Searched for: subject%3A%22IgE%22
(1 - 20 of 26)

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de Jongh, H.H.J. (author), de Jong, G.A.H. (author), Apostolovic, D. (author), Taylor, S.L. (author), Baumert, J.L. (author), Koppelman, S.J. (author)
This work reports on the effect of heat treatment on the protein conformational stability of intact and post-translationally cleaved peanut allergen Ara h 6 in relation to IgE-binding. Intact and post-translationally cleaved Ara h 6 are structurally similar and their strong resistance to denaturant-induced unfolding is comparable. Only upon...
article 2020
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Lozano-Ojalvo, D. (author), Benede, S. (author), Antunes, C.M. (author), Bavaro, S.L. (author), Bouchaud, G. (author), Costa, A. (author), Denery-Papini, S. (author), Diaz-Perales, A. (author), Garrido-Arandia, M. (author), Gavrovic-Jankulovic, M. (author), Hayen, S. (author), Martinez-Blanco, M. (author), Molina, E. (author), Monaci, L. (author), Pieters, R.H.H. (author), Villemin, C. (author), Wichers, H.J. (author), Wroblewska, B. (author), Willemsen, L.E.M. (author), Roggen, E.L. (author), van Bilsen, J.H.M. (author)
Background: Before introducing proteins from new or alternative dietary sources into the market, a compressive risk assessment including food allergic sensitization should be carried out in order to ensure their safety. We have recently proposed the adverse outcome pathway (AOP) concept to structure the current mechanistic understanding of the...
article 2019
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de Jong, G.A.H. (author), Jayasena, S. (author), Johnson, P. (author), Marsh, J. (author), Apostolovic, D. (author), van Hage, M. (author), Nordlee, J. (author), Baumert, J. (author), Taylor, S.L. (author), Roucairol, C. (author), de Jongh, H. (author), Koppelman, S.J. (author)
The 2S albumin Ara h 6 is one of the most important peanut allergens. A post-translationally cleaved Ara h 6 (pAra h 6) was purified from Virginia type peanuts, and the cleavage site was mapped using high-resolution mass spectrometry. Compared to intact Ara h 6, pAra h 6 lacks a 5-amino acid stretch, resembling amino acids 43-47 (UniProt...
article 2018
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Remington, B. (author), Broekman, H.C.H. (author), Blom, W.M. (author), Capt, A. (author), Crevel, R.W.R. (author), Dimitrov, I. (author), Faeste, C.K. (author), Fernandez-Canton, R. (author), Giavi, S. (author), Houben, G.F. (author), Glenn, K.C. (author), Madsen, C.B. (author), Kruizinga, A.K. (author), Constable, A. (author)
The development and introduction of new dietary protein sources has the potential to improve food supply sustainability. Understanding the potential allergenicity of these new or modified proteins is crucial to ensure protection of public health. Exposure to new proteins may result in de novo sensitization, with or without clinical allergy, or...
article 2018
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Koppelman, S.J. (author), Jayasena, S. (author), Luykx, D. (author), Schepens, E. (author), Apostolovic, D. (author), de Jong, G.A.H. (author), Isleib, T.G. (author), Nordlee, J. (author), Baumert, J. (author), Taylor, S.L. (author), Cheng, H. (author), Maleki, S. (author)
Four different market classes of peanut (Runner, Virginia Spanish, and Valencia) are commonly consumed in Western countries, but for some consumers peanuts are a main cause of food-induced anaphylaxis. Limited information is available on the comparative allergenicity of these distinct market classes. The aim of this study was to compare...
article 2016
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Verhoeckx, K.C.M. (author), Vissers, Y.M. (author), Baumert, J.L. (author), Faludi, R. (author), Feys, M. (author), Flanagan, S. (author), Herouet-Guicheney, C. (author), Holzhauser, T. (author), Shimojo, R. (author), van der Bolt, N. (author), Wichers, H. (author), Kimber, I. (author)
Food processing can have many beneficial effects. However, processing may also alter the allergenic properties of food proteins. A wide variety of processing methods is available and their use depends largely on the food to be processed. In this review the impact of processing (heat and non-heat treatment) on the allergenic potential of proteins...
