Searched for: subject:"Liver%5C+metabolism"
(1 - 15 of 15)
document
van Groen, B.D. (author), Krekels, E.H.J. (author), Mooij, M.G. (author), van Duijn, E. (author), Vaes, W.H.J. (author), Windhorst, A.D. (author), van Rosmalen, J. (author), Hartman, S.J.F. (author), Hendrikse, N.H. (author), Koch, B.C.P. (author), Allegaert, K. (author), Tibboel, D. (author), Knibbe, C.A.J. (author), de Wildt, S.N. (author)
Midazolam is metabolized by the developmentally regulated intestinal and hepatic drug-metabolizing enzyme cytochrome P450 (CYP) 3A4/5. It is frequently administered orally to children, yet knowledge is lacking on the oral bioavailability in term neonates up until 1 year of age. Furthermore, the dispositions of the major metabolites 1-OH...
article 2021
document
Treijtel, N. (author), Eijkeren, J.C.H.v. (author), Nijmeijer, S. (author), van der Greef de - Sandt, I.C.J. (author), Freidig, A.P. (author), TNO Kwaliteit van Leven (author)
The metabolism and active transport of ritonavir and saquinavir were studied using sandwich-cultured rat hepatoyctes and rat liver microsomes. For ritonavir four comparable metabolites were observed in the sandwich-culture and in microsomes. For saquinavir eight metabolites were observed in sandwich-culture and 14 different metabolites in...
article 2009
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Kienhuis, A.S. (author), van de Poll, M.C.G. (author), Wortelboer, H. (author), van Herwijnen, M. (author), Gottschalk, R. (author), de Jong, C.H.C. (author), Boorsma, A. (author), Paules, R.S. (author), Kleinjans, J.C.S. (author), Stierum, R.H. (author), van Delft, J.H.M. (author), TNO Kwaliteit van Leven (author)
The frequent use of rodent hepatic in vitro systems in pharmacological and toxicological investigations challenges extrapolation of in vitro results to the situation in vivo and interspecies extrapolation from rodents to humans. The toxicogenomics approach may aid in evaluating relevance of these model systems for human risk assessment by direct...
article 2009
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Heijboer, A.C. (author), van den Hoek, A.M. (author), Parlevliet, E.T. (author), Havekes, L.M. (author), Romijn, J.A. (author), Pijl, H. (author), Corssmit, E.P.M. (author), TNO Kwaliteit van Leven (author)
Aims/hypothesis: This study was conducted to evaluate the effects of ghrelin on insulin's capacity to suppress endogenous glucose production and promote glucose disposal in mice. To establish whether the growth hormone secretagogue (GHS) receptor can mediate the putative effect of ghrelin on the action of insulin, we also determined the...
article 2006
document
Espirito Santo, S.M.S. (author), Pires, N.M.M. (author), Boesten, L.S.M. (author), Gerritsen, G. (author), Bovenschen, N. (author), van Dijk, K.W. (author), Jukema, J.W. (author), Princen, H.M.G. (author), Bensadoun, A. (author), Li, W.P. (author), Herz, J. (author), Havekes, L.M. (author), van Vlijmen, B.J.M. (author), Gaubius Instituut TNO (author)
The low-density lipoprotein (LDL) receptor-related protein (LRP) has a well-established role in the hepatic removal of atherogenic apolipoprotein E (APOE)-rich remnant lipoproteins from plasma. In addition, LRP recognizes multiple distinct pro- and antiatherogenic ligands in vitro. Here, we investigated the role of hepatic LRP in atherogenesis...
article 2004
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Renwick, A.B. (author), Ball, S.E. (author), Tredger, J.M. (author), Price, R.J. (author), Walters, D.G. (author), Kao, J. (author), Scatina, J.A. (author), Lake, B.G. (author), TNO Voeding (author)
The effect of cimetidine on the metabolism of zaleplon (ZAL) in human liver subcellular fractions and precision-cut liver slices was investigated. 2. ZAL was metabolized to a number of products including 5-oxo-ZAL (M2), which is known to be formed by aldehyde oxidase, N-desethyl-ZAL (DZAL), which is known to be formed by CYP3A forms, and N...
article 2002
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Anderson, D. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO BIBRA (author)
Butadiene (BD) and its 2-methyl analogue, isoprene, have been extensively studied in animals and BD in population studies. Both chemicals are metabolised by liver cytochrome P450 dependent monogenases to monoepoxide and diepoxide intermediates. The diepoxide intermediates of both compounds were mutagenic in Salmonella typhimurium. However,...
