Tryptophan metabolism via the kynurenine pathway in experimental chronic renal failure

被引:68
作者
Pawlak, D
Tankiewicz, A
Mysliwiec, P
Buczko, W
机构
[1] Med Acad Bialystok, Dept Pharmacodynam, PL-15230 Bialystok, Poland
[2] Med Acad Bialystok, Dept Gen Surg 2, PL-15230 Bialystok, Poland
关键词
tryptophan; kynurenine; 3-hydroxykynurenine; kynurenic acid; xathurenic acid; anthranilic acid; quinolinic acid; renal failure;
D O I
10.1159/000049069
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Background. Kidneys are involved in tryptophan (TRP) metabolism in two ways. They eliminate TRP derivatives on the one hand, and they produce several enzymes taking part in TRP metabolism mainly via the kynurenine pathway on the other. The aim of the present study was to examine the time-course of changes in the peripheral kynurenine products degradation during experimental chronic renal failure in rats. Methods: Tryptophan, kynurenine, 3-hydroxykynurenine, kynurenic acid, xanthurenic acid, anthranilic acid and quinolinic acid were determined in plasma using high-performance liquid chromatography technique with UV, fluorescence and electrochemical detection. Results: A decreased TRP level and significant increase in kynurenine pathway metabolite concentrations in plasma of uremic rats were found. Conclusions: Substantial disturbances in the peripheral kynurenic pathway were observed in experimental chronic renal failure. They may contribute to several symptoms of uremia. Copyright (C) 2002 S. Karger AG, Basel.
引用
收藏
页码:328 / 335
页数:8
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