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  • Title: Serum angiopoietin-1 as a prognostic marker in resected early stage lung cancer.
    Author: Park JH, Choi H, Kim YB, Kim YS, Sheen SS, Choi JH, Lee HL, Lee KS, Chung WY, Lee S, Park KJ, Hwang SC, Lee KB, Park KJ.
    Journal: Lung Cancer; 2009 Dec; 66(3):359-64. PubMed ID: 19339077.
    Abstract:
    PURPOSE: We evaluated the clinical significance of angiopoietins and vascular endothelial growth factor (VEGF) in patients with resected early stage lung cancer. PATIENTS AND METHODS: The study enrolled 101 patients with completely resected non-small cell lung cancer (NSCLC) of stage I or II, along with 70 healthy volunteers. Serum concentrations of angiopoietin-1, angiopoietin-2, and VEGF were measured with an ELISA. Immunohistochemical expression of angiopoietin-1 was compared with the microvessel density on the lung cancer tissues. RESULTS: The patients had lower serum angiopoietin-1 (32.1+/-9.9 ng/mL vs. 39.0+/-10.8 ng/mL, p<0.001), higher angiopoietin-2 (1949.2+/-1099.4 pg/mL vs. 1498.6+/-650.0 pg/mL, p<0.01), and higher VEGF (565.1+/-406.3 pg/mL vs. 404.6+/-254.8 pg/mL, p<0.01) levels than the controls. The angiopoietin-2 level was higher in stage II than in stage I patients (p<0.05). The levels of angiopoietin-1 (r=0.28) and angiopoietin-2 (r=0.36) each correlated with the VEGF level. Patients with a higher level of angiopoietin-1 (> or =31.2 ng/mL) had better disease-specific and relapse-free survival than those with a lower angiopoietin-1 level (<31.2 ng/mL). Angiopoietin-1 expression negatively correlated with the microvessel density. CONCLUSION: Serum angiopoietin-1 is a potential marker for predicting postoperative survival and recurrence in patients with early stage NSCLC.
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