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ID:53020144
大小:1.02 MB
页数:6页
时间:2020-04-12
《低剂量工业射线探伤工人职业暴露的遗传损伤效应.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、矗变·■变·突变2015年3月第27卷第2期囝■圈Genotoxiceffectsoflowdose低剂量工业射线探■■■■■■_-0ionlzlnflradiaUonoccupationally伤工人职业暴露的exposedinindustrialflaw遗传损伤效应detectionworkers董小梅,王治,张国伟,董建云,周妮娅,凌曦,刘晋袢,曹佳,DONGXiaomei,WANGZhi。,ZHANGGuowei,张丽龙,敖琳'DONGJ~anyun,ZHOUNiyaI,LINGXi,LIU血lyi,(1.第三军医大学军事预防医学院毒理学CAOJia1,ZHANGLilong~,A
2、OLinI,研究所,重庆400038;2.重庆市疾病预防控制中心,重庆400042)f1.InstituteofToxicology,CollegeofPreventiveMilitaryMedicine,刀zMilitaryMedicalUniversi~Chongqing40003&2.ChongqingCenterforDiseaseControlandPrevention,Chongqing400042,Ctf~a)【摘要】目的:探讨低剂量电离辐射对工业射线探伤工人的遗传损伤效应。方法:选取重庆市某国有企业探伤工人31人为探伤组,招募年龄、性别构成和吸烟率无显著差异的健康服务行业人
3、员49人作为对照组。采用热释光剂量计(TLD)对探伤人员进行个体剂量监测。微量全血培养的胞质分裂阻滞微核试验检测染色体损伤。采用Real—TimePCR分析线粒体DNA(mtDNA)拷贝数和超螺旋构象,长链PCR分析mtDNA的完整性,qRT—PCR分析线粒体转录因子A(TFAM)和过氧化酶体增殖受体Y轴共活化因子la(PGC—la)的mRNA水平。结果:探伤工人的辐射年有效剂量为(0.15±0.03)mSv/a,范围为(0.12~0.21)mSv/a。探伤组的微核率和核芽率均显著增加<0.O1)。探伤组mtDNA拷贝数(40.04±24.99)与对照组(24.86±19.14)~t较显著
4、增加(尸5、10.39696.issn.1004—616x.2015.02.005【ABSTRACT】OBJECTIVE:T0assessthegeneticdamageoflowdoseionizingradiation(LDIR)occupationallyexposedinflawdetectionworkers.METHoDS:WeusedtheThermo—luminescentDosimeter(TLD)tomeasuretheindividualexposuredose.Thirty—oneflawdetectionworkersandforty—ninepeoplewithoutsuc6、hexposurewereenrolled.Thecytokinesis—blockmicronucleusfCBMN1assaywasperformedtodetectthechromosomedamageinperipheralbloodlymphocytes.Real—timePCRwasusedtoanalyzethemtDNAcopynumberandsupercoilingformationchange.Long—PCRwasappliedtoanalyzemtDNAintegrity.qRT-PCRwasappliedtoanalyzemRNAlevelsofTFAMandP7、GC一1a.RESUI』rS:Themeanannualeffectdoseinflawdetectionworkerswas(0.15±0.03)mSv/a,rangeinr0.12—0.211mSv/a.TheMNandNBUDsrateinflawdetectionworkergroupwereobviouslyelevatedcomparedwithcontrolsfP<0.01).Inourstudy,them
5、10.39696.issn.1004—616x.2015.02.005【ABSTRACT】OBJECTIVE:T0assessthegeneticdamageoflowdoseionizingradiation(LDIR)occupationallyexposedinflawdetectionworkers.METHoDS:WeusedtheThermo—luminescentDosimeter(TLD)tomeasuretheindividualexposuredose.Thirty—oneflawdetectionworkersandforty—ninepeoplewithoutsuc
6、hexposurewereenrolled.Thecytokinesis—blockmicronucleusfCBMN1assaywasperformedtodetectthechromosomedamageinperipheralbloodlymphocytes.Real—timePCRwasusedtoanalyzethemtDNAcopynumberandsupercoilingformationchange.Long—PCRwasappliedtoanalyzemtDNAintegrity.qRT-PCRwasappliedtoanalyzemRNAlevelsofTFAMandP
7、GC一1a.RESUI』rS:Themeanannualeffectdoseinflawdetectionworkerswas(0.15±0.03)mSv/a,rangeinr0.12—0.211mSv/a.TheMNandNBUDsrateinflawdetectionworkergroupwereobviouslyelevatedcomparedwithcontrolsfP<0.01).Inourstudy,them
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