abstract：:Regulation of synaptic strength is essential for neuronal information processing, but the molecular mechanisms that control changes in neuroexocytosis are only partially known. Here we show that the putative G protein-coupled receptor Methuselah (Mth) is required in the presynaptic motor neuron to acutely upregulate n...

journal_title：Neuron

authors： Song W,Ranjan R,Dawson-Scully K,Bronk P,Marin L,Seroude L,Lin YJ,Nie Z,Atwood HL,Benzer S,Zinsmaier KE

更新日期：2002-09-26 00:00:00

abstract：:The molecular basis of the selective death of motor neurons in amyotrophic lateral sclerosis (ALS) has been an enigma since its description by Charcot in 1869. In this issue of Neuron, demonstrate a motor neuron-specific death pathway which involves Fas and NO. Remarkably, motor neurons from mice carrying ALS-linked m...

journal_title：Neuron

authors： Xiong ZQ,McNamara JO

更新日期：2002-09-12 00:00:00

abstract：:Receptor tyrosine kinases (RTKs) are membrane spanning proteins with intrinsic kinase activity. Although these receptors are known to be involved in proliferation and differentiation of cells, their roles in regulating central synaptic transmission are largely unknown. In CA1 pyramidal neurons, activation of D2 class ...

journal_title：Neuron

authors： Kotecha SA,Oak JN,Jackson MF,Perez Y,Orser BA,Van Tol HH,MacDonald JF

更新日期：2002-09-12 00:00:00

abstract：:Spinal and bulbar muscular atrophy (SBMA) is a polyglutamine disease caused by the expansion of a CAG repeat in the androgen receptor (AR) gene. We generated a transgenic mouse model carrying a full-length AR containing 97 CAGs. Three of the five lines showed progressive muscular atrophy and weakness as well as diffus...

journal_title：Neuron

authors： Katsuno M,Adachi H,Kume A,Li M,Nakagomi Y,Niwa H,Sang C,Kobayashi Y,Doyu M,Sobue G

更新日期：2002-08-29 00:00:00

abstract：:We used fMRI to investigate how moment-to-moment neural activity contributes to success or failure on individual trials of a visual working memory (WM) task. We found that different nodes of a distributed cortical network were activated to a greater extent for correct compared to incorrect trials during stimulus encod...

journal_title：Neuron

authors： Pessoa L,Gutierrez E,Bandettini P,Ungerleider L

更新日期：2002-08-29 00:00:00

abstract：:Mammalian olfactory sensory neurons that express a particular odorant receptor (OR) project axons to the same few glomeruli in the olfactory bulb. In this issue of Neuron, Vassalli et al. use OR minigenes that coexpress histochemical markers and show that the determinants in the sensory neurons required to generate th...

journal_title：Neuron

authors： Ranganathan R,Buck LB

更新日期：2002-08-15 00:00:00

abstract：:Elevation of cAMP can overcome myelin inhibitors to encourage regeneration of the CNS. We show that a consequence of elevated cAMP is the synthesis of polyamines, resulting from an up-regulation of Arginase I, a key enzyme in their synthesis. Inhibiting polyamine synthesis blocks the cAMP effect on regeneration. Eithe...

journal_title：Neuron

authors： Cai D,Deng K,Mellado W,Lee J,Ratan RR,Filbin MT

更新日期：2002-08-15 00:00:00

abstract：:We report that EphB receptors direct unique axonal behaviors required for mapping the dorsal-ventral (D-V) retinal axis along the lateral-medial (L-M) axis of the superior colliculus (SC). EphBs are expressed in a D-V gradient, ephrin-B1 in a L-M gradient in SC, and ephrin-B3 at its midline. EphBs and ephrin-Bs are ex...

journal_title：Neuron

authors： Hindges R,McLaughlin T,Genoud N,Henkemeyer M,O'Leary D

更新日期：2002-08-01 00:00:00

abstract：:Parkinson's disease (PD) is a common neurodegenerative disorder with no known cure. The etiology of PD is likely due, in part, to combinations of genetic susceptibilities and environmental factors. In rare familial cases, PD is due to genetic mutations. A number of new genetic and toxin models of PD and advances in ol...

journal_title：Neuron

authors： Dawson T,Mandir A,Lee M

更新日期：2002-07-18 00:00:00

abstract：:After synaptic vesicles (SVs) undergo exocytosis, SV pools are replenished by recycling SVs at nerve terminals. At Drosophila neuromuscular synapses, there are two distinct SV pools (i.e., the exo/endo cycling pool (ECP), which primarily maintains synaptic transmission, and the reserve pool (RP), which participates in...

