Increased proThrombin, Thrombin and bilirubin;
Thrombin clotting time(TCT).
For Thrombin inhibition, however, Thrombin must also bind to the heparin polymer at a
The formation of a ternary complex between AT, Thrombin, and heparin results in the inactivation of Thrombin.
In the process of coagulation,
factor Xa is involved in the formation of Thrombin(or factor IIa, if you prefer).
For Thrombin inhibition, however,
Thrombin must also bind to the heparin polymer at a site proximal to the pentasaccharide.
For this reason, heparin's activity against Thrombin is size-dependent,
with the ternary complex requiring at least 18 saccharide units for efficient formation.
At deficiency of factor XI(antihemophilic globulin C)- plasma thromboplastin precursor of Thrombin formation occurs delay fibrin and eventually retraction(seal)
of a blood clot, increasing bleeding.
Drug binds to the fibrin-specific binding sites of Thrombin, preventing fibrinogen from cleaving into fibrin,
thereby blocking the final step of the coagulation cascade network and thrombosis.
The anticoagulant drugs direct inhibitors of factor IIa- or Thrombin, if you prefer- exercise their action by interfering with the latter's
role in the process of coagulation.