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- Title
Presence of NAP-1/IL-8 in Synovial Fluids Indicates a Possible Pathogenic Role in Rheumatoid Arthritis.
- Authors
Peichl, P.; Ceska, M.; Effenberger, F.; Haberhauer, G.; Broell, H.; Lindley, I. J. D.
- Abstract
The synovial fluid in affected joints of rheumatiod arthritis (RA) patients contains many cells, in numbers strongly correlated with the severity of disease. As the disease worsens and the cell count increases, the polymorphonuclear leucocyte becomes the predominant cell type. Although the inflammatory cytokines interleukin 1 (IL-1) and tumour necrosis factor (TNF) have no direct neutrophil-attractant activity, they are both potent inducers of interleukin 8 (IL-8) in a variety of cell types, Chemotactic attraction of neutrophils is a major activity of IL-8. Examination of a number of synovial fluids showed that significant levels of IL-8 are present in a high proportion of RA cases (10 out of 17), at concentrations directly related to the number of cells in the joint, and to circulating C-reactive protein (CRP) levels. The cytokine is present only at background levels in other discuses accompanied by arthritic manifestations, including systemic lupus erythematosus (SLE) and induced arthritis. The progressive joint destruction seen in all cases where high IL-8 levels were measured, coupled with the neutrophil-rich cell count and the strong correlation between concentration of IL-8 and both serum CRP and cellular influx in to the joint, is strongly suggestive of a pathogenic role for IL-S in RA.
- Subjects
ARTHRITIS; SYNOVIAL fluid; JOINT diseases; FLUID mechanics; AUTOIMMUNE diseases; RHEUMATOID arthritis
- Publication
Scandinavian Journal of Immunology, 1991, Vol 34, Issue 3, p333
- ISSN
0300-9475
- Publication type
Article
- DOI
10.1111/j.1365-3083.1991.tb01554.x