Article(id=1241065991698960896, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241065978004557893, articleNumber=null, orderNo=null, doi=10.20043/j.cnki.MPM.202411271, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1731513600000, receivedDateStr=2024-11-14, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773822790312, onlineDateStr=2026-03-18, pubDate=1740412800000, pubDateStr=2025-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773822790312, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773822790312, creator=13701087609, updateTime=1773822790312, updator=13701087609, issue=Issue{id=1241065978004557893, tenantId=1146029695717560320, journalId=1227665162245664772, year='2025', volume='52', issue='4', pageStart='577', pageEnd='768', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773822787047, creator=13701087609, updateTime=1773823194927, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241067688831808347, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241065978004557893, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241067688831808348, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241065978004557893, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=616, endPage=621, ext={EN=ArticleExt(id=1241065992059671062, articleId=1241065991698960896, tenantId=1146029695717560320, journalId=1227665162245664772, language=EN, title=Study on the correlation between the DNA damage level of Cytb gene and the arsenic methylation degree, gene polymorphism in arsenic-exposed workers, columnId=1228016570660745413, journalTitle=Modern Preventive Medicine, columnName=Environmental and Occupational Health, runingTitle=null, highlight=null, articleAbstract=
Objective To investigate the correlation between the DNA damage level of the CYTB gene and the arsenic methylation level, FEN1 and XPC gene polymorphism in workers exposed to arsenic.
Methods A total of 79 workers exposed to occupational arsenic in a coke oven factory in the southern mountainous area of Yunnan Province were selected as the exposure group, and 24 agricultural workers from the same village were selected as the control group. The urine and peripheral blood samples of the subjects were collected.The concentration and percentage of arsenic and its metabolites were detected in the urine, and the DNA damage level of the CYTB gene was detected in peripheral blood.
Results The concentrations of inorganic arsenic (iAs), monomethylarsonic acid (MMA), and dimethylarsonic acid (DMA) in the urine of the exposure group were higher than those of the control group (P<0.01). The methylation level of the exposure group was significantly higher than that of the control group in terms of MMA% and primary methylation index (PMI), while the DMA% and secondary methylation index (SMI) were significantly lower than those of the control group (P<0.01). Linear regression analysis showed that the DNA damage level of the CYTB gene was positively correlated with MMA% (P< 0.01) and negatively correlated with SMI (P<0.001). The subjects with genotypes AA or GA+AA at the rs174538 locus of the FEN1 gene had significantly higher DNA damage levels of the CYTB gene than those with genotypes GG at this locus (P< 0.05). However, there was no statistical correlation between the genotype of XPC and the level of DNA damage in the CYTB gene (P>0.05).
Conclusion Occupational arsenic exposure can lead to increased concentrations of arsenic and its metabolites in urine and decreased methylation of arsenic metabolism in the body. The DNA damage of the CYTB gene can be used as a marker of damage and early health damage in the body, and the mutation at the rs174538 locus of the FEN1 gene is associated with DNA damage of the CYTB gene, which can be used as an indicator of disease susceptibility in arsenic-exposed populations.
