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Title: GABA Transporter-1 Activity Modulates Hippocampal Theta Oscillation and Theta Burst Stimulation-Induced Long-Term Potentiation
Author: Gong, Neng ; Li, Yong ; Cai, Guo-Qiang ; Niu, Rui-Fang ; Fang, Qi ; Wu, Kun ; Chen, Zhong ; Lin, Long-Nian ; Xu, Lin ; Fei, Jian ; Xu, Tian-Le(徐天乐)
Source: JOURNAL OF NEUROSCIENCE
Issued Date: 2009
Volume: 29, Issue:50, Pages:15836-15845
Keyword: INHIBITORY SYNAPTIC POTENTIALS ; AMINOBUTYRIC-ACID UPTAKE ; DENTATE GYRUS ; IN-VIVO ; RAT ; INDUCTION ; MICE ; NEURONS ; MEMORY ; LTP
Subject: Neurosciences & Neurology
Corresponding Author: Xu, TL (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Neurosci, 320 Yue Yang Rd, Shanghai 200031, Peoples R China,tlxu@ion.ac.cn
English Abstract: The network oscillation and synaptic plasticity are known to be regulated by GABAergic inhibition, but how they are affected by changes in the GABA transporter activity remains unclear. Here we show that in the CA1 region of mouse hippocampus, pharmacological blockade or genetic deletion of GABA transporter-1 (GAT1) specifically impaired long-term potentiation (LTP) induced by theta burst stimulation, but had no effect on LTP induced by high-frequency stimulation or long-term depression induced by low-frequency stimulation. The extent of LTP impairment depended on the precise burst frequency, with significant impairment at 3-7 Hz that correlated with the time course of elevated GABAergic inhibition caused by GAT1 disruption. Furthermore, in vivo electrophysiological recordings showed that GAT1 gene deletion reduced the frequency of hippocampal theta oscillation. Moreover, behavioral studies showed that GAT1 knock-out mice also exhibited impaired hippocampus-dependent learning and memory. Together, these results have highlighted the important link between GABAergic inhibition and hippocampal theta oscillation, both of which are critical for synaptic plasticity and learning behaviors.
Indexed Type: SCI
Language: 英语
Content Type: 期刊论文
URI: http://ir.sibs.ac.cn/handle/331001/1624
Appears in Collections:神经所(总)_期刊论文

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Gong, Neng; Li, Yong; Cai, Guo-Qiang; Niu, Rui-Fang; Fang, Qi; Wu, Kun; Chen, Zhong; Lin, Long-Nian; Xu, Lin; Fei, Jian; Xu, Tian-Le.GABA Transporter-1 Activity Modulates Hippocampal Theta Oscillation and Theta Burst Stimulation-Induced Long-Term Potentiation,JOURNAL OF NEUROSCIENCE,2009,29(50):15836-15845
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