[Platelet aggregation in migraine and other headaches]

Area of Science:

• Neurology
• Hematology
• Vascular Biology

Background:

• Platelet aggregation plays a crucial role in hemostasis and thrombosis.
• Alterations in platelet function have been implicated in various neurological disorders.
• Migraine and Horton's headache are primary headache disorders with complex pathophysiology.

Purpose of the Study:

• To investigate circulating platelet aggregates and spontaneous platelet aggregation in patients with migraine and Horton's headache.
• To compare platelet aggregation parameters between headache patients and healthy controls.

Main Methods:

• Circulating platelet aggregates were quantified using the Wu and Hoak method.
• Spontaneous platelet aggregation was measured in platelet-rich plasma via transmission aggregometry.
• Study included patients with migraine, Horton's headache, trigeminal neuralgia, and healthy subjects.

Main Results:

• The aggregation coefficient was significantly lower in patients with migraine and Horton's headache compared to healthy controls.
• A subset of migraine patients exhibited significantly different spontaneous platelet aggregation percentages.
• No significant differences were noted in spontaneous aggregation between the control group and Horton's headache group.

Conclusions:

• Significant changes in platelet aggregation are observed in migraine and Horton's headache.
• These findings suggest a potential involvement of platelet dysfunction in the pathogenesis of these headache disorders.
• Further research is warranted to elucidate the precise role of platelets in migraine and Horton's headache.