With the clinical availability of two different approaches todecrease the activity of tumor necrosis factor (TNF), a newera in the treatment of rheumatoid arthritis has begun. In thisissue of the Journal, Weinblatt and colleagues report significantimprovement when etanercept was added to therapy with methotrexatefor patients with rheumatoid arthritis.1
TNF plays a pivotal role in the host's immune system.2 It isan important mediator of local inflammation that appears tobe vital in keeping infections localized. The release of TNF-results in local activation of vascular endothelium, releaseof nitric oxide with vasodilatation, and increased vascular. . . [Full Text of this Article]
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