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Related Concept Videos

Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

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Barrett's esophagus is a medical condition where the esophageal mucosa is significantly damaged by stomach acid or other digestive fluids, often due to long-term exposure associated with gastroesophageal reflux disease (GERD). In GERD, a weakened or abnormally relaxed lower esophageal sphincter allows stomach acid to flow persistently into the esophagus.
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more...
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Barrett Esophagus-II: Clinical Manifestations and Management01:21

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Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
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Related Experiment Video

Updated: Oct 8, 2025

An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells
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Clonal Transitions and Phenotypic Evolution in Barrett's Esophagus.

James A Evans1, Emanuela Carlotti1, Meng-Lay Lin1

  • 1Clonal Dynamics in Epithelia Laboratory, Queen Mary University of London, London, United Kingdom.

Gastroenterology
|January 1, 2022
PubMed
Summary

Barrett's esophagus gland diversity increases with progression, suggesting an evolutionary process. This study reveals common ancestry between gastric and intestinal gland types in BE, offering insights into esophageal adenocarcinoma development.

Keywords:
Barrett’s Esophagus (BE)ClonalDiversityEsophageal Adenocarcinoma (EA)Evolution

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Establishment and Histological Analysis of Esophageal Organoids Modeling the Progression from Normal to Cancerous Tissues
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Area of Science:

  • Gastroenterology
  • Molecular Biology
  • Cancer Research

Background:

  • Barrett's esophagus (BE) is a precursor to esophageal adenocarcinoma.
  • The evolutionary mechanisms driving BE progression remain poorly understood.

Purpose of the Study:

  • Investigate BE gland phenotype distribution and clonal evolution.
  • Determine the role of phenotypic diversity in BE progression.

Main Methods:

  • Analyzed gland phenotypes using immunohistochemistry and histology in BE patients.
  • Determined clonal relationships via mitochondrial genome sequencing of distinct gland types.
  • Quantified gland diversity using the Shannon diversity index.

Main Results:

  • Identified 5 distinct gland phenotypes in nondysplastic BE.
  • Demonstrated common ancestry between gastric (oxyntocardiac) and intestinal (specialized) gland phenotypes.
  • Observed significantly increased phenotypic diversity in BE adjacent to dysplasia.

Conclusions:

  • BE phenotypes represent an evolutionary process.
  • Increased gland diversity may contribute to BE progression.
  • Established common ancestry between gastric and intestinal glands in BE.