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Air pollution and atopy.

S Boutin-Forzano1, Y Hammou, M Gouitaa

  • 1Service de Pneumologie-Allergologie, Hôpital Nord, 13915 Marseille et Equipe d'Accueil no 1784, Université de la Méditerranée, Marseille.

European Annals of Allergy and Clinical Immunology
|March 5, 2005
PubMed
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Air pollutants like diesel exhaust can worsen allergy symptoms and potentially trigger new allergic diseases. Research shows these pollutants affect pollen and immune responses in both animals and humans.

Area of Science:

  • Environmental Health
  • Immunology
  • Allergology

Background:

  • Air pollution is a growing global concern with potential health implications.
  • Atopy, a predisposition to allergic diseases, affects a significant portion of the population.
  • The link between air pollutants and the development or exacerbation of atopy requires further investigation.

Purpose of the Study:

  • To explore the multifaceted relationship between various air pollutants and atopy.
  • To investigate the mechanisms by which air pollutants influence allergic responses.
  • To assess the potential of air pollutants to induce new allergic diseases.

Main Methods:

  • In vitro studies exposing pollen to air pollutants.
  • Animal experiments examining IgE-response to pollutants.

Related Experiment Videos

  • Human studies including epidemiological surveys and controlled exposures.
  • Analysis of indoor pollutants like volatile organic compounds.

    • Main Results:

    • In vitro: Air pollutants induced morphological changes in pollen, potentially releasing more allergens.
    • In vivo (animal and human): Exposure to air pollutants, particularly diesel exhaust particulates, triggered IgE-responses.
    • Epidemiological data indicated air pollutants exacerbate existing allergy symptoms.
    • Evidence suggests diesel exhaust particulates may induce allergic sensitization and atopic diseases in humans.
    • Volatile organic compounds showed pro-inflammatory properties and favored T-cell sensitization.
    • Results on secondhand smoke and occupational hazards showed discordant findings.

    Conclusions:

    • Air pollutants demonstrably influence allergic responses and trigger symptoms in atopic individuals.
    • Evidence suggests a role for air pollutants, especially diesel exhaust, in the induction of allergic sensitization and disease.
    • Further research is needed to clarify the impact of various pollutants, including indoor ones, on atopy development.