telencephalon

..As D2-40 antibody recognizes cell surface antigen M2A, it might be a candidate cell surface marker for isolation of human neural stem cells/neuronal lineage cells in the fluorescence-activated cell sorting technique...

..In particular, the outdated terminology implies that most of the avian telencephalon is a hypertrophied basal ganglia, when it is now clear that most of the avian telencephalon is neurochemically,..

..Therefore, the characteristic cellular expression and subcellular distribution of JSAP1 might be beneficial for cells to efficiently link external stimuli to the JNK MAPK pathway and other intracellular machineries...

Considerably less attention has been given to understanding the cellular components of gliogenesis in the telencephalon when compared to neuronogenesis, despite the necessity of normal glial cell formation for neurological function...

..the expression pattern of both the known (delta1) and the new (delta2) isoforms in the human and monkey telencephalon. ENaC delta2 is produced by a combination of alternative transcription start sites, a frame shift in exon 3 ..

..We sketch a simplified model, in which the secondary prosencephalon (telencephalon plus hypothalamus) is a complex protosegment not subdivided into prosomeres, which exhibits patterning ..

..Based on significant mismatches between alpha 4/delta and gamma mRNAs, we suggest that in vivo, the alpha 4 subunit contributes to GABAA receptors that lack BZ modulation...

..In the telencephalon, the Ngns and Mash1 are expressed at high levels in complementary dorsal and ventral domains, respectively...

..Transcriptional profiling indicates a substantial representation of transit amplifying neuroblasts in SFD cultures not exposed to RA...

..that microRNA-9 (miR-9) controls neural progenitor proliferation and differentiation in the developing telencephalon by regulating the expression of multiple transcription factors...

..Thus, in the absence of caudalizing signals, floating aggregates of ES cells generate naive telencephalic precursors that acquire subregional identities by responding to extracellular patterning signals...

..In addition to providing functional evidence for Lhx2 selector activity, these findings show that the cortical hem is a hippocampal organizer...

..These findings indicated that the type of conspecific vocalization, as well as the sex of the listener, appear to modulate IEG expression in the songbird ascending auditory pathway...

..xTbr1) gene and analyzed its expression compared with that of the genes xEomes (Tbr2) and xEmx1 in the telencephalon of the frog Xenopus laevis during embryonic and larval development...

..This mechanism can extract information about combinations of molecular features from ensembles of active and inactive mitral cells, suggesting that pattern processing in Dp establishes representations of odor objects...

..along the lateral thalamic surface, and as they approach hypothalamus make a lateral turn into ventral telencephalon. In vitro studies show that hypothalamus releases a chemorepellent for TCAs, and analyses of knockout mice ..

..transcriptional repressor that plays a key role in the specification, proliferation and differentiation of the telencephalon, and is expressed from the earliest stages of telencephalic development through to the adult...

..In the telencephalon, this complexity is enhanced by an organization of the ventricular zone (VZ) in fast and slow-dividing domains,..

..topography of thalamocortical (TC) axon projections is initiated before they reach the cortex, in the ventral telencephalon (VTel)...

..Curr. Opin. Genet. Dev. 8, 423-429). We have studied the expression of these genes in the mouse telencephalon and found that Meis1 and Meis2 display region-specific patterns of expression from embryonic day (E)10...

..We suggest that the activity of this network confers resistance to TGF-beta-mediated cytostasis during the development of the telencephalic neuroepithelium and in glioblastoma brain tumor cells...

..In the more lateral region of telencephalon, Emx2-deficiency may be compensated for by Emx1 and vice versa...

..The diencephalic transcription factor OTP was necessary for this migratory behavior...

..The expanded neuroepithelium generates abundant neurons for the medial hypothalamus at the tuberal level. Finally, we have uncovered novel diencephalon-to-telencephalon migrations into septum, piriform cortex and amygdala.

..Other strongly calbindin-immunoreactive neurons of the telencephalon were never double-labeled...

..These results suggest that the vasotocinergic system may play a role in shaping dominant-subordinate relationships and agonistic behavior in this model organism...

..evidence that the Notch-Delta pathway plays an important role in this selection in the developing mouse telencephalon. We found that the expression patterns of the Notch ligand delta-like 1 (Dll1) and of the active form of ..

..The topography and connections of Dl are remarkably similar to those of the hippocampus of tetrapods, whereas the topography and connections of Dm are similar to those of the amygdala...

Development of the telencephalon involves the coordinated growth of diversely patterned brain structures...

We are interested in the early mechanisms that initiate regional patterning in the dorsal telencephalon, which gives rise to cerebral cortex...

..and morphology of immature neurons in the proliferative ventricular and subventricular zones of the developing telencephalon. Mouse brains from embryonic day 12 (E12) to postnatal day 5 (P5) were fixed either with a non-cross-linking ..

..Our findings demonstrate that thalamocortical axons are directed by sequential, positional cues within the cortex and implicate FGF8 as an indirect regulator of thalamocortical innervation...

..activity in a vocal fish, the plainfin midshipman (Porichthys notatus), and found highest levels in the telencephalon and lower levels in the sonic hindbrain, which was dimorphic between and within (males) sexes...

..We isolated neural progenitors from the dorsal telencephalon of D6-GFP mice and cultured them in vitro...

..The expression of these molecules is also affected in the entorhinal, the visual and the somatosensory cortices...

..Here, we discuss recent data that are beginning to illuminate the origins and specification of distinct subgroups of cortical interneurons...

..Our findings strongly suggest that the developing Xenopus telencephalon shares many similarities with amniotes in terms of neuronal specification and migrations...

..The Hdh (-/-) cells were, however, 5-10 times more common in hypothalamus, midbrain, and hindbrain than in telencephalon and thalamus...

..The olfactory bulbs maintain reciprocal connections with several regions of the telencephalon [ventral nucleus of V (Vv), supracommissural nucleus (Vs), posterior zone of D (Dp), preoptic nucleus], and ..

..Further, early Pax6 protein distribution in the zebrafish telencephalon corresponds to the migrating stream noted at the pallial-subpallial boundary in amniotes, but a ventricular, ..

The connections of the dorsal telencephalon (pallium) of the Senegal bichir (Polypterus senegalus) were investigated in order to test the hypothesis that the simple everted pallium of polypterid fishes is directly comparable to the ..

..proportion of early thalamocortical projections were misrouted at the border between the diencephalon and telencephalon. This abnormality was associated with displaced connectivity of the internal capsule cells at the diencephalic-..

..responsive to F-prostaglandins in the ventromedial brain tissue strip connecting the olfactory bulb to the telencephalon. Of the 64 neurons examined in this area, 33% showed excitatory and 11% inhibitory responses to F-..

Some mammals and birds independently evolved an enlarged telencephalon. They appear to have done so, at least in part, by developing a thick telencephalic subventricular zone (SVZ)...

..that primarily sing long songs over those that primarily sing short songs, and sensitivity of the auditory telencephalon to song length depends on the prevalence of long songs in the environment...

..Several transcription factors that are expressed mainly in precursors of the ventral telencephalon have been shown to control neuronal specification, but it has been unclear whether subtype identity is also ..

..Cells in neither dorsal nor ventral telencephalon-derived neurospheres showed altered proliferation following exposure to either class of ionotropic glutamate ..

..investigated the distribution, morphology and phenotype of microglia specifically within the wall of the human telencephalon from 12 to 24 gestational weeks (gw), a period that corresponds to the development of thalamocortical fibres ..

The effects of lesions in the dorsal area of the caudal telencephalon (Carassius auratus) on the retention of spatial learning in goldfish were examined...

CB(1) cannabinoid receptors are distinctly expressed at high density within several regions of zebra finch telencephalon, including those known to be involved in song learning (lMAN and Area X) and production (HVC and RA) because (1) ..

..regulator linked to synaptic plasticity, is rapidly and transiently induced in several discrete areas of the telencephalon. This phenomenon is most marked in the caudomedial neostriatum (NCM), a major auditory processing area...

..5 mouse increases the length of the G(2)/M phase of the radial glial cell cycle in the dorsal telencephalon, as well as slows interkinetic nuclear migration of radial glial nuclei from the basal ventricular zone to the ..

..larger brains than other birds, relative to their body size, and they possess a proportionately larger telencephalon. For example, the telencephalon occupies approximately 68% of the brain in parakeets but only 52% in bobwhite ..

The telencephalon of 12 and 18 week-old human foetuses was examined for evidence of astroglia-microvessel relationship...

Cortical interneurons arise from the proliferative zone of the ventral telencephalon, the ganglionic eminence, and migrate into the developing neocortex...

..is modulated through an AhR-dependent interaction with key regulatory neuronal differentiation pathways during telencephalon development...

..Thus, CK2beta appears to play an essential and uncompensated role in central nervous system development...

..Further, it is proposed that the lateral olfactory tract in teleosts, which supplies most of the olfactory fibers to Dp, is not homologous to the same-named tract in the inverted forebrains of most other vertebrates...

..These results characterize fundamental aspects of adult progenitor cells and neurogenesis, and open the way to using virus-based technologies for stable genetic manipulations and clonal analyses in the zebrafish adult brain...

..of three cadherins (cadherin-6B, cadherin-7, and R-cadherin) was studied by immunohistochemistry in the telencephalon of chicken embryos at intermediate stages of development (11 and 15 days of incubation)...

..These hypotheses are evaluated and some persisting problems are enumerated...

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..e. altricial) state, enlarged their telencephalon by delaying telencephalic neurogenesis. To determine whether species that hatch in a relatively mature (i.e...

..mice that were deficient in Bmpr1b constitutively, and deficient in Bmpr1a conditionally in the dorsal telencephalon. In double mutant male and female mice, the dentate gyrus (DG) was dramatically smaller than in control mice, ..

..Strikingly, cortical gene expression was much more rapidly induced by Ngn2 in the dorsal telencephalon (within 12 to 24 h)...

Mature neocortical layers all derive from the cortical plate (CP), a transient zone in the dorsal telencephalon into which young neurons are continuously delivered...

..Collectively, these studies demonstrate that Psen1 expression in neural progenitor cells is crucial for cortical development and reveal a novel role for neuroectodermal expression of Psen1 in development of the brain vasculature...

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..The present results demonstrate that cells of expanded glial cultures from both the LGE and MGE can give rise to significant and, to a certain extent, region-specific neuronal and glial cell types under differentiating conditions...

..These data demonstrate that in early postnatal and, to a minor extent in adult mice, SVZ-derived cells contribute new neurons to the subcortical forebrain...

..we examined by immunohistochemistry the expression pattern of various members of this family during postnatal telencephalon development and during adulthood, and we used neuronal and glial markers to identify the cells types where ..

..To identify candidate signaling centers in the telencephalon, we isolated Wnt gene fragments from cDNA derived from embryonic mouse telencephalon...

..to integrate into foreign brain regions, here we examined the fate of precursor cells isolated from the dorsal telencephalon of E12 ss-actin-EGFP transgenic mouse embryos after heterotopic/heterochronic transplantation to the E16 rat ..

..murine forebrain neurogenesis, we performed microarray analysis with tissue from the dorsal Pax6-dependent telencephalon and the ventral Pax6-negative telencephalon at the onset of neurogenesis (E12) and at mid-neurogenesis (E15) ..

..Here we show that Mash1, an important proneural gene in the embryonic telencephalon, is broadly expressed in the postnatal SVZ, in progenitors for both neuronal and oligodendrocyte lineages...

..role of the cell cycle regulator, retinoblastoma (Rb) protein, in forebrain development, we studied mice with telencephalon-specific Rb deletions...

..Further characterization of these components could provide greater insight into the mechanisms involved in the regulation of neurogenesis in the adult brain...

..Therefore, in a previous study we initiated a screen for differential gene expression in the telencephalon of developing male and female zebra finches...

..We conclude that p190 RhoGAPs control pivotal aspects of neural development, including neuronal differentiation and process outgrowth, and that these effects are mediated by signaling systems that include, but are not limited to, RhoA...

..From their site of origin in the medial wall of the telencephalon, they spread in a caudorostral direction, following an oblique migratory path toward the lateral part of the ..

..Furthermore, cells from the lateral telencephalon can specifically sort out from medial cells...

..We analyzed the distribution of Reelin and p73 immunoreactive (ir) neurons in the telencephalon of Lacerta galloti from early embryonic stages to hatching...

..Cells with this specific phenotype may contribute to tissue repair in brain regions remote from neurogenic zones...

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..Thus, in-vitro expanded adult NSCs have the competence to become directed towards distinct functional neurotransmitter phenotypes when the appropriate transcriptional cues are provided...

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..Cell-cell contacts and microenvironmental changes influence NPC behavior in the RMS. This study may provide insights to help in understanding NPC biology...

Progenitors within the ventral telencephalon can generate GABAergic neurons and oligodendrocytes, but regulation of the neuron-glial switch is poorly understood...

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..Previous work in the mouse telencephalon has shown that activated Notch1 promotes radial glial and astrocytic character in vivo, and fibroblast growth ..

..In summary, this study demonstrates that Neogenin expression is a hallmark of many neural precursor populations (neurogenic and gliogenic) in both the embryonic and adult mammalian central nervous system...

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..Hence, the competence to generate the earliest born neurons during later cortical development is actively suppressed but not lost...

