Platelet function and coagulation in patients with Wilson disease.

Area of Science:

• Hematology
• Hepatology
• Genetics

Background:

• Wilson disease (hepatolenticular degeneration) is a genetic disorder of copper metabolism.
• Hemostatic abnormalities, particularly platelet function, are not well-characterized in this condition.

Purpose of the Study:

• To investigate hemostatic function, focusing on platelet abnormalities in patients with Wilson disease.
• To correlate platelet dysfunction with bleeding tendencies in this patient cohort.

Main Methods:

• Studied 16 patients with Wilson disease.
• Assessed platelet aggregation in response to adenosine diphosphate, epinephrine, and collagen.
• Evaluated bleeding times, platelet retention, and prothrombin consumption.

Main Results:

• Fifteen of 16 patients exhibited abnormal platelet aggregation.
• Collagen-induced aggregation was frequently impaired (delayed/absent aggregation, altered shape change).
• Thrombocytopenia was observed in some patients, with one exhibiting thrombocytosis and hyperfibrinogenemia.

Conclusions:

• Platelet aggregation abnormalities are common in Wilson disease.
• Impaired platelet function, especially with collagen, may contribute to bleeding tendencies.
• Further research into Wilson disease hemostasis is warranted.