Modulation of secretory processes of phagocytes by IX 207-887.

In chronic inflammation, the mediators released by phagocytes are in part responsible for the initiation and perpetuation of the disease. IX 207-887, which is a novel antiarthritic drug, inhibits the release of cytokines from mononuclear cells at concentrations which are achieved therapeutically in human rheumatoid arthritis and in animal models of arthritis. Furthermore, the production of superoxide and release of azurophil and specific granules by N-formyl-Met-Leu-Phe-stimulated neutrophils are significantly reduced. As a consequence, IX 207-887 may break the vicious circle which is manifest in chronic inflammation. In a recent double-blind placebo controlled study IX 207-887 has been shown to be an effective slow-acting drug for use in rheumatoid arthritis.