ISSN:
1437-160X
Keywords:
Interleukin-8
;
CD 11b
;
CD 18
;
L-selectin
;
rheumatoid arthritis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract To evaluate the role of interleukin-8 (IL-8) on the activation of neutrophils in rheumatoid arthritis (RA), we measured IL-8 and the adhesion molecules, L-selectin (CD62L), CD11b and CD18, on neutrophils in paired peripheral blood and synovial fluid of RA patients. Synovial fluid IL-8 levels were significantly increased compared to peripheral blood. L-selectin was split off and CD 11b and CD18 were upregulated on neutrophils in the synovial fluid. A positive correlation occurred between the IL-8 concentration and CD18 or CD11b densities on neutrophils in the synovial fluid (r=0.75,P 〈0.005 andr=0.60,P 〈 0.05, respectively). Peripheral blood neutrophils of the patients were desensitised with IL-8 in vivo, as shown by the significantly lower L-selectin shedding after in vitro IL-8 stimulation: 1.6 times decrease for patients vs 3.2 for controls (P 〈 0.05). In conclusion, these results add further evidence for the role of IL-8 in the activation of neutrophils in RA.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01419730
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