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1 SNc and VTA dopamine neurons receive contrasting excitat
2 eriment 2, lesions that disconnected CeA and SNc prevented the acquisition of conditioned ORs but did
4 ive effects of PPX on striatal DA levels and SNc DA neuron survival were similar in young and aged an
8 different release mechanisms in striatum and SNc, with minimal Ca(2+) required to trigger prolonged D
9 influencing dopamine neurons of the VTA and SNc and differentially desensitizing alpha7* and non-alp
10 osphate levels were decreased in the VTA and SNc but not the prefrontal cortex after 6-OHDA lesions.
11 Here, we show that, although both VTA and SNc DA neuron activation reinforces instrumental respond
12 male and female rats, we reveal that VTA and SNc dopamine neurons generate reinforcement through sepa
20 ects to the ventral tegmental area (VTA) and SNc, but neither MSt nor Area X projects to the SNr.
21 l dopaminergic activity and function both at SNc dopaminergic neurons and at a locus downstream of th
22 l data showed a positive correlation between SNc-related FC and SMN activity, whereas a negative corr
24 immunoreactivity for group I mGluRs in both SNc and SNr neurons was mostly extrasynaptic or in the m
28 ylase (TH) in the substantia nigra compacta (SNc) and in two subdivisions of the ventral tegmental ar
29 bral field (RRF), substantia nigra compacta (SNc), ventral tegmental area (VTA), and ventrolateral pe
32 urons in the substantia nigra pars compacta (SNc) and consequent depletion of striatal dopamine are k
34 rones in the substantia nigra pars compacta (SNc) and may contribute to excitotoxic cell death in Par
37 urons of the substantia nigra pars compacta (SNc) and the importance of protein aggregation in drivin
38 urons in the substantia nigra pars compacta (SNc) and the presence of intracytoplasmatic inclusions k
39 ons from the substantia nigra pars compacta (SNc) and ventral tegmental area (VTA) are involved in va
40 urons of the substantia nigra pars compacta (SNc) and ventral tegmental area (VTA) play a crucial rol
41 centers, the substantia nigra pars compacta (SNc) and ventral tegmental area (VTA), densely innervate
43 ea (VTA) and substantia nigra pars compacta (SNc) are not significantly modulated by anesthetics or t
46 tions of the substantia nigra pars compacta (SNc) differentially degenerate in Parkinson's disease an
47 f the rodent substantia nigra pars compacta (SNc) display varied electrophysiological properties in v
48 acterized by substantia nigra pars compacta (SNc) dopamine (DA) neuron loss and subsequent motor defi
50 blished that substantia nigra pars compacta (SNc) dopamine neurons are a key node in the circuitry th
51 the loss of substantia nigra pars compacta (SNc) dopaminergic neurons in Parkinson's disease (PD).
52 t spiking in substantia nigra pars compacta (SNc) dopaminergic neurons is a key signaling event in th
53 activity of substantia nigra pars compacta (SNc) dopaminergic neurons, elevated baseline extracellul
54 he firing of substantia nigra pars compacta (SNc) dopaminergic neurons, we identified and characteriz
55 he mammalian substantia nigra pars compacta (SNc) evokes increasing activation of MLR cells with a gr
56 urons of the substantia nigra pars compacta (SNc) exhibit functional heterogeneity that likely underp
57 urons of the substantia nigra pars compacta (SNc) govern movements requires a detailed knowledge of h
58 DANs) in the substantia nigra pars compacta (SNc) have been related to movement speed, and loss of th
60 tions to the substantia nigra pars compacta (SNc) is sufficient to suppress dopamine release in the d
64 from that in substantia nigra pars compacta (SNc) neurons, where subthreshold calcium current plays a
65 nger in monkey than in rat SN pars compacta (SNc) neurons, whereas a moderate level of mGluR5 immunor
68 urons in the substantia nigra pars compacta (SNc) of C57bl/6J mice following MPTP administration (20
69 ctors in the substantia nigra pars compacta (SNc) on one side of the brain; the other side remained a
73 cells in the substantia nigra pars compacta (SNc) respond immediately to unexpected conditioned stimu
74 lease in the substantia nigra pars compacta (SNc) shows a limited dependence on extracellular calcium
75 ncluding the substantia nigra pars compacta (SNc) subpopulation that preferentially degenerates in Pa
76 n the monkey substantia nigra pars compacta (SNc) that retains past learned reward values stably.
