Correlation of anti-pru p 3 IgE levels with severity of peach allergy reactions in children

• Published in: Annals of allergy, asthma, & immunology Vol. 108; no. 4; pp. 271 - 274
• Main Authors: Novembre, Elio, MD, PhD, Mori, Francesca, MD, PhD, Contestabile, Simona, MD, Rossi, Maria Elisabetta, MD, Pucci, Neri, MD
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.04.2012; Elsevier
• Subjects: Administration, Oral; Allergens - adverse effects; Allergens - immunology; Allergy and Immunology; Antigens, Plant - adverse effects; Antigens, Plant - immunology; Biological and medical sciences; Carrier Proteins - adverse effects; Carrier Proteins - immunology; Child; Dermatology; Disease Progression; Female; Food Hypersensitivity - diagnosis; Food Hypersensitivity - epidemiology; Food Hypersensitivity - immunology; Food Hypersensitivity - physiopathology; Fundamental and applied biological sciences. Psychology; Fundamental immunology; Humans; Immunization; Immunoglobulin E - blood; Italy - epidemiology; Male; Medical sciences; Plant Proteins - adverse effects; Plant Proteins - immunology; Prunus - adverse effects; Recombinant Proteins - adverse effects; Recombinant Proteins - immunology; Sarcoidosis. Granulomatous diseases of unproved etiology. Connective tissue diseases. Elastic tissue diseases. Vasculitis; Italy; Human; Allergy; Immunopathology; Immunology; Dermatology; IgE; Peach; Child
• ISSN: 1081-1206; 1534-4436
• DOI: 10.1016/j.anai.2012.02.006

Abstract Background Peach allergy is regarded as one of the most important fresh fruit allergies. Data are available on the state-of-the-art diagnosis, including food challenges, and a component-resolved diagnosis. However, the roles played by different peach allergens with respect to symptom severity are not completely understood. Objective To evaluate the role of serum specific IgE to peach and recombinant allergens in the diagnosis of peach allergies in Italian children. Methods Forty-four children with peach allergy confirmed by a placebo-controlled food challenge were divided into 2 groups based on their symptom severity: patients with mild oral allergy syndrome (OAS) and patients with systemic symptoms (SS). The presence of specific IgE to peach and rPru p 1, rPru p 3, and rPru p 4 was determined. Results The presence of specific IgE to Pru p 4 and Pru p 1 was found significantly more frequently in patients with OAS, whereas specific IgE to Pru p 3 was not found significantly more frequently in patients with SS. Only anti-rPru p 4 IgE levels were significantly higher in patients with OAS, whereas no significant differences were found in anti-rPru p 1 and anti-rPru p 3 IgE levels between patients with OAS compared with patients with SS. Conclusion In Italian children with peach allergies, the presence of specific IgE to Pru p 3 is not associated with SS, and the levels of specific IgE to Pru p 3 do not correlate with the severity of the reactions.