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首页> 外文期刊>Environmental toxicology and chemistry >COPPER AND ZINC CONTAMINATION IN OYSTERS: SUBCELLULAR DISTRIBUTION AND DETOXIFICATION
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COPPER AND ZINC CONTAMINATION IN OYSTERS: SUBCELLULAR DISTRIBUTION AND DETOXIFICATION

机译：牡蛎中的铜和锌污染：亚细胞分布和排毒

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摘要

Metal pollution levels in estuarine and coastal environments have been widely reported, but few documented reports exist of severe contamination in specific environments. Here, we report on a metal-contaminated estuary in Fujian Province, China, in which blue oysters (Crassostrea hongkongensis) and green oysters (Crassostrea angulata) were discovered to be contaminated with Cu and other metals. Extraordinarily high metal concentrations were found in the oysters collected from the estuary. Comparison with historical data suggests that the estuary has recently been contaminated with Cr, Cu, Ni, and Zn. Metal concentrations in blue oysters were as high as 1.4 and 2.4% of whole-body tissue dry wt for Cu and Zn, respectively. Cellular debris was the main subcellular fraction binding the metals, but metal-rich granules were important for Cr, Ni, and Pb. With increasing Cu accumulation, its partitioning into the cytosolic proteins decreased. In contrast, metallothionein-like proteins increased their importance in binding with Zn as tissue concentrations of Zn increased. In the most severely contaminated oysters, only a negligible fraction of their Cu and Zn was bound with the metal-sensitive fraction, which may explain the survival of oysters in such contaminated environments.
机译：河口和沿海环境中的金属污染水平已得到广泛报道，但很少有文献报道在特定环境中存在严重污染。在这里，我们报道了中国福建省的一个被金属污染的河口，其中蓝色牡蛎（Crassostrea hongkongensis）和绿色牡蛎（Crassostrea angulata）被铜和其他金属污染。在从河口收集的牡蛎中发现了异常高的金属浓度。与历史数据的比较表明，河口最近被Cr，Cu，Ni和Zn污染。蓝牡蛎中的金属浓度分别高达全身组织干重的1.4％和2.4％（铜和锌）。细胞碎片是结合金属的主要亚细胞部分，但是富含金属的颗粒对于Cr，Ni和Pb很重要。随着铜积累的增加，其分配到胞质蛋白中的数量减少。相反，随着组织锌浓度的增加，类金属硫蛋白样蛋白增加了其与锌结合的重要性。在受最严重污染的牡蛎中，只有极少量的铜和锌与金属敏感部分结合在一起，这可以解释牡蛎在这种受污染环境中的生存。

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  • 来源
    《Environmental toxicology and chemistry》 |2011年第8期|p.1767-1774|共8页
  • 作者

    Wen-Xiong Wang; Yubo Yang; Xiaoyu Guo; Mei He; Feng Guo; Caihuan Ke;

  • 作者单位

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

    State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China;

  • 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

    oysters; estuary; copper; zinc; subcellular partitioning;

    机译：生蚝;河口;铜;锌;亚细胞分配;

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