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Related Experiment Videos

Anaphylaxis due to limpet ingestion

T Carrillo1, F Rodríguez de Castro, C Blanco

  • 1Sección de Alergia, Hospital Universitario Ntra. Sra. del Pino, Universidad de Las Palmas de G.C.

Annals of Allergy
|December 1, 1994
PubMed
Summary

Limpets can cause severe allergic reactions, including anaphylaxis, particularly in individuals already sensitized to dust mites. Further research confirms limpet allergy is a significant concern, especially in mite-sensitive populations.

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Area of Science:

  • Allergy and Immunology
  • Marine Biology
  • Food Safety

Background:

  • Limpets (phylum Mollusca) are common sea mollusks in the Canary Islands.
  • Limpet-induced IgE hypersensitivity reactions have been previously documented.
  • This study investigates severe anaphylactic reactions linked to limpet consumption.

Purpose of the Study:

  • To detail six cases of anaphylaxis following limpet ingestion.
  • To confirm specific IgE (Immunoglobulin E) responses using in vivo and in vitro methods.
  • To explore potential cross-reactivity with other allergens.

Main Methods:

  • Six patients experiencing severe bronchospasm post-limpet ingestion were studied.
  • Skin prick tests were conducted using commercial and laboratory-prepared extracts (cooked limpet, aeroallergens, mollusks, crustaceans).

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  • Specific IgE levels were measured using CAP and RAST assays, with CAP inhibition studies to assess cross-reactivity. Mite contamination was ruled out via ELISA.

    • Main Results:

    • All patients showed positive skin prick tests to D. pteronyssinus (dust mites) and cooked limpet extract.
    • Specific IgE to mites and cooked limpet extract was detected via CAP and RAST.
    • CAP inhibition studies ruled out common epitopes between limpet and D. pteronyssinus; ELISA confirmed no significant mite contamination in limpet extract.

    Conclusions:

    • Limpets are identified as a significant potential allergen.
    • Individuals sensitized to D. pteronyssinus may be at higher risk for limpet allergy.
    • This highlights the need for caution in consuming limpets, particularly for at-risk populations.