Functional Dissection of Basal Ganglia Inhibitory Inputs onto Substantia Nigra Dopaminergic Neurons.
Functional Dissection of Basal Ganglia Inhibitory Inputs onto Substantia Nigra Dopaminergic Neurons.
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基底神经节抑制输入对黑质多巴胺能神经元的功能剖析。
DOI:
10.1016/j.celrep.2020.108156
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发表时间:
2020-09-15
期刊:
影响因子:
8.8
通讯作者:
Khaliq, Zayd M.
中科院分区:
文献类型:
--
作者:
Evans, Rebekah C.;Twedell, Emily L.;Zhu, Manhua;Ascencio, Jefferson;Zhang, Renshu;Khaliq, Zayd M.
Substantia nigra (SNc) dopaminergic neurons respond to aversive stimuli with inhibitory pauses in firing followed by transient rebound activation. We tested integration of inhibitory synaptic inputs onto SNc neurons from genetically defined populations in dorsal striatum (striosome and matrix) and external globus pallidus (GPe; parvalbumin- and Lhx6-positive), and examined their contribution to pause-rebound firing. Activation of striosome projections, which target “dendron bouquets” in the pars reticulata (SNr), consistently quiets firing and relief from striosome inhibition triggers rebound activity. Striosomal inhibitory postsynaptic currents (IPSCs) display a prominent GABA-B receptor-mediated component that strengthens the impact of SNr dendrite synapses on somatic excitability and enables rebounding. By contrast, GPe projections activate GABA-A receptors on the soma and proximal dendrites but do not result in rebounding. Lastly, optical mapping shows that dorsal striatum selectively inhibits the ventral population of SNc neurons, which are intrinsically capable of rebounding. Therefore, we define a distinct striatonigral circuit for generating dopamine rebound. Evans et al. functionally map inhibitory inputs onto SNc dopamine neuron dendrites from genetically defined basal ganglia subpopulations. Using two-photon calcium imaging and computational modeling, they reveal a dendrite-specific striatonigral circuit that facilitates dopamine neuron rebound activity.
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影响因子:
3.7
作者:
Davis MI;Crittenden JR;Feng AY;Kupferschmidt DA;Naydenov A;Stella N;Graybiel AM;Lovinger DM
通讯作者:
Lovinger DM
DOI:
10.1523/jneurosci.3833-10.2011
发表时间:
2011-01-26
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Chuhma N;Tanaka KF;Hen R;Rayport S
通讯作者:
Rayport S
影响因子:
16.2
作者:
Banghart MR;Neufeld SQ;Wong NC;Sabatini BL
通讯作者:
Sabatini BL
DOI:
10.1007/978-1-59745-520-6_7
发表时间:
2007-01-01
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Bower, James M;Beeman, David
通讯作者:
Beeman, David
影响因子:
5.3
作者:
Evans, Rebekah C.;Zhu, Manhua;Khaliq, Zayd M.
通讯作者:
Khaliq, Zayd M.