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Related Experiment Videos

Anisakis simplex allergy after eating chicken meat.

A Armentia1, F J Martin-Gil, C Pascual

  • 1Hospital Rio Hortega, Sección de Alergia, Valladolid, Spain. ALICIAARMENTIA@terra.es

Journal of Investigational Allergology & Clinical Immunology
|August 8, 2006
PubMed
Summary

Highly sensitized individuals may experience allergic reactions to chicken meat due to Anisakis simplex parasite contamination. This study found Anisakis allergens in chicken linked to allergic symptoms in patients with prior Anisakis simplex sensitization.

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Area of Science:

  • Food Allergy
  • Parasitology
  • Immunology

Background:

  • Anisakis simplex is a parasite commonly found in seafood, causing allergic reactions like urticaria, anaphylaxis, and asthma.
  • While seafood is the primary source of Anisakis simplex infection, this study investigated allergic reactions in patients sensitized to the parasite after consuming chicken meat.
  • Chicken feed often contains fishmeal, a potential source of Anisakis simplex contamination in poultry.

Purpose of the Study:

  • To determine if Anisakis simplex parasite proteins in chicken meat are responsible for allergic symptoms in sensitized individuals.
  • To investigate the link between Anisakis simplex sensitization and allergic reactions to chicken consumption.

Main Methods:

  • Conducted in vivo tests including prick, bronchial, and double-blind placebo-controlled challenges with chicken meat on 8 patients.

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  • Performed immunoblotting with patient sera to detect Anisakis simplex sensitization.
  • Analyzed chicken sera for Anisakis simplex proteins, comparing those fed fishmeal with those fed only cereals; excluded other chicken nematode sensitization.

    • Main Results:

    • All 8 patients showed positive reactions to Anisakis simplex via prick and challenge tests.
    • Immunoblotting revealed that 6 patients recognized a 16 kDa Anisakis simplex allergen band when using serum from chickens fed fishmeal.
    • No Anisakis simplex proteins were detected in chickens fed exclusively with cereals.

    Conclusions:

    • In vivo and in vitro tests provide evidence that highly Anisakis simplex-sensitized individuals can detect Anisakis species allergens in chicken meat.
    • This suggests chicken meat can be a source of allergic reactions in individuals with pre-existing Anisakis simplex sensitization.
    • The presence of Anisakis simplex allergens in chicken meat is likely due to contaminated fishmeal in poultry feed.