Are CuO nanoparticles effects on hemocytes of the marine scallop (Chlamys farreri) caused by particles and/or corresponding released ions?

文献类型： 外文期刊

第一作者： Sun, Xuemei

作者： Sun, Xuemei;Chen, Bijuan;Xia, Bin;Han, Qian;Zhu, Lin;Qu, Kerning;Sun, Xuemei;Chen, Bijuan;Xia, Bin;Zhu, Lin;Qu, Kerning

作者机构：

关键词： CuO nanoparticles;Hemocyte;Scallops;Particles;Released ions;Integrated biomarker response

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2017 年 139 卷

页码：

收录情况： SCI

摘要： Manufactured nanoparticles (NPs) have become emerging pollutants and attracted extensive concern about their potential effects on the marine environment. However, the contribution of particles and their corresponding released ions to the overall toxicity of CuO NPs is poorly understood. In this study, we investigated the toxicological effects of CuO NPs and their corresponding released ions on the hemocytes of Chlamys furred. Both copper species induced membrane damage, and increased lysosome contents in hemocytes. Based on the integrated biomarker responses method, the relative contributions of particles (NPparticle) and dissolved ions (NPion) to the toxicity of CuO NPs after 2 h of exposure were 62.07% and 37.93%, respectively, indicating that the particles rather than the dissolved ions were the dominant source of NP toxicity. Transmission/sranriing electron microscopy analysis confirmed the greater histopathological effects exerted by particles than Cu ions. Higher reactive oxygen species (ROS) generation induced by NPparticle wide than by NPion suggested that the intracellular ROS production might be responsible for the NP toxicity. Our findings suggest that particles effects play a key role in risk assessment of CuO NPs on the marine ecosystem.

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