Activation of GABAA receptors:: Views from outside the synaptic cleft

被引:255
作者
Glykys, Joseph [3 ]
Mody, Istvan [1 ,2 ]
机构
[1] Univ Calif Los Angeles, David Geffen Sch Med, Dept Neurol, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, Dept Physiol, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, David Geffen Sch Med, Interdept PhD Program Neurosci, Los Angeles, CA 90095 USA
关键词
D O I
10.1016/j.neuron.2007.11.002
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Some GABA(A) receptors (GABA(A)Rs) are activated by low transmitter levels present in the extracellular space and generate an uninterrupted conductance referred to as "tonic." This tonic conductance is highly sensitive to all factors regulating the amount of GABA surrounding the neurons. Only a few GABAARs with particular subunit combinations are well suited to mediate the tonic conductance. These same receptors constitute important and specific targets for various endogenous and exogenous neuroactive compounds and possible therapeutic targets.
引用
收藏
页码:763 / 770
页数:8
相关论文
共 83 条
[1]   Extrasynaptic glutamate spillover in the hippocampus: Dependence on temperature and the role of active glutamate uptake [J].
Asztely, F ;
Erdemli, G ;
Kullmann, DM .
NEURON, 1997, 18 (02) :281-293
[2]   L-655,708 enhances cognition in rats but is not proconvulsant at a dose selective for α5-containing GABAA receptors [J].
Atack, John R. ;
Bayley, Peter J. ;
Seabrook, Guy R. ;
Wafford, Keith A. ;
McKernan, Ruth M. ;
Dawson, Gerard R. .
NEUROPHARMACOLOGY, 2006, 51 (06) :1023-1029
[3]   Relationship between tonic inhibitory currents and phasic inhibitory activity in the spinal cord lamina II region of adult mice [J].
Ataka, Toyofumi ;
Gu, Jianguo G. .
MOLECULAR PAIN, 2006, 2
[4]   NONVESICULAR RELEASE OF NEUROTRANSMITTER [J].
ATTWELL, D ;
BARBOUR, B ;
SZATKOWSKI, M .
NEURON, 1993, 11 (03) :401-407
[5]   Neurosteroids:: Endogenous regulators of the GABAA receptor [J].
Belelli, D ;
Lambert, JJ .
NATURE REVIEWS NEUROSCIENCE, 2005, 6 (07) :565-575
[6]   Development of a tonic form of synaptic inhibition in rat cerebellar granule cells resulting from persistent activation of GABA(A) receptors [J].
Brickley, SG ;
CullCandy, SG ;
Farrant, M .
JOURNAL OF PHYSIOLOGY-LONDON, 1996, 497 (03) :753-759
[7]   Synaptic release generates a tonic GABAA receptor-mediated conductance that modulates burst precision in thalamic relay neurons [J].
Bright, Damian P. ;
Aller, M. Isabel ;
Brickley, Stephen G. .
JOURNAL OF NEUROSCIENCE, 2007, 27 (10) :2560-2569
[8]   Pharmacological characterization of a novel cell line expressing human α4β3δ GABAA receptors [J].
Brown, N ;
Kerby, J ;
Bonnert, TP ;
Whiting, PJ ;
Wafford, KA .
BRITISH JOURNAL OF PHARMACOLOGY, 2002, 136 (07) :965-974
[9]  
Burgard EC, 1996, MOL PHARMACOL, V50, P119
[10]   Tonic inhibition in mouse hippocampal CA1 pyramidal neurons is mediated by α5 subunit-containing, γ-aminobutyric acid type A receptors [J].
Caraiscos, VB ;
Elliott, EM ;
You-Ten, KE ;
Cheng, VY ;
Belelli, D ;
Newell, JG ;
Jackson, MF ;
Lambert, JJ ;
Rosahl, TW ;
Wafford, KA ;
MacDonald, JF ;
Orser, BA .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2004, 101 (10) :3662-3667