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Expression of cyclooxygenase-2, vascular endothelial growth factor and matrix metalloproteinase-2 in patients with primary laryngeal carcinoma: a tissue microarray study
Published online by Cambridge University Press: 21 September 2007
Abstract
To determine the correlation between expression of cyclooxygenase-2, vascular endothelial growth factor and matrix metalloproteinase-2, in patients with laryngeal carcinoma.
The study included 85 primary laryngeal squamous cell carcinoma cases. Expression was assessed using Envision immunohistochemical stains for cyclooxygenase-2, vascular endothelial growth factor and matrix metalloproteinase-2.
A tissue microarray containing samples from the 85 primary laryngeal squamous cell carcinoma cases was assembled. Immunohistochemical testing for cyclooxygenase-2, vascular endothelial growth factor and matrix metalloproteinase-2 was performed. Using Pearson correlation, expression of these proteins was compared with the following clinicopathological variables: age, sex, clinical tumour–node–metastasis staging, and prognosis. Three-year survival curves, factored by cyclooxygenase-2, vascular endothelial growth factor and matrix metalloproteinase-2 expression, were generated for overall survival, by Kaplan–Meier analysis.
The expression of cyclooxygenase-2 significantly differed between patients with different pathology, tumour–node–metastasis stage and prognosis. A marked difference in vascular endothelial growth factor expression was seen between two histological grade groups. Expression of matrix metalloproteinase-2 protein statistically significantly differed between patients with different tumour–node–metastasis stages, lymph node metastases and three-year survival rates. The expression of cyclooxygenase-2 in laryngeal carcinoma tissue was found to be associated with the expression of matrix metalloproteinase-2.
Cyclooxygenase-2 and matrix metalloproteinase-2 may act as clinical prognostic indicators of tumour growth and differentiation in laryngeal carcinoma.
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- Copyright © JLO (1984) Limited 2007
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