Abstract：
:Peripheral nerve regeneration proceeds through a series of phases which include axonal sprouting, elongation, and maturation. Each phase requires interaction between intrinsic properties of the injured neuron and nonneural elements in the environment into which the nerve grows. It has been difficult, however, to separate processes which depend on the induction of a cell body response from those which may depend on local factors at the site of injury. Recently, we found that frog peripheral nerves, in animals housed at 15 degrees C, were able to initiate regeneration in the absence of an apparent cell body response. Subsequently, we found that these nerves did not continue to regenerate normally. I investigated the ultrastructure of regenerating nerves from frogs kept at 15 degrees C for 92 days after a freeze-lesion. Injured sciatic nerves showed extensive axonal sprouting at the lesion site but little continued growth distal to the injury, indicating an impairment in elongation and maturation. Nonneural cells in the local environment showed extensive distributions of rough endoplasmic reticulum and free ribosomes near the regenerative sprouts but the type and quantity of protein actually being synthesized was not determined. The basis for the suppression of axonal growth remains unknown but in the absence of an apparent cell body response it appears probable that a necessary cell body contribution to regeneration was also absent. That contribution could provide direct support to axonal growth or could trigger periaxonal support of regeneration. This experimental preparation offers a means of investigating those alternatives and the opportunity to determine the origin of the various processes responsible for nerve regeneration.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Carlsen RCdoi
10.1016/0014-4886(83)90251-0subject
Has Abstractpub_date
1983-10-01 00:00:00pages
159-71issue
1eissn
0014-4886issn
1090-2430pii
0014-4886(83)90251-0journal_volume
82pub_type
杂志文章abstract：:Successful clinical application of fMRI tasks requires reliable knowledge about the brain structures mapped by the task. With memory fMRI, diverging evidence exists concerning the location of major signal sources as well as hippocampal contributions. To clarify these issues, we investigated a frequently applied memory...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2008.05.019
更新日期：2008-09-01 00:00:00
abstract：:Activation of the visual system with a moving black and white geometric pattern resulted in dense patches or columns of 2-deoxyglucose label in primate extrastriate visual cortex. The three-dimensional reconstruction of these metabolic columns showed that they were arranged in irregularly shaped slabs which extended i...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(84)90148-1
更新日期：1984-08-01 00:00:00
abstract：:The nontoxic C fragment of tetanus toxin (TC) can transport other proteins from the circulation to central nervous system (CNS) motor neurons. Increased levels of CuZn superoxide dismutase (SOD) are protective in experimental models of stroke and Parkinson's disease, whereas mutations in SOD can cause motor neuron dis...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1997.6490
更新日期：1997-06-01 00:00:00
abstract：:A 168-nucleotide exon, found in alternatively spliced amyloid precursor protein (APP) mRNAs, encodes a Kunitz protease inhibitor (KPI) domain. Kainic acid (ip) caused a selective increase of KPI mRNA in rat hippocampus. By in situ hybridization, KPI mRNA was induced in the neuronal layers of the hippocampus 11-12 h af...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(92)90191-r
更新日期：1992-12-01 00:00:00
abstract：:Injury of a peripheral nerve not only leads to target denervation, but also induces massive stripping of spinal synapses on axotomized motoneurons, with disruption of spinal circuits. Even when regeneration is successful, unspecific reinnervation and the limited reconnection of the spinal circuits impair functional re...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.10.009
更新日期：2015-01-01 00:00:00
abstract：:We administered tetrahydroaminoacridine (THA), a cholinesterase inhibitor, to rats with bilateral nucleus basalis magnocellularis lesions and measured their performance in a spatial learning task. The subjects, 34 male Fischer-344 rats, received bilateral excitotoxic NBM lesions; 10 other rats served as unlesioned con...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(90)90126-d
更新日期：1990-06-01 00:00:00
abstract：:Cells dissociated from 6-day rat cerebellum were seeded on glass coverslips coated with polylysine on one half and hyaluronectin on the other. Cell attachment and neurite extension were drastically reduced on hyaluronectin-coated surfaces. ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(88)90218-x
