Project description:To test the hypothesis that there is a specific miRNA expression signature which characterizes Barrett's esophagus development and progression, we performed miRNA microarray analysis comparing normal esophageal squamous epithelium with the two different metaplastic lesions occuring within Barrett's mucosa (i.e. gastric metaplasia and intestinal metaplasia). Samples of H. pylori-related gastritis and gastric intestinal metaplasia were also considered in the definition of esophageal-specific miRNAs. miRNA microarray analysis was performed in a series of samples obtained from (a) 10 histologically-proven long-segment Barrett's esophagus patients; (b) 10 patients with H. pylori-related chronic atrophic gastritis. Overall, 10 normal esophageal squamous epithelium samples, 10 esophageal intestinal metaplasia samples, 10 esophageal gastric metaplasia samples, 10 H. pylori -related gastritis samples (no atrophic lesion detected; obtained from the antrum) and 10 gastric intestinal metaplasia samples (obtained from the antrum) were considered.

2011-01-01 | E-GEOD-24839 | biostudies-arrayexpress

microRNA expression profiling of human esophageal metaplastic lesions

2011-01-01 | GSE24839 | GEO

Gastrointestinal Adenocarcinomas of the Esophagus, Stomach, and Colon Exhibit Distinct Patterns of Genome Instability and Oncogenesis.

Project description:This SuperSeries is composed of the following subset Series: GSE36458: Affymetrix SNP 6.0 array data for colon, gastric and esophageal adenocarcinoma cancer types GSE36459: Affymetrix 250K StyI SNP array data for gastric and esophageal adenocarcinoma cancer types Refer to individual Series

2012-08-31 | E-GEOD-36460 | biostudies-arrayexpress

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