Abstract
Disturbances of the fibrinolytic system and kynurenine (KYN) pathway of tryptophan (TRP) metabolism have been postulated as important factors in the pathogenesis of cardiovascular disease (CVD). However, no data are yet available on the associations between these 2 systems in relation to CVD prevalence in patients with chronic renal failure (CRF). We evaluated TRP and its metabolites, KYN, 3-hydroxykynurenine, and quinolinic acid (QA), and their relations with the parameters of the fibrinolytic system, such as tissue-type plasminogen activators and urokinase-type (uPA) plasminogen activators, plasmin-antiplasmin (PAP) complexes, plasminogen activator inhibitor-1, and Cu/Zn superoxide dismutase (Cu/Zn SOD) levels as the marker of oxidative stress in a population of 50 patients with CRF and 20 healthy controls. In addition, the relations of these parameters to CVD prevalence in patients with CRF were also determined. Compared with controls, the CRF group had significantly increased KYNs, PAP, uPA, soluble urokinase PA receptor (suPAR), plasminogen activator inhibitor-1 (all P < 0.0001), and tissue-type plasminogen activators (P < 0.01) concentrations. TRP levels were significantly lower (P < 0.0001), whereas Cu/Zn SOD levels did ...Continue Reading
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