BIBR 953 (Dabigatran, Pradaxa) is a highly selective, reversible, and potent thrombin inhibitor and is orally available as the prodrug, dabigatran etexilate. It has shown antithrombotic efficacy in animal models of thrombosis, with a rapid onset of action and predictable pharmacodynamic response.
| Cell Experiment | |
|---|---|
| Cell lines | |
| Preparation method | Human thrombin is dose-dependently and competitively inhibited by dabigatran (Table 2). This inhibition with a Ki of 4.5 nmol/L compares well to the Ki of melagatran (11.2 nmol/L). Real-time binding kinetics using surface plasmon resonance showed a rapid and reversible binding of dabigatran to thrombin.7 The concentration of dabigatran required tom double the in vitro coagulation time (EC2) in platelet poor plasma is species dependent and varies with the type of test (Table 3). |
| Concentrations | |
| Incubation time | |
| Animal Experiment | |
|---|---|
| Animal models | rabbit model of venous thrombosis |
| Formulation | saline |
| Dosages | a single IV administration of 5, 10, 20, and 30 mg/kg |
| Administration | i.p. |
| Molecular Weight | 471.51 |
| Formula | C25H25N7O3 |
| CAS Number | 211914-51-1 |
| Solubility (25°C) | DMSO |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
| Related Thrombopoietin/Thrombin Products |
|---|
| Desirudin
Desirudin is a thrombin inhibitor that inhibits thrombosis and venous stasis thrombosis.Desirudin can be used in studies related to thrombocytopenia or platelet dysfunction. |
| TP508
TP508 is a 23-amino acid nonproteolytic thrombin peptide that represents a portion of the receptor-binding domain of thrombin molecule. |
| Succinyl-(Pro58, D-Glu65)-Hirudin (56-65) (sulfated)
Succinyl-(Pro58,D-Glu65)-Hirudin (56-65) (sulfated) is a hirugen-like peptide, and has high affnity for thrombin than Hirugen, with a KD < 100 nM. |
| Thrombin receptor peptide ligand
Thrombin receptor peptide ligand is a thrombin receptor antagonist peptide that can be used as an antithrombotic agent. |
| Z-Gly-Pro-Arg-4MβNA
Z-Gly-Pro-Arg-4MβNA is the cleavage of the substrate of thrombin to release free 4-methoxy-2-naphthylamine (4MβNA). |
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