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Down-Regulation of Claudin-1 Expression in Gastric Cancer Mucosa Is Correlated with Poor Prognosis

Open Journal of Pathology 2014年第4期4卷 206-212页

作者： Eiichiro Hirakawa yasunori tokuhara Tatsuya Morinishi Hiroyuki Ohsaki Erika Uemura Yukari Miki Toru Matsunaga Yoshio Kushida Reiji Haba Laboratory of Pathology Department of Medical Technology Kagawa Prefectural University of Health Sciences Kagawa Japan Department of Medical Technology Ehime Prefectural University of Health Sciences Ehime Japan Department of Diagnostic Pathology Kagawa University Hospital Kagawa Japan Department of Medical Hygiene Technology Course Kochi Gakuen College Kochi Japan

Background: Cell adhesion molecule abnormalities are given as one reason for the occurrence of invasion and metastasis in various cancers. In this study, we conducted an immunohistochemical examination of cell adhesion molecule claudin-1 in mucosa and invasive front of gastric cancer, and investigated the correlation of claudin-1 expression and clinicopathological factors. Methods: Immunohistochemical examination was performed for 35 patients who underwent surgery be-tween January 2010 and October 2011, to assess the correlation of claudin-1 with primary gastric cancer. Results: The expression rate of claudin-1 was 48.6% (17/35) in 35 gastric carcinoma patients. The positive rates of claudin-1 were 42.9% (15/35) in mucosa and 28.6% (10/35) in invasive front of gastric cancer. The expression rate of claudin-1 in invasive front was lower than in mucosa. From comparing claudin-1 expression in mucosa, it was found that well-to moderately-differentiated adenocarcinoma had significantly more claudin-1 expression than poorly-differrentiated adenocarcinoma. Claudin-1 expression of well-to moderately-differentiated adenocar-cinoma decreased in the invasive front of gastric cancer. Expression of claudin-1 in mucosa was negative in many cases with advanced tumor invasion (T2, T3, T4) and positive in many cases with early tumor invasion (T1), with a significant difference between the two

关键词： Claudin-1 Immunohistochemistry Mucosa Invasive Front Gastric Cancer

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