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1 o interneurons, it is as yet unclear whether mossy cell activity's net effect on granule cells is exc
6 hese results indicate that the net effect of mossy cell excitation is to inhibit granule cell activit
9 expressed form of long-term potentiation at mossy cell outputs, shedding light on their mysterious f
11 citatory cell type in the dentate gyrus, the mossy cell, forms an intricate circuit with granule cell
17 findings suggest that the granule cells and mossy cells could be modulated separately and their join
20 classification of dentate granule cells and mossy cells in mice that we validated by optogenetic tag
21 lts provide a functional characterization of mossy cells in the behaving animal and demonstrate their
22 t granule cells fired very sparsely, whereas mossy cells in the hilus fired promiscuously in multiple
24 f the hippocampus; namely, granule cells and mossy cells of the dentate gyrus, and pyramidal cells of
26 and local interneurons, but the influence of mossy cells on dentate function is often overlooked.
29 sy cell synapse was strong and facilitating, mossy cells rarely "inherited" place fields from single
30 converge on the hilus, and excitatory hilar mossy cells redistribute these signals back to granule c
31 e week after injecting toxin into this line, mossy cells throughout the longitudinal axis were degene
33 miniature IPSCs (mIPSCs)recorded from hilar mossy cells without altering event amplitude, area, rise
34 from intra-hippocampal cells (interneurons, mossy cells, area CA3 and transiently, mature granule ce
36 used to measure hilar ectopic granule cells, mossy cells, mossy fiber sprouting, astrogliosis, and GA
37 nd calretinin interneurons, as well as hilar mossy cells, new adult-born neurons, and recently active
38 f hilar ectopic granule cells, the number of mossy cells, the extent of mossy fiber sprouting, the ex
39 upstream synapses between granule cells and mossy cells, with no detectable contribution from NMDA r
47 to the distinct molecular properties of the mossy fiber (MF) and associational-commissural (AC) syna
50 echanisms underlying information transfer at mossy fiber (mf) connections between the dentate gyrus (
51 (PFs) from granule cells (GCs) that receive mossy fiber (MF) input derived from precerebellar nuclei
52 tivation of dentate gyrus PIIs by excitatory mossy fiber (MF) inputs induces Hebbian long-term potent
55 et-specific synapse formation at hippocampal mossy fiber (MF) synapses, which connect dentate granule
57 sibility that the physiological diversity of mossy fiber (MF) to granule cell (GC) synapses in the mo
58 eceive a single glutamatergic synapse from a mossy fiber (MF), which makes them an ideal model to stu
62 istry for NKCC1, KCC2, and ectopic recurrent mossy fiber (rMF) sprouting as well as telemetric electr
64 ental networks, were transiently paired with mossy fiber activation in such a way that the two events
69 conditioned using electrical stimulation of mossy fiber and climbing fiber afferents as CS and US, w
72 stochemical (IHC) studies of the hippocampal mossy fiber axons and boutons using an antibody selectiv
75 te to the pathologic retrograde sprouting of mossy fiber axons, both hallmarks of temporal lobe epile
79 ed the length of the presynaptic membrane of mossy fiber boutons, associated with a de novo formation
80 tive two-photon Ca(2+) imaging in cerebellar mossy fiber boutons, which fire at exceptionally high ra
82 esulted in an increased volume of the axonal mossy fiber bundle projecting from dentate granule cells
84 by modulating the frequency and duration of mossy fiber bursts, probably because STDP expression inv
89 an be released from these cells and modulate mossy fiber excitability through activation of GABAB aut
90 at facilitate filter construction are direct mossy fiber excitation of Golgi cells, variability of sy
92 erved alpha7 nAChR-mediated calcium rises at mossy fiber giant terminals, indicating the presence of
96 combinatorial diversity saturates quickly as mossy fiber input diversity increases, and that this sat
97 e cerebellum receives sensory information by mossy fiber input from a multitude of sources that requi
99 to regulate the response of granule cells to mossy fiber input in lobules 2 and 9 of the rat cerebell
100 e found that long-term potentiation (LTP) of mossy fiber input invoked a large increase in granule ce
104 ular cerebellar cortex receive glutamatergic mossy fiber input on an elaborate brush-like dendrite.
