Hilton B P, Zilkha K J
J Neurol Neurosurg Psychiatry. 1974 May;37(5):593-7. doi: 10.1136/jnnp.37.5.593.
Platelet aggregation responses to 5-hydroxytryptamine (5-HT) were measured in plasma from migrainous subjects taking either methysergide maleate or ergotamine tartrate and were found to be reduced. Blood 5-HT levels of subjects free of headache were not affected by these drugs. The results support the hypothesis that methysergide and ergotamine act by occupying 5-HT uptake sites in vessel walls, leaving 5-HT molecules available to occupy receptors concerned with vasoconstriction.
在服用马来酸美西麦角或酒石酸麦角胺的偏头痛患者的血浆中,测量了血小板对5-羟色胺(5-HT)的聚集反应,发现该反应降低。无头痛症状的受试者的血液5-HT水平不受这些药物影响。这些结果支持了以下假说:美西麦角和麦角胺通过占据血管壁中的5-HT摄取位点起作用,使5-HT分子可用于占据与血管收缩有关的受体。