Results 261 to 270 of about 92,710 (320)
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Journal of Animal Science, 1998
The beta-adrenergic receptors (beta-AR) are present on the surface of almost every type of mammalian cell. These receptors are stimulated physiologically by the neurotransmitter, norepinephrine and the adrenal medullary hormone, epinephrine.
H. Mersmann
semanticscholar +1 more source
The beta-adrenergic receptors (beta-AR) are present on the surface of almost every type of mammalian cell. These receptors are stimulated physiologically by the neurotransmitter, norepinephrine and the adrenal medullary hormone, epinephrine.
H. Mersmann
semanticscholar +1 more source
Response to Inhaled ß-Agonist in a Patient Receiving ß-Adrenergic Blockers
Archives of Internal Medicine, 1984A 52-year-old man receiving long-term hemodialysis and a beta-adrenergic blocker for hypertension had symptoms of acute bronchospasm when exposed to a new hemodialyzer. Resistant to two doses of subcutaneous epinephrine (1 mL of 1:1000 dilution) and one intravenous dose of aminophylline (250 mg), the bronchospasm was rapidly relieved by metaproterenol ...
Eli A. Friedman +3 more
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Journal of Animal Science, 2006
The impact of using 2 beta-adrenergic agonists in feedlot cattle fed finishing diets was evaluated using 54 steers (45 crossbred Charolais and 9 Brangus) initially weighing 424 +/- 26.6 kg in a randomized complete block design with 3 treatments and 6 ...
L. Avendaño-Reyes +5 more
semanticscholar +1 more source
The impact of using 2 beta-adrenergic agonists in feedlot cattle fed finishing diets was evaluated using 54 steers (45 crossbred Charolais and 9 Brangus) initially weighing 424 +/- 26.6 kg in a randomized complete block design with 3 treatments and 6 ...
L. Avendaño-Reyes +5 more
semanticscholar +1 more source
American Journal of Physiology-Lung Cellular and Molecular Physiology, 1995
Few studies have addressed whether target tissue adrenergic receptors in humans undergo desensitization in response to agonist administration. To determine whether lung cell beta 2-adrenergic receptors (beta 2-AR) undergo such desensitization, we harvested bronchial epithelial cells and alveolar macrophages via bronchoscopy from eight normal subjects ...
M. A. Meyers +4 more
openaire +2 more sources
Few studies have addressed whether target tissue adrenergic receptors in humans undergo desensitization in response to agonist administration. To determine whether lung cell beta 2-adrenergic receptors (beta 2-AR) undergo such desensitization, we harvested bronchial epithelial cells and alveolar macrophages via bronchoscopy from eight normal subjects ...
M. A. Meyers +4 more
openaire +2 more sources
Circulation, 1998
BACKGROUND This study examines the cellular basis for the phenotypic appearance of broad-based T waves, increased transmural dispersion of repolarization (TDR), and torsade de pointes (TdP) induced by beta-adrenergic agonists under conditions mimicking ...
Wataru Shimizu, C. Antzelevitch
semanticscholar +1 more source
BACKGROUND This study examines the cellular basis for the phenotypic appearance of broad-based T waves, increased transmural dispersion of repolarization (TDR), and torsade de pointes (TdP) induced by beta-adrenergic agonists under conditions mimicking ...
Wataru Shimizu, C. Antzelevitch
semanticscholar +1 more source
Lung, 1988
This study was designed to clarify the mechanism of tolerance that occurs during prolonged administration of a beta-agonist in relation to membrane phospholipid degradation and to elucidate the effect of diltiazem, a calcium antagonist. Guinea pigs were divided into 3 groups: (1) control--physiological saline (0.5 ml) was injected once a day for 7 ...
Kouichi Hayashi +4 more
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This study was designed to clarify the mechanism of tolerance that occurs during prolonged administration of a beta-agonist in relation to membrane phospholipid degradation and to elucidate the effect of diltiazem, a calcium antagonist. Guinea pigs were divided into 3 groups: (1) control--physiological saline (0.5 ml) was injected once a day for 7 ...
Kouichi Hayashi +4 more
openaire +3 more sources
Chest, 1982
eta adrenergic agonists and theophylline are the nucleotide-sensitive regulator protein occurs. This -‘-‘ principal bronchodilators employed in the treatcombination then activates the third component, adement of bronchial asthma.
H. Nelson
semanticscholar +1 more source
eta adrenergic agonists and theophylline are the nucleotide-sensitive regulator protein occurs. This -‘-‘ principal bronchodilators employed in the treatcombination then activates the third component, adement of bronchial asthma.
H. Nelson
semanticscholar +1 more source
The Journal of Pharmacology and Experimental Therapeutics, 1982
In vitro incubation of cells with catecholamines leads to both down regulation of beta adrenergic receptor number and desensitization of agonist-stimulated adenylate cyclase activity. These same parameters, down regulation of beta adrenergic receptor number and desensitization of adenylate cyclase activity were assessed in rat lung membranes after in ...
P J, Scarpace, I B, Abrass
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In vitro incubation of cells with catecholamines leads to both down regulation of beta adrenergic receptor number and desensitization of agonist-stimulated adenylate cyclase activity. These same parameters, down regulation of beta adrenergic receptor number and desensitization of adenylate cyclase activity were assessed in rat lung membranes after in ...
P J, Scarpace, I B, Abrass
openaire +2 more sources
Effects of ?-agonists on b- and c-waves implicit for adrenergic mechanisms in cat retina
Documenta Ophthalmologica, 1987Nylidrin (buphenine) is a beta-adrenergic agonist known to dilate peripheral vessels and used therapeutically in retinal degeneration and glaucoma. We studied retinal function under beta-agonists in arterially perfused cat eyes and observed a dose-dependent, reversible increase in b-wave amplitude and a decrease in c-wave amplitude in concentrations ...
Urs Gerber +2 more
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Circulation, 1997
BACKGROUND We examined whether vasodilator responses to beta-agonists in human forearm vasculature are mediated in part through the nitric oxide pathway.
Matthew Dawes +2 more
semanticscholar +1 more source
BACKGROUND We examined whether vasodilator responses to beta-agonists in human forearm vasculature are mediated in part through the nitric oxide pathway.
Matthew Dawes +2 more
semanticscholar +1 more source