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Uranium induces oxidative stress in lung epithelial cells

机译:铀诱导肺上皮细胞氧化应激

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摘要

Uranium compounds are widely used in the nuclear fuel cycle, antitank weapons, tank armor, and also as a pigment to color ceramics and glass. Effective management of waste uranium compounds is necessary to prevent exposure to avoid adverse health effects on the population. Health risks associated with uranium exposure includes kidney disease and respiratory disorders. In addition, several published results have shown uranium or depleted uranium causes DNA damage, mutagenicity, cancer and neurological defects. In the current study, uranium toxicity was evaluated in rat lung epithelial cells. The study shows uranium induces significant oxidative stress in rat lung epithelial cells followed by concomitant decrease in the antioxidant potential of the cells. Treatment with uranium to rat lung epithelial cells also decreased cell proliferation after 72 h in culture. The decrease in cell proliferation was attributed to loss of total glutathione and superoxide dismutase in the presence of uranium. Thus the results indicate the ineffectiveness of antioxidant system’s response to the oxidative stress induced by uranium in the cells.
机译:铀化合物广泛用于核燃料循环,反坦克武器,坦克装甲中,还用作陶瓷和玻璃着色的颜料。必须对废铀化合物进行有效管理,以防止暴露,以避免对人口造成不利的健康影响。与铀接触相关的健康风险包括肾脏疾病和呼吸系统疾病。此外,一些已发表的结果表明,铀或贫化铀会导致DNA损伤,致突变性,癌症和神经系统缺陷。在当前的研究中,评估了大鼠肺上皮细胞中的铀毒性。研究表明,铀在大鼠肺上皮细胞中诱导明显的氧化应激,随后细胞抗氧化能力随之降低。在培养72小时后,用铀处理大鼠肺上皮细胞也会降低细胞增殖。细胞增殖的减少归因于铀存在下总谷胱甘肽和超氧化物歧化酶的损失。因此,结果表明抗氧化剂系统对铀在细胞中诱导的氧化应激的反应无效。

著录项

  • 来源
    《Archives of Toxicology》 |2007年第6期|389-395|共7页
  • 作者单位

    Molecular Neurotoxicology Laboratory/Proteomics Core Department of Biology Texas Southern University 3100 Cleburne St Houston TX 77004 USA;

    Molecular Neurotoxicology Laboratory/Proteomics Core Department of Biology Texas Southern University 3100 Cleburne St Houston TX 77004 USA;

    Molecular Neurotoxicology Laboratory/Proteomics Core Department of Biology Texas Southern University 3100 Cleburne St Houston TX 77004 USA;

    Molecular Neurotoxicology Laboratory/Proteomics Core Department of Biology Texas Southern University 3100 Cleburne St Houston TX 77004 USA;

    Molecular Neurotoxicology Laboratory/Proteomics Core Department of Biology Texas Southern University 3100 Cleburne St Houston TX 77004 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Uranium; Glutathione; Reactive oxygen species; Superoxide dismutase; Cell proliferation; Lipid hydroperoxide;

    机译:铀;谷胱甘肽;活性氧;超氧化物歧化酶;细胞增殖;脂质过氧化氢;

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