Searched for: subject%3A%22Reagent%22
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Rubbens, M.P. (author), Mol, A. (author), Boerboom, R.A. (author), Bank, R.A. (author), Baaijens, F.P.T. (author), Bouten, C.V.C. (author), TNO Industrie en Techniek TNO Kwaliteit van Leven (author)
Tissue-engineered heart valves lack sufficient amounts of functionally organized structures and consequently do not meet in vivo mechanical demands. To optimize tissue architecture and hence improve mechanical properties, various in vitro mechanical conditioning protocols have been proposed, of which intermittent straining is most promising in...
article 2009
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Zerp, S.F. (author), Vink, S.R. (author), Ruiter, G.A. (author), Koolwijk, P. (author), Peters, E. (author), van der Luit, A.H. (author), de Jong, D. (author), Budde, M. (author), Bartelink, H. (author), van Blitterswijk, W.J. (author), Verheij, M. (author), TNO Kwaliteit van Leven (author)
Synthetic alkylphospholipids (APLs), such as edelfosine, miltefosine and perifosine, constitute a new class of antineoplastic compounds with various clinical applications. Here we have evaluated the antiangiogenic properties of APLs. The sensitivity of three types of vascular endothelial cells (ECs) (bovine aortic ECs, human umbilical vein ECs...
article 2008
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TNO Kwaliteit van Leven (author), Bastiaansen-Jenniskens, Y.M. (author), Koevoet, W. (author), de Bart, A.C.W. (author), Zuurmond, A.M. (author), Bank, R.A. (author), Verhaar, J.A.N. (author), de Groot, J. (author), van Osch, G.J.V.M. (author)
Transforming growth factor beta (TGFbeta) is often used in cartilage tissue engineering to increase matrix formation by cells with various phenotypes. However, adverse effects of TGFbeta, such as extensive cross-linking in cultured fibroblasts, have also been reported. Our goal was to study effects of TGFbeta on collagen cross-linking and...
article 2008
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van der Slot, A.J. (author), van Dura, E.A. (author), de Wit, E.C. (author), de Groot, J. (author), Huizinga, T.W.J. (author), Bank, R.A. (author), Zuurmond, A.M. (author), TNO Preventie en Gezondheid (author)
The hallmark of fibrosis is the excessive accumulation of collagen. The deposited collagen contains increased pyridinoline cross-link levels due to an overhydroxylation of lysine residues within the collagen telopeptides. Lysyl hydroxylase 2b (LH2b) is the only lysyl hydroxylase consistently up-regulated in several forms of fibrosis, suggesting...
article 2005
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Alting, A.C. (author), Weijers, M. (author), de Hoog, E.H.A. (author), van de Pijpekamp, A.M. (author), Cohen Stuart, M.A. (author), Hamer, R.J. (author), de Kruif, C.G. (author), Visschers, R.W. (author), TNO Voeding (author)
The process of cold gelation of ovalbumin and the properties of the resulting cold-set gels were compared to those of whey protein isolate. Under the chosen heating conditions, most protein was organized in aggregates. For both protein preparations, the aggregates consisted of covalently linked monomers. Both types of protein aggregates had...
article 2004
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Boeriu, C.G. (author), Oudgenoeg, G. (author), Spekking, W.T.J. (author), Berendsen, L.B.J.M. (author), Vancon, L. (author), Boumans, H. (author), Gruppen, H. (author), van Berkel, W.J.H. (author), Laane, C. (author), Voragen, A.G.J. (author), TNO Voeding (author)
Heterologous conjugates of wheat arabinoxylan and β-casein were prepared via enzymatic cross-linking, using sequential addition of the arabinoxylan to a mixture of β-casein, peroxidase, and hydrogen peroxide. The maximal formation of adducts between the β-casein and the feruloylated arabinoxylan was reached at a protein-to-arabinoxylan ratio of...
