Abstract：
:How does an extracellular guidance molecule direct multiple growth cones to different positions? The answer is important for understanding the development of complex neural connections. UNC-6 is a member of the netrin family of guidance proteins. It has phylogenetically conserved domains that mediate its different guidance and branching activities. In the Caenorhabditis elegans embryo, UNC-6 is secreted ventrally and a pattern of circumferential axon tracts develops as pioneer growth cones bearing UNC-5 and UNC-40 receptors are directed towards, or away from, the ventral sources. Following the first migrations, UNC-6 from additional sources allows more complex migration patterns to emerge. In addition, at specific dorsoventral positions, locally restricted extracellular molecules alter growth cone responses to UNC-6, causing circumferentially migrating growth cones to turn and longitudinal nerves to develop. These observations show that extracellular guidance molecules can direct complex arrangements of migrating growth cones in vivo by eliciting different types of responses, by spatially and temporally regulating their expression and by working in concert with other extracellular molecules.
journal_name
Trends Neuroscijournal_title
Trends in neurosciencesauthors
Wadsworth WGdoi
10.1016/s0166-2236(02)02206-3subject
Has Abstractpub_date
2002-08-01 00:00:00pages
423-9issue
8eissn
0166-2236issn
1878-108Xpii
S0166-2236(02)02206-3journal_volume
25pub_type
杂志文章,评审abstract：:The nigrostriatal dopamine (DA) system has an essential role in the selection and control of movement sequences, and its degeneration causes the characteristic motor symptoms of Parkinson's disease. Parkinsonian motor symptoms are alleviated by L-DOPA, but this treatment induces motor fluctuations and dyskinesias (abn...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2007.03.005
更新日期：2007-05-01 00:00:00
abstract：:Rett syndrome is a neurodevelopmental disorder that primarily affects females and is caused by mutations in the methyl-CpG-binding-protein 2 (MECP2) gene. Initially, MeCP2 had been shown to be a repressor of gene transcription. In their 2008 paper, Chahrour and colleagues (DOI: 10.1126/science.1153252) reported that M...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2017.11.005
更新日期：2018-02-01 00:00:00
abstract：:A variety of fatty acids regulate the activity of specific ion channels by mechanisms not involving the enzymatic pathways that convert arachidonic acid to oxygenated metabolites. Furthermore, these actions of fatty acids occur in patches of membrane excised from the cell and are not mediated by cellular signal transd...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(91)90069-7
更新日期：1991-03-01 00:00:00
abstract：:High levels of expression of Ca2+/phospholipid-dependent protein kinase C (PKC) occur in neuronal tissues and play a strategic role in the modulation of short- and long-term functions (ion channels, receptor desensitization, neurotransmitter release and synaptic efficiency) that become modified during the brain ageing...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/s0166-2236(97)01084-9
更新日期：1997-09-01 00:00:00
abstract：:Fear is an adaptive response to recognition of a potentially dangerous event. Glucocorticoids are essential for maintaining a wide variety of behavioral events by their regulation of numerous genes; one such gene encodes corticotrophin-releasing hormone (CRH). CRH is involved in diverse behavioral responses to changin...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2005.09.009
更新日期：2005-12-01 00:00:00
abstract：:In the central nervous system (CNS) the function of retinoic acid, the active metabolite of vitamin A, is best understood from its action in guiding embryonic development; as development comes to completion, retinoic acid signaling declines. However, it is increasingly recognized that this signaling mechanism does not...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2012.08.005
更新日期：2012-12-01 00:00:00
abstract：:This review focuses on the epileptic human temporal lobe, primarily on recent findings related to changes in hippocampal GABAergic interneuron circuits that have a central role in epileptogenesis. Relying on correlations to animal studies, we provide a functional interpretation of the different changes in perisomatic ...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2005.04.002
更新日期：2005-06-01 00:00:00
abstract：:Sensory dendrites fall into many different morphological and functional classes. Polymodal nociceptors are one subclass of sensory neurons, which are of particular note owing to their elaborate dendritic arbors. Complex developmental programs are required to form these arbors and there is striking conservation of morp...
