Muscarinic Long-Term Enhancement of Tonic and Phasic GABA(A) Inhibition in Rat CA1 Pyramidal Neurons.
Muscarinic Long-Term Enhancement of Tonic and Phasic GABA(A) Inhibition in Rat CA1 Pyramidal Neurons.
复制标题
DOI:
10.3389/fncel.2016.00244
复制
发表时间:
2016
影响因子:
5.3
通讯作者:
Buño W
中科院分区:
文献类型:
--
作者:
Domínguez S;Fernández de Sevilla D;Buño W
Acetylcholine (ACh) regulates network operation in the hippocampus by controlling excitation and inhibition in rat CA1 pyramidal neurons (PCs), the latter through gamma-aminobutyric acid type-A receptors (GABAARs). Although, the enhancing effects of ACh on GABAARs have been reported, its role in regulating tonic GABAA inhibition has not been explored in depth. Therefore, we aimed at determining the effects of the activation of ACh receptors on responses mediated by synaptic and extrasynaptic GABAARs. Here, we show that under blockade of ionotropic glutamate receptors ACh, acting through muscarinic type 1 receptors, paired with post-synaptic depolarization induced a long-term enhancement of tonic GABAA currents (tGABAA) and puff-evoked GABAA currents (pGABAA). ACh combined with depolarization also potentiated IPSCs (i.e., phasic inhibition) in the same PCs, without signs of interactions of synaptic responses with pGABAA and tGABAA, suggesting the contribution of two different GABAA receptor pools. The long-term enhancement of GABAA currents and IPSCs reduced the excitability of PCs, possibly regulating plasticity and learning in behaving animals.
登录
查看更多内容
影响因子:
5.7
作者:
Castillo PE;Chiu CQ;Carroll RC
通讯作者:
Carroll RC
影响因子:
2.9
作者:
BENARDO, LS;PRINCE, DA
通讯作者:
PRINCE, DA
影响因子:
5.3
作者:
Houston, Catriona M.;McGee, Thomas P.;Brickley, Stephen G.
通讯作者:
Brickley, Stephen G.
DOI:
10.1093/cercor/bhv227
发表时间:
2016-01
期刊:
Cerebral cortex (New York, N.Y. : 1991)
影响因子:
--
作者:
Dennis SH;Pasqui F;Colvin EM;Sanger H;Mogg AJ;Felder CC;Broad LM;Fitzjohn SM;Isaac JT;Mellor JR
通讯作者:
Mellor JR
影响因子:
5.3
作者:
Fernandez de Sevilla, David;Nunez, Angel;Buno, Washington
通讯作者:
Buno, Washington