Abstract:
:Long axons and their enwrapping glia (EG; Schwann cells (SCs) and oligodendrocytes (OLGs)) form a unique compound structure that serves as conduit for transport of electric and chemical information in the nervous system. The peculiar cytoarchitecture over an enormous length as well as its substantial energetic requirements make this conduit particularly susceptible to detrimental alterations. Degeneration of long axons independent of neuronal cell bodies is observed comparatively early in a range of neurodegenerative conditions as a consequence of abnormalities in SCs and OLGs . This leads to the most relevant disease symptoms and highlights the critical role that these glia have for axon integrity, but the underlying mechanisms remain elusive. The quest to understand why and how axons degenerate is now a crucial frontier in disease-oriented research. This challenge is most likely to lead to significant progress if the inextricable link between axons and their flanking glia in pathological situations is recognized. In this review I compile recent advances in our understanding of the molecular programs governing axon degeneration, and mechanisms of EG's non-cell autonomous impact on axon-integrity. A particular focus is placed on emerging evidence suggesting that EG nurture long axons by virtue of their intimate association, release of trophic substances, and neurometabolic coupling. The correction of defects in these functions has the potential to stabilize axons in a variety of neuronal diseases in the peripheral nervous system and central nervous system (PNS and CNS).
journal_name
Front Cell Neuroscijournal_title
Frontiers in cellular neuroscienceauthors
Beirowski Bdoi
10.3389/fncel.2013.00256subject
Has Abstractpub_date
2013-12-19 00:00:00pages
256issn
1662-5102journal_volume
7pub_type
杂志文章,评审abstract::Stressors, during early life or adulthood, can alter steroid-sensitive behaviors, such as exploration, anxiety, and/or cognitive processes. We investigated if exposure to acute stressors in adulthood may alter behavioral and neuroendocrine responses of male rats that were exposed to gestational stress or not. We hypot...
journal_title:Frontiers in cellular neuroscience
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doi:10.3389/fncel.2012.00040
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abstract::After damage, axons in the peripheral nervous system (PNS) regenerate and regrow following a process termed Wallerian degeneration, but the regenerative process is often incomplete and usually the system does not reach full recovery. Key steps to the creation of a permissive environment for axonal regrowth are the tra...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2019.00093
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journal_title:Frontiers in cellular neuroscience
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
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abstract::Hippocampal inhibitory interneurons exhibit a large diversity of dendritic Ca2+ mechanisms that are involved in the induction of Hebbian and anti-Hebbian synaptic plasticity. High resolution imaging techniques allowed examining somatic Ca2+ signals and, accordingly, the recruitment of hippocampal interneurons in awake...
journal_title:Frontiers in cellular neuroscience
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更新日期:2019-03-15 00:00:00
abstract:OBJECTIVE:Neuroinflammation in utero may result in life-long neurological disabilities. The molecular mechanisms whereby microglia contribute to this response remain incompletely understood. METHODS:Lipopolysaccharide (LPS) or saline were administered intravenously to non-anesthetized chronically instrumented near-ter...
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pub_type: 杂志文章
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abstract::The immune system provides protection in the CNS via resident microglial cells and those that traffic into it in the course of pathological challenges. These populations of cells are key players in modulating immune functions that are involved in disease outcomes. In this review, we briefly summarize and highlight the...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
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更新日期:2019-07-31 00:00:00
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abstract::Chronic inflammation and oxidative stress (OS) are present in Alzheimer's disease (AD) brains in addition to neuronal loss, Amyloid-β (Aβ) plaques and hyperphosphorylated tau-protein neurofibrillary tangles (NFTs). Previously we showed that levels of the pro-inflammatory cytokine, interleukin-18 (IL-18), are elevated ...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
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abstract::Increasing evidence suggest that astrocytes significantly modulate neuronal function at the level of the tripartite synapse both in physiological and pathophysiological conditions. The global control of the astrocytic syncytium over neuronal networks, however, is still less recognized. Here we examined astrocytic sign...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2015.00215
更新日期:2015-06-18 00:00:00
abstract::In the primary motor cortex (M1), layer 5 projection neurons signal directly to distant motor structures to drive movement. Despite their pivotal position and acknowledged diversity these neurons are traditionally separated into broad commissural and corticofugal types, and until now no attempt has been made at resolv...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2013.00174
更新日期:2013-10-16 00:00:00
abstract::Neurons typically receive synaptic input in their dendritic arbor, integrate inputs in their soma, and send output action potentials through their axon, following Cajal's law of dynamic polarization. Two notable exceptions are retinal amacrine cells and olfactory granule cells (GCs), which flout Cajal's edict by provi...
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pub_type: 杂志文章,评审
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2013.00125
更新日期:2013-08-12 00:00:00
abstract::The remarkable ability of the nervous system to modify its structure and function is mostly experience and activity modulated. The molecular basis of neuronal plasticity has been studied in higher behavioral processes, such as learning and memory formation. However, neuronal plasticity is not restricted to higher brai...
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pub_type: 杂志文章
doi:10.3389/fncel.2013.00105
更新日期:2013-07-04 00:00:00
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
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abstract::In relapsing-remitting multiple sclerosis (RRMS) subtype, the patient's brain itself is capable of repairing the damage, remyelinating the axon and recovering the neurological function. Cerebrospinal fluid (CSF) is in close proximity with brain parenchyma and contains a host of proteins and other molecules, which infl...
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journal_title:Frontiers in cellular neuroscience
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journal_title:Frontiers in cellular neuroscience
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00310
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
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journal_title:Frontiers in cellular neuroscience
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journal_title:Frontiers in cellular neuroscience
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
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