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Related Experiment Videos

H2-receptor antagonists in perspective.

J R Malagelada, A Cortot

    Mayo Clinic Proceedings
    |March 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Cimetidine is a histamine H2-receptor antagonist that effectively reduces gastric acid secretion. It shows promise for treating various acid-related gastrointestinal disorders with minimal side effects.

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    Area of Science:

    • Pharmacology
    • Gastroenterology

    Background:

    • Histamine H2-receptor antagonists represent a significant advancement in managing gastric acid-related conditions.
    • Cimetidine emerged as a successor to earlier antagonists like burinamide and metiamide.

    Purpose of the Study:

    • To evaluate cimetidine's efficacy and safety as a histamine H2-receptor antagonist.
    • To explore its therapeutic applications in gastrointestinal disorders.

    Main Methods:

    • In vitro studies demonstrated cimetidine's competitive antagonism of histamine H2 receptors.
    • In vivo studies assessed its inhibitory effects on gastric acid secretion in animals and humans via intravenous and oral administration.

    Main Results:

    • Cimetidine potently inhibited histamine-stimulated gastric acid secretion.

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  • Therapeutic doses did not produce measurable effects on other physiological systems.
  • Unlike metiamide, cimetidine did not exhibit neutrophil toxicity; side effects were generally trivial.

    • Conclusions:

    • Cimetidine is a safe and effective treatment for duodenal ulcers and Zollinger-Ellison syndrome.
    • It holds potential for treating gastric ulcers, pancreatic insufficiency, gastrointestinal bleeding prevention, and peptic esophagitis.
    • H2-receptor antagonists are poised to become crucial in treating diseases linked to gastric acid-pepsin secretion.