Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 779, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.146454
Keywords
Nano-plastics; Toxicity; Fecal microbiota transplantation; Redox balance; Caenorhabditis elegans
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Funding
- Advanced Postdoctoral Program of Zhejiang Province and Science and Technology Department of Zhejiang Province [2018C02045]
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This study systematically evaluated the toxicity of nano-plastics on C. elegans, and found that human fecal microbiota transplantation can alleviate the toxic effects through activating specific pathways.
Current studies simply focus on the toxicity of nano-plastics, while the correlation between their toxicity and biodistribution, as well as intestinal microorganisms is still blank. Therefore, we systematically evaluated the toxicity based on the accumulation characteristics of nano-plastics in C. elegans. Meanwhile, for the first time, human fecal microbiota was transplanted into the gut of C. elegans and found that nano-plastics can through the intestinal barrier to the whole body after oral intake and can't be drastically excreted until die, thus causing toxic effects; while human fecal microbiota transplantation can significantly improve the living state via activating PMK-1/SKN-1 pathway to promote the production of intracellular glutathione, and exogenous glutathione addition can also markedly protect nematodes against nano-plastics induced toxicity. Our results not only provide a fully understand between the accumulation characteristic and health risk of nano-plastics, but also take C. elegans and intestinal flora into the field of toxicity evolution of nanomaterials. (c) 2021 Elsevier B.V. All rights reserved.
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