xanthurenic acid


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Related to xanthurenic acid: kynurenic acid, Quinolinic Acid

xanthurenic acid

 [zan″thu-ren´ik]
a metabolite of l-tryptophan, present in normal urine and in increased amounts in vitamin B6 deficiency.

xan·thu·ren·ic ac·id

(zan'thū-rēn'ik as'id),
C10H7NO4; This compound a metabolic product resulting from indoleamine 2,3-dioxygenase (IDO) breakdown of tryptophan, may accumulate in human lens cells and play a role in senile-onset lens pathology, leading to lens cell apoptosis. Excreted in the urine of pyridoxine-deficient animals after the ingestion of tryptophan, and of rats fed almost exclusively with fibrin, the sulfur-yellow crystals form a red compound with Millon reagent, or an intensely green one with ferrous sulfate.

xanthurenic acid

/xanth·u·ren·ic ac·id/ (zanth″u-ren´ik) a bicyclic aromatic compound formed as a minor catabolite of tryptophan and present in increased amounts in urine in vitamin B6 deficiency and some disorders of tryptophan catabolism.

xanthurenic acid

[zan′thoo͡rē′nik]
a metabolite of tryptophan that occurs in normal urine and in elevated levels in patients with vitamin B6 deficiency.

xanthurenic acid

a metabolite of l-tryptophan, present in normal urine and in increased amounts in vitamin B6 deficiency.
References in periodicals archive ?
The 1975 and 1977 research was actually done more than two decades after several groups of researchers (7,8,9,10) had confirmed in the early 1950s that vitamin B6 returned levels of xanthurenic acid to normal.
And a last fact: Textbooks of laboratory medicine in the 1940s told us that higher than usual xanthurenic acid in urine is diagnostic for vitamin B6 deficiency
pyridoxine) for suppressing the elimination of xanthurenic acid in pregnant and non-pregnant women following the oral intake of a measured quantity of tryptophan.