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Evaluation of microplastic toxicity in accordance with different sizes and exposure times in the marine copepod Tigriopus japonicus

机译:根据海洋co足类Tigriopus japonicus的不同大小和暴露时间评估其微塑性毒性

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摘要

The indiscriminate use of plastic has greatly increased microplastic contamination risk in the marine environment. Microplastics can affect all marine life via the food web, from primary producers (e.g., microalgae) to final consumers (e.g., carnivorous fish). Thus, several studies have attempted to evaluate microplastic toxicity, but information about the underlying mechanisms of their effect is limited. Therefore, in this study, we examined multiple factors that could contribute to microplastic-induced toxicity. We investigated the potential molecular effects of microplastic size and exposure time. We exposed the marine copepod Tigriopus japonicas to 50 nm and 10 mu m polystyrene microbeads. We found that both size and exposure time increased intracellular levels of reactive oxygen species. In addition, antioxidant-related gene expression was modulated and antioxidant enzyme activities were changed significantly. The results of this study provide important insights into the molecular mechanisms of microplastic-induced toxicity in a marine organism.
机译:不加区别地使用塑料大大增加了海洋环境中微塑料污染的风险。从初级生产者(例如微藻)到最终消费者(例如肉食性鱼类),微塑料可以通过食物网影响所有海洋生物。因此,一些研究试图评估微塑性毒性,但是关于其作用的潜在机制的信息是有限的。因此,在这项研究中,我们研究了可能导致微塑料诱导的毒性的多种因素。我们研究了微塑料大小和暴露时间的潜在分子效应。我们将海洋co足类Tigriopus japonicas暴露于50 nm和10μm的聚苯乙烯微珠中。我们发现大小和暴露时间都增加了细胞内活性氧的水平。此外,抗氧化剂相关的基因表达受到调节,抗氧化酶的活性发生了显着变化。这项研究的结果提供了重要的见解,在海洋生物中由塑料引起的毒性的分子机制。

著录项

  • 来源
    《Marine Environmental Research》 |2020年第1期|104838.1-104838.7|共7页
  • 作者

  • 作者单位

    Korea Inst Toxicol Environm Biol Res Grp 17 Jegok Gil Jinju 52834 South Korea;

    Korea Inst Ocean Sci & Technol Oil & POPs Res Lab 41 Jangmok 1 Gil Geoje 53201 South Korea;

    Korea Inst Toxicol Environm Biol Res Grp 17 Jegok Gil Jinju 52834 South Korea|Korea Univ Sci & Technol UST Human & Environm Toxicol Program 217 Gajeong Ro Daejeon 34113 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microplastic; Oxidative stress; Reactive oxygen species; Gene expression; Enzyme activity;

    机译:微塑性氧化应激活性氧;基因表达;酶活性;
  • 入库时间 2022-08-18 05:18:03

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