Helicobacter Pylori and Gastric Mucosal Health
Summary
Helicobacter pylori is a spiral-shaped bacterium that colonises the human stomach, where it interacts intimately with the gastric mucosa. Its persistence evokes a spectrum of mucosal changes ranging from superficial inflammation to chronic atrophic gastritis, intestinal metaplasia and dysplasia, which are established precancerous states. The bacterium’s urease activity, flagellar motility and specialised adhesins enable it to survive the acidic environment and adhere to the epithelial surface, triggering a local immune response and release of pro-inflammatory cytokines. Host factors, such as genetic predisposition, immune tolerance and diet, modulate the extent of mucosal injury. Eradication of H. pylori often leads to regression of inflammation and promotes healing of the mucosa, thereby reducing the risk of peptic ulcer disease and gastric cancer. Yet, rising antibiotic resistance and treatment-related adverse events present ongoing challenges. In parallel, advances in endoscopic imaging, molecular diagnostics and artificial-intelligence-assisted screening are transforming early detection of mucosal alterations. A growing body of work also explores the roles of dietary habits, psychosocial stress and microbial co-infections in shaping mucosal health. Taken together, contemporary management of H. pylori infection and its sequelae demands an integrated approach that combines precise microbiological therapy, surveillance of mucosal status and lifestyle modification.
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Helicobacter Pylori and Gastric Mucosal Health publication trend
The graph below shows the total number of articles in helicobacter pylori and gastric mucosal health across all publications each year (not limited to Nature Index journals).
Technical terms
Helicobacter pylori: A Gram-negative, spiral bacterium that colonises the human gastric mucosa and induces chronic inflammation.
Chronic gastritis: Long-standing inflammation of the gastric lining, often classified as non-atrophic or atrophic based on gland loss.
Atrophic gastritis: Advanced stage in which gastric glands are replaced by fibrous tissue or intestinal-type epithelium.
Intestinal metaplasia: Transformation of gastric mucosal cells into an intestinal phenotype, recognised as a precancerous lesion.
Dysplasia: Disordered epithelial cell growth with nuclear atypia, considered a direct precursor to carcinoma.
Precancerous lesions of gastric cancer (PLGC): Mucosal changes, including atrophy, metaplasia and dysplasia, that predispose to malignancy.
References
- The safety and efficacy of Houtou Jianweiling tablet in patients with chronic non-atrophic gastritis: a double-blind, non-inferiority, randomized controlled trial. Frontiers in Pharmacology (2024).
- Chronic gastritis in China: a national multi-center survey. BMC Gastroenterology (2014).
- Prevalence and associated risk factors of gastritis among patients visiting Saint Paul Hospital Millennium Medical College, Addis Ababa, Ethiopia. PLOS ONE (2021).
- Development of an artificial intelligent model for pre-endoscopic screening of precancerous lesions in gastric cancer. Chinese Medicine (2024).
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