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The developmental effects of pentachlorophenol on zebrafish embryos during segmentation: A systematic view
Ting Xu1,2, Jing Zhao3, Zhifa Xu2
1Post-doctoral Research Station of Civil Engineering, Tongji University, Shanghai 200092, China.
Scientific Reports
|May 17, 2016
Summary
Pentachlorophenol (PCP) exposure in zebrafish embryos disrupts development by altering metabolism and organogenesis. Gene expression changes indicate potential biomarkers for human health and ecological risk assessment.
Area of Science:
- Developmental toxicology
- Environmental science
- Transcriptomics
Background:
- Pentachlorophenol (PCP) is a widespread environmental pollutant.
- Previous research has not fully elucidated the mechanisms of PCP's developmental toxicity.
Purpose of the Study:
- To investigate the molecular mechanisms underlying pentachlorophenol's developmental toxicity using zebrafish embryos.
- To identify potential biomarkers for health and ecological risk assessment.
Main Methods:
- Zebrafish embryos were exposed to two concentrations of PCP.
- Whole-transcriptome sequencing was performed at 10 and 24 hours post-fertilization (hpf).
- Gene expression data were analyzed focusing on metabolism, transporters, and organogenesis.
Main Results:
- PCP exposure induced significant transcriptomic alterations at both 10 and 24 hpf.
- Hyperglycolysis and potential hypoxia were observed at 10 hpf.
- Somitogenesis and lens formation were disrupted at 24 hpf, linked to earlier developmental plan disruptions.
Conclusions:
- PCP's developmental toxicity involves complex interactions affecting metabolism and organogenesis.
- Gene expression profiles may serve as indicators of human health and ecological risks associated with PCP exposure.
