Clinical significance of component allergens in fagales pollen-sensitized peanut allergy in Korea

Kyung Hee Park, Young Woong Son, Sang Chul Lee, Kyunguk Jeong, Da Woon Sim, Hye Jung Park, Sooyoung Lee, Jae Hyun Lee, Jung Won Park

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Purpose: Clinical features of peanut allergy can range from localized to systemic reactions. Because peanut and birch pollen have cross-reactivity, peanut can lead to localized allergic reaction in Fagales pollen-sensitized oral allergy syndrome (OAS) patients without peanut sensitization per se. The purpose of this study was to discriminate true peanut food allergy from cross-reactive hypersensitivity in birch-sensitized peanut allergy. Methods: Birch-sensitized (n=81) and peanut anaphylaxis patients (n=12) were enrolled. Peanut-related allergic reactions and sensitization profiles were examined. Specific IgE to Fagales tree pollens (birch, oak), peanut, and their component allergens (Bet v 1, Bet v 2, Ara h 1, Ara h 2, Ara h 3, Ara h 8, and Ara h 9) were evaluated. Based on these specific IgEs and clinical features, the patients were classified into 4 groups: group 1 (Fagales pollen allergy without OAS), group 2 (Fagales pollen allergy with OAS), group 3 (OAS with peanut anaphylaxis), and group 4 (peanut anaphylaxis). Results: After peanut consumption, one-third of OAS patients experienced oral symptoms not associated with peanut sensitization. Ara h 1 or Ara h 2 was positive in peanut anaphylaxis patients, whereas Ara h 8 was positive in OAS patients. There were 4 patients with both peanut anaphylaxis and OAS (group 3). Both Ara h 2 and Ara h 8 were positive in these patients. Foods associated with OAS in Korea showed unique patterns compared to Westernized countries. Conclusions: Ara h 2 and Ara h 8 may be important component allergens for discriminating peanut allergy.

Original languageEnglish
Pages (from-to)505-511
Number of pages7
JournalAllergy, Asthma and Immunology Research
Volume8
Issue number6
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology
  • Pulmonary and Respiratory Medicine

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