- document
-
Farmer, P.B. (author), Sepai, O. (author), Lawrence, R. (author), Autrup, H. (author), Nielsen, P.S. (author), Baan, R.A. (author), van Delft, J.H.M. (author), Steenwinkel, M.J.S.T. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)A coordinated study was carried out on the development, evaluation and application of biomonitoring procedures for populations exposed to environmental genotoxic pollutants. The procedures used involved both direct measurement of DNA or protein damage (adducts) and assessment of secondary biological effects (mutation and cytogenetic damage)....article 1996
- document
-
Hoffer, M.J.V. (author), Niththyananthan, S. (author), Naoumova, R.P. (author), Kibirige, M.S. (author), Frants, R.R. (author), Havekes, L.M. (author), Thompson, G.R. (author), Gaubius Instituut TNO (author)Apolipoprotein E (apoE) is one of the major protein constituents of chylomicron and very low density lipoprotein (VLDL) remnants and plays a central role as a ligand in the receptor-mediated uptake of these particles by the liver. Here we describe a new variant of apoE, apoE1-Hammersmith, which is associated with dominantly expressed type III...article 1996
- document
-
Rompelberg, C.J.M. (author), Vogels, J.T.W.E. (author), de Vogel, N. (author), Bruijntjes-Rozier, G.C.D.M. (author), Stenhuis, W.H. (author), Bogaards, J.J.P. (author), Verhagen, H. (author), TNO Voeding (author)1. In order to study the antigenotoxic potential of eugenol in humans, ten healthy non-smoking males ingested a daily amount of 150 mg eugenol or the placebo for seven consecutive days. After a washout period of one week, groups ingesting eugenol or the placebo were crossed and received the other treatment for seven consecutive days. 2. On days...article 1996
- document
-
Rompelberg, C.J.M. (author), Evertz, S.J.C.J. (author), Bruijntjes-Rozier, G.C.D.M. (author), van den Heuvel, P.D. (author), Verhagen, H. (author), TNO Voeding (author)The influence of in vivo treatment with eugenol on established mutagens was studied to determine whether eugenol has antigenotoxic potential. The effects of eugenol in rats was investigated in the unscheduled DNA synthesis (UDS) assay with established mutagens and the Salmonella typhimurium mutagenicity assay. In addition, the effect of in vitro...article 1996
- document
-
Koopman-Esseboom, C. (author), Weisglas-Kuperus, N. (author), de Ridder, M.A.J. (author), van der Paauw, C.G. (author), Tuinstra, L.G.M.T. (author), Sauer, P.J.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Objective. To evaluate the effects of in utero and lactational exposure to polychlorinated biphenyls (PCBs) and dioxins on the mental and psychomotor development of infants. Design. Prenatal PCB exposure was estimated from the levels in maternal plasma during the last month of pregnancy. Postnatal PCB and dioxin exposure of breastfed infants was...article 1996
- document
-
Hopman-Rock, M. (author), Odding, E. (author), Hofman, A. (author), Kraaimaat, F.W. (author), Bijlsma, J.W.J. (author), TNO Preventie en Gezondheid (author)Objective. To determine physical and psychosocial disability in subjects aged 55 to 74 years living in the community, in relation to pain in the hip and/or knee, and to explore the relationships between pain, physical and psychosocial disability, and selected background variables. Methods. A subsample from a community based study on pain,...article 1996
- document
-
de Maat, M.P.M. (author), Arnold, A.E.R. (author), van Buuren, S. (author), Wilson, J.H.P. (author), Kluft, C. (author), Gaubius Instituut TNO (author)Elevated plasma fibrinogen levels are associated with an increased risk for cardiac events. Ticlopidine is a drug that inhibits the ADP-induced aggregation of blood platelets and it also has been described that ticlopidine can decrease the plasma fibrinogen level in patients with vascular diseases. The mechanism of this decrease has not yet been...article 1996
- document
- Verloove-Vanhorick, S.P. (author), TNO Preventie en Gezondheid (author) article 1996
- document
-
Slomp, J. (author), de Gittenberger - Groot, A.C. (author), van Munsteren, J.C. (author), Huysmans, H.A. (author), van Bockel, J.H. (author), van Hinsbergh, V.W.M. (author), Poelmann, R.E. (author), Gaubius Instituut TNO (author)Intimal proliferation is a characteristic feature of arteriosclerosis. Whole vessel wall organ culture systems have been developed to study the early stages of neointima formation. We have cultured a large number of explants of human saphenous vein specimens for several weeks, and have identified the nature of the cells in the newly formed...article 1996
- document
-
Hissink, A.M. (author), Oudshoorn, M.J. (author), van Ommen, B. (author), Haenen, G.R.M.M. (author), van Bladeren, P.J. (author)The oxidative biotransformation of 1, 2-dichlorobenzene (1, 2-DCB) was investigated using hepatic microsomes from male Wistar, Fischer-344 and Sprague-Dawley (SD) rats, phenobarbital (PB)- and isoniazid (ISO) pretreated male Wistar rats and from man. In addition, microsomes from cell lines selectively expressing one cytochrome P450 (P4502E1, 1A1...article 1996
