Helicobacter pylori cell surface and mucosal interface

The Helicobacter pylori cell surface and mucosal interface is the biological boundary where the Gram-negative bacterium H. pylori interacts with the human gastric epithelium. This interface is characterized by a variety of bacterial surface components, including adhesins like Blood group antigen-binding adhesin (BabA) and Sialic acid-binding adhesin (SabA), which mediate attachment to host receptors such as Lewis b antigens and sialyl-Lewis X (PMID: 11742399). The interface also hosts the enzyme urease, which is critical for bacterial survival as it neutralizes gastric acid by producing ammonia, thereby creating a neutral microenvironment (PMID: 25560337). Therapeutically, this site is targeted by mucosal protective agents like bismuth subsalicylate and sucralfate, which provide a physical barrier and exert direct antimicrobial effects (PubChem CID: 16682733). Additionally, standard eradication therapies involve antibiotics that must traverse the mucus layer to reach the bacterial surface and proton pump inhibitors that alter the pH of the interface to enhance antibiotic efficacy (PMID: 31203311). This interface is central to the pathogenesis of chronic gastritis, peptic ulcers, and gastric malignancies, making it a focal point for both diagnostic testing and drug development.

Other names

H. pylori surfaceGastric mucosal interfaceH. pylori-mucosa interaction siteH. pylori adhesion complex

Inhibition of bacterial adhesion, disruption of bacterial cell wall or membrane, inhibition of protein synthesis, neutralization of gastric acid, and physical coating of the gastric mucosa.