更新日期：1988-04-01 00:00:00
abstract：:The roles of activated NF-kappaB subunits in the CNS remain to be discerned. Members of this family of transcription factors are essential to diverse physiological processes and can be activated by pathogens, stress, pharmacological agents, and trauma. We are particularly interested in long-term NF-kappaB activation a...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2002.7967
更新日期：2002-08-01 00:00:00
abstract：:Estimates were made of the changing volumes of discharge arising from the total populations of Ia and II spindle afferent fibers in the cat's deefferented medial gastrocnemius as the muscle was extended stepwise over its excursion range. The estimates were based on values reported elsewhere for (i) the incidence of ac...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(83)90017-1
更新日期：1983-04-01 00:00:00
abstract：:Ca2+ influx through NMDA receptor-gated channels and the subsequent rise in intracellular Ca2+ concentration ([Ca2+]i) have been implicated in cytotoxic processes that lead to irreversible neuronal injury. While many studies have focused on cytosolic Ca2+ homeostasis, much less is known about Ca2+ fluxes in subcellula...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1997.6599
更新日期：1998-01-01 00:00:00
abstract：:Quisqualate (Quis) and other excitotoxins such as ibotenate and N-methyl aspartate, have been used to destroy neurons in the area of the nucleus basalis magnocellularis (NBM) in order to study the relationship between loss of cholinergic neurons in the basal forebrain and various behavioral deficits, including learnin...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1994.1046
更新日期：1994-03-01 00:00:00
abstract：:Epidermal growth factor responsive (EGFr) neural progenitor (NP) cells have been shown to be a potential alternative tissue source for neural transplantation and for developmental study. We have shown that nonpassaged EGFr NP cells can self-renew for 2 years in neurospheres and can robustly differentiate into glia and...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2000.7425
更新日期：2000-07-01 00:00:00
abstract：:The beta-Amyloid peptide (A beta) is hypothesized to mediate the neurodegeneration seen in Alzheimer's disease. Recently, we proposed a new hypothesis to explain the toxicity of A beta based on the free-radical generating capacity of A beta. We have recently demonstrated using electron paramagnetic resonance (EPR) spe...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(95)90041-1
更新日期：1995-02-01 00:00:00
abstract：:CNS damage often results in demyelination of spared axons due to oligodendroglial cell death and dysfunction near the injury site. Although new oligodendroglia are generated following CNS injury and disease, the process of remyelination is typically incomplete resulting in long-term functional deficits. Chondroitin su...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2013.04.003
更新日期：2013-09-01 00:00:00
abstract：:This study reevaluated the possibility of using predegenerated nerves as donor nerve allografts for nerve repair and compared the results of functional recovery to those obtained after standard, fresh nerve allograft repair. Twenty donor rats underwent a ligature/ section of the left sciatic nerve 4 weeks before nerve...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1997.6667
更新日期：1997-11-01 00:00:00
abstract：:Methylmalonic acidemia is an inherited metabolic disorder that leads to brain damage associated to the accumulation of methylmalonic acid (MMA) and impairment of energy metabolism. We demonstrate here that treatment with diazoxide, an agonist of mitochondrial ATP-sensitive K(+) channels (mitoK(ATP)), can prevent death...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2006.04.004
更新日期：2006-09-01 00:00:00
abstract：:The piriform cortex is recognized to play critical roles in focal ictogenesis, both in animal models and in humans. We review here the contribution of in vitro studies performed on rodent brain tissue that were aimed at understanding the ictogenic properties of the piriform cortex and the contiguous olfactory areas. D...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2019.113014
更新日期：2019-11-01 00:00:00
abstract：:Recent studies have implicated nitric oxide (NO) in several mechanisms related to neuronal degeneration and synaptic plasticity. In the present study, two models of traumatic neuronal injury were used to examine the expression of NOS following neuronal injury and its relationship to axonal sprouting and neuronal degen...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1993.1050
更新日期：1993-04-01 00:00:00
