Willems, E.W.

carotid adrenoceptor receptor blood subtype carotid blood flow response effect antagonist agonist vasoconstriction arteriovenou blood pressure phenylephrine prazosin pharmacol carotid arteriovenous anastomoses chapter adrenoceptor subtypes pressure rauwolscine animal anastomoses heart rate porcine anaesthetised br j pharmacol change antimigraine study migraine anaesthetised pigs bht 933 treatment α- adrenoceptors heart carotid vasoconstriction figure artery infusion conductance p <0.05 vs vehicle bookmark noradrenaline methylurapidil value vasoconstrictor result haemodynamic intracarotid table a-adrenoceptor tissue eur j pharmacol error anaesthetised dogs isometheptene group administration affinity baseline 5- methylurapidil blood flow carotid artery b-adrenoceptor involvement decrease adrenaline model willem carotid circulation circulation netherland intracarotid infusions experiment agent blockade mechanism 5- ht 1b