Abstract
Therapeutic advances in rheumatoid arthritis (RA) have largely focused on the development of non-steroidal antiinflammatory drugs (NSAIDs) with improved characteristics compared with aspirin [Brooks & Day, New Engl. J. Med., 324, 1716–1725 (1991)]. For example, greater potency, safety, improved tolerance in the elderly and reduced frequency of dosing have been achieved. However, these agents are generally considered to be palliative treating of the symptoms of the disease. The development of disease modifying drugs (DMD), also known as second line drugs, for RA has not been very successful. Most of the agents that are currently used in this category were originally used to treat other diseases such as malignancy (cyclophosphamide, methotrexate), Wilson's disease ( d-penicillamine) and tuberculosis (gold salts) [Pullar, Br. J. clin. Pharmac., 30, 501–510 (1990)]. Unfortunately, none of the agents is ideal and each has potentially serious side-effects. There have been several attempts to develop agents with new mechanisms of action that hopefully will greatly improve these current therapies.
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