Gastric cancer is the third leading cause of cancer-related mortality and remains a major global health issue^([1]).Annually,approximately 479,000individuals in China are diagnosed with gastric cancer,accounting for a...Gastric cancer is the third leading cause of cancer-related mortality and remains a major global health issue^([1]).Annually,approximately 479,000individuals in China are diagnosed with gastric cancer,accounting for almost 45%of all new cases worldwide^([2]).展开更多
Metal may affect maternal immune function,but few epidemiological studies have reported the associations between multiple-metal exposure and maternal immunoglobulin(Ig)levels.Based on the Hangzhou Birth Cohort Study,1...Metal may affect maternal immune function,but few epidemiological studies have reported the associations between multiple-metal exposure and maternal immunoglobulin(Ig)levels.Based on the Hangzhou Birth Cohort Study,1059 participants were included,and eleven metals in whole blood samples and serum IgA,IgG,IgE and IgM levels were measured.Linear regression,quantile-based g-computation(QGC),and Bayesian kernel machine regression(BKMR)models were used to evaluate the associations.Compared with the first tertile of metal levels,arsenic(As)was negatively associated with IgE(β=-0.25,95%confidence interval(CI)=-0.48 to-0.02).Moreover,significant associations of manganese(Mn)with IgA,IgG and IgM were demonstrated(β=0.10,95%CI=0.04 to 0.18;β=0.07,95%CI=0.03 to 0.12;β=0.10,95%CI=0.03 to 0.18,respectively).Cadmium(Cd)were associated with higher levels of IgM.QGC models showed the positive association of the metalmixtures with IgA and IgG,with Mn playing amajor role.Mn and Cd had positive contributions to IgM,while As had negative contributions to IgE.In the BKMR models,the latent continuous outcomes of IgA and IgG showed a significant increase when all the metals were at their 60th percentile or above compared to those at their 50th percentile.Therefore,exposure to metals was associated with maternal Igs,and mainly showed that Mn was associated with increased levels of IgA,IgG and IgM,and As was associated with low IgE levels.展开更多
Anemia is still prevalent among low and middle-income countries,posing serious family and social burdens.However,scarce studies provided evidence for real-world exposure to polycyclic aromatic hydrocarbons(PAHs)and an...Anemia is still prevalent among low and middle-income countries,posing serious family and social burdens.However,scarce studies provided evidence for real-world exposure to polycyclic aromatic hydrocarbons(PAHs)and anemia among pregnant women,as well as involved biological mechanisms.So,we conducted this study including 1717 late pregnant women fromZunyi Birth Cohort and collected urine samples for PAHs metabolites detection.Logistic regression and restricted cubic spline regression were used to examine exposuredisease risks and dose-response relationships.We conducted Bayesian kernel machine regression,weighted quantile sum regression,and quantile g-computation regression to fit the joint impacts of multiple PAHs in the real-world scenario on hypocalcemia and anemia.Results showed single exposure to 2-OHNap,2-OHFlu,9-OHFlu,1-OHPhe,2-OHPhe,3-OHPhe,and 1-OHPyr(all P-trend<0.05)increased the risks of hypocalcemia and anemia.Moreover,PAHs mixture was significantly related to higher risks of hypocalcemia and anemia,with 3-OHPhe and 1-OHPyr identified as their major drivers,respectively.Importantly,hypocalcemia served as a significant biological mechanism responsible for PAHs and anemia.Our findings suggest that individual and joint exposure to PAHs during late pregnancy elevate the anemia risk,and calcium supplementation might be a low-cost intervention target for reducing the PAHs-related impairment on anemia for pregnant women.展开更多
