Searched for: subject:"Male"
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Walczak, A.P. (author), Hendriksen, P.J.M. (author), Woutersen, R.A. (author), van der Zande, M. (author), Undas, A.K. (author), Helsdingen, R. (author), van den Berg, H.H.J. (author), Rietjens, I.M.C.M. (author), Bouwmeester, H. (author)
The likelihood of oral exposure to nanoparticles (NPs) is increasing, and it is necessary to evaluate the oral bioavailability of NPs. In vitro approaches could help reducing animal studies, but validation against in vivo studies is essential. Previously, we assessed the translocation of 50 nm polystyrene NPs of different charges (neutral,...
article 2015
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Dihal, A.A. (author), van der Woude, H. (author), Hendriksen, P.J.M. (author), Charif, H. (author), Dekker, L.J. (author), IJsselstijn, L. (author), de Boer, V.C.J. (author), Alink, G.M. (author), Burgers, P.C. (author), Rietjens, I.M.C.M. (author), Woutersen, R.A. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author), KvL (author)
Quercetin has been shown to act as an anticarcinogen in experimental colorectal cancer (CRC). The aim of the present study was to characterize transcriptome and proteome changes occurring in the distal colon mucosa of rats supplemented with 10 g quercetin/kg diet for 11 wk. Transcriptome data analyzed with Gene Set Enrichment Analysis showed...
article 2008
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Dihal, A.A. (author), de Boer, V.C.J. (author), van der Woude, H. (author), Tilburgs, C. (author), Bruijntjes, J.P. (author), Alink, G.M. (author), Rietjens, I.M.C.M. (author), Woutersen, R.A. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author)
The effect of the flavonoid quercetin and its conjugate rutin was investigated on (biomarkers of) colorectal cancer (CRC). Male F344 rats (n = 42/group) were fed 0, 0.1, 1, or 10 g quercetin/kg diet or 40 g rutin/kg diet. Two wk after initial administration of experimental diets, rats were given 2 weekly subcutaneous injections with 15 mg/kg...
article 2006
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van Erk, M.J. (author), Krul, C.A.M. (author), Caldenhoven, E. (author), Stierum, R.H. (author), Peters, W.H. (author), Woutersen, R.A. (author), van Ommen, B. (author), TNO Kwaliteit van Leven TNO Voeding (author)
Interest in mechanisms of colon cancer prevention by food compounds is strong and research in this area is often performed with cultured colon cancer cells. In order to assess utility for screening of potential cancer-preventive (food) compounds, expression profiles of 14 human cell lines derived from colonic tissue were measured using cDNA...
article 2005
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Lina, B.A.R. (author), Woutersen, R.A. (author), Bruijntjes, J.P. (author), van Benthem, J. (author), van den Berg, J.A.H. (author), Monbaliu, J. (author), Thoolen, B.J.J.M. (author), Beems, R.B. (author), van Kreijl, C.F. (author), TNO Voeding (author)
As part of the international evaluation program coordinated by ILSI/HESI, the potential of DNA repair deficient Xpa-/- mice and the double knockout Xpa-/-.p53+/- mice for short term carcinogenicity assays was evaluated. For comparison also wild-type C57BL/6 mice (WT) were included in these studies. Four test compounds were administered to groups...
article 2004
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Appel, M.J. (author), Woutersen, R.A. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
The present study was performed to investigate the influence of fish oil on the genotoxic effects of azaserine, using the formation of micronucleated erythrocytes as a measure for the degree of initiating potency and the number and size of putative preneoplastic pancreatic atypical acinar cell foci (AACF) as a measure for the actual number of...
article 2004
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Arts, J.H.E. (author), Muijser, H. (author), Appel, M.J. (author), Kuper, C.F. (author), Bessems, J.G.M. (author), Woutersen, R.A. (author), TNO Voeding (author)
The subacute oral and inhalation toxicity of furfural vapour was studied in Fischer 344 rats to investigate whether route-to-route extrapolation could be employed to derive the limit value for inhalation exposure from oral toxicity data. Groups of 5 rats per sex were treated by gavage daily for 28 days at dose levels of 6-192 mg/kg bw/day, or...
article 2004
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Wijnands, M.V.W. (author), van Erk, M.J. (author), Doornbos, R.P. (author), Krul, C.A.M. (author), Woutersen, R.A. (author)
The effects of different dietary compounds on the formation of aberrant crypt foci (ACF) and colorectal tumours and on the expression of a selection of genes were studied in rats. Azoxymethane-treated male F344 rats were fed either a control diet or a diet containing 10% wheat bran (WB), 0.2% curcumin (CUR), 4% rutin (RUT) or 0.04% benzyl...
article 2004
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Rothbarth, J. (author), Woutersen, R.A. (author), Sparidans, R.W. (author), van de Velde, C.J.H. (author), Mulder, G.J. (author)
The optimum conditions (duration and concentration) of a fixed dose, intra-arterial melphalan infusion in relation to its antitumor effect and toxicity in the liver were investigated in a rat colon tumor model (CC531) of liver metastases. We studied the difference in tumor and liver uptake, as well as antitumor effect and hepatotoxicity after 5-...
