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The cloning of cytokine cDNAs has permitted the analysis of cytokine expression in diseased sites such as rheumatoid joints. A very wide range of cytokines were detected, mostly with proinflammatory activities. From the analysis of cytokine regulation in rheumatoid joint cell cultures using neutralizing anti-cytokine antibodies, it was found that blockade of TNF alpha reduced the production of other proinflammatory cytokines. Hence TNF alpha was a potential therapeutic target. This concept was tested successfully in collagen induced arthritis in mice and led to clinical trials of anti-TNF alpha antibody in rheumatoid arthritis (RA) in humans. The mechanism of action of anti-TNF alpha will be discussed.


Journal article


J Inflamm

Publication Date





90 - 96


Animals, Antibodies, Arthritis, Rheumatoid, Cytokines, Humans, Mice, Tumor Necrosis Factor-alpha