PUBLICATION
Parental and transgenerational impairments of thyroid endocrine system in zebrafish by 2,4,6-tribromophenol
- Authors
- Zhou, Y., Fu, J., Wang, M., Guo, Y., Yang, L., Han, J., Zhou, B.
- ID
- ZDB-PUB-221002-9
- Date
- 2023
- Source
- Journal of environmental sciences (China) 124: 291-299 (Journal)
- Registered Authors
- Zhou, BingSheng
- Keywords
- 2,4,6-tribromophenol, Novel brominated flame retardant, Thyroid endocrine disruption, Transgenerational toxicity, Zebrafish
- MeSH Terms
-
- Animals
- Endocrine Disruptors*/toxicity
- Flame Retardants*/toxicity
- Humans
- Larva
- Phenols
- Thyroid Gland
- Thyroid Hormones
- Water Pollutants, Chemical*/toxicity
- Zebrafish
- PubMed
- 36182138 Full text @ J. Environ. Sci. (China).
Citation
Zhou, Y., Fu, J., Wang, M., Guo, Y., Yang, L., Han, J., Zhou, B. (2023) Parental and transgenerational impairments of thyroid endocrine system in zebrafish by 2,4,6-tribromophenol. Journal of environmental sciences (China). 124:291-299.
Abstract
Many environmental contaminants could be transmitted from parents and generate impairments to their progeny. The 2,4,6-tribromophenol (TBP), a novel brominated flame retardant which has been frequently detected in various organisms, was supposed to be bioaccumulated and intergenerational transmitted in human beings. Previous studies revealed that TBP could disrupt thyroid endocrine system in zebrafish larvae. However, there is no available data regarding the parental and transgenerational toxicity of this contaminant. Thus, in this study adult zebrafish were exposed to environmental contaminated levels of TBP for 60 days to investigate the parental and transgenerational impairments on thyroid endocrine system. Chemical analysis verified the bioaccumulation of TBP in tested organs of parents (concentration: liver>gonads>brain) and its transmission into eggs. For adults, increased thyroid hormones, disturbed transcriptions of related genes and histopathological changes in thyroid follicles indicate obvious thyroid endocrine disruptions. Transgenerational effects are indicated by the increased thyroid hormones both in eggs (maternal source) and in developed larvae (newly synthesized), as well as disrupted transcriptional profiles of key genes in HPT axis. The overall results suggest that the accumulated TBP could be transmitted from parent to offspring and generate thyroid endocrine disruptions in both generations.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping