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      Potential toxicity of polystyrene microplastic particles

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          Abstract

          Environmental pollution arising from plastic waste is a major global concern. Plastic macroparticles, microparticles, and nanoparticles have the potential to affect marine ecosystems and human health. It is generally accepted that microplastic particles are not harmful or at best minimal to human health. However direct contact with microplastic particles may have possible adverse effect in cellular level. Primary polystyrene (PS) particles were the focus of this study, and we investigated the potential impacts of these microplastics on human health at the cellular level. We determined that PS particles were potential immune stimulants that induced cytokine and chemokine production in a size-dependent and concentration-dependent manner.

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          Most cited references66

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          Microplastics and Nanoplastics in Aquatic Environments: Aggregation, Deposition, and Enhanced Contaminant Transport

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            Uptake and Accumulation of Polystyrene Microplastics in Zebrafish (Danio rerio) and Toxic Effects in Liver.

            Microplastics have become emerging contaminants, causing widespread concern about their potential toxic effects. In this study, the uptake and tissue accumulation of polystyrene microplastics (PS-MPs) in zebrafish were detected, and the toxic effects in liver were investigated. The results showed that after 7 days of exposure, 5 μm diameter MPs accumulated in fish gills, liver, and gut, while 20 μm diameter MPs accumulated only in fish gills and gut. Histopathological analysis showed that both 5 μm and 70 nm PS-MPs caused inflammation and lipid accumulation in fish liver. PS-MPs also induced significantly increased activities of superoxide dismutase and catalase, indicating that oxidative stress was induced after treatment with MPs. In addition, metabolomic analysis suggested that exposure to MPs induced alterations of metabolic profiles in fish liver and disturbed the lipid and energy metabolism. These findings provide new insights into the toxic effects of MPs on fish.
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              Microplastics in bivalves cultured for human consumption.

              Microplastics are present throughout the marine environment and ingestion of these plastic particles (<1 mm) has been demonstrated in a laboratory setting for a wide array of marine organisms. Here, we investigate the presence of microplastics in two species of commercially grown bivalves: Mytilus edulis and Crassostrea gigas. Microplastics were recovered from the soft tissues of both species. At time of human consumption, M. edulis contains on average 0.36 ± 0.07 particles g(-1) (wet weight), while a plastic load of 0.47 ± 0.16 particles g(-1) ww was detected in C. gigas. As a result, the annual dietary exposure for European shellfish consumers can amount to 11,000 microplastics per year. The presence of marine microplastics in seafood could pose a threat to food safety, however, due to the complexity of estimating microplastic toxicity, estimations of the potential risks for human health posed by microplastics in food stuffs is not (yet) possible.
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                Author and article information

                Contributors
                JUNG811111@yuhs.ac.kr
                nanomed@cau.ac.kr
                jinkee.hong@yonsei.ac.kr
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                30 April 2020
                30 April 2020
                2020
                : 10
                : 7391
                Affiliations
                [1 ]ISNI 0000 0004 0470 5454, GRID grid.15444.30, Department of Chemical and Biomolecular Engineering, Yonsei University, ; 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722 Republic of Korea
                [2 ]ISNI 0000 0001 0789 9563, GRID grid.254224.7, School of Integrative Engineering, Chung-Ang University, ; 84, Heukseok-ro, Dongjak-gu, Seoul, 06974 Republic of Korea
                [3 ]ISNI 0000 0004 0470 5454, GRID grid.15444.30, Division of Pediatric Cardiology, Department of Pediatrics, Yonsei University College of Medicine, ; Seoul, 03722 Korea
                Author information
                http://orcid.org/0000-0003-1337-563X
                http://orcid.org/0000-0003-3554-7033
                http://orcid.org/0000-0003-3243-8536
                Article
                64464
                10.1038/s41598-020-64464-9
                7193629
                32355311
                dad5be7f-d1ef-49fb-8bd9-a21b830300c0
                © The Author(s) 2020

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 11 September 2019
                : 16 April 2020
                Funding
                Funded by: FundRef https://doi.org/10.13039/501100003725, National Research Foundation of Korea (NRF);
                Award ID: NRF-2019R1A6A3A03034115
                Award ID: NRF-2017R1E1A1A01074343
                Award Recipient :
                Categories
                Article
                Custom metadata
                © The Author(s) 2020

                Uncategorized
                cell culture,environmental monitoring,supramolecular polymers
                Uncategorized
                cell culture, environmental monitoring, supramolecular polymers

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