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Related Experiment Videos

Allergy to pine nut.

M A Añó1, J P Maselli, M L Sanz

  • 1Departamento de Alergología e Inmunología Clínica, Clínica Universitaria de Navarra, Universidad de Navarra, Pamplona, Spain.

Allergologia Et Immunopathologia
|April 18, 2002
PubMed
Summary
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Food allergy is common, particularly in atopic individuals. This study reveals common allergenic proteins between pine nuts and peanuts, highlighting potential cross-reactivity risks for consumers.

Area of Science:

  • Allergy and Immunology
  • Food Science

Background:

  • Food allergy prevalence is increasing, especially in atopic patients.
  • Pine nuts (Pinus pinea) are a common food source with documented allergic reactions.
  • Cross-reactivity between pine nuts and other allergens like almonds has been suggested.

Observation:

  • A 10-year-old boy with pollen sensitization experienced anaphylaxis after consuming pine nuts.
  • In vivo (prick tests) and in vitro (IgE, histamine release, immunoblotting) tests were conducted.
  • Literature review on pine nut allergy and cross-reactivity was performed.

Findings:

  • The study identified common antigenic proteins between pine nuts and peanuts.
  • Immunoblotting confirmed shared allergenic components.
  • Allergic reactions to pine nuts can occur at a young age.

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Implications:

  • Pine nut allergy may be more prevalent than currently recognized due to common consumption.
  • Understanding cross-reactivity is crucial for diagnosing and managing food allergies.
  • Further research into specific pine nut allergens and cross-reactive epitopes is warranted.