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Verhoeckx, K.C.M. (author), Korthout, H.A.A.J. (author), van Meeteren-Kreikamp, A.P. (author), Ehlert, K.A. (author), Wang, M. (author), van der Greef, J. (author), Rodenburg, R.J.T. (author), Witkamp, R.F. (author), TNO Kwaliteit van Leven (author)There is a great interest in the pharmacological properties of cannabinoid like compounds that are not linked to the adverse effects of Δ9-tetrahydrocannabinol (THC), e.g. psychoactive properties. The present paper describes the potential immuno-modulating activity of unheated Cannabis sativa extracts and its main non-psychoactive constituent Δ9...article 2006
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Nohynek, G.J. (author), Meuling, W.J.A. (author), Vaes, W.H.J. (author), Lawrence, R.S. (author), Shapiro, S. (author), Schulte, S. (author), Steiling, W. (author), Bausch, J. (author), Gerber, E. (author), Sasa, H. (author), Nau, H. (author), TNO Kwaliteit van Leven (author)Background: Vitamin A is widely used in cosmetic preparations. Given that oral Vitamin A and its metabolites present a potential reproductive risk, the present study investigated the effect of topical Vitamin A on human endogenous plasma levels of Vitamin A and its metabolites. Methods: Two groups of 14 female volunteers of child-bearing age...article 2006
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Poucke, C.V. (author), Dumoulin, F. (author), Yakkundi, S. (author), Situ, C. (author), Elliott, C.T. (author), Grutters, E.M. (author), Verheijen, R. (author), Schilt, R. (author), Eriksson, S. (author), Peteghem, C.V. (author), TNO Kwaliteit van Leven (author)A chemical confirmation method for the identification and quantification of five banned antibacterial growth promoters (AGPs) in animal feed was developed and in-house validated as part of the European Feedstuffs-RADIUS project [1]. To complete the validation process a collaborative trial was performed by eleven laboratories within the European...article 2006
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van der Greef, J. (author), Hankemeier, T. (author), McBurney, R.N. (author), TNO Kwaliteit van Leven (author)Personalized medicine - defined as customized medical care for each patient's unique condition - in the broader context of personalized health, will make significant strides forward when a systems approach is implemented to achieve the ultimate in disease phenotyping and to create novel therapeutics that address system-wide molecular...article 2006
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Jonsson, P. (author), Stenlund, H. (author), Moritz, T. (author), Trygg, J. (author), Sjöström, M. (author), Verheij, E.R. (author), Lindberg, J. (author), Schuppe-Koistinen, I. (author), Antti, H. (author), TNO Kwaliteit van Leven (author)A multivariate strategy for studying the metabolic response over time in urinary GC/MS data is presented and exemplified by a study of drug-induced liver toxicity in the rat. The strategy includes the generation of representative data through hierarchical multivariate curve resolution (H-MCR), highlighting the importance of obtaining resolved...article 2006
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Vermeulen, M. (author), van den Berg, R. (author), Freidig, A.P. (author), van Bladeren, P.J. (author), Vaes, W.H.J. (author), TNO Kwaliteit van Leven (author)A high intake of cruciferous vegetables is associated with a reduced risk of cancer and cardiovascular diseases. This protective effect has been linked to isothiocyanates, enzymatic hydrolysis products of glucosinolates. In this study, the metabolic fate of glucosinolates and isothiocyanates after ingestion of 19 different cruciferous vegetables...article 2006
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Rubingh, C.M. (author), Bijlsma, S. (author), Derks, E.P.P.A. (author), Bobeldijk, I. (author), Verheij, E.R. (author), Kochhar, S. (author), Smilde, A.K. (author), TNO Kwaliteit van Leven (author)Statistical model validation tools such as cross-validation, jack-knifing model parameters and permutation tests are meant to obtain an objective assessment of the performance and stability of a statistical model. However, little is known about the performance of these tools for megavariate data sets, having, for instance, a number of variables...article 2006
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Le Bizec, B. (author), Courant, F. (author), Gaudin, I. (author), Bichon, E. (author), Destrez, B. (author), Schilt, R. (author), Draisci, R. (author), Monteau, F. (author), André, F. (author), TNO Kwaliteit van Leven (author)Boldenone is an androgenic steroid that improves the growth and food conversion in food producing animals. In most countries worldwide, this anabolic steroid is forbidden for meat production. Until recently, the control of its illegal use was based either on 17β-boldenone or 17α-boldenone (its main metabolite in cattle) identification in edible...article 2006
