Searched for: subject:"Homocysteine"
(1 - 12 of 12)
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van Vliet, T. (author), Jacobs, R.G.J.M. (author), de Deckere, E. (author), van den Berg, H. (author), de Bree, A. (author), van der Put, N.M.J. (author), TNO Kwaliteit van Leven (author)
Objective: To determine the effect of folic acid, vitamin B6 and B12 fortified spreads on the blood concentrations of these vitamins and homocysteine. Design and setting: A 6-week randomized, double-blinded, placebo-controlled, parallel trial carried out in a clinical research center. Subjects: One hundred and fifty healthy volunteers (50% males...
article 2007
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Smulders, Y.M. (author), Smith, D.E.C. (author), Kok, R.M. (author), Teerlink, T. (author), Gellekink, H. (author), Vaes, W.H.J. (author), Stehouwer, C.D.A. (author), Jakobs, C. (author), TNO Kwaliteit van Leven (author)
Background: Red blood cells (RBCs) represent a storage pool for folate. In contrast to plasma, RBC folate can appear in different biochemical isoforms. So far, only the methylenetetrahydrofolate reductase (MTHFR) 677 TT genotype has been identified as a determinant of RBC folate vitamer distribution. Objective: The purpose of this study is to...
article 2007
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Verhoef, P. (author), van Vliet, T. (author), Olthof, M.R. (author), Katan, M.B. (author), TNO Kwaliteit van Leven (author)
Background: A high plasma concentration of total homocysteine (tHcy) is associated with increased risk of cardiovascular disease. A high protein intake and hence a high intake of methionine-the sole dietary precursor of homocysteine-may raise plasma tHcy concentrations. Objectives: We studied whether high intake of protein increases plasma...
article 2005
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de Jong, R.J. (author), Verwei, M. (author), West, C.E. (author), van Vliet, T. (author), Siebelink, E. (author), van den Berg, H. (author), Castenmiller, J.J.M. (author), TNO Kwaliteit van Leven (author)
Objective: The aim of this study was to investigate whether milk fortified with folic acid enhances the folate status of humans and whether the presence of folate-binding proteins (FBP) in pasteurised milk affects the bioavailability of folic acid from fortified milk. In untreated and pasteurised milk, folate occurs bound to FBP, while FBP is ...
article 2005
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Beulens, J.W.J. (author), Sierksma, A. (author), Schaafsma, G. (author), Kok, F.J. (author), Struys, E.A. (author), Jakobs, C. (author), Hendriks, H.F.J. (author), TNO Kwaliteit van Leven (author)
Background: Moderate alcohol consumption is associated with a decreased risk of cardiovascular disease. Because plasma homocysteine (tHcy) is considered an independent risk factor for cardiovascular disease and associated with alcohol consumption, the authors investigated the effect of moderate alcohol consumption on kinetics of plasma tHcy...
article 2005
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Olthof, M.R. (author), van Vliet, T. (author), Verhoef, P. (author), Zock, P.L. (author), Katan, M.B. (author), TNO Kwaliteit van Leven (author)
Background: Betaine (trimethylglycine) lowers plasma homocysteine, a possible risk factor for cardiovascular disease. However, studies in renal patients and in obese individuals who are on a weight-loss diet suggest that betaine supplementation raises blood cholesterol; data in healthy individuals are lacking. Such an effect on cholesterol would...
article 2005
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Dhonukshe-Rutten, R.A.M. (author), van Dusseldorp, M. (author), Schneede, J. (author), de Groot, L.C.P.G.M. (author), van Staveren, W.A. (author), TNO Kwaliteit van Leven (author)
Background: Cobalamin deficiency is prevalent in vegetarians and has been associated with increased risk of osteoporosis. Aim of the study: To examine the association between cobalamin status and bone mineral density in adolescents formerly fed a macrobiotic diet and in their counterparts. Methods: In this cross-sectional study bone mineral...
article 2005
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Olthof, M.R. (author), Brink, E.J. (author), Katan, M.B. (author), Verhoef, P. (author), TNO Kwaliteit van Leven (author)
Background: A high homocysteine concentration is a potential risk factor for cardiovascular disease that can be reduced through betaine supplementation. Choline is the precursor for betaine, but the effects of choline supplementation on plasma total homocysteine (tHcy) concentrations in healthy humans are unknown. Objective: The objective was to...
article 2005
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Verhoef, P. (author), Steenge, G.R. (author), Boelsma, E. (author), van Vliet, T. (author), Olthof, M.R. (author), Katan, M.B. (author), TNO Voeding (author)
Background: A high plasma total homocysteine (tHcy) concentration is a risk factor for cardiovascular disease. The increase in tHcy induced by methionine, the sole dietary precursor of homocysteine, might be modulated by other amino acids present in dietary proteins. Objectives: Our objectives were to compare the postprandial effect of free and...
article 2004
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Olthof, M.R. (author), van Vliet, T. (author), Boelsma, E. (author), Verhoef, P. (author)
High plasma homocysteine is a risk for cardiovascular disease and can be lowered through supplementation with 6 g/d of betaine. However, dietary intake of betaine is ∼0.5-2 g/d. Therefore, we investigated whether betaine supplementation in the range of dietary intake lowers plasma homocysteine concentrations in healthy adults. Four groups of 19...
article 2003
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Steenge, G.R. (author), Verhoef, P. (author), Katan, M.B. (author)
Elevated levels of plasma total homocysteine are associated with a higher risk of cardiovascular disease. Betaine and 5-methyltetrahydrofolate can remethylate homocysteine into methionine via independent reactions. We determined the effect of daily betaine supplementation, compared with both folic acid and placebo, on plasma concentrations of...
article 2003
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Broekmans, W.M.R. (author), Klöpping-Ketelaars, I.A.A. (author), Schuurman, C.R.W.C. (author), Verhagen, H. (author), van den Berg, H. (author), Kok, F.J. (author), van Poppel, G. (author), TNO Voeding (author)
Observational epidemiologic studies have shown that a high consumption of fruits and vegetables is associated with a decreased risk of chronic diseases. Little is known about the bioavailability of constituents from vegetables and fruits and the effect of these constituents on markers for disease risk. Currently, the recommendation is to...
article 2000
Searched for: subject:"Homocysteine"
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