Effects of allopurinol on beer-induced increases in plasma concentrations and urinary excretion of purine bases (uric acid, hypoxanthine, and xanthine)
- PMID: 16673211
- DOI: 10.1055/s-2006-925429
Effects of allopurinol on beer-induced increases in plasma concentrations and urinary excretion of purine bases (uric acid, hypoxanthine, and xanthine)
Abstract
To determine the effects of allopurinol on beer-induced increases in plasma and urinary excretion of purine bases (hypoxanthine, xanthine, and uric acid), we performed three experiments on five healthy study participants. In the first experiment (combination study), the participants ingested beer (10 ml/kg body weight) eleven hours after taking allopurinol (300 mg). In the second experiment (beer-only study), the same participants ingested beer (10 ml/kg body weight) alone, while in the third experiment (allopurinol-only study), they took allopurinol (300 mg) alone. There was a two-week interval between each of the studies. Beer-induced increases in plasma concentration and urinary excretion of hypoxanthine in the combination study were markedly higher than those in the beer-only study. On the other hand, the sum of increases in plasma concentrations of purine bases in the beer-only study was greater than in the combination study, whereas the increase in plasma uridine concentration in the combination study did not differ from the beer-only study. In addition, allopurinol administration inhibited the beer-induced increase in plasma concentration of uric acid. These results suggest that abrupt adenine nucleotide degradation may increase plasma concentration and urinary excretion of hypoxanthine under conditions of low xanthine dehydrogenase activity, which is mostly ascribable to allopurinol. Further, the difference in the sum of increases in plasma concentrations of purine bases between the combination study and beer-only study was largely ascribable to a greater increase in urinary excretion of hypoxanthine in the combination study. In addition, allopurinol intake seems to be effective in controlling the rapid increase in plasma uric acid caused by ingestion of alcoholic beverages.
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