| First Author | Vergnolle N | Year | 2001 |
| Journal | Nat Med | Volume | 7 |
| Issue | 7 | Pages | 821-6 |
| PubMed ID | 11433347 | Mgi Jnum | J:127006 |
| Mgi Id | MGI:3762475 | Doi | 10.1038/89945 |
| Citation | Vergnolle N, et al. (2001) Proteinase-activated receptor-2 and hyperalgesia: A novel pain pathway. Nat Med 7(7):821-6 |
| abstractText | Using a combined pharmacological and gene-deletion approach, we have delineated a novel mechanism of neurokinin-1 (NK-1) receptor-dependent hyperalgesia induced by proteinase-activated receptor-2 (PAR2), a G-protein-coupled receptor expressed on nociceptive primary afferent neurons. Injections into the paw of sub-inflammatory doses of PAR2 agonists in rats and mice induced a prolonged thermal and mechanical hyperalgesia and elevated spinal Fos protein expression. This hyperalgesia was markedly diminished or absent in mice lacking the NK-1 receptor, preprotachykinin-A or PAR2 genes, or in rats treated with a centrally acting cyclooxygenase inhibitor or treated by spinal cord injection of NK-1 antagonists. Here we identify a previously unrecognized nociceptive pathway with important therapeutic implications, and our results point to a direct role for proteinases and their receptors in pain transmission. |
