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Related Concept Videos

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,...
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 III: Clinical Manifestations and Management01:23

Gastritis III: Clinical Manifestations and Management

The clinical manifestations of gastritis can vary depending on the cause and type of gastritis, but some common symptoms may include the following.
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
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...
Other Disorders of Digestive System01:30

Other Disorders of Digestive System

The gastrointestinal tract is susceptible to various disorders. If the lower esophageal sphincter is damaged, stomach acid can flow back into the esophagus, causing irritation and inflammation of the lining. This condition is called gastroesophageal reflux disease (known as heartburn) and may cause chest pain and difficulty swallowing. In the stomach, prolonged use of nonsteroidal anti-inflammatory drugs like aspirin, chronic alcohol consumption, bacterial infections such as Helicobacter...
Peptic Ulcer Disease I: Introduction01:30

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease (PUD) is characterized by mucosal excavation in the esophagus, stomach, pylorus, or duodenum. It can manifest as acute or chronic based on the extent and duration of mucosal involvement.
An acute ulcer, marked by superficial erosion and minimal inflammation, swiftly resolves upon identifying and addressing the underlying cause. In contrast, a chronic ulcer persists, potentially eroding through the muscular wall and forming fibrous tissue.
Peptic ulcers can also be...

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Related Experiment Video

Updated: Jun 5, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
10:27

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Cutting edge issues in autoimmune gastritis.

Ban-Hock Toh1, James Chan, Tin Kyaw

  • 1Centre for Inflammatory Diseases, Department of Medicine, Southern Clinical School, Monash University, Melbourne, VIC, Australia. Ban-Hock.Toh@monash.edu

Clinical Reviews in Allergy & Immunology
|December 22, 2010
PubMed
Summary

Autoimmune gastritis results from a CD4 T cell attack on stomach acid pumps, leading to vitamin B12 deficiency and pernicious anemia. Research explores its causes, diagnosis, and potential cures.

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Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
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Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells

Published on: September 18, 2016

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Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
10:27

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
06:57

Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells

Published on: September 18, 2016

Area of Science:

  • Immunology
  • Gastroenterology
  • Autoimmune Diseases

Background:

  • Autoimmune gastritis involves a CD4 T cell response against gastric H/K-ATPase.
  • The condition often remains silent until pernicious anemia develops due to vitamin B12 deficiency.

Purpose of the Study:

  • To review current knowledge on autoimmune gastritis.
  • To highlight key areas including epidemiology, immunogenetics, and pathogenesis.
  • To discuss diagnostic methods and therapeutic strategies.

Main Methods:

  • Literature review of autoimmune gastritis.
  • Analysis of epidemiological and immunogenetic data.
  • Exploration of Helicobacter pylori's role via molecular mimicry.

Main Results:

  • Autoimmune gastritis is linked to specific genetic factors and potentially Helicobacter pylori infection.
  • The disease is associated with other organ-specific autoimmune conditions.
  • Diagnosis relies on specific laboratory markers.

Conclusions:

  • Understanding the immunopathogenesis is crucial for developing curative therapies.
  • Further research into triggers and genetic predispositions is warranted.
  • Integrated approaches are needed for managing autoimmune gastritis and associated conditions.