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Oxidative stress, metabolic and histopathological alterations in mussels exposed to remediated seawater by GO-PEI after contamination with mercury.
Comparative Biochemistry and Physiology A: Molecular & Integrative Physiology ( IF 2.1 ) Pub Date : 2020-02-10 , DOI: 10.1016/j.cbpa.2020.110674 Francesca Coppola 1 , Ana Bessa 2 , Bruno Henriques 3 , Tania Russo 4 , Amadeu M V M Soares 1 , Etelvina Figueira 1 , Paula A A P Marques 2 , Gianluca Polese 4 , Anna Di Cosmo 4 , Eduarda Pereira 3 , Rosa Freitas 1
Comparative Biochemistry and Physiology A: Molecular & Integrative Physiology ( IF 2.1 ) Pub Date : 2020-02-10 , DOI: 10.1016/j.cbpa.2020.110674 Francesca Coppola 1 , Ana Bessa 2 , Bruno Henriques 3 , Tania Russo 4 , Amadeu M V M Soares 1 , Etelvina Figueira 1 , Paula A A P Marques 2 , Gianluca Polese 4 , Anna Di Cosmo 4 , Eduarda Pereira 3 , Rosa Freitas 1
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The modern technology brought new engineering materials (e.g. nanostructured materials) with advantageous characteristics such as a high capacity to decontaminate water from pollutants (for example metal(loid)s). Among those innovative materials the synthesis of nanostructured materials (NSMs) based on graphene as graphene oxide (GO) functionalized with polyethyleneimine (GO-PEI) had a great success due to their metal removal capacity from water. However, research dedicated to environmental risks related to the application of these materials is still non-existent. To evaluate the impacts of such potential stressors, benthic species can be a good model as they are affected by several environmental constraints. Particularly, the mussel Mytilus galloprovincialis has been identified by several authors as a bioindicator that responds quickly to environmental disturbances, with a wide spatial distribution and economic relevance. Thus, the present study aimed to evaluate the impacts caused in M. galloprovincialis by seawater previously contaminated by Hg and decontaminated using GO-PEI. For this, histopathological and biochemical alterations were examined. This study demonstrated that mussels exposed to the contaminant (Hg), the decontaminant (GO-PEI) and the combination of both (Hg + GO-PEI) presented an increment of histopathological, oxidative stress and metabolic alterations if compared to organisms under remediated seawater and control conditions The present findings highlight the possibility to remediate seawater with nanoparticles for environmental safety purposes.
中文翻译：
汞污染后，GO-PEI暴露于补救海水中的贻贝的氧化应激，代谢和组织病理学改变。
现代技术带来了具有优势特性的新工程材料（例如纳米结构材料），例如具有高能力将水从污染物（例如金属（金属））中去除。在这些创新的材料中，基于聚乙烯的亚胺（GO-PEI）功能化的石墨烯作为氧化石墨烯（GO），以石墨烯为基础的纳米结构材料（NSMs）的合成取得了巨大的成功。但是，针对与这些材料的应用有关的环境风险的研究仍然不存在。为了评估这种潜在压力源的影响，底栖生物可能是一个很好的模型，因为它们受到多种环境约束的影响。尤其，贻贝Mytilus galloprovincialis已被多位作者鉴定为一种生物指示剂，可以对环境干扰做出快速反应，具有广泛的空间分布和经济意义。因此，本研究旨在评估先前受Hg污染和使用GO-PEI净化的海水对Galloprovincialis造成的影响。为此，检查了组织病理学和生化改变。这项研究表明，与经过海水修复的生物相比，暴露于污染物（Hg），去污剂（GO-PEI）和两者的组合（Hg + GO-PEI）的贻贝呈现出组织病理学，氧化应激和代谢变化的增加和控制条件本研究结果凸显了出于环境安全目的用纳米颗粒修复海水的可能性。
更新日期：2020-02-10
中文翻译：
汞污染后，GO-PEI暴露于补救海水中的贻贝的氧化应激，代谢和组织病理学改变。
现代技术带来了具有优势特性的新工程材料（例如纳米结构材料），例如具有高能力将水从污染物（例如金属（金属））中去除。在这些创新的材料中，基于聚乙烯的亚胺（GO-PEI）功能化的石墨烯作为氧化石墨烯（GO），以石墨烯为基础的纳米结构材料（NSMs）的合成取得了巨大的成功。但是，针对与这些材料的应用有关的环境风险的研究仍然不存在。为了评估这种潜在压力源的影响，底栖生物可能是一个很好的模型，因为它们受到多种环境约束的影响。尤其，贻贝Mytilus galloprovincialis已被多位作者鉴定为一种生物指示剂，可以对环境干扰做出快速反应，具有广泛的空间分布和经济意义。因此，本研究旨在评估先前受Hg污染和使用GO-PEI净化的海水对Galloprovincialis造成的影响。为此，检查了组织病理学和生化改变。这项研究表明，与经过海水修复的生物相比，暴露于污染物（Hg），去污剂（GO-PEI）和两者的组合（Hg + GO-PEI）的贻贝呈现出组织病理学，氧化应激和代谢变化的增加和控制条件本研究结果凸显了出于环境安全目的用纳米颗粒修复海水的可能性。
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