105 drites received significantly more recurrent mossy fiber input through their apical dendrites, indica
106 tput became evident in response to bursts of mossy fiber input, revealing that Kv4 control of intrins
110 anule cells (GrCs) sample approximately four mossy fiber inputs and are thought to form a combinatori
111 on whether individual granule cells receive mossy fiber inputs from multiple precerebellar nuclei or
112 s support that SynCAM 1 modulates excitatory mossy fiber inputs onto both interneurons and principal
113 simulation, cessation of one of two ongoing mossy fiber inputs produces a robust temporal code in th
116 es spatiotemporal information transmitted by mossy fiber inputs with a wide variety of firing pattern
117 receive segregated and functionally distinct mossy fiber inputs, enabling Golgi cells to regulate the
120 cle pool distribution, impaired induction of mossy fiber long-term potentiation and deficits in hippo
121 nstream effector of cAMP that contributes to mossy fiber LTP (MF-LTP), but the potential contribution
122 ber projections to CA3 pyramidal cells place mossy fiber NMDARs in a prime position to influence CA3
125 astrocyte engagement in the fully developed mossy fiber pathway was slow and territorial, contrary t
128 pmental gene expression characteristics with mossy fiber precerebellar nuclei that arise from the cau
129 nd disorganized infrapyramidal bundle of the mossy fiber projection from the dentate gyrus to CA3.
130 que functional properties of both NMDARs and mossy fiber projections to CA3 pyramidal cells place mos
132 ptic response with a subsequent subthreshold mossy fiber response induced long-term potentiation at C
133 the substrate for phase-dependent binding of mossy fiber spikes to repetitive theta-frequency cycles
134 with rapamycin displayed significantly less mossy fiber sprouting (42% of vehicle-treated animals),
135 d status epilepticus in mice, would suppress mossy fiber sprouting and affect the development of spon
138 However, correlations between the extent of mossy fiber sprouting and seizure frequency are weak.
139 t would not have been detected by markers of mossy fiber sprouting in previous studies include surviv
142 on of adult-born granule cells to functional mossy fiber sprouting is unknown, primarily due to techn
143 in sea lions was unilateral in 79% of cases, mossy fiber sprouting was a common neuropathological abn
144 eactivity or Timm-stained, and the extent of mossy fiber sprouting was measured stereologically.
146 ossy fiber sprouting, although the effect on mossy fiber sprouting was reversible after stopping rapa
148 apamycin decreased neuronal degeneration and mossy fiber sprouting, although the effect on mossy fibe
149 age of hilar ectopic DGCs, (2) the amount of mossy fiber sprouting, and (3) the extent of mossy cell
150 re hilar ectopic granule cells, mossy cells, mossy fiber sprouting, astrogliosis, and GABAergic inter
151 granule cells also contributed to functional mossy fiber sprouting, but exhibited less synaptic depre
152 ith TLE and evaluated graft differentiation, mossy fiber sprouting, cellular morphology, and electrop
153 ls, the number of mossy cells, the extent of mossy fiber sprouting, the extent of astrogliosis, or th
162 nitor fine-structural changes at hippocampal mossy fiber synapses associated with chemically induced
163 bserved at CA3 associational/commissural and mossy fiber synapses but not CA1 Schaffer collateral syn
166 d frequency-dependent facilitation, sprouted mossy fiber synapses from adult-born cells exhibited pro
169 urthermore, we tested synaptic plasticity of mossy fiber synapses in area CA3 and found increased lon
170 Surprisingly, however, although healthy mossy fiber synapses in CA3 are well characterized "deto
173 ic transmission (KAR LTD) at rat hippocampal mossy fiber synapses relieves inhibition of the sAHP by
180 hat locomotion can be directly read out from mossy fiber synaptic input and spike output in single gr
184 tial patterns of calcium elevations in giant mossy fiber terminals and support short-term facilitatio
185 rain sections from both mice and rats showed mossy fiber terminals as a group of large (2-5 mum in di
188 labeled somata in the cerebellar nuclei and mossy fiber terminals in the cerebellar granule layer, c
190 that, in the developing rodent hippocampus, mossy fiber terminals release GABA together with glutama
193 activation of the Erk1/2 MAPK in hippocampal mossy fiber terminals, disinhibition of zinc-sensitive M
194 the morphological characteristics of typical mossy fiber terminals, the functional characteristics of
197 t long-term potentiation induction at single mossy fiber termini of dentate gyrus neurons in adult mo
198 ded into presynaptic vesicles in hippocampal mossy fiber termini upon KCl-induced depolarization, whi
199 xcitatory postsynaptic potential evoked by a mossy fiber that enhances NMDA receptor-mediated current
200 and morphological maturation of hippocampal mossy fiber to CA3 pyramidal cell (mf-CA3) synapses is d
205 ings of learning related potentiation at the mossy fiber to nuclear cell synapse and mossy fiber to g
209 way with rapamycin blocks granule cell axon (mossy fiber) sprouting after epileptogenic injuries, inc
210 contrast to the CA3-CA1 pathway, LTP in the mossy fiber-CA3 projection did not depend on MMP-3, indi
214 on both P/Q- and N-type VGCCs at hippocampal mossy fiber-CA3 synapses, the specific contribution of V
215 ermits efficacious homeostatic adjustment of mossy fiber-CA3 synapses, while preserving synaptic weig
217 orm of plasticity imparts bimodal control of mossy fiber-driven CA3 burst firing and spike temporal f
220 ikes at 6-10 Hz reliably induced STDP at the mossy fiber-granule cell synapse, with potentiation and
225 s short-term plasticity in a Purkinje cell's mossy fiber/parallel-fiber input pathways; 2) complex-sp
226 splayed a major impairment in cAMP-dependent mossy-fiber long-term potentiation (LTP) in the CA3 regi
227 ufficient to impair the function of Syt12 in mossy-fiber LTP, suggesting that cAMP-dependent phosphor
230 ctivity, spontaneous behavioral seizures, or mossy-fiber sprouting 5-6 weeks after mossy cell degener
231 ential for cAMP-dependent presynaptic LTP at mossy-fiber synapses, and a single amino-acid substituti
