PUBLICATION
Effects of 2-ethylhexyl-4-methoxycinnamate (EHMC) on thyroid hormones and genes associated with thyroid, neurotoxic, and nephrotoxic responses in adult and larval zebrafish (Danio rerio)
- Authors
- Chu, S., Kwon, B.R., Lee, Y.M., Zoh, K.D., Choi, K.
- ID
- ZDB-PUB-201212-7
- Date
- 2021
- Source
- Chemosphere 263: 128176 (Journal)
- Registered Authors
- Choi, Kyungho
- Keywords
- EHMC, Endocrine disruption, Nephrotoxicity, Neurotoxicity, Thyroid hormone, Zebrafish
- MeSH Terms
-
- Animals
- Cinnamates
- Larva/genetics
- Male
- Thyroid Gland*
- Thyroid Hormones
- WT1 Proteins
- Zebrafish*/genetics
- Zebrafish Proteins/genetics
- PubMed
- 33297144 Full text @ Chemosphere
Citation
Chu, S., Kwon, B.R., Lee, Y.M., Zoh, K.D., Choi, K. (2021) Effects of 2-ethylhexyl-4-methoxycinnamate (EHMC) on thyroid hormones and genes associated with thyroid, neurotoxic, and nephrotoxic responses in adult and larval zebrafish (Danio rerio). Chemosphere. 263:128176.
Abstract
One of the most widely used UV filters, 2-ethylhexyl-4-methoxycinnamate (EHMC), has been widely detected in the environment. While its endocrine disruption potential has often been reported, toxicological information on EHMC is limited. This study was conducted to determine the thyroid, neurological and renal toxicity potentials of EHMC in adult male and embryo-larval zebrafish (Danio rerio). Following 21 d of exposure, plasma T3 concentration decreased in a concentration-dependent manner in adult zebrafish. Several genes related to thyroid hormone regulation were also downregulated in the brain, thyroid, and liver of the adult fish. In addition, upregulation of syn2a in the brain and downregulation of podocin and wt1a in the kidney were observed following the exposure in adult fish. In zebrafish larvae, following 120 h exposure to EHMC, whole-body T3 and T4 contents decreased, and thyroid hormone-related genes were downregulated. However, several genes showed different patterns of transcription in the larvae; for example, mbp and etv1 genes were downregulated and podocin was upregulated. Unlike adult fish, the larval fish showed significant genetic changes related to neurotoxicity. The hypothyroidism induced in the larval fish by the exposure might be potentially associated with the neurotoxic potential of EHMC. The implications of the observed hormonal and transcriptional-level changes in zebrafish at different life stages following long-term exposure warrant further investigation.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping