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首页> 外文期刊>Blood coagulation & fibrinolysis: an international journal in haemostasis and thrombosis >An in-vitro evaluation of direct thrombin inhibitor and factor Xa inhibitor on tissue factor-induced thrombin generation and platelet aggregation: a comparison of dabigatran and rivaroxaban
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An in-vitro evaluation of direct thrombin inhibitor and factor Xa inhibitor on tissue factor-induced thrombin generation and platelet aggregation: a comparison of dabigatran and rivaroxaban

机译:凝血酶直接抑制剂和Xa因子抑制剂对组织因子诱导的凝血酶生成和血小板聚集的体外评估:达比加群和利伐沙班的比较

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摘要

Dabigatran and rivaroxaban may simultaneously inhibit coagulation and platelet activation. This study aimed to reveal the in-vitro effects of dabigatran and rivaroxaban on thrombin generation and platelet aggregation (PAg) derived via tissue factor (TF) pathway. Citrated blood was obtained from six healthy adults (26-60 years old) and pretreated with increasing concentrations of dabigatran or rivaroxaban. Plasmatic endogenous thrombin potential (ETP) was measured by the calibrated automated thrombogram method. The whole blood PAg was evaluated via a kinetic counting method. TF produced an ETP of 1904.69 +/- 121.42nmolmin and a PAg of 78 +/- 5%. Dabigatran and rivaroxaban concentration-dependently reduced ETP with half-maximal inhibitory concentrations of 460.1 +/- 1.4 and 678.1 +/- 1.4nmol/l, and inhibited PAg with half-maximal inhibitory concentrations of 119.5 +/- 1.5 and 77.5 +/- 1.6 nmol, respectively. Dabigatran and rivaroxaban significantly inhibit TF-induced hypercoagulation and platelet activation in vitro in a concentration-dependent manner. Rivaroxaban displays stronger inhibition on thrombin generation and PAg than dabigatran.
机译:达比加群和利伐沙班可能同时抑制凝血和血小板活化。这项研究旨在揭示达比加群和利伐沙班对通过组织因子(TF)途径衍生的凝血酶生成和血小板聚集(PAg)的体外作用。从六个健康的成年人(26-60岁)获得柠檬血,并用达比加群或利伐沙班增加浓度进行预处理。血浆内源性凝血酶电位(ETP)通过校准的自动血栓图方法进行测量。通过动力学计数法评估全血PAg。 TF产生的ETP为1904.69 +/- 121.42nmolmin,PAg为78 +/- 5%。达比加群和利伐沙班的浓度依赖性降低ETP,半数抑制浓度分别为460.1 +/- 1.4和678.1 +/- 1.4nmol / l,PAg抑制半数抑制浓度为119.5 +/- 1.5和77.5 +/-分别为1.6 nmol。达比加群和利伐沙班在体外以浓度依赖性方式显着抑制TF诱导的高凝和血小板活化。与达比加群相比,利伐沙班对凝血酶的生成和PAg的抑制作用更强。

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