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Objectives: Intercellular adhesion mediated by claudin and cadherin/catenin complex is a prerequisite of epithelial integrity and differentiation and has been suggested to be frequently disturbed in cancers. Endoglin (CD105) has been shown to be a more useful marker to identify proliferating endothelium involved in angiogenesis than pan-endothelial markers such as CD31. The aim of this study was to assess the relationship between these markers and clinicopathological features of colorectal carcinomas. Materials and Methods: Surgical specimens from 69 patients with colorectal cancer were immunostained for claudin-1, E-cadherin, β-catenin, endoglin and CD31. Results: Forty-six (66.7%), 67 (97.1%), and 67 (97.1%) of the tumors, expressed immunostaining for claudin-1, E-cadherin and β-catenin, respectively. A significant association was seen between claudin-1 and E-cadherin expression (p=0.002), as well with β-catenin (p=0.009). High β-catenin expression appeared to reduce the risk of poor outcome. Endoglin vessel expression was correlated significantly with vessel invasion (p |
