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Association between gastric atrophy and Helicobacter pylori infection in Japanese children: a retrospective

Seiichi Kato1, Shigemi Nakajima, Yoshikazu Nishino

  • 1Department of Pediatrics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan. skato@ped.med.tohoku.ac.jp

Digestive Diseases and Sciences
|January 18, 2006
PubMed

Insights

Helicobacter pylori infection causes gastric atrophy in Japanese children, particularly in the antrum. Further research is needed to assess gastric cancer risk in these children.

Area of Science:

  • Pediatric Gastroenterology
  • Infectious Diseases
  • Pathology

Background:

  • Helicobacter pylori (H. pylori) infection is a common cause of gastritis.
  • Gastric atrophy and intestinal metaplasia are precancerous conditions.
  • The long-term effects of H. pylori infection on gastric mucosa in children are not fully understood.

Purpose of the Study:

  • To investigate the association between H. pylori infection, mucosal inflammation, and gastric atrophy in Japanese children.
  • To determine the prevalence and characteristics of H. pylori-related gastritis in pediatric patients.

Main Methods:

  • Retrospective study of 196 Japanese children (ages 1-16) with H. pylori status assessed.
  • Analysis of antral and corpus biopsy specimens using the Updated Sydney System.
  • Comparison of inflammation, activity, atrophy, and intestinal metaplasia between infected and non-infected groups.

Main Results:

  • H. pylori-infected children showed significantly higher inflammation and gastritis activity in both antrum and corpus.
  • Prevalence of grade 2 or 3 atrophy was 10.7% in the antrum and 4.3% in the corpus of infected children.
  • Atrophy in the antrum correlated with gastritis activity, while in the corpus, it correlated with H. pylori density, inflammation, and activity.

Conclusions:

  • H. pylori-induced gastric inflammation can lead to gastric atrophy in Japanese children, predominantly in the antrum.
  • The findings highlight the potential for precancerous changes in children with H. pylori infection.
  • Further studies are required to evaluate the risk of gastric cancer in H. pylori-infected children with gastric atrophy.

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