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Recent advances in toxicological research and potential health impact of microplastics and nanoplastics in vivo

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Abstract

As emerging pollutants, direct and indirect adverse impacts of micro(nano)plastics (MPs/NPs) are raising an increasing environmental concern in recent years due to their poor biodegradability and difficulty in recycling. MPs/NPs can act as carriers of bacteria, viruses, or pollutants (such as heavy metals and toxic organic compounds), and may potentially change the toxicity and bioavailability of pollutants. Ingested or attached MPs/NPs can also be transferred from low-trophic level organisms to high-nutrient organisms or even the human body through the food chain transfer process. This article reviews the emerging field of micro- and nanoplastics on organisms, including the separate toxicity and toxicity of compound after the adsorption of organic pollutants or heavy metals, as well as possible mechanism of toxicological effects and evaluate the nano- and microplastics potential adverse effects on human health. The inherent toxic effects MPs/NPs mainly include the following: physical injury, growth performance decrease and behavioral alteration, lipid metabolic disorder, induced gut microbiota dysbiosis and disruption of the gut’s epithelial permeability, neurotoxicity, damage of reproductive system and offspring, oxidative stress, immunotoxicity, etc. Additionally, MPs/NPs may release harmful plastic additives and toxic monomers such as bisphenol A, phthalates, and toluene diisocyanate. The vectors’ effect also points out the potential interaction of MPs/NPs with pollutants such as heavy metals, polycyclic aromatic hydrocarbons, organochlorine pesticides, polychlorinated biphenyls, perfluorinated compounds, pharmaceuticals, and polybrominated diphenyl ethers. Nevertheless, these potential consequences of MPs/NPs being vectors for contaminants are controversial.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

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Funding

This project was funded by the Tianjin Municipal Health Bureau Science and Technology Talent Cultivation Project (RC20206).

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Q. Z. and Y. H. carried out collection and assembly of data, and analysis and interpretation of the data. R. J. C. and Q. L. helped to draft the manuscript. X. H. L., Q. Z., and Z. Y. Q. conceived the study, participated in its design and coordination, corrected the manuscript, and supervised the project. All authors read and approved the final manuscript.

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Correspondence to Qian Zhang.

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The authors declare no competing interests.

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Responsible Editor: Mohamed M. Abdel-Daim

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Zhang, Q., He, Y., Cheng, R. et al. Recent advances in toxicological research and potential health impact of microplastics and nanoplastics in vivo. Environ Sci Pollut Res 29, 40415–40448 (2022). https://doi.org/10.1007/s11356-022-19745-3

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  • DOI: https://doi.org/10.1007/s11356-022-19745-3

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