... of vasoconstrictor prostanoids, cyclooxygenase-dependent contractions were enhanced during NO synthase inhibition in carotid arterial rings of obese CA-AMPK mice. Contractions to the α 1 -adrenoceptor agonist phenylephrine were augmented in renal arteries of obese animals, a genotype-independent phenomenon...

... responsiveness. Nifedipine (1 and 10 µ M) suppressed spontaneous myogenic responses. The αi-adrenoceptor agonist phenylephrine (1 and 10 µ M), when administered at 20 mm Hg, elicited constriction and vasomotion, and potentiated myogenic constriction to subsequent pressure elevation. Nifedipine (1 and 10 µ M...

... desensitization occurs, tissues loaded with fura-2/AM were pretreated with phenylephrine (PE), washed, then activated with submaximum (23 mM) and maximum (30 mM) KCl concentrations. Pretreatment of tissues with 1 µMPE for 1–30 min resulted in reductions compared to control in the ability of 30 mM KCl to increase...

... organ baths. Glibenclamide (0.01–10 µ M ), a K ATP channel antagonist, did not induce any measurable contraction, nor did it reduce the maximum contraction induced by vasopressin and phenylephrine. The specific inhibition of lemakalim-induced (a K ATP channel activator) relaxation by vasopressin...

...George Wyse This cross-sectional study examined responses of the isolated cystic artery to 3 α-adrenoceptor agonists and the effects of 2 antagonists in relation to subjects’ blood pressures. Potency of the 3 amines studied was: α-methylnorepinephrine > norepinephrine > phenylephrine...

... to in the content or advertisements. α 1 -Adrenoceptor α 2 -Adrenoceptor BHT-920 Phenylephrine Prazosin Rauwolscine Amiloride Arteries Veins Aorta 23 9 2008 Bloodvessels 1991;28:104-114 © 1991 S. Kargcr AG, Basel 0303-6847/91 /0283-0104S2.75/0 Alpha-Adrenoceptors...

... Zealand White rabbits were overstretched with an angioplasty balloon during either maximal vasoconstriction with phenylephrine (32 arteries) or maximal vasodilation with nitroprusside (31 arteries). After 3 days’ survival, medial necrosis was determined as percentage of cross-sectional medial area...

... preparations of rat isolated tail arteries perfused at constant flow (2 ml/min). Perfusion pressure changes reflecting vascular responses to cumulative addition of phenylephrine (PE) or dopamine (DOP) were recorded before and after MB addition (2.5 × 10 -4 M final concentration) at the intimal or adventitial...

..., quality or safety. The publisher and the editor(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...

... or phenylephrine. Oxygen metabolites, generated by the xanthine oxidase reaction, completely relaxed norepinephrine-induced contractile tone but not tone induced by phenylephrine. A mixture of oxygen metabolite scavengers (superoxide dismutase, catalase and mannitol) eliminated the relaxation induced...

...William F. Jackson Hamster thoracic aortas displayed rhythmic oscillations in active tension when stimulated with the αi-adrenergic agonist, phenylephrine, prostaglandin F 2α (PGF 2α ), and a number of other agonists, but not when activated with K + . These oscillations were not affected...

...-dependent vascular tone. We investigated phenylephrine-induced tone and its amplification by AII (10 pmol/l) in human internal mammary artery rings mounted in organ baths. We performed concentration-response curves to phenylephrine (0.1–100 µmol/l) before and after pretreatment with AII (10 pmol/l...