Usefulness of endoscopic brushing and magnified endoscopy with narrow band imaging (ME-NBI) to detect intestinal phenotype in columnar-lined esophagus.

Journal of Gastroenterology
Takahisa MuraoKen Haruma

Abstract

Barrett's esophagus with specialized intestinal metaplasia (SIM), which is at high risk of progressing to esophageal adenocarcinoma, has been identified by obtaining biopsy specimens randomly. Magnified endoscopy with narrow band imaging (ME-NBI) is reported to be useful for detecting SIM or the intestinal phenotype. We aimed to evaluate the usefulness of endoscopic brushing followed by ME-NBI for the detection of the intestinal phenotype. Biopsy and brushing samples were taken following endoscopic observation by ME-NBI. Total RNA was extracted from the whole sample and microdissected samples, and quantitative reverse transcription-polymerase chain reaction (PCR) analysis of SHH, CDX2, and mucin mRNA expression was performed. Fifty patients (32 men, 18 women, average age 67.3 years) with metaplastic columnar epithelium of the lower esophagus were studied. MUC2 (85 vs. 65 %) and CDX2 (95 vs. 75 %) were detected more frequently in the brushing samples than in the biopsy samples. MUC2 expression levels were significantly higher in the brushing samples than those in the biopsy samples. CDX2 and MUC2 expression levels in the brushing samples were significantly higher in the mucosa with tubular/villous pattern observed by ME-NBI than...Continue Reading

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Citations

Jul 24, 2015·Journal of Gastroenterology and Hepatology·Takahisa MuraoKen Haruma
Dec 18, 2014·Diseases of the Esophagus : Official Journal of the International Society for Diseases of the Esophagus·E KernI Hirano
Jul 31, 2020·Esophagus : Official Journal of the Japan Esophageal Society·Kyosuke GodaAkiko Shiotani
Jun 16, 2018·Diseases of the Esophagus : Official Journal of the International Society for Diseases of the Esophagus·Y SmadiD Mehta

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