Maria Ruano-Zaragoza1,2, Maria Luisa Somoza3, Teodorikez Wilfox Jiménez-Rodriguez4, Victor Soriano-Gomis4,5, Purificación González-Delgado4,5, Angel Esteban-Rodriguez6, Antonio Palazón-Bru5, Miguel Blanca7, Javier Fernández-Sánchez5. 1. Allergy Section, ARADyAL Spanish Network, Alicante General University Hospital-ISABIAL, Alicante, Spain, maria.ruazara@gmail.com. 2. PhD Program in Public Health, Medical and Surgical Sciences. Miguel Hernandez University, Alicante, Spain, maria.ruazara@gmail.com. 3. Allergy Service, Hospital Infanta Leonor, Madrid, Spain. 4. Allergy Section, ARADyAL Spanish Network, Alicante General University Hospital-ISABIAL, Alicante, Spain. 5. Clinical Medicine Department, Miguel Hernandez University, Alicante, Spain. 6. Clinical Analysis Department, Alicante General University Hospital, Alicante, Spain. 7. Section of Allergy, Infanta Leonor University Hospital, Madrid, Spain.
Abstract
BACKGROUND: Component-resolved diagnosis reveals the IgE response to many inhaled, food, and other allergens, improving the understanding and diagnosis of allergic diseases. OBJECTIVE: The aims of the study are to study the recognition of different lipid transfer proteins (LTPs) and other allergen families in a large group of people sensitized to Pru p 3 and to analyze the relationship between the clinical entities and the allergens. METHODS: This cross-sectional study included a large cohort of patients with positive skin tests to peach fruit and Pru p 3 specific IgE antibodies. Respiratory and food allergy symptoms were collected, and we performed prick tests with pollen, plant food, and other allergens plus the ImmunoCAP ISAC assay. RESULTS: Our sample consisted of 421 people with a mean age of 33.25 years (range 16-68); 54.6% were women. Clinical entities included anaphylaxis (37.1%), urticaria (67.9%), and oral allergy syndrome (59.1%). Rhinitis, rhinoconjunctivitis, and/or asthma were diagnosed in 71.8% of the participants. The most pronounced correlation existed between sensitization to Pru p 3 and to Jug r 3, Pla a 3, Ara h 9, and Cor a 8. We found a higher incidence of anaphylaxis in people with 5 or more recognized LTPs. No association was observed between inhaled and food allergies. CONCLUSION: Most Pru p 3-sensitized participants were sensitized to additional allergens from the same family and, to a lesser extent, to other allergens, mainly in the profilin and PR-10 protein families. Anaphylaxis occurred in more than a third of the cases evaluated, and almost three-quarters of them had respiratory symptoms. Respiratory and food allergies involving LTPs do not seem to be associated.
BACKGROUND: Component-resolved diagnosis reveals the IgE response to many inhaled, food, and other allergens, improving the understanding and diagnosis of allergic diseases. OBJECTIVE: The aims of the study are to study the recognition of different lipid transfer proteins (LTPs) and other allergen families in a large group of people sensitized to Pru p 3 and to analyze the relationship between the clinical entities and the allergens. METHODS: This cross-sectional study included a large cohort of patients with positive skin tests to peach fruit and Pru p 3 specific IgE antibodies. Respiratory and food allergy symptoms were collected, and we performed prick tests with pollen, plant food, and other allergens plus the ImmunoCAP ISAC assay. RESULTS: Our sample consisted of 421 people with a mean age of 33.25 years (range 16-68); 54.6% were women. Clinical entities included anaphylaxis (37.1%), urticaria (67.9%), and oral allergy syndrome (59.1%). Rhinitis, rhinoconjunctivitis, and/or asthma were diagnosed in 71.8% of the participants. The most pronounced correlation existed between sensitization to Pru p 3 and to Jug r 3, Pla a 3, Ara h 9, and Cor a 8. We found a higher incidence of anaphylaxis in people with 5 or more recognized LTPs. No association was observed between inhaled and food allergies. CONCLUSION: Most Pru p 3-sensitized participants were sensitized to additional allergens from the same family and, to a lesser extent, to other allergens, mainly in the profilin and PR-10 protein families. Anaphylaxis occurred in more than a third of the cases evaluated, and almost three-quarters of them had respiratory symptoms. Respiratory and food allergies involving LTPs do not seem to be associated.