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Rational use of disease-modifying antirheumatic drugs.

Abstract：

:The currently available, most frequently used disease-modifying antirheumatic drugs (DMARDs) include auranofin, azathioprine, D-penicillamine, gold sodium thiomalate, hydroxychloroquine, methotrexate (amethopterin) and sulphasalazine. Controlled trials of these agents are reviewed to compare their relative efficacy and tolerability. Tender joint counts decreased with all drugs, as did joint swelling (measured as the percentage of patients with greater than or equal to 50% improvement in joint swelling). Tender joint count decreased by 8 to 57% in drug-treated patients, compared with 3 to 30% (1 study exceeded this degree of placebo response) in the placebo groups. The ratio of drug to placebo improvement usually averaged greater than 2. A 50% improvement in joint swelling occurred in between 15 and 65% of drug-treated patients. Time to onset of response varied from 6 weeks (with methotrexate) to as long as 18 months (some patients on hydroxychloroquine). The remission rate was inconsistent and unusual in controlled studies (5 to 7%), but very high in some open studies (e.g. 43%). While up to 8% of patients on DMARDs stopped therapy secondary to unsatisfactory therapeutic response (with 1 exception) up to 43% of placebo patients discontinued therapy for this reason. The ratio of dropouts for unsatisfactory therapeutic response for DMARD compared to placebo was less than 1 in 16 of 22 studies, and it was usually less than 0.5. Laboratory data examined include ESR, rheumatoid factor (RF), immunoglobulins and radiographic data. Ratios of decreases in ESR, comparing drug and placebo, were usually greater than 2. ESRs decreased from 3.6 to 27 mm/h, with gold sodium thiomalate, auranofin and methotrexate being most effective relative to placebo. RF decreased by greater than or equal to 2 tube dilutions in 15 to 53% of the DMARD groups but also decreased in up to 26% of placebo patients, with ratios of drug: placebo usually greater than 2. Immunoglobulins tended to decrease with DMARDs but the data are fragmentary. Radiographic evidence that a drug slows the rate of bony damage is strong evidence that it is a DMARD. These data, however, are not easily available because measurements of bony damage is insensitive and difficult. The best evidence of radiographic efficacy exists for gold, although the data are not uniform even here. Studies with other DMARDs suffer from lack of convincing control populations, methodological failures or small numbers, although trends exist showing that azathioprine and D-penicillamine (and perhaps sulphasalazine and methotrexate) may also slow bony deterioration. The other side of efficacy, of course, is tolerability.(ABSTRACT TRUNCATED AT 400 WORDS)

journal_name

Drugs

journal_title

Drugs

authors

Furst DE

doi

10.2165/00003495-199039010-00003

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

19-37

issue

eissn

0012-6667

issn

1179-1950

journal_volume

pub_type

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Rational use of disease-modifying antirheumatic drugs.