Deletion of TRPA1 Ion Channel Modulates the Central Stress Responses in a Mouse Model of Posttraumatic Stress Disorder - PubMed
4 hours ago
- #PTSD
- #TRPA1
- #neuroinflammation
- TRPA1 ion channel deletion affects central stress responses in a PTSD mouse model.
- PTSD involves stress-regulating regions like locus coeruleus (LC) and paraventricular nucleus (PVN).
- Clonidine inhibits LC activity, reducing PTSD symptoms, suggesting noradrenergic involvement.
- TRPA1 is linked to neuroinflammation and stress adaptation.
- Foot shock PTSD model used in Trpa1 wild-type (WT) and knockout (KO) mice.
- Stress increased LC tyrosine hydroxylase (TH) and PVN glial activation.
- Trpa1 KO mice showed exaggerated LC/TH responses but reduced PVN astrocyte activation.
- Clonidine increased freezing and decreased jumping (hyperarousal marker) in WT mice.
- KO mice showed enhanced jumping and no response to clonidine.
- Corticosterone levels remained unchanged in both groups.
- TRPA1 may regulate LC noradrenergic output and PVN neuroinflammation in PTSD.