Related Experiment Video
Updated: May 4, 2026
08:54
An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells
Published on: July 20, 2014
13.1K
Mucosal polyamine metabolism in the columnar lined oesophagus
M R Gray1, H M Wallace, H Goulding
1Department of Surgery, University of Liverpool.
Gut
|May 1, 1993
Summary
Putrescine levels increase with gastrointestinal malignancy, particularly in adenocarcinoma. However, polyamine content cannot distinguish between specialized and dysplastic Barrett's esophagus.
Area of Science:
- Gastroenterology
- Oncology
- Biochemistry
Background:
- Mucosal ornithine decarboxylase activity and polyamine content are potential markers for gastrointestinal malignancy.
- Polyamines, such as putrescine, spermidine, and spermine, play crucial roles in cell growth and differentiation.
Purpose of the Study:
- To investigate the relationship between polyamine content and histological findings in various gastrointestinal mucosal tissues.
- To evaluate the potential of polyamine content as a biomarker for malignant transformation in the gastrointestinal tract.
Main Methods:
- Analysis of polyamine content (putrescine, spermidine, spermine) in endoscopic biopsy specimens from 107 patients.
- Comparison of polyamine levels across different mucosal types: gastric fundus, fundic, specialized Barrett's esophagus, dysplastic columnar lined esophagus, and Barrett's adenocarcinoma.
- Statistical analysis to determine significant differences in polyamine content between groups.
Main Results:
- Putrescine content showed a progressive increase from gastric fundus to adenocarcinoma, with significantly higher levels in adenocarcinoma compared to gastric fundus and fundic tissues (p < 0.018 and p < 0.03, respectively).
- Gastric fundus exhibited higher mucosal spermine, spermidine, and total polyamine values than fundic, specialized Barrett's esophagus, and dysplastic columnar lined esophagus (all p < 0.001), suggesting altered polyamine metabolism in metaplastic epithelium.
- Polyamine content could not differentiate between specialized and dysplastic columnar lined esophagus.
Conclusions:
- While putrescine levels correlate with malignant progression in the gastrointestinal tract, they are insufficient for distinguishing between specialized and dysplastic Barrett's esophagus.
- Altered polyamine metabolism is evident in metaplastic esophageal epithelium compared to the stomach.
- Further research is needed to identify reliable biomarkers for early detection and differentiation of esophageal pre-malignant lesions.
Related Concept Videos
01:24Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors
1.6K
Peptic ulcer disease, commonly called PUD, represents a multifaceted condition characterized by disruptions in the lining of the gastrointestinal (GI) tract. Central to the protection of the gastrointestinal lining is the mucosal-bicarbonate barrier. This physiological defense mechanism is a formidable shield against the corrosive effects of gastric acid and pepsin secretion in the stomach. Its role is pivotal in maintaining the structural integrity of the stomach's inner lining.
1.6K
01:24Esophagus
4.6K
The esophagus, a muscular conduit linking the pharynx and stomach, measures roughly 10 inches (25.4 cm) and sits behind the trachea. It remains collapsed when not swallowing. The esophagus follows a predominantly straight path through the thoracic mediastinum and enters the abdominal cavity through a diaphragmatic opening known as the esophageal hiatus.
The movement of edibles from the pharynx into the esophagus is facilitated by the upper esophageal sphincter, which is formed primarily by the...
The movement of edibles from the pharynx into the esophagus is facilitated by the upper esophageal sphincter, which is formed primarily by the...
4.6K
01:25Mucosal Barrier of the Stomach
2.6K
The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
2.6K
01:21Barrett Esophagus-I: Introduction
1.5K
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...
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more...
1.5K
01:27Esophageal Achalasia
45
Esophageal achalasia is a chronic neurogenic disorder characterized by impaired relaxation of the lower esophageal sphincter (LES) and absent or ineffective peristalsis in the distal esophagus. This leads to a functional obstruction without a physical blockage, despite significant disruption of esophageal motility.EtiologyAchalasia is caused by degeneration of the myenteric (Auerbach's) plexus, specifically the loss of inhibitory ganglion cells that produce vasoactive intestinal peptide...
45
01:26Gastritis II: Pathophysiology
52
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...
52