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A missing link in the hygiene hypothesis?

E A M Gale1

  • 1Diabetes and Metabolism, Division of Medicine, University of Bristol, UK. Edwin.Gale@bristol.ac.uk

Diabetologia
|May 29, 2002
PubMed
Summary
This summary is machine-generated.

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The decline of pinworm (Enterobius vermicularis) infections in children may explain rising rates of type 1 diabetes and asthma. Pinworms might protect against these immune disorders by modulating the immune system.

Area of Science:

  • Immunology
  • Epidemiology
  • Microbiology

Background:

  • Childhood type 1 diabetes and asthma incidence has increased, potentially linked to reduced early immune stimulation (hygiene hypothesis).
  • Regulatory T lymphocytes are implicated in immune system modulation.
  • Parasites and gut microbiota are potential co-evolutionary partners influencing immune responses.

Purpose of the Study:

  • To explore the hypothesis that declining pinworm (Enterobius vermicularis) infections contribute to the rise in childhood immune-mediated disorders.
  • To investigate the potential immunomodulatory role of pinworms in preventing type 1 diabetes and asthma.

Main Methods:

  • Review of epidemiological data on childhood type 1 diabetes, asthma, and pinworm prevalence.
  • Analysis of proposed mechanisms of helminth-induced immune regulation, including regulatory T cells and IL-10.

Related Experiment Videos

  • Consideration of pinworm's role in non-obese diabetic (NOD) mouse models.

    • Main Results:

    • Pinworms (Enterobius vermicularis) may possess immunomodulatory properties, potentially protecting against immune-mediated diseases like type 1 diabetes and asthma.
    • A historical decline in pinworm infestation, coinciding with improved living conditions, might correlate with increased disease incidence.
    • Pinworms' proposed role is immunomodulation, not disease induction, possibly interacting with mucosal immune system development.

    Conclusions:

    • The reduction in pinworm infections could be a factor in the rising epidemiology of childhood atopy and type 1 diabetes.
    • Further research, including case-control studies with serological markers or skin testing, is needed to validate this hypothesis.
    • Understanding the mechanisms could lead to novel immune intervention strategies for autoimmune and allergic diseases.