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Related Concept Videos

Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors01:13

Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors

Peptic ulcers, often induced by H. pylori infections or NSAID usage, arise from disruptions in the delicate balance of gastric acid production. Peptic ulcers stem from heightened gastric acid levels due to H. pylori infections or NSAID use. The protective mucus layer diminishes in the presence of these factors, allowing gastric acid to erode the stomach lining and form ulcers.
Gastric acid, a potent cocktail of hydrogen and chloride ions, is produced in specialized parietal cells within the...
Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists01:28

Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists

Histamine H2 receptors, which are intricately located on the basolateral membrane of parietal cells, play a crucial role in modulating gastric acid secretion. When released from enterochromaffin-like cells, histamine engages H2 receptors, initiating the cyclic AMP (cAMP) pathway. In this pathway, adenylyl cyclase converts ATP into cAMP, elevating intracellular cAMP levels. The activation of protein kinase A follows, stimulating the proton pump. This stimulation prompts the secretion of hydrogen...
Acid Suppressive Drugs for Peptic Ulcer Disease: Antacids01:31

Acid Suppressive Drugs for Peptic Ulcer Disease: Antacids

In the complex environment of the gastric lumen, excessive acid secretion can lead to the formation or worsening of ulcers within the delicate mucosal layer. Antacids, such as sodium bicarbonate and calcium carbonate, provide relief by neutralizing this acid, transforming it into harmless salt and water. This neutralization process raises the gastric pH from a highly acidic level of 1 to a more basic 3-4, reducing the acidity within the stomach.
However, this neutralization reaction between...
Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors01:24

Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors

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. Bicarbonate,...
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 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...

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Related Experiment Video

Updated: May 22, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
06:46

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Published on: December 14, 2020

[Hypersensitivity to proton pump inhibitors].

M Bergmann1, B Guignard, C Ribi

  • 1Service d'allergologie et immunologie clinique, HUG, 1211 Geneve 14. marcel.bergmann@hcuge.ch

Revue Medicale Suisse
|May 19, 2012
PubMed
Summary
This summary is machine-generated.

Hypersensitivity to proton pump inhibitors (PPIs) is rare but serious. Allergy to PPIs should be considered for drug-induced reactions, with cross-reactivity possible among these structurally similar medications.

Related Experiment Videos

Last Updated: May 22, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
06:46

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring

Published on: December 14, 2020

Area of Science:

  • Pharmacology
  • Immunology
  • Drug Safety

Context:

  • Proton pump inhibitors (PPIs) are widely prescribed, with some now available over-the-counter, increasing potential exposure.
  • Hypersensitivity reactions to PPIs, though rare, can be severe and manifest in various ways.
  • The structural similarity among PPIs raises concerns about cross-reactivity.

Purpose:

  • To review the literature on immediate and delayed hypersensitivity reactions to proton pump inhibitors.
  • To highlight the importance of considering PPI allergy in patients with suspected drug-induced conditions.
  • To discuss the role of diagnostic tools in identifying PPI allergy and safe alternatives.

Summary:

  • Hypersensitivity to proton pump inhibitors (PPIs) is uncommon but can lead to severe reactions, including anaphylaxis, skin rashes, and interstitial nephritis.
  • Given the widespread use and OTC availability of PPIs, an increase in hypersensitivity reactions is anticipated.
  • Allergy to PPIs must be considered in patients with suspected drug-induced organ involvement. Cross-reactivity between structurally similar PPIs is a significant concern.
  • Skin testing (prick and intradermal) is valuable for diagnosing immediate-type PPI allergy and identifying safe alternative medications.

Impact:

  • This review aids clinicians in recognizing and managing rare but severe hypersensitivity reactions to PPIs.
  • It emphasizes the need for diagnostic evaluation, including allergy testing, for suspected PPI-induced adverse events.
  • Understanding PPI cross-reactivity can guide the selection of safer alternative medications, improving patient outcomes.