232 A-knockin impaired the long-term increase in mossy-fiber synaptic transmission induced by forskolin.
233 the hypothesis that zinc within vesicles of mossy fibers (mf) contributes to mf-LTP, a classical for
237 n of function begins with the segregation of mossy fibers across 10 distinct lobules over the rostroc
238 r learning requires context information from mossy fibers and a teaching signal through the climbing
240 ion independently activates primary afferent mossy fibers and tertiary afferent climbing fibers that
241 proprioception are randomly mixed in spinal mossy fibers and that properties of granule cells are co
243 eport that subthreshold potentials evoked by mossy fibers are sufficient to induce synaptic plasticit
245 ate CN activity; collaterals of climbing and mossy fibers are two, and the remaining two are provided
246 Our results suggest that, although sprouted mossy fibers form recurrent excitatory circuits with som
248 r reorganization, including the sprouting of mossy fibers in the dentate gyrus; they establish aberra
249 the epileptic brain, inhibited sprouting of mossy fibers in the hippocampus, and prevented the progr
250 ression in loose clusters of spinocerebellar mossy fibers in the mouse AZ/PZ, whereas in rat CART imm
251 creased in axons but not synaptic boutons of mossy fibers in ZnT3 knockout mice that lack vesicular z
252 findings show that activation of hippocampal mossy fibers induces pre- and postsynaptic structural ch
254 sensorimotor information carried by incoming mossy fibers is transformed before it is conveyed to Pur
256 gnatures of the specialized contacts between mossy fibers of dentate granule cells and thorny excresc
257 Brush Cells (UBCs), which generate intrinsic mossy fibers relaying vestibular inputs to the cerebella
259 se AZ/PZ, whereas in rat CART immunoreactive mossy fibers terminated predominantly in the CZ/NZ.
262 NT The common assumption that all cerebellar mossy fibers uniformly collateralize to the cerebellar n
263 but that the BDNF protein is present within mossy fibers which originate from cells located outside
264 s through aberrant sprouting of their axons (mossy fibers), which is found in many patients and anima
265 orm modeling of sparse and filopodia-bearing mossy fibers, finding that these circuit features unique
266 co-localize in the terminals of hippocampal mossy fibers, olfactory sensory neuron axons, and growth
267 in axons and synaptic boutons of hippocampal mossy fibers, thereby implicating BDNF in activation of
268 nuclei/spinal cord neurons that give rise to mossy fibers--and promotes GABAergic synapse formation a
274 uit often assume that input signals from the mossy-fibers are expanded and recoded to provide a found
276 sential for the lamina-specific targeting of mossy fibre axons onto CA3 pyramidal neurons in the deve
277 epticus, there were significant increases in mossy fibre bouton size, faster rates of action potentia
278 We also analysed the ultrastructure of rat mossy fibre boutons using transmission electron microsco
279 l that movement is accompanied by changes in mossy fibre input rate that drive membrane potential dep
282 sicular release and recycling in hippocampal mossy fibre presynaptic boutons, we used (i) two-photon
283 of the hippocampus and co-localization with mossy fibre sprouting, a feature of temporal lobe epilep
284 ne vesicle mobility at excitatory cerebellar mossy fibre synapses which sustain transmission over a b
286 nce of Purkinje cell activity can facilitate mossy fibre-driven spiking by CbN cells, in turn driving
288 synapses with CA3 pyramidal cells via large mossy-fibre boutons, but rather to all synapses formed b
289 l glutamatergic synaptic transmission at the mossy-fibre synapse because the amplitude, input-output
291 ce demonstrate that synaptic excitation from mossy fibres becomes more effective at increasing the ra
297 Unfortunately, uncontrolled dendritic and mossy lithium growth, as well as electrolyte decompositi
298 wever, the lithium anode forms dendritic and mossy metal deposits, leading to serious safety concerns
299 nditioning, the CS and US are transmitted by mossy/parallel fibers and climbing fibers to cerebellar
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