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Target intelligence / Profile preview
Gastric Hydrochloric Acid (None)
- Target
- None
- Molecular classification
- Inorganic Acid, Gastric Juice Component
01
Overview
Gastric hydrochloric acid (HCl) is the primary acidic component of gastric juice, produced by parietal cells in the stomach lining. It plays a central role in digestion and host defense within the gastrointestinal tract. HCl denatures proteins, activates pepsinogen to pepsin for protein breakdown, kills ingested bacteria, and facilitates absorption of certain nutrients like vitamin B12, iron, and calcium. Imbalances in HCl production can lead to conditions like GERD, ulcers, hypochlorhydria, or achlorhydria. Its secretion is regulated by neural and hormonal factors.
02
Mechanism of action
Proton pump inhibitors (PPIs) block H+/K+ ATPase activity, reducing acid secretion. Antacids neutralize gastric acid. H2-receptor antagonists block histamine-stimulated acid secretion.
03
Biological functions
Protein digestion activationAntimicrobial defenseNutrient absorption facilitationGastric motility signaling
04
Disease associations
Gastroesophageal reflux disease (GERD)Peptic Ulcer DiseaseHypochlorhydriaAchlorhydria
05
Safety considerations
Hyperchlorhydria can lead to ulcers and GERD.Hypochlorhydria can lead to bacterial overgrowth and nutrient malabsorption.Long-term PPI use is associated with increased risk of certain infections and nutrient deficiencies.
06
Interacting drugs
Proton Pump Inhibitors (PPIs)
2 more in the full profile.
07
Biomarkers
Gastric pHSerum Gastrin Levels
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