Background The prevalence of metabolic syndrome （MetS） increased recently and there was still not a screening index to predict MetS.The aim of this study was to estimate whether brachial-ankle pulse wave velocity （...Background The prevalence of metabolic syndrome （MetS） increased recently and there was still not a screening index to predict MetS.The aim of this study was to estimate whether brachial-ankle pulse wave velocity （baPVVV）,a novel marker for systemic arterial stiffness,could predict MetS in Chinese community population.Methods A total of 2 191 participants were recruited and underwent medical examination including 1 455 men and 756 women from June 2011 to January 2012.MetS was diagnosed according to the criteria of the International Diabetes Federation （IDF）.Multiple Logistic regressions were conducted to explore the risk factors of MetS.Receiver operating characteristic （ROC） curve was performed to estimate the ideal diagnostic cutoff point of baPWV to predict MetS.Results The mean age was （45.35±8.27） years old.In multiple Logistic regression analysis,the gender,baPWV and smoking status were risk factors to MetS after adjusting age,gender,baPWV,walk time and sleeping time.The prevalence of MetS was 17.48% in 30-year age population in Shanghai.There were significant differences （Х^2=96.46,P 〈0.05） between male and female participants on MetS prevalence.According to the ROC analyses,the ideal cutoff point of baPWV was 1 358.50 cm/s （AUC=60.20%） to predict MetS among male group and 1 350.00 cm/s （AUC=70.90%） among female group.Conclusion BaPWV may be considered as a screening marker to predict MetS in community Chinese population and the diagnostic value of 1 350.00 cm/s was more significant for the female group.展开更多
文摘目的 本研究拟通过体外实验研究槲皮素(Quercetin,QCT)与AC16心肌细胞增殖的关系,探析QCT阻止AC16心肌细胞增殖作用与Wnt/β-catenin信号通路的关系。方法 选用不同浓度QCT对AC16细胞进行干预,使用倒置显微镜拍照观察法、台盼蓝计数法和CCK-8法检测QCT对AC16细胞增殖的影响。Western blot检测QCT对磷酸化-β-连环蛋白(Phosphorylated β-catenin,p-β-catenin)、细胞性骨髓瘤样癌基因(c-Myc)、β-连环蛋白(β-catenin)、低密度脂蛋白受体相关蛋白5(Low density lipoprotein receptor-related protein 5,LRP5)和低密度脂蛋白受体相关蛋白6(Low density lipoprotein receptor-related protein 6,LRP6)表达的影响。台盼蓝计数法检测过表达β-catenin ΔN、LRP5和LRP6基因后研究QCT对细胞增殖的影响以及沉默LRP5和LRP6基因后研究QCT对细胞增殖的影响。结果 与对照组比,QCT使得AC16细胞活细胞数下降,抑制增殖率,且具有浓度依赖性。条件摸索显示10和20μmol/L的QCT会导致AC16细胞中p-β-catenin蛋白修饰水平显著增加(P<0.05),c-Myc、β-catenin、LRP5和LRP6蛋白表达水平显著下调(P<0.05),因此后续实验选择10μmol/L的QCT作为干预浓度。而AC16细胞中过表达β-catenin ΔN、LRP5和LRP6基因,与单独给药组相比,过表达相关基因后10μmol/L的QCT引起的细胞增殖抑制现象被有效逆转(P<0.05)。另外,沉默LRP5和LRP6再联合10μmol/L的QCT干预,AC16细胞的增殖抑制并未产生协同现象(P>0.05)。结论 QCT可以通过下调LRP5/6表达以抑制Wnt/β-catenin信号通路从而发挥其阻止AC16心肌细胞增殖的作用。
基金This work was supported by grants from the National Natural Science Foundation of China （No. 81170325）, International S＆T Cooperation Program of China （No. 2011DFB30010）.Acknowledgements： We are grateful to all subjects for their enthusiastic participation. We are also indebted to Xiu Jianfeng and Wu Lezou for their pioneering work.
文摘Background The prevalence of metabolic syndrome （MetS） increased recently and there was still not a screening index to predict MetS.The aim of this study was to estimate whether brachial-ankle pulse wave velocity （baPVVV）,a novel marker for systemic arterial stiffness,could predict MetS in Chinese community population.Methods A total of 2 191 participants were recruited and underwent medical examination including 1 455 men and 756 women from June 2011 to January 2012.MetS was diagnosed according to the criteria of the International Diabetes Federation （IDF）.Multiple Logistic regressions were conducted to explore the risk factors of MetS.Receiver operating characteristic （ROC） curve was performed to estimate the ideal diagnostic cutoff point of baPWV to predict MetS.Results The mean age was （45.35±8.27） years old.In multiple Logistic regression analysis,the gender,baPWV and smoking status were risk factors to MetS after adjusting age,gender,baPWV,walk time and sleeping time.The prevalence of MetS was 17.48% in 30-year age population in Shanghai.There were significant differences （Х^2=96.46,P 〈0.05） between male and female participants on MetS prevalence.According to the ROC analyses,the ideal cutoff point of baPWV was 1 358.50 cm/s （AUC=60.20%） to predict MetS among male group and 1 350.00 cm/s （AUC=70.90%） among female group.Conclusion BaPWV may be considered as a screening marker to predict MetS in community Chinese population and the diagnostic value of 1 350.00 cm/s was more significant for the female group.
