Cell adhesion molecules P-cadherin and CD24 are markers for carcinoma and dysplasia in the biliary tract

Human Pathology
Marc-Oliver RienerWolfram Jochum

Abstract

P-cadherin (CDH3) and CD24 are cell adhesion molecules that control morphogenic processes, cell motility, and invasive growth of tumor cells. The aim of our study was to investigate P-cadherin and CD24 expression in carcinomas and dysplastic lesions of the biliary tract and to evaluate the potential diagnostic usefulness of these cell adhesion molecules. Using immunohistochemistry on tissue microarrays, we analyzed P-cadherin, CD24, and p53 expression in 117 carcinomas of the biliary tract (19 intrahepatic cholangiocarcinomas, 59 extrahepatic cholangiocarcinomas, and 39 gallbladder carcinomas) and correlated our findings with clinicopathologic parameters. We found P-cadherin positivity in 37% of intrahepatic cholangiocarcinomas, 73% of extrahepatic cholangiocarcinomas, and 64% of gallbladder carcinomas, respectively. CD24 reactivity was observed in 21% of intrahepatic cholangiocarcinomas, 58% of extrahepatic cholangiocarcinomas, and 42% of gallbladder carcinomas. Nuclear p53 expression was found in 37% of intrahepatic cholangiocarcinomas, 46% of extrahepatic cholangiocarcinomas, and 45% of gallbladder carcinomas. We also studied P-cadherin, CD24, and p53 expression in normal (n = 30), inflamed (n = 22), and dysplastic (n = 21) ...Continue Reading

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