article 2001
document
Izeboud, C.A. (author), Monshouwer, M. (author), Witkamp, R.F. (author), van Miert, A.S.J. (author), TNO Voeding (author)
During infection and inflammation drug disposition and hepatic metabolism are markedly affected in mammals. Pro-inflammatory mediators play an important role in the suppression of (cytochrome-P450-mediated) drug metabolism. Inflammatory mediators like cytokines, nitric oxide (NO), reactive oxygen species (ROS) and eicosanoids are released by...
article 2000
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Bogaards, J.J.P. (author), Venekamp, J.C. (author), Salmon, F.G.C. (author), van Bladeren, P.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
In the present study, the enzymatic conjugation of the isoprene monoepoxides 3,4 epoxy-3-methyl-1-butene (EPOX-I) and 3,4-epoxy-2-methyl-1-butene (EPOX-II) with glutathione was investigated, using purified glutathione S-transferases (GSTs) of the α, μ, π and θ-class of rat and man. HPLC analysis of incubations of EPOX-I and EPOX-II with [35S...
article 1999
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van der Kaaden, M.E. (author), Rijken, D.C. (author), van Berkel, T.J.C. (author), Kuiper, J. (author), Gaubius Instituut TNO (author)
article 1998
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van Puymbroeck, M. (author), Kuilman, M.E.M. (author), Maas, R.F.M. (author), Witkamp, R.F. (author), Leyssens, T. (author), van der Zande, D.J.M. (author), Gelan, J. (author), Raus, J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Current veterinary residue analysis mainly focuses on the monitoring of residues of the administered parent compound. However, it is possible that larger amounts of metabolites are excreted and that they can have a prolonged excretion period. In order to unravel specific metabolic steps and to identify possible biological markers, two in vitro...
article 1998
document
Kaptein, A. (author), Neele, D.M. (author), Twisk, J. (author), Hendriks, H.F.J. (author), Kooistra, T. (author), Princen, H.M.G. (author), Gaubius Instituut TNO (author)
We showed previously that retinoids stimulate apolipoprotein A-I (apoA- I) synthesis in cultured cynomolgus hepatocytes only after a 24-h lag phase. Here we report on the biochemical background of the slow response, the requirement for high retinoic acid concentrations, and the involvement of different retinoid receptors. The time course of the...
article 1997
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Jong, M.C. (author), Dahlmans, V.E.H. (author), van Gorp, P.J.J. (author), Breuer, M.L. (author), Mol, M.J.T.M. (author), van der Zee, A. (author), Frants, R.R. (author), Hofker, M.H. (author), Havekes, L.M. (author), Gaubius Instituut TNO (author)
Transgenic mice overexpressing human APOE*3Leiden are highly susceptible to diet-induced hyperlipoproteinemia and atherosclerosis due to a defect in hepatic uptake of remnant lipoproteins. In addition to the human APOE*3Leiden gene, these mice carry the human APOC1 gene (APOE*3Leiden- C1). To investigate the possible effect of simultaneous...
article 1996
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Twisk, J. (author), Hoekman, M.F.M. (author), Mager, W.H. (author), Moorman, A.F.M. (author), de Boer, P.A.J. (author), Scheja, L. (author), Princen, H.M.G. (author), Gebhardt, R. (author), Instituut voor Verouderings- en Vaatziekten Onderzoek TNO (author)
We investigated the lobular localization and molecular level of expression of cholesterol 7α-hydroxylase and sterol 27-hydroxylase, two key enzymes in bile acid synthesis, in isolated periportal and pericentral hepatocytes and by in situ hybridization of rat liver. Enzyme activity, mRNA, and gene transcription of cholesterol 7α-hydroxylase were...
article 1995
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Kuiper, J. (author), Rijken, D.C. (author), Munk, G.A. (author), van Berkel, T.J. (author), Gaubius instituut Instituut voor verouderings- en vaatziekten onderzoek TNO (author)
The plasma clearance and the interaction of high (HMW) and low (LMW) molecular weight single-chain urokinase-type plasminogen activator (scu-PA) with rat liver cells was determined. 125I-Labeled HMW- and LMW-scu-PA were rapidly cleared from plasma with a half-life of 0.45 min and a maximal liver uptake of 55% of the injected dose. Liver uptake...
article 1992
Searched for: subject:"Liver%5C+metabolism"
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