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Aoki Y, Yagami A, Sakai T, Ohno S, Sato N, Nakamura M, Futamura K, Suzuki K, Horiguchi T, Nakata S, Matsunaga K. Alpha/Beta Gliadin MM1 Is a Novel Antigen for Wheat-Dependent Exercise-Induced Anaphylaxis. Int Arch Allergy Immunol 2023; 184:1022-1035. [PMID: 37473737 DOI: 10.1159/000531056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 05/05/2023] [Indexed: 07/22/2023] Open
Abstract
INTRODUCTION Screening for ω-5 gliadin specific IgE antibody (sIgE) has high diagnostic utility in cases of suspected wheat-dependent exercise-induced anaphylaxis (WDEIA); however, negative cases may require confirmatory tests, such as the oral challenge test. Thus, newly identified allergens that can be used for the serological diagnosis of WDEIA are needed. This study aimed to identify additional sIgE biomarkers of WDEIA. METHODS Forty-two patients with WDEIA (5 negative/37 positive for ω-5 gliadin sIgE) were enrolled. For comparison, 8 patients with immediate-type wheat allergy without WDEIA and 20 healthy controls without wheat allergy were also enrolled. Extracted wheat proteins were separated by 2D-PAGE. Proteins that reacted with serum IgE antibody in 2D Western blotting (2D-WB) were identified using mass spectrometry. Recombinant proteins were synthesized in Escherichia coli, and the antigenicity was tested using ELISA and the basophil activation test. RESULTS In 2D-WB, nine proteins reacted with the serum IgE antibody from at least 60% of patients with WDEIA (n ≥ 25/42). ELISA revealed that alpha/beta gliadin MM1 exhibited the highest positive immunoreactivity in 23 of 26 patients who were positive for ω-5 gliadin sIgE (88%) and in 5 of 5 patients who were negative for ω-5 gliadin sIgE (100%). Alpha/beta gliadin MM1 exhibited significantly higher basophil activation in 14 patients with WDEIA when compared to 5 individuals without a wheat allergy. CONCLUSIONS Alpha/beta gliadin MM1 sIgE exhibited the highest seropositivity, even among patients who were negative for ω-5 gliadin sIgE. The inclusion of alpha/beta gliadin MM1 in allergen-sIgE tests may improve the sensitivity for diagnosing WDEIA.
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Affiliation(s)
- Yuji Aoki
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- Department of Otolaryngology, Fujita Health University School of Medicine, Nagoya, Japan
- General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Akiko Yagami
- Department of Allergology, Fujita Health University School of Medicine, Nagoya, Japan
- General Allergy Center, Fujita Health University, Nagoya, Japan
| | - Tomomi Sakai
- General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Satoshi Ohno
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
- Department of Respiratory Medicine, Center for One Medicine, Toyota Regional Medical Center, Toyota, Japan
| | - Nayu Sato
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Masashi Nakamura
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Kyoko Futamura
- Department of Allergology, Fujita Health University School of Medicine, Nagoya, Japan
- General Allergy Center, Fujita Health University, Nagoya, Japan
| | - Kayoko Suzuki
- Department of Allergology, Fujita Health University School of Medicine, Nagoya, Japan
- General Allergy Center, Fujita Health University, Nagoya, Japan
| | - Takahiko Horiguchi
- General Allergy Center, Fujita Health University, Nagoya, Japan
- Department of Respiratory Medicine, Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
| | - Seiichi Nakata
- Department of Otolaryngology, Fujita Health University School of Medicine, Nagoya, Japan
- General Allergy Center, Fujita Health University, Nagoya, Japan
| | - Kayoko Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
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Muthukumar J, Selvasekaran P, Lokanadham M, Chidambaram R. Food and food products associated with food allergy and food intolerance – An overview. Food Res Int 2020; 138:109780. [DOI: 10.1016/j.foodres.2020.109780] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 02/07/2023]
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