xanthurenic acid

[zan″thu-ren´ik] a metabolite of l-tryptophan" >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.

单词	xanthurenic acid
释义	DictionarySeeacid xanthurenic acid xanthurenic acid [¦zan·thyə¦ren·ik ′as·əd] (biochemistry) C₁₀H₇NO₄ Sulfur yellow crystals with a melting point of 286°C; soluble in aqueous alkali hydroxides and carbonates; excreted by pyridoxine-deficient animals after ingestion of tryptophan. xanthurenic acid xanthurenic acid [zan″thu-ren´ik] a metabolite of l-tryptophan" >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.
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