The pharmacodynamics of tinzaparin in healthy volunteers.

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Cambus JP, Saivin S, Heilmann JJ, Caplain H, Boneu B, Houin G

The pharmacodynamics of tinzaparin in healthy volunteers.

Br J Haematol. 2002 Mar;116(3):649-52.

PubMed ID
11849226 [ View in PubMed
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Abstract

We report the pharmacodynamic properties of tinzaparin (175 U/kg antifactor Xa) given as a single daily administration for 5 consecutive days to 14 healthy volunteers as a known safe, effective treatment of deep vein thrombosis and pulmonary embolism. The Cmax for antifactor Xa (0.87 +/- 0.15 U/ml) was associated with a 2.4 +/- 0.5-fold prolongation of the activated partial thromboplastin time (APTT) and a high antithrombin activity (0.38 +/- 0.1 U/ml). The Cmax value of antifactor Xa was 1.5- and twofold lower than those generated by similar doses of nadroparin and enoxaparin respectively. The clearance of antifactor Xa activity (1.29 +/- 0.2 l/h) was 1.5- and twofold greater than those reported for nadroparin and enoxaparin respectively. These results indicated that the antithrombotic and prohaemorrhagic effects of a low molecular weight heparin were independent from the absolute levels of antifactor Xa activities and from the prolongation of the APTT.

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