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Essens, P.J.M.D. (author), TNO Technische Menskunde (author)Two stages for structuring tone sequences have been distinguished by Povel and Essens (1985). In the first, a mental clock segments a sequence into equal time units (clock model); in the second, intervals are specified in terms of subdivisions of these units. The present findings support the clock model in that it predicts human performance...article 1995
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de Rijke, Y.B. (author), Verwey, H.F. (author), Vogelezang, C.J.M. (author), van der Velde, E.A. (author), Princen, H.M.G. (author), van der Laarse, A. (author), Bruschke, A.V.G. (author), van Berkel, T.J.C. (author), Gaubius Instituut TNO (author)Oxidation of low-density lipoprotein (LDL) may play a causal role in atherosclerosis. In this study we analyzed whether the severity of progression of coronary atherosclerosis is related to the susceptibility of LDL to oxidative modification. On the basis of repeated coronary angiography, 28 coronary bypass patients were divided into two groups:...article 1995
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Wolterbeek, A.P.M. (author), Roggeband, R. (author), van Moorsel, C.J.A. (author), Baan, R.A. (author), Koeman, J.H. (author), Feron, V.J. (author), Rutten, A.A.J.J.L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Although most studies concerning the effect of vitamin A and β-carotene on chemical carcinogenesis are focused on tumour promotion and progression, these compounds may affect initiation as well. In this study the influence of vitamin A and β-carotene on unscheduled DNA synthesis (UDS) was investigated in hamster tracheal epithelium in organ...article 1995
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Havenith, G. (author), Inoue, Y. (author), Luttikholt, V. (author), Kenny, W.L. (author)Cross-section comparisons of the effect of age on physiological responses to heat stress have yielded conflicting results, in part because of the inability to separate chronological age from factors which change in concert with the biological aging process. The present study was designed to examine the relative influence of age on cardiovascular...article 1995
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Claassen, I.J.T.M. (author), Osterhaus, A.D.M.E. (author), Claassen, E. (author), Gaubius Instituut TNO (author)Several mechanisms have been postulated to explain the relatively high immunogenicity of antigens presented in immune-stimulating complexes (iscom). Their potency can in part be explained by the specific targeting of these structures to cells presenting antigens to the immune system. However, until now no method for the subcellular detection of...article 1995
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van de Kar, N.C.A.J. (author), Kooistra, T. (author), Vermeer, M. (author), Lesslauer, W. (author), Monnens, L.A.H. (author), van Hinsbergh, V.W.M. (author), TNO Preventie en Gezondheid (author)Infections with verocytotoxin (VT) producing Escherichia coil have been strongly implicated in the epidemic form of hemolytic uremic syndrome (HUS). Endothelial damage plays a central role in the pathogenesis of HUS. In vitro studies have shown that VT can damage endothelial cells after interaction with its cellular receptor...article 1995
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Draijer, R. (author), Atsma, D.E. (author), van der Laarse, A. (author), van Hinsbergh, V.W.M. (author), Gaubius Instituut TNO (author)Previous studies have demonstrated that cGMP and cAMP reduce the endothelial permeability for fluids and macromolecules when the endothelial permeability is increased by thrombin. In this study, we have investigated the mechanism by which cGMP improves the endothelial barrier function and examined whether nitric oxide (NO) can serve as an...article 1995
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Haider, A.W. (author), Andreotti, F. (author), Hackett, D.R. (author), Tousoulis, D. (author), Kluft, C. (author), Maseri, A. (author), Davies, G.J. (author), Gaubius Instituut TNO (author)Objectives. This study investigated the influence of early spontaneous intermittent reperfusion on the extent of myocardial damage and its relation to endogenous hemostatic activity, Background. In the early phase of acute myocardial infarction coronary occlusion is often intermittent, even before thrombolytic therapy is administered. The...article 1995
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Arts, J. (author), Lansink, T. (author), Grimbergen, J. (author), Toet, K.H. (author), Kooistra, T. (author), Instituut voor verouderings- en vaatziekten onderzoek TNO (author)We have previously shown that the pleiotropic agent sodium butyrate strongly stimulates tissue-type plasminogen activator (t-PA) expression in human umbilical vein endothelial cells (HUVEC). Here we provide the following evidence that the butyrate-induced t-PA expression in HUVEC involves histone H4 acetylation. (1) t-PA induction by butyrate...article 1995
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Radl, J. (author), Hoogeveen, C.M. (author), van den Wall Bake, A.W.L. (author), Mestecky, J. (author), Instituut voor verouderings- en vaatziekten onderzoek TNO (author)Chemicals/CAS: hemagglutinin, 37333-12-3; sialidase, 9001-67-6; Antibodies, Monoclonal; Antibodies, Viral; Hemagglutinins, Viral; Immunoglobulin A; Immunoglobulin G; Influenza Vaccine; Neuraminidase, EC 3.2.1.18article 1995
