Searched for: subject:"isotope"
(1 - 9 of 9)
document
Houben, E. (author), Uchida, Y. (author), Nieuwenhuizen, W.F. (author), de Paepe, K. (author), Vanhaecke, T. (author), Holleran, W.M. (author), Rogiers, V. (author), TNO Kwaliteit van Leven (author)
It has recently become evident that at least five ceramidase (CDase) isoforms are present in human epidermis, and that specifically acidic CDase (aCDase) and alkaline CDase (alkCDase) activities increase during keratinocyte differentiation, and thus might play a pivotal role(s) in permeability barrier function. Prior to investigating their...
article 2007
document
Fox, T.E. (author), van den Heuvel, E.G.H.M. (author), Atherton, C.A. (author), Dainty, J.R. (author), Lewis, D.J. (author), Langford, N.J. (author), Crews, H.M. (author), Luten, J.B. (author), Lorentzen, M. (author), Sieling, F.W. (author), van Aken-Schneyder, P. (author), Hoek, M. (author), Kotterman, M.J.J. (author), van Dael, P. (author), Firweather-Tail, S.J. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author)
Objective: To measure the bioavailability of selenium from cooked and raw fish in humans by estimating and comparing apparent absorption and retention of selenium in biosynthetically labelled fish with labelled selenate and biosynthetically labelled selenium in brewers yeast. Design: The intervention study was a parallel, randomised, reference...
article 2004
document
van de Sandt, J.J.M. (author), Meuling, W.J.A. (author), Elliott, G.R. (author), Cnubben, N.H.P. (author), Hakkert, B.C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
In vitro and in vivo skin absorption of the pesticide propoxur (2-isopropoxyphenyl N-methyl carbamate, commercially Baygon(TM) and Unden(TM); log Po/w 1.56, MW 209.2) was investigated. In vivo studies were performed in rats and human volunteers, applying the test compound to the dorsal skin and the volar aspect of the forearm, respectively. In...
article 2000
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van den Heuvel, E.G.H.M. (author), Schoterman, M.H.C. (author), Muijs, T. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The aim of this study was to investigate whether a product rich in transgalactooligosaccharides (TOS, Elix'or) stimulates true Ca absorption in postmenopausal women. The study was a double-blind, randomized crossover study, consisting of two 9-d treatment periods separated by a 19-d washout period. During the treatment periods, 12 subjects drank...
article 2000
document
van den Heuvel, E.G.H.M. (author), Muijs, T. (author), van Dokkum, W. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Animal studies have indicated that calcium absorption is increased by lactulose, a synthetic disaccharide. Therefore, the influence of lactulose on calcium absorption was measured in postmenopausal women who may benefit from the possible enhancing effect of lactulose on calcium absorption. Twelve postmenopausal women drank 100 ml of water...
article 1999
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van den Heuvel, E.G.H.M. (author), Muys, T. (author), van Dokkum, W. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Background: In rats, nondigestible oligosaccharides stimulate calcium absorption. Recently, this effect was also found in human subjects. Objective: The objective of the study was to investigate whether consumption of 15 g oligofructose/d stimulates calcium absorption in male adolescents. Design: Twelve healthy, male adolescents aged 14-16 y...
article 1999
document
van den Heuvel, E.G.H.M. (author), Schaafsma, G. (author), Muys, T. (author), van Dokkum, W. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The effect of inulin, fructooligosaccharides, and galactooligosaccharides on true intestinal absorption of iron and calcium was measured in men by using double stable-isotope techniques (oral 57Fe and 44Ca and intravenous 58Fe and 48Ca). The incorporation of iron isotopes into erythrocytes and the urinary excretion of calcium isotopes was...
article 1998
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van den Heuvel, E.G.H.M. (author), Muys, T. (author), Pellegrom, H. (author), Bruyntjes, J.P. (author), van Dokkum, W. (author), Spanhaak, S. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Iron absorption can be measured by the incorporation of stable iron isotopes into erythrocytes, 14 days after isotope administration. The disadvantage of this method is the high dose of isotopes needed to obtain a sufficient enrichment. Therefore, in this study cell fractions rich in young erythroid cells were prepared by using a density...
article 1998
document
van Dokkum, W. (author), de la Guéronnière, V. (author), Schaafsma, G. (author), Bouley, C. (author), Luten, J. (author), Latgé, C. (author), TNO Voeding (author)
True fractional Ca absorption from six foods was measured in twelve normal healthy women, aged 20-29 years. The tested foods were commercially available fresh cheese, fresh cheese prepared by new technology and rich in Ca, similar cheese with added Fe, enteral food, mineral water alone and combined with a spaghetti meal. The aim of the study was...
article 1996
Searched for: subject:"isotope"
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