title: Selective carotid vasoconstriction by ergotamine as a relevant mechanism in its antimigraine action.
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity; D001794:Blood Pressure / Q000187:drug effects; D002342:Carotid Artery, External / Q000187:drug effects*; D004285:Dogs; D004878:Ergotamine / Q000008:administration & dosage*; D006801:Humans; D007269:Injections, Intra-Arterial; D008881:Migraine Disorders / Q000188:drug therapy*; D009638:Norepinephrine / Q000008:administration & dosage; D014655:Vascular Resistance / Q000187:drug effects; D014659:Vasectomy; D014662:Vasoconstrictor Agents / Q000008:administration & dosage*
chemical_list: D014662:Vasoconstrictor Agents; D004878:Ergotamine; D009638:Norepinephrine