Summary
Aspirin (acetylsalicylic acid), the first of the NSAIDs (introduced in 1899), was initially never referred to as an anti-inflammatory agent. It was the advent of cortisone in 1949 that demonstrated dramatically that corticosteroids had anti-inflammatory properties and the term ‘non-steroidal anti-inflammatory drug’ was first used when phenylbutazone was introduced 3 years later. Since then, the NSAIDs have proliferated. There is to date no good evidence that they halt progression of rheumatoid disease, but by easing pain and diminishing swelling they make life much easier in osteoarthrosis, rheumatoid arthritis and many other types of arthritis, and are the drugs of first choice in acute gout. Their mode (or modes) of action are obscure and though inhibition of cyclo-oxygenase (prostaglandin synthetase) is clearly important, other mechanisms are also involved.
The assessment of the anti-inflammatory action of these agents has received considerable attention in clinical trials because, whatever their action may be in experimental animal models, their action in inflamed joints in human patients must be ascertained, since there may be little parallel between the two. Different experimental animal models give different results with various agents and often bear little relation to their therapeutic action in man. No attempt has been made here to review in depth all the NSAIDs that have appeared since 1952. All have anti-inflammatory and analgesic activity and all can cause gastrointestinal side effects, though effectiveness and toxicity vary from drug to drug and patient to patient, there being very great interpatient variability. Non-reactors, patients who apparently fail to respond to certain agents, need further study, for it seems that these subjects may metabolise these agents differently from others.
Considerable ingenuity has been shown not only in evolving new NSAIDs but in finding new ways of administering them. The number and variety of NSAIDs in their various forms varies greatly from country to country, depending largely on the regulatory bodies of those countries. In the meantime, the search for a better, less toxic compound continues with the hope that one may be found which has a deeper and more basic action on the underlying disease process.
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Hart, F.D., Huskisson, E.C. Non-Steroidal Anti-Inflammatory Drugs. Drugs 27, 232–255 (1984). https://doi.org/10.2165/00003495-198427030-00004
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DOI: https://doi.org/10.2165/00003495-198427030-00004