IL-1β Stimulates COX-2 Dependent PGE2 Synthesis and CGRP Release in Rat Trigeminal Ganglia Cells
Author Information
Author(s): Lars Neeb, Peter Hellen, Carsten Boehnke, Jan Hoffmann, Sigrid Schuh-Hofer, Ulrich Dirnagl, Uwe Reuter
Primary Institution: Charité Universitätsmedizin Berlin
Hypothesis
Induced COX-2 expression leads to PGE2 production in trigeminal ganglia cells which may affect CGRP release.
Conclusion
The study identifies a COX-2 dependent pathway of cytokine induced CGRP release in trigeminal ganglia neurons that is not affected by 5-HT1B/D receptor activation.
Supporting Evidence
- IL-1β caused a dose and time dependent induction of COX-2 but not COX-1 mRNA.
- PGE2 release was significantly elevated 4 hours after IL-1β stimulation.
- CGRP release was significantly increased 24 hours after IL-1β stimulation.
Takeaway
When a certain protein called IL-1β is added to nerve cells from rats, it makes them produce another protein called COX-2, which then helps release a third protein called CGRP that is important for pain.
Methodology
Primary cultured rat trigeminal ganglia cells were stimulated with IL-1β to assess COX-2 expression and CGRP release.
Participant Demographics
3-day-old male and female Sprague Dawley rats
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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