The value of anti-Helicobacter pylori IgG antibodies in establishing eradication of infection in children

A. Fradkin, Y. Yahav, A. Diver-Haber, B. Weisselberg, A. Jonas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The aim of this study was to evaluate the performance of anti-Helicobacter pylori (H. pylori). IgG antibodies in monitoring eradication of infection in children. Forty-seven H. pylori-infected children (aged 12.5 ± 3.0 years, range 6.5-18 years) were followed for a mean of 30.3 months (range 6-66 months). Patients were divided into those with eradicated infection and those with ongoing infection, as determined by antral biopsy-related tests (histology, urease and culture). Anti-H. pylori antibodies (EIA) were tested at diagnosis- and follow-up and changes of antibody titers were compared between the two groups. Twenty-five of 26 non-eradicated patients showed persistently high levels of antibodies throughout the study. One patient had non-detectable antibodies despite an ongoing infection for 12 months. Patients with eradicated infection showed a progressive fall of antibody levels from 52.9 ± 32.4 U/ml at diagnosis to 17.5 ± 4.1 U/ml at 6 months (p < 0.007) and 4.4 ± 0.7 U/ml at ≤ 12 months (p < 0.002). In 17 of 21 eradicated patients, serum antibodies normalized during the follow-up period; in 4 of the 21 patients, a decrease of ≤ 40% of the initial value was observed during the 6-month follow-up. The validity of serology in the evaluation of H. pylori infection had a sensitivity of 100% specificity of 96% and positive predictive and negative predictive values of 95% and 100% respectively. Our conclusion is that serial determination of anti-H. pylori antibodies is a reliable method for the follow-up and monitoring of H. pylori eradication in children and adolescents.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalIsrael Journal of Medical Sciences
Volume33
Issue number2
StatePublished - Feb 1997
Externally publishedYes

Keywords

  • Eradication
  • Helicobacter pylori
  • Serum antibodies

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