Review article: Cellular markers in the gastric precancerous process

Area of Science:

• Gastroenterology
• Oncology
• Molecular Biology

Background:

• Gastric cancer develops through a chronic process, often initiated by Helicobacter pylori-associated gastritis.
• Both diffuse and intestinal gastric cancers share common cellular changes, despite some histological and molecular variations.
• Key cellular changes include increased proliferation and altered apoptosis, potentially linked to p53 and TGF-beta signaling pathway disruptions.

Purpose of the Study:

• To investigate the role of H. pylori in the molecular alterations during gastric cancer progression.
• To evaluate the utility of these molecular changes as biomarkers for neoplasia risk in precancerous stages.

Main Methods:

• Review of existing literature on H. pylori, gastric carcinogenesis, and molecular changes.
• Analysis of common cellular alterations in gastric cancer, including proliferation and apoptosis.
• Examination of molecular pathways such as p53 and TGF-beta signaling.

Main Results:

• H. pylori is implicated in the etiology of molecular changes during gastric cancer development.
• Common cellular changes like increased proliferation and apoptosis occur in both major gastric cancer subtypes.
• Mutations in p53 and the TGF-beta receptor type II contribute to altered cell growth regulation.

Conclusions:

• H. pylori may play a significant role in initiating the molecular cascade towards gastric cancer.
• Identified molecular changes represent potential biomarkers for assessing gastric neoplasia risk.
• Understanding these molecular events is crucial for early detection and prevention strategies.