alexa Comparison of the dysadherin and E-cadherin expression in primary lung cancer and metastatic sites.


Diagnostic Pathology: Open Access

Author(s): Mitselou A, Batistatou A, Nakanishi Y, Hirohashi S, Vougiouklakis T,

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Abstract Dysadherin, a cancer associated cell membrane glycoprotein, has been reported to downregulate E-cadherin. Aberrant expression of E-cadherin has been associated with the development of metastases in patients with cancer. Even though the expression of dysadherin and E-cadherin has been studied in primary non-small cell lung carcinoma, little is known about its expression at the distant metastases sites. We investigate by immunohistochemistry the relationship between E-cadherin and dysadherin in 111 cases of primary lung carcinomas (53 squamous cell carcinomas, 21 adenocarcinomas, 13 large cell carcinomas, and 24 small cell carcinomas), and their distant metastases. The intensity, the expression pattern and the percentage of neoplastic cell staining were recorded and the results were correlated with clinicopathological findings of the subjects. Dysadherin immunostain was expressed in 61 (54.95\%) of the cases, and increased dysadherin expression was significantly correlated with tumour size (p=0.003), distant metastases (p=0.0034), and metastasis size (p=0.0008). Reduced E-cadherin expression was noted in 46 (41.45\%) of the cases, and was correlated with high-grade tumour (p=0.02), infiltrative growth pattern (p=0.042), and advanced stage (p=0.032). Although the correlation between the expression of dysadherin and E-cadherin was not significant, a group of patients showed reduced E-cadherin expression with dysadherin overexpression. In lung carcinomas dysadherin expression seems to reflect tumour aggressiveness and may be considered a positive marker of poor prognosis when considered alone or/and in combination with down-regulation of E-cadherin.
This article was published in Histol Histopathol and referenced in Diagnostic Pathology: Open Access

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