Lower level of synovial fluid interferon-gamma in HLA-B27-positive than in HLA-B27-negative patients with Chlamydia trachomatis reactive arthritis.
- Bas S Division of Rheumatology, Department of Internal Medicine, University Hospital, Geneva, Switzerland. sylvette.bas@hcuge.ch
- Kvien TK
- Buchs N
- Fulpius T
- Gabay C
- 2003-03-11
Published in:
- Rheumatology (Oxford, England). - 2003
Adolescent
Adult
Aged
Aged, 80 and over
Arthritis, Reactive
Arthritis, Rheumatoid
Chlamydia Infections
Chlamydia trachomatis
Cytokines
Female
Follow-Up Studies
HLA-B27 Antigen
Humans
Interferon-gamma
Male
Middle Aged
Synovial Fluid
English
OBJECTIVES
To compare the synovial fluid (SF) concentrations of various cytokines in rheumatoid arthritis (RA) and in reactive arthritis, and to look for a correlation between cytokine levels and the presence of HLA-B27 antigen in reactive arthritis patients.
METHODS
Concentrations of interleukin (IL) 10, IL-12, IL-18, interferon gamma (IFN-gamma) and tumour necrosis factor alpha (TNF-alpha) were determined by commercially available enzyme-linked immunosorbent assays (ELISA) in the SF from 48 patients with reactive arthritis, 33 with RA and 13 with osteoarthritis (non-inflammatory controls).
RESULTS
The SF concentrations of IL-10 were significantly lower in patients with reactive arthritis (median 2.3 pg/ml) than in RA patients (median 14.6 pg/ml). The SF levels of IFN-gamma were not significantly different but the ratios of IFN-gamma to IL-10 were significantly higher in patients with reactive arthritis (median 9.2) than in RA patients (median 0.83). When the subset of patients with Chlamydia trachomatis reactive arthritis was considered, the SF concentration of IFN-gamma was significantly lower in HLA-B27-positive (median 2.9 pg/ml) than in HLA-B27-negative patients (median 42.4 pg/ml). After 2 yr of follow-up, two HLA-B27-positive patients, who had low SF levels of IFN-gamma, had a chronic course of arthritis, whereas after 1 yr all HLA-B27-negative patients had complete resolution of arthritis.
CONCLUSIONS
The lower IFN-gamma concentrations in HLA-B27-positive patients with C. trachomatis reactive arthritis could be related to the tendency of these patients to have more severe or chronic arthritis.
To compare the synovial fluid (SF) concentrations of various cytokines in rheumatoid arthritis (RA) and in reactive arthritis, and to look for a correlation between cytokine levels and the presence of HLA-B27 antigen in reactive arthritis patients.
METHODS
Concentrations of interleukin (IL) 10, IL-12, IL-18, interferon gamma (IFN-gamma) and tumour necrosis factor alpha (TNF-alpha) were determined by commercially available enzyme-linked immunosorbent assays (ELISA) in the SF from 48 patients with reactive arthritis, 33 with RA and 13 with osteoarthritis (non-inflammatory controls).
RESULTS
The SF concentrations of IL-10 were significantly lower in patients with reactive arthritis (median 2.3 pg/ml) than in RA patients (median 14.6 pg/ml). The SF levels of IFN-gamma were not significantly different but the ratios of IFN-gamma to IL-10 were significantly higher in patients with reactive arthritis (median 9.2) than in RA patients (median 0.83). When the subset of patients with Chlamydia trachomatis reactive arthritis was considered, the SF concentration of IFN-gamma was significantly lower in HLA-B27-positive (median 2.9 pg/ml) than in HLA-B27-negative patients (median 42.4 pg/ml). After 2 yr of follow-up, two HLA-B27-positive patients, who had low SF levels of IFN-gamma, had a chronic course of arthritis, whereas after 1 yr all HLA-B27-negative patients had complete resolution of arthritis.
CONCLUSIONS
The lower IFN-gamma concentrations in HLA-B27-positive patients with C. trachomatis reactive arthritis could be related to the tendency of these patients to have more severe or chronic arthritis.
- Language
-
- English
- Open access status
- bronze
- Identifiers
-
- DOI 10.1093/rheumatology/keg163
- PMID 12626797
- Persistent URL
- https://sonar.ch/global/documents/127813
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