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0.05].Sao and Eao was significantly different between CHD group and the control group,but Aao has not significant different.③Sao positively correlated with ascending aortic distensibility coefficient(D)(r=0.73,P=0.03),and negatively correlated with aortic stiffness(?)(r=-0.68,P=0.03).Conclusion:Elastic properties of the aorta can directly be assessed by measuring the movements in the upper wall of the aorta with DTI.Reduced aortic S-velocity is significantly correlated with Ascending aortic distensibility coefficient(D) and stiffness index beta(?),which are important factors in assessing the changes of the aortic distensibility.
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Objective To investigate the effect of pronuciferine on apoptosis of cultured human umbilical vein endothelium cells(HUVECs) induced by angiotensin Ⅱ(AngⅡ).Methods HUVECs cell line ECV304 was cultured in vitro,pretreated with Captopril(10 ?mol/L) or pronuciferine 10,1,0.1,0.01 ?mol/L for 30 min,respectively,then treated with AngⅡ(1 ?mol/L).Cell-morphosis was observed by light microscope.Cells viability was assessed by MTT assay.Production of nitric oxide(NO),activities of total nitric oxide synthase(tNOS),and inducible nitric oxide synthase(iNOS) were measured by colorimetry.Apoptosis rate was measured by Flow Cytometer(FCM).Results AngⅡ induced typical endothelial cell apoptosis and the apoptosis rates were significantly higher than those of the control group((P