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- W1973850398 abstract "High circulating levels of homocysteine are a risk factor for arterial and venous thrombosis. This association has been established in numerous case-control studies. In some of these studies, patients were treated with anticoagulants at the time of venapuncture. It is not clear whether homocysteine concentrations are influenced by anticoagulants. If anticoagulation does, indeed, have an effect on homocysteine levels, it might underestimate or overestimate the possible association of homocysteine levels and vascular disease.In this study we used two different groups to investigate the effect of coumarin derivatives on homocysteine concentrations. Homocysteine levels were measured in 40 patients who were on the waiting list for orthopedic surgery and who were expected to receive prophylactic anticoagulant therapy after the operation. Measurements were taken before the operation, as well as during and after coumarin therapy. Homocysteine concentrations were also measured in a second study group consisting of 12 healthy volunteers who were treated with oral anticoagulants.Mean homocysteine concentrations increased by 6% (95% CI 2-10%) during the treatment with coumarin derivatives. This corresponds to a 1 mumol/L increase in homocysteine concentration. After the anticoagulant treatment period, the concentrations decreased again. We determined that this slight increase does not influence the interpretation of epidemiological studies. We also observed no significant effect of anticoagulants on homocysteine concentration after 13 weeks of treatment of healthy volunteers (decrease of 3.6%, or approximately 0.6 micromol/L; 95% CI -17.5-8.5%).We conclude that anticoagulation does not influence homocysteine concentrations to any significant degree." @default.
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- W1973850398 date "2006-03-01" @default.
- W1973850398 modified "2023-09-23" @default.
- W1973850398 title "Oral anticoagulant treatment with coumarin derivatives does not influence plasma homocysteine concentration" @default.
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- W1973850398 doi "https://doi.org/10.1016/j.ejim.2005.10.009" @default.
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