Gene Expression of Drug Metabolizing Enzymes in Mice Across Life Stages
Author Information
Author(s): Lee Janice S., Ward William O., Liu Jie, Ren Hongzu, Vallanat Beena, Delker Don, Corton J. Christopher
Primary Institution: National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency
Hypothesis
Differences in responses to environmental chemicals and drugs between life stages are due to differences in the expression of xenobiotic metabolizing enzymes and transporters.
Conclusion
The study found significant differences in the expression of xenobiotic metabolizing enzymes in mice, particularly during fetal and neonatal stages, which can influence responses to environmental chemicals and drugs.
Supporting Evidence
- Xenobiotic metabolizing enzymes showed significant expression changes during fetal and neonatal stages.
- Most XMET genes were underexpressed in the fetus and neonate compared to adults.
- Gender-dependent expression patterns were observed in many XMET genes.
- Subtle changes in XMET expression were noted in aged mice compared to young adults.
Takeaway
Mice's ability to process drugs and chemicals changes a lot as they grow up, especially when they are babies, which means they might react differently to medicines than adults do.
Methodology
Full-genome microarrays were used to analyze mRNA expression of xenobiotic metabolizing enzymes in mouse livers at various life stages.
Potential Biases
Potential bias due to the use of specific mouse strains and the controlled laboratory environment.
Limitations
The study primarily focused on male mice, which may limit the generalizability of the findings to females.
Participant Demographics
C57BL/6J and C3H/HeJ male mice at various life stages.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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