Is interleukin-18 useful for monitoring rheumatoid arthritis?

Bokarewa, Maria,1963Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research (författare)

OBJECTIVE: Interleukin-18 (IL-18) is a proinflammatory regulator of immune responses. Its similarities to IL-1beta and ability to induce tumour necrosis factor-alpha (TNF-alpha) make it potentially important in the pathogenesis of rheumatoid arthritis (RA). METHODS: The level of IL-18 was assessed in matched pairs of blood and synovial fluid samples from 90 RA patients (47 erosive, 43 non-erosive) by an enzyme-linked immunosorbent assay (ELISA), and the results compared to 40 healthy controls. RESULTS: In RA patients with erosive joint disease, the IL-18 level was higher than that in non-erosive RA [(median+/-QR) blood: 385+/-200 vs. 235+/-183 pg/mL, p = 0.02; synovial fluid: 392+/-392 vs. 224+/-324 pg/mL, p = 0.05]. IL-18 levels in blood of RA patients were similar and closely related to the local, intra-articular level (r = 0.96). The IL-18 level was not related to other markers of inflammation, to the duration of RA, or to the treatment modality. The IL-18 level in RA patients was similar to that of the controls (278+/-234 vs. 344+/-179 pg/mL, not significant). CONCLUSIONS: An increased IL-18 level is associated with erosive joint disease, but the measurement of IL-18 does not help to distinguish between RA patients and healthy controls.

Hultgren, Olof H.,1970Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology(Swepub:gu)xhulol (författare)
Göteborgs universitetInstitutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning (creator_code:org_t)

Ingår i:Scandinavian journal of rheumatology: Informa UK Limited34:6, s. 433-60300-97421502-7732

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