77 tor into the substantia nigra pars compacta (SNc) to investigate its influence on nigrostriatal dopam
78 ea (VTA) and substantia nigra pars compacta (SNc) to that of axonal dopamine release in the dorsal st
79 ay, from the substantia nigra pars compacta (SNc) to the dorsal striatum, and on related functions re
80 AAV into the substantia nigra pars compacta (SNc) transduced both dopaminergic and non-dopaminergic n
81 orogold into substantia nigra pars compacta (SNc) were combined with larger injections of True Blue i
82 urons of the substantia nigra pars compacta (SNc) were found to exhibit sustained responses related t
83 (SC), to the substantia nigra pars compacta (SNc) where direct synaptic contacts are made with both d
84 urons in the substantia nigra pars compacta (SNc), but not in ventral tegmental area or substantia ni
87 urons of the substantia nigra pars compacta (SNc), in addition to many other regions, including neoco
88 ea (VTA) and substantia nigra pars compacta (SNc), no clear evidence for separate structures in anamn
89 DaNs) of the substantia nigra pars compacta (SNc), resulting in the characteristic hypokinesia in pat
91 that, in the substantia nigra pars compacta (SNc), the pacemaking relies more on Ca(2+) channels and
92 e neurons in substantia nigra pars compacta (SNc), whereas matrix neurons receive sensorimotor inputs
108 logue of the substantia nigra pars compacta (SNc)/ventral tegmental area (VTA) is present in lamprey,
110 tic LRRK2 carriers showed globally decreased SNc volume and CNR suggesting early nigral neurodegenera
112 e a functional distribution among excitatory SNc afferent nuclei in response to cocaine, and suggest
114 drial insufficiency in all DaNs, exclusively SNc neurons showed an oxidized redox-system, i.e., a low
116 odulate key signaling pathways important for SNc DA neuron survival and/or proper motor control.
117 t evidence that CPu axons and terminals from SNc dopaminergic neurons can be destroyed after neurotox
119 n optogenetic strategy to isolate identified SNc inputs and determine whether cocaine sensitivity in
121 as significantly decreased (89%, P<0.005) in SNc, and there was a near-complete loss of GPX m-RNA in
122 ing acetylation, decreased MnSOD activity in SNc dopaminergic neurons, whereas mutagenesis of lysine
124 ts form functional NMDA receptor channels in SNc dopaminergic neurones, and suggest that they may for
125 ced Ca2+ mobilization and inward currents in SNc dopamine neurons, both of which were potentiated by
126 cts may reduce the risk of excitotoxicity in SNc DA neurons and may also counteract the increased eff
127 GS) proteins, whether primarily expressed in SNc DA neurons (RGS6), striatal neurons (RGSs 4 and 9),
129 This might lead to a higher Ca(2+) load in SNc DA neurons and explain their higher susceptibility t
130 efore show that the constant calcium load in SNc DaNs is counterbalanced by a high mitochondrial inne
131 rs reticulata (SNr) than on those located in SNc, revealing the existence of two synaptically distinc
136 for the first time, regulation of NMDARs in SNc dopaminergic neurones by changes in intracellular Ca
139 he mitochondrial antioxidant defense only in SNc DaNs, and thus promote the increased vulnerability o
144 variations helped us clarify this result: in SNc DA neurons, the complexity of the ABD combined with
147 egulators of D(2)R-Galpha (i/o) signaling in SNc DA neurons and striatal medium spiny neurons, respec
151 perinuclear mitochondrial oxidant stress in SNc dopaminergic neurons, providing a potential basis fo
153 eristic PD hallmarks in aged mice, including SNc DA neuron loss, motor deficits, and alpha-synuclein
155 the retrograde tracer Fluoro-Gold (FG) into SNc, the rats received pairings of a visual CS with food
157 ogical properties between medial and lateral SNc neurons modulated by cholinergic neurotransmission.