article 2003
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Arts, J.H.E. (author), Mojet, J. (author), van Gemert, L.J. (author), Emmen, H.H. (author), Lammers, J.H.C.M. (author), Marquart, J. (author), Woutersen, R.A. (author), Feron, V.J. (author), TNO Voeding (author)
Studies on the irritative effects of acetone vapor in humans and experimental animals have revealed large differences in the lowest acetone concentration found to be irritative to the respiratory tract and eyes. This has brought on much confusion in the process of setting occupational exposure limits for acetone. A literature survey was carried...
article 2002
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Appel, M.J. (author), Kuper, C.F. (author), Woutersen, R.A. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
A study was performed to provide data on the disposition, accumulation and toxicity of sodium iron EDTA in comparison with iron (II) sulfate in rats on administration via the diet for 31 and 61 days. Clinical signs, body weights, food consumption, food conversion efficiency, hematology, clinical chemistry and pathology of selected organs were...
article 2001
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Wijnands, M.V.W. (author), Schoterman, H.C. (author), Bruijntjes, J.P. (author), Hollanders, V.M.H. (author), Woutersen, R.A. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
The aim of the present study was to investigate the effects of galacto-oligosaccharides (GOS, Elix'or) on the development of aberrant crypt foci (ACF) and colorectal tumours in rats treated with azoxymethane (AOM). Two groups of 102 male Fischer 344 rats were injected twice with AOM to induce colorectal tumours, and fed diets containing either a...
article 2001
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Woutersen, R.A. (author), Appel, M.J. (author), van Garderen-Hoetmer, A. (author), Wijnands, M.V.W. (author), TNO Voeding (author)
Epidemiologic investigations have suggested a relationship between dietary fat intake and various types of cancer incidences. Furthermore, epidemiologic studies as well as studies with animal models have demonstrated that not only the amount but also the type of fat consumed is important. At present, the mechanism by which dietary fat modulates...
article 1999
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Woutersen, R.A. (author), Appel, M.J. (author), Garderen van -Hoetmer, A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Previously performed short-term (4-month) studies demonstrated that vitamins C and E, β-carotene and selenium modulate growth of early putative preneoplastic acinar lesions induced in rat pancreas by azaserine. The present paper summarizes the results of long-term studies performed with azaserine-treated rats maintained on diets high in either β...
article 1999
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Wijnands, M.V.W. (author), Appel, M.J. (author), Hollanders, V.M.H. (author), Woutersen, R.A. (author), TNO Voeding (author)
The objective of this experiment was to compare the effects of diets with either a non-fermentable fibre source (cellulose) or a fermentable fibre source [galacto-oligosaccharide (GOS)], combined with different levels of dietary fat, on the development of colorectal cancer. Male Wistar rats were fed AIN76-based diets with either a low or high...
article 1999
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Kirev, T. (author), Woutersen, R.A. (author), Kiril, A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The effects of a diet enriched with 25% raw soya bean flour (RSF) on the pancreas and on the avian retrovirus Pts 56-induced pancreatic carcinogenesis in guinea fowl were studied. It has been shown that prolonged RSF feeding of new-hatched virus-infected and uninfected guinea fowl-poults induced enlargement of the pancreas, which was less...
article 1999
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Rijnkels, J.M. (author), Hollanders, V.M.H. (author), Woutersen, R.A. (author), Koeman, J.H. (author), Alink, G.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The potential inhibitory effects of a vegetables-fruit mixture on the initiation and promotion phases of azoxymethane-induced colorectal carcinogenesis were examined in rats fed low- or high-fat diets. Rats were fed low-fat diets (20 energy percent, Diets A and B) or high-fat diets (40 energy percent, Diets C and D), supplemented with a...
article 1998
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Rijnkels, J.M. (author), Hollanders, V.H.M. (author), Woutersen, R.A. (author), Koeman, J.H. (author), Alink, G.M. (author), TNO Voeding (author)
The modulation of a vegetables-fruit mixture on N-methyl-N'-nitro-N- nitrosoguanidine (MNNG)-induced colorectal carcinogenesis was studied in rats maintained on a low- or a high-fat diet. Far this purpose, 120 rats received a semisynthetic diet without (Groups A and C) or with a vegetables-fruit mixture (19.5% wt/wt, Groups B and D) for 35 weeks...
article 1997
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Visser, C.J.T. (author), van Garderen-Hoetmer, A. (author), Klijn, J.G.M. (author), Foekens, J.A. (author), Woutersen, R.A. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
In a previous short-term study (4 months) we found that Sandostatin, when administered prophylactically, inhibited growth of putative pre-neoplastic ductular lesions induced in hamster pancreas by N-nitrosobis(2-oxopropyl)amine (BOP), but not of acinar lesions induced in rat pancreas by azaserine. The present long-term (12 months) study was...
article 1996
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Jonker, D. (author), Woutersen, R.A. (author), Feron, V.J. (author), TNO Voeding (author)
The toxicity of mixtures of chemicals with the same target organ was examined in rats using nephrotoxicants with similar or dissimilar modes of action. In a 4-wk feeding study, lysinoalanine, mercuric chloride, hexachloro-1,3-butadiene and d-limonene, each affecting renal proximal tubular cells but through different modes of action, were...
article 1996
Searched for: subject:"Male"
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