article 2015
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Masthoff, L.J. (author), Hoff, R. (author), Verhoeckx, K.C.M. (author), van Os-Medendorp, H. (author), Michelsen-Huisman, A. (author), Baumert, J.L. (author), Pasmans, S.G. (author), Meijer, Y. (author), Knulst, A.C. (author)
Background Allergenicity of foods can be influenced by processing. Tree nuts are an important source of nutrition and increasingly consumed; however, processing methods are quite variable and data are currently lacking on the effects of processing on allergenicity. Objective To perform a systematic literature review on the effects of food...
article 2013
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Ladics, G.S. (author), van Bilsen, J.H.M. (author), Brouwer, H.M.H. (author), Vogel, L. (author), Vieths, S. (author), Knippels, L.M.J. (author), TNO Kwaliteit van Leven (author), KvL (author)
Specific IgE sera screening studies are employed to investigate protein cross-reactivity. Such nonfunctional immunochemical methods cannot measure the biological activity of proteins. Therefore, an assay using RBL cells transfected with human FcεRI was developed. Our objective was to evaluate the degranulation of three cell-lines expressing...
article 2008
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van Boxtel, E.L. (author), Koppelman, S.J. (author), van den Broek, L.A.M. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author), KvL (author)
This study was aimed at the determination of the pepsin-susceptible and pepsin-resistant epitopes in native and heat-treated Ara h 1, a major allergen from peanuts. Both the oligomeric structure and the trimeric structure of the allergen were investigated. Under the in vitro conditions applied, oligomeric Ara h 1, either unheated or preheated,...
article 2008
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Peeters, K.A.B.M. (author), Nordlee, J.A. (author), Penninks, A.H. (author), Chen, L. (author), Goodman, R.E. (author), Bruijnzeel-Koomen, C.A.F.M. (author), Hefle, S.L. (author), Taylor, S.L. (author), Knulst, A.C. (author), TNO Kwaliteit van Leven (author)
Background: Reports of lupine allergy are increasing as its use in food products increases. Lupine allergy might be the consequence of cross-reactivity after sensitization to peanut or other legumes or de novo sensitization. Lupine allergens have not been completely characterized. Objectives: We sought to identify allergens associated with...
article 2007
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Flinterman, A.E. (author), van Hoffen, E. (author), den Hartog Jager, C.F. (author), Koppelman, S. (author), Pasmans, S.G. (author), Hoekstra, M.O. (author), Bruijnzeel-Koomen, C.A. (author), Knulst, A.C. (author), Knol, E.F. (author), TNO Kwaliteit van Leven (author)
Background: In peanut-allergic adults, IgE is mainly directed to Ara h1 and Ara h2. More recently, a role for Ara h6 has been suggested. In contrast to adults, IgE in children can fluctuate over time. Therefore, children may have a more dynamic reactivity to peanut. Objective: To examine the IgE reactivity to major peanut allergens in peanut...
article 2007
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Peeters, K.A.B.M. (author), Koppelman, S.J. (author), van Hoffen, E. (author), van der Tas, C.W.H. (author), den Hartog Jager, C.F. (author), Penninks, A.H. (author), Hefle, S.L. (author), Bruijnzeel-Koomen, C.A.F.M. (author), Knol, E.F. (author), Knulst, A.C. (author), TNO Kwaliteit van Leven (author)
Background: Recognition of specific peanut allergens or the diversity of IgE binding to peanut allergens may play a role in the elicitation of severe allergic reactions. Objective: To investigate whether sensitization to individual allergens Ara h 1, Ara h 2, Ara h 3 and Ara h 6 is correlated with clinical severity. Methods: The reactivity of...
