Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"beta-adrenergic receptors"”.
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Reciprocal Relationships Between the Neuroendocrine System and Lymphoid Cells
… and cathecholamines. Lymphoid cells possess receptors for both of these stress-related hormones, and activation of these receptors affects functional activities of lymphoid cells. In the present experiments, it is demonstrated that activation of porcine splenocytes with concanavalin A results …
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INFLUENCE OF BIOGENIC AMINES ON BOVINE LUTEAL STEROIDOGENESIS
… and epinephrine was mediated by both $\beta\sb{1}$- and $\beta\sb{2}$- adrenergic receptors. The alternative pathway catecholamines octopamine, synephrine and deoxyepinephrine enhanced basal progesterone production, and this response was mediated by $\beta$-adrenergic receptors. Analysis …
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Sex differences in the cardiac beta-adrenergic receptor contractile response
… difference is not present following menopause. &beta-adrenergic receptors are pharmaceutical targets in the treatment of cardiovascular disease, and sex differences in &beta-adrenergic responsiveness have been demonstrated. However, limited studies have addressed the mechanism(s) underlying these …
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The Mechanisms Underlying Olfactory Vicarious Fear Learning in Rats
… On the other hand, the injection of an adrenergic receptor antagonist into an observer prior to vicarious learning did significantly block vicarious learning. Ultimately, isolating fear pheromones and targeting beta-adrenergic receptors in the observer had the greatest effect on a rat’s …
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GPCR Activation of the G Protein-Gated Inward-Rectifier Potassium Channel
… rate by stimulating different G protein-coupled receptors (GPCRs), which in turn activate ion channels that modify the electrical properties of cardiac pacemaker cells. Sympathetic stimulation accelerates heart rate through activation of beta-adrenergic receptors (βARs), which open excitatory ion …
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GPCR to Channel Communication in a Membrane Signaling Pathway
<p>G-protein-coupled receptors (GPCRs) regulate a variety of downstream effector proteins, making them essential for many physiological processes. For example, in the heart, the activation of beta-adrenergic receptors (βARs) and the stimulatory G protein (Gαs) leads to the opening of downstream …
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Effects of ractopamine hydrochloride on nutrient digestibility, environmental N excretion, regulation of skeletal muscle growth, and beta-receptor subtypes in finishing beef steers
Beta-adrenergic agonists such as ractopamine hydrochloride (Actogain, Zoetis, Parsippany, NJ) are growth-promoting technologies that when fed at the end of the finishing period in cattle act as repartitioning agents, redirecting energy toward protein accretion and away from lipid deposition. …
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Characterization of the Beta-2 Adrenergic Receptor Mechanism in Bovine Neutrophils, and Some Effects of Inflammatory Stimuli on its Function
… nervous system. In particular, activation of the beta2-adrenergic receptor on these cells decreases several aspects of inflammatory activity, including reactive oxygen species production, chemotaxis, degranulation, and inflammatory mediator production. Dysfunction of beta-adrenergic receptors is …
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Using prophylactics to improve resistance against Enterobacteriaceae in chickens
… mechanism. Furthermore, inhibition of beta-adrenergic receptors as well as recombinant EGF suppressed reserpine-induced Salmonella resistance. Furthermore, explant treatment with rapamycin, an mTOR inhibitor, increased Salmonella killing similar to reserpine treatment. Lastly, we found …