Searched for: subject:"Flavonoids"
(1 - 20 of 25)

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Minihane, A.M. (author), Vinoy, S. (author), Russell, W.R. (author), Baka, A. (author), Roche, H.M. (author), Tuohy, K.M. (author), Teeling, J.L. (author), Blaak, E.E. (author), Fenech, M. (author), Vauzour, D. (author), McArdle, H.J. (author), Kremer, B.H.A. (author), Sterkman, L. (author), Vafeiadou, K. (author), Benedetti, M.M. (author), Williams, C.M. (author), Calder, P.C. (author)
The importance of chronic low-grade inflammation in the pathology of numerous age-related chronic conditions is now clear. An unresolved inflammatory response is likely to be involved from the early stages of disease development. The present position paper is the most recent in a series produced by the International Life Sciences Institute's...
article 2015
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Simons, C.C.J.M. (author), Hughes, L.A.E. (author), Arts, I.C.W. (author), Goldbohm, R.A. (author), van den Brandt, P.A. (author), Weijenberg, M.P. (author), TNO Kwaliteit van Leven (author)
Dietary flavonoids are hypothesized to be protective against colorectal cancer, yet findings have been inconsistent. We examined the association of dietary flavonol, flavone and catechin intake with colorectal cancer endpoints within the Netherlands Cohort Study (NLCS). In addition, we explored whether body mass index (BMI) may be an effect...
article 2009
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Schutte, M.E. (author), Boersma, M.G. (author), Verhallen, D.A.M. (author), Groten, J.P. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author)
This study describes and kinetically models the effect of flavonoid mixtures on PhIP transport through Caco-2 monolayers. Previously it was shown that quercetin, luteolin, naringenin and myricetin increase the apical to basolateral PhIP transport in Caco-2 monolayers. In this study, apigenin was shown to exert a similar effect with an apparent...
article 2008
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Bansal, S. (author), Gaspari, M. (author), Raj, H.G. (author), Kumar, A. (author), Cuda, G. (author), Verheij, E. (author), Tyagi, Y.K. (author), Ponnan, P. (author), Rastogi, R.C. (author), Parmar, V.S. (author), TNO Kwaliteit van Leven (author)
Our earlier investigations identified acetoxy drug: protein transacetylase (TAase), a unique enzyme in the endoplasmic reticulum (ER) catalyzing the transfer of acetyl groups from polyphenolic acetates (PA) to certain functional proteins. Recently we have established the identity of TAase with ER protein calreticulin (CR) and subsequently...
article 2008
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van Zanden, J.J. (author), van der Woude, H. (author), Vaessen, J. (author), Usta, M. (author), Wortelboer, H.M. (author), Cnubben, N.H.P. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author)
The present study characterises the effect of phase II metabolism, especially methylation and glucuronidation, of the model flavonoid quercetin on its capacity to inhibit human MRP1 and MRP2 activity in Sf9 inside-out vesicles. The results obtained reveal that 3′-O-methylation does not affect the MRP inhibitory potential of quercetin. However, 4...
article 2007
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Gao, K. (author), Xu, A. (author), Krul, C.A.M. (author), Venema, K. (author), Liu, Y. (author), Niu, Y. (author), Lu, J. (author), Bensoussan, L. (author), Seeram, N.P. (author), Heber, D. (author), Henning, S.M. (author), TNO Kwaliteit van Leven (author)
Dietary flavonoids are poorly absorbed from the gastrointestinal tract. Colonic bacteria convert flavonoids into smaller phenolic acids (PA), which can be absorbed into the circulation and may contribute to the chemopreventive activity of the parent compounds. The purpose of our study was to determine whether flavonoids from green and black tea ...