目的探讨铬酸盐职业接触人群全血中铬、铅、镉、锰水平与红细胞相关指标的关联。方法根据纳入排除标准,选择铬酸盐接触人群170人和非接触人群123人,收集研究对象的全血和基本信息,采用电感耦合等离子体质谱检测研究对象全血铬、铅、镉...目的探讨铬酸盐职业接触人群全血中铬、铅、镉、锰水平与红细胞相关指标的关联。方法根据纳入排除标准,选择铬酸盐接触人群170人和非接触人群123人,收集研究对象的全血和基本信息,采用电感耦合等离子体质谱检测研究对象全血铬、铅、镉和锰的浓度,使用血细胞自动分析仪测定全血中红细胞相关指标。运用加权分位数和回归(weighted quantile sum,WQS)、分位数g计算和贝叶斯核机器回归(Bayesian kernel machine regression,BKMR)分析全血血铬、铅、镉和锰水平与红细胞相关指标的关联。结果铬酸盐接触组人群的全血铬中位数[2.34(1.38,4.59)μg/L]和全血锰中位数[14.08(11.37,17.35)μg/L]显著高于对照组[1.01(0.71,1.94)μg/L]和[11.95(10.07,14.80)μg/L],两组人群全血铅和血镉无显著统计学差异。在控制年龄、性别、文化程度、BMI、吸烟及饮酒等混杂因素后,与对照组相比,接触组人群中红细胞计数(red blood cell count,RBC)、红细胞压积(hematocrit,HCT)以及红细胞体积分布宽度变异系数(coefficient variation of red blood cell volume distribution width,RDW-CV)升高(P<0.001),而平均血红蛋白量(mean corpuscular hemoglobin,MCH)、平均血红蛋白浓度(mean corpuscular hemoglobin concentration,MCHC)及红细胞分布宽度标准差(standard deviation in red cell distribution width,RDW-SD)显著降低(P<0.001)。WQS分析显示重金属总体水平与RBC、血红蛋白(hemoglobin,HGB)、HCT、红细胞平均体积(mean corpuscular volume,MCV)和RDW-CV呈整体正相关,其中锰的权重系数最大;分位数g计算和BKMR分析显示RBC和RDW-CV与重金属混合物总体水平呈正相关,而MCH和RDW-SD与重金属混合物总体水平呈负相关。分位数g计算分析显示重金属混合物中引起铬酸盐劳动者RBC增加的主要金属为铬;BKMR分析显示重金属混合物水平从第25个百分数上升到第75个百分数时,RBC增加了42.3%。结论铬酸盐职业接触可能引起劳动者体内多个红细胞相关指标出现紊乱,其主要原因可能与全血锰和血铬水平的升高有关。展开更多
基金supported by the Natural Science Foundation of Shanghai(23ZR1463600)Shanghai Pudong New Area Health Commission Research Project(PW2021A-69)Research Project of Clinical Research Center of Shanghai Health Medical University(22MC2022002)。
文摘Gastric cancer is the third leading cause of cancer-related mortality and remains a major global health issue^([1]).Annually,approximately 479,000individuals in China are diagnosed with gastric cancer,accounting for almost 45%of all new cases worldwide^([2]).
文摘目的 贝叶斯核机器回归(Bayesian kernel machine regression,BKMR)模型是近年快速发展的统计分析方法,本研究旨在介绍BKMR模型在多污染物暴露的健康效应研究中的应用及其在R语言的实现。方法 以美国国家环境健康科学研究所(National Institute of Environmental Health Sciences,NIEHS)公开的数据集为例,运用BKMR模型分析多污染物暴露对健康的影响,并基于R语言介绍其分析步骤。结果 依托R语言的“bkmr”程序包,BKMR模型可以探究暴露与健康的单暴露-反应关系,多种暴露之间的交互作用,估算单暴露的效应和多暴露物的联合效应。结论 BKMR模型可同时分析多污染物暴露与健康结局的暴露反应关系和健康效应,是研究复合环境暴露健康影响的一种新分析方法。
基金supported by the National Natural Science Foundation of China(No.U22A20358)Zhejiang Provincial Program for the Cultivation of High-Level Innovative Health Talents(No.2020-18).
文摘Metal may affect maternal immune function,but few epidemiological studies have reported the associations between multiple-metal exposure and maternal immunoglobulin(Ig)levels.Based on the Hangzhou Birth Cohort Study,1059 participants were included,and eleven metals in whole blood samples and serum IgA,IgG,IgE and IgM levels were measured.Linear regression,quantile-based g-computation(QGC),and Bayesian kernel machine regression(BKMR)models were used to evaluate the associations.Compared with the first tertile of metal levels,arsenic(As)was negatively associated with IgE(β=-0.25,95%confidence interval(CI)=-0.48 to-0.02).Moreover,significant associations of manganese(Mn)with IgA,IgG and IgM were demonstrated(β=0.10,95%CI=0.04 to 0.18;β=0.07,95%CI=0.03 to 0.12;β=0.10,95%CI=0.03 to 0.18,respectively).Cadmium(Cd)were associated with higher levels of IgM.QGC models showed the positive association of the metalmixtures with IgA and IgG,with Mn playing amajor role.Mn and Cd had positive contributions to IgM,while As had negative contributions to IgE.In the BKMR models,the latent continuous outcomes of IgA and IgG showed a significant increase when all the metals were at their 60th percentile or above compared to those at their 50th percentile.Therefore,exposure to metals was associated with maternal Igs,and mainly showed that Mn was associated with increased levels of IgA,IgG and IgM,and As was associated with low IgE levels.
