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@ARTICLE{Qi:827656,
author = {Qi, Guanxiao and van Aerde, Karlijn and Abel, Ted and
Feldmeyer, Dirk},
title = {{A}denosine {D}ifferentially {M}odulates {S}ynaptic
{T}ransmission of {E}xcitatory and {I}nhibitory
{M}icrocircuits in {L}ayer 4 of {R}at {B}arrel {C}ortex},
journal = {Cerebral cortex},
volume = {27},
number = {9},
issn = {1460-2199},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {FZJ-2017-01770},
pages = {4411–4422},
year = {2017},
abstract = {Adenosine is considered to be a key regulator of sleep
homeostasis by promoting slow-wave sleep through inhibition
of the brain's arousal centers. However, little is known
about the effect of adenosine on neuronal network activity
at the cellular level in the neocortex. Here, we show that
adenosine differentially modulates synaptic transmission
between different types of neurons in cortical layer 4 (L4)
through activation of pre- and/or postsynaptically located
adenosine A1 receptors. In recurrent excitatory connections
between L4 spiny neurons, adenosine suppresses synaptic
transmission through activation of both pre- and
postsynaptic A1 receptors. In reciprocal excitatory and
inhibitory connections between L4 spiny neurons and
interneurons, adenosine strongly suppresses excitatory
transmission via activating presynaptic A1 receptors but
only slightly suppresses inhibitory transmission via
activating postsynaptic A1 receptors. Adenosine has no
effect on inhibitory transmission between L4 interneurons.
The effect of adenosine is concentration dependent and first
visible at a concentration of 1 μM. The effect of adenosine
is blocked by the specific A1 receptor antagonist,
8-cyclopentyltheophylline or the nonspecific adenosine
receptor antagonist, caffeine. By differentially affecting
excitatory and inhibitory synaptic transmission, adenosine
changes the excitation–inhibition balance and causes an
overall shift to lower excitability in L4 primary
somatosensory (barrel) cortical microcircuits.},
cin = {INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-2-20090406},
pnm = {571 - Connectivity and Activity (POF3-571)},
pid = {G:(DE-HGF)POF3-571},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27522071},
UT = {WOS:000407847800010},
doi = {10.1093/cercor/bhw243},
url = {https://juser.fz-juelich.de/record/827656},
}