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CYTB基因DNA损伤与甲基化、基因多态性的相关性研究, columnId=1228016571273113811, journalTitle=现代预防医学, columnName=环境与职业卫生, runingTitle=null, highlight=null, articleAbstract=
目的 研究砷暴露工人CYTB基因的DNA损伤水平与甲基化程度、FEN1、XPC基因的多态性之间的相关性。
方法 选取云南省南部山区某焦炉厂存在职业性砷暴露的79名工人作为暴露组,与之同村的24名农业工人作为对照组,采集研究对象的尿液和外周血,检测尿液中砷及其代谢产物的浓度、百分比,检测外周血中CYTB基因的DNA损伤水平。
结果 暴露组尿液中的无机砷(iAs)、单甲基砷酸(MMA)、二甲基砷酸(DMA)的浓度均高于对照组(P均<0.01)。甲基化水平上,暴露组MMA%、一级甲基化指数(PMI)显著高于对照组,DMA%、二级甲基化指数(SMI)显著低于对照组(P均<0.01)。线性回归结果显示CYTB基因的DNA损伤水平与MMA%呈正相关(P<0.01),与SMI呈负相关(P<0.001)。FEN1基因rs174538位点基因型为AA或GA+AA的受试者的CYTB基因DNA损伤水平显著高于该位点基因型为GG的受试者(P<0.05),但XPC的基因型与CYTB基因的DNA损伤水平无统计学相关性(P>0.05)。
结论 焦炉厂工人的职业性砷暴露会导致尿中砷及其代谢产物的浓度增加、体内砷代谢的甲基化程度降低,CYTB基因的DNA损伤可以作为指示体内甲基化水平的受损、早期健康损害的标志物,并且,FEN1基因rs174538位点的突变可以作为砷暴露人群疾病易感性的指标。
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本刊刊出的所有文章不代表中华预防医学会和本刊编委会的观点,除非特别声明。, copyrightOwner=中华预防医学会和四川大学华西公共卫生学院, extLink=null, articleAbsUrl=null, sourceXml=niHyZvWJMt7mzZE++NgHvA==, magXml=sSt7wWhUmvO3Z/JCxamvbQ==, pdfUrl=null, pdf=VrUo/MiTe2y6WIwEIxufJg==, pdfFileSize=854755, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=giD/bCt4Tsxyer03HMMgKQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=csXn8pIGOJj1E/mrjQ8i7w==, mapNumber=null, authorCompany=null, fund=null, authors=
李舒婷(1991—),女,博士,讲师,研究方向:职业卫生与职业医学
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Correlation of DNA damage levels of the CYTB gene with levels of urinary arsenic and its metabolites, figureFileSmall=pLOIq2bgpExKyMI7XwpskQ==, figureFileBig=giD/bCt4Tsxyer03HMMgKQ==, tableContent=null), ArticleFig(id=1241066001719153661, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=CN, label=图1, caption=
CYTB基因的DNA损伤水平与尿砷及其代谢产物水平的相关性注:图A为对照组和暴露组工人CYTB基因的DNA损伤水平(***P <0.001);图B-D为所有研究对象尿中无机砷(iAs)、单甲基砷酸(MMA)、二甲基砷酸(DMA)浓度与CYTB基因的DNA损伤水平之间的相关性。
, figureFileSmall=pLOIq2bgpExKyMI7XwpskQ==, figureFileBig=giD/bCt4Tsxyer03HMMgKQ==, tableContent=null), ArticleFig(id=1241066001975005194, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=EN, label=Fig.2, caption=
Correlation between DNA damage levels of the CYTB gene and arsenic methylation levels, figureFileSmall=bweK/zMAT2/Icxe2R3i/hQ==, figureFileBig=uYZsgok87xn9VaeI0aiPAA==, tableContent=null), ArticleFig(id=1241066002063085585, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=CN, label=图2, caption=
CYTB基因的DNA损伤水平与砷甲基化水平的相关性注:图A-D为所有研究对象尿中单甲基砷酸百分比(MMA%)、二甲基砷酸百分比(DMA%)、一甲基化指数(PMI)、二甲基化指数(SMI)与CYTB基因的DNA损伤水平之间的相关性。
