Essential role for proteinase-activated receptor-2 in arthritis

Ferrell, W.R. et al. (2003) Essential role for proteinase-activated receptor-2 in arthritis. Journal of Clinical Investigation, 111, pp. 35-41. (doi: 10.1172/JCI200316913)

Full text not currently available from Enlighten.


Using physiological, pharmacological, and gene disruption approaches, we demonstrate that proteinase-activated receptor-2 (PAR-2) plays a pivotal role in mediating chronic inflammation. Using an adjuvant monoarthritis model of chronic inflammation, joint swelling was substantially inhibited in PAR-2–deficient mice, being reduced by more than fourfold compared with wild-type mice, with virtually no histological evidence of joint damage. Mice heterozygous for PAR-2 gene disruption showed an intermediate phenotype. PAR-2 expression, normally limited to endothelial cells in small arterioles, was substantially upregulated 2 weeks after induction of inflammation, both in synovium and in other periarticular tissues. PAR-2 agonists showed potent proinflammatory effects as intra-articular injection of ASKH95, a novel synthetic PAR-2 agonist, induced prolonged joint swelling and synovial hyperemia. Given the absence of the chronic inflammatory response in the PAR-2–deficient mice, our findings demonstrate a key role for PAR-2 in mediating chronic inflammation, thereby identifying a novel and important therapeutic target for the management of chronic inflammatory diseases such as rheumatoid arthritis.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Kelso, Mrs Elizabeth and Ferrell, Professor William
Authors: Ferrell, W.R., Lockhart, J.C., Kelso, E.B., Dunning, L., Plevin, R., Meek, S.E., Smith, A.J.H., Hunter, G.D., McLean, J.S., McGarry, F., Ramage, R., Jiang, L., Kanke, T., and Kawagoe, J.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Journal of Clinical Investigation
Publisher:Americal Society for Clinical Investigation

University Staff: Request a correction | Enlighten Editors: Update this record