Markers of endothelial cell injury and thrombin activatable fibrinolysis inhibitor in nephrotic syndrome.
Thromboembolic complications are often seen in patients with nephrotic syndrome. Markers of endothelial cell injury [thrombomodulin, intracellular adhesion molecule, vascular cell adhesion molecule, thrombin activatable fibrinolysis inhibitor (TAFI), protein Z, vascular endothelial growth factor, markers of thrombin and plasmin generation] were studied in 22 patients with nephrotic syndrome. All these parameters studied, except protein Z and D-dimers, were significantly higher in patients with nephrotic syndrome, whereas protein Z was significantly lower when compared with the healthy volunteers. None of the endothelial cell markers (thrombomodulin, P-selectin, E-selectin, intracellular adhesion molecule, vascular cell adhesion molecule), thrombin and plasmin generation markers (thrombin-antithrombin complexes, prothrombin fragments 1 + 2, plasmin-antiplasmin complexes, D-dimers), protein C, protein Z, vascular endothelial growth factor, and TAFI concentration and activity were directly correlated with the level of proteinuria, albumin, cholesterol, triglycerides or creatinine, except significant positive correlations between TAFI activity and serum creatinine, E-selectin and albumin as well as negative correlations between plasmin-antiplasmin complexes and proteinuria. In these patients, there is evidence of endothelial cell injury and probably secondary activation of the coagulation cascade. Elevated circulating TAFI antigen and activity might be a new link in the pathogenesis of impaired fibrinolysis and the progression of atherosclerosis in nephrotic syndrome. Protein Z deficiency might also contribute to the enhanced risk of thromboembolic complications in nephrotic syndrome.[1]References
- Markers of endothelial cell injury and thrombin activatable fibrinolysis inhibitor in nephrotic syndrome. Malyszko, J., Malyszko, J.S., Mysliwiec, M. Blood Coagul. Fibrinolysis (2002) [Pubmed]
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