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Related Concept Videos

Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

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 similar...
Cellular Adaptation IV: Dysplasia and Metaplasia01:24

Cellular Adaptation IV: Dysplasia and Metaplasia

DysplasiaDysplasia refers to abnormal changes in the size, shape, and organization of mature cells, characterized by pleomorphism, nuclear abnormalities, and increased mitotic activity. It commonly affects epithelial tissues, including the cervix, gastrointestinal tract, respiratory mucosa, and endometrium. Although it may occur alongside hyperplasia, dysplasia is not a true adaptive response but a preneoplastic change with potential to progress to cancer.When confined above the basement...
Gastritis II: Pathophysiology01:26

Gastritis II: Pathophysiology

The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

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.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure entails...
Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Gastritis-I: Introduction and Types01:27

Gastritis-I: Introduction and Types

Gastritis, defined by the inflammation or irritation of the stomach lining or gastric mucosa, manifests in several distinct forms: acute, chronic, reactive, and a specific subtype known as autoimmune metaplastic atrophic gastritis.
Acute gastritis presents as a sudden inflammation triggered by various stressors to the stomach lining, such as exposure to corrosive agents, local irritants like aspirin and other NSAIDs, alcohol consumption, radiation therapy, physical trauma, severe burns, sepsis,...

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Related Experiment Video

Updated: Jun 19, 2026

An Immunofluorescent Method for Characterization of Barrett&#8217;s Esophagus Cells
08:54

An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells

Published on: July 20, 2014

How does inflammation cause Barrett's metaplasia?

Benjamin J Colleypriest1, Stephen G Ward, David Tosh

  • 1Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, UK.

Current Opinion in Pharmacology
|October 16, 2009
PubMed
Summary
This summary is machine-generated.

Oesophageal adenocarcinoma and its precursor, Barrett's metaplasia, are increasing. Inflammation, driven by reflux, influences these conditions, involving specific immune responses and transcription factors like CDX2.

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Surgical Models of Gastroesophageal Reflux with Mice
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Diagnosis of Neoplasia in Barrett&#8217;s Esophagus using Vital-dye Enhanced Fluorescence Imaging
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Diagnosis of Neoplasia in Barrett’s Esophagus using Vital-dye Enhanced Fluorescence Imaging

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Related Experiment Videos

Last Updated: Jun 19, 2026

An Immunofluorescent Method for Characterization of Barrett&#8217;s Esophagus Cells
08:54

An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells

Published on: July 20, 2014

Surgical Models of Gastroesophageal Reflux with Mice
05:19

Surgical Models of Gastroesophageal Reflux with Mice

Published on: August 25, 2015

Diagnosis of Neoplasia in Barrett&#8217;s Esophagus using Vital-dye Enhanced Fluorescence Imaging
06:55

Diagnosis of Neoplasia in Barrett’s Esophagus using Vital-dye Enhanced Fluorescence Imaging

Published on: May 11, 2014

Area of Science:

  • Gastroenterology
  • Oncology
  • Immunology

Background:

  • Oesophageal adenocarcinoma incidence is rising, with Barrett's metaplasia as a precursor lesion.
  • Both conditions are linked to inflammation from acid and bile reflux.
  • Barrett's metaplasia exhibits a T-helper 2 cytokine profile, unlike normal or inflamed oesophagus.

Purpose of the Study:

  • To investigate the role of oesophageal inflammation in the development of Barrett's metaplasia and oesophageal cancer.
  • To understand the molecular mechanisms linking inflammation to metaplasia development.

Main Methods:

  • Analysis of cytokine profiles in Barrett's metaplasia versus normal/inflamed oesophagus.
  • Investigation of transcription factor involvement, specifically CDX2.
  • Examination of the role of nuclear factor kappa B (NF-κB) in CDX2 induction.

Main Results:

  • Barrett's metaplasia shows a distinct T-helper 2 immune response.
  • CDX2, a key transcription factor for Barrett's metaplasia, is induced by inflammatory mediators.
  • NF-κB mediates the induction of CDX2 in response to inflammation.

Conclusions:

  • Oesophageal inflammation plays a critical role in the pathogenesis of Barrett's metaplasia.
  • Understanding inflammatory pathways, including NF-κB and CDX2, is crucial for insights into oesophageal cancer development.