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Primer sequences for high-resolution melting analysis
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因 | 多态性位点 | 单核苷酸序列 | 片段长度 |
|---|
| FEN1 | rs174538 | 上游 5’-CAAGTCCCTCAATGCCACTTG-3’ | 158 bp |
| | 下游 5’-TCGCATCTCCGTCTGGAACT-3’ | |
| XPC | rs2228001 | 上游 5’-AGCAGCTTCCCACCTGTTC-3’ | 65 bp |
| | 下游 5’-GTGGGTGCCCCTCTAGTG-3’ | |
| XPC | rs3731055 | 上游 5’-AGGCACGACTGGCCATTTT-3’ | 73 bp |
| | 下游 5’-AGGAGGTCGCTCGAAGGA-3’ | |
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用于高分辨率熔解分析的引物序列
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| 基因 | 多态性位点 | 单核苷酸序列 | 片段长度 |
|---|
| FEN1 | rs174538 | 上游 5’-CAAGTCCCTCAATGCCACTTG-3’ | 158 bp |
| | 下游 5’-TCGCATCTCCGTCTGGAACT-3’ | |
| XPC | rs2228001 | 上游 5’-AGCAGCTTCCCACCTGTTC-3’ | 65 bp |
| | 下游 5’-GTGGGTGCCCCTCTAGTG-3’ | |
| XPC | rs3731055 | 上游 5’-AGGCACGACTGGCCATTTT-3’ | 73 bp |
| | 下游 5’-AGGAGGTCGCTCGAAGGA-3’ | |
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General condition of the study subjects and urinary levels of arsenic and its metabolites
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 对照组(n=24) | 暴露组(n=79) | 统计量值 | P值 |
|---|
年龄(岁, ) | 35.21 ± 3.24 | 36.24 ± 6.81 | 0.715 | 0.476 |
| 吸烟人数(%) | 14(58.3) | 47(59.5) | 1.039 | 0.861 |
| 饮酒人数(%) | 11(45.8) | 39(49.4) | 1.023 | 0.897 |
| 尿中砷及代谢物浓度 | | | | |
iAs浓度(mg/g, ) | 0.43 ± 0.18 | 2.01 ± 0.48 | 15.750 | <0.001 |
MMA浓度(mg/g, ) | 0.37 ± 0.16 | 2.12 ± 0.05 | 85.230 | <0.001 |
DMA浓度(mg/g, ) | 1.12 ± 0.31 | 2.65 ± 0.52 | 13.670 | <0.001 |
| 尿中砷及代谢物百分比 | | | | |
iAs%( ) | 13.72 ± 11.85 | 17.35 ± 12.34 | 1.273 | 0.206 |
MMA%( ) | 8.12 ± 2.21 | 19.09 ± 5.13 | 10.170 | <0.001 |
DMA%( ) | 78.15 ± 11.02 | 63.60 ± 14.31 | 4.580 | <0.001 |
| 尿中砷代谢甲基化指数 | | | | |
| PMI[M(P25,P75)] | 0.81 (0.12,6.41) | 1.42 (0.21,9.66) | 8.511 | 0.039 |
| SMI[M(P25,P75)] | 9.79 (5.93,21.84) | 3.26 (1.06,14.06) | 2.628 | 0.009 |
), ArticleFig(id=1241066002457350182, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=CN, label=表2, caption=
研究对象的基本情况和尿中砷及其代谢物的水平
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| 项目 | 对照组(n=24) | 暴露组(n=79) | 统计量值 | P值 |
|---|
年龄(岁, ) | 35.21 ± 3.24 | 36.24 ± 6.81 | 0.715 | 0.476 |
| 吸烟人数(%) | 14(58.3) | 47(59.5) | 1.039 | 0.861 |
| 饮酒人数(%) | 11(45.8) | 39(49.4) | 1.023 | 0.897 |
| 尿中砷及代谢物浓度 | | | | |
iAs浓度(mg/g, ) | 0.43 ± 0.18 | 2.01 ± 0.48 | 15.750 | <0.001 |
