Summary
Platelet activation, commonly found in lung cancer patients, may cause the release
of angiogenic factors, such as vascular endothelial growth factor (VEGF-A). The present
study was designed to investigate whether plasma VEGF-A levels were associated to
different stages of non-small cell lung cancer (NSCLC). Moreover, sP-selectin, prothrombin
fragment 1+2 (F1+2),thrombin-antithrombin III complex (TATc) and D-dimer levels were
measured to test the hypothesis of an involvement of platelet and coagulation activation
in tumor angiogenesis. VEGF-A, sP-selectin, F1+2, TATc and D-dimer levels were elevated
in 65 patients with NSCLC, particularly in metastatic patients. sP-selectin (p <0.003)
and F1+2 (p <0.005) levels were independently associated to VEGF-A. In addition, patients
with positive levels of both sP-selectin and F1+2 had the highest levels of VEGF-A.
In conclusion, our findings support the hypothesis that thrombin generation might
induce platelet activation and VEGF-A release in NSCLC.
Keywords
Lung cancer - thrombin generation - soluble P-selectin - angiogene-sis - vascular
endothelial growth factor