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Bradykinin-12-lipoxygenase-VR1 Signaling Pathway for Inflammatory Hyperalgesia

Abstract

The capsaicin-sensitive vanilloid receptor (VR1) was recently shown to play an important role in inflammatory pain (hyperalgesia), but the underlying mechanism is unknown. We hypothesized that pain-producing inflammatory mediators activate capsaicin receptors by inducing the production of fatty acid agonists of VR1. This study demonstrates that bradykinin, acting at B2 bradykinin receptors, excites sensory nerve endings by activating capsaicin receptors via production of 12-lipoxygenase metabolites of arachidonic acid. This finding identifies a mechanism that might be targeted in the development of new therapeutic strategies for the treatment of inflammatory pain.

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References
1.
Welch J, Simon S, Reinhart P . The activation mechanism of rat vanilloid receptor 1 by capsaicin involves the pore domain and differs from the activation by either acid or heat. Proc Natl Acad Sci U S A. 2000; 97(25):13889-94. PMC: 17671. DOI: 10.1073/pnas.230146497. View

2.
Veronesi B, Oortgiesen M, Roy J, Carter J, Simon S, Gavett S . Vanilloid (capsaicin) receptors influence inflammatory sensitivity in response to particulate matter. Toxicol Appl Pharmacol. 2000; 169(1):66-76. DOI: 10.1006/taap.2000.9040. View

3.
Gonzalez-Nunez D, Claria J, Rivera F, Poch E . Increased levels of 12(S)-HETE in patients with essential hypertension. Hypertension. 2001; 37(2):334-8. DOI: 10.1161/01.hyp.37.2.334. View

4.
Liang Y, Haake B, Reeh P . Sustained sensitization and recruitment of rat cutaneous nociceptors by bradykinin and a novel theory of its excitatory action. J Physiol. 2001; 532(Pt 1):229-39. PMC: 2278529. DOI: 10.1111/j.1469-7793.2001.0229g.x. View

5.
Chuang H, Prescott E, Kong H, Shields S, Jordt S, Basbaum A . Bradykinin and nerve growth factor release the capsaicin receptor from PtdIns(4,5)P2-mediated inhibition. Nature. 2001; 411(6840):957-62. DOI: 10.1038/35082088. View