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Related Concept Videos

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...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Peptic Ulcer01:27

Peptic Ulcer

Peptic ulcers are erosive lesions of the gastric or duodenal lining, most commonly caused by Helicobacter pylori infection. This Gram-negative, helical bacterium has adapted to survive the stomach’s acidic environment by producing urease, which converts urea into ammonia and carbon dioxide. The ammonia neutralizes gastric acid in the bacterium’s immediate environment, allowing colonization of the gastric mucosa. H. pylori attaches to mucus-secreting epithelial cells, penetrates the mucus...
Peptic Ulcer Disease I: Introduction01:25

Peptic Ulcer Disease I: Introduction

Peptic ulcer disease (PUD) involves breaks in the gastrointestinal tract's mucosal lining, primarily in the stomach and duodenum, with less frequent occurrences in the lower esophagus or near the pylorus.Ulcers can be acute or chronic. Acute ulcers are short-lived with minimal inflammation and heal quickly after the irritant is removed. Chronic ulcers persist, may recur, and often cause scarring due to ongoing tissue damage. Superficial erosions affect only the mucosal layer and are called...
Peptic Ulcer Disease II: Pathophysiology01:24

Peptic Ulcer Disease II: Pathophysiology

Peptic ulcer disease develops when protective mechanisms of the gastrointestinal mucosa are overwhelmed by harmful factors, leading to localized erosions in the stomach or proximal duodenum. The main causes are Helicobacter pylori infection and chronic use of nonsteroidal anti-inflammatory drugs (NSAIDs).Helicobacter pylori–Induced InjuryBacterial Adaptation and Colonization:H. pylori is a spiral, Gram-negative bacterium adapted to the acidic stomach. and transmitted through oral-oral or...
Peptic Ulcer Disease III: Clinical Manifestations and Complications01:25

Peptic Ulcer Disease III: Clinical Manifestations and Complications

Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...

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Related Experiment Video

Updated: Jul 12, 2026

Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
08:07

Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation

Published on: September 6, 2017

HLA and duodenal ulcer.

A Ellis, J C Woodrow

    Gut
    |September 1, 1979
    PubMed
    Summary

    Researchers found a link between duodenal ulcers and HLA-B12 in white patients. This human leukocyte antigen (HLA) finding may offer insights into the genetic factors influencing duodenal ulcer development.

    Area of Science:

    • Immunogenetics
    • Gastroenterology

    Background:

    • Duodenal ulcer disease affects a significant portion of the population.
    • The role of genetic factors, particularly human leukocyte antigens (HLA), in disease susceptibility is an area of ongoing research.

    Purpose of the Study:

    • To investigate potential associations between specific human leukocyte antigen (HLA) types and the incidence of duodenal ulcer disease.

    Main Methods:

    • Human leukocyte antigen (HLA) typing was performed on a cohort of 101 white patients diagnosed with duodenal ulcer.
    • The study included 78 men and 23 women.

    Main Results:

    • A statistically significant association was identified between duodenal ulcer and the HLA-B12 antigen.
    • No other significant associations were reported in the provided abstract.

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    Mouse Models Of Helicobacter Infection And Gastric Pathologies
    07:43

    Mouse Models Of Helicobacter Infection And Gastric Pathologies

    Published on: October 18, 2018

    Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia
    03:05

    Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

    Published on: February 16, 2024

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    Last Updated: Jul 12, 2026

    Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
    08:07

    Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation

    Published on: September 6, 2017

    Mouse Models Of Helicobacter Infection And Gastric Pathologies
    07:43

    Mouse Models Of Helicobacter Infection And Gastric Pathologies

    Published on: October 18, 2018

    Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia
    03:05

    Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

    Published on: February 16, 2024

    Conclusions:

    • The HLA-B12 antigen may be a genetic marker associated with an increased risk of developing duodenal ulcers in the studied population.
    • Further research is warranted to elucidate the biological mechanisms underlying this observed association.