Assessing Xenoestrogens Using Zebrafish and Estrogen Receptors
Author Information
Author(s): Yann Le Page, Martin Scholze, Olivier Kah, Farzad Pakdel
Primary Institution: Université de Rennes, France
Hypothesis
Can xenoestrogens affect estrogen receptor activity in zebrafish glial cells?
Conclusion
The study demonstrates that a new bioassay effectively evaluates the estrogenic potency of endocrine disruptors in a glial cell context.
Supporting Evidence
- Zebrafish brain Aro-B gene expression is a sensitive biomarker for xenoestrogens.
- All tested xenoestrogens stimulated Aro-B gene expression in vivo.
- ER-α was found to be more efficient than ER-β subtypes in activating the Aro-B reporter gene.
Takeaway
This study shows that certain chemicals can mimic estrogen and affect fish brain cells, which is important for understanding pollution's impact on wildlife.
Methodology
The study used a glial cell line transfected with zebrafish estrogen receptors and exposed to various xenoestrogens to measure gene expression.
Limitations
The assay is based on a heterologous cell context, which may not fully reflect in vivo conditions.
Participant Demographics
Juvenile zebrafish aged 18-21 days were used for the in vivo experiments.
Statistical Information
P-Value
1.4 × 10−9
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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