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Impact of aliskiren on some hemostatic parameters in experimental arterial thrombosis in rats
Justyna Magdalena Hermanowicz1, Piotr Buczko2, Anna Tankiewicz-Kwedlo3
1Department of Clinical Pharmacy, Medical University of Bialystok, Białystok, Poland; Department of Pharmacodynamics, Medical University of Bialystok, Białystok, Poland.
Background:
Aliskiren is the first orally active inhibitor of renin to be approved for clinical use as an antihypertensive agent. A number of studies show a link between aliskiren and intravascular thrombosis.
Materials And Methods:
The goal of the present study was to investigate the impact of aliskiren on arterial thrombosis in normotensive and renovascular hypertensive rats. The contribution of each coagulation and fibrinolytic parameters in the mode of aliskiren action was determined. Six weeks after clipping of the left renal artery rats developed hypertension which was confirmed by the "tail cuff" method. Animals were treated with aliskiren (10, 30 and 100mg/kg/day) per os for 10 days. Arterial thrombosis was induced by electrical stimulation of the common carotid artery.
Results:
It was found that aliskiren in a dose-dependent manner decreased weight of the arterial thrombus in normotensive and hypertensive rats. It has been shown that this result was not associated with the effects on blood pressure, TF, PT, APTT, fibrinogen and hematological parameters. It was found that aliskiren caused increase of t-PA activity and decrease of its inhibitor activity.
Conclusions:
The presented results indicate that aliskiren inhibits hemostasis in the arterial thrombosis in rats. The antithrombotic effect is related with improvement of the fibrinolytic balance, and also depends on antiplatelet action.
