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Related Experiment Videos

Seroconversion for Helicobacter pylori

E J Kuipers1, A S Peña, G van Kamp

  • 1Department of Gastroenterology, Free University Hospital, Amsterdam, The Netherlands.

Lancet (London, England)
|August 7, 1993
PubMed
Summary
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Helicobacter pylori (H pylori) infection likely occurs in childhood, not uniformly across ages. Some patients may naturally eliminate H pylori without treatment.

Area of Science:

  • Gastroenterology
  • Epidemiology
  • Immunology

Background:

  • Prevalence of Helicobacter pylori antibodies increases with age.
  • Uncertainty exists regarding whether H pylori infection occurs uniformly across age groups or predominantly in childhood.
  • Limited follow-up data are available on H pylori infection rates and its natural course in untreated populations.

Purpose of the Study:

  • To investigate the age-specific incidence of H pylori infection.
  • To determine if H pylori antibody concentrations increase with age.
  • To observe the natural course of H pylori infection, including spontaneous clearance, in an untreated cohort.

Main Methods:

  • Longitudinal study measuring H pylori IgG antibody concentrations in serum samples from patients.

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  • Two serum samples were collected from 115 eligible patients with a mean interval of 11.5 years.
  • Analysis of infection incidence, seroreversion, and antibody concentration changes across different age cohorts.

    • Main Results:

    • The annual H pylori infection rate was 0.30% (95% CI 0.04-1.08%) during the follow-up period.
    • Spontaneous clearance of H pylori infection (seroreversion) was observed in 6 patients, 3 after gastric surgery and 3 without known cause.
    • No significant increase in H pylori antibody concentrations with age was detected, and infection rates showed a non-significant decrease in older age cohorts.

    Conclusions:

    • The findings strongly support the hypothesis that H pylori infection is predominantly acquired during childhood.
    • Spontaneous elimination of H pylori infection can occur in a subset of patients, even without specific eradication therapy.
    • The study highlights the importance of early-life infection and the potential for natural clearance of H pylori.