Thrombin
(Redirected from Factor IIa)
Thrombin[edit | edit source]
Introduction[edit | edit source]
Thrombin is a critical enzyme in the coagulation process, playing a key role in blood clot formation. It acts on fibrinogen, a blood protein, converting it into fibrin, which forms the structural basis of blood clots.
Biochemical Role and Function[edit | edit source]
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Thrombin is produced from prothrombin, a plasma protein, by the enzymatic action of the prothrombinase complex. It has multiple functions in the coagulation cascade, including:
- Cleaving fibrinogen to form fibrin
- Activating platelets
- Enhancing further prothrombin activation
Formation and Regulation[edit | edit source]
Thrombin formation is regulated by various factors within the coagulation cascade, ensuring that clotting occurs appropriately in response to injury and not under normal circulatory conditions.
Clinical Significance[edit | edit source]
Thrombin's role in coagulation makes it a focal point in understanding and treating various blood disorders and conditions, such as:
- Thrombosis
- Hemophilia
- Hypercoagulable states
Therapeutic Uses and Inhibitors[edit | edit source]
Thrombin inhibitors, like heparin and warfarin, are widely used to prevent and treat thrombotic disorders. Recombinant thrombin is used in surgeries to aid in clotting.
Diagnostic Use[edit | edit source]
Thrombin time (TT) tests, which measure the time taken for a blood sample to clot after the addition of thrombin, are used to diagnose bleeding disorders and monitor anticoagulant therapy.
Research and Developments[edit | edit source]
Ongoing research focuses on developing new anticoagulants targeting thrombin and understanding thrombin's role in various physiological and pathological processes.
See Also[edit | edit source]
References[edit | edit source]
External Links[edit | edit source]
| Thrombin Resources | |
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