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Parnham, M.J. (author), Bogaards, J.J.P. (author), Schrander, F. (author), Schut, M.W. (author), Orešković, K. (author), Mildner, B. (author), TNO Kwaliteit van Leven (author)
PLD-118 is a novel, oral antifungal drug, under development for the treatment of Candida infections. Possible metabolism of PLD-118 by rat, dog and human S9 liver homogenates and inhibition of human cytochrome P450 (CYP) enzymes were investigated. PLD-118 (10 and 100 μm) incubated for 0-60 min with S9 fractions and NADPH was determined by HPLC,...
article 2005
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Kienhuis, A.S. (author), Wortelboer, H.M. (author), Hoflack, J.C. (author), Moonen, E.J. (author), Kleinjans, J.C.S. (author), van Ommen, B. (author), van Delft, J.H.M. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author)
Sandwich-cultured primary rat hepatocytes are often used as an in vitro model in toxicology and pharmacology. However, loss of liver-specific functions, in particular, the decline of cytochrome P450 (P450) enzyme activity, limits the value of this model for prediction of in vivo toxicity. In this study, we investigated whether a hepatic in vitro...
article 2006
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Eefting, D. (author), Bot, I. (author), de Vries, M.R. (author), Schepers, A. (author), van Bockel, J.H. (author), van Berkel, T.J.C. (author), Biessen, E.A.L. (author), Quax, P.H.A. (author), TNO Kwaliteit van Leven (author)
Objective: Inflammatory responses to vascular injury are key events in vein graft disease and accelerated atherosclerosis, which may result in bypass failure. The monocyte chemoattractant protein-1 (MCP-1)/CC-chemokine receptor (CCR)-2 pathway is hypothesized to play a central role. A murine model for vein graft disease was used to study the...
article 2009
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Lamers, R.-J.A.N. (author), de Groot, J. (author), Spies-Faber, E.J. (author), Jellema, R.H. (author), Kraus, V.B. (author), Verzijl, N. (author), te Koppele, J.M. (author), Spijksma, G.K. (author), Vogels, J.T.W.E. (author), van der Greef, J. (author), van Nesselrooij, J.H.J. (author)
Osteoarthritis (OA), one of the most common diseases among the elderly, is characterized by the progressive destruction of joint tissues. Its etiology is largely unclear and no effective disease-modifying treatment is currently available. Metabolic fingerprinting provides a novel tool for the identification of biomarkers. A metabolic fingerprint...
article 2003
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Delaney, B. (author), Carlson, T. (author), Zheng, G.-H. (author), Hess, R. (author), Knutson, N. (author), Frazer, S. (author), Ostergren, K. (author), van Zijverden, M. (author), Knippels, L. (author), Jonker, D. (author), Penninks, A. (author), TNO Voeding (author)
The cholesterol-lowering effect observed following consumption of oats and barley is attributable to the β-glucan component of the soluble fiber fraction of these cereal grains. β-Glucan has also been reported to modulate immune activity, however, few studies have evaluated the hematological effects of β-glucan following oral exposure. In the...
article 2003
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Lina, B.A.R. (author), Bos-Kuijpers, M.H.M. (author), Til, H.P. (author), Bär, A. (author)
The potential toxicity and carcinogenicity of erythritol, a low-calorie sugar substitute, were examined in Wistar Crl:(WI) WU BR rats. Groups of 50 rats of each sex consumed diets with 0, 2, 5, or 10% erythritol, or 10% mannitol, for a period of 104-107 weeks. To each of these main groups, two satellite groups of 20 males each were attached for...
article 1996
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Hissink, A.M. (author), Krüse, J. (author), Kulig, B.M. (author), Verwei, M. (author), Muijser, H. (author), Salmon, F. (author), Leenheers, L.H. (author), Owen, D.E. (author), Lammers, J.H.C.M. (author), Freidig, A.P. (author), McKee, R.H. (author), TNO Kwaliteit van Leven (author)
As part of a project designed to develop a framework for extrapolating acute central nervous system (CNS) effects of hydrocarbon solvents in animals to humans, experimental studies were conducted in rats and human volunteers in which acute CNS effects were measured and toxicokinetic data were collected. A complex hydrocarbon solvent, white...
