PUBLICATION
Tralopyril induces developmental toxicity in zebrafish embryo (Danio rerio) by disrupting the thyroid system and metabolism
- Authors
- Chen, X., Teng, M., Zhang, J., Qian, L., Duan, M., Cheng, Y., Zhao, F., Zheng, J., Wang, C.
- ID
- ZDB-PUB-201009-1
- Date
- 2020
- Source
- The Science of the total environment 746: 141860 (Journal)
- Registered Authors
- Keywords
- Developmental toxicity, Metabolomics, Thyroid endocrine disruption, Tralopyril, Zebrafish embryo
- MeSH Terms
-
- Animals
- Pyrroles
- Thyroid Gland*
- Thyroid Hormones
- Zebrafish*
- PubMed
- 33027873 Full text @ Sci. Total Environ.
- CTD
- 33027873
Citation
Chen, X., Teng, M., Zhang, J., Qian, L., Duan, M., Cheng, Y., Zhao, F., Zheng, J., Wang, C. (2020) Tralopyril induces developmental toxicity in zebrafish embryo (Danio rerio) by disrupting the thyroid system and metabolism. The Science of the total environment. 746:141860.
Abstract
Tralopyril, an antifouling biocide, widely used in antifouling systems to prevent underwater equipment from biological contamination, which can pose a potential risk to aquatic organisms and human health. However, there is little information available on the toxicity of tralopyril to aquatic organisms. Herein, zebrafish (Danio rerio) were used to investigate the toxicity mechanisms of tralopyril and a series of developmental indicators, thyroid hormones, gene expression and metabolomics were measured. Results showed that tralopyril significantly decreased the heart-beat and body length of zebrafish embryos-larvae exposed to 4.20 μg/L or higher concentrations of tralopyril and also induced developmental defects including pericardial hemorrhage, spine deformation, pericardial edema, tail malformation and uninflated gas bladder. Tralopyril decreased the thyroid hormone concentrations in embryos and changed the transcriptions of the related genes (TRHR, TSHβ, TSHR, Nkx2.1, Dio1, TRα, TRβ, TTR and UGT1ab). Additionally, metabolomics analysis showed that tralopyril affected the metabolism of amino acids, energy and lipids, which was associated with regulation of thyroid system. Furthermore, this study demonstrated that alterations of endogenous metabolites induced the thyroid endocrine disruption in zebrafish following the tralopyril treatment. Therefore, the results showed that tralopyril can induce adverse developmental effects on zebrafish embryos by disrupting the thyroid system and metabolism.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping