...Ismail Laher; Loren P. Thompson; Lisa Gagne The amplification of α-adrenoceptor-mediated vasoconstriction by angiotensin II was studied in femoral artery rings from rabbits. Threshold concentrations of angiotensin II (0.1 n M ) increased the maximal response to clonidine to 139 ± 8% of control...

...(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Norepinephrine Rabbit Ear artery Adrenoreceptors Phenylephrine Yohimbine Prasozin Clonidine 30 09 1982...

...Shoji Shibata; Nobuhiro Satake; Shoichi Ueda; Kelly Hester; Fidel Flores Effects of nicorandil on contractile responses to α 1 - and α 2 adrenoceptor agonists were examined in isolated rabbit aorta. Nicorandil (10 –6 or 10 –5 M ) inhibited contractile responses to clonidine (CL) and BHT-920...

... of tritium. Clonidine (10 –6 to 10 -5 M ) and acetylcholine (10 –6 M ) diminished the stimulation-evoked overflow of tritium. After the overflow had been raised by either atropine (10 –4 M ) or phentolamine (10 –6 M ), clonidine (10 –6 M ) decreased the overflow below control values. Clonidine (10 –5 M...

... agonist, clonidine, in concentrations (10 –6 M) which did likewise to the fractional release of 3 H-norepinephrine. Second, destruction of the adrenergic nerves by in vitro treatment with 6-hydroxydopamine reduced the fractional release of 3 H-purines by 55 %. The release of purines which remains after 6...