犬尿氨酸
喹啉酸
巴比妥酸
代谢物
犬尿氨酸途径
内科学
医学
内分泌学
色氨酸
炎症
免疫学
化学
氨基酸
生物化学
敌手
受体
作者
Duygu Eryavuz Onmaz,Dilek Tezcan,Sedat Abuşoğlu,Fı̇rdevs Sak,Fatma Hümeyra Yerlikaya,Sema Yi̇lmaz,Gülsüm Abuşoğlu,Muslu Kazım Körez,Ali Ünlü
标识
DOI:10.1016/j.clinbiochem.2023.01.007
摘要
Primary Sjögren's syndrome (pSS) is an autoinflammatory disease characterized by inflammation of the exocrine glands. Elevated inflammation causes an increase in kynurenine pathway (KP) metabolite levels by activating indoleamine 2,3-dioxygenase (IDO). The aim of this study was to measure serum KP metabolite concentrations in patients with pSS and to evaluate the relationship between these metabolites with disease activity score and clinical manifestations. A total of 80 patients with pSS and 80 healthy controls were enrolled in this study. Serum tryptophan (TRP), kynurenine (KYN), kynurenic acid (KYNA), 3-hydroxyanthranilic acid (3HAA), 3-hydroxykynurenine (3HK), quinolinic acid (QUIN) concentrations were quantified with liquid chromatography with tandem mass spectrometry (LC-MS/MS). Demographic characteristics, clinical manifestations and disease activity score (ESSDAI) of the participants were recorded. The serum level of KYN and QUIN were significantly higher in patients with pSS with low and moderate activity compared those healthy controls, while the serum level of TRP, KYNA/KYN and 3HK/KYN were lower. In addition, the significant difference for the serum level of KYNA was only in patients with moderate activity from healthy controls, and the difference was higher in favor of pSS patients. Moreover, the KYN/TRP levels were significantly increased with disease activity. The ESSDAI score was positively correlated with KYN/TRP ratio, but negatively correlated with KYNA/KYN ratio. These findings indicated that KP metabolites may play a role in the etiopathogenesis, activation and progression of pSS.
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