Expression of rabbit C‐reactive protein in transgenic mice inhibits development of antigen‐induced arthritis
- 1 January 2006
- journal article
- research article
- Published by Taylor & Francis Ltd in Scandinavian Journal of Rheumatology
- Vol. 35 (5), 351-355
- https://doi.org/10.1080/03009740600757963
Abstract
Objective: C‐reactive protein (CRP) is a plasma protein of hepatic origin thought to play an important role in host defences. We used transgenic mice, capable of expressing high levels of rabbit CRP (serum concentration>50 µg/mL) in response to dietary manipulation, to determine whether high levels of this acute‐phase reactant can alter the course of experimentally induced monoarticular arthritis. Method: Arthritis was induced by a single injection of methylated bovine serum albumin (mBSA) on day 0 followed by injections of interleukin (IL)‐1β. Results: In transgenic animals in which CRP expression had been suppressed (serum concentration50 µg/mL on the day of mBSA and IL‐1β injections, the inflammatory response was dramatically reduced at day 7. These mice manifested little to no evidence of joint inflammation. This anti‐inflammatory effect of CRP was seen in animals with high CRP levels on days 0–1 following immunization and did not require elevated CRP levels during the period of rapid inflammatory progression, 4–7 days after challenge. Conclusion: CRP, expressed at the time of antigenic stimulation, effectively blocked the subsequent development of inflammatory arthritis in this model by altering the immune or inflammatory responses.Keywords
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