A direct thrombin inhibitor suppresses protein C activation and factor Va degradation in human plasma: Possible mechanisms of paradoxical enhancement of thrombin generation
A direct thrombin inhibitor melagatran enhanced thrombin generation (TG) in plasma.
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Melagatran inhibited protein C (PC) activation at the same concentrations.
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Dabigatran and active site-blocked thrombin showed similar effects to melagatran.
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Melagatran suppressed factor Va degradation and subsequently increased factor Va.
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Inhibition of PC activation/increase in factor Va may cause TG enhancement.
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