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Fragki, S.S. (author), Dirven, H. (author), Fletcher, T. (author), Grasl-Kraupp, B. (author), Guetzkow, K.B. (author), Hoogenboom, R. (author), Kersten, S. (author), Lindeman, B. (author), Louisse, J. (author), Peijnenburg, A. (author), Aldert H., (author), Piersma, A.H. (author), Princen, H.M.G. (author), Uhl, M. (author), Westerhout, J. (author), Zeilmaker, M.J. (author), Luijten, M. (author)Associations between per- and polyfluoroalkyl substances (PFASs) and increased blood lipids have been repeatedly observed in humans, but a causal relation has been debated. Rodent studies show reverse effects, i.e. decreased blood cholesterol and triglycerides, occurring however at PFAS serum levels at least 100-fold higher than those in humans....article 2021
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van Bilsen, J.H.M. (author), van den Brink, W. (author), van den Hoek, A.M. (author), Dulos, R. (author), Caspers, M.P.M. (author), Kleeman, R. (author), Wopereis, S. (author), Verschuren, L. (author)Metabolic disorders, such as obesity and type 2 diabetes have a large impact on global health, especially in industrialized countries. Tissue-specific chronic low-grade inflammation is a key contributor to complications in metabolic disorders. To support therapeutic approaches to these complications, it is crucial to gain a deeper understanding...article 2021
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Schoemaker, M.H. (author), Kleemann, R. (author), Morrison, M.C. (author), Verheij, J. (author), Salic, K. (author), van Tol, E.A.F. (author), Kooistra, T. (author), Wielinga, P.Y. (author)Background: Obesity frequently associates with the development of non-alcoholic fatty liver disease (NAFLD) and atherosclerosis. Chronic inflammation in white adipose tissue (WAT) seems to be an important driver of these manifestations. Objective: This study investigated a combination of an extensively hydrolyzed casein (eHC), docosahexaenoic...article 2017
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van der Heijden, R.A. (author), Morrison, M.C. (author), Sheedfar, F. (author), Mulder, P. (author), Schreurs, M. (author), Hommelberg, P.P.H. (author), Hofker, M.H. (author), Schalkwijk, C. (author), Kleemann, R. (author), Tietge, U.J.F. (author), Koonen, D.P.Y. (author), Heeringa, P. (author)Background. Naturally occurring substances from the flavanol and anthocyanin family of polyphenols have been proposed to exert beneficial effects in the course of obesity. We hypothesized that their effects on attenuating obesity-induced dyslipidemia as well as the associated inflammatory sequelae especially have health-promoting potential....article 2016
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Janus, M.M. (author), Keijser, B.J.F. (author), Bikker, F.J. (author), Exterkate, R.A.M. (author), Crielaard, W. (author), Krom, B.P. (author)Commensal oral biofilms, defined by the absence of pathology-related phenotypes, are ubiquitously present. In contrast to pathological biofilms commensal biofilms are rarely studied. Here, the effect of the initial inoculum and subsequent growth conditions on in vitro oral biofilms was studied. Biofilms were inoculated with saliva and grown...article 2015
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Gierman, L.M. (author), Kühnast, S. (author), Koudijs, A. (author), Pieterman, E.J. (author), Kloppenburg, M. (author), van Osch, G.J.V.M. (author), Stojanovic-Susulic, V. (author), Huizinga, T.W.J. (author), Princen, H.M.G. (author), Zuurmond. A.M., (author)Objective Hypercholesterolaemia, a risk factor for atherosclerosis (ATH), has been suggested to have a role in the development of osteoarthritis (OA). To test this hypothesis, the effect of cholesterol and different cholesterol-lowering treatments on OA was investigated in a mouse model resembling human lipoprotein metabolism. Methods Female...article 2014
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Hurst, R. (author), Collings, R. (author), Harvey, L.J. (author), King, M. (author), Hooper, L. (author), Bouwman, J. (author), Gurinovic, M. (author), Fairweather-Tait, S.J. (author)Current reference values for selenium, an essential micronutrient, are based on the intake of selenium that is required to achieve maximal glutathione peroxidase activity in plasma or erythrocytes. In order to assess the evidence of relevance to setting dietary reference values for selenium, the EURRECA Network of Excellence focused on...article 2013
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Gyllenhammar, I. (author), Glynn, A. (author), Darnerud, P.O. (author), Lignell, S. (author), van Delft, R. (author), Aune, M. (author)4-Nonylphenol (NP) and bisphenol A (BPA) are phenolic substances used in high volumes by the industry. Studies on cells and in experimental animals have shown that both these compounds can be classified as estrogenic hormone disrupters. Information about the exposure of humans to NP and BPA is still scarce, especially regarding levels in human...article 2012
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Jantos, R. (author), Schuhmacher, M. (author), Veldstra, J.L. (author), Bosker, W.M. (author), Klöpping-Ketelaars, I. (author), Touliou, K. (author), Sardi, G.M. (author), Brookhuis, K.A. (author), Ramaekers, J.G. (author), Mattern, R. (author), Skopp, G. (author)For forensic toxicological investigations only whole blood, but no serum is often available. Pharmacokinetic data are helpful for interpreting the results, but most of these studies indicate serum or plasma concentrations. In order to obtain reliable conversion factors which also take intersubject variability into account, the blood/serum ratios...article 2011
