[Clinical and pathological characteristics of Helicobacter pylori-associated chronic gastritis]

Area of Science:

• Gastroenterology
• Pathology
• Microbiology

Background:

• Helicobacter pylori (Hp) is a common pathogen linked to various gastrointestinal diseases.
• Chronic gastritis is a prevalent condition with diverse etiologies.
• Understanding Hp's specific pathological impact is crucial for diagnosis and management.

Purpose of the Study:

• To delineate the clinical and pathological features of Helicobacter pylori-associated gastritis.
• To compare Hp-positive and Hp-negative chronic gastritis patients.

Main Methods:

• A comparative study involving 173 patients with chronic gastritis.
• Categorization into Hp-positive (99 patients) and Hp-negative (74 patients) groups.
• Assessment of clinical symptoms, gastric acid secretion, gastrin levels, gastritis grades, and histological changes (atrophy, intestinal metaplasia).

Main Results:

• No significant differences in clinical symptoms, gastric acid secretion, or basal gastrin levels between Hp-positive and Hp-negative groups.
• Markedly higher grades of chronic and active gastritis in Hp-positive patients.
• Hp infection confirmed in 91.2% of patients with active gastritis.
• Increased Hp density correlated with higher gastritis grades, particularly severe active gastritis.
• Significantly higher prevalence of glandular atrophy and intestinal metaplasia in the antral mucosa of Hp-positive patients.
• No significant difference in overall duodenogastric reflux rates, but a trend towards lower moderate-to-severe reflux in Hp-positive patients.

Conclusions:

• Helicobacter pylori infection is strongly associated with increased severity of chronic gastritis, active gastritis, glandular atrophy, and intestinal metaplasia.
• Clinical presentation and gastric acid secretion do not reliably differentiate Hp-positive from Hp-negative gastritis.
• Histopathological assessment is key for identifying Hp-associated changes.