158 e neurons are confined to the caudal-lateral SNc and project to the caudate tail, which encodes long-
160 ation of cholinergic terminals in the medial SNc decreased locomotion, whereas activation in the late
163 s revealed the expression of Nav 1.2 by most SNc neurons and a small proportion expressing Nav 1.6.
165 ine whether cocaine sensitivity in the mouse SNc circuit is conferred at the level of three glutamate
166 s, calbindin-positive and calbindin-negative SNc neurons differ substantially in their calcium channe
167 l tegmental area (VTA) and substantia nigra (SNc) are crucial for this process, via engagement of a r
168 l tegmental area (VTA) and substantia nigra (SNc) encode reward prediction errors (RPEs) and are prop
169 (FR) was injected into the substantia nigra (SNc) to label dopaminergic axons and terminals in the ca
170 tions were assessed in the substantia nigra (SNc), dentate and caudate nucleus, red nucleus, putamen
171 rgic neurons (DaNs) in the substantia nigra (SNc), whereas DaNs in the neighboring ventral tegmental
172 rticular, the dopaminergic substantia nigra (SNc)-related nigrostriatal pathway is structurally and f
174 ctrical stimulation to the substantia nigra (SNc)/ventral tegmental area (VTA) after the random onset
176 rrent study we found that while 88 +/- 2% of SNc neurons labelled by the neuronal marker NeuN were co
178 ptor antagonism or optogenetic activation of SNc DAergic neurons reverse SSRI-induced motor deficits.
180 ir function, leading to accelerated aging of SNc DA neurons, particularly in the face of genetic or e
181 the burst-firing activity characteristic of SNc mDA neurons was drastically reduced in the absence o
185 We also found that the relative extension of SNc neuron dendrites into the SNr dictated overall GABAe
186 Aged SNCA-OVX mice exhibit reduced firing of SNc dopamine neurons in vivo measured by juxtacellular r
187 ease, the precise movement-related firing of SNc dopaminergic neurons and the resultant striatal dopa
188 These selective events augment inhibition of SNc DA neurons by SNr GABAergic neurons and also temper
190 uggest that the excitation and inhibition of SNc dopamine neurons elicit positive and negative affect
191 s are not received, striosomal inhibition of SNc that is unopposed by excitation results in a phasic
198 ining the electrophysiological properties of SNc DA neurons and their cell-to-cell variations.SIGNIFI
199 of molecular and physiological properties of SNc mDA neurons and impact on feeding behavior in adult
200 lso increased the spontaneous firing rate of SNc neurons, suggesting that activation of somatodendrit
202 pecific predictive learning, and the role of SNc-DA neurons appears limited to reinforcement of instr
203 her number of L-type channels in the soma of SNc DA neurons, as well as a smaller single-channel cond
205 ctivation of somatodendritic M5 receptors on SNc neurons leads to increased neuronal firing, activati
207 to deliver photostimulation into the VTA or SNc and also sought for the compartment where they recei
208 in (NpHR), or control vector into the VTA or SNc, resulting in selective expression of these opsins i
210 e findings reveal that activation of VTA- or SNc-DA neurons engages largely dissociable learning proc
213 input to the MLR originating from the primal SNc that evokes graded locomotor movements.SIGNIFICANCE
215 tors of cell signaling pathways that promote SNc DA neuron survival and/or proper motor control.
