Chemical Exposures: PFOA Alters Liver Gene Expression
2006
PFOA Affects Liver Gene Expression in Rats
Sample size: 35
publication
Evidence: moderate
Author Information
Author(s): Keerthi S. Guruge, Paul K.S. Lam
Primary Institution: City University of Hong Kong
Hypothesis
Does PFOA exposure alter gene expression in the livers of lab rats?
Conclusion
PFOA exposure significantly changes the expression of over 500 genes in the livers of rats.
Supporting Evidence
- PFOA exposure was linked to changes in over 500 liver genes.
- 144 genes were affected at all dose levels.
- The largest category of affected genes controls lipid transport and metabolism.
Takeaway
When rats were given a chemical called PFOA, it changed how many of their liver genes worked, which could help explain why PFOA is linked to bad cholesterol.
Methodology
Rats were exposed to daily doses of PFOA ranging from 1 to 15 mg/kg body weight, with a control group receiving no PFOA.
Limitations
The doses used were much higher than what might be found in environmental exposure.
Participant Demographics
Seven-week-old lab rats.
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