砷暴露人群的砷甲基化水平及其影响因素的Meta分析  被引量:12

Factors affecting arsenic methylation in arsenic-exposed humans: a systematic review and Meta-analysis

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作  者:申卉[1] 李述刚[1] 牛强[1] 徐孟川[1] 芮东升[1] 徐上知[1] 冯刚玲[1] 丁玉松[1] 

机构地区:[1]石河子大学医学院预防医学系,石河子832000

出  处:《中华地方病学杂志》2016年第12期869-874,共6页Chinese Journal of Endemiology

基  金:国家自然科学基金(81560517);兵团应用基础项目(2015AG014);兵团重点领域科技攻关项目(2014BA039)

摘  要:目的探讨砷暴露对机体砷甲基化代谢水平的调控及其影响因素,为研究砷甲基化代谢在砷毒性机制中的作用提供参考。方法由两名研究者共同进行Meta分析,通过数据库Cochranelibrary、Pubmed、Springer、Embase、中国知网(CNKI)检索,最终纳人符合标准的文献25篇,根据异质性检验结果,采用随机效应模型或固定效应模型进行综合的定量分析。结果砷暴露人群尿液中砷代谢物含量:无机砷[iAs:标准化均数差(SMD):1.07;95%置信区间(CI):0.61—1.53]、一甲基砷酸(MMA;SMD:1.10;95%CI:0.81-1.40)、二甲基砷酸(DMA;SMD:2.50;95%CI:1.50—3.69)、总砷(TAs;SMD:3.10;95%CI:2.13—4.07)均明显增加(P均〈0.01)。砷代谢物比例指标:iAs%(SMD:1.00;95%CI:0.60-1.40)、MMA%(SMD:0.49;95%CI:0.21-0.77)均明显升高,DMA%(SMD:-0.55;95%CI:-0.80--0.31)明显下降(P均〈0.01)。甲基率指标:一甲基率(PMI;SMD:-0.57;95%CI:-0.94--0.20)、二甲基率(SMI;SMD:-0.27;95%CI:-0.46--0.09)均明显下降(P均〈0.01)。与女性比较,男性尿砷中MMA%(SMD:0.44;95%CI:0.35-0.52)明显升高,DMA%(SMD:-0.33:95%CI:-0.38--0.28)、SMI(SMD:-0.36;95%CI:-0.53--0.19)明显降低;与非吸烟者比较,吸烟者MMA%(SMD:0.22;95%CI:0.07-0.37)明显升高,DMA%(SMD:-0.16;95%CI:-0.26--0.05)明显降低;与非饮酒者比较,饮酒者MMA%(SMD:0.17;95%CI:0.07-0.27)明显升高,DMA%(SMD:-0.24;95%CI:-0.39--0.10)明显降低;与〉50岁者比较,≤50岁者MMA%(SMD:-0.23;95%CI:-0.40--0.06)明显降低;体质指数(BMI)明显影响MMA%(SMD:-0.18;95%CI:-0.3l—-0.04),差异有统计学意义(P均〈0.01)。结论砷Objective To explore the regulation and effect factors of arsenic expose and arsenic methylation level, then to provide a reference for study the function of arsenic metabolism in a arsenic poisoning process. Methods A meta-analysis was performed by two researchers. Twenty-five papers satisfying our priori eligibility criteria were included by searching Cochrane library, Pubmed, Springer, Embase and China National Knowledge Inf:astructure. Based on the results of heterogeneity, a random or fixed effects model was chosen for the meta-analysis. Results The results showed that the following arsenic metabolites increased (all P 〈 0.01) following arsenic exposure: inorganic arsenic [iAs; standardized mean difference (SMD): 1.07; 95% confidence interval (CI): 0.61 - 1.53)], monomethyl arsenic (MMA; SMD: 1.10; 95% CI: 0.81 - 1.40), dimethyl arsenic (DMA; SMD: 2.50; 95% CI: 1.50 -- 3.69), and total arsenic (TAs, SMD: 3.10; 95% CI: 2.13 - 4.07). Additionally, the percentages of iAs (iAs%; SMD: 1.00; 95% CI: 0.60 - 1.40) and MMA (MMA%; SMD: 0.49; 95% CI: 0.21 - 0.77) also increased, while the percentage of DMA (DMA%; SMD: - 0.55; 95% CI: - 0.80 - - 0.31) decreased (P 〈 0.01). The primary methylation index (PMI; SMD: - 0.57; 95% CI: - 0.94 - - 0.20), and secondary methylation index (SMI;SMD: - 0.27; 95% CI: - 0.46 - - 0.09) decreased (all P 〈 0.01). Compared to female, male had higher MMA% (SMD: 0.44; 95% CI: 0.35 - 0.52), lower DMA% (SMD: - 0.33; 95% CI: - 0.38 - - 0.28) and SMI (SMD: - 0.36; 95% CI.- 0.53 - - 0.19). The smoker had higher MMA% (SMD: 0.22; 95% CI: 0.07 - 0.37) and lower DMA% (SMD: - 0.16; 95% CI: - 0.26 - - 0.05). The drinker had higher MMA% (SMD: 0.17; 95% CI: 0.07 - 0.27) and lower DMA% (SMD: - 0.24; 95% CI: - 0.39 - - 0.10). The older people had higher MMA% (SMD: - 0.23; 95%CI: - 0.40 - - 0.06). In addition, the body mass index may influence the

关 键 词: 甲基化 META分析 人类 

分 类 号:R114[医药卫生—卫生毒理学]

 

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