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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Decreased peripheral bone mineral content in patients under anticoagulant therapy with phenprocoumon.

In experimental and clinical studies, conflicting results regarding the effect of oral anticoagulant therapy on bone metabolism have been reported. To measure a possible influence of long-term anticoagulant therapy with phenprocoumon on peripheral bone mass, measurements of peripheral bone mineral content (BMC) and serum osteocalcin levels were performed with single photon absorptiometry in a total of 78 patients on anticoagulant treatment. We studied 43 women (mean age 66 years +/- 2 SEM) and 35 men (mean age 65 years +/- 2 SEM) with a median duration of phenprocoumon therapy of 1 year (1-9 years). In all patients, the medical history gave no symptoms of metabolic bone disease, or diseases or medications causing osteoporosis. Both in the male and female groups, mean peripheral BMC was significantly decreased (male: P less than 0.01, female: P less than 0.003) when compared with corresponding controls. Serum OC-levels measured in 16 patients were also significantly lower than those of the controls (P less than 0.02). Our data of decreased BMC and low serum OC-levels indicate reduced bone mass in patients on long-term anticoagulant therapy with phenprocoumon. This may imply an influence of anticoagulants on bone metabolism resulting in decreased bone formation.[1]


  1. Decreased peripheral bone mineral content in patients under anticoagulant therapy with phenprocoumon. Resch, H., Pietschmann, P., Krexner, E., Willvonseder, R. Eur. Heart J. (1991) [Pubmed]
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