基金supported by the Science&Technology Program of Guizhou Province(Nos.QKHPTRC-GCC[2022]039-1,QKHPTRC-CXTD[2022]014,and QKHHBZ[2020]3002)the Scientific Research Programof Guizhou Provincial Department of Education(No.QJJ[2023]019).
文摘Anemia is still prevalent among low and middle-income countries,posing serious family and social burdens.However,scarce studies provided evidence for real-world exposure to polycyclic aromatic hydrocarbons(PAHs)and anemia among pregnant women,as well as involved biological mechanisms.So,we conducted this study including 1717 late pregnant women fromZunyi Birth Cohort and collected urine samples for PAHs metabolites detection.Logistic regression and restricted cubic spline regression were used to examine exposuredisease risks and dose-response relationships.We conducted Bayesian kernel machine regression,weighted quantile sum regression,and quantile g-computation regression to fit the joint impacts of multiple PAHs in the real-world scenario on hypocalcemia and anemia.Results showed single exposure to 2-OHNap,2-OHFlu,9-OHFlu,1-OHPhe,2-OHPhe,3-OHPhe,and 1-OHPyr(all P-trend<0.05)increased the risks of hypocalcemia and anemia.Moreover,PAHs mixture was significantly related to higher risks of hypocalcemia and anemia,with 3-OHPhe and 1-OHPyr identified as their major drivers,respectively.Importantly,hypocalcemia served as a significant biological mechanism responsible for PAHs and anemia.Our findings suggest that individual and joint exposure to PAHs during late pregnancy elevate the anemia risk,and calcium supplementation might be a low-cost intervention target for reducing the PAHs-related impairment on anemia for pregnant women.
文摘目的探讨铬酸盐职业接触人群全血中铬、铅、镉、锰水平与红细胞相关指标的关联。方法根据纳入排除标准,选择铬酸盐接触人群170人和非接触人群123人,收集研究对象的全血和基本信息,采用电感耦合等离子体质谱检测研究对象全血铬、铅、镉和锰的浓度,使用血细胞自动分析仪测定全血中红细胞相关指标。运用加权分位数和回归(weighted quantile sum,WQS)、分位数g计算和贝叶斯核机器回归(Bayesian kernel machine regression,BKMR)分析全血血铬、铅、镉和锰水平与红细胞相关指标的关联。结果铬酸盐接触组人群的全血铬中位数[2.34(1.38,4.59)μg/L]和全血锰中位数[14.08(11.37,17.35)μg/L]显著高于对照组[1.01(0.71,1.94)μg/L]和[11.95(10.07,14.80)μg/L],两组人群全血铅和血镉无显著统计学差异。在控制年龄、性别、文化程度、BMI、吸烟及饮酒等混杂因素后,与对照组相比,接触组人群中红细胞计数(red blood cell count,RBC)、红细胞压积(hematocrit,HCT)以及红细胞体积分布宽度变异系数(coefficient variation of red blood cell volume distribution width,RDW-CV)升高(P<0.001),而平均血红蛋白量(mean corpuscular hemoglobin,MCH)、平均血红蛋白浓度(mean corpuscular hemoglobin concentration,MCHC)及红细胞分布宽度标准差(standard deviation in red cell distribution width,RDW-SD)显著降低(P<0.001)。WQS分析显示重金属总体水平与RBC、血红蛋白(hemoglobin,HGB)、HCT、红细胞平均体积(mean corpuscular volume,MCV)和RDW-CV呈整体正相关,其中锰的权重系数最大;分位数g计算和BKMR分析显示RBC和RDW-CV与重金属混合物总体水平呈正相关,而MCH和RDW-SD与重金属混合物总体水平呈负相关。分位数g计算分析显示重金属混合物中引起铬酸盐劳动者RBC增加的主要金属为铬;BKMR分析显示重金属混合物水平从第25个百分数上升到第75个百分数时,RBC增加了42.3%。结论铬酸盐职业接触可能引起劳动者体内多个红细胞相关指标出现紊乱,其主要原因可能与全血锰和血铬水平的升高有关。
