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Bronchial challenge with Tri a 14 as an alternative diagnostic test for Baker’s asthma
Armentia, A; Garrido-Arandia, M; Cubells-Baeza, N; Gómez-Casado, C; Díaz-Perales, A.
Affiliation
  • Armentia, A; University Hospital Rio Hortega. Allergy section. Valladolid. Spain
  • Garrido-Arandia, M; Centre for Plant Biotechnology and Genomics (UPM-INIA). Madrid. Spain
  • Cubells-Baeza, N; Centre for Plant Biotechnology and Genomics (UPM-INIA). Madrid. Spain
  • Gómez-Casado, C; Centre for Plant Biotechnology and Genomics (UPM-INIA). Madrid. Spain
  • Díaz-Perales, A; Centre for Plant Biotechnology and Genomics (UPM-INIA). Madrid. Spain
J. investig. allergol. clin. immunol ; 25(5): 352-357, 2015. tab, ilus
Article in Es | IBECS | ID: ibc-144653
Responsible library: ES1.1
Localization: BNCS
ABSTRACT
Background: Baker's asthma (BA) is the most prevalent occupational respiratory disease in developed countries. It is caused by inhalation of wheat dust in the working environment and affects 1%-10% of workers in the baking industry. Diagnosis of BA is based on bronchial challenge with wheat, a technique that carries a high risk for patients. The wheat lipid transfer protein Tri a 14 is a major allergen in BA. Objective: The aim of our study was to characterize Tri a 14 as a marker of BA in order to prevent patients from having to undergo bronchial challenge with wheat. Methods: The study population comprised 55 patients selected at the Rio Hortega Hospital, Valladolid, Spain. Patients with BA were diagnosed using a skin prick test (SPT) with wheat and Tri a 14 and bronchial challenge test (BCT) with wheat. Patients with food allergy had a clear clinical history of allergy to peach confirmed by positive SPT to peach extract and Pru p 3. Results: All patients in the BA group had a positive SPT result with wheat (100%), and most had positive results with Tri a 14 (95%). A positive BCT result with Tri a 14 was also observed in 22 of 27 of the patients with BA (82%). The response to Tri a 14 was specifically associated with BA. Conclusion: Tri a 14 is a good marker of BA and can be used in SPT and BCT as an alternative diagnostic method, thus avoiding bronchial challenge with wheat and reducing the risk associated with this technique (AU)
RESUMEN
Antecedentes: El asma del panadero (BA) es la enfermedad respiratoria ocupacional más frecuente en los países occidentales. Está causada por la inhalación diaria de harina de trigo en el entorno de trabajo, afectando entre 1-10% de los trabajadores de la industria panadera. El diagnóstico de BA se basa en la provocación bronquial con trigo, una técnica de alto riesgo para los pacientes. La proteína de transferencia de lípidos de trigo (LTP) Tri a 14 ha sido descrita como alérgeno principal en esta patología. Objetivo: El objetivo de nuestro estudio ha sido caracterizar Tri a 14 como marcador de BA, y así evitar la provocación bronquial con trigo en estos pacientes. Métodos: Para ello, se seleccionaron cincuenta y cinco pacientes en el Hospital Río Hortega de Valladolid, España. Resultados: Los pacientes diagnosticados con BA mostraron prueba cutánea (SPT) positiva a trigo (100%) y la mayoría también a Tri a 14 (95%). Todos ellos, fueron sometidos a provocación bronquial con Tri a 14, observándose un resultado positivo en 22/27 de los sujetos evaluados (82%). Conclusiones: En base a esto, se puede concluir que Tri a 14 es un buen marcador de BA, y podría ser utilizado en SPT y provocación bronquial como método diagnóstico, reduciendo el uso de la provocación bronquial con trigo y el riesgo asociado a esta técnica (AU)
Subject(s)
Full text: 1 Collection: 06-national / ES Database: IBECS Main subject: Asthma / Bronchial Provocation Tests / Skin Tests / Allergens / Immunologic Techniques / Desensitization, Immunologic / Wheat Hypersensitivity / Allergy and Immunology / Hypersensitivity Type of study: Diagnostic_studies / Evaluation_studies Limits: Adult / Female / Humans / Male Language: Es Journal: J. investig. allergol. clin. immunol Year: 2015 Document type: Article
Full text: 1 Collection: 06-national / ES Database: IBECS Main subject: Asthma / Bronchial Provocation Tests / Skin Tests / Allergens / Immunologic Techniques / Desensitization, Immunologic / Wheat Hypersensitivity / Allergy and Immunology / Hypersensitivity Type of study: Diagnostic_studies / Evaluation_studies Limits: Adult / Female / Humans / Male Language: Es Journal: J. investig. allergol. clin. immunol Year: 2015 Document type: Article