Acetylator phenotype and adverse effects of sulphasalazine in healthy subjects.

Inhibition of cell mediated cytotoxicity by sulphasalazine: effect of in vivo treatment with 5-aminosalicylic acid and sulphasalazine on in vitro natural killer cell activity.

Decreased cell mediated cytotoxicity occurs frequently in inflammatory bowel disease, particularly in patients with active disease. It is not clear, however, whether this decrease is caused by the disease or is a consequence of the medical treatment. In this study we evaluated the effect of in vivo treatment with 5-aminosalicylic acid and sulphasalazine on the in vitro natural killer cell activ...

Agranulocytosis associated with sulphasalazine therapy.

A case report of a patient with agranulocytosis associated with sulphasalazine therapy is described. Recovery followed supportive therapy and withdrawal of the drug. Investigations including tests for leucocyte antibodies, the presence of which might have suggested an immunological cause for the drug reaction, were negative; an acetylation study, however, characterized the patient as a 'slow' a...

Effect of acetylator phenotype on efficacy and toxicity of sulphasalazine in rheumatoid arthritis.

A group of 54 patients with rheumatoid arthritis (31 fast, 23 slow acetylators) treated with sulphasalazine 3 g/day were studied retrospectively. At 24 weeks no difference in the efficacy of the drug could be shown between fast and slow acetylators. In a second prospective study 40 fast acetylators were allocated to 3 g/day and 20 slow acetylators to 1.5 g/day. At 24 weeks marked improvement wa...

Sulphasalazine in rheumatoid arthritis: a double blind comparison of sulphasalazine with placebo and sodium aurothiomalate.

Uncontrolled studies have suggested that sulphasalazine may be an effective second line agent in rheumatoid arthritis. Sulphasalazine was therefore compared with placebo and intramuscular sodium aurothiomalate in 90 patients with active rheumatoid arthritis. After six months' treatment both sulphasalazine and sodium aurothiomalate had produced significant clinical and laboratory benefit, wherea...

The effect of the acetylator phenotype on the metabolism of sulphasalazine in man.