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The circadian clock, shift work, and tissue-specific insulin resistance

Oosterman, J.E. (author), Wopereis, S. (author), Kalsbeek, A. (author)

Obesity and type 2 diabetes (T2D) have become a global health concern. The prevalence of obesity and T2D is significantly higher in shift workers compared to people working regular hours. An accepted hypothesis is that the increased risk for metabolic health problems arises from aberrantly timed eating behavior, that is, eating out of synchrony...

article 2020

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Specific IgE to Jug r 1 has no additional value compared with extract-based testing in diagnosing walnut allergy in adults

TNO Kwaliteit van Leven (author), Blankestijn, M.A. (author), Blom, W.M. (author), Otten, H.G. (author), Baumert, J.L. (author), Taylor, S.L. (author), Bruijnzeel-Koomen, C.A.F.M. (author), Houben, G.F. (author), Knulst, A.C. (author), Klemans, R.J.B. (author)

Chemicals / CAS immunoglobulin E, 37341-29-0; Allergens; Immunoglobulin E; Plant Extracts; Plant Proteins

article 2017

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Drugs that reverse disease transcriptomic signatures are more effective in a mouse model of dyslipidemia

Wagner, A. (author), Cohen, N. (author), Kelder, T. (author), Amit, U. (author), Liebman, E. (author), Steinberg, D.M. (author), Radonjic, M. (author), Ruppin, E. (author)

High-throughput omics have proven invaluable in studying human disease, and yet day-to-day clinical practice still relies on physiological, non-omic markers. The metabolic syndrome, for example, is diagnosed and monitored by blood and urine indices such as blood cholesterol levels. Nevertheless, the association between the molecular and the...

article 2015

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Clinical relevance of sensitization to lupine in peanut-sensitized adults

Peeters, K.A.B.M. (author), Koppelman, S.J. (author), Penninks, A.H. (author), Lebens, A. (author), Bruijnzeel-Koomen, C.A.F.M. (author), Hefle, S.L. (author), Taylor, S.L. (author), van Hoffen, E. (author), Knulst, A.C. (author), TNO Kwaliteit van Leven (author)

Background: The use of lupine in food has been increasing during the last decade and allergic reactions to lupine have been reported, especially in peanut-allergic patients. The frequency and the degree of cross-reactivity to other legumes are not known. The aim of the study was to investigate the frequency of sensitization to lupine, and in...

article 2009

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Children with peanut allergy recognize predominantly Ara h2 and Ara h6, which remains stable over time

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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Intragastric immunization with recombinant Lactobacillus casei expressing flagellar antigen confers antibody-independent protective immunity against Salmonella enterica serovar Enteritidis

Kajikawa, A. (author), Satoh, E. (author), Leer, R.J. (author), Yamamoto, S. (author), Igimi, S. (author), TNO Kwaliteit van Leven (author)

A recombinant Lactobacillus casei expressing a flagellar antigen from Salmonella enterica serovar Enteritidis was constructed and evaluated as a mucosal vaccine. Intragastric immunization of the recombinant strain conferred protective immunity against Salmonella infection in mice. This immunization did not result in antigen-specific antibody in...

article 2007

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Autoantibodies against alpha B-crystallin, a candidate autoantigen in multiple sclerosis, are part of a normal human immune repertoire

van Noort, J.M. (author), Verbeek, R. (author), Meilof, J.F. (author), Polman, C.H. (author), Amor, S. (author), TNO Kwaliteit van Leven (author)

Human T-cell responses to the stress protein alpha B-crystallin in multiple sclerosis (MS)-affected brain samples are dominant when compared to other myelin antigens. The establishment of the apparent autoimmune repertoire against this antigen has been suggested to involve cross-priming during viral infection. Yet, another possibility would be...

article 2006

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Purification and immunoglobulin E-binding properties of peanut allergen Ara h 6: Evidence for cross-reactivity with Ara h 2

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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Relevance of Ara h1, Ara h2 and Ara h3 in peanut-allergic patients, as determined by immunoglobulin E Western blotting, basophil-histamine release and intracutaneous testing: Ara h2 is the most important peanut allergen

Koppelman, S.J. (author), Wensing, M. (author), Ertmann, M. (author), Knulst, A.C. (author), Knol, E.F. (author), TNO Voeding (author)

Background: A number of allergenic proteins in peanut has been described and the relative importance of these allergens is yet to be determined. Objectives: We have investigated the relevance of previously identified peanut allergens in well-characterized peanut-allergic patients by in vitro, ex vivo and in vivo assays. Methods: Thirty-two adult...

article 2004

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Brown Norway rat ovalbumin-specific immunoglobulin E antibodies increase the human basophil expression of CD63 marker

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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Immunochemical detection of sulfur mustard adducts with keratins in the stratum corneum of human skin

van der Schans, G.P. (author), Noort, D. (author), Mars-Groenendijk, R.H. (author), Fidder, A. (author), Chau, L.F. (author), de Jong, L.P.A. (author), Benschop, H.P. (author), Prins Maurits Laboratorium TNO (author)

As part of a program to develop methods for diagnosis of exposure to chemical warfare agents, we developed immunochemical methods for detection of adducts of sulfur mustard to keratin in human skin. Three partial sequences of keratins containing glutamine or asparagine adducted with a 2-hydroxyethylthioethyl group at the ω-amide function were...

article 2002

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Prophylactic and therapeutic effects of a humanized monoclonal antibody against the IL-2 receptor (DACLIZUMAB) on collagen-induced arthritis (CIA) in rhesus monkeys

