当前位置: X-MOL 学术Mutat. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A critical review and meta-analysis of epidemiology studies of occupationally exposed styrene workers evaluated for chromosomal aberration incidence
Mutation Research/Genetic Toxicology and Environmental Mutagenesis ( IF 1.9 ) Pub Date : 2020-10-22 , DOI: 10.1016/j.mrgentox.2020.503275
James J Collins 1 , Martha Moore 2
Affiliation  

Chromosome aberrations in the peripheral blood lymphocytes of styrene exposed workers have been suggested as a potential early marker for cancer risk. We performed a critical review and abstracted data from all studies using current chromosome aberration scoring criteria and providing at least a mean and standard deviation or standard error for the exposed and comparison groups. Using these data, we conducted a meta-analysis of occupational styrene exposed workers and incidence of chromosome aberrations. Our meta-analysis used the standardized mean difference as the summary statistic since all studies assess the same outcome but use different comparison populations. The primary meta-analysis of the 20 comparisons of 505 styrene exposed workers to 532 comparison workers found a meta-mean difference of 0.361 (95 % CI −0.084 to 0.807, random effects model), but there was substantial lack of consistency across studies (I2 of 90.11, p-value <0.001, fixed effect model). Studies with higher styrene exposures had lower mean standard differences compared to studies with lower styrene exposures. While studies of styrene workers overall had a slight increase in chromosomal aberrations relative to comparison groups, the lack of consistency across studies and the absence of an exposure response and other limitations of the reviewed studies including inadequate exposure assessment, small numbers of participants per study, and poorly matched exposed and comparison workers, we find insufficient evidence to support a conclusion that styrene exposure increases chromosome aberration frequencies in styrene workers.



中文翻译:

对染色体畸变发生率进行评估的职业暴露苯乙烯工人的流行病学研究的批判性审查和荟萃分析

接触苯乙烯的工人外周血淋巴细胞中的染色体畸变已被认为是癌症风险的潜在早期标志物。我们使用当前的染色体畸变评分标准对所有研究进行了严格审查并提取了数据,并至少提供了暴露组和对照组的平均值和标准偏差或标准误差。使用这些数据,我们对职业接触苯乙烯的工人和染色体畸变的发生率进行了荟萃分析。我们的荟萃分析使用标准化平均差异作为汇总统计量,因为所有研究评估相同的结果但使用不同的比较人群。对 505 名接触苯乙烯的工人与 532 名比较工人的 20 次比较进行的主要荟萃分析发现,荟萃平均差异为 0.361(95% CI -0.084 至 0.807,随机效应模型),但研究之间缺乏一致性(I2 为 90.11,p 值 <0.001,固定效应模型)。与较低苯乙烯暴露的研究相比,较高苯乙烯暴露的研究具有较低的平均标准差异。虽然与对照组相比,苯乙烯工人的研究总体上的染色体畸变略有增加,但研究之间缺乏一致性,并且没有暴露反应和审查研究的其他局限性,包括暴露评估不足、每项研究的参与者人数少、与暴露和比较工人匹配不佳,我们发现没有足够的证据支持苯乙烯暴露会增加苯乙烯工​​人染色体畸变频率的结论。11,p 值 <0.001,固定效应模型)。与较低苯乙烯暴露的研究相比,较高苯乙烯暴露的研究具有较低的平均标准差异。虽然与对照组相比,苯乙烯工人的研究总体上的染色体畸变略有增加,但研究之间缺乏一致性,并且没有暴露反应和审查研究的其他局限性,包括暴露评估不足、每项研究的参与者人数少、与暴露和比较工人匹配不佳,我们发现没有足够的证据支持苯乙烯暴露会增加苯乙烯工​​人染色体畸变频率的结论。11,p 值 <0.001,固定效应模型)。与较低苯乙烯暴露的研究相比,较高苯乙烯暴露的研究具有较低的平均标准差异。虽然与对照组相比,苯乙烯工人的研究总体上的染色体畸变略有增加,但研究之间缺乏一致性,并且没有暴露反应和审查研究的其他局限性,包括暴露评估不足、每项研究的参与者人数少、与暴露和比较工人匹配不佳,我们发现没有足够的证据支持苯乙烯暴露会增加苯乙烯工​​人染色体畸变频率的结论。

更新日期:2020-11-09
down
wechat
bug