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Wijntje, R. (author), Bosch, H. (author), de Haan, A.B. (author), Bussmann, P.J.T. (author), TNO Kwaliteit van Leven TNO Bouw en Ondergrond (author)In prior work we studied the adsorption of triglycine on zeolite Y under reference conditions. This study aims to solve the question of which adsorbent properties and process conditions influence the adsorption triglycine from an aqueous solution by zeolite Y. Relevant zeolite parameters to study are: the amount of acidic sites (Si/Al2 ratio),...article 2007
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Kamphorst, J.J. (author), van der Heijden, R. (author), de Groot, J. (author), Lafeber, F.P.J.G. (author), Reijmers, T.H. (author), van El, B. (author), Tjaden, U.R. (author), van der Greef, J. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author)Synovial fluid potentially contains markers for early diagnosis and disease progression in degenerative joint diseases such as osteoarthritis. Here, a method is described for profiling endogenous peptides in human synovial fluid, using ultrafiltration, solid-phase extraction, nanoscale liquid chromatography, and high-resolution mass spectrometry...article 2007
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Bsibsi, M. (author), Bajramovic, J.J. (author), van Duijvenvoorden, E. (author), Persoon, C. (author), Ravid, R. (author), van Noort, J.M. (author), Vogt, M.H.J. (author), TNO Kwaliteit van Leven (author)Human astrocytes express a limited repertoire of Toll-like receptor (TLR) family members including TLR1-4, which are expressed on the cell surface. Also, TLR3 but not TLR4 activation on astrocytes induces expression of several factors involved in neuroprotection and down-regulation of inflammation rather than in the onset of traditional pro...article 2007
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Schaafsma, G. (author), TNO Kwaliteit van Leven (author)The increasing prevalence in many countries of people with overweight and obesity is undoubtedly one of the biggest threats to public health. Dietary proteins, because of their positive effects on satiation/ satiety, may help to reduce energy intake and promote a healthy body composition with less body fat. Several mechanisms have been put...article 2006
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Yuan, X.L. (author), Goosen, C. (author), Kools, H. (author), van der Maarel, M.J.E.C. (author), van den Hondel, C.A.M.J.J. (author), Dijkhuizen, L. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)As a soil fungus, Aspergillus niger can metabolize a wide variety of carbon sources, employing sets of enzymes able to degrade plant-derived polysaccharides. In this study the genome sequence of A. niger strain CBS 513.88 was surveyed, to analyse the gene/enzyme network involved in utilization of the plant storage polymer inulin, and of sucrose,...article 2006
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Gaspari, M. (author), Verhoeckx, K.C.M. (author), Verheij, E.R. (author), van der Greef, J. (author), TNO Kwaliteit van Leven (author)LC-MS-based proteomics requires methods with high peak capacity and a high degree of automation, integrated with data-handling tools able to cope with the massive data produced and able to quantitatively compare them. This paper describes an off-line two-dimensional (2D) LC-MS method and its integration with software tools for data preprocessing...article 2006
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van Hijum, S.A.F.T. (author), Kralj, S. (author), Ozimek, L.K. (author), Dijkhuizen, L. (author), van Geel-Schutten, G.H. (author), TNO Kwaliteit van Leven (author)Lactic acid bacteria (LAB) employ sucrase-type enzymes to convert sucrose into homopolysaccharides consisting of either glucosyl units (glucans) or fructosyl units (fructans). The enzymes involved are labeled glucansucrases (GS) and fructansucrases (FS), respectively. The available molecular, biochemical, and structural information on sucrase...article 2006
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Sivan, S.S. (author), Tsitron, E. (author), Wachtel, E. (author), Roughley, P. (author), Sakkee, N. (author), van der Ham, F. (author), de Groot, J. (author), Maroudas, A. (author), TNO Kwaliteit van Leven (author)During aging and degeneration, many changes occur in the structure and composition of human cartilaginous tissues, which include the accumulation of the AGE (advanced glycation end-product), pentosidine, in long-lived proteins. In the present study, we investigated the accumulation of pentosidine in constituents of the human IVD (intervertebral...article 2006
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Bikker, F.J. (author), Kaman-van Zanten, W.E. (author), de Vries-van de Ruit, A.M.B.C. (author), Voskamp-Visser, I. (author), van Hooft, P.A.V. (author), Mars-Groenendijk, R.H. (author), de Visser, P.C. (author), Noort, D. (author), TNO Defensie en Veiligheid (author)Drosocin is a 19-mer, cationic antimicrobial peptide from Drosophila melanogaster. The aim of the study was to examine the antibacterial spectrum of unglycosylated drosocin analogues. Furthermore, the amino acid sequence of DnaK, drosocin's intracellular target, from susceptible species was aligned and studied for sequence homology. From this a...article 2006
