Abstract
Background
Vascular endothelial growth factor (VEGF) and matrix metalloproteinase (MMP)-9 play important roles in tumor angiogenesis, development, and progression. This study investigates the expression of VEGF combined with MMP-9, their correlation with clinical characteristics, and their effect on the prognosis for patients with pN0 gastric cancer after curative surgery.
Methods
A total of 55 patients were enrolled in the study. They were analyzed by immunohistochemistry, and their correlation with clinical characteristics was then investigated. Their relations and the survival time of patients were retrospectively analyzed.
Results
VEGF and MMP-9 were positively expressed in 24 (43.6%) and 16 (29.1%) patients, respectively, and had a positive correlation (r = 0.324, p = 0.016) in the Spearman rank correlation analysis. Univariate analysis showed that VEGF, MMP-9 expression, vascular invasion, T stage, and tumor size were associated with tumor recurrence as well as the disease-specific (DSS) and overall (OS) survival rates. Patients with positive VEGF expression showed significantly higher recurrence and poorer DSS and OS rates compared with those with negative VEGF expression. Multivariate analysis showed that VEGF expression, vascular invasion, T stage (serosal invasion), and tumor size were significant independent prognostic factors for tumor recurrence, DSS, and OS in patients with pN0 gastric cancer with the exception that T stage was not for DSS.
Conclusions
VEGF expression, vascular invasion, T stage (serosal invasion), and tumor size can be used as valuable prognosticators in predicting tumor recurrence and prognosis for patients with pN0 gastric cancer after curative surgery. VEGF may have a synergistic effect with MMP-9 during tumor angiogenesis, development, and progression.
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Acknowledgments
We are indebted to Dr. Shu-hai Li and Lu-tao Du (School of Medicine, Shandong University) for their excellent statistical work. We are also grateful to Dr. Jin-song Li and Meng Chen (Department of Pathology, Qilu Hospital, Shandong University) for their technical assistance.
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We declare that we have no conflict of interest.
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The first two authors contributed equally to this work.
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Liu, Yf., Guo, S., Zhao, R. et al. Correlation of Vascular Endothelial Growth Factor Expression With Tumor Recurrence and Poor Prognosis in Patients With pN0 Gastric Cancer. World J Surg 36, 109–117 (2012). https://doi.org/10.1007/s00268-011-1192-6
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DOI: https://doi.org/10.1007/s00268-011-1192-6