Macrophage activation in rat models of inflammation and arthritis: Systemic activation precedes arthritis induction and progression
Open Access
- 1 September 1986
- journal article
- research article
- Published by Wiley in Arthritis & Rheumatism
- Vol. 29 (9) , 1122-1130
- https://doi.org/10.1002/art.1780290910
Abstract
The association between the induction and progression of adjuvant‐induced arthritis (AA) and the development of synovial and systemic macrophage activation was assessed by studying the temporal development of these parameters in a rat model. Rats with AA developed significant edema of the uninjected hind leg beginning 10 days post‐adjuvant injection, with progressive increases in edema continuing through day 17. Several parameters of macrophage activation, including the enhanced ability to secrete interleukin‐1 and prostaglandin E2, kill tumor cells, accumulate fluorescent cyanine dyes, emigrate into the peritoneal cavity and synovium, and express Ia antigen, as well as the decreased ability to secrete superoxide anion, were associated temporally with the development of the arthritic lesion. In addition to the temporal association between macrophage activation and development of arthritis, a positive correlation between macrophage activation and arthritis induction was seen with the use of synthetic adjuvants at arthritogenic and nonarthritogenic doses. These data taken together suggest that induction and progression of AA in rats is associated with both systemic (blood, spleen, and peritoneal cavity) and local (synovium) macrophage activation.This publication has 22 references indexed in Scilit:
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