Effect of low-molecular-weight heparin (Tinzaparin) and unfractionated heparin on platelet aggregation
A low-molecular-weight heparin (LMWH), Tinzaparin, was compared with unfractionated heparin (UFH) for their effects on platelet aggregation in vitro and ex vivo. Both heparins showed a dose-dependent proaggregatory effect on ADP- and collagen-induced platelet aggregation in vitro, but LMWH was less potent. The differences in potency between Tinzaparin and UFH depended on how the compounds were com