article 2007
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Portengen, L. (author), Preller, L. (author), Tielen, M. (author), Doekes, G. (author), Heederik, D. (author), TNO Kwaliteit van Leven (author)
Background: Recent studies have reported a low prevalence of atopic sensitization and respiratory allergy in children growing up on farms. Objectives: We sought to evaluate the dose-response relationship between endotoxin and atopic sensitization in adult farmers and to assess the effect on respiratory health outcomes. Methods: Data on endotoxin...
article 2005
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Koppelman, S.J. (author), de Jong, G.A.H. (author), de Laaper-Ertmann, M. (author), Peeters, K.A.B.M. (author), Knulst, A.C. (author), Hefle, S.L. (author), Knol, E.F. (author), TNO Kwaliteit van Leven (author)
Background: IgE-binding peanut proteins smaller than 15 kDa were previously identified as potential allergens in the majority of our peanut allergic population. Objective: To characterize the novel allergen in order to determine whether it was similar to one of the thus far identified recombinant peanut allergens (Ara h 1-7). Methods: An IgE...
article 2005
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Koppelman, S.J. (author), Knol, E.F. (author), Vlooswijk, R.A.A. (author), Wensing, M. (author), Knulst, A.C. (author), Hefle, S.L. (author), Gruppen, H. (author), Piersma, S. (author)
Background: Peanut allergen Ara h 3 has been the subject of investigation for the last few years. The reported data strongly depend on recombinant Ara h 3, since a purification protocol for Ara h 3 from peanuts was not available. Methods: Peanut allergen Ara h 3 (glycinin), was purified and its posttranslational processing was investigated. Its...
article 2003
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Knippels, L.M.J. (author), Penninks, A.H. (author), TNO Voeding (author)
The need for widely accepted and validated animal models to test the potential allergenicity and potency of novel (biotechnology-derived) proteins has become an important issue for their safety evaluation.In this article, we summarize the results of the development of an oral sensitization protocol for food proteins in the rat. Young Brown...
article 2003
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Kimber, I. (author), Dearman, R.J. (author), Penninks, A.H. (author), Knipples, L.M.J. (author), Buchanan, R.B. (author), Hammerberg, B. (author), Jackson, H.A. (author), Helm, R.M. (author)
Because of the public concern surrounding the issue of the safety of genetically modified organisms, it is critical to have appropriate methodologies to aid investigators in identifying potential hazards associated with consumption of foods produced with these materials. A regent panel of experts convened by the Food and Agriculture Organization...
article 2003
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Koppelman, S.J. (author), Vlooswijk, R.A.A. (author), Knippels, L.M.J. (author), Hessing, M. (author), Knol, E.F. (author), van Reijsen, F.C. (author), Bruijnzeel-Koomen, C.A.F.M. (author)
Background: The serology of peanut allergy seems to be different in various parts of the world. We analyzed the composition of 13 samples of three varieties of peanut in order to compare their allergenic nature. Methods: Peanut cultivars that are commonly processed in the West were analyzed for protein content, protein composition, and Ara h 1...
article 2001
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Knippels, L.M.J. (author), van der Kleij, H.P.M. (author), Koppelman, S.J. (author), Houben, G.F. (author), Penninks, A.H. (author), Felius, A.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Background: No adequate enteral sensitization models are available to study food allergy and the allergenicity of food proteins. To further validate an enteral brown Norway (BN) rat sensitization model under development, we studied specific protein recognition to determine whether a comparable pattern of proteins is recognized by the rat immune...
article 2000
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TNO Prins Maurits Laboratorium, Department of Pharmacology (author), Langeveld-Wildschut, E.G. (author), Bruijnzeel, P.L.B. (author), Mudde, G.C. (author), Versluis, C. (author), van Dijk-van Ieperen, A.G. (author), Bihari, I.C. (author), Knol, E.F. (author), Thepen, T. (author), Bruijnzeel-Koomen, C.A.F.M. (author), van Reijsen, F.C. (author)
article 2000
Searched for: subject%3A%22IgE%22
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