Brok, H.P.M. (author), Tekoppele, J.M. (author), Hakimi, J. (author), Kerwin, J.A. (author), Nijenhuist, E.M. (author), de Groot, C.W. (author), Bontrop, R.E. (author), Hart 't, B.A. (author), Gaubius Instituut (author)

CIA in the rhesus monkey is an autoimmune-based polyarthritis with inflammation and erosion of synovial joints that shares various features with human rheumatoid arthritis (RA). The close phylogenetic relationship between man and rhesus monkey makes the model very suitable for preclinical safety and efficacy testing of new therapeutics with...

article 2001

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Cisplatin-DNA adduct formation in rat spermatozoa and its effect on fetal development

Hooser, S.T. (author), van Dijk-Knijnenburg, C.M. (author), Waalkens-Berendsen, I.D.H. (author), Smits-van Prooije, A.E. (author), Snoeij, N.J. (author), Baan, R.A. (author), Fichtinger-Schepman, M.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

Exposure of males to some genotoxic chemicals causes DNA damage in spermatozoa resulting in embryotoxicity and developmental defects in their offspring. This study demonstrates that cisplatin-DNA adducts could be measured in spermatozoa following treatment with the antineoplastic drug, cisplatin. The formation of spermatozoa cisplatin-DNA...

article 2000

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Comparison of antibody responses to hen's egg and cow's milk proteins in orally sensitized rats and food-allergic patients

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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Recognition properties of V3-specific antibodies to V3 loop peptides derived from HIV-1 gp120 presented in multiple conformations

TNO Preventie en Gezondheid (author), Huisman, J.G. (author), Carotenuto, A. (author), Labrijn, A.F. (author), Papavoine, C.H.M. (author), Laman, J.D. (author), Schellekens, M.M. (author), Koppelman, M.H.G.M. (author), Hilbers, C.W. (author)

To identify structural constraints and amino acid sequences important for antibody recognition of the third variable domain (V3) of HIV-1 gp120, we have studied the solution conformation of three 35-mer circular V3 loop peptides derived from HIV-1 strains which differ in syncytium- (SI) and non-syncytium-inducing (NSI) capacity. In addition to...

article 2000

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Predominant recognition of species-specific determinants of the GroES homologues from Mycobacterium leprae and M. tuberculosis

Chua-Intra, B. (author), Ivanyi, J. (author), Hills, A. (author), Thole, J. (author), Moreno, C. (author), Vordermeier, H.M. (author), TNO Preventie en Gezondheid (author)

The Mycobacterium leprae and M. tuberculosis 10000 MW heat-shock protein homologues of GroES have previously been identified as major immunogens for human T cells. We used synthetic peptides to characterize the determinants recognized by murine T cells. The findings suggest that, despite 90% sequence identity between these two proteins, T cells...

article 1998

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A novel and simple immunocapture assay for determination of gelatinase-B (MMP-9) activities in biological fluids: Saliva from patients with Sjögren's syndrome contain increased latent and active gelatinase-B levels

Hanemaaijer, R. (author), Visser, H. (author), Konttinen, Y.T. (author), Koolwijk, P. (author), Verheijen, J.H. (author), Gaubius Instituut TNO (author)

Here we describe a new principle for accessing the activity of the different members of the human matrix-metalloproteinases (MMPs) by a colorimetric assay. Using protein engineering, a modified pro-urokinase was made in which the activation sequence, normally recognized by plasmin (ProArgPheLys ↓ IlelleGlyGly), was replaced by a sequence that is...

article 1998

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Analysis of the role of the gene bipA, encoding the major endoplasmic reticulum chaperone protein in the secretion of homologous and heterologous proteins in black Aspergilli

Punt, P.J. (author), van Gemeren, I.A. (author), Drint-Kuijvenhoven, J. (author), Hessing, J.G.M. (author), Muijlwijk van - Harteveld, G.M. (author), Beijersbergen, A. (author), Verrips, C.T. (author), van den Hondel, C.A.M.J.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

The function of the endoplasmic-reticulum-localized chaperone binding protein (BiP) in relation to protein secretion in filamentous fungi was studied. It was shown that the overproduction of several homologous and heterologous recombinant proteins by Aspergillus strains induces the expression of bipA, the BiP-encoding gene from Aspergillus niger...

article 1998

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Identification and partial characterization of multiple major allergens in peanut proteins

de Jong, E.C. (author), van Zijverden, M. (author), Spanhaak, S. (author), Koppelman, S.J. (author), Pellegrom, H. (author), Penninks, A.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

Background: Peanuts are a major cause of food allergies both in children as in adults which can induce an anaphylactic shock. The identification and characterization of peanut allergens could lead to more insight into the mechanism and contribute to the improvement of diagnostic tests and treatment for peanut allergy. Objectives: In the present...

article 1998

document

Immune responses and side effects of five different oil-based adjuvants in mice

Leenaars, M. (author), Koedam, M.A. (author), Hendriksen, C.F.M. (author), Claassen, E. (author), TNO Preventie en Gezondheid (author)

In this study, five different oil based adjuvants were compared to assess efficacy and side effects. Mice were injected subcutaneously (s.c.) or intraperitoneally (i.p.) with a weak immunogen (synthetic peptide) emulsified in Freund's adjuvant (FA), Specol, RIBI, TiterMax or Montanide ISA50. Efficacy of adjuvants was evaluated based on their...

article 1998