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The protein C pathway
1Howard Hughes Medical Institute, Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA. Charles.Esmon@omrf.ouhsc.edu
Chest
|September 13, 2003
Summary
The protein C pathway controls blood clotting and inflammation. Deficiencies cause thrombosis, but activated protein C (APC) protects against sepsis, with protein C and thrombomodulin in clinical trials.
Area of Science:
- Biochemistry
- Hematology
- Immunology
Background:
- The protein C pathway is crucial for regulating thrombosis and inflammation.
- Key components include thrombin, thrombomodulin, EPCR, protein C, and protein S.
- Thrombomodulin and EPCR enhance protein C activation, while APC inhibits thrombin generation.
Purpose of the Study:
- To elucidate the multifaceted roles of the protein C pathway in thrombosis and inflammation.
- To explore the therapeutic potential of targeting the protein C pathway in severe sepsis.
Main Methods:
- Review of existing literature on the protein C pathway.
- Analysis of clinical studies on protein C deficiencies and sepsis treatment.
Main Results:
- Protein C pathway components regulate coagulation and inflammation.
- Deficiencies lead to microvascular thrombosis (purpura fulminans).
- Activated protein C (APC) demonstrates protective effects in severe sepsis.
Conclusions:
- The protein C pathway is vital for preventing thrombosis and modulating inflammation.
- APC shows therapeutic promise for severe sepsis.
- Protein C and thrombomodulin are under investigation as sepsis treatments.