Chin J Schisto Control ›› 2015, Vol. 27 ›› Issue (3): 290-.DOI: 10.16250/j.32.1374.2015053

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Biological toxicity of heavy metals to Caenorhabditis elegans

HUANG Yue-e 1| 2 |ZHANG Nan3 | JIANG Yu-xin4 |GUO Wei 4 | LI Chao-pin 1|2*   

  1. 1 School of Earth and Environment|Anhui University of Science and Technology|Huainan 232001|China;2 School of Public Health|Wannan Medical College|China;3 Wuhu Environmental Monitoring Center|Anhui Province|China;4 School of Basic Medicine| Wannan Medical College| China
  • Online:2015-06-16 Published:2015-06-16
  • Contact: LI Chao?pin

应用秀丽隐杆线虫评估重金属生物毒性效应研究

黄月娥1|2|张楠3|姜玉新4|郭伟4|李朝品1, 2*   

  1. 1 安徽理工大学地球与环境学院 (淮南 232001);2 皖南医学院公共卫生学院; 3 安徽省芜湖市环境监测中心站; 4 皖南医学院基础 医学院
  • 通讯作者: 李朝品
  • 作者简介:黄月娥| 女| 博士研究生| 副教授。研究方向: 环境毒理学
  • 基金资助:
    国家自然科学基金(81270091); 活性生物大分子研究安徽省重点实验室项目(LAB201406); 芜湖市科技计划重点项目 (2014cxy08)

Abstract: Objective Objective To evaluate the biological toxicity of heavy metals by using Caenorhabditis elegans. Methods Methods The C. elegans at L4 stage were exposed to CdCl2,CrCl3,As2O3,PbCl2,HgCl2 with low concentrations and M9 buffer(the control group)for 72 h,respectively,and the effects of heavy metals with different concentrations on the survival time and reproduction of C. elegans were evaluated. Results Results After exposure to 2.5,10 μmol/L HgCl2 and PbCl2,10 μmol/L CdCl2,and 50 μmol/L CrCl3 for 72 h,respectively,the life spans and survival curves of the C. elegans were different from those in the control group, the differences were statistically significant(all P < 0.05) . After exposure to CdCl2,CrCl3,As2O3,PbCl2 and HgCl2 with the con? centrations of 2.5,50,100 μmol/L for 72 h,respectively,the generational time and brood size of C. elegans were all different from those in the control group(all P < 0.01) . Among the 5 heavy metals at low concentrations,the reproduction toxicity of Hg was bigger than Pb,Cd,Cr,and the toxicity of As was the weakest. Conclusion Conclusion Heavy metal exposure can affect the life span and reproductive toxicity of C. elegans.

Key words: Caenorhabditis elegans; Heavy metal; Biotoxicity; Reproductive toxicity

摘要: 目的 目的 应用秀丽隐杆线虫评估重金属生物毒性效应。方法 方法 将L4期秀丽隐杆线虫暴露于低浓度的CdCl2、 CrCl3、 As2O3、 PbCl2和HgCl2溶液及M9缓冲液 (对照组) 中72 h, 评价不同浓度重金属暴露对线虫生存时间和生殖毒性的影 响。 结果 结果 2.5、 10 μmol/L的HgCl2 和PbCl2、 10 μmol/L CdCl2、 50 μmol/L CrCl3染毒线虫72 h后, 与对照组相比, 线虫平均 寿命均缩短, 平均寿命及生存曲线差异均有统计学意义 (P均< 0.05)。L4期线虫分别在2.5、 50、 100 μmol/L上述重金属 溶液中暴露72 h, 世代时间延长、 后代数目减少, 与对照组比较差异均有统计学意义 (P均 < 0.01)。在低浓度时, Hg生殖 毒性较Pb、 Cd、 Cr大, As毒性较弱。结论 结论 重金属暴露对秀丽隐杆线虫寿命有一定影响, 可致子代生殖能力下降。

关键词: 秀丽隐杆线虫; 重金属; 生物毒性; 生殖毒性

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