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Rheumatology International

, Volume 16, Issue 4, pp 169–173 | Cite as

Relationship between interleukin-8 and neutrophil adhesion molecules in rheumatoid arthritis

  • C. M. De Gendt
  • L. S. De Clerck
  • C. H. Bridts
  • N. Van Osselaer
  • W. J. Stevens
Original Article

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.

Keywords

Interleukin-8 CD 11b CD 18 L-selectin rheumatoid arthritis 

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • C. M. De Gendt
    • 1
  • L. S. De Clerck
    • 1
  • C. H. Bridts
    • 1
  • N. Van Osselaer
    • 2
  • W. J. Stevens
    • 1
  1. 1.Department of Immunology, Allergology and RheumatologyUniversitaire instelling AntwerpenAntwerpenBelgium
  2. 2.Department of PharmacologyAntwerpenBelgium

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