article 2007
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Nieuwenhuizen, W.F. (author), Dekker, H.L. (author), de Koning, L.J. (author), Gröneveld, T. (author), de Koster, C.G. (author), de Jong, G.A.H. (author)
The molecular structures determine the physical properties of milk proteins and are important for the texture of many dairy-based foods. Bovine α-lactalbumin (α-LA) is a globular 123 amino acid Ca2+ binding milk protein. Modification with microbial Ca2+ independent transglutaminase (MTGase) was used to modify lysines and glutamines in holo and...
article 2003
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Izeboud, C.A. (author), Hoebe, K.H.N. (author), Grootendorst, A.F. (author), Nijmeijer, S.M. (author), van Miert, A.S. (author), Witkamp, R.F. (author), Rodenburg, R.J.T. (author), TNO Voeding (author)
Objective and Design: To investigate the effects of β2- adrenoceptor (β2-AR) stimulation on endotoxin-induced liver damage and systemic cytokine levels in rats. Subjects: Standard male Wistar rats. Treatment: A disease-model of lipolysaccharide (LPS)-induced acute systemic inflammation was used. The β2-selective AR agonist clenbuterol was...
article 2004
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ter Beek, A. (author), Keijser, B.J.F. (author), Boorsma, A. (author), Zakrzewska, A. (author), Orij, R. (author), Smits, G.J. (author), Brul, S. (author), TNO Kwaliteit van Leven (author)
The weak organic acid sorbic acid is a commonly used food preservative, as it inhibits the growth of bacteria, yeasts, and molds. We have used genome-wide transcriptional profiling of Bacillus subtilis cells during mild sorbic acid stress to reveal the growth-inhibitory activity of this preservative and to identify potential resistance...
article 2008
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Kuper, C.F. (author), van Zijverden, M. (author), Klaassen, C. (author), Tegelenbosch-Schouten, M. (author), Wolterbeek, A.P.M. (author), TNO Kwaliteit van Leven (author)
The effects of cyclosporin A (CY) and cyclophosphamide (CPS) on Peyer's patches (PP) were studied in Wistar rats, exposed in utero and neonatally or during adult age. In one study, pregnant dams received 5 or 15 mg/kg bw/day CY from gestation day 6 to day 21 of lactation. In two other studies, animals were exposed at young adult age: female rats...
article 2007
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Hueber-Becker, F. (author), Nohynek, G.J. (author), Meuling, W.J.A. (author), Benech-Kieffer, F. (author), Toutain, H. (author), TNO Voeding (author)
We investigated the absorption of a commercial [14C]-PPD- containing oxidative dark-shade hair dye in human volunteers as well as in vitro using human or pig ear skin. The hair of eight male volunteers was cut to a standard length, dyed, washed, dried, clipped and collected. Hair, washing water, materials used in the study and a 24-h scalp wash...
article 2004
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Gusakov, A.V. (author), Sinitsyn, A.P. (author), Salanovich, T.N. (author), Bukhtojarov, F.E. (author), Markov, A.V. (author), Ustinov, B.B. (author), Zeijl, C.V. (author), Punt, P. (author), Burlingame, R. (author), TNO Kwaliteit van Leven (author)
Two forms of cellobiohydrolase I (CBH I, Cel7A) were purified from the culture ultrafiltrate of a mutant strain of the fungus Chrysosporium lucknowense, an industrial producer of cellulases and hemicellulases. The enzymes had different molecular masses (52 and 65 kDa, SDS-PAGE data) but the same pI (4.5). Peptide sequencing showed that a single...
