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Peripheral blood lymphocyte population in children infected with Helicobacter pylori

E Maciorkowska1, M Kaczmarski, A Stasiak-Barmuta

  • 1III Department of Children's Diseases, Medical University of Białystok, 15-274 Białystok, J. Waszyngtona 17 (PL). emaciorkowska@o2.pl

Roczniki Akademii Medycznej W Bialymstoku (1995)
|January 24, 2004
PubMed

Insights

In children with Helicobacter pylori infection, peripheral blood T and B lymphocyte levels did not correlate with antrum inflammation. T lymphocytes may play a primary role in this pediatric infection.

Area of Science:

  • Pediatric Gastroenterology
  • Immunology
  • Infectious Diseases

Background:

  • Helicobacter pylori infection in children causes chronic gastric and duodenal inflammation, potentially leading to ulcers.
  • The immune system, particularly T lymphocytes, is implicated in the pathogenesis of chronic gastric inflammation.

Purpose of the Study:

  • To quantify peripheral blood T (CD3+, CD4+, CD8+) and B lymphocyte (CD19+) subpopulations in children with H. pylori infection.
  • To investigate the relationship between these lymphocyte levels and the severity of antrum mucosa inflammation.

Main Methods:

  • Study included 32 children (aged 7-18) with dyspeptic symptoms undergoing upper gastrointestinal endoscopy.
  • Gastric and duodenal mucosa were evaluated histologically using the Sydney System.
  • H. pylori infection severity was assessed via urease test (CLO-test).

Main Results:

  • Moderate antrum inflammation was observed in 41.2% of children.
  • Marked inflammation was present in 58.8% of the study group.
  • No cases of mild antrum inflammation were recorded.

Conclusions:

  • No significant correlation was found between peripheral lymphocyte levels and the degree of antrum inflammation.
  • Findings suggest T lymphocytes may have a predominant role in pediatric H. pylori infections.
  • Further research is needed to elucidate the specific immune mechanisms involved.
Abstract

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