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Memorias de investigación
Artículos en revistas:
Wheat lipid transfer protein is a major allergen associated with baker's asthma.
Año:2007
Áreas de investigación
  • Biología molecular
Datos
Descripción
BACKGROUND: Baker's asthma is a frequent occupational allergic disorder mainly caused by inhalation of cereal flours. Lipid transfer proteins (LTPs) constitute a family of plant food panallergens, but their role as inhalant and wheat allergens is still unclear. OBJECTIVE: We sought to explore the involvement of wheat LTPs in baker's asthma caused by wheat flour sensitization. METHODS: Forty patients with occupational asthma caused by wheat flour inhalation were studied. Wheat LTP, Tri a 14, was purified by using a 2-step chromatographic protocol and characterized by N-terminal amino acid sequencing and 3-dimensional modeling. Its reactivity was confirmed by means of IgE immunodetection, ELISA and ELISA-inhibition assays, and skin prick tests. RESULTS: Specific IgE to Tri a 14 was found in 60% of 40 individual sera from patients with baker's asthma, and the purified allergen elicited positive skin prick test reactions in 62% of 24 of these patients. Tri a 14 and peach LTP, Pru p 3, showed a sequence identity of 45%, but the low cross-reactivity between both allergens detected in several individual sera reflected great differences in their 3-dimensional IgE-binding regions. CONCLUSIONS: Wheat LTP is a major inhalant allergen associated with baker's asthma caused by wheat flour sensitization. Poor cross-reactivity with its peach homolog was found in some patients. CLINICAL IMPLICATIONS: LTPs can be considered relevant inhalant allergens linked to respiratory disorders. LTP from wheat (Tri a 14) can be used as a helpful tool for the diagnosis of baker's asthma.
Internacional
No
JCR del ISI
No
Título de la revista
J Allergy Clin Immunol
ISSN
17716720
Factor de impacto JCR
0
Información de impacto
Volumen
120
DOI
Número de revista
5
Desde la página
1132
Hasta la página
1138
Mes
NOVIEMBRE
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Gabriel Salcedo Duran (UPM)
  • Autor: Araceli Diaz Perales (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Biotecnología de Proteínas Vegetales
  • Departamento: Biotecnología
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