xanthinuria

xanthinuria /xan·thin·uria/ (zan″thin-ūr´e-ah)

1. excretion of xanthine in the urine.

2. a hereditary disorder of purine metabolism due to a deficiency of the enzyme xanthine oxidase, with excessive xanthine and hypoxanthine in urine and sometimes xanthine calculi in the urinary tract.

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xan·thi·nu·ri·a (znth-nr-)

n.

1. Excretion of abnormally large amounts of xanthine in the urine.

2. An inherited metabolic disorder resulting from defective synthesis of xanthine oxidase and characterized by urinary excretion of xanthine in place of uric acid.

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xanthinuria

[zan′thinyoo͡r′ē·ə]

Etymology: Gk, xanthos + ouron, urine

1 the presence of excessive quantities of xanthine in the urine.

2 a rare disorder of purine metabolism, resulting in the excretion of large amounts of xanthine in the urine because of the absence of an enzyme, xanthine oxidase, that is necessary in xanthine metabolism. This inherited deficiency may cause the development of kidney stones made of xanthine precipitate.

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xanthinuria [zan″thin-u´re-ah]

excess of xanthine in the urine, due to a hereditary disorder of purine metabolism in which there is a deficiency of the enzyme xanthine oxidase.

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xanthinuria

excess of xanthine in the urine.