Abstract:
:The myelinated axon provides a model in which it is possible to examine how various types of ion channels are incorporated into a membrane to form an excitable neuronal process. The available evidence now indicates that mammalian myelinated fibers contain a repertoire of physiologically active membrane molecules including at least four types of ion channels and an electrogenic Na+,K(+)-pump. Physiological properties of myelinated fibers reflect the distribution of these various types of channels and pumps, as well as interactions with myelinating Schwann cells in the PNS or oligodendrocytes in the CNS. A growing body of data also suggests a role for astrocytes and Schwann cells at nodes of Ranvier. This article reviews the current understanding of the ion channel organization of the mammalian myelinated fiber.
journal_name
Trends Neuroscijournal_title
Trends in neurosciencesauthors
Black JA,Kocsis JD,Waxman SGdoi
10.1016/0166-2236(90)90068-lsubject
Has Abstractpub_date
1990-02-01 00:00:00pages
48-54issue
2eissn
0166-2236issn
1878-108Xpii
0166-2236(90)90068-Ljournal_volume
13pub_type
杂志文章,评审abstract::The term neuropeptide was advanced by de Wied and collaborators in the early seventies. At that time, they defined neuropeptides as endogenous substances synthesized in nerve cells and involved in nervous system functions. Since then, several studies have revealed that the very same 'neuropeptides' are also expressed ...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2003.09.003
更新日期:2003-11-01 00:00:00
abstract::Compromise of the ubiquitin-proteasome system (UPS) is a potential basis for multiple physiological abnormalities and pathologies in the CNS. This could be because reduced protein turnover leads to bulk intracellular protein accumulation. However, conditions associated with compromised UPS function are also associated...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2006.11.003
更新日期:2007-01-01 00:00:00
abstract::The nervous system is made up of many specific types of neuron intricately intertwined to form complex networks. Identifying and defining the characteristic features of the many different neuronal types is essential for achieving a cellular understanding of complex activity from perception to cognition. So far, cortic...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2003.08.002
更新日期:2003-10-01 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
abstract::Recent progress in cognitive neuroscience highlights the involvement of the prefrontal cortex (PFC) in social cognition. Accumulating evidence demonstrates that representations within the lateral PFC enable people to coordinate their thoughts and actions with their intentions to support goal-directed social behavior. ...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2009.09.001
更新日期:2009-12-01 00:00:00
abstract::Central processing of olfactory information has been analyzed in the mushroom body of Drosophila by Ca(2+) imaging, extending such analysis of odor coding to the second relay of the olfactory system. Different odors, and different concentrations of a particular odor, yield distinct spatial patterns of activity. Mutati...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(00)01895-6
更新日期:2001-09-01 00:00:00
abstract::In the mammalian central nervous system (CNS), coupling of neurons by gap junctions (i.e., electrical synapses) and the expression of the neuronal gap junction protein, connexin 36 (Cx36), transiently increase during early postnatal development. The levels of both subsequently decline and remain low in the adult, conf...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2012.11.001
更新日期:2013-04-01 00:00:00
abstract::Conflicting reports about whether adult hippocampal neurogenesis occurs in humans raise questions about its significance for human health and the relevance of animal models. Drawing upon published data, I review species' neurogenesis rates across the lifespan and propose that accelerated neurodevelopmental timing is c...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2018.12.001
更新日期:2019-03-01 00:00:00
abstract::The ability of neurons to modulate the strength of their synaptic connections has been shown to depend on the relative timing of pre- and postsynaptic action potentials. This form of synaptic plasticity, called spike-timing-dependent plasticity (STDP), has become an attractive model for learning at the single-cell lev...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2007.06.010
更新日期:2007-09-01 00:00:00
abstract::In a series of seminal behavioral and electrophysiological experiments, Knudsen and Konishi studied the mechanisms of hearing. Their 1979 article showed how the barn owl utilizes unique anatomical features for creating a systematic internal representation of auditory space. This established the barn owl as a prime mod...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2018.01.004
更新日期:2018-03-01 00:00:00
abstract::Progress in migraine research has been rapid in recent years, from both the basic science and the clinical perspectives. A new internationally accepted headache classification with operational diagnostic criteria was published in 1988, eliminating much diagnostic uncertainty. More than a decade of study of regional ce...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/0166-2236(91)90171-p
更新日期:1991-01-01 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::Recently, two large multigene families of putative G-protein-linked receptors that are expressed in distinct subpopulations of neurones in the vomeronasal organ have been identified. These receptors probably mediate pheromone detection. The most surprising aspects of these findings are that there are so many receptors...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(98)01274-0
更新日期:1998-11-01 00:00:00
abstract::It has become apparent in recent years that the cytoskeleton and its associated proteins play a major role in secretion. This review summarizes recent findings on the cytoskeleton organization and the molecular topology of its regulatory proteins, as well as the dynamic changes that occur in this organelle during secr...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/0166-2236(93)90079-2
