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 implicated in pain transmission, was selected. Immunocytochemical techniques were used to examine the temporal and spatial distribution of CGRP in the spinal cord following T-13 spinal cord hemisection in adult male Sprague-Dawley rats compared to that seen in sham controls. Spinal cords from both hemisected and sham control groups (N = 5, per time point) were examined on postoperative day (POD) 3, 5, 7, 14, and 108 following surgery. Sham operated rats displayed CGRP immunoreaction product in laminae I and II outer, Lissauer's tract, dorsal roots, and motor neurons of the ventral horn. In the hemisected group, densiometric data demonstrated an increased deposition of reaction product that was statistically significant, in laminae III and IV, both ipsilateral and contralateral to the lesion that extended at least two segments rostral and caudal to the hemisection site by POD 14, and remained significantly elevated as long as POD 108. Since upregulation alone of CGRP would occur in an acute temporal window (by 2 to 3 days following spinal injury), these results are interpreted to be invasion of laminae III and IV by sprouting of CGRP containing fine primary afferents. Intrathecal delivery of antibodies against purified 2.5S nerve growth factor for 14 days to the hemisected group resulted in CGRP density in laminae I through IV that was significantly less than that seen in untreated or vehicle treated hemisected groups and to sham controls. These data indicate changes in density and distribution of CGRP following spinal hemisection that can be manipulated by changes in endogenous levels of NGF. These observations suggest possible strategies for intervention in the development of various pain states in human SCI.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Christensen MD,Hulsebosch CEdoi
10.1006/exnr.1997.6608subject
Has Abstractpub_date
1997-10-01 00:00:00pages
463-75issue
2eissn
0014-4886issn
1090-2430pii
S0014-4886(97)96608-5journal_volume
147pub_type
杂志文章abstract::Recovery from injury to the central nervous system (CNS) is limited in the mammalian adult. Nonetheless, some degree of spontaneous recovery occurs after partial CNS injury. Compensatory axonal growth from uninjured neurons, termed sprouting, contributes to this naturally occurring recovery process and can be modulate...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2018.07.013
更新日期:2018-11-01 00:00:00
abstract::In mammals, free d-aspartate (D-Asp) is abundant in the embryonic brain, while levels remain very low during adulthood as a result of the postnatal expression and activity of the catabolizing enzyme d-aspartate oxidase (DDO). Previous studies have shown that long-lasting exposure to nonphysiological, higher D-Asp conc...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2019.02.014
更新日期:2019-07-01 00:00:00
abstract::It has been >20 years since studies first revealed that the brain is insulin sensitive, highlighted by the expression of insulin receptors in neurons and glia, the presence of circulating brain insulin, and even localized insulin production. Following these discoveries, evidence of decreased brain insulin receptor num...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1016/j.expneurol.2018.12.007
更新日期:2019-03-01 00:00:00
abstract::The neuronal basis for neurological deficits in infantile hydrocephalus is poorly understood. Changes in the dendritic architecture of pyramidal cells of the auditory cortex have been measured at 21 days after birth in H-Tx rats. Tissue was prepared by the rapid Golgi method from hydrocephalic and control litter-mates...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1996.0161
更新日期:1996-10-01 00:00:00
abstract::Previous two-dimensional (2-D) gel electrophoretic studies of proteins secreted by degenerating mammalian peripheral nerves (Ignatius et al., 1986, Proc. Natl. Acad. Sci. USA 83: 1125-1129; Muller et al., 1986, J. Cell Biol. 102: 393-402) detected the up-regulation of two proteins of 67-70 and 34-37 kDa, although they...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1999.7332
更新日期:2000-03-01 00:00:00
abstract::Contusive spinal cord injury (SCI) results in the formation of a chronic lesion cavity surrounded by a rim of spared fibers. Tissue bridges containing axons extend from the spared rim into the cavity dividing it into chambers. Whether descending axons can grow into these trabeculae or whether fibers within the trabecu...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2001.7734
更新日期:2001-09-01 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::The alpha-secretase-derived form of the amyloid precursor protein (sAPPalpha), which is released from neurons in an activity-dependent manner, has been shown to promote long-term survival of hippocampal and cortical neurons in culture and can protect those neurons against excitotoxic and ischemic injury in culture and...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2002.7920
更新日期:2002-06-01 00:00:00
abstract::The present study demonstrates that the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) causes significantly greater reductions in striatal dopamine levels in C57/bl mice than in CD-1 mice, thus confirming a greater sensitivity of the C57/bl mice to MPTP. To determine the possible reasons for this diffe...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1994.1058
更新日期:1994-04-01 00:00:00
abstract::Targeting interhemispheric inhibition using brain stimulation has shown potential for enhancing stroke recovery. Following stroke, increased inhibition originating from the contralesional hemisphere impairs motor activation in ipsilesional areas. We have previously reported that low-intensity electrical theta burst st...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2019.113071
更新日期:2020-01-01 00:00:00
abstract::We examined c-Fos and FosB staining in the central nervous system 8 and 24 h following acute volume expansion in unanesthetized rats. Male rats were instrumented with a femoral artery catheter for measurement of blood pressure and heart rate (HR), a jugular venous catheter for measurement of central venous pressure (C...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2004.01.020
更新日期:2004-05-01 00:00:00
abstract::It has been reported that the severe cerebral edema produced in experimental animals by Clostridium perfringens (Cl p) type D epsilon toxin can be prevented by prior treatment with its precursor prototoxin due to competitive binding to endothelial cells (ECs) at the blood-brain barrier (BBB). In this study we investig...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2001.7652
更新日期:2001-05-01 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::Estetrol (E4) is a recently described natural estrogen with four hydroxyl-groups that is synthesized exclusively during pregnancy by the human fetal liver. It has important antioxidative activity. The aim of the present study was to define the importance of E4 in the attenuation of neonatal hypoxic-ischemic encephalop...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2014.07.015
更新日期:2014-11-01 00:00:00
abstract::Rationale exists for suspecting that angiotensin (Ang) and arginine vasopressin (AVP) given by the intracerebroventricular (IVT) route can affect cerebrospinal fluid (CSF) pressure. This hypothesis was tested in conscious, unrestrained adult male Sprague-Dawley rats with IVT and left carotid arterial catheters. The ra...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(83)90405-3
更新日期:1983-11-01 