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Published in: Virchows Archiv 6/2005

01-12-2005 | Original Article

Claudin expression in Barrett's esophagus and adenocarcinoma

Authors: Hajnalka Gyõrffy, Ágnes Holczbauer, Pál Nagy, Zsuzsa Szabó, Péter Kupcsulik, Csilla Páska, János Papp, Zsuzsa Schaff, András Kiss

Published in: Virchows Archiv | Issue 6/2005

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Abstract

Claudins (CLDNs) are key molecules in cell adhesion, polarity, and control of paracellular solute transport. Several studies suggested that changes in claudin pattern have a role in cancer development. This study aimed to detect alterations in CLDN 1, 2, 3, 4, and 7 expression patterns in Barrett's esophagus (BE) and adenocarcinoma (ACC) compared with that in foveolar epithelium (FOV), normal squamous epithelium (SQ), and squamous cell carcinoma (SQCC). One hundred twenty five surgically or endoscopically removed, paraffin-embedded cases were studied by immunohistochemistry and analyzed statistically. BE, ACC, and FOV were dissected from 30 paraffin-embedded samples for further mRNA expression analysis. CLDN 7 was the dominating type in all epithelia and carcinomas, but its expression did not differ in normal and altered tissues. CLDN 1 expression was significantly increased in SQCC compared with that in SQ. CLDNs 3 and 4 were significantly elevated both in BE and ACC compared with that in FOV. CLDN 2 expression increased significantly in ACCs compared with that in BE. This is the first report proving similarities and differences regarding claudin expression pattern in BE and ACC compared with that in FOV and SQ. Our data prove a close link in CLDN pattern between BE and ACC, adding further evidence that BE is an alteration preceding esophageal ACC.
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Metadata
Title
Claudin expression in Barrett's esophagus and adenocarcinoma
Authors
Hajnalka Gyõrffy
Ágnes Holczbauer
Pál Nagy
Zsuzsa Szabó
Péter Kupcsulik
Csilla Páska
János Papp
Zsuzsa Schaff
András Kiss
Publication date
01-12-2005
Publisher
Springer-Verlag
Published in
Virchows Archiv / Issue 6/2005
Print ISSN: 0945-6317
Electronic ISSN: 1432-2307
DOI
https://doi.org/10.1007/s00428-005-0045-9

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