article 2005
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Tonk, E.C.M. (author), de Groot, D.M.G. (author), Penninks, A.H. (author), Waalkens - Berendsen, I.D.H. (author), Wolterbeek, A.P.M. (author), Slob, W. (author), Piersma, A.H. (author), van Loveren, H. (author), TNO Kwaliteit van Leven (author)
Current developmental and reproductive toxicity protocols include only a limited set of parameters for effects on the developing immune system. In this study, a wide range of immunological parameters were included in a pre- and postnatal developmental toxicity study. Dose-response data were compared to determine the relative sensitivity of...
article 2010
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Bastiaansen-Jenniskens, Y.M. (author), Koevoet, W. (author), de Bart, A.C.W. (author), van der Linden, J.C. (author), Zuurmond, A.M. (author), Weinans, H. (author), Verhaar, J.A.N. (author), van Osch, G.J.V.M. (author), de Groot, J. (author), TNO Kwaliteit van Leven (author)
Background: Damage to articular cartilage is one of the features of osteoarthritis (OA). Cartilage damage is characterised by a net loss of collagen and proteoglycans. The collagen network is considered highly important for cartilage function but little is known about processes that control composition and function of the cartilage collagen...
article 2008
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Wolterbeek, A.P.M. (author), Ciotti, M.A.L.T. (author), Schoevers, E.J. (author), Roggeband, R. (author), Baan, R.A. (author), Feron, V.J. (author), Rutten, A.A.J.J.L. (author), TNO Voeding (author)
Tracheal organ cultures and isolated tracheal epithelial cells are frequently used to study effects of carcinogens and retinoids on both proliferation and differentiation of respiratory tract epithelial cells. For each of these in vitro models, optimal culture conditions have been established, varying in type of culture medium and composition of...
article 1996
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Yuan, X.-L. (author), van der Kaaij, R.M. (author), van den Hondel, C.A.M.J.J. (author), Punt, P.J. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)
The filamentous ascomycete Aspergillus niger is well known for its ability to produce a large variety of enzymes for the degradation of plant polysaccharide material. A major carbon and energy source for this soil fungus is starch, which can be degraded by the concerted action of α-amylase, glucoamylase and α-glucosidase enzymes, members of the...
article 2008
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Karnaukhova, E. (author), Ophir, Y. (author), Trinh, L. (author), Dalal, N. (author), Punt, P.J. (author), Golding, B. (author), Shiloach, J. (author), TNO Kwaliteit van Leven (author)
Background: Human α1-proteinase inhibitor (α1-PI), also known as antitrypsin, is the most abundant serine protease inhibitor (serpin) in plasma. Its deficiency is associated with development of progressive, ultimately fatal emphysema. Currently in the United States, α1-PI is available for replacement therapy as an FDA licensed plasma-derived (pd...
article 2007
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Lina, B.A.R. (author), Kuijpers, M.H.M. (author), TNO Voeding (author)
The effects of diet-induced acid-base disturbances were examined in 4-week, 13-week and 18-month toxicity studies, and in a 30-month carcinogenicity study. Rats were fed a natural ingredient diet (controls), supplemented with 2% or 4% KHCO3 (base-forming diets), or with 1% or 2.1% NH4Cl (acid-forming diets). Additional controls were fed 3% KCl ...
article 2004
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de Haan, W. (author), de Vries-van der Weij, J. (author), Mol, I.M. (author), Hoekstra, M. (author), Romijn, J.A. (author), Jukema, J.W. (author), Havekes, L.M. (author), Princen, H.M.G. (author), Rensen, P.C.N. (author), TNO Kwaliteit van Leven (author)
Pregnane X receptor (PXR) agonism has been shown to affect multiple steps in both the synthesis and catabolism of HDL, but its integrated effect on HDL metabolism in vivo remains unclear. The aim of this study was to evaluate the net effect of PXR agonism on HDL metabolism in ApoE*3-Leiden (E3L) and E3L.CETP mice, well-established models for...
article 2009
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