Results 31 to 40 of about 125,185 (333)

Concerted action of human chorionic gonadotropin and norepinephrine on intracellular-free calcium in human granulosa-lutein cells [PDF]

open access: yes, 1993
Luteal cells are known to possess receptors for LH/hCG and receptors of the beta-adrenergic type. Interactions of specific agonists with either receptor lead to the activation of adenylate cyclase and subsequently to an increase of cAMP.
Föhr, K. J.   +5 more
core   +1 more source

Chirality of β2-agonists. An overview of pharmacological activity, stereoselective analysis, and synthesis

open access: yesOpen Chemistry, 2020
β2-Agonists (β2-adrenergic agonists, bronchodilatants, and sympathomimetic drugs) are a group of drugs that are mainly used in asthma and obstructive pulmonary diseases. In practice, the substances used to contain one or more stereogenic centers in their
Ružena Čižmáriková   +2 more
doaj   +1 more source

Both Ligand- and Cell-Specific Parameters Control Ligand Agonism in a Kinetic Model of G Protein–Coupled Receptor Signaling [PDF]

open access: yes, 2007
G protein–coupled receptors (GPCRs) exist in multiple dynamic states (e.g., ligand-bound, inactive, G protein–coupled) that influence G protein activation and ultimately response generation. In quantitative models of GPCR signaling that incorporate these
Kinzer-Ursem, Tamara L.   +1 more
core   +3 more sources

Effects of catecholamines on volemic replacement with saline solution and the impact on heart rate variability in rabbits subjected to hemorrhage. A study by spectral analysis [PDF]

open access: yesActa Cirúrgica Brasileira, 2014
PURPOSE: To verify the effects of different catecholamines on volemic expansion and on the autonomic nervous system in rabbits that were subjected to hemorrhage.METHODS: Twenty four rabbits subjected to hemorrhage (with a 25% loss of blood volume) and ...
José Mariano Soares de Moraes   +9 more
doaj   +1 more source

Prolonged β-Agonist Infusion Does Not Induce Desensitization or Down-Regulation of β-Adrenergic Receptors in Newborn Sheep [PDF]

open access: yesPediatric Research, 1992
In adult animals, prolonged beta-agonist exposure leads to down-regulation of beta-adrenergic receptors and desensitization. Prior evidence from our lab suggests that this may not occur in developing animals. To study this, we measured the response to graded epinephrine infusion [2.7, 5.5, 13.6, 27.3 mumol/(kg.min), (0.5, 1.0, 2.5, 5.0 micrograms/(kg ...
H M, Stein   +4 more
openaire   +2 more sources

In Vitro Effects of Beta-2 Agonists on Skeletal Muscle Differentiation, Hypertrophy, and Atrophy

open access: yesWorld Allergy Organization Journal, 2012
Background Beta-2 agonists are widely used in the treatment of asthma and chronic obstructive pulmonary disease for their effect on airway smooth muscle relaxation.
Francesca Wannenes, PhD   +6 more
doaj   +1 more source

Comparison of antimuscarinic drugs to beta adrenergic agonists in overactive bladder: A literary review

open access: yesCurrent Urology, 2021
. Background:. The purpose of this study was to carry an extended literature review to compare antimuscarnics with beta adrenergic agonists (mirabegron) in treatment of overactive bladder. Materials and methods:.
Mudassir M. Wani   +4 more
doaj   +1 more source

Antithetic regulation by β-adrenergic receptors of Gq receptor signaling via phospholipase C underlies the airway β-agonist paradox [PDF]

open access: yesJournal of Clinical Investigation, 2003
beta-adrenergic receptors (betaARs) relax airway smooth muscle and bronchodilate, but chronic beta-agonist treatment in asthma causes increased sensitivity to airway constriction (hyperreactivity) and is associated with exacerbations. This paradox was explored using mice with ablated betaAR genes (betaAR-/-) and transgenic mice overexpressing airway ...
Dennis W, McGraw   +4 more
openaire   +2 more sources

Mirtazapine decreases stimulatory effects of reboxetine on cortisol, adrenocorticotropin and prolactin secretion in healthy male subjects [PDF]

open access: yes, 2004
Reboxetine is a selective noradrenaline reuptake inhibitor, whereas mirtazapine acts as an antagonist at noradrenergic alpha(2), serotonin (5-HT2), 5-HT3 and histamine H-1 receptors.
Baghai, Thomas C.   +2 more
core   +1 more source

Temporal response of ectopic activity in guinea pig ventricular myocardium in response to isoproterenol and acetylcholine

open access: yesFrontiers in Physiology, 2015
Both beta adrenergic and muscarinic receptor stimulation independently potentiate arrhythmogenesis. However, the effect of simultaneous stimulation on arrhythmogenesis is not well known.
Amara eGreer-Short, Steven ePoelzing
doaj   +1 more source

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