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Blood leukotrienes in headache: correlation with platelet activity
R LaMancusa1, F M Pulcinelli, P Ferroni
1Department of Experimental Medicine, University of Rome La Sapienza, Italy.
Headache
|June 1, 1991
Summary
Platelet hyperactivity is linked to migraine. During migraine attacks, platelets become less responsive, and blood leukotrienes may influence this change, particularly in classical migraine.
Area of Science:
- Neuroscience
- Hematology
- Biochemistry
Background:
- Platelet hyperactivity is a common finding in migraine patients.
- Biologically active substances released by platelets, like catecholamines and arachidonic acid metabolites, are implicated in migraine pathogenesis.
Purpose of the Study:
- To investigate platelet aggregation and blood leukotriene levels in patients with different headache types.
- To explore the relationship between platelet function, leukotrienes, and migraine phases.
Main Methods:
- In vitro platelet aggregation tests were conducted on samples from patients with classical migraine, common migraine, and cluster headache.
- Blood leukotriene levels (LTC4, LTB4) were analyzed during different phases of migraine and cluster headache.
- Normal platelets were incubated with leukotrienes to assess their effect on platelet aggregation.
Main Results:
- Platelet hyperactivity was observed in classical migraine patients between attacks.
- Marked platelet hyporesponsiveness occurred during both classical and common migraine attacks.
- Leukotrienes (LTC4, LTB4) were present during classical migraine attacks, with altered levels post-attack. Leukotrienes were absent in cluster headache.
- Leukotriene incubation affected normal platelet response to epinephrine.
Conclusions:
- Blood leukotrienes may play a role in the altered platelet aggregability observed during classical migraine attacks.
- Platelet function and leukotriene profiles differ between migraine types and headache phases.