article 2006
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Boerboom, A.M.J.F. (author), Vermeulen, M. (author), van der Woude, H. (author), Bremer, B.I. (author), Lee-Hilz, Y.Y. (author), Kampman, E. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), Aarts, J.M.M.J.G. (author), TNO Kwaliteit van Leven (author)
The electrophile-responsive element (EpRE) is a transcriptional enhancer involved in cancer-chemoprotective gene expression modulation by certain food components. Two stably transfected luciferase reporter cell lines were developed, EpRE(hNQO1)-LUX and EpRE(mGST-Ya)-LUX, based on EpRE sequences from the human NAD(P)H:quinone oxidoreductase ...
article 2006
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Rein, D. (author), Schijlen, E. (author), Kooistra, T. (author), Herbers, K. (author), Verschuren, L. (author), Hall, R. (author), Sonnewald, U. (author), Bovy, A. (author), Kleemann, R. (author), TNO Kwaliteit van Leven TNO Voeding (author)
The increased consumption of fruits and vegetables is associated with reduced cardiovascular disease. The molecular basis of this health effect is not fully understood, yet dietary flavonoids are thought to play an important role. Genetic engineering has enabled us to overexpress specific flavonoids (flavones and flavonols) in tomato fruit....
article 2006
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Schutte, M.E. (author), Freidig, A.P. (author), van de Sandt, J.J.M. (author), Alink, G.M. (author), Rietjens, I.M.C.M. (author), Groten, J.P. (author), TNO Kwaliteit van Leven (author)
The present study describes the effect of different flavonoids on the absorption of the pro-carcinogen PhIP through Caco-2 monolayers and the development of an in silico model describing this process taking into account passive diffusion and active transport of PhIP. Various flavonoids stimulated the apical to basolateral PhIP transport. Using...
article 2006
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Brand, W. (author), Schutte, M.E. (author), Williamson, G. (author), van Zanden, J.J. (author), Cnubben, N.H.P. (author), Groten, J.P. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author)
The transcellular transport of ingested food ingredients across the intestinal epithelial barrier is an important factor determining bioavailability upon oral intake. This transcellular transport of many chemicals, food ingredients, drugs or toxic compounds over the intestinal epithelium can be highly dependent on the activity of membrane bound...
article 2006
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de Boer, V.C.J. (author), van Schothorst, E.M. (author), Dihal, A.A. (author), van der Woude, H. (author), Arts, I.C.W. (author), Rietjens, I.M.C.M. (author), Hollman, P.C.H. (author), Keijer, J. (author), TNO Kwaliteit van Leven (author)
Dietary quercetin intake is suggested to be health promoting, but this assumption is mainly based on mechanistic studies performed in vitro. Previously, we identified rat lung as a quercetin target tissue. To assess relevant in vivo health effects of quercetin, we analyzed mechanisms of effect in rat lungs of a chronic (41 weeks) 1% quercetin...
article 2006
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Schutte, M.E. (author), van de Sandt, J.J.M. (author), Alink, G.M. (author), Groten, J.P. (author), Rietjens, I.M.C.M. (author), TNO Kwaliteit van Leven (author)
The effect of the flavonoid myricetin on the transport of the pro-carcinogen 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) through differentiated Caco-2 monolayers, a model for the intestinal epithelium, is described. Myricetin causes an increase of the transport of PhIP from the apical to the basolateral compartment. This effect was...
article 2006
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van Zanden, J.J. (author), de Mul, A. (author), Wortelboer, H.M. (author), Usta, M. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), Cnubben, N.H.P. (author), TNO Kwaliteit van Leven (author)
In the present study, the effects of myricetin on either MRP1 or MRP2 mediated vincristine resistance in transfected MDCKII cells were examined. The results obtained show that myricetin can inhibit both MRP1 and MRP2 mediated vincristine efflux in a concentration dependent manner. The IC50 values for cellular vincristine transport inhibition by...