article 2004
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Akkerdaas, J.H. (author), Wensing, M. (author), Knulst, A.C. (author), Krebitz, M. (author), Breiteneder, H. (author), de Vries, S. (author), Penninks, A.H. (author), Aalberse, R.C. (author), Hefle, S.L. (author), van Ree, R. (author)
Background: Allergy to tree nuts, like hazelnuts, ranks among the most frequently observed food allergies. These allergies can start at early childhood and are, in contrast to other food allergies, not always outgrown by the patient. Tree nut allergy is frequently associated with severe reactions. Diagnosis partially relies on in vivo testing by...
article 2003
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Breeveld-Dwarkasing, V.N.A. (author), te Koppele, J.M. (author), Bank, R.A. (author), van der Weijden, G.C. (author), Taverne, M.A.M. (author), Dissel van - Emiliani, F.M.F. (author), Gaubius Instituut TNO (author)
The objective of the present study was to assess if cervical ripeness could be quantified by measuring the percentage of denaturation of the collagen network of the stromal layer. Biopsy specimens from the caudal part of the cervix were obtained from nine pluriparous cows between Days 149 and 157 of gestation (second-trimester biopsy), at...
article 2003
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TNO BIBRA (author), Scotter, M.J. (author), Castle, L. (author), Massey, R.C. (author), Brantom, P.G. (author), Cunninghame, M.E. (author)
Five food-grade mineral hydrocarbon (MHC) materials; a low melting point wax (LMPW), a synthetic wax (C80W) and three white oils (N15H, N70H and P70H) were administered orally to female Fischer-344 rats for 28 and 90 days at a dose level of 2% in the diet. Tissues were examined at autopsy for any treatment-related histopathological changes. The...
article 2003
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TNO Preventie en Gezondheid (author), van der Slot, A.J. (author), Zuurmond, A.M. (author), Bardoel, A.F.J. (author), Wijmenga, C. (author), Pruijs, H.E.H. (author), Sillence, D.O. (author), Brinckmann, J. (author), Abraham, D.J. (author), Black, C.M. (author), Verzijl, N. (author), de Groot, J. (author), Hanemaaijer, R. (author), te Koppele, J.M. (author), Huizinga, T.W.J. (author), Bank, R.A. (author)
The hallmark of fibrotic processes is an excessive accumulation of collagen. The deposited collagen shows an increase in pyridinoline cross-links, which are derived from hydroxylated lysine residues within the telopeptides. This change in cross-linking is related to irreversible accumulation of collagen in fibrotic tissues. The increase in...
article 2003
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Meijer, P. (author), Verbruggen, H.W. (author), de Weerd, B. (author), den Dool, E.J. (author), van Oerle, R. (author), Gaubius Instituut TNO (author)
The comparability of test results for protein S between laboratories is hampered by a high inter-laboratory variability. The effect of the use and type of common reference plasma on the inter-laboratory variability of the total and free protein S measurement was evaluated. The results of 10 plasma samples measured against a centrally distributed...
article 2002
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Bank, R.A. (author), Verzijl, N. (author), Lafeber, F.P.J.G. (author), Tekoppele, J.M. (author), Gaubius instituut TNO TNO Preventie en Gezondheid (author)
Objective: The collagen network in human articular cartilage experiences a large number of stress cycles during life as it shows hardly any turnover after adolescence. We hypothesized that, to withstand fatigue failure, the physical condition of the collagen network laid down at adolescence is of crucial importance for the age of onset of...
article 2002
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Verzijl, N. (author), de Groot, J. (author), Zaken, C.B. (author), Braun-Benjamin, O. (author), Maroudas, A. (author), Bank, R.A. (author), Mizrahi, J. (author), Schalkwijk, C.G. (author), Thorpe, S.R. (author), Baynes, J.W. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), TeKoppele, J.M. (author), Gaubius Instituut TNO (author)
Objective. Age is an important risk factor for osteoarthritis (OA). During aging, nonenzymatic glycation results in the accumulation of advanced glycation end products (AGEs) in cartilage collagen. We studied the effect of AGE crosslinking on the stiffness of the collagen network in human articular cartilage. Methods. To increase AGE levels,...
