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De Lucia, D; De Vita, F; Orditura, M; Renis, V; Belli, A; Conte, M; di Grazia, M; Iacoviello, L; Donati, M B; Catalano, G
Tumori, 11/1997, Letnik: 83, Številka: 6Journal Article
Thromboembolic complications are common in patients with cancer and represent the second cause of death in patients with overt malignant disease. The aim of this study was to investigate the activated protein C pathway in cancer. We studied the coagulation cascade, natural clotting inhibitors, fibrinolytic proteins and resistance to activated protein C in 20 patients with advanced gastrointestinal cancer and 84 volunteers by measuring PT, APTT, fibrinogen, AT III, PC, PS, APC resistance, fibrinolytic system (PLG, ANPL, PAI-1, and t-PA) and activation peptides (D-Dimers, prothrombin 0 fragment 1 + 2/F1 + 2). Laboratory tests confirmed coagulation abnormalities in cancer patients. Fibrinogen, D-Dimers and F1 + 2 were increased, while t-PA activity was significantly lower than that of controls. APC resistance was higher in cancer patients compared to the control group (55% vs 2%; P < 0.0001). Excess thrombin generation was manifested by increased F1 + 2 plasma levels in APC-resistant cancer patients. Genetic analyses showed that only one patient with a poor response to APC carried a factor V R506Q mutation in exon 10. Our findings show a high prevalence of APC resistance in cancer, compatible with an acquired defect in the APC pathway.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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