article 2005
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de Boer, V.C.J. (author), Dihal, A.A. (author), van der Woude, H. (author), Arts, I.C.W. (author), Wolffram, S. (author), Alink, G.M. (author), Rietjens, I.M.C.M. (author), Keijer, J. (author), Hollman, P.C.H. (author), TNO Kwaliteit van Leven (author)
Quercetin is a dietary polyphenolic compound with potentially beneficial effects on health. Claims that quercetin has biological effects are based mainly on in vitro studies with quercetin aglycone. However, quercetin is rapidly metabolized, and we have little knowledge of its availability to tissues. To assess the long-term tissue distribution...
article 2005
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Wang, M. (author), Lamers, R.J.A.N. (author), Korthout, H.A.A.J. (author), van Nesselrooij, J.H.J. (author), Witkamp, R.F. (author), van der Heijden, R. (author), Voshol, P.J. (author), Havekes, L.M. (author), Verpoorte, R. (author), van der Greef, J. (author), TNO Kwaliteit van Leven (author)
The introduction of the concept of systems biology, enabling the study of living systems from a holistic perspective based on the profiling of a multitude of biochemical components, opens up a unique and novel opportunity to reinvestigate natural products. In the study of their bioactivity, the necessary reductionistic approach on single active...
article 2005
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van Zanden, J.J. (author), Wortelboer, H.M. (author), Bijlsma, S. (author), Punt, A. (author), Usta, M. (author), Bladeren, P.J.V. (author), Rietjens, I.M.C.M. (author), Cnubben, N.H.P. (author), TNO Kwaliteit van Leven (author)
In the present study, the effects of a large series of flavonoids on multidrug resistance proteins (MRPs) were studied in MRP1 and MRP2 transfected MDCKII cells. The results were used to define the structural requirements of flavonoids necessary for potent inhibition of MRP1- and MRP2-mediated calcein transport in a cellular model. Several of...
article 2005
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van Zanden, J.J. (author), Geraets, L. (author), Wortelboer, H.M. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author), Cnubben, N.H.P. (author), TNO Voeding (author)
The objective of this study was to investigate the structural requirements necessary for inhibition of glutathione S-transferase P1-1 (GSTP1-1) and GS-X pump (MRP1 and MRP2) activity by structurally related flavonoids, in GSTP1-1 transfected MCF7 cells (pMTG5). The results reveal that GSTP1-1 activity in MCF7 pMTG5 cells can be inhibited by some...
article 2004
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Krul, C.A.M. (author), Zeilmaker, M.J. (author), Schothorst, R.C. (author), Havenaar, R. (author), TNO Voeding (author)
Human exposure to carcinogenic N-alkylnitrosamines can occur exogenously via food consumption or endogenously by formation of these compounds through nitrosation of amine precursors. Information on the intragastric formation of NDMA from complex mixtures of precursors and inhibitors in humans is not available. In this study the formation of N...
article 2004
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Verbeek, R. (author), Plomp, A.C. (author), van Tol, E.A.F. (author), van Noort, J.M. (author)
Plant-derived flavonoids are inhibitors of various intracellular processes, notably phosphorylation pathways, and potential inhibitors of cellular autoimmunity. In this study, the inhibiting effects of various flavonoids on antigen-specific proliferation and interferon-gamma (IFN-γ) production by human and murine autoreactive T cells were...
article 2004
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van Zanden, J.J. (author), Hamman, O.B. (author), van Iersel, M.L.P.S. (author), Boeren, S. (author), Cnubben, N.H.P. (author), Lo Bello, M. (author), Vervoort, J. (author), van Bladeren, P.J. (author), Rietjens, I.M.C.M. (author)
In the present study, the inhibition of human glutathione S-transferase P1-1 (GSTP1-1) by the flavonoid quercetin has been investigated. The results show a time- and concentration-dependent inhibition of GSTP1-1 by quercetin. GSTP1-1 activity is completely inhibited upon 1 h incubation with 100 μM quercetin or 2 h incubation with 25 μM quercetin...
article 2003
Searched for: subject:"Flavonoids"
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