Abstract：
:Secondary degeneration is a form of 'bystander' damage that can affect neural tissue both nearby and remote from an initial injury. Partial optic nerve transection is an excellent model in which to unequivocally differentiate events occurring during secondary degeneration from those resulting from primary CNS injury. We analysed the primary injury site within the optic nerve (ON) and intact areas vulnerable to secondary degeneration. Areas affected by the primary injury showed morphological disruption, loss of beta-III tubulin axonal staining, reduced myelinated axon density, greater proteoglycan expression (phosphacan), increased microglia and macrophage numbers and increased oxidative stress. Similar, but less extreme, changes were seen in areas of the optic nerve undergoing secondary degeneration. The CNS-specific L- and T-type calcium channel blocker lomerizine alleviated some of the changes in areas vulnerable to secondary degeneration. Lomerizine reduced morphological disruption, oxidative stress and phosphacan expression, and limited early increases in macrophage numbers. However, lomerizine failed to prevent progressive de-myelination of ON axons. Within the retina, secondary retinal ganglion cell (RGC) death was significant in areas vulnerable to secondary degeneration. Lomerizine protected RGCs from secondary death at 4 weeks but did not fully restore behavioural function (optokinetic nystagmus). We conclude that blockade of calcium channels is neuroprotective and limits secondary degenerative changes following CNS injury. However such an approach may need to be combined with other treatments to ensure long-term maintenance of full visual function.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Fitzgerald M,Bartlett CA,Evill L,Rodger J,Harvey AR,Dunlop SAdoi
10.1016/j.expneurol.2008.11.026subject
Has Abstractpub_date
2009-03-01 00:00:00pages
219-30issue
1eissn
0014-4886issn
1090-2430pii
S0014-4886(08)00466-4journal_volume
216pub_type
杂志文章abstract：:The longitudinal distributions of both phrenic and medial gastrocnemius motoneurons were quantitatively studied in the cat spinal cord. Both populations of motoneurons were retrogradely labeled by applying horseradish peroxidase (HRP) to the cut central ends of the appropriate peripheral nerves. The longitudinal posit...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(84)90089-x
更新日期：1984-12-01 00:00:00
abstract：:Systematic protein expression studies in the brain of exercising and sedentary animals have not been carried out so far and it was therefore decided to determine differences in metabolic protein levels in rat hippocampus of sedentary, voluntary and involuntary exercising rats by a proteomic approach. Aged, male Spragu...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2008.03.014
更新日期：2008-07-01 00:00:00
abstract：:A graded contusion spinal cord injury (SCI) was created in the adult rat spinal cord using the Infinite Horizons (IH) impactor to study the correlation between injury severity and anatomical, behavioral, and electrophysiological outcomes. Adult Fisher rats were equally divided into five groups and received contusion i...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2004.08.026
更新日期：2005-02-01 00:00:00
abstract：:Paired-pulse potentiation was studied in the CA1 region of rats exposed prenatally to alcohol. Pregnant rats were fed a liquid diet containing 35% ethanol-derived calories on days 3 to 21 of gestation. Control animals were fed liquid diets without ethanol. When the pups of both groups were 40 to 60 days old, hippocamp...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(86)90203-7
更新日期：1986-08-01 00:00:00
abstract：:Microglia were described by Pio del Rio-Hortega (1932) as being the 'third element' distinct from neurons and astrocytes. Decades after this observation, the function and even the very existence of microglia as a distinct cell type were topics of intense debate and conjecture. However, considerable advances have been ...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2011.11.012
更新日期：2012-04-01 00:00:00
abstract：:Abnormal oscillatory activity in the basal ganglia is increasingly implicated in the pathophysiology of Parkinson's disease. Such activity is recorded in patients in the form of oscillations in the local field potential (LFP) picked up in the subthalamic nucleus. Previous studies have focused on correlations between f...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2012.04.024
更新日期：2012-08-01 00:00:00
abstract：:The pathophysiology of the tics that define Gilles de la Tourette syndrome (TS) is not well understood. Local disinhibition within the striatum has been hypothesized to play a pathogenic role. In support of this, experimental disinhibition by local antagonism of GABA-A receptors within the striatum produces tic-like p...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2015.01.001
更新日期：2015-03-01 00:00:00
abstract：:Chronic nerve compression (CNC) injuries induce a robust Schwann cell proliferation in a distinct spatial and temporal pattern, which is accompanied by an increase in the number of small un-myelinated axons in the area of the injury. These findings suggest that this local proliferation of Schwann cells may induce loca...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2006.02.134
更新日期：2006-08-01 00:00:00
abstract：:Infants born very preterm are at high risk for neurological deficits including cerebral palsy. In this study we assessed the neuroprotective effects of umbilical cord blood cells (UCBCs) and optimal administration timing in a fetal sheep model of preterm brain injury. 50 million allogeneic UCBCs were intravenously adm...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2016.06.017
更新日期：2016-09-01 00:00:00
abstract：:When antibodies specific to fast-twitch, slow-twitch, and slow-tonic myosins were used to stain the clasp muscle, m. sternoradialis, of Xenopus laevis, three predominant fiber types were identified in both males and females. Three fiber types can also be distinguished by the diameters and conduction velocities of thei...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(83)90414-4
更新日期：1983-11-01 00:00:00
abstract：:delta-Aminolevulinic acid (ALA), a toxic precursor of porphyrin, when injected i.v. failed to enter most brain structures, such as the cortex, thalamus, midbrain, and others, as determined by the autoradiographic technique. However, the choroid plexus, median eminence, and a narrow strip of the periventricular zone, w...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(83)90234-0
更新日期：1983-02-01 00:00:00
abstract：:Nerve injury frequently results in development of chronic, dysesthetic pain and allodynia (painful sensation in response to benign stimulation). Following nerve injury, spinal cord glia become activated and secrete a number of inflammatory cytokines, including interleukin-1 (IL-1), which exists as two genetically dist...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2009.03.022
更新日期：2009-06-01 00:00:00
abstract：:Intranuclear inclusion bodies are a shared pathological feature of Huntington's disease (HD) and its transgenic mouse model. Using a panel of antibodies spanning the entire huntingtin molecule, we have investigated the pattern of immunoreactivity within the intranuclear inclusions in the frontal cortex and striatum of...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1998.7005
更新日期：1999-03-01 00:00:00
abstract：:Fluoxetine is one of the most promising drugs for improving clinical outcome in patients with ischemic stroke. This in vivo study investigated the hypothesis that fluoxetine may affect HIF-1α-Netrin/VEGF cascade, angiogenesis and neuroprotection using a rat model of transient middle cerebral artery occlusion (tMCAO). ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2020.113312
更新日期：2020-07-01 00:00:00
abstract：:The conditioned corral preference paradigm was used to assess reinforcing effects of substance P (SP) and its N- and C-terminal fragments injected unilaterally into the region of the nucleus basalis magnocellularis (NBM) in rats. Behavioral testing was carried out in a circular open field, consisting of 4 quadrants eq...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(92)90063-v
更新日期：1992-02-01 00:00:00
abstract：:We previously reported that 1 month following unilateral loss (>95%) of striatal dopamine, there is an increase in striatal glutamate function as measured by in vivo microdialysis and quantitative immuno-gold electron microscopy, Neuroscience 88, 1-16). The goal of this study was to determine the effect of bilateral l...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/s0014-4886(02)00050-x
更新日期：2003-03-01 00:00:00
abstract：:Graft-induced dyskinesia has emerged as a problematic side effect after transplantation of fetal dopamine cells into the striatum of patients with Parkinson's disease. These adverse effects of dystonic and choreatiform hyperkinesias that persisted even after withdrawal of L-DOPA medication are not yet fully understood...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2011.09.017
更新日期：2011-12-01 00:00:00
abstract：:The influence that the amygdala may exert on the development of hippocampal kindling was investigated using three different approaches: (i) after uni- or bilateral amygdalectomy by thermocoagulation, (ii) after prestimulation of the amygdala until the appearance of masticatory movements, and (iii) after increasing the...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(83)90416-8
更新日期：1983-11-01 00:00:00
