Hypercoagulability and hypofibrinolysis in sickle-cell disease

Area of Science:

• Hematology
• Coagulation Science
• Thrombosis Research

Background:

• Sickle-cell (SC) disease is a complex hematological disorder.
• Understanding coagulation and fibrinolysis in SC disease is crucial for managing complications.

Purpose of the Study:

• To investigate blood coagulation and fibrinolysis parameters in patients with SC disease.
• To identify potential links between these parameters and disease status (e.g., painful crises, transfusions).

Main Methods:

• Studied 52 patients with SC disease (SC-beta-thalassaemia and homozygous SC-anaemia).
• Assessed thrombin time, reptilase time, platelet count, fibrinogen, factor VIII activity, antithrombin-III (At-III) activity, fibrinolytic activity, plasminogen, and fibrinogen/fibrin degradation products (FDP).

Main Results:

• Significantly shorter thrombin and reptilase times observed in SC disease patients.
• Elevated platelet count, fibrinogen, and factor VIII activity noted, except in transfused patients (<50% HbS).
• Reduced fibrinolytic activity in patients experiencing painful crises; normal in asymptomatic patients.

Conclusions:

• SC disease is associated with pro-coagulant changes and altered fibrinolysis.
• Painful crises correlate with diminished fibrinolytic activity, suggesting increased thrombotic risk.
• Transfusion status impacts coagulation factor levels, requiring careful monitoring.