Children monosensitized to pine nuts have similar patterns of sensitization

• Published in: Pediatric allergy and immunology Vol. 23; no. 8; pp. 761 - 764
• Main Authors: Novembre, Elio, Mori, Francesca, Barni, Simona, Ferrante, Giuliana, Pucci, Neri, Ballabio, Cinzia, Uberti, Francesca, Penas, Elena, Restani, Patrizia
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 01.12.2012; Blackwell; Wiley Subscription Services, Inc
• Subjects: Adolescent; Allergens; Anaphylaxis; Angioedema - diagnosis; Angioedema - pathology; Biological and medical sciences; Children; Female; Food allergies; Food hypersensitivity; Fundamental and applied biological sciences. Psychology; Fundamental immunology; Gel electrophoresis; General aspects; Humans; Hypersensitivity; Immunoblotting; Immunoglobulin E; Immunoglobulin E - blood; Immunopathology; Male; Medical sciences; Nut Hypersensitivity - diagnosis; Nut Hypersensitivity - immunology; Nut Hypersensitivity - pathology; Nuts; Nuts - adverse effects; Nuts - chemistry; Nuts - immunology; Pediatrics; pine nuts allergy; Plant Proteins - adverse effects; Plant Proteins - analysis; Sarcoidosis. Granulomatous diseases of unproved etiology. Connective tissue diseases. Elastic tissue diseases. Vasculitis; Skin Tests; Urticaria - diagnosis; Urticaria - immunology; Urticaria - pathology; Human; Allergy; Immunopathology; Pediatrics; Nuts; Immunology; children; immunoblotting; Immunoblotting assay; Sensitization; pine nuts allergy; Child
• ISSN: 0905-6157; 1399-3038; 1399-3038
• DOI: 10.1111/pai.12012

Background Several cases of pine nut allergies and anaphylaxis have been reported in the literature, but only few pine nut allergens have been characterized. The aim of this research is to identify through immunoelectrophoretic techniques the major pine nut allergens in a group of children monosensitized to pine nuts. Methods We studied five children with pine nut allergies and no other sensitization to food except to pine nuts, confirmed by in vivo (prick test, prick‐to‐prick) and in vitro tests (specific IgE determinations [CAP‐FEIA]). The protein profile of pine nuts was analyzed by Sodium Dodecyl sulfate Polyacrylamide Gel Electrophoresis (SDS‐PAGE). Immunoblotting was performed after incubation of membranes with the sera from the children included in the present study. Results Immunoblotting (SDS‐PAGE) demonstrated five similar bands between 6 and 47 kDa in all the subjects studied. Conclusion These bands should be considered the potential allergens for pine nut allergic children.