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Tissue factor/its pathway inhibitor system and kynurenines in chronic kidney disease patients on conservative

Krystyna Pawlak1, Janina Tankiewicz, Michal Mysliwiec

  • 1Department of Monitored Pharmacotherapy, 15-089 Bialystok, Poland.

Blood Coagulation & Fibrinolysis : an International Journal in Haemostasis and Thrombosis
|June 4, 2009
PubMed

Insights

Chronic kidney disease (CKD) patients show increased tissue factor (TF) and kynurenine (KYN) pathway metabolites. These findings suggest a link between the TF/TFPI system and KYN pathway in CKD, impacting thrombotic complications.

Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Biochemistry

Background:

  • Abnormalities in the tissue factor (TF) and tissue factor pathway inhibitor (TFPI) system are linked to thrombotic complications and atherosclerosis in chronic kidney disease (CKD).
  • The kynurenine (KYN) pathway of tryptophan (TRP) degradation has been implicated in the progression of cardiovascular complications.

Purpose of the Study:

  • To compare plasma levels of TF, TFPI, and KYN pathway metabolites (KYN, 3-hydroxykynurenine [3-HKYN]) in CKD patients and healthy controls.
  • To investigate the association between the TF/TFPI system and KYN pathway metabolites in CKD patients.

Main Methods:

  • Plasma samples were collected from 55 CKD patients on conservative treatment and 19 healthy controls.
  • Concentrations of TF, TFPI, TRP, KYN, and 3-HKYN were measured.
  • Statistical analyses were performed to compare groups and assess correlations.

Main Results:

  • CKD patients exhibited significantly higher plasma TF, KYN, 3-HKYN, KYN/TRP ratio, and 3-HKYN/KYN ratio compared to controls.
  • TRP concentrations were significantly lower in CKD patients.
  • TF/TFPI system showed inverse correlation with TRP and positive correlation with 3-HKYN, KYN/TRP, and 3-HKYN/KYN ratios.

Conclusions:

  • This study reveals a significant relationship between the TF/TFPI system and the KYN pathway in CKD patients.
  • These findings suggest a potential role for the KYN pathway in the thrombotic complications associated with CKD.

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