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  • Title: Metabolism of pyrazinamide and allopurinol in hereditary xanthine oxidase deficiency.
    Author: Yamamoto T, Higashino K, Kono N, Kawachi M, Nanahoshi M, Takahashi S, Suda M, Hada T.
    Journal: Clin Chim Acta; 1989 Feb 28; 180(2):169-75. PubMed ID: 2731378.
    Abstract:
    The metabolism of pyrazinamide and allopurinol was studied in three xanthinuric patients from two families with hereditary xanthinuria to determine whether both substrates were oxidized only by xanthine oxidase or by other oxidases as well. One xanthinuric patient could neither metabolize pyrazinamide into 5-hydroxypyrazinamide nor allopurinol into oxypurinol. Two xanthinuric patients could metabolize both pyrazinamide into 5-hydroxypyrazinamide and allopurinol into oxypurinol but could not oxidize pyrazinoic acid to 5-hydroxypyrazinoic acid. These findings suggest that xanthinuria comprises at least two subgroups.
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