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炭黑颗粒诱发人B淋巴母细胞系遗传损伤的体外试验
  • ISSN号:1001-9391
  • 期刊名称:《中华劳动卫生职业病杂志》
  • 时间:0
  • 分类:R512.8[医药卫生—临床医学;医药卫生—内科学] R285.5[医药卫生—中药学;医药卫生—中医学]
  • 作者机构:[1]复旦大学公共卫生学院劳动卫生与环境卫生教研室,上海200032
  • 相关基金:国家“863”计划专项课题(2007AA06Z409);国家自然科学基金重大项目(10490182)
中文摘要:

目的评价2种粒径炭黑诱发的人B淋巴母细胞的遗传损伤效应。方法人B淋巴母细胞经终浓度为0(溶剂对照)、128、256、384、512μg/ml的14、280nm炭黑颗粒染毒24、48h后,用微核试验、hprt基因突变试验和彗星试验进行检测。微核试验指标为微核率(MNR)、微核细胞率(MCR)、核芽(Buds)、核质桥(NPBs)、核分裂指数(NDI)和凋亡细胞。彗星试验指标为尾部DNA百分比(%tail DNA)和olive尾矩(OTM)。hprt基因突变试验指标为基因突变率(Mf-hprt)。结果14nm炭黑染毒48h组,浓度为384、512μg/ml时,%tail DNA、OTM分别为8.23%±0.19%、11.23%±0.42%和3.72±0.08、4.90±0.18,明显高于对照组(5.10%±0.08%和2.22±0.03),差异有统计学意义(P〈0.01);凋亡细胞数分别为4.67±0.33、5.33±0.33,明显高于对照组(0.00±0.00),差异有统计学意义(P〈0.05)。hprt基因突变试验结果呈阴性。结论14nm超细炭黑细颗粒染毒48h可诱发人B淋巴母细胞DNA损伤,但280nm的炭黑颗粒未检测出类似效应。

英文摘要:

Objective To assess the genetic damage of human B lymphocyte cell line induced by 14 nm and 280 nm carbon black (CB) particles with micronucleus assay (CBMN), comet assay and hprt gene mutation test in vitro. Methods The genetic damage of human B lymphocyte cells exposed to 14 nm and 280 nm CB particles at the doses of 0, 128, 256, 384 and 512 μg/ml for 24 h and 48 h was detected using above three genotoxic assays. Micronucleus (MN) assay, comet assay, hprt gene mutation test were used to detect the genetic damage of human B lymphocyte cells induced by CB. Micronucleus rate(MNR), micronu- cleated cell rate(MCR), nuclear buds (Buds), nucleoplasmic bridges(NPBs), nuclear division index (NDI) and numbers of apoptotic cells served as indexes of CBMN assay;the percentage of DNA in the tail(% tail DNA) and the olive tail moment (OTM) were used as DNA damage indicators of comet assay; the hprt gene muta- tion frequency (Mf-hprt) served as the index of hprt gene mutation test. Results The % tail DNA, OTM in 14 nm CB group at the doses of 384 and 512 μg/ml for 48 h were 8.23%±0.19%, 11.23%±0.42% and 3.72±0.08,4.90±0.18,respectively,which were signifieantly higher than those in control (5.10%±0.08% and 2.22±0.03) (P〈0.01). The apoptotie cell rates in 14 nm CB group at the doses of 384 and 512 μg/ml for 48 h were 4.67±0.33 and 5.33±0.33, respectively,which were significantly higher than in control(0.00±0.00)(P〈0.05). The results of Mf-hprt were negative. Conclusion The genetic damage of human B lymphocyte cells exposed to 14 nm CB particles for 48 h could be detected. But the similar effects didn't appear in 280 nm CB group.

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期刊信息
  • 《中华劳动卫生职业病杂志》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中华医学会
  • 主编:
  • 地址:天津河东区华越道6号
  • 邮编:300011
  • 邮箱:cjoh1983@163.com
  • 电话:022-24333581
  • 国际标准刊号:ISSN:1001-9391
  • 国内统一刊号:ISSN:12-1094/R
  • 邮发代号:6-50
  • 获奖情况:
  • 2000年中华医学会优秀期刊银奖,2000年天津市优秀期刊奖,2001中华预防医学会优秀期刊一等奖
  • 国内外数据库收录:
  • 美国化学文摘(网络版),波兰哥白尼索引,荷兰文摘与引文数据库,美国生物医学检索系统,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2000版)
  • 被引量:16727