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Kersten, S. (author), Lichtenstein, L. (author), Steenbergen, E. (author), Mudde, K. (author), Hendriks, H.F.J. (author), Hesselink, M.K. (author), Schrauwen, P. (author), Müller, M. (author), TNO Kwaliteit van Leven (author)OBJECTIVE-: Plasma lipoprotein levels are determined by the balance between lipoprotein production and clearance. Recently, angiopoietin-like protein 4 (ANGPTL4) was uncovered as a novel endocrine factor that potently raises plasma triglyceride levels by inhibiting triglyceride clearance. However, very little is known about ANGPTL4 in human....article 2009
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Bastiaansen-Jenniskens, Y.M. (author), Koevoet, W. (author), Jansen, K.M.B. (author), Verhaar, J.A.N. (author), de Groot, J. (author), Vanosch, G.J.V.M. (author), TNO Kwaliteit van Leven (author)To understand cartilage degenerative diseases and improve repair procedures, we investigate the influence of glycosaminoglycans (GAGs) on cartilage matrix biochemistry and functionality. Bovine articular chondrocytes were cultured in alginate beads with(out) para-nitrophenyl-beta-d-xyloside (PNPX) to inhibit GAG incorporation into newly formed...article 2009
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Liu, J. (author), O'Brien, K.L. (author), Lynch, D.M. (author), Simmons, N.L. (author), La Porte, A. (author), Riggs, A.M. (author), Abbink, P. (author), Coffey, R.T. (author), Grandpre, L.E. (author), Seaman, M.S. (author), Landucci, G. (author), Forthal, D.N. (author), Montefiori, D.C. (author), Carville, A. (author), Mansfield, K.G. (author), Havenga, M.J. (author), Pau, M.G. (author), Goudsmit, J. (author), Barouch, D.H. (author), TNO Kwaliteit van Leven (author)A recombinant adenovirus serotype 5 (rAd5) vector-based vaccine for HIV-1 has recently failed in a phase 2b efficacy study in humans. Consistent with these results, preclinical studies have demonstrated that rAd5 vectors expressing simian immunodeficiency virus (SIV) Gag failed to reduce peak or setpoint viral loads after SIV challenge of rhesus...article 2009
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TNO Kwaliteit van Leven (author), Thissen, U. (author), Wopereis, S. (author), van den Berg, S.A.A. (author), Bobeldijk, I. (author), Kleemann, R. (author), Kooistra, T. (author), van Dijk, K.W. (author), van Ommen, B. (author), Smilde, A.K. (author)Background: In the fields of life sciences, so-called designed studies are used for studying complex biological systems. The data derived from these studies comply with a study design aimed at generating relevant information while diminishing unwanted variation (noise). Knowledge about the study design can be used to decompose the total data...article 2009
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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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Koudstaal, W. (author), Hartgroves, L. (author), Havenga, M. (author), Legastelois, I. (author), Ophorst, C. (author), Siewerts, M. (author), Zuijdgeest, D. (author), Vogels, R. (author), Custers, J. (author), de Boer-Luijtze, E. (author), de Leeuw, O. (author), Cornelissen, L. (author), Goudsmit, J. (author), Barclay, W. (author), TNO Kwaliteit van Leven (author)Reverse genetics, the generation of influenza viruses from cDNA, presents a rapid method for creating vaccine strains. The technique necessitates the use of cultured cells. Due to technical and regulatory requirements, the choice of cell lines for production of human influenza vaccines is limited. PER.C6® cells, among the most extensively...article 2009
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van der Hoorn, J.W.A. (author), Jukema, J.W. (author), Havekes, L.M. (author), Lundholm, E. (author), Camejo, G. (author), Rensen, P.C.N. (author), Princen, H.M.G. (author), TNO Kwaliteit van Leven (author)Background and purpose: We have evaluated the effects of a peroxisome proliferator-activated receptor (PPAR)α/γ agonist on the progression of pre-existing atherosclerotic lesions in APOE*3Leiden.cholesteryl ester transfer protein (E3L.CETP) transgenic mice. Experimental approach: E3L.CETP mice were fed a high-cholesterol diet for 11 weeks to...article 2009
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Plat, J. (author), de Jong, A. (author), Volger, O.L. (author), Princen, H.M.G. (author), Mensink, R.P. (author), TNO Kwaliteit van Leven (author)Intestinal absorption of plant sterols and stanols is much lower as compared with that of cholesterol; and therefore, serum concentrations are low. Circulating plant sterols and stanols are incorporated into tissues. However, hardly any data are available about tissue distributions of individual plant sterols and stanols, particularly in...article 2008
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de Ruiter, M.C. (author), Alkemade, F.E. (author), de Gittenberger - Groot, A.C. (author), Poelmann, R.E. (author), Havekes, L.M. (author), van Dijk, K.W. (author), TNO Kwaliteit van Leven (author)In this review, we briefly summarize the possible signals crossing the placental barrier and discuss the molecular mechanisms of epigenetic programming in the developing fetus leading to increased athero-susceptibility of the vessel wall. © 2008 Wolters Kluwer Health | Lippincott Williams & Wilkins.article 2008
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Kel, J.M. (author), Slütter, B. (author), Drijfhout, J.W. (author), Koning, F. (author), Nagelkerken, L. (author), TNO Kwaliteit van Leven (author)Tolerance to experimental autoimmune encephalomyelitis (EAE) in SJL mice can be induced by immunization with a mannosylated form of the proteolipid protein (M-PLP139-151), despite the presence of CFA. The state of tolerance is characterized by poor delayed-type hypersensitivity responses and the absence of clinical EAE symptoms. In vivo...article 2008
