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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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Nagelkerken, L. (author), Haspels, I. (author), van Rijs, W. (author), Blauw, B. (author), Ferrant, J.L. (author), Hess, D.M. (author), Garber, E.A. (author), Taylor, F.R. (author), Burkly, L.C. (author), Gaubius Instituut TNO (author)It has been demonstrated that anti-CD154 mAb treatment effectively inhibits the development of experimental autoimmune encephalomyelitis (EAE). However, although it appears to prevent the induction of Th1 cells and reactivation of encephalitogenic T cells within the CNS, little information is available regarding the involvement of alternative...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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Spaenij-Dekking, E.H.A. (author), Kooy-Winkelaar, E.M.C. (author), Nieuwenhuizen, W.F. (author), Drijfhout, J.W. (author), Koning, F. (author), TNO Voeding (author)Background: It is now generally accepted that coeliac disease (CD) is caused by inflammatory T cell responses to gluten peptides bound to HLA-DQ2 or -DQ8 molecules. There is overwhelming evidence that CD patients can mount T cell responses to peptides found in both α-gliadin and γ-gliadin molecules. Assays that would detect the presence or...article 2004
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Verbeek, R. (author), Plomp, A.C. (author), van Tol, E.A.F. (author), van Noort, J.M. (author)Plant-derived flavonoids are inhibitors of various intracellular processes, notably phosphorylation pathways, and potential inhibitors of cellular autoimmunity. In this study, the inhibiting effects of various flavonoids on antigen-specific proliferation and interferon-gamma (IFN-γ) production by human and murine autoreactive T cells were...article 2004
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O'Connor, D.H. (author), Mothe, B.R. (author), Weinfurter, J.T. (author), Fuenger, S. (author), Rehrauer, W.M. (author), Jing, P. (author), Rudersdorf, R.R. (author), Liebl, M.E. (author), Krebs, K. (author), Vasquez, J. (author), Dodds, E. (author), Loffredo, J. (author), Martin, S. (author), McDermott, A.B. (author), Allen, T.M. (author), Wang, C. (author), Doxiadis, G.G. (author), Montefiori, D.C. (author), Hughes, A. (author), Burton, D.R. (author), Allison, D.B. (author), Wolinsky, S.M. (author), Bontrop, R. (author), Picker, L.J. (author), Watkins, D.I. (author)Certain major histocompatibility complex class I (MHC-I) alleles are associated with delayed disease progression in individuals infected with human immunodeficiency virus (HIV) and in macaques infected with simian immunodeficiency virus (SIV). However, little is known about the influence of these MHC alleles on acute-phase cellular immune...article 2003
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TNO Preventie en Gezondheid (author), Bayley, J.P. (author), Bakker, A.M. (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)The occurrence of monoallelic expression of cytokine genes in single cells has been convincingly demonstrated, but there have been few reports of this phenomenon in T cell clones. Here we describe studies on the expression of alleles of the human genes encoding IL-2, IL-3, IL-4, and IL-13 in human CD4+ T cell clones. In contrast to the results...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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TNO Preventie en Gezondheid (author), Starckx, S. (author), van den Steen, P.E. (author), Verbeek, R. (author), van Noort, J.M. (author), Opdenakker, G. (author)The small heat shock protein αB-crystallin is considered as a candidate autoantigen in multiple sclerosis (MS) lesions. Gelatinase B or matrix metalloproteinase (MMP)-9 is a proteinase establishing various disease-promoting feedback loops in autoimmune diseases. Human αB-crystallin was digested with natural gelatinase B and all cleavage sites...article 2003
