.01).Additionally,the CID755673 group had significantly higher levels of PKD1,HDAC5 and VEGF mRNA and protein than the sham group,DMSO group and model group(P<0.05).CONCLUSION AS-Ⅳ may partly promote the angiogenesis of myocardial tissue in rats with myocardial infarction via the PKD1-HDAC5-VEGF pathway.展开更多
基金supported by National Natural Science Foundation of China(8147343881202791)+2 种基金 Science and Technology Project of Henan Province(162102310011) Key Research Projects of Henan Colleges and Universities(18B360011) Funding Scheme for the Young Backbone Teache
文摘OBJECTⅣE This study aimed to investigate the role and mechanism of Astragaloside Ⅳ(AS-Ⅳ) in rats with myocardial infarction.METHODS The myocardial infarction model was established by ligation of the left anterior descending artery.The rats were randomly divided into sham,DMSO,model group,AS-Ⅳ and CID755673 groups.The rats were sacrificed 4 weeks later,and segmental heart samples were used for hematoxylin and eosin staining and masson staining.The expression of PKD1,HDAC5 and VEGF were analyzed using immunohistochemistry,reverse transcription poly.merase chain reaction and western blot.RESULTS Compared with the sham operation and DMSO groups,morphology of myocardium in model group was disordered,accompanied with necrotic myocar.dial cells and obvious collagen tissues.After treatment with AS-Ⅳ,the morphology of myocardium was obviously improved,and the number of new blood vessels increased significantly.However,after treatment with CID755673,the myocardial tissue of rats became disordered again,the necrotic cells increased,and some vessels closed.The expression levels of PKD1,HDAC5 and VEGF mRNA and protein in myocardial tissue of model group were significantly lower than the other four groups(P<0.05),whereas these levels in the AS-Ⅳ group were significantly higher than those in the other four groups(P<0.01).Additionally,the CID755673 group had significantly higher levels of PKD1,HDAC5 and VEGF mRNA and protein than the sham group,DMSO group and model group(P<0.05).CONCLUSION AS-Ⅳ may partly promote the angiogenesis of myocardial tissue in rats with myocardial infarction via the PKD1-HDAC5-VEGF pathway.