journal_title：Trends in neurosciences
pub_type： 杂志文章
doi：10.1016/j.tins.2011.07.004
更新日期：2011-09-01 00:00:00
abstract：:Synaptic transmission and plasticity are shaped by the dynamic reorganization of signaling molecules within pre- and postsynaptic compartments. The nanoscale organization of key effector molecules has been revealed by single-particle trajectory (SPT) methods. Interestingly, this nanoscale organization is highly hetero...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2020.01.005
更新日期：2020-03-01 00:00:00
abstract：:Neuro-immune interactions are not only vital for the control of neurotropic pathogens, but also appear to influence brain development and homeostasis. During immune surveillance, T cells can patrol the CNS-associated border regions to sense pathogenic alterations. While access to the CNS parenchyma is restricted in th...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2019.07.008
更新日期：2019-10-01 00:00:00
abstract：:Communication is a central theme in biology. Consequently, specialized structures have evolved to permit rapid communication among cells, tissues, organs, and physiological systems, thus enhancing the overall function and adaptation of the organism. A prime example is the neuronal synapse. In the brain, synaptic commu...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2015.06.001
更新日期：2015-08-01 00:00:00
abstract：:No therapy exists to slow down or prevent Parkinson's disease (PD), a debilitating neurodegenerative disorder. Neurotrophic factors (NTFs) emerged as promising disease-modifying agents in PD and are currently under clinical development. We argue that efforts in three research areas must converge to harness the full th...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2010.11.001
更新日期：2011-02-01 00:00:00
abstract：:For organs innervated by the autonomic nervous system, it is generally held that neuroeffector transmission is achieved by varicosities releasing transmitters some distance from the membranes of target cells. Transmitters are thought to diffuse through the extracellular space and interact with post-junctional receptor...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(92)90024-3
更新日期：1992-02-01 00:00:00
abstract：:Genetic studies have identified several of the genes associated with malformations of cortical development which might disrupt each of the main stages of cell proliferation and specification, neuronal migration and late cortical organization. The largest malformation groups, focal cortical dysplasia, heterotopia and p...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2007.12.004
更新日期：2008-03-01 00:00:00
abstract：:Mitochondrial dysfunction has been implicated in the pathogenesis of almost all neurological diseases, including Alzheimer's disease (AD). Historically, a primary focus in this context has been the link between mitochondrial dynamics and amyloid β toxicity. Recent evidence suggests that dysregulation of mitochondrial ...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2020.10.004
更新日期：2021-02-01 00:00:00
abstract：:Brain dynamic changes associated with schizophrenia are largely equivocal, with interpretation complicated by many factors, such as the presence of therapeutic agents and the complex nature of the syndrome itself. Evidence for a brain-wide change in individual network oscillations, shared by all patients, is largely e...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2017.04.003
更新日期：2017-06-01 00:00:00
abstract：:Neuroethics, a recently modernized field at the intersection of bioethics and neuroscience, is founded on centuries of discussion of the ethical issues associated with mind and behavior. Broadly defined, neuroethics is concerned with ethical, legal and social policy implications of neuroscience, and with aspects of ne...
journal_title：Trends in neurosciences
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.tins.2006.07.002
更新日期：2006-09-01 00:00:00
abstract：:To localize a sound source in space, the auditory system detects minute differences in the arrival time of a sound between the two ears. It has long been assumed that delay lines and coincidence detectors turn these time differences into a labelled line code for source position, but recent studies challenge this view....