article 2002
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de Groot, J. (author), Bank, R.A. (author), Tchetverikov, I. (author), Verzijl, N. (author), TeKoppele, J.M. (author), Gaubius Instituut (author)
Osteoarthritis is a disabling joint disease that is characterized by the progressive destruction of articular cartilage. Diagnosis is based on clinical symptoms in combination with radiography, which is relatively insensitive and provides only an indication of accumulated damage. Alternative methods, such as molecular markers, are therefore...
article 2002
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Kok, S.J. (author), Arentsen, N.C. (author), Cools, P.J.C.H. (author), Hankemeier, Th. (author), Schoenmakers, P.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The use of a state-of-the-art commercial solvent-elimination interface for liquid chromatography-infrared spectroscopy is discussed from the perspective of quantitative analysis. The effect of eluent flow-rate is investigated with respect to the homogeneity of the deposit and the trace width along the deposition trace. Low flow-rates (50 μl/min...
article 2002
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Verhoeven, A.C. (author), Boers, M. (author), te Koppele, J.M. (author), van der Laan, W.H. (author), Markusse, H.M. (author), Geusens, P. (author), van der Linden, S. (author), Gaubius Instituut (author)
Objectives. Exploration of bone metabolism changes at different levels of disease activity, both with and without oral corticosteroid therapy, and prediction of changes in joint damage and bone density from the observed changes in markers of bone turnover. Methods. Data analysis from a randomized clinical trial with 155 rheumatoid arthritis (RA)...
article 2001
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Oudgenoeg, G. (author), Hilhorst, R. (author), Piersma, S.R. (author), Boeriu, C.G. (author), Gruppen, H. (author), Hessing, M. (author), Voragen, A.G.J. (author), Laane, C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The tyrosine-containing peptide Gly-Tyr-Gly (GYG) was oxidatively cross-linked by horseradish peroxidase in the presence of hydrogen peroxide. As products, covalently coupled di- to pentamers of the peptide were identified by LC-MS. Oxidative cross-linking of ferulic acid with horseradish peroxidase and hydrogen peroxide resulted in the...
article 2001
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Dallinga, J.W. (author), Krul, C.A.M. (author), Tenfelde, A. (author), Moonen, E.J.C. (author), Vermeer, I.T.M. (author), van Doorn, D. (author), Schothorst, R.C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The thermal energy analyser (TEA) is considered to be the gold standard for the determination of nitrosamines. However, since many laboratories cannot justify the use of such a very specific detection system, alternative detection methods are useful. While standard gas chromatography (GC) detectors lack the selectivity of the TEA detector, mass...
article 2001
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Caspers, M.P.M. (author), Lok, F. (author), Sinjorgo, K.M.C. (author), van Zeijl, M. (author), Nielsen, K.A. (author), Cameron-Mills, V. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
We have identified the major endo-β-l,4-xylanase (XYN-1) in the aleurone of germinating barley grain, and show that it is expressed as a precursor of Mr 61 500 with both N- and C-terminal propeptides. XYN-1 is synthesized as an inactive enzyme in the cytoplasm, and only becomes active at a late stage of germination when the aleurone ceases to...
article 2001
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Bajramović, J.J. (author), Geutskens, S.B. (author), Bsibsi, M. (author), Boot, M. (author), Hassankhan, R. (author), Verhulst, K.C. (author), van Noort, J.M. (author), Div. Immunological and Infect. Dis., TNO Prevention and Health, PO Box 2215, 2301 CE Leiden, Netherlands (author)
We describe a reverse transcriptase-polymerase chain reaction method for the semiquantitative detection of mRNAs encoding the human heat shock proteins αβ-crystallin, Hsp27, and Hsp60. The method involves the coamplification of cellular mRNA-derived cDNA with a dilution series of a competitor fragment (internal standard), using 1 primer pair...
article 2000
Searched for: subject%3A%22Reagent%22
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