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At least 919 records · Page 51Linked to original sources
PubMed1986

Inhibition of rat neutrophil functional responses by azapropazone, an anti-gout drug.

Azapropazone at concentrations of 0.1 to 1 mM inhibited by 30-70% rat neutrophil migration, aggregation, and degranulation in response to the synthetic chemotactic peptide fMet-Leu-Phe. Binding studies using fNle-Leu-[3H]Phe, a radiolabeled analog of fMet-Leu-Phe, showed that azapropazone did not inhibit these responses by interfering with fMet-Leu-Phe binding. Azapropazone also decreased both the apparent rate of production and maximal levels of superoxide anion (O2-) generated by cells stimulated with 100 ng/ml phorbol-12-myristate-13-acetate (PMA). The concentrations of azapropazone that inhibit these neutrophil responses in vitro approximate those previously found in vivo after administration of therapeutic doses of drug to rats or humans. Taken together, the data suggest that the efficacy of azapropazone in gouty arthritis may be partly due to its ability to inhibit key neutrophil functional responses in vivo.

Animals↗
PubMed1990

Substituted cyclic imides as potential anti-gout agents.

N-substituted cyclic imides of phthalimide, 2,3-dihydrohalazine-1,4-dione, and diphenimide were shown to reduce the serum uric acid levels in normal and hyperuric mice at 20 mg/kg/day I.P. for 14 days. The agents were potent inhibitors of commercial xanthine dehydrogenase and xanthine oxidase enzyme activities with IC50 values from 10(-7) to 10(-8) M concentrations of drug.

Allopurinol↗