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- W2411434454 abstract "Angiogenesis is a fundamental process in tumor growth and metastasis. Vascular endothelial growth factor (VEGF) is a key regulator of angiogenesis and it has been identified in a wide variety of malignancies, including head and neck squamous cell carcinoma. However, the regulation of VEGF expression in tumor angiogenesis is not well defined. The tumor-suppressor gene p53 is thought to regulate VEGF. In this study, we examined the role of p53 gene in VEGF expression.Clinical records of patients who underwent total or partial laryngectomy between 1999 and 2002 were reviewed. Of these, paraffin-embedded specimens of 27 patients (27 males; mean age 55 years; range 39 to 74 years) with a diagnosis of larynx epidermoid carcinoma were immunostained to evaluate VEGF expression, p53 gene status, and microvessel density (MVD). Variables were statistically examined.Vascular endothelial growth factor positive staining was detected in 11 (40.7%) and p53 mutations were identified in 16 (60%) tumors. No association was detected between p53 mutations and VEGF expression (p>0.05). Statistical analysis gave a clear correlation between tumor vascularity and VEGF expression (p<0.05). Vascular endothelial growth factor negative tumors showed a lower mean number of microvessels per microscopic field (29.6+/-6.6) than VEGF positive tumors (40.8+/-15.2). P53 and VEGF expression, and MVD were not correlated with the T-stage, N-status, tumor localization, and histological grading (p>0.05).The higher microvessel density in VEGF positive tumors supports the importance of VEGF for tumor angiogenesis in laryngeal carcinoma. However, our results do not support the hypothesis concerning a p53 regulation in the angiogenic process through a VEGF up-regulation." @default.
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- W2411434454 date "2006-01-01" @default.
- W2411434454 modified "2023-10-16" @default.
- W2411434454 title "[The correlation of vascular endothelial growth factor with angiogenesis and p53 gene in laryngeal squamous cell carcinoma]." @default.
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