Effects of Prenatal Stress in Mice with a Serotonin Transporter Deficiency
Author Information
Author(s): Van den Hove Daniel, Jakob Sissi Brigitte, Schraut Karla-Gerlinde, Kenis Gunter, Schmitt Angelika Gertrud, Kneitz Susanne, Scholz Claus-Jürgen, Wiescholleck Valentina, Ortega Gabriela, Prickaerts Jos, Steinbusch Harry, Lesch Klaus-Peter
Primary Institution: Institute of Molecular Psychiatry, University of Wuerzburg, Germany
Hypothesis
The study investigates whether the effects of prenatal stress are dependent on the serotonin transporter genotype in mice.
Conclusion
The study suggests that while the serotonin transporter deficiency may enhance memory performance and reduce anxiety, it also increases vulnerability to depressive-like behavior when exposed to prenatal stress, particularly in female offspring.
Supporting Evidence
- 5-Htt +/− offspring showed enhanced memory performance compared to wild-type offspring.
- Prenatal stress was associated with increased depressive-like behavior in 5-Htt +/− mice, especially in females.
- Gene expression profiles indicated that both the 5-Htt genotype and prenatal stress affected various signaling pathways in the hippocampus.
Takeaway
Mice with a specific genetic change can remember things better and feel less anxious, but if they experience stress before they are born, they might feel sadder later on.
Methodology
The study used a maternal restraint stress paradigm to assess the effects of prenatal stress on cognition, anxiety, and depressive-like behavior in wild-type and 5-Htt deficient mice, followed by gene expression profiling.
Potential Biases
The study design may introduce biases due to the specific breeding schemes and environmental conditions affecting the mice.
Limitations
The study's findings may be influenced by the isolated housing conditions of the mice and the potential effects of behavioral testing on gene expression.
Participant Demographics
The study involved male and female C57BL6 wild-type and 5-Htt deficient mice.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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