Bivalirudin Trifluoroacetate

Samples

Platelet-poor plasma

Preparation method

This compound is soluble in DMSO. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below - 20 °C for several months.

Reacting condition

1.5 ~ 30 μg/mL

Applications

In platelet-poor plasma, Bivalirudin dose-dependently delayed thrombin formation regardless of the activators. Under actin activation, thrombin peak levels decreased progressively (21.5% ± 9.2% at 1.5 μg/mL to 69.9% ± 12.3% at 30 μg/mL). With tissue factor as a trigger, the decrease was more gradual. The peak level of thrombin was only reduced by 29.4% ± 6.2% at 30 μg/mL.

Animal models

A thromboplastin-induced thrombosis mouse model

Dosage form

1 μmol/kg; i.v.

Applications

In a thromboplastin-induced lung thrombosis mouse model, Bivalirudin micelles were accumulated in lung thrombi 10-fold more than free Bivalirudin. Moreover, Bivalirudin micelles significantly prolonged the half-life time, increasing the bioavailability of Bivalirudin. In addition, Bivalirudin micelles showed significantly higher anticoagulant activity than free Bivalirudin in both the lung thrombosis model and the ferric chloride-induced carotid artery thrombosis model.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.

References:

[1]. Tanaka KA, Szlam F, Sun HY, Taketomi T, Levy JH. Thrombin generation assay and viscoelastic coagulation monitors demonstrate differences in the mode of thrombin inhibition between unfractionated heparin and bivalirudin. Anesth Analg. 2007 Oct;105(4):933-9.

[2]. She ZG, Liu X, Kotamraju VR, Ruoslahti E. Clot-targeted micellar formulation improves anticoagulation efficacy of bivalirudin. ACS Nano. 2014 Oct 28;8(10):10139-49.