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Aberrant expression of Wnt and Notch signal pathways in Barrett's esophagus.
MedLine Citation:
PMID:  22889748     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Specialized intestinal metaplasia (SIM) mucosa observed in Barrett's esophagus (BE) has been a hot research topic due to the close relationship with adenocarcinoma of esophagus (ACE). Earlier studies found that SIM mucosa was similar to normal intestinal epithelium on morphology and histology. The signal pathway involved in conformation of intestinal epithelium may be a critical initiator for BE. METHODS: The expressions of key regulators (Tcf4, Cdx2, Hes1 and Math1) in Wnt and Notch signal pathways were measured in 41 paired esophageal biopsies. Cell morphological changes in normal esophagus were compared among groups treated by acid, bile acid and the mixture of both media. RESULTS: The expression levels of regulators (Tcf4, Cdx2, Hes1 and Math1) were found significantly increased in SIM, C≥3Mn and high-grade dysplasia (HGD) groups. Distinct ultrastructure changes and highly expressed key regulators were also detected at the seventh day for group treated by 400μmol bile acid. CONCLUSIONS: Aberrant expressed regulators in Wnt and Notch pathways were observed in BE tissue and normal esophageal cells treated by acid, bile acid and the mixture of both media. This study provided preliminary data to understand the mechanism of BE conformation.
Authors:
Xia Chen; Ke Jiang; Zhining Fan; Zheng Liu; Ping Zhang; Liduan Zheng; Na Peng; Jingjing Tong; Guozhong Ji
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-10
Journal Detail:
Title:  Clinics and research in hepatology and gastroenterology     Volume:  -     ISSN:  2210-741X     ISO Abbreviation:  Clin Res Hepatol Gastroenterol     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101553659     Medline TA:  Clin Res Hepatol Gastroenterol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Masson SAS. All rights reserved.
Affiliation:
Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, 121, Jing Jiayuan, Nanjing 210011, China.
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