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de Bart, A.C.W. (author), Quax, P.H.A. (author), Löwik, C.W.G.M. (author), Verheijen, J.H. (author), TNO Preventie en Gezondheid (author)Plasmin-mediated extracellular proteolysis has been implicated in the degradation of bone in normal and pathological conditions. Normal and malignant osteoblasts can produce both tissue-type plasminogen activator (t- PA) and urokinase-type plasminogen activator (u-PA). We have used the osteosarcoma cell line MG63 to address the question of...article 1995
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Draijer, R. (author), Vaandrager, A.B. (author), Nolte, C. (author), de Jonge, H.R. (author), Walter, U. (author), van Hinsbergh, V.W.M. (author), Gaubius Instituut TNO (author)Previous studies demonstrated that the thrombin-induced permeability of endothelial cell monolayers is reduced by the elevation of cGMP. In the present study, the presence of cGMP-dependent protein kinase (cGMP-PK) immunoreactivity and activity in various types of human endothelial cells (ECs) and the role of cGMP-PK in the reduction of thrombin...article 1995
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- te Koppele, J.M. (author), 't Hart, B.A. (author), Gaubius Instituut TNO (author) article 1995
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Baleiras Couto, M.M. (author), Vogels, J.T.W.E. (author), Hofstra, H. (author), Huis in 'tVeld, J.H.J. (author), van der Vossen, J.M.B.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The random amplified polymorphic DNA (RAPD) assay and the restriction enzyme analysis of PCR amplified rDNA are compared for the identification of the common spoilage yeasts Zygosaccharomyces bailii, Z. rouxii, Saccharomyces cerevisiae, Candida valida and C. lipolytica. Both techniques proved to be adequate tools for yeast identification. Since...article 1995
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Myrup, B. (author), Hansen, P.M. (author), Jensen, T. (author), Kofoed-Enevoldsen, A. (author), Feldt-Rasmussen, B. (author), Gram, J. (author), Kluft, C. (author), Jespersen, J. (author), Deckert, T. (author), Gaubius Instituut TNO (author)We investigated the effect of heparin on urinary albumin excretion in patients with insulin-dependent diabetes mellitus. 39 patients with persistent urinary albumin excretion of 30-300 mg/24 h were randomly treated for 3 months with subcutaneous injections twice daily of isotonic saline, 5000 IU unfractionated heparin, or 2000 anti-Xa IU low...article 1995
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Emeis, J.E. (author), Hoekzema, R. (author), de Vos, A.F. (author), TNO Preventie en Gezondheid (author)In experimental animals and humans, intravenous (IV) injection of endotoxin induces large increases in circulating plasminogen activator inhibitor type-1 (PAI-1), a major inhibitor of blood fibrinolysis. A similar increase is seen after the injection of interleukin-1 (IL-1) or of tumor necrosis factor-α (TNF-α), suggesting that these cytokines...article 1995
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Bles, W. (author), Jelmorini, M. (author), Bekkering, H. (author), de Graaf, B. (author), TNO Technische Menskunde (author)A sensation of linear self-motion can be induced in a blindfolded stationary sitting subject, who keeps contact with a linearly moving platform (acceleration 0.1 m/s²) in the frontoparallel plane by means of a hand-over-hand walking action. When discordant suprathreshold vestibular information from the otoliths is added by moving the subject...article 1995
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van Boheemen, P.A. (author), van den Hoogen, N.M. (author), Koolwijk, N. (author), Instituut voor Verouderings- en Vaatziekten Onderzoek TNO (author)Six murine monoclonal antibodies (MAbs) specific for urokinase-type plasminogen activator (u-PA) were tested for their ability to inhibit u-PA activity in three different assays with respect to amidolytic activity, plasminogen activation and fibrinolytic activity. Two of the MAbs were able to inhibit the amidolytic activity of u-PA. One MAb (LMW...article 1995
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van Ree, J.H. (author), Gijbels, M.J.J. (author), van den Broek, W.J.A.A. (author), Hofker, M.H. (author), Havekes, L.M. (author), TNO Preventie en Gezondheid (author)Apolipoprotein (apo) E-deficient mice were fed a hypercholesterolemic diet for 14 weeks. Mean serum cholesterol levels rose to 37.5 mM. Upon complete necroscopy, massive xanthomatous lesions were noticed in various tissues, with a predilection for subcutaneous and peritendinous tissues, while control animals on the same diet (3.4 mM serum...article 1995
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de Nooy, A.E.J. (author), Besemer, A.C. (author), van Bekkum, H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The kinetics of the TEMPO-mediated oxidation of methyl α-D- glucopyranoside to sodium methyl α-D-glucopyranosiduronate were studied. An intermediate was found which was identified as the hydrated aldehyde. This was oxidised in the same manner as the alcohol, with pseudo first order rate constants ratio k(obs,ald)/k(obs,alc) = 7. The reaction...article 1995