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A Modified QuEChERS-HPLC Method for Detection of Polycyclic Aromatic Hydrocarbons in Zebrafish Embryos Exposed to Fine Particulate Matter
Published on: June 13, 2025
Zebrafish embryos sequester and retain petrochemical combustion products: developmental and transcriptome
Allen Bui1, Rui Xiao, Zakia Perveen
1Department of Comparative Biomedical Sciences, Louisiana State University, School of Veterinary Medicine, Baton Rouge, LA 70803, USA. hbui2@tigers.lsu.edu
Aquatic Toxicology (Amsterdam, Netherlands)
|November 8, 2011
Summary
Zebrafish embryos exposed to butadiene soot (BDS) nanoparticles showed developmental abnormalities, including edema and malformations. These effects were linked to polynuclear aromatic hydrocarbons (PAHs) within the soot, highlighting BDS as a developmental toxicant.
Area of Science:
- Environmental toxicology
- Developmental biology
- Nanoparticle research
Background:
- Zebrafish embryos serve as a model for environmental stressor impacts on development.
- Butadiene soot (BDS) nanoparticles, formed from incomplete combustion of 1,3-butadiene, adsorb polynuclear aromatic hydrocarbons (PAHs).
- PAHs in mammalian cells accumulate in lipid droplets, inducing biotransformation, oxidative stress, and inflammatory gene responses.
Purpose of the Study:
- To investigate if PAH-rich BDS affects zebrafish embryo development.
- To determine if zebrafish embryos sequester PAHs from BDS in specific tissues.
- To correlate developmental abnormalities with altered gene expression patterns following BDS exposure.
Main Methods:
- Zebrafish embryos were exposed to varying concentrations of BDS (0-60 μg/ml) for 48 hours.
- PAH localization was visualized using fluorescence tracking.
- Developmental endpoints (edema, malformations) were assessed via microscopy.
- Gene expression changes were analyzed using microarray and qRT-PCR.
Main Results:
- PAHs were observed to localize with endogenous lipids in the yolk sac and hatching gland cells of zebrafish embryos.
- PAHs were retained in tissues for at least 8 days post-exposure.
- Significant dose-dependent increases in pericardial edema, yolk sac edema, and axial malformations were noted.
- Up-regulation of biotransformation and oxidative stress gene cascades was observed.
Conclusions:
- PAH-rich BDS induces developmental toxicity in zebrafish embryos.
- Zebrafish embryos accumulate PAHs, particularly in lipid-rich tissues.
- Gene expression changes, including biotransformation and oxidative stress pathways, are associated with BDS-induced developmental abnormalities.
- Zebrafish embryos are a valuable model for predicting developmental toxicity of PAH-contaminated petrochemical soots.
