Dopamine D1 Receptor Agonist Induces Seizures and Activates ERK in Mouse Hippocampus
Author Information
Author(s): Gangarossa Giuseppe, Di Benedetto Manuela, O'Sullivan Gerard J., Dunleavy Mark, Alcacer Cristina, Bonito-Oliva Alessandra, Henshall David C., Waddington John L., Valjent Emmanuel, Fisone Gilberto
Primary Institution: Karolinska Institutet, Stockholm, Sweden
Hypothesis
Does the activation of dopamine D1 receptors induce epileptiform activity and affect signal transduction in the hippocampus?
Conclusion
The study found that the dopamine D1 receptor agonist SKF 81297 induces seizures and activates the ERK signaling pathway in the mouse hippocampus.
Supporting Evidence
- SKF 81297 induced behavioral seizures in 75% of mice at a dose of 5.0 mg/kg.
- Electrophysiological recordings showed epileptiform discharges in the dentate gyrus after SKF 81297 administration.
- Increased phosphorylation of ERK was observed in granule cells of the dentate gyrus following SKF 81297 treatment.
Takeaway
When mice were given a special drug that activates a brain receptor, they had seizures, and scientists found changes in brain signaling that might help explain why.
Methodology
The study involved administering SKF 81297 to mice and observing behavioral seizures, electrophysiological recordings, and molecular changes in the hippocampus.
Limitations
The study primarily focused on acute effects and did not assess long-term consequences of D1 receptor activation.
Participant Demographics
Male C57BL/6 mice, 8 weeks old.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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