目的了解我国成人饮水摄入量的情况,为进行饮水暴露途径的健康风险评价提供基础参数依据。方法于2015年冬夏两季,在我国南北两个城市针对18岁及以上的成人居民进行饮水摄入量调查,采用问卷调查和自填式日志相结合的方法获得饮水摄入情...目的了解我国成人饮水摄入量的情况,为进行饮水暴露途径的健康风险评价提供基础参数依据。方法于2015年冬夏两季,在我国南北两个城市针对18岁及以上的成人居民进行饮水摄入量调查,采用问卷调查和自填式日志相结合的方法获得饮水摄入情况。结果调查对象以饮用开水为主,只喝开水或以饮用开水为主的占95.9%;自来水是主要饮水来源(70.1%)。日均饮水摄入量中位数为1 869.5 m L,以直接摄入为主。饮水摄入量夏季高于冬季,男性高于女性。随着BMI指数升高,日均饮水摄入量有升高的趋势,BMI指数≥28的人群最高。体力劳动者日均饮水摄入量高于非体力劳动者。结论成人日均饮水摄入量受多种因素影响,在健康风险评价时应综合考虑我国的实际情况。展开更多
Background:Cervical cancer has the fourth highest incidence and mortality rate of all cancers in women worldwide;让seriously harms their physical and mental health.The aim of this study was to observe the roles and pr...Background:Cervical cancer has the fourth highest incidence and mortality rate of all cancers in women worldwide;让seriously harms their physical and mental health.The aim of this study was to observe the roles and preliminary mechanism of Taurine(Tau)-induced apoptosis in cervical cancer cells.Methods:Cells from the human cervical cancer cell line SiHa were transfected with the recombinant plasmid pEGFP-N1-MST1(mammalian sterile 20-like kinase 1);then,the cell proliferation activity was analyzed by the MTT assay,cell apoptosis by flow cytometry,and the related protein levels by Western blotting.Results:Tau inhibited the proliferation of SiHa cells and induced apoptosis in these cells(the apoptotic rate was 21.95%in the Tau 160 mmol/L group and 30%in the Tau 320 mmol/L group),upregulated the expression of the MST1(control,0.53;Tau 40-320 mmol/L groups,0.84-1.45)and Bax(control,0.45;Tau 40-320 mmol/L groups,0.64-1.51)proteins(P<0.01),and downregulated the expression of Bcl-2(control,1.28,Tau 40-320 mmol/L groups,0.93-0.47)(P<0.01).The overexpression of MST1 promoted the apoptosis of SiHa cells,enhanced the apoptosis-inductive effects of Tau(P<0.01),upregulated the expression of the proapoptotic proteins p73,p53,PUMA(p53 upregulated modulator of apoptosis),and caspase-3,and promoted the phosphorylation of YAP(Yes-associated protein).Conclusions:Tau inhibited the proliferation and induced the apoptosis of cervical cancer SiHa cells.The MST1 protein plays an important role in the Tau-induced apoptosis of cervical cancer cells.展开更多
文摘目的了解我国成人饮水摄入量的情况,为进行饮水暴露途径的健康风险评价提供基础参数依据。方法于2015年冬夏两季,在我国南北两个城市针对18岁及以上的成人居民进行饮水摄入量调查,采用问卷调查和自填式日志相结合的方法获得饮水摄入情况。结果调查对象以饮用开水为主,只喝开水或以饮用开水为主的占95.9%;自来水是主要饮水来源(70.1%)。日均饮水摄入量中位数为1 869.5 m L,以直接摄入为主。饮水摄入量夏季高于冬季,男性高于女性。随着BMI指数升高,日均饮水摄入量有升高的趋势,BMI指数≥28的人群最高。体力劳动者日均饮水摄入量高于非体力劳动者。结论成人日均饮水摄入量受多种因素影响,在健康风险评价时应综合考虑我国的实际情况。
基金the National Natural Science Foundation(No.81360032)Jiangxi Provincial Natural Science Foundation(No.20171BAB215059).
文摘Background:Cervical cancer has the fourth highest incidence and mortality rate of all cancers in women worldwide;让seriously harms their physical and mental health.The aim of this study was to observe the roles and preliminary mechanism of Taurine(Tau)-induced apoptosis in cervical cancer cells.Methods:Cells from the human cervical cancer cell line SiHa were transfected with the recombinant plasmid pEGFP-N1-MST1(mammalian sterile 20-like kinase 1);then,the cell proliferation activity was analyzed by the MTT assay,cell apoptosis by flow cytometry,and the related protein levels by Western blotting.Results:Tau inhibited the proliferation of SiHa cells and induced apoptosis in these cells(the apoptotic rate was 21.95%in the Tau 160 mmol/L group and 30%in the Tau 320 mmol/L group),upregulated the expression of the MST1(control,0.53;Tau 40-320 mmol/L groups,0.84-1.45)and Bax(control,0.45;Tau 40-320 mmol/L groups,0.64-1.51)proteins(P<0.01),and downregulated the expression of Bcl-2(control,1.28,Tau 40-320 mmol/L groups,0.93-0.47)(P<0.01).The overexpression of MST1 promoted the apoptosis of SiHa cells,enhanced the apoptosis-inductive effects of Tau(P<0.01),upregulated the expression of the proapoptotic proteins p73,p53,PUMA(p53 upregulated modulator of apoptosis),and caspase-3,and promoted the phosphorylation of YAP(Yes-associated protein).Conclusions:Tau inhibited the proliferation and induced the apoptosis of cervical cancer SiHa cells.The MST1 protein plays an important role in the Tau-induced apoptosis of cervical cancer cells.