216 icompartment modeling on male and female rat SNc DA neurons to determine cell-to-cell variations in A
217 functional NMDA receptors in identified rat SNc dopaminergic neurones, we have analysed the properti
218 nsity are indeed higher in the somata of rat SNc DA neurons and that this current undergoes less inac
220 rded and labeled dopaminergic neurons of rat SNc revealed that they received approximately 8,000 syna
221 hannels during autonomous pacemaking renders SNc DA neurons susceptible to mitochondrial toxins used
225 ng reduction of striatal dopamine terminals, SNc loss of dopamine neurons, and motor-behavior defects
226 dylmethyl]-ethylenediamine), indicating that SNc dopaminergic neurones do not contain functional NR2A
229 rtex, basal forebrain, and brainstem and the SNc is widely perceived as receiving inputs mainly from
230 se immunohistochemistry, to characterize the SNc/VTA efferent and afferent connectivity, and to relat
233 sine hydroxylase (TH)-labeled neurons in the SNc after 6-OHDA-lesions, but did block the amphetamine-
234 ant reduction of dopaminergic neurons in the SNc and dopamine (DA) and tyrosine hydroxylase (TH) leve
235 w ratio can detect PD-related changes in the SNc and may be used as a novel, parsimonious in vivo bio
237 l that short-latency visual responses in the SNc are abolished by ipsilateral lesions of the SC and i
238 examine whether cholinergic signaling in the SNc controls mouse behavior, we used optogenetics in awa
239 t with activation of dopamine neurons in the SNc coupled to previously reported amplification of axon
240 n and alpha-Syn-induced neurotoxicity in the SNc in two distinct mouse models of synucleinopathy.
241 amine (6-OHDA) lesions were conducted in the SNc ipsilateral to, and 6 months after, transduction wit
243 proach confirmed the group difference in the SNc T1w/T2w ratio between PD and controls (p < 0.0001).
244 c acid (CPA) decreased evoked [DA](o) in the SNc, indicating a functional role for ER Ca(2+) stores i
249 In sagittal brain slices that isolate the SNc soma from their striatal terminals, activation of mu
252 Rats received unilateral lesions of the SNc and lesions of the CeA in either the contralateral o
255 e outward current in dopamine neurons of the SNc from wild-type mice, but this current was completely
257 how cholinergic inputs to subregions of the SNc regulate the excitability of DA neurons differential
259 ammalian paranigral VTA, ventral tier of the SNc, interfascicular nucleus of the VTA, and supramamill
260 arger in the soma of dopamine neurons of the SNc, leading to a higher charge transfer through L-type
261 unting of TH-immunoreactive perikarya of the SNc, paranigral (PN) and interfascicular (IF) nucleus wa
262 OHDA) lesions of the dopamine neurons of the SNc, we found that microinjections of bicuculline, a GAB
264 eports from other groups indicating that the SNc receives robust input from many of the same structur
269 learning pathways from limbic cortex to the SNc, one devoted to excitatory conditioning (through the
272 activity in the SMN (hypothetically via the SNc-related nigrostriatal pathway) and SN (hypotheticall
273 and the basal ganglia connectivity with the SNc/VTA are present as part of the evaluation system, as
277 sal tier and calbindin-negative ventral tier SNc dopaminergic neurons in mice comprise functionally d
283 o exhibit longer aversive pauses relative to SNc neurons.SIGNIFICANCE STATEMENT Our study examines re
285 Unfortunately, the mechanisms underlying SNc neurodegeneration remain unclear, and currently ther
287 they received photostimulation into the VTA, SNc, or dorsal striatum, whereas control mice did not.
289 njections of retrograde tracer into the VTA, SNc, RRF, or PAGvl produced labeling in many structures
295 itioning paradigm, and activation of SC->VTA/SNc neurons did not support primary reinforcement or pro
297 alpha7* component of the current in the VTA/SNc is not significantly desensitized by nicotine in the
298 These progressive changes in vulnerable SNc neurons were observed independently of overt protein
300 DLS, even during Pavlovian conditioning with SNc dopamine neuron activation, which elicited robust DL