journal_title：Neuron

authors： Kuromi H,Kidokoro Y

更新日期：2002-07-18 00:00:00

abstract：:LIM kinase 1 regulates actin filament dynamics through inhibition of ADF/cofilins. Surprisingly, nervous system development in LIM kinase 1 knockout mice is grossly normal, but the animals have deficits in spatial learning, alterations in LTP, and abnormalities in hippocampal dendritic spine structure. The findings ar...

journal_title：Neuron

authors： Sarmiere PD,Bamburg JR

更新日期：2002-07-03 00:00:00

abstract：:Synaptic remodeling has been postulated as a mechanism underlying synaptic plasticity, and cadherin adhesion molecules are thought to be a regulator of such a process. We examined the effects of cadherin blockage on synaptogenesis in cultured hippocampal neurons. This blockade resulted in alterations of dendritic spin...

journal_title：Neuron

authors： Togashi H,Abe K,Mizoguchi A,Takaoka K,Chisaka O,Takeichi M

更新日期：2002-07-03 00:00:00

abstract：:Improvement in motor skill performance is known to continue for at least 24 hr following training, yet the relative contributions of time spent awake and asleep are unknown. Here we provide evidence that a night of sleep results in a 20% increase in motor speed without loss of accuracy, while an equivalent period of t...

journal_title：Neuron

authors： Walker MP,Brakefield T,Morgan A,Hobson JA,Stickgold R

更新日期：2002-07-03 00:00:00

abstract：:Voltage-gated Na(+) channels are the workhorses of spike generation and propagation in excitable cells. Mutations in Na(+) channel genes have been identified in disorders causing episodic dysfunction of heart, skeletal muscle, and brain. Lossin and colleagues from Al George's lab report in this issue of Neuron that th...

journal_title：Neuron

authors： Cannon SC

更新日期：2002-06-13 00:00:00

abstract：:To investigate the role of the pathogenic prion protein (PrP(Sc)) in controlling susceptibility to foreign prions, two Syrian hamster (SHa) prion strains, Sc237 and DY, were transmitted to transgenic mice expressing chimeric SHa/mouse PrP genes, Tg(MH2M). First passage of SHa(Sc237) prions exhibited prolonged incubati...

journal_title：Neuron

authors： Peretz D,Williamson RA,Legname G,Matsunaga Y,Vergara J,Burton DR,DeArmond SJ,Prusiner SB,Scott MR

更新日期：2002-06-13 00:00:00

abstract：:We present evidence that synapse retraction occurs during normal synaptic growth at the Drosophila neuromuscular junction (NMJ). An RNAi-based screen to identify the molecular mechanisms that regulate synapse retraction identified Arp-1/centractin, a subunit of the dynactin complex. Arp-1 dsRNA enhances synapse retrac...

journal_title：Neuron

authors： Eaton BA,Fetter RD,Davis GW

更新日期：2002-05-30 00:00:00

abstract：:Functionally distinct types of neurons develop in stereotypical positions in the vertebrate spinal cord. The mechanisms that generate this diversity have been well studied in the ventral and intermediate regions of the spinal cord, while dorsal cells have received less attention. In this issue of Neuron, two papers fo...

journal_title：Neuron

authors： Matise M

更新日期：2002-05-16 00:00:00

abstract：:The netrin UNC-6 repels motor axons by activating the UNC-5 receptor alone or in combination with the UNC-40/DCC receptor. In a genetic screen for C. elegans mutants exhibiting partial defects in motor axon projections, we isolated the max-1 gene (required for motor neuron axon guidance). max-1 loss-of-function mutati...

journal_title：Neuron

authors： Huang X,Cheng HJ,Tessier-Lavigne M,Jin Y

更新日期：2002-05-16 00:00:00

abstract：:Homomeric assembly of Kir5.1, an inward-rectifying K+ channel subunit, is believed to be nonfunctional, although the subunit exists abundantly in the brain. We show that HEK293T cells cotransfected with Kir5.1 and PSD-95 exhibit a Ba(2+)-sensitive inward-rectifying K+ current. Kir5.1 coexpressed with PSD-95 located on...

journal_title：Neuron

authors： Tanemoto M,Fujita A,Higashi K,Kurachi Y

更新日期：2002-04-25 00:00:00

abstract：:Synapse-to-nucleus signaling leading to CREB-mediated transcription is important for neuronal plasticity. Nuclear CREB phosphorylation at Ser133 allows convergence of multiple kinase pathways driven by neuronal activity and links them to transcriptional activation. But, can various pathways share a common effector mec...

