Related Experiment Videos
[Protein C and coagulation in sepsis]
A D'Angelo1, P Della Valle, D Giudici
1Servizio di Coagulazione ed Unità Ricerca Trombosi, IRCCS H S. Raffaele, Milano, Italy. armando.dangelo@hsr.it
Minerva Anestesiologica
|June 8, 2004
Summary
Inflammation and coagulation are tightly linked, with mutual activation leading to organ failure in sepsis. Restoring natural anticoagulant mechanisms, like protein C, may treat inflammation and improve outcomes.
Area of Science:
- Biochemistry
- Immunology
- Hematology
Context:
- Inflammation and coagulation pathways are increasingly recognized as interconnected.
- Severe sepsis involves reciprocal activation, leading to multi-organ failure.
- Pro-inflammatory cytokines activate blood-exposed cells, shifting them towards a procoagulant state.
Purpose:
- To elucidate the complex interplay between inflammation and coagulation.
- To investigate the role of natural anticoagulant mechanisms in sepsis-induced organ failure.
- To explore therapeutic strategies targeting the protein C system.
Summary:
- A positive feedback loop exists between inflammation and coagulation, where elevated acute-phase proteins and depressed natural anticoagulants contribute to uncontrolled thrombin formation.
- Pro-inflammatory cytokines activate endothelial cells, platelets, monocytes, and neutrophils, promoting a procoagulant environment and microcirculatory thrombin generation.
- While anticoagulants do not improve survival in sepsis, the protein C system, crucial for maintaining anticoagulant function and modulating inflammation, is depressed and represents a potential therapeutic target.
Impact:
- Understanding the inflammation-coagulation link is vital for managing sepsis and related conditions.
- The protein C system's role in modulating inflammation and its depression in sepsis highlight its therapeutic potential.
- Targeting endothelial dysfunction and restoring natural anticoagulant mechanisms may offer new avenues for treating sepsis-induced organ failure.