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Título: | Hypoallergenic hydrolysates of egg white proteins modulate allergen responses induced ex vivo on spleen cells from sensitized mice |
Autor: | Lozano-Ojalvo, Daniel CSIC ORCID; Molina, Elena CSIC ORCID ; López-Fandiño, Rosina CSIC ORCID | Palabras clave: | Food allergy Hypoallergenic egg white hydrolysates Th1 and Th2 cytokines BALB/c mice Immunomodulatory peptides |
Fecha de publicación: | 2016 | Editor: | Elsevier | Citación: | Food Research International 89(1): 661-669 (2016) | Resumen: | This study describes the in vivo allergenicity of enzymatic hydrolysates of egg white proteins (ovalbumin, lysozyme and ovomucoid) and explores the possibility that they could modulate T cell cytokine responses to egg allergens ex vivo, using splenocytes from BALB/c mice sensitized to individual egg proteins or to their mixtures in different proportions. The hydrolysate of ovalbumin with pepsin could be regarded as a good candidate for peptide-based immunotherapy on the grounds of its reduced ability to trigger allergic symptoms in a passive cutaneous anaphylaxis assay and its potential to reduce Th2 responses (release f IL-4 and IL-5) induced by egg allergens in the spleen cell cultures, but also to enhance Th1 responses (release of TNF-¿ and IFN-¿). While it is possible to obtain chromatographic fractions containing peptides with different Th2-inhibiting or promoting properties, as judged by cytokine production, selective peptide enrichment did not lead to an increase in the immunomodulating efficiency as compared with thewhole ovalbumin hydrolysate, possibly due to the presence in the latter of a combination of immunogenic peptides with synergistic or adjuvant actions. | URI: | http://hdl.handle.net/10261/150253 | DOI: | 10.1016/j.foodres.2016.09.021 | Identificadores: | doi: 10.1016/j.foodres.2016.09.021 issn: 0963-9969 e-issn: 1873-7145 |
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