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Oudshoorn, J.H. (author), Lecluse, A.L.Y. (author), van den Berg, R. (author), Vaes, W.H.J. (author), van der Laag, J. (author), Houwen, R.H.J. (author), TNO Kwaliteit van Leven (author)OBJECTIVES: Coenzyme Q10 (CoQ10) is an effective lipophilic antioxidant and protects against lipid peroxidation by scavenging radicals. Patients with cystic fibrosis generally have fat malabsorption; thus, we hypothesized that overall plasma CoQ10 concentration in pediatric patients with cystic fibrosis might be diminished. Because these...article 2006
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- Hertsenberg, S. (author), Brouwer, D. (author), Lurvink, M. (author), Rubingh, C. (author), Rijnders, E. (author), Tielemans, E. (author), TNO Kwaliteit van Leven (author) 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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Dole, P. (author), Feigenbaum, A.E. (author), de la Cruz, C. (author), Pastorelli, S. (author), Paseiro, P. (author), Hankemeier, T. (author), Voulzatis, Y. (author), Aucejo, S. (author), Saillard, P. (author), Papaspyrides, C. (author), TNO Kwaliteit van Leven (author)When plastics are collected for recycling, possibly contaminated articles might be recycled into food packaging, and thus the contaminants might subsequently migrate into the food. Multilayer functional barriers may be used to delay and to reduce such migration. The contribution of the work reported here is to establish reference values (at 40°C...article 2006
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van der Greef, J. (author), Adourian, A. (author), Muntendam, P. (author), McBurney, R.N. (author), TNO Kwaliteit van Leven (author)Too few drug discovery projects generate a marketed drug product, often because preclinical studies fail to predict the clinical experience with a drug candidate. Improving the success of preclinical-to-clinical translation is of paramount importance in optimizing the pharmaceutical value chain. Here, we advance the case for a molecular systems...article 2006
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Coulier, L. (author), Kaal, E. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author)Hyphenation of infrared spectroscopy (IR) to liquid chromatography (LC) has been applied to study chemical changes in poly(bisphenol A)carbonate (PC) as a result of degradation. Especially coupling of LC to FTIR through solvent elimination is a sensitive approach to identify changes in functionality observed in the LC chromatograms as has been...article 2006
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Coulier, L. (author), Kaal, E.R. (author), Hankemeier, Th. (author), TNO Kwaliteit van Leven (author)The hydrolytic degradation of poly(bisphenol A)carbonate (PC) has been characterized by various liquid chromatography techniques. Size exclusion chromatography (SEC) showed a significant decrease in molecular mass as a result of hydrolytic degradation, while 'liquid chromatography at critical conditions' (LC-CC) was very successful for observing...article 2006
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Soffert, A. (author), Pieper, G. (author), Jetten, J. (author), TNO Kwaliteit van Leven (author)Pasteurized whole milk (3% fat) was stored under fluorescent light at 8°C in clear 1 litre polyethylene terephthalate (PET) bottles and three variants of pigmented PET bottles with different light transmittance. Changes in the vitamin content were monitored over a period of 10 days. Milk packed in pigmented PET bottles with the lowest light...article 2006
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Bijlsma, S. (author), Bobeldijk, I. (author), Verheij, E.R. (author), Ramaker, R. (author), Kochhar, S. (author), Macdonald, I.A. (author), van Ommen, B. (author), Smilde, A.K. (author), TNO Kwaliteit van Leven (author)A large metabolomics study was performed on 600 plasma samples taken at four time points before and after a single intake of a high fat test meal by obese and lean subjects. All samples were analyzed by a liquid chromatography-mass spectrometry (LC-MS) lipidomic method for metabolic profiling. A pragmatic approach combining several well...article 2006
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- Jongbloed, H. (author), Jetten, J. (author), Rijk, R. (author), TNO Kwaliteit van Leven (author) 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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Pronk, A. (author), Yu, F. (author), Vlaanderen, J. (author), Tielemans, E. (author), Preller, L. (author), Bobeldijk, I. (author), Deddens, J.A. (author), Latza, U. (author), Baur, X. (author), Heederik, D. (author), TNO Kwaliteit van Leven (author)Objectives: To study inhalation and dermal exposure to hexamethylene diisocyanate (HDI) and its oligomers as well as personal protection equipment (PPE) use during task performance in conjunction with urinary hexamethylene diamine (HDA) in car body repair shop workers and industrial spray painters. Methods: Personal task based inhalation samples...article 2006