Background: Determination of the impact of angiogenesis on tumor development and progression is essential. This study aimed to determine the serum levels of Vascular endothelial growth factor (VEGF) and Interleukin 6 (IL-6) in breast carcinoma, and to correlate them with tumor size, lymph node involvement, and cancer stage.
Methods: Under aseptic precautions 5 ml of venous blood was collected from 37 breast cancer patients and 20 healthy females after obtaining due consent and ethical committee clearance. Serum levels of VEGF and IL-6 were determined by enzyme-linked immunosorbent assay (ELISA).
Results: Serum IL-6 and VEGF levels were both significantly greater in patients than controls (P = 0.001, P = 0.001, respectively). The serum IL-6 and VEGF levels also significantly correlated with TNM staging (P = 0.001, P = 0.001). Serum IL-6 and VEGF positively correlated with each other (r = 0.668, P = 0.01). Serum IL-6 and VEGF levels did not correlate with tumor size (P = 0.45, P = 0.17) or lymph node metastasis (P = 0.95, P = 0.68).
Conclusion: Serum IL-6 and VEGF were greater in breast cancer patients than controls. The levels increased with advanced tumor, nodes, metastasis (TNM) staging, thus correlating with the patients' prognoses. Serum IL-6 and VEGF levels can be used as diagnostic tools and prognostic factors in breast cancer.
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