- document
-
Hildebrandt, V.H. (author), Bongers, P.M. (author), Dul, J. (author), van Dijk, F.J.H. (author), Kemper, H.C.G. (author), TNO Preventie en Gezondheid (author)To determine priorities for ergonomic improvements in five maintenance departments of a steel company, a study was carried out to identify groups with a high prevalence of musculoskeletal problems or a high exposure to unfavourable musculoskeletal workload. All workers were asked to complete a standardized questionnaire on musculoskeletal...article 1996
- document
-
Visser, M.J.T. (author), van Lennep, A.C.D. (author), van Bockel, J.H. (author), van Hinsbergh, V.W.M. (author), van der Keur, M. (author), Hermans, J. (author), Gaubius Instituut TNO (author)For in vitro evaluation of functional properties of endothelial cells seeded on synthetic vascular prostheses accurate and reproducible quantification of cells is mandatory. Comparison of these properties with those resulting from other studies requires correlation of the functional parameters to reliably counted cell numbers. The accuracy of...article 1996
- document
-
de Maat, M.P.M. (author), de Bart, A.C.W. (author), Hennis, B.C. (author), Meijer, P. (author), Havelaar, A.C. (author), Mulder, P.G.H. (author), Kluft, C. (author), Gaubius Instituut TNO (author)We compared intraindividual and interindividual variability in the plasma levels of fibrinogen, tissue-type plasminogen activator (TPA) antigen, plasminogen activator inhibitor (PAI) activity, and C-reactive protein (CRP) in 20 healthy, young individuals and 26 patients with stable angina pectoris (AP) who were at higher risk for cardiovascular...article 1996
- document
-
Hendriks, H.F.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Objective and conclusion: An overview is given of our understanding of the uptake and metabolism of retinoids. The mechanisms underlying retinol uptake by organs and tissues are still unsettled. The retinol-binding proteins CRBP I and CRBP II appear to play an essential role in retinyl ester hydrolysis and formation and in retinoic acid...article 1996
- document
-
van Vliet, T. (author), TNO Voeding (author)Objective: To review available information on absorption and further metabolism of different carotenoids in man and to discuss animal models and approaches in the study of carotenoid absorption and metabolism in man. Conclusions: Humans appear to absorb various carotenoids in a relatively non-specific fashion, but absorption kinetics and plasma...article 1996
- document
-
de Jong, E.C. (author), Spanhaak, S. (author), Martens, B.P.M. (author), Kapsenberg, M.L. (author), Penninks, A.H. (author), Wierenga, E.A. (author), TNO Voeding (author)Background: Increasing evidence indicates a prominent role of allergen-specific TH2 cells, with high IL-4 and IL-5 production and low interferon-γ production, in the regulation of IgE and eosinophil production in allergic disorders. However, most studies have concentrated on T cells reactive with inhalation allergens, whereas little is known...article 1996
- document
-
Cassee, F.R. (author), Stenhuis, W.S. (author), Groten, J.P. (author), Feron, V.J. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)In vitro studies with human and rat nasal epithelial cells were carried out to investigate the combined toxicity of formaldehyde and acrolein and the role of aldehyde dehydrogenases in this process. These studies showed that the toxic effect of mixtures of aldehydes was additive. In addition, aldehyde dehydrogenases were inhibited by disulfiram...article 1996
- document
-
Soffers, A.E.M.F. (author), Ploemen, J.H.T.M. (author), Moonen, M.J.H. (author), Wobbes, T. (author), van Ommen, B. (author), Vervoort, J. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)Quantitative structure - activity relationships (QSAR's) are described for the rate of conjugation of a series of fluoronitrobenzenes with cytosolic as well as with two major alpha and mu class enzymes of rat and human liver, viz., glutathione S-transferases (GST) 1-1, 3-3, A1-1, and M1a-1a. For all purified enzymes studied, the natural...article 1996
- document
-
de Vries, T.J. (author), Verheijen, J.H. (author), de Bart, A.C.W. (author), Weidle, U.H. (author), Ruiter, D.J. (author), van Muijen, G.N.P. (author), Gaubius Instituut TNO (author)We recently found that the proteins of the proteolytic system of plasminogen activation emerge in late stages of melanocytic tumor progression. A large body of evidence suggests a role for two proteins, the low-density lipoprotein receptor-related protein (LRP)/α2-macroglobulin receptor and its receptor-associated protein (RAP), in the...article 1996
- document
-
Mesland, B.S. (author), Wertheim, A.H. (author), TNO Technische Menskunde (author)A visual illusion is reported which comprises the following: when a monitor with a moving constant velocity grating is swayed in front of a subject, the grating may be perceived as freezing or decelerating on the screen. This percept appears to depend on the magnitude and direction of the retinal grating velocity, relative to that of the moni...article 1996