abstract：:Amyotrophic lateral sclerosis [ALS] is a rapidly progressive neurodegenerative disorder of motor neurons, heralded by the development of cortical hyperexcitability. Reduction of short interval intracortical inhibition [SICI] in ALS, a feature linked to the development of cortical hyperexcitability, may be mediated by ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2009.08.017
更新日期：2009-11-01 00:00:00
abstract：:The contribution of chondroitin sulfate proteoglycan (CSPG) in the suppression of axonal growth in rat spinal cord has been examined by means of an in vitro bioassay in which regenerating neurons are grown on tissue section substrata. Dissociated embryonic chick dorsal root ganglionic neurons were grown on normal and ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1998.6951
更新日期：1998-12-01 00:00:00
abstract：:The effects of delta-9-tetrahydrocannabinol on sensory activity in the thalamic intralaminar nuclei, centralis lateralis and the mesencephalic reticular formation were compared with the effects on cortical association or heterosensory systems in alpha-chloralose-anesthetized cats. The drug depressed the anterior margi...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(87)90121-x
更新日期：1987-09-01 00:00:00
abstract：:We present here an example case of neuropathic pain with heat allodynia as a major symptom to illustrate how the functional imaging of pain may provide new insights into the pathophysiology of painful sensory disorders. Tissue injury of almost any kind, but especially peripheral or central neural tissue injury, can le...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2003.07.006
更新日期：2003-11-01 00:00:00
abstract：:Chronically axotomized motoneurons progressively fail to regenerate their axons. Since axonal regeneration is associated with the increased expression of tubulin, actin and GAP-43, we examined whether the regenerative failure is due to failure of chronically axotomized motoneurons to express and sustain the expression...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.10.022
更新日期：2015-02-01 00:00:00
abstract：:There is a consensus that active sleep (AS; i.e., REM sleep) is produced by cholinergic projections from the pedunculopontine tegmental nuclei (PPT) that activate AS-on neurons in the nucleus pontis oralis (NPO) that are components of the AS-Generator. However, there is a growing body of evidence indicating that other...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2012.08.001
更新日期：2012-11-01 00:00:00
abstract：:Abnormal corticostriatal plasticity is a key mechanism of L-DOPA-induced dyskinesia (LID) in Parkinson's disease (PD). Antagonists at glutamatergic α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors, such as IEM 1460, reduce induction and expression of dyskinesia in rat and non-human primate models ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2013.01.019
更新日期：2013-09-01 00:00:00
abstract：:Functional regeneration of brainstem-spinal pathways occurs in the developing chick when the spinal cord is severed prior to embryonic day (E) 13. Functional spinal cord regeneration is not observed in animals injured after E13. This developmental transition from a permissive to a restrictive repair period may be due ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2000.7496
更新日期：2000-11-01 00:00:00
abstract：:As early as 1928, Cajal suggested that plaques contain a trophic substance which attracts neurites. Recently, basic fibroblast growth factor (bFGF) levels were shown to be elevated in Alzheimer's disease (AD) and localized to plaques and neurofibrillary tangles. We sought to clarify the subtype of plaques which contai...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1993.1202
更新日期：1993-12-01 00:00:00
abstract：:Neural stem cell (NSC) transplantation provides a new approach for the repair of damage to the central nervous system (CNS), including that resulting from cerebral infarction and spinal cord injury (SCI). In the past, there were no reputable means of converting non-neural somatic cells into neural cells. This status w...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2012.09.016
更新日期：2014-10-01 00:00:00
abstract：:A new mutant, peroneal muscular atrophy (pma) mouse in CF#1 strain has an autosomal recessively inherited equinovarus (club foot deformity) of the hind legs because of the absence of the common peroneal nerve branch of the sciatic nerve. We found the peroneal muscles were hypoplastic with histochemical and electron mi...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(86)90053-1
更新日期：1986-03-01 00:00:00
abstract：:Interactions between neurotrophic factors and neurotransmitters participate in the formation and maintenance of appropriate connections, as well as in neurodegenerative processes. Here we have measured changes in the developmental expression pattern of BDNF and NT-3 in the striatum, cortex, and substantia nigra induce...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2000.7451
更新日期：2000-09-01 00:00:00
