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Abstract #3836

Clot Lysis Dynamics in an Experimental Rat Venous Thrombosis Model During 4 Weeks of Fibrinolytic Inhibition

Abdel Wahad Bidar1, Anna Ravnefjord2, Frank Risse1, Edvin Johansson1, Margareta Elg2, Paul Hockings1

1R&D PHB, Imaging, AstraZeneca, Mlndal, Sweden; 2CVGI, Bioscience, AstraZeneca, Mlndal, Sweden

Understanding the dynamic process following clot formation and lysis in relevant animal models is of interest in order to understand the mechanism underlying human disease and to develop therapeutic approaches. The results demonstrate for the first time by means of MRI the dynamics of clot lysis in vivo in a rat model of venous thrombosis in the presence of an antifibrinolytic agent. Delayed thrombus lysis rate was measured in treated animals compared to controls. This model could be useful for translation between In Vitro and in vivo results and for bridging to clinical results when evaluating thrombolytic and fibrinolytic agents.

Keywords

abdominal acid addition additional administered agent agents animal animals arrow assays available axial bifurcation binding blocking bridging chloride clinical clot coagulation confounding consisting control controls coronal course daily days delayed develop dose dynamic dynamics evaluate experimental expressed expression ferric fibrin fitted flash formation frank function give growth help hence house human in vivo induction inhibition initial insight invasive knowledge long made male manual many mate mated measured meeting minutes model models mono novel oral plot post previously prophylaxis pulmonary rang rats relevant remaining remove renal scientific segmented self sequential series significance slice slices slow starting suited term therapeutic thick thrombi thrombosis thrombus tissue topical translation treated twice unction understand useful vein venous versus vitro volume weeks wide wing yielding