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Gastric Acid Diffusion Barrier
- Molecular classification
- Multi-component System, Physical Barrier, Physiological System
01
Overview
The gastric acid diffusion barrier is a complex protective system in the stomach that prevents the highly acidic gastric contents from damaging the stomach lining. It comprises the mucus layer, bicarbonate secretion, epithelial cell lining with tight junctions, and rapid cell turnover. Its primary function is to protect against hydrochloric acid and pepsin, thereby preventing autodigestion and ulceration. Failure of this barrier leads to conditions like gastritis and peptic ulcer disease.
- Other names
- Gastric Mucosal BarrierGastric Protective Barrier
02
Mechanism of action
Not applicable, as it is a system, not a single molecule.
03
Biological functions
Protection of Gastric MucosaPrevention of AutodigestionMaintenance of Gastric pH Gradient
04
Disease associations
GastritisPeptic Ulcer DiseaseGastrointestinal Bleeding
05
Safety considerations
Compromise of barrier leads to gastritis/ulcersNSAID-induced damageH. pylori-induced damage
06
Interacting drugs
Prostaglandin Analogues
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