Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity

Microplastics (MPs) are rapidly colonized by microbial biofilms in a natural aquatic environment, and the nature of the microbial community and type of MP can result in different degradation products of organic pollutants. Here, we quantified the degradation products of a ubiquitously detected pollu...

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Autores principales:	Qiqing Chen, Xiyang Zhang, Qiang Xie, Young Hwan Lee, Jae-Seong Lee, Huahong Shi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	PBDEs Microplastics Biofilm Endocrine disruption Environmental pollution TD172-193.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/56ea4f4ab0694624bbd4e6dfb71a9082
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spelling	oai:doaj.org-article:56ea4f4ab0694624bbd4e6dfb71a90822021-11-18T04:43:18ZMicroplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity0147-651310.1016/j.ecoenv.2021.112991https://doaj.org/article/56ea4f4ab0694624bbd4e6dfb71a90822021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321011039https://doaj.org/toc/0147-6513Microplastics (MPs) are rapidly colonized by microbial biofilms in a natural aquatic environment, and the nature of the microbial community and type of MP can result in different degradation products of organic pollutants. Here, we quantified the degradation products of a ubiquitously detected pollutant, decabrominated diphenyl ether (BDE-209), under both light-only and biota conditions and in the absence or presence of three kinds of MPs, styrofoam polystyrene, hard polyamide, and polypropylene film. The results showed that the BDE-209 concentration increased by 0.7–2.8 fold in the presence of MPs, probably due to the “sustained release” desorption effect. Under light-only conditions, the penta- and hexa-BDE concentrations in the presence of styrofoam or hard MPs were significantly reduced, which can be deemed a beneficial effect. However, when biota were present, the debromination products increased with the addition of MPs, particularly in the presence of styrofoam MPs. These products caused a 1.7-fold upregulation in triiodothyronine content and a 5.9-fold upregulation of thyroid stimulating hormone β expression in zebrafish larvae. The increase in debromination products could be attributed to the distinct high abundance of the bacteria Chloroflexi, Proteobacteria, and Basidiomycotina on styrofoam MPs that can participate in pollutant degradation. Collectively, our results indicate that MPs can alter the degradation pathways of BDE-209 and increase the toxicity to the endocrine system and the thyroid in aquatic organisms.Qiqing ChenXiyang ZhangQiang XieYoung Hwan LeeJae-Seong LeeHuahong ShiElsevierarticlePBDEsMicroplasticsBiofilmEndocrine disruptionEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 228, Iss , Pp 112991- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PBDEs Microplastics Biofilm Endocrine disruption Environmental pollution TD172-193.5 Environmental sciences GE1-350
spellingShingle	PBDEs Microplastics Biofilm Endocrine disruption Environmental pollution TD172-193.5 Environmental sciences GE1-350 Qiqing Chen Xiyang Zhang Qiang Xie Young Hwan Lee Jae-Seong Lee Huahong Shi Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
description	Microplastics (MPs) are rapidly colonized by microbial biofilms in a natural aquatic environment, and the nature of the microbial community and type of MP can result in different degradation products of organic pollutants. Here, we quantified the degradation products of a ubiquitously detected pollutant, decabrominated diphenyl ether (BDE-209), under both light-only and biota conditions and in the absence or presence of three kinds of MPs, styrofoam polystyrene, hard polyamide, and polypropylene film. The results showed that the BDE-209 concentration increased by 0.7–2.8 fold in the presence of MPs, probably due to the “sustained release” desorption effect. Under light-only conditions, the penta- and hexa-BDE concentrations in the presence of styrofoam or hard MPs were significantly reduced, which can be deemed a beneficial effect. However, when biota were present, the debromination products increased with the addition of MPs, particularly in the presence of styrofoam MPs. These products caused a 1.7-fold upregulation in triiodothyronine content and a 5.9-fold upregulation of thyroid stimulating hormone β expression in zebrafish larvae. The increase in debromination products could be attributed to the distinct high abundance of the bacteria Chloroflexi, Proteobacteria, and Basidiomycotina on styrofoam MPs that can participate in pollutant degradation. Collectively, our results indicate that MPs can alter the degradation pathways of BDE-209 and increase the toxicity to the endocrine system and the thyroid in aquatic organisms.
format	article
author	Qiqing Chen Xiyang Zhang Qiang Xie Young Hwan Lee Jae-Seong Lee Huahong Shi
author_facet	Qiqing Chen Xiyang Zhang Qiang Xie Young Hwan Lee Jae-Seong Lee Huahong Shi
author_sort	Qiqing Chen
title	Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
title_short	Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
title_full	Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
title_fullStr	Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
title_full_unstemmed	Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
title_sort	microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/56ea4f4ab0694624bbd4e6dfb71a9082
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Microplastics habituated with biofilm change decabrominated diphenyl ether degradation products and thyroid endocrine toxicity

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