Analysis of allergens related to severe reactions peach allergy

2017 Fiscal Year Final Research Report

• Project/Area Number: 26461663
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dermatology
• Research Institution: Yokohama City University
• Principal Investigator: INOMATA Naoko 横浜市立大学, 医学部, 准教授 (20347313)
• Co-Investigator(Kenkyū-buntansha): 宮川 まみ 横浜市立大学, 附属病院, 指導診療医 (40707650) ; 相原 道子 横浜市立大学, 医学研究科, 教授 (90231753)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: モモアレルギー / ジベレリン制御タンパク / peamaclein / 交差反応 / アナフィラキシー / 果物アレルギー / Pru p 7 / Pru m 7

Outline of Final Research Achievements

We found that gibberellin-regulated protein (GRP), Pru p 7, could be a marker associated with systemic reactions in peach allergy in Japan. Along with the absence of co-sensitization to pollens related to pollen-food allergy syndrome (PFAS), facial edema, especially eyelid edema, and laryngeal tightness after the ingestion of peaches could be a predictive factor for Pru p 7 sensitization. We established two allergic tests, the specific IgE measurement and the basophil activation test using Pru p 7.The prevalence of GRP sensitization was high in fruit allergy patients except for patients with PFAS. GRP sensitized patients might have allergies to multiple fruits and may show peculiar characteristics such as facial swelling and cofactor dependence. The partial sequence of amino acids in Japanese apricot and orange GRPs have been submitted to WHO-IUIS nomenclature Subcommittee, which assigned the designation of Pru m 7 and Cit s 7 as new Japanese apricot and orange allergens, respectively.

Free Research Field

アレルギー