Trial reportEuropean journal of clinical pharmacology2004
Effects of SCH27899 (Ziracin), an oligosaccharide everninomicin antibiotic, on urate kinetics in humans.
Trial report in European journal of clinical pharmacology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors at 5 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
objectiveIntravenous administration of an everninomicin antibiotic, SCH27899 (Ziracin), in healthy subjects caused a marked decrease in serum urate by increasing its urinary excretion, as well as an increase in serum bilirubin in a dose-dependent manner. To clarify the underlying mechanism, a crossover study and an in vitro study were conducted.
methodsCrossover study was performed in nine healthy male volunteers over three periods by administering SCH27899 (1-h i.v. infusion of 3 mg/kg) alone, probenecid (2000 mg, p.o.) alone and their combination. Also, an in vitro experiment was conducted using rat brush-border membrane vesicles to elucidate the effect of SCH27899 on urate transport across renal tubular epithelium.
resultsSCH27899 alone and probenecid alone showed a uricosuric, serum urate-lowering effect, and, when given in combination, the effects on serum urate appeared to be additive, as indicated in the earlier phase, prior to the peaks of respective drug effects. Serum and urinary concentrations of SCH27899 were not influenced by the co-administration of probenecid. Serum bilirubin was also significantly increased by both SCH27899 alone and in combination with probenecid. The SCH27899-probenecid combination additive effect on serum bilirubin did not reach significance. SCH27899, probenecid and losartan, an angiotensin-II-receptor antagonist possessing a uricosuric effect, significantly inhibited (14)C-urate uptake into the vesicles, which was dependent on the pH gradient across the membrane; whereas, vancomycin did not.
conclusionIt is concluded that SCH27899 itself contributes, at least in part, to a uricosuric effect following i.v. infusion. However, some metabolite(s) may also contribute to this, since the degree of urate-uptake inhibition by SCH27899 was less than probenecid and losartan, and the serum urate-lowering effect was delayed and prolonged compared with the time profile of serum concentration.
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