abstract：:Spinal cord injury (SCI) results in chronic pain states in which the underlying mechanism is poorly understood. To begin to explore possible mechanisms, calcitonin gene-related peptide (CGRP), a neuropeptide confined to fine primary afferent terminals in laminae I and II in the dorsal horn of the spinal cord and impli...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1997.6608
更新日期：1997-10-01 00:00:00
abstract：:To ascertain whether signaling due to peripheral inflammation affects motoneuron vulnerability, we examined in adult rats the reaction to axonal injury of facial motoneurons primed by muscle inflammation. In this double-hit paradigm, preconditioning was achieved by injections into the facial muscles of the T cell mito...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2002.7908
更新日期：2002-07-01 00:00:00
abstract：:Previous studies have shown that the herpes simplex virus type 2 protein kinase ICP10 PK activates the Ras/MEK/MAPK pathway in nonneuronal cells. Here we report that ectopically expressed ICP10 PK has anti-apoptotic activity in various paradigms of neuronal cell death. Neuronally differentiated PC12 cells and primary ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2001.7849
更新日期：2002-03-01 00:00:00
abstract：:In order to study the ocular dominance and responsiveness of cells in the deafferented visual cortex, the geniculate and the callosal inputs were interrupted in adult cats by either simultaneous (OTCCX) or separate surgical transection of the optic tract (OTX) and the posterior corpus callosum (CCX). Unit recording wa...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(88)90174-4
更新日期：1988-03-01 00:00:00
abstract：:We have analyzed the effects of environmental enrichment (EE) in a seizure-prone mouse model in which the genetic disruption of the presynaptic protein Bassoon leads to structural and functional alterations in the hippocampus and causes early spontaneous seizures mimicking human neurodevelopmental disorders. One-month...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.05.010
更新日期：2014-11-01 00:00:00
abstract：:We have recently shown that tanycytes present in the median eminence (ME) constitute a preferential support for the regeneration of lesioned neurohypophysial oxytocinergic and vasopressinergic axons. However, although tanycytes are particularly abundant in the ME, they are also present along the third ventricle wall. ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1998.6784
更新日期：1998-05-01 00:00:00
abstract：:A previous study of our group demonstrated that movement performance induced by dopamine agonist drugs in hemiparkinsonian rats unilaterally lesioned with 6-hydroxydopamine (6-OHDA), governs the occurrence of a sensitized motor response to a subsequent dopaminergic challenge (priming model). In the present study, we e...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2013.03.002
更新日期：2013-09-01 00:00:00
abstract：:The GluN2 subunits that compose N-methyl-d-aspartate receptors (NMDARs) are attractive drug targets for therapeutic intervention in several diseases, in particular Parkinson's disease (PD). The precise roles and possible dysfunctions of NMDARs attributed to specific GluN2 subunits are however unresolved. Through the u...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.03.001
更新日期：2014-05-01 00:00:00
abstract：:Typical antipsychotic drugs (APDs) with D2antagonistic properties impede functional outcome after experimental traumatic brain injury (TBI) and reduce the effectiveness of environmental enrichment (EE). Here we test the hypothesis that aripiprazole (ARIP), an atypical APD with partial D2and 5-HT1Areceptor agonist acti...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2019.01.010
更新日期：2019-04-01 00:00:00
abstract：:Olfactory ensheathing cells (OECs) have been investigated extensively as a therapy to promote repair in the injured CNS, with variable efficacy in numerous studies over the previous decade. In many studies that report anatomical and functional recovery, the beneficial effects have been attributed to the ability of OEC...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2010.08.012
更新日期：2011-05-01 00:00:00
abstract：:the antiexcitotoxic efficacy of melatonin, a putative endogenous hydroxyl radical scavenger, was studied in primary cultures of rat cerebellar granule neurons. Excitotoxicity was induced in 7- to 9-day-old cultures by an exposure to glutamate (15 min in the absence of magnesium) or to glutamate receptor agonists, kain...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(95)90005-5
更新日期：1995-01-01 00:00:00
abstract：:The effect of frequency potentiation on the postsynaptic potential in granule cells was studied stimulating the perforant path in curarized and urethanized rats. At stimulation frequencies between 2.0-5.0 Hz, synaptic efficacy in eliciting an orthodromic action potential increased despite the hyperpolarization of the ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(91)90148-6
更新日期：1991-07-01 00:00:00