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Koek, M.M. (author), Muilwijk, B. (author), van der Werf, M.J. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author)An analytical method was set up suitable for the analysis of microbial metabolomes, consisting of an oximation and silylation derivatization reaction and subsequent analysis by gas chromatography coupled to mass spectrometry. Microbial matrixes contain many compounds that potentially interfere with either the derivatization procedure or analysis...article 2006
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Schepers, A. (author), Eefting, D. (author), Bonta, P.I. (author), Grimbergen, J.M. (author), de Vries, M.R. (author), van Weel, V. (author), de Vries, C.J. (author), Egashira, K. (author), van Bockel, J.H. (author), Quax, P.H.A. (author), TNO Kwaliteit van Leven (author)OBJECTIVE - Because late vein graft failure is caused by intimal hyperplasia (IH) and accelerated atherosclerosis, and these processes are thought to be inflammation driven, influx of monocytes is one of the first phenomena seen in IH, we would like to provide direct evidence for a role of the MCP-1 pathway in the development of vein graft...article 2006
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Manders, R.J. (author), Koopman, R. (author), Sluijsmans, W.E. (author), van den Berg, R. (author), Verbeek, K. (author), Saris, W.H. (author), Wagenmakers, A.J. (author), van Loon, L.J. (author), TNO Kwaliteit van Leven (author)This study examined postprandial plasma insulin and glucose responses after co-ingestion of an insulinotropic protein (Pro) hydrolysate with and without additional free leucine with a single bolus of carbohydrate (Cho). Male patients with long-standing Type 2 diabetes (n = 10) and healthy controls (n = 10) participated in 3 trials in which...article 2006
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Wang, C. (author), Chou, Y.K. (author), Rich, C.M. (author), Link, J.M. (author), Afentoulis, M.E. (author), van Noort, J.M. (author), Wawrousek, E.F. (author), Offner, H. (author), van den Bark, A.A. (author), TNO Kwaliteit van Leven (author)Alpha B-crystallin (αB) is a small heat shock protein that is strongly up-regulated in multiple sclerosis (MS) brain tissue, and can induce strong T cell responses. Assessing a potential encephalitogenic function for αB protein in MS and experimental autoimmune encephalomyelitis (EAE) has been challenging due to its ubiquitous expression that...article 2006
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Schaafsma, G. (author), TNO Kwaliteit van Leven (author)Loss of muscle mass as a consequence of changes in protein metabolism during periods of catabolic stress is a serious complication in a variety of conditions. These conditions are weight loss programs, sarcopenia in the elderly and several clinical states. It appears from many studies that improved protein nutrition by ingestion of high-quality...article 2006
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TNO Kwaliteit van Leven TNO Voeding (author), Ozimek, L.K. (author), Kralj, S. (author), Kaper, T. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author)Bacterial fructansucrase enzymes belong to glycoside hydrolase family 68 and catalyze transglycosylation reactions with sucrose, resulting in the synthesis of fructooligosaccharides and/or a fructan polymer. Significant differences in fructansucrase enzyme product specificities can be observed, i.e. in the type of polymer (levan or inulin)...article 2006
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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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Hoeksma, M. (author), van Rijn, M. (author), Verkerk, P.H. (author), Bosch, A.M. (author), Mulder, M.F. (author), de Klerk, J.B.C. (author), de Koning, T.J. (author), Rubio-Gozalbo, E. (author), de Vries, M. (author), Sauer, P.J.J. (author), van Spronsen, F.J. (author), TNO Preventie en Gezondheid (author)In a previous study, Dutch children with phenylketonuria (PKU) were found to be slightly shorter than their healthy counterparts. In the literature, it has been hypothesized that a higher protein intake is necessary to optimize growth in PKU patients. The study aimed to investigate whether protein intake (total, natural and protein substitute)...article 2005
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Verhoef, P. (author), van Vliet, T. (author), Olthof, M.R. (author), Katan, M.B. (author), TNO Kwaliteit van Leven (author)Background: A high plasma concentration of total homocysteine (tHcy) is associated with increased risk of cardiovascular disease. A high protein intake and hence a high intake of methionine-the sole dietary precursor of homocysteine-may raise plasma tHcy concentrations. Objectives: We studied whether high intake of protein increases plasma...article 2005
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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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Koppelman, S.J. (author), de Jong, G.A.H. (author), de Laaper-Ertmann, M. (author), Peeters, K.A.B.M. (author), Knulst, A.C. (author), Hefle, S.L. (author), Knol, E.F. (author), TNO Kwaliteit van Leven (author)Background: IgE-binding peanut proteins smaller than 15 kDa were previously identified as potential allergens in the majority of our peanut allergic population. Objective: To characterize the novel allergen in order to determine whether it was similar to one of the thus far identified recombinant peanut allergens (Ara h 1-7). Methods: An IgE...article 2005