In vivo gene expression of type 1 and type 2 cytokines in synovial tissues from patients in early stages of rheumatoid, reactive, and undifferentiated arthritis.


It has been reported that the mRNA of the type 1 cytokine, interferon-gamma (IFN-gamma)--but not the type 2 cytokine interleukin-4 (IL-4)--is detected in synovial tissues of rheumatoid arthritis (RA) patients, whereas both IFN-gamma and IL-4 mRNA are detected in reactive arthritis (ReA). To evaluate such data more extensively, we obtained 208 synovial… (More)


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