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Related Concept Videos

Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy01:16

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Helicobacter pylori, a resilient gram-negative bacterium, can thrive in the stomach's harsh, acidic environment. Infection with H. pylori leads to a cascade of events within the stomach lining. One of the critical disruptions caused by this bacterium is the interference with somatostatin production, a hormone responsible for regulating acid secretion. This interference tips the balance, escalating acid secretion and diminishing bicarbonate levels. This imbalance compromises the defensive...
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Peptic ulcers are sores on the stomach's inner lining and the upper small intestine, which are the result of disruptions in the mucosal layer that houses parietal cells which produce gastric acid, and chief cells which secrete pepsinogen.
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds...
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Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

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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.
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Peptic Ulcer Disease I: Introduction01:30

Peptic Ulcer Disease I: Introduction

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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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Gastritis-II: Pathophysiology01:17

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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.
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Mucosal Barrier of the Stomach01:25

Mucosal Barrier of the Stomach

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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...
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Updated: Jan 18, 2026

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
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Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance

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[Helicobacter pylori].

Christian Schulz1,2, Kerstin Schütte3,4

  • 1Medizinische Klinik und Poliklinik 2, LMU Klinikum München, Marchioninistr. 15, 81377, München, Deutschland. chr.schulz@med.uni-muenchen.de.

Innere Medizin (Heidelberg, Germany)
|September 9, 2025
PubMed
Summary
This summary is machine-generated.

Helicobacter pylori (H. pylori) eradication is recommended upon detection. Rising antibiotic resistance necessitates updated guidelines for H. pylori diagnostics and treatment, including susceptibility testing considerations.

Keywords:
Helicobacter pylori/test methodsEradication therapyPeptic ulcer/complicationsPeptic ulcer/risk factorsStomach neoplasms

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Gastroenterology

Background:

  • Helicobacter pylori (H. pylori) identified as a pathogen in 1983.
  • Significant progress in understanding H. pylori pathophysiology, diagnostics, and treatment.
  • H. pylori infection linked to gastric malignancies, necessitating eradication therapy.

Purpose of the Study:

  • Provide an overview of H. pylori clinical relevance.
  • Explain current guideline-based diagnostic indications and methods.
  • Discuss therapeutic strategies amid rising antibiotic resistance.

Main Methods:

  • Review of clinical guidelines and literature on H. pylori management.
  • Analysis of diagnostic approaches for H. pylori detection.
  • Evaluation of therapeutic options and antimicrobial resistance patterns.

Main Results:

  • H. pylori-associated gastritis is an infectious disease requiring eradication.
  • Increased antibiotic resistance impacts first-line therapy recommendations.
  • Debate exists regarding routine pre-treatment antimicrobial susceptibility testing.

Conclusions:

  • Updated clinical guidelines reflect challenges posed by H. pylori antibiotic resistance.
  • Guideline-based diagnostics and therapy are crucial for effective H. pylori management.
  • Further research needed on optimizing H. pylori treatment strategies in the context of resistance.