Results 261 to 270 of about 33,455 (307)
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Systemic vascular autoregulation amplifies pressor responses to vasoconstrictor agents
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1989Experiments were performed in seven conscious dogs to evaluate the contribution of total systemic autoregulation to the increase in mean arterial pressure (MAP) produced by the intravenous administration of pressor agents. Each dog was instrumented for the measurement of aortic pressure, central venous pressure, and cardiac output, and all dogs ...
P J, Metting +4 more
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Circulatory responses to vasoconstrictor agents during passive heating in the rat
Journal of Applied Physiology, 1990The purpose of this study was to determine the actions of several pharmacological agents on the circulatory system, and more specifically on the superior mesenteric vascular bed, in response to environmental heat stress in chloralose-anesthetized rats.
K C, Kregel, C V, Gisolfi
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Termination of migraine headache by a new anti‐inflammatory vasoconstrictor agent
Clinical Pharmacology & Therapeutics, 1965Indomethacin, a new nonsteroid anti‐inflammatory agent causes headache, a marked decrease in cerebrospinal fluid pressure, and an increase in retinal arterial pressure, while it produces little and inconstant change in the pressure of the carotid and brachial arteries.
F, SICUTERI, S, MICHELACCI, B, ANSELMI
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Regional autoregulatory responses during infusion of vasoconstrictor agents in conscious dogs
American Journal of Physiology-Heart and Circulatory Physiology, 1990We investigated pressure-dependent autoregulatory responses in mesenteric, iliac, and renal vascular beds of conscious dogs during intravenous infusion of angiotensin II, phenylephrine, or arginine vasopressin at rates which increased arterial pressure by 20-40 mmHg.
L J, Hellebrekers +4 more
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A Novel Platelet-Derived Renal Vasoconstrictor Agent in Normotensives and Essential Hypertensives
Journal of Vascular Research, 1992Platelet 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 +5 more
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femoral arterial responses to vasoconstrictor and vasodilator agents in endotoxin shock
Life Sciences, 1994The 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 +3 more
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Effect of severe hypoxia on the pulmonary vascular response to vasoconstrictor agents
Journal of Applied Physiology, 1981When isolated blood-perfused pig lungs are exposed to inspired O2 tensions (PIO2) below 30 Torr, hypoxic pulmonary vasoconstriction is transient. To determine whether this transience is caused by a decrease in the amount of ATP available for maintenance of smooth muscle contraction, we compared normoxic (PIO2 = 100 Torr) and hypoxic (PIO2 = 10 Torr ...
A L, Harabin, M D, Peake, J T, Sylvester
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EFFECTS OF VASOCONSTRICTOR AGENTS ON CARDIAC IRRITABILITY
The Journal of Pharmacology and Experimental Therapeutics, 1958J L, GILBERT +3 more
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[Toxicity tests in vasoconstrictor agents added to local anesthetics].
Deutsche zahnarztliche Zeitschrift, 1976The toxicities of adrenalin, nor-adrenalin and vasopressin derivatives were compared on the basis of animal tests, among others. The adrenalin additive is rejected.
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