MMA浓度(mg/g, ) | 0.37 ± 0.16 | 2.12 ± 0.05 | 85.230 | <0.001 |
DMA浓度(mg/g, ) | 1.12 ± 0.31 | 2.65 ± 0.52 | 13.670 | <0.001 |
| 尿中砷及代谢物百分比 | | | | |
iAs%( ) | 13.72 ± 11.85 | 17.35 ± 12.34 | 1.273 | 0.206 |
MMA%( ) | 8.12 ± 2.21 | 19.09 ± 5.13 | 10.170 | <0.001 |
DMA%( ) | 78.15 ± 11.02 | 63.60 ± 14.31 | 4.580 | <0.001 |
| 尿中砷代谢甲基化指数 | | | | |
| PMI[M(P25,P75)] | 0.81 (0.12,6.41) | 1.42 (0.21,9.66) | 8.511 | 0.039 |
| SMI[M(P25,P75)] | 9.79 (5.93,21.84) | 3.26 (1.06,14.06) | 2.628 | 0.009 |
), ArticleFig(id=1241066002574790696, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=EN, label=Table 3, caption=
DNA damage of CYTB gene under different genotypes in control and exposed groups
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| 基因型 | | 对照组 | 暴露组 |
|---|
个体数量 (个) | DNA损伤 (均值±标准差) | P值 | 个体数量 (个) | DNA损伤 (均值±标准差) | P值 |
|---|
| FEN1 rs174538 | GG | 13 | 2.33±0.18 | 参考 | 34 | 2.91±0.15 | 参考 |
| GA | 7 | 2.39±0.28 | 0.982 | 29 | 3.28±0.13 | 0.181 |
| AA | 4 | 2.65±0.35 | 0.731 | 16 | 3.56±0.19 | 0.033 |
| GA+AA | 11 | 2.45±0.21 | 0.578 | 45 | 3.38±0.11 | 0.009 |
| XPC rs2228001 | TT | 10 | 2.30±0.21 | 参考 | 49 | 3.26±0.13 | 参考 |
| TG | 10 | 2.44±0.22 | 0.907 | 25 | 3.08±0.13 | 0.684 |
| GG | 4 | 2.58±0.22 | 0.784 | 5 | 2.86±0.33 | 0.587 |
| XPC rs3731055 | GG | 14 | 2.36±0.18 | 参考 | 39 | 3.20±0.14 | 参考 |
| GA | 7 | 2.47±0.29 | 0.940 | 29 | 3.12±0.16 | 0.906 |
| AA | 3 | 2.46±0.23 | 0.973 | 10 | 3.25±0.12 | 0.982 |
), ArticleFig(id=1241066004067962926, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241065991698960896, language=CN, label=表3, caption=
对照组和暴露组不同基因型下CYTB基因的DNA损伤情况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因型 | | 对照组 | 暴露组 |
|---|
个体数量 (个) | DNA损伤 (均值±标准差) | P值 | 个体数量 (个) | DNA损伤 (均值±标准差) | P值 |
|---|
| FEN1 rs174538 | GG | 13 | 2.33±0.18 | 参考 | 34 | 2.91±0.15 | 参考 |
| GA | 7 | 2.39±0.28 | 0.982 | 29 | 3.28±0.13 | 0.181 |
| AA | 4 | 2.65±0.35 | 0.731 | 16 | 3.56±0.19 | 0.033 |
| GA+AA | 11 | 2.45±0.21 | 0.578 | 45 | 3.38±0.11 | 0.009 |
| XPC rs2228001 | TT | 10 | 2.30±0.21 | 参考 | 49 | 3.26±0.13 | 参考 |
| TG | 10 | 2.44±0.22 | 0.907 | 25 | 3.08±0.13 | 0.684 |
| GG | 4 | 2.58±0.22 | 0.784 | 5 | 2.86±0.33 | 0.587 |
| XPC rs3731055 | GG | 14 | 2.36±0.18 | 参考 | 39 | 3.20±0.14 | 参考 |
| GA | 7 | 2.47±0.29 | 0.940 | 29 | 3.12±0.16 | 0.906 |
| AA | 3 | 2.46±0.23 | 0.973 | 10 | 3.25±0.12 | 0.982 |
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