Cross Talk Between A1 and A2A Adenosine Receptors in the Hippocampus and Cortex of Young Adult and Old Rats

LV Lopes, RA Cunha… - Journal of …, 1999 - journals.physiology.org
Adenosine modulates synaptic transmission by acting on inhibitory A1 and facilitatory A2A
receptors, the densities of which are modified in aged animals. We investigated how A2A …

Enhanced Adenosine A2A Receptor Facilitation of Synaptic Transmission in the Hippocampus of Aged Rats

N Rebola, AM Sebastiao… - Journal of …, 2003 - journals.physiology.org
Adenosine either inhibits or facilitates synaptic transmission through A1 or A2A receptors,
respectively. Since A2A receptor density increases in the limbic cortex of aged (24 mo) …

Evidence for functionally important adenosine A2a receptors in the rat hippocampus

RA Cunha, B Johansson, I van der Ploeg, AM Sebastia… - Brain research, 1994 - Elsevier
Adenosine A 2a receptors are not confined to dopamine-rich areas of the brain, since
thermocycling analysis shows that adenosine A 2a receptor mRNA is expressed also in the …

Adenosine A2A receptor facilitation of synaptic transmission in the CA1 area of the rat hippocampus requires protein kinase C but not protein kinase A activation

RA Cunha, JA Ribeiro - Neuroscience letters, 2000 - Elsevier
Adenosine is a neuromodulator in the hippocampus acting mainly via inhibitory A1 receptors
but also via facilitatory A2A receptors. We now investigated the transducing system operated …

Activation of hippocampal adenosine A3 receptors produces a desensitization of A1 receptor-mediated responses in rat hippocampus

TV Dunwiddie, L Diao, HO Kim, JL Jiang… - Journal of …, 1997 - Soc Neuroscience
The adenosine A3 receptor is expressed in brain, but the consequences of activation of this
receptor on electrophysiological activity are unknown. We have characterized the actions of …

Interaction between adenosine A1 and A2 receptor-mediated responses in the rat hippocampus in vitro

EM O'Kane, TW Stone - European journal of pharmacology, 1998 - Elsevier
Previous work has been carried out on the effects of adenosine on transmitter release and
on the excitability of postsynaptic neurones, but little is known about the effects of adenosine …

Adenosine A2A receptor facilitation of hippocampal synaptic transmission is dependent on tonic A1 receptor inhibition

LV Lopes, RA Cunha, B Kull, BB Fredholm, JA Ribeiro - Neuroscience, 2002 - Elsevier
Adenosine tonically inhibits synaptic transmission through actions at A1 receptors. It also
facilitates synaptic transmission, but it is unclear if this facilitation results from pre-and/or …

Adenosine A1 and A3 receptors mediate inhibition of synaptic transmission in rat cortical neurons

A Brand, Z Vissiennon, D Eschke, K Nieber - Neuropharmacology, 2001 - Elsevier
Intracellular recordings were made in rat brain slice preparations containing pyramidal cells
of the associative frontal cortex in order to characterize the action of selective adenosine A1 …

Effect of A2A adenosine receptor stimulation and antagonism on synaptic depression induced by in vitro ischaemia in rat hippocampal slices

S Latini, F Bordoni, R Corradetti… - British journal of …, 1999 - Wiley Online Library
In the present study we investigated the role of A2A adenosine receptors in hippocampal
synaptic transmission under in vitro ischaemia‐like conditions. The effects of adenosine, of …

Different synaptic and subsynaptic localization of adenosine A2A receptors in the hippocampus and striatum of the rat

N Rebola, PM Canas, CR Oliveira, RA Cunha - Neuroscience, 2005 - Elsevier
Adenosine A2A receptors are most abundant in the striatum where they control the
striatopallidal pathway thus controlling locomotion. Extra-striatal A2A receptors are …