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/s0166-2236(00)01953-6
更新日期：2001-12-01 00:00:00
abstract：:Most neurons are generated during development and are not replaced during adulthood, even if they are lost to injury or disease. However, it is firmly established that new neurons are generated in the dentate gyrus of the hippocampus of almost all adult mammals, including humans. Nevertheless, many questions remain re...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2015.07.005
更新日期：2015-09-01 00:00:00
abstract：:Korsakoff's disease is an amnesic syndrome associated with midline diencephalic and brain stem pathology. A number of neurochemical systems course through or near the loci of brain lesions found postmortem in Korsakoff patients, which has stimulated studies to learn whether these systems are implicated in amnesia. Dat...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(90)90146-2
更新日期：1990-08-01 00:00:00
abstract：:P2X receptors are cation-selective ion channels that open on binding to extracellular ATP; they play a role in fast synaptic transmission between neurones, and from autonomic nerves to smooth muscles. Isolation of cDNAs that encode P2X receptors in the smooth muscle of vas deferens and in phaeochromocytoma cells indic...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(95)93907-f
更新日期：1995-05-01 00:00:00
abstract：:The construction of artificial walking machines has been a challenging task for engineers for several centuries. Advances in computer technology have stimulated this research in the past two decades, and enormous progress has been made, particularly in recent years. Nevertheless, in comparing the walk of a six-legged ...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(90)90057-h
更新日期：1990-01-01 00:00:00
abstract：:The precise modulation of regional cerebral blood flow during neural activation is important for matching local energetic demand and supply and clearing brain metabolites. Here we discuss advances facilitated by high-resolution optical in vivo imaging techniques that for the first time have provided direct visualizati...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2019.05.009
更新日期：2019-08-01 00:00:00
abstract：:Rhythmical brain activity around 5Hz can be observed in the prefrontal cortex under conditions requiring high levels of cognitive control. However, its temporal dynamics are still elusive. A recent research paper (Cooper et al. Neuroimage 2019;189:130-140) provides evidence that the temporal evolution of this frontal-...
journal_title：Trends in neurosciences
pub_type： 评论,杂志文章
doi：10.1016/j.tins.2019.02.006
更新日期：2019-05-01 00:00:00
abstract：:The orexins (or hypocretins) are neuropeptide transmitters made exclusively in hypothalamic neurons that have extensive CNS projections. Previous studies reported that this system is most strongly associated with feeding, arousal and the maintenance of waking. We review here recent studies that reveal a novel and impo...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2006.08.002
更新日期：2006-10-01 00:00:00
abstract：:The discovery of genetic forms of Parkinson's disease (PD) has highlighted the importance of the autophagy/lysosomal and mitochondrial/oxidative stress pathways in disease pathogenesis. However, recently identified PD-linked genes, including DNAJC6 (auxilin), SYNJ1 (synaptojanin 1), and the PD risk gene SH3GL2 (endoph...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/j.tins.2018.11.001
更新日期：2019-02-01 00:00:00
abstract：:Motoneurones are known to die (1) during embryonic development (naturally occurring cell death), (2) early in postnatal development after axonal injury, and (3) as a consequence of disease, such as spinal muscular atrophy or (in later life) amyotrophic lateral sclerosis. Naturally occurring motoneurone death has been ...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(92)90014-y
更新日期：1992-03-01 00:00:00
abstract：:An abundance of experimental literature has established that gonadal steroid hormones are responsible for the sexual differentiation of neural circuitry, mediating a variety of reproductive behaviors and physiological mechanisms. These same hormones regulate the expression of reproductive function in the adult and may...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(90)90186-e
更新日期：1990-03-01 00:00:00
abstract：:There is compelling evidence linking bradykinin (BK) with the pathophysiological processes that accompany tissue damage and inflammation, especially the production of pain and hyperalgesia. Several mechanisms have been proposed to account for hyperalgesia including the direct activation of nociceptors as well as sensi...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(93)90133-7
更新日期：1993-03-01 00:00:00
abstract：:Acute inflammation plays an important role in host tissue defense against injury and infection, and also subsequent tissue repair. In the central nervous system parenchyma, following many types of insults, the acute inflammatory response to rapid neuronal degeneration or challenge with inflammatory substances differs ...
journal_title：Trends in neurosciences
pub_type： 杂志文章,评审
doi：10.1016/0166-2236(93)90180-t
更新日期：1993-07-01 00:00:00