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Verschuren, L. (author), Wielinga, P.Y. (author), van Duyvenvoorde, W. (author), Tijani, S. (author), Toet, K. (author), van Ommen, B. (author), Kooistra, T. (author), Kleemann, R. (author)Chronic inflammation and proatherogenic lipids are important risk factors of cardiovascular disease (CVD). Specific dietary constituents such as polyphenols and fish oils may improve cardiovascular risk factors and may have a beneficial effect on disease outcomes. We hypothesized that the intake of an antiinflammatory dietary mixture (AIDM)...article 2011
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Gaubius Instituut TNO (author), Coomans, C.P. (author), Geerling, J.J. (author), Guigas, B. (author), van den Hoek, A.M. (author), Parlevliet, E.T. (author), Ouwens, D.M. (author), Pijl, H. (author), Voshol, P.J. (author), Rensen, P.C.N. (author), Havekes, L.M. (author), Romijn, J.A. (author)Insulin signaling in the central nervous system (CNS) is required for the inhibitory effect of insulin on glucose production. Our aim was to determine whether the CNS is also involved in the stimulatory effect of circulating insulin on the tissue-specific retention of fatty acid (FA) from plasma. In wild-type mice, hyperinsulinemic-euglycemic...article 2011
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van Delft, J.H.M. (author), Mathijs, K. (author), Staal, Y.C.M. (author), van Herwijnen, M.H.M. (author), Brauers, K.J.J. (author), Boorsma, A. (author), Kleinjans, J.C.S. (author), TNO Kwaliteit van Leven (author)Chemical carcinogens may cause a multitude of effects inside cells, thereby affecting transcript levels of genes by direct activation of transcription factors (TF) or indirectly through the formation of DNA damage. As the temporal profiles of these responses may be profoundly different, examining time-dependent changes may provide new insights...article 2010
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de Vries-van der Weij, J. (author), Toet, K. (author), Zadelaar, A.S.M. (author), Wielinga, P.Y. (author), Kleemann, R. (author), Rensen, P.C.N. (author), Kooistra, T. (author), TNO Kwaliteit van Leven (author)Objective: Inflammation plays an important role in all stages of atherosclerosis, but little is known about the therapeutic effects of quenching inflammation in already existing atherosclerotic lesions. Putative beneficial effects of salicylate, an inhibitor of NF-κB activation, were studied in mice with established lesions. Methods: ApoE*3...article 2010
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TNO Kwaliteit van Leven (author), Tak, P.P. (author), van Kuijk, A.W.R. (author), de Groot, J. (author), Koeman, R.C. (author), Sakkee, N. (author), Baeten, D.L. (author), Gerlag, D.M. (author)Background: There is growing interest in soluble biomarkers that could be used on the group level for screening purposes in small proof of principle studies during early drug development. We investigated early changes in serum levels of several candidate biomarkers involved in cartilage and bone metabolism following the initiation of adalimumab...article 2010
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TNO Kwaliteit van Leven (author), Verschuren, L. (author), van der Vries de Weij, J. (author), Zadelaar, A.S.M. (author), Kleemann, R. (author), Kooistra, T. (author)The aim of this study was to define the anti-atherosclerotic role of liver-X-receptors (LXRs) under lesion progressive and lesion regressive conditions, to establish a temporal line of events, and to gain insights into the mechanisms underlying the anti-atherogenic potency of LXRs. We used apoE*3Leiden (E3L) mice to comprehensively and time...article 2009
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Noort, D. (author), Fidder, A. (author), Degenhardt-Langelaan, C.E.A.M. (author), Hulst, A.G. (author), TNO Defensie en Veiligheid (author)The persistence in rats of sulfur mustard adducts to albumin and hemoglobin was studied in vivo after exposure (intravenously; 0.3 mg/kg; approximately 0.1 LD50) of rats to sulfur mustard. The albumin adduct (S-HETE)Cys-Pro-Tyr was detectable up to 7 days after the exposure, while the adduct to the N-terminal valine in hemoglobin was still...article 2008
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- Koek, M.M. (author), Muilwijk, B. (author), van Stee, L.L.P. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author) article 2008
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Noort, D. (author), van Zuylen, A. (author), Fidder, A. (author), van Ommen, B. (author), Hulst, A.G. (author), TNO Defensie en Veiligheid (author)Biomonitoring of exposure to the insecticide permethrin is usually performed by analysis of its urinary metabolites 3-phenoxybenzoic acid (3-PBA) or cis/trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid (Cl2CA). We are engaged in the development of a methodology to assess the cumulative internal dose of exposure to...article 2008
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Schreijer, A.J.M. (author), Cannegieter, S.C. (author), Caramella, M. (author), Meijers, J.C.M. (author), Krediet, R.T. (author), Simons, M. (author), Rosendaal, F.R. (author), TNO Defensie en Veiligheid (author)The mechanism of air travel-related venous thrombosis is unclear. Although immobility plays a pivotal role, other factors such as fluid loss may contribute. We investigated whether fluid loss occurred more in individuals with coagulation activation after air travel than in subjects without. As a secondary aim, we investigated whether fluid loss...article 2008
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Stierum, R. (author), Conesa, A. (author), Heijne, W. (author), Ommen, B.v. (author), Junker, K. (author), Scott, M.P. (author), Price, R.J. (author), Meredith, C. (author), Lake, B.G. (author), Groten, J. (author), TNO Kwaliteit van Leven (author), KvL (author)Transcriptomics was performed to gain insight into mechanisms of food additives butylated hydroxytoluene (BHT), curcumin (CC), propyl gallate (PG), and thiabendazole (TB), additives for which interactions in the liver can not be excluded. Additives were administered in diets for 28 days to Sprague-Dawley rats and cDNA microarray experiments were...article 2008