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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

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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...
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Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists01:28

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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...
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Bioavailability: Overview01:17

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Bioavailability refers to the proportion of an administered drug that reaches the systemic circulation in its active, unaltered form. It is a crucial pharmacokinetic parameter that determines the effectiveness of a drug in achieving its intended therapeutic outcomes. The route of administration significantly influences bioavailability, with intravenous administration achieving 100% bioavailability as the drug directly enters the bloodstream. In contrast, oral administration often results in...
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Bioavailability: Overview01:13

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Bioavailability refers to the proportion of an unaltered drug that, after administration, enters the systemic circulation and can be distributed to the desired action site. Factors such as gastrointestinal (GI) absorption and liver biotransformation influence the bioavailability of a drug when it is administered orally. When a drug is administered intravenously, it enters the systemic circulation directly; by definition, its bioavailability is assumed to be 100%. The bioavailability of an...
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In the intricate landscape of the gastric lumen, excessive acid secretion disrupts the natural defense mechanisms, weakening the mucus-bicarbonate barrier. This vulnerability allows pepsin to infiltrate epithelial cells, digesting mucosal proteins and triggering erosion, leading to ulcer formation.
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Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
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Related Experiment Video

Updated: Nov 21, 2025

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
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Rabeprazole: A comprehensive profile.

Ahmed H Bakheit1, Hamad M Al-Kahtani2, Salem Albraiki2

  • 1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia; Department of Chemistry, Faculty of Science and Technology, Al-Neelain University, Khartoum, Sudan.

Profiles of Drug Substances, Excipients, and Related Methodology
|January 19, 2021
PubMed
Summary

Rabeprazole, a benzimidazole anti-secretory drug, inhibits the proton pump to treat ulcers. This review covers its properties, preparation, ADME, and analytical methods.

Keywords:
ADME profileAcid or proton pumpAnalytical profileAnti-secretory drugsInhibition of the enzyme H(+)/K(+)-ATPaseMethods of synthesisNMRPhysical descriptionRabeprazoleStability solid-state

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Area of Science:

  • Pharmacology
  • Medicinal Chemistry

Background:

  • Rabeprazole is a benzimidazole derivative acting as an anti-secretory drug.
  • It functions by inhibiting the H+/K+-ATPase enzyme, commonly known as the proton pump.
  • This mechanism is crucial for managing conditions aggravated by gastric acid.

Purpose of the Study:

  • To provide a comprehensive review of rabeprazole.
  • To detail its nomenclature, physical-chemical properties, and preparation methods.
  • To discuss its Absorption, Distribution, Metabolism, and Excretion (ADME) profiles and analytical methodologies.

Main Methods:

  • Literature review of scientific databases and publications.
  • Compilation of data on rabeprazole's chemical and biological characteristics.
  • Analysis of various analytical techniques for rabeprazole quantification.

Main Results:

  • Detailed information on rabeprazole's nomenclature and physicochemical properties.
  • Overview of synthetic routes and ADME profiles.
  • Summary of validated analytical methods for dosage forms and biological samples.

Conclusions:

  • Rabeprazole is an effective proton pump inhibitor for acid-related disorders.
  • Understanding its properties and analysis is vital for therapeutic application.
  • This review consolidates essential information for researchers and clinicians.