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Long-term follow-up of incorporation of 15N from glycine into uric acid in gout.

The incorporation of 15N-glycine into urinary uric acid was studied in three gouty patients, repeating a study carried out 13 to 27 years ago. The 15N incorporation attained a lower maximum and declined less rapidly in the repeat study in all three patients. The cumulative 15N incorporation into uric acid was reduced to one half of that determined previously. Similarly, urinary uric acid excretion was less, along with a lower uric acid nitrogen to total nitrogen ratio. The data indicate changes in the nature of the metabolic aberrations, which are apparently related to long-term drug therapy, changes in lifestyle, aging and associated medical complications.

Adult↗

Flurbiprofen in the treatment of acute gout. A comparison with indomethacin.

The relative efficacy and safety of flurbiprofen (Ansaid, Upjohn) and indomethacin were compared in 29 patients with monoarticular gouty arthritis of less than 48 hours' duration. A loading dose of 400 mg of flurbiprofen or 200 mg of indomethacin was administered for 24 hours, followed by 200 mg of flurbiprofen per day or 100 mg of indomethacin per day for a maximum of five days. Based on global assessment of improvement, at least 50 percent of patients in both treatment groups showed improvement within 24 hours. There were statistically significant improvements in pain, swelling, erythema, and skin temperature in both groups of patients within 48 hours of treatment. By 72 hours, the proportion of patients with improvement in the flurbiprofen group was equal to or greater than the proportion in the indomethacin group for all clinical efficacy parameters. At the end of treatment, eight of 15 patients in the indomethacin group and five of 14 patients in the flurbiprofen group were asymptomatic. There were no statistically significant differences between indomethacin and flurbiprofen in the percentage of asymptomatic patients at the end of treatment. Side effects were mild in both groups. No clinically significant between-treatment differences were noted in vital signs or in the results of laboratory assays.

Acute Disease↗

Desensitization to allopurinol in patients with gout and cutaneous reactions.

PURPOSE: To determine the efficacy and safety of slow oral desensitization in the management of allopurinol-related pruritic cutaneous eruptions. PATIENTS AND METHODS: Nine patients with renal insufficiency and chronic tophaceous gouty arthritis, who had to interrupt their allopurinol therapy because of an allergic-type pruritic maculopapular eruption, were enrolled in an allopurinol oral desensitization protocol using a schedule of gradually increasing doses. RESULTS: Cautious reinstitution of allopurinol was successfully accomplished in all nine patients, but four individuals required dose adjustment because of development of a mild, recurrent, macular rash early during the protocol at allopurinol doses of less than or equal to 5 mg/d. Transient, postdesensitization cutaneous reactions occurred in two patients, one of whom also had an early rash. CONCLUSION: Oral desensitization to the minor rashes induced by allopurinol is a feasible and acceptably safe approach to therapy, particularly for those with renal insufficiency in whom no substitute urate-lowering drug is available.

Administration, Oral↗