Results 311 to 320 of about 3,245,375 (355)
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Endothelium-dependent inhibition of the use of extracellular calcium for the arterial response to vasoconstrictor agents.

General Pharmacology: The Vascular System, 1985
The responses of rabbit mesenteric or coeliac artery rings to angiotensin II or adrenaline (but not to K+) were enhanced by endothelium destruction (by rubbing). Potentiation by indomethacin of the response to the agonists was observed in rubbed rings but not in intact ones.
M. Oshiro, A. Paiva, T. B. Paiva
semanticscholar   +5 more sources

Effects of vasoconstrictor agents on cardiac irritability.

The Journal of Pharmacology and Experimental Therapeutics, 1958
J. Gilbert   +3 more
semanticscholar   +3 more sources

Effects of sustained low-flow perfusion on the response to vasoconstrictor agents in postnatal intestine.

American Journal of Physiology-Gastrointestinal and Liver Physiology, 1999
This laboratory has previously reported that sustained reduction of blood flow in newborn intestine causes a triphasic increase in vascular resistance that occurs over 3-4 h and that these changes are mediated, in part, by loss of endothelial nitric ...
P. Nowicki
semanticscholar   +4 more sources

Beta-adrenergic Blocking Agents and Dental Vasoconstrictors

Dental Clinics of North America, 2010
A clinically significant interaction between epinephrine or levonordefrin with nonselective beta-adrenergic blocking agents, although apparently rare in the dental setting, is potentially serious and can lead to significant hypertension with a concomitant reflex bradycardia.
Elliot V. Hersh, Helen Giannakopoulos
openaire   +3 more sources

Enhanced vascular reactivity to various vasoconstrictor agents following pinealectomy in the rat: role of melatonin.

Canadian Journal of Physiology and Pharmacology, 1980
The mesenteric vascular bed preparation of control and pinealectomized (PX) male Wistar rats was used to examine vascular reactivity to two concentrations each of norepinephrine, serotonin, angiotensin, and potassium. Vasoconstrictor responses to 50- and
S. Cunnane   +3 more
semanticscholar   +1 more source

The role of nitric oxide in the responses of equine digital veins to vasodilator and vasoconstrictor agents.

Equine Veterinary Journal, 1994
Isolated equine digital veins were examined in vitro to study the importance of the endothelium in the responses to both vasodilator and vasoconstrictor agents and to characterise the endothelial-derived mediators involved.
J. Elliott, Clare E. Bryant, J. Soydan
semanticscholar   +1 more source

Amplifying effects of several vasoconstrictor agents of alpha 1-adrenoceptor-mediated contraction of isolated thoracic aortae of the guinea pig.

Pharmacology, 1989
In guinea-pig aorta phenylephrine and noradrenaline induced concentration-dependent contractions when beta-adrenoceptors were blocked. The contractile response to phenylephrine was amplified by previous application of subthreshold concentrations of 5 ...
G. Molderings, H. Schümann
semanticscholar   +1 more source

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