Results 41 to 50 of about 761,976 (296)

ATP- and Adenosine-Mediated Signaling in the Central Nervous System: Adenosine Stimulates Glutamate Release From Astrocytes via A2a Adenosine Receptors

open access: yesJournal of Pharmacological Sciences, 2004
Adenosine enhanced intracellular Ca2+ concentrations in astrocytes via A2a adenosine receptors involving protein kinase A (PKA) activation. The Ca2+ rise is inhibited by brefeldin A, an inhibitor of vesicular transport; but not by neomycin and U73122 ...
Tomoyuki Nishizaki
doaj   +1 more source

Adenosine receptors and reperfusion injury of the heart [PDF]

open access: yes, 2009
Adenosine, a catabolite of ATP, exerts numerous effects in the heart, including modulation of the cardiac response to stress, such as occurs during myocardial ischemia and reperfusion.
Lasley, RD   +5 more
core   +1 more source

Activity-dependent adenosine release may be linked to activation of Na+-K+ ATPase : an in vitro rat study [PDF]

open access: yes, 2014
In the brain, extracellular adenosine increases as a result of neuronal activity. The mechanisms by which this occurs are only incompletely understood. Here we investigate the hypothesis that the Na+ influxes associated with neuronal signalling activate ...
Sims, Robert E.   +6 more
core   +2 more sources

ATP as a Multi-target Danger Signal in the Brain

open access: yesFrontiers in Neuroscience, 2015
ATP is released in an activity-dependent manner from different cell types in the brain, fulfilling different roles as a neurotransmitter, neuromodulator, astrocyte-to-neuron communication, propagating astrocytic responses and formatting microglia ...
Ricardo J Rodrigues   +4 more
doaj   +1 more source

Sleep-wake sensitive mechanisms of adenosine release in the basal forebrain of rodents : an in vitro study [PDF]

open access: yes, 2013
Adenosine acting in the basal forebrain is a key mediator of sleep homeostasis. Extracellular adenosine concentrations increase during wakefulness, especially during prolonged wakefulness and lead to increased sleep pressure and subsequent rebound sleep.
Sims, Robert E.   +11 more
core   +2 more sources

Adenosine in the Thymus

open access: yesFrontiers in Pharmacology, 2017
Adenosine is an ancient extracellular signaling molecule that regulates various biological functions via activating four G-protein-coupled receptors, A1, A2A, A2B, and A3 adenosine receptors. As such, several studies have highlighted a role for adenosine
Krisztina Köröskényi   +5 more
doaj   +1 more source

In Vivo Positron Emission Tomography Imaging of Adenosine A2A Receptors

open access: yesFrontiers in Pharmacology, 2020
As an invasive nuclear medical imaging technology, positron emission tomography (PET) possess the possibility to imaging the distribution as well as the density of selective receptors via specific PET tracers.
Meng-Juan Sun   +5 more
doaj   +1 more source

Presynaptic Purinergic Modulation of the Rat Neuro-Muscular Transmission

open access: yesCurrent Issues in Molecular Biology, 2023
ATP, being a well-known universal high-energy compound, plays an important role as a signaling molecule and together with its metabolite adenosine they both attenuate the release of acetylcholine in the neuro-muscular synapse acting through membrane P2 ...
Adel E. Khairullin   +2 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

open access: yesFEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg   +14 more
wiley   +1 more source

ALTERED EXPRESSION AND FUNCTIONALITY OF A2A ADENOSINE RECEPTORS IN HUNTINGTON’S DISEASE AND OTHER POLYGLUTAMINE DISORDERS [PDF]

open access: yes, 2009
Several studies have suggested the possible involvement of A2A adenosine receptors in the pathogenesis of neuronal disorders, including Huntington’s disease.
Vincenzi, Fabrizio
core  

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