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Clinicopathological features and mucosal microbiota in gastric mucosal damage between nodular and non-nodular gastritis in children with Helicobacter pylori infection

INTERNATIONAL IMMUNOPHARMACOLOGY(2024)

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摘要
Aims: Nodular gastritis (NG) represents a frequently observed clinical presentation of Helicobacter pylori ( H. pylori ) infection in pediatric patients. This investigation aimed to explore the microbiota and histological features of the gastric mucosa in children with H. pylori colonized NG. Main methods: The current investigation examined a sample of 120 children who underwent gastroscopy due to symptoms of gastrointestinal distress, which showed that 64 were patients with H. pylori infection. Endoscopic procedures were conducted to acquire mucosal biopsies for the purpose of DNA extraction and histopathological analysis. The 16S rRNA profiling was utilized to examine the gastric mucosal microbiota. Key findings: In conjunction with endoscopic evaluation, 26 of 64 patients were diagnosed with NG. The NG group had significantly higher inflammation scores and activity scores on histological assessment than the nonNG group. The NG group exhibited a significant reduction in the richness levels of the five genera. In terms of the predicted functions, the pathways of synthesis and degradation of ketone bodies and phagosome in the NG group were less abundant compared with the non-NG group, while the Wnt signaling pathway was significantly enriched. NG does not increase a microbial community that possesses genotoxic potential within the gastric mucosa. Significance: In conclusion, NG group exhibited significant severe inflammation and reduced abundance levels of several bacterial genera compared to the non-NG group. However, individuals with NG did not have a dysregulated microbial community with genotoxic potential.
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关键词
Helicobacter pylori,Nodular gastritis,Children,Mucosal microbiota,Histological features
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