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Serum Histidine in Rheumatoid Arthritis: Changes Induced by Antirheumatic Drug Therapy.

 

Serum free histidine levels were studied in 15 patients with rheumatoid arthritis treated with D-penicillamine and 15 patients treated withhydroxychloroquine for 6 months. Both drugs produced improvement in the majority of patients, measured in terms of changes in 5 clinicalparameters and plasma viscosity. A significant increase in serum histidine was observed only with D-penicillamine. This action, not seen with other specific antirheumatoid drugs may reflect a specific action of the drug.

How Reliable is ESR as a Measure of Disease Activity in Rheumatoid Arthritis Treated With Hydroxychloroquine?

 

Forty-two patients with active rheumatoid arthritis treated with hydroxychloroquine sulphate (400 mg day-1) for six months have been compared withpatients treated with D-penicillamine (n = 14), aurothiomalate (n = 13), sulphasalazine (n = 15) and chloroquine (n = 17) to compare the changes in articular index, plasma viscosity and ESR. Results indicate that while articular index and plasma viscosity show significant improvement for all treatments, the ESR fails to improve during hydroxychloroquine therapy.

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