更新日期:1993-11-01 00:00:00
abstract::A key problem in developmental neurobiology is how axons home in on their correct target tissue and establish the correct synaptic contacts. Recent work shows that in the developing Drosophila visual system a population of distinct lamina glial cells ensures correct target layer selection of retinal axons. In the abse...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(00)01861-0
更新日期:2001-08-01 00:00:00
abstract::To understand the role of a gene in adult behavior, it is necessary to control its expression in four dimensions: space and time. Two recent papers describe implementation of different but related technologies that now provide this missing element in fly behavioral research. ...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2004.06.013
更新日期:2004-09-01 00:00:00
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 gui...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(02)02206-3
更新日期:2002-08-01 00:00:00
abstract::Notions of what constitutes a neurotransmitter have changed markedly with the advent in the past decade of synaptic molecules, which satisfy key neurotransmitter criteria but differ radically from classical transmitters. Thus, NO and carbon monoxide are neither stored in synaptic vesicles nor released by exocytosis. T...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(00)01716-1
更新日期:2001-02-01 00:00:00
abstract::Glia are the most abundant cell type in the mammalian nervous system and they have vital roles in neural development, function and health. However our understanding of the biology of glia is in its infancy. How do glia develop and interact with neurons? How diverse are glial populations? What are the primary functions...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2005.12.002
更新日期:2006-02-01 00:00:00
abstract::Hebbian synaptic learning requires co-activation of presynaptic and postsynaptic neurons. However, under some conditions, information regarding the postsynaptic action potential, carried by backpropagating action potentials, can be strongly degraded before it reaches the distal exhibit Hebbian long-term potentiation (...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2003.12.004
更新日期:2004-02-01 00:00:00
abstract::Conditioning and extinction of fear have traditionally been viewed as two independent learning processes for encoding representations of contexts or cues (conditioned stimuli, CS), aversive events (unconditioned stimuli, US), and their relationship. Based on the analysis of protein kinase signaling patterns in neurons...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2011.10.003
更新日期:2012-03-01 00:00:00
abstract::Astrocytes, which constitute the most abundant cell type in mammalian brain, are extensively coupled to one another through gap junctions composed mainly of connexin43. In regions exhibiting high levels of connexin43 expression, tens of astrocytes are labeled following single-cell intracellular injection. Importantly,...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/0166-2236(96)10046-1
更新日期:1996-08-01 00:00:00
abstract::It is well established that some excitatory nerve terminals have high concentrations of Zn(2+) in their synaptic vesicles. For some time, it has been believed that synaptic Zn(2+) is released during neurotransmission and acts as a neuromodulator. Fluorescent Zn(2+) indicators that do not penetrate membranes offer the ...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2006.02.004
更新日期:2006-04-01 00:00:00
abstract::Local signaling events at synapses or axon terminals must be communicated to the nucleus to elicit transcriptional responses. The lengths of neuronal processes pose a significant challenge for such intracellular communication. This challenge is met by mechanisms ranging from rapid signals encoded in calcium waves to s...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2014.12.001
更新日期:2015-02-01 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a lethal disease that is characterized by the relentless death of motoneurons. Mutations to Cu-Zn superoxide dismutase (SOD), though occurring in just 2-3% of individuals with ALS, remain the only proven cause of the disease. These mutations structurally weaken SOD, which indirec...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(00)01981-0
更新日期:2001-11-01 00:00:00
abstract::Sensory representations are repeatedly transformed by neural computations that determine which of their attributes can be effectively processed at each stage. Whereas some early computations are common across multiple sensory systems, they can utilize dissimilar underlying mechanisms depending on the properties of eac...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/j.tins.2009.12.004
更新日期:2010-03-01 00:00:00
abstract::Synaptically released glutamate activates extrasynaptic receptors; such actions are controlled by glutamate uptake. Recent experimental findings show that there are many more glutamate transporters on the postsynaptic than presynaptic side of the vicinity of central synapses. This asymmetry favours activation of axona...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/s0166-2236(02)02230-0
更新日期:2002-10-01 00:00:00
abstract::It might appear curious to read about yeast, slime molds and protozoa in a journal dedicated to neuroscience. However, despite their distinct lack of synapses, eukaryotic microorganisms hold a wealth of information relevant to the signal-transduction pathways that underly activity in neuronal receptor cells, particula...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/0166-2236(94)90076-0
更新日期:1994-02-01 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::In contrast to innocuous stimuli, which only have transient effects when applied to the body surface, noxious stimuli generate persistent changes in the nervous system. This nociceptive memory manifests itself most prominently as a post-injury sensitization where, after tissue damage, the avoidance reaction and pain t...
journal_title:Trends in neurosciences
pub_type: 杂志文章,评审
doi:10.1016/0166-2236(91)90024-o
更新日期:1991-02-01 00:00:00