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TNO Preventie en Gezondheid (author), Richters, C.D. (author), Mayen, I. (author), Havenith, C.E.G. (author), Beelen, R.H.J. (author), Kamperdijk, E.W.A. (author)Dendritic cells (DC) are the most potent antigen-presenting cells and are therefore useful to induce immune responses against tumor cells in patients. DC can be generated in vitro from monocytes using GM-CSF and IL-4, the so-called monocyte-derived DC (MoDC). To achieve antitumor responses, MoDC must be able to migrate to the draining lymph...article 2002
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Centraal Instituut voor Voedingsonderzoek TNO (author), Gennari, A. (author), Bol, M. (author), Seinen, W. (author), Penninks, A. (author), Pieters, R. (author)The organotin compounds di-n-butyltin dichloride (DBTC) and tri-n-butyltin chloride (TBTC) induce thymus atrophy in rats. At low doses they inhibit immature thymocyte proliferation, whereas at higher doses in particular TBTC induces apoptotic cell death. In vitro, a similar concentration-effect relationship was observed, i.e. low concentrations...article 2002
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TNO Preventie en Gezondheid (author), Visser, J. (author), Nagelkerken, L. (author)Chemicals/CAS: Dexamethasone, 50-02-2; Receptors, Interleukin; Receptors, Interleukin-10.article 2002
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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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Centraal Instituut voor Voedingsonderzoek TNO (author), Spreeuwenberg, M.A.M. (author), Verdonk, J.M.A.J. (author), Gaskins, H.R. (author), Verstegen, M.W.A. (author)Compromising alterations in gastrointestinal architecture are common during the weaning transition of pigs. The relation between villous atrophy and epithelial barrier function at weaning is not well understood. This study evaluated in vitro transepithelial transport by Ussing metabolic chambers, local alterations in T-cell subsets and villous...article 2001
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van Vlijmen, B.J.M. (author), Gerritsen, G. (author), Franken, A.L. (author), Boesten, L.S.M. (author), Kockx, M.M. (author), Gijbels, M.J. (author), Vierboom, M.P. (author), van Eck, M. (author), van de Water, B. (author), van Berkel, T.J.C. (author), Havekes, L.M. (author), Gaubius Instituut TNO (author)Cell proliferation and cell death (either necrosis or apoptosis) are key processes in the progression of atherosclerosis. The tumor suppressor gene p53 is an essential gene in cell proliferation and cell death and is upregulated in human atherosclerotic plaques, both in smooth muscle cells and in macrophages. In the present study, we...article 2001
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TNO Kwaliteit van Leven TNO BIBRA (author), Becker, R. (author), Nikolova, T. (author), Wolff, I. (author), Lovell, D. (author), Hüttner, E. (author), Foth, H. (author)The mutant frequency (MF) in the hypoxanthine-guanine-phosphoribosyl-transferase (HPRT) locus of peripheral blood T-lymphocytes was measured in a population environmentally exposed to vinyl chloride - a toxic and carcinogenic substance through an accidental release into the atmosphere. It was compared to MF in a control group of unexposed...article 2001
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Thoua, N.-M. (author), van Noort, J.M. (author), Baker, D. (author), Bose, A. (author), van Sechel, A.C. (author), van Stipdonk, M.J.B. (author), Travers, P.J. (author), Amor, S. (author), TNO Preventie en Gezondheid (author)The stress protein αB-crystallin is an immunodominant antigen in multiple sclerosis (MS)-affected myelin for human T cells and is expressed at elevated levels in MS lesions. Using bovine αB-crystallin and synthetic peptides based on mouse αB-crystallin the ability of this stress protein to induce experimental allergic encephalomyelitis (EAE) was...article 2000
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Bajramović, J.J. (author), Plomp, A.C. (author), van der Goes, A. (author), Koevoets, C. (author), Newcombe, J. (author), Cuzner, M.L. (author), van Noort, J.M. (author)In the development of multiple sclerosis (MS), (re)activation of infiltrating T cells by myelin-derived Ags is considered to be a crucial step. Previously, αB-crystallin has been shown to be an important myelin Ag to human T cells. Since αB-crystallin is an intracellular heat shock protein, the question arises at what stage, if any, during...article 2000