journal_title：Neuron

authors： Deisseroth K,Tsien RW

更新日期：2002-04-11 00:00:00

abstract：:Auditory information critical for fear conditioning, a model of emotional learning, is conveyed to the lateral nucleus of the amygdala via two routes: directly from the medial geniculate nucleus and indirectly from the auditory cortex. Here we show in the cortico-amygdala pathway that learned fear occludes electricall...

journal_title：Neuron

authors： Tsvetkov E,Carlezon WA,Benes FM,Kandel ER,Bolshakov VY

更新日期：2002-04-11 00:00:00

abstract：:Interaction with the multi-PDZ protein GRIP is required for the synaptic targeting of AMPA receptors, but the underlying mechanism is unknown. We show that GRIP binds to the liprin-alpha/SYD2 family of proteins that interact with LAR receptor protein tyrosine phosphatases (LAR-RPTPs) and that are implicated in presyna...

journal_title：Neuron

authors： Wyszynski M,Kim E,Dunah AW,Passafaro M,Valtschanoff JG,Serra-Pagès C,Streuli M,Weinberg RJ,Sheng M

更新日期：2002-03-28 00:00:00

abstract：:We measured brain activity during mental rotation and object recognition with objects rotated around three different axes. Activity in the superior parietal lobe (SPL) increased proportionally to viewpoint disparity during mental rotation, but not during object recognition. In contrast, the fusiform gyrus was preferen...

journal_title：Neuron

authors： Gauthier I,Hayward WG,Tarr MJ,Anderson AW,Skudlarski P,Gore JC

更新日期：2002-03-28 00:00:00

abstract：:Excitotoxic cell death stimulated by quinolinic acid injection into the striatum has a long history of "mimicking" many aspects of motor, behavioral, and neurochemical changes observed in Huntington's disease patients. In this issue of Neuron, provide insight into the role of NMDA receptors in the cell-specific excito...

journal_title：Neuron

authors： Ellerby LM

更新日期：2002-03-14 00:00:00

abstract：:The slow (<1 Hz) rhythm is a defining feature of the electroencephalogram during sleep. Since cortical circuits can generate this rhythm in isolation, it is assumed that the accompanying slow oscillation in thalamocortical (TC) neurons is largely a passive reflection of neocortical activity. Here we show, however, tha...

journal_title：Neuron

authors： Hughes SW,Cope DW,Blethyn KL,Crunelli V

更新日期：2002-03-14 00:00:00

abstract：:Phosphatidylinositol 3-kinase (PI3K)-dependent phosphoinositide signaling has been implicated in diverse cellular systems coupled to receptors for many different ligands, but the extent to which it functions in sensory transduction is yet to be determined. We now report that blocking PI3K activity increases odorant-ev...

journal_title：Neuron

authors： Spehr M,Wetzel CH,Hatt H,Ache BW

更新日期：2002-02-28 00:00:00

abstract：:Axon bifurcation results in the formation of sister branches, and divergent segregation of the sister branches is essential for efficient innervation of multiple targets. From a genetic mosaic screen, we find that a lethal mutation in the Drosophila Down syndrome cell adhesion molecule (Dscam) specifically perturbs se...

journal_title：Neuron

authors： Wang J,Zugates CT,Liang IH,Lee CH,Lee T

更新日期：2002-02-14 00:00:00

abstract：:The parietal lobes of nonhuman primates have been well characterized by single neuron recordings, yet clear partitioning of the human parietal lobes has not been clearly demonstrated. An elegant new fMRI study by Simon and colleagues (this issue of Neuron) suggests that parietal cortex does indeed contain dissociable ...

journal_title：Neuron

authors： Culham J

更新日期：2002-01-31 00:00:00

abstract：:Spine Ca(2+) is critical for the induction of synaptic plasticity, but the factors that control Ca(2+) handling in dendritic spines under physiological conditions are largely unknown. We studied [Ca(2+)] signaling in dendritic spines of CA1 pyramidal neurons and find that spines are specialized structures with low end...

journal_title：Neuron

authors： Sabatini BL,Oertner TG,Svoboda K

更新日期：2002-01-31 00:00:00

abstract：:During development, retinal ganglion cell (RGC) axons either cross or avoid the midline at the optic chiasm. In Drosophila, the Slit protein regulates midline axon crossing through repulsion. To determine the role of Slit proteins in RGC axon guidance, we disrupted Slit1 and Slit2, two of three known mouse Slit genes....