During development, the mammalian ventral telencephalon is comprised of three major proliferative zones: the medial (MGE), lateral (LGE) and caudal (CGE) ganglionic eminences...

..Here we examined the composition of radial glial cells and their proliferation in the mouse telencephalon during development. We found that almost all radial glial cells proliferate throughout neurogenesis...

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..Thus the restriction in differentiation potential of the expanded LGE cultures likely reflects deficiencies in the differentiation conditions used...

..of precursor cells in expanded neurosphere cultures derived from distinct subregions of the embryonic mouse telencephalon. These regionally derived cultures exhibited differential responses to the mitogens EGF and bFGF, suggesting ..

..Our present results suggest that neurotrophins stimulate neuronal differentiation by altering the balance of expression of various bHLH transcription factors...

..Thus, extrinsic and intrinsic forebrain patterning mechanisms cooperate to establish LGE and MGE progenitor identity, and presumably their capacities to generate distinct classes of neuronal progeny...

..to cocaine during the major periods of cortical (pallium) and limbic system (dorsomedial and dorsolateral telencephalon) development, synchronized with either the nighttime or daytime circadian phase...

..The embryonic basal telencephalon generates subcortical nuclei and cortical interneurons that are required for the function of these circuits...

..for migration of neurons and oligodendrocyte progenitor cells in cerebellum, optic nerve and embryonic telencephalon, using real time imaging...

..These GnRH neurons originate outside the CNS and migrate into the ventral telencephalon and hypothalamus during embryogenesis...

..this project is to better understand the network that governs development of the dorsal midline region in the telencephalon. The proposal is based on a signaling network model we developed that can explain holoprosencephaly, the most ..

..Results suggested that BF-1 was essential for growth of the telencephalon because at early stages, no significant differences in size of the telencephalic vesicles were apparent...

..PUBLIC HEALTH RELEVANCE: The telencephalon represents the region of the brain most concerned with cognition and voluntary movement...

The mammalian telencephalon represents the region of the brain that displays the most cellular diversity, particularly with respect to neuronal subtypes...

The telencephalon represents the region of the brain most concerned with cognition and voluntary movement...

..to cocaine during the major periods of cortical (pallium) and limbic system (dorsomedial and dorsolateral telencephalon) development, synchronized with either the nighttime or daytime circadian phase...

..In particular, studies will focus on interactions between the telencephalon, and the hypothalamus and hindbrain, since the telencephalon likely plays a critical role in clinically-..

..In particular, studies will focus on interactions between the telencephalon, and the hypothalamus and hindbrain, since the telencephalon likely plays a critical role in clinically-..

..The factors being tested are expressed in the developing mesencephalon, diencephalon and telencephalon and are involved in GABAergic development...

..and FGF2 transgenic mice with regard to volume, cell number and apoptosis within histogenic domains of the telencephalon containing neuronal and glial progenitor cells...

..each of these broadly defined functions, and has shown that they-along with closely associated limbic telencephalon regions-project topographically to the lateral hypothalamic area (LHA)...

..for migration of neurons and oligodendrocyte progenitor cells in cerebellum, optic nerve and embryonic telencephalon, using real time imaging...

..suggest that the tectopulvinar system is one of the most ancient components of the ascending pathways to the telencephalon and is vital to the process of motion detection...

..that the signaling molecule FGF8 specifies positional identity in the neocortex from a source in the anterior telencephalon. Modifying the endogenous anterior FGF8 signal shifts areas along the anterior/posterior (A/P) axis of the ..

..In adult warm-blooded vertebrates, the most widespread production of neurons occurs in the avian telencephalon. In songbirds, many new neurons are inserted into the High Vocal Center (HVC), a region necessary for the ..

..be assessed by their interaction with lower motoneurons in culture and following transplantation to dorsal telencephalon of a chick embryo...

..test these hypotheses, we will use mice lacking the Fgfr-1 gene product in neuroepithelial cells of the dorsal telencephalon by site-specific recombination (conditional knockout) beginning at either E9.5 or E13.5 stages of development...

This project addresses fundamental neuroantomical issues about parts of the telencephalon, diencephalon and brainstem that are strongly influenced by mesotelencephalic dopamine and subserve spontaneous, purposeful behaviors...

..The embryonic basal telencephalon generates subcortical nuclei and cortical interneurons that are required for the function of these circuits...

..Axons penetrate the telencephalon, forming a presumptive olfactory nerve layer (pONL)...

..Axons penetrate the telencephalon, forming a presumptive olfactory nerve layer (pONL)...