Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Wheat lipid transfer protein is a major allergen associated with baker's asthma.
Year:2007
Research Areas
  • Molecular biology
Information
Abstract
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.
International
No
JCR
No
Title
J Allergy Clin Immunol
ISBN
17716720
Impact factor JCR
0
Impact info
Volume
120
Journal number
5
From page
1132
To page
1138
Month
NOVIEMBRE
Ranking
Participants
  • Autor: Gabriel Salcedo Duran (UPM)
  • Autor: Araceli Diaz Perales (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Biotecnología de Proteínas Vegetales
  • Departamento: Biotecnología
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