journal_title：Neuron

authors： Plump AS,Erskine L,Sabatier C,Brose K,Epstein CJ,Goodman CS,Mason CA,Tessier-Lavigne M

更新日期：2002-01-17 00:00:00

abstract：:Excessive grooming behaviors, cleansing rituals, and self-mutilation are important features of a range of neuropsychiatric diseases including obsessive compulsive (OC)-spectrum disorders. In this issue of Neuron, Greer and Capecchi (2002) report that Hoxb8 mutant mice exhibit this behavioral phenotype. These Hoxb8 mut...

journal_title：Neuron

authors： Graybiel AM,Saka E

更新日期：2002-01-03 00:00:00

abstract：:GABARAP recognizes and binds the gamma2 subunit of the GABA(A) receptor, interacts with microtubules and the N-ethyl maleimide sensitive factor, and is proposed to function in GABA(A) receptor trafficking and postsynaptic localization. We have determined the crystal structure of human GABARAP at 1.6 A resolution. The ...

journal_title：Neuron

authors： Coyle JE,Qamar S,Rajashankar KR,Nikolov DB

更新日期：2002-01-03 00:00:00

abstract：:Experimental evidence shows that the inability to attribute mental states, such as desires and beliefs, to self and others (mentalizing) explains the social and communication impairments of individuals with autism. Brain imaging studies in normal volunteers highlight a circumscribed network that is active during menta...

journal_title：Neuron

authors： Frith U

更新日期：2001-12-20 00:00:00

abstract：:Hundreds of G protein-coupled receptors (GPCRs) and at least six GPCR kinases have been identified, but the only GPCR phosphatase that has been definitively demonstrated is the rhodopsin phosphatase encoded by the rdgC locus of Drosophila. Mutations in rdgC result in defects in termination of the light response and ca...

journal_title：Neuron

authors： Lee SJ,Montell C

更新日期：2001-12-20 00:00:00

abstract：:Careful functional dissection of mouse neuromuscular junctions (NMJs) formed in the absence of NCAM reveal that in spite of relatively normal morphology and ultrastructure, the presynaptic terminals have profound alterations in the mechanisms of recycling of synaptic vesicles. These alterations, including the appearan...

journal_title：Neuron

authors： Ryan TA

更新日期：2001-12-06 00:00:00

abstract：:AMPA receptors are thought to be a tetrameric assembly of the subunits GluR1-4. We have examined whether two coexpressed subunits (GluR1/2) combine at random to form channels, or preferentially assemble with a specific stoichiometry and spatial configuration. The subunits carried markers controlling ion permeation and...

journal_title：Neuron

authors： Mansour M,Nagarajan N,Nehring RB,Clements JD,Rosenmund C

更新日期：2001-12-06 00:00:00

abstract：:The carboxyl terminus of presenilin 1 and 2 (PS1 and PS2) binds to the neuron-specific cell adhesion molecule telencephalin (TLN) in the brain. PS1 deficiency results in the abnormal accumulation of TLN in a yet unidentified intracellular compartment. The first transmembrane domain and carboxyl terminus of PS1 form a ...

journal_title：Neuron

authors： Annaert WG,Esselens C,Baert V,Boeve C,Snellings G,Cupers P,Craessaerts K,De Strooper B

更新日期：2001-11-20 00:00:00

abstract：:We perceive motion when presented with spatiotemporal changes in contrast (second-order cue). This requires linear signals to be rectified and then summed in temporal order to compute direction. Although both operations have been attributed to cortex, rectification might occur in retina, prior to the ganglion cell. He...

journal_title：Neuron

authors： Demb JB,Zaghloul K,Sterling P

更新日期：2001-11-20 00:00:00

abstract：:Flies exhibit a repertoire of aerial acrobatics unmatched in robustness and aerodynamic sophistication. The exquisite control of this complex behavior emerges from encoding intricate patterns of optic flow, and the translation of these visual signals into the mechanical language of the motor system. Recent advances in...

journal_title：Neuron

authors： Frye MA,Dickinson MH

更新日期：2001-11-08 00:00:00

abstract：:This study explores the nature of population coding in sensory cortex by applying information theoretic analyses to neuron pairs recorded simultaneously from rat barrel cortex. We quantified the roles of individual spikes and spike patterns in encoding whisker stimulus location. 82%-85% of the total information was co...

journal_title：Neuron

authors： Petersen RS,Panzeri S,Diamond ME

更新日期：2001-11-08 00:00:00