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Schutte, M.E. (author), Alink, G.M. (author), Freidig, A.P. (author), Spenkelink, B. (author), Vaessen, J.C.H. (author), van de Sandt, J.J.M. (author), Groten, J.P. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author), KvL (author)This study investigates whether the previous observation that quercetin increases the transport of PhIP through Caco-2 monolayers in vitro could be confirmed in an in vivo rat model. Co-administration of 1.45 μmol PhIP/kg bw and 30 μmol quercetin/kg bw significantly increased the blood AUC(0-8 h) of PhIP in rats to 131 ± 14% of the AUC(0-8 h)...article 2008
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Dijkstra, S. (author), Kooij, G. (author), Verbeek, R. (author), van der Pol, S.M.A. (author), Amor, S. (author), Geisert Jr., E.E. (author), Dijkstra, C.D. (author), van Noort, J.M. (author), Vries, H.E.D. (author), TNO Kwaliteit van Leven (author)Leukocyte infiltration is a key step in the development of demyelinating lesions in multiple sclerosis (MS), and molecules mediating leukocyte-endothelial interactions represent prime candidates for the development of therapeutic strategies. Here we studied the effects of blocking the integrin-associated tetraspanin CD81 in in vitro and in vivo...article 2008
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Punt, A. (author), Freidig, A.P. (author), Delatour, T. (author), Scholz, G. (author), Boersma, M.G. (author), Schilter, B. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author)The present study defines a physiologically based biokinetic (PBBK) model for the alkenylbenzene estragole in rat based on in vitro metabolic parameters determined using relevant tissue fractions, in silico derived partition coefficients, and physiological parameters derived from the literature. The model consists of eight compartments including...article 2008
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Hoogendoorn, R.J.W. (author), Helder, M.N. (author), Kroeze, R.J. (author), Bank, R.A. (author), Smit, T.H. (author), Wuisman, P.I.J.M. (author), TNO Kwaliteit van Leven (author)STUDY DESIGN. Twelve goats were chemically degenerated and the development of the degenerative signs was followed for 26 weeks to evaluate the progression of the induced degeneration. The results were also compared with a previous study to determine the reproducibility. OBJECTIVES. The purpose of this study was determine whether this...article 2008
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Hoogendoorn, R. (author), Doulabi, B.Z. (author), Huang, C.L. (author), Wuisman, P.I. (author), Bank, R.A. (author), Helder, M.N. (author), TNO Kwaliteit van Leven (author)Study Design. Caprine lumbar intervertebral discs (IVD) were collected from previous studies and categorized as normal, mildly, or severely degenerated. The biochemical composition and the RNA profiles present in both the nucleus pulposus (NP) and the anulus fibrosus (AF) were analyzed. Objective. To determine the molecular changes occurring in...article 2008
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van Weel, V. (author), van Tongeren, R.B. (author), van Hinsbergh, V.W.M. (author), van Bockel, J.H. (author), Quax, P.H.A. (author), TNO Kwaliteit van Leven (author)Stimulation of vascular growth to treat limb ischemia is promising, and early results obtained from uncontrolled clinical trials using angiogenic agents, e.g., vascular endothelial growth factor, led to high expectations. However, negative results from recent placebo-controlled trials warrant further research. Here, current insights into...article 2008
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de Haan, W. (author), de Vries-van der Weij, J. (author), van der Hoorn, J.W.A. (author), Gautier, T. (author), van der Hoogt, C.C. (author), Westerterp, M. (author), Romijn, J.A. (author), Jukema, J.W. (author), Havekes, L.M. (author), Princen, H.M.G. (author), Rensen, P.C.N. (author)BACKGROUND - Although cholesteryl ester transfer protein (CETP) inhibition is regarded as a promising strategy to reduce atherosclerosis by increasing high-density lipoprotein cholesterol, the CETP inhibitor torcetrapib given in addition to atorvastatin had no effect on atherosclerosis and even increased cardiovascular death in the recent...article 2008
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- TNO Kwaliteit van Leven (author), Timmers, L. (author), Sluijter, J.P.G. (author), van Keulen, J.K. (author), Hoefer, I.E. (author), Nederhoff, M.G.J. (author), Goumans, M.J. (author), Doevendans, P.A. (author), van Echteld, C.J.A. (author), Joles, J.A. (author), Quax, P.H. (author), Piek, J.J. (author), Pasterkamp, G. (author), de Kleijn, D.P.V. (author) article 2008
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Fabriek, B.O. (author), Møller, H.J. (author), Vloet, R.P.M. (author), van Winsen, L.M. (author), Hanemaaijer, R. (author), Teunissen, C.E. (author), Uitdehaag, B.M.J. (author), van den Berg, T.K. (author), Dijkstra, C.D. (author), TNO Kwaliteit van Leven (author)The scavenger receptor CD163 is selectively expressed on tissue macrophages and human monocytes. CD163 has been implicated to play a role in the clearance of hemoglobin and in the regulation of cytokine production by macrophages. Membrane CD163 can be cleaved by matrix metalloproteinases (MMP) resulting in soluble CD163 (sCD163). In the present...article 2007
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van Weel, V. (author), Toes, R.E.M. (author), Seghers, L. (author), Deckers, M.M.L. (author), de Vries, M.R. (author), Eilers, P.H. (author), Sipkens, J. (author), Schepers, A. (author), Eefting, D. (author), van Hinsbergh, V.W.M. (author), van Bockel, J.H. (author), Quax, P.H.A. (author), TNO Kwaliteit van Leven (author)OBJECTIVE - The immune system is thought to play a crucial role in regulating collateral circulation (arteriogenesis), a vital compensatory mechanism in patients with arterial obstructive disease. Here, we studied the role of lymphocytes in a murine model of hindlimb ischemia. METHODS AND RESULTS - Lymphocytes, detected with markers for NK1.1,...article 2007