Results 291 to 300 of about 3,320,030 (364)

beta-Receptor influence on lung vasoconstrictor responses to hypoxia and humoral agents

Journal of Applied Physiology, 1977
The role of the adrenergic receptor in mediating pulmonary vascular responses to gaseous and humoral agents was investigated by use of epinephrine injections in the perfused feline pulmonary circulation. Alteration of the balance between alpha- and beta-adrenergic activity was quantified by measurement of decreasing vasoconstrictor activity to ...
R J, Porcelli, A T, Viau, N E, Naftchi, E H, Bergofsky   +3 more
openaire   +2 more sources

A Novel Platelet-Derived Renal Vasoconstrictor Agent in Normotensives and Essential Hypertensives

Journal of Vascular Research, 1992
Platelet homogenates from 200 ml blood of essential hypertensives (n = 28) and normotensives (n = 13) were deproteinized and separated by gel chromatography. The fractions obtained were then tested for vasopressor activity in the isolated perfused rat kidney. In both normotensives and hypertensives, two vasopressor fractions appeared.
A, Agha, H, Schlüter, S, König, K, Biel, M, Tepel, W, Zidek   +5 more
openaire   +2 more sources

femoral arterial responses to vasoconstrictor and vasodilator agents in endotoxin shock

Life Sciences, 1994
The hypothesis for this study is that the decreased arterial response to catecholamines may be due to the effect of endotoxemia on vessel tone. One control ring was taken from one femoral artery of a Wistar rat and after endotoxin (ENDT) infusion (i.v. 6 mg/kg-1 hr.), one ring was removed from the contralateral artery.
Z, Zhou, J M, Price, E T, Sutton, C H, Baker   +3 more
openaire   +2 more sources

Vascular Resistance and Reactivity to Various Vasoconstrictor Agents in Hypertensive Rats

1972
G. Haeusler, L. Finch
openaire   +2 more sources

A novel potent vasoconstrictor peptide produced by vascular endothelial cells

Nature, 1988
M. Yanagisawa, H. Kurihara, S. Kimura, Y. Tomobe, Mieko Kobayashi, Y. Mitsui, Y. Yazaki, K. Goto, T. Masaki   +8 more
semanticscholar   +1 more source

[Toxicity tests in vasoconstrictor agents added to local anesthetics].

Deutsche zahnarztliche Zeitschrift, 1976
The toxicities of adrenalin, nor-adrenalin and vasopressin derivatives were compared on the basis of animal tests, among others. The adrenalin additive is rejected.
openaire   +1 more source

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

Canadian Journal of Physiology and Pharmacology, 1980
S. Cunnane, M. Manku, M. Oka, D. Horrobin   +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
J. Elliott, Clare E. Bryant, J. Soydan
semanticscholar   +1 more source

AMPLIFICATION BY SEROTONIN OF RESPONSES TO OTHER VASOCONSTRICTOR AGENTS IN THE RAT TAIL ARTERY

Clinical and Experimental Pharmacology and Physiology, 1989
X‐H. Xiao, M. Rand
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
G. Molderings, H. Schümann
semanticscholar   +1 more source