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Mariman, R. (author), Kremer, S.H.A. (author), Koning, F. (author), Nagelkerken, L. (author)Probiotic bacteria express a wide range of molecular structures that bind to receptors on innate immune cells and mediate health-promoting effects in the host. We have recently demonstrated in a colitis model that favourable effects of the probiotic mixture VSL#3 may in part be due to the suppression of intestinal chemokine expression. To obtain...article 2014
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van Riet, E. (author), Everts, B. (author), Retra, K. (author), Phylipsen, M. (author), van Hellemond, J.J. (author), Tielens, A.G.M. (author), van der Kleij, D. (author), Hartgers, F.C. (author), Yazdanbakhsh, M. (author), TNO Defensie en Veiligheid (author)Background: Recognition of pathogens by dendritic cells (DCs) through interaction with pattern recognition receptors, including Toll like receptors (TLR), is crucial for the initiation of appropriate polarized T helper (Th) cell responses. Yet, the characteristics and differences in molecular profiles of DCs with different T cell polarizing...article 2009
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Lindeman, J.H.N. (author), Abdul-Hussien, H. (author), Schaapherder, A.F.M. (author), van Bockel, J.H. (author), von der Thüsen, J.H. (author), Roelen, D.L. (author), Kleemann, R. (author)Inflammation plays a key role in the pathogenesis of an AAA (abdominal aortic aneurysm); however, the nature of the inflammatory factors and cellular response(s) involved in AAA growth is controversial. In the present study, we set out to determine the aortic levels of inflammatory cytokines in relation to downstream inflammatory transcription...article 2008
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de Jonge, J.D. (author), Ezendam, J. (author), Knippels, L.M.J. (author), Penninks, A.H. (author), Pieters, R. (author), van Loveren, H. (author), TNO Kwaliteit van Leven (author)Probiotics are claimed to beneficially affect the immune system and their involvement in allergy prevention is being investigated extensively. However, the efficacy of probiotics in allergy prevention remains controversial. We investigated whether the probiotic Lactobacillus casei Shirota (LcS) could modulate the food allergic response against...article 2008
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Kuper, C.F. (author), Stierum, R.H. (author), Boorsma, A. (author), Schijf, M.A. (author), Prinsen, M. (author), Bruijntjes, J.P. (author), Bloksma, N. (author), Arts, J.H.E. (author), TNO Kwaliteit van Leven (author)All LMW respiratory allergens known to date can also induce skin allergy in test animals. The question here was if in turn skin allergens can induce allergy in the respiratory tract. Respiratory allergy was tested in Th2-prone Brown Norway (BN) rats by dermal sensitization with the contact allergen dinitrochlorobenzene (DNCB; 1%, day 0; 0.5%,...article 2008
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de Jonge, J.D. (author), Knippels, L.M.J. (author), Ezendam, J. (author), Odink, J. (author), Penninks, A.H. (author), van Loveren, H. (author), TNO Kwaliteit van Leven (author)This report describes the further development of a peanut allergy model in Brown Norway (BN) rats and in particular the importance of allergen-free breeding of the laboratory animals for the allergen to be used. For this purpose BN rats were bred for 3 generations on soy- and peanut-free feed since it is known that the legumes peanut and soy are...article 2007
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de Jonge, J.D. (author), Ezendam, J. (author), Knippels, L.M.J. (author), Odink, J. (author), Pourier, M.S. (author), Penninks, A.H. (author), Pieters, R. (author), van Loveren, H. (author), TNO Kwaliteit van Leven (author)Other factors than the allergen itself may be of importance in the development of food allergy. This report describes the influence of the immunosuppressive compound bis(tributyltin)oxide (TBTO), present in the food chain, on the development of food allergy to peanut or ovalbumin in Brown Norway (BN) rats. To study these effects BN rats were...article 2007
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Hartgers, F.C. (author), Smits, H.H. (author), van der Kleij, D. (author), Yazdanbakhsh, M. (author), TNO Defensie en Veiligheid (author)Helminth infections have profound effects on the immune system. Here, recent insights in the molecular interactions between schistosomes and the host are described with respect to adaptive but also with respect to innate immune responses. Furthermore, the different mechanisms of immune hyporesponsiveness are depicted with emphasis on regulatory...article 2006
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van Wijk, F. (author), Hoeks, S. (author), Nierkens, S. (author), Koppelman, S.J. (author), van Kooten, P. (author), Boon, L. (author), Knippels, L.M.J. (author), Pieters, R. (author), TNO Kwaliteit van Leven (author)Although food allergy has emerged as a major health problem, the mechanisms that are decisive in the development of sensitization to dietary Ag remain largely unknown. CTLA-4 signaling negatively regulates immune activation, and may play a crucial role in preventing induction and/or progression of sensitization to food Ag. To elucidate the role...article 2005
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Knippels, L.M.J. (author), van Wijk, F. (author), Penninks, A.H. (author), TNO Voeding (author)Purpose of review This review summarizes selected articles on animal models of food allergy published in 2003. The research areas that are covered include mechanistic studies, the search for new therapies, as well as screening models for hazard identification of potential allergens. Recent findings Novel treatment options of both prevention and...article 2004
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'T Hart, B.A. (author), Vogels, J. (author), Bauer, J. (author), Brok, H.P.M. (author), Blezer, E. (author), TNO Voeding (author)Early recognition of whether a product has potential as a new therapy for treating multiple sclerosis (MS) relies upon the quality of the animal models used in the preclinical trials. The promising effects of new treatments in rodent models of experimental autoimmune encephalomyelitis (EAE) have rarely been reproduced in patients suffering from...article 2004
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van Wijk, F. (author), Hartgring, S. (author), Koppelman, S.J. (author), Pieters, R. (author), Knippels, L.M.J. (author), TNO Voeding (author)Background: Peanut allergy is known for its severity and persistence through life. Several peanut proteins have been identified as allergenic and are indicated as Ara h 1-7. Very little is known about the mechanisms that underlie sensitization to peanut proteins. Objective: The purpose of the present study was to reveal the immune responses that...article 2004
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Bellou, A. (author), Saint-Laudy, J. (author), Knippels, L. (author), Montémont, C. (author), Vauthier, E. (author), Gerard, P. (author), Pellegrom, H. (author), Koerkamp, E.K. (author), Lesesve, J.F. (author), Guéant, J.L. (author), Lambert, H. (author), Mallié, J.P. (author), TNO Voeding (author)Anaphylactic shock is an immunoglobulin E (IgE)-dependent hypersensitivity. Biological tests like leucocyte histamine release (LHR) and human basophil activation (HBA), frequently used in human allergy, reflect both the amount of IgE fixed on cells and the cellular reactivity. To assess whether serum-specific IgE from Brown Norway (BN) rats...article 2003
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Gaubius Instituut TNO (author), Bayley, J.P. (author), van Rietschoten, J.G.I. (author), Bakker, A.M. (author), van Baarsen, L. (author), Kaijzel, E.L. (author), Wierenga, E.A. (author), van der pouw Kraan, T.C.T.M. (author), Huizinga, T.W.J. (author), Verweij, C.L. (author)A number of reports have described the monoallelic expression of murine cytokine genes. Here we describe the monoallelic expression of the human IL-1? gene in CD4+ T cells. Analysis of peripheral blood T cell clones derived from healthy individuals revealed that the IL-1? gene shows predominantly monoallelic expression. Monoallelic expression...article 2003
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Kruisselbrink, A. (author), Heijne Den Bak-Glashouwer, M.J. (author), Havenith, C.E.G. (author), Thole, J.E.R. (author), Janssen, R. (author)Recent evidence suggests that chronic exposure to lactobacilli, which are part of the normal intestinal flora, inhibits the development of allergic disorders. Allergy is mediated by Th2 cells, which produce high levels of IL4 and IL5, and suppressive effects of lactic acid bacteria on the development of allergy have been attributed to their Th1...article 2001
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TNO Preventie en Gezondheid (author), Janssen, R. (author), Kruisselbrink, A. (author), Hoogteijling, L. (author), Lamb, J.R. (author), Young, D.B. (author), Thole, J.E.R. (author)The potential for development of mycobacteria as T helper type 1 (Th1) vaccines capable of induction of Th1 responses to recombinant antigens was explored in a model system based on an immunodominant peptide from house dust mite. Different recombinant mycobacterial preparations were compared for their ability to induce a Th1 response to the...article 2001
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Visser, J.T.J. (author), de Kloet, E. (author), Nagelkerken, L. (author), TNO Preventie en Gezondheid (author)It is increasingly recognized that glucocortiocoids (GCs) can have subtle modulatory effects in immunoregulation rather than having generalized immunosuppressive effects. GCs suppress Th1 cells and cellular immunity, but may favor Th2 responses and humoral immunity. The chronic fatigue syndrome (CFS) appears to be associated with a disturbed HPA...article 2000
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Maassen, C.B.M. (author), van Holten-Neelen, C. (author), Balk, F. (author), den Bak-Glashouwer, M.-J.H. (author), Leer, R.J. (author), Laman, J.D. (author), Boersma, W.J.A. (author), Claassen, E. (author)Different Lactobacillus strains are frequently used in consumer food products. In addition, recombinant lactobacilli which contain novel expression vectors can now be used in immunotherapeutic applications such as oral vaccination strategies and in T cell tolerance induction approaches for autoimmune disease. Both for food and clinical...article 2000
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Luca, M.E. (author), Visser, L. (author), Lucas, C.J. (author), Nagelkerken, L. (author), TNO Preventie en Gezondheid (author)In this study, mouse recombinant IFN-β was shown to favor PLP139-151-specific Th2 responses in vitro, by inhibiting IFN-γ production and stimulating IL-4 and IL-10 production. IFN-β (5000 U/day) failed to prevent the development or severity of EAE induced with PLP139-151. Whereas efficacy of IL-10 was found in the B. pertussis assisted but not...article 1999
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Visser, J. (author), van Boxel-Dezaire, A. (author), Methorst, D. (author), Brunt, T. (author), de Kloet, E.R. (author), Nagelkerken, L. (author), TNO Preventie en Gezondheid (author)Antigen-presenting cells are thought to modulate the development of Th1 and Th2 cells by the secretion of interleukin-10 (IL-10) and IL-12. Because glucocorticoids (GC) favor the development of Th2 responses, we determined whether dexamethasone (DEX) and hydrocortisone (HC) have differential effects on lipopolysaccharide-induced IL-10 and IL-12...article 1998
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