Related Experiment Video
Updated: Jun 12, 2026
07:06
Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae
Published on: February 5, 2020
Exposure to fenvalerate causes brain impairment during zebrafish development
Aihua Gu1, Xiangguo Shi, Chen Yuan
1Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 210029, China.
Toxicology Letters
|June 24, 2010
Summary
Fenvalerate exposure causes developmental neurotoxicity in zebrafish, leading to brain abnormalities and impaired neurogenesis. This study highlights the compound's potential risks during early development.
Area of Science:
- Environmental Toxicology
- Developmental Biology
- Neuroscience
Background:
- Fenvalerate is a known neurotoxicant in adults.
- Limited data exists on its developmental toxicity.
- Zebrafish are a valuable model for environmental monitoring.
Purpose of the Study:
- To investigate the developmental toxicity of fenvalerate using zebrafish.
- To explore fenvalerate's impact on embryonic and larval brain development.
- To understand the mechanisms underlying fenvalerate-induced neurotoxicity.
Main Methods:
- Zebrafish embryos and larvae were exposed to varying concentrations of fenvalerate.
- Morphological abnormalities and LC50 values were determined.
- Acridine orange staining assessed apoptosis.
- Superoxide dismutase (SOD) activity and gene expression (ogg1, dlx2) were analyzed.
Main Results:
- Fenvalerate exposure caused significant morphological abnormalities in zebrafish larvae.
- Apoptosis was observed primarily in the brain.
- SOD activity was altered in a concentration- and time-dependent manner.
- Down-regulation of ogg1 and dlx2 gene expression indicated impaired DNA repair and neurogenesis.
Conclusions:
- Fenvalerate exposure during embryogenesis leads to observable brain impairment in zebrafish.
- The findings provide evidence for fenvalerate's developmental neurotoxicity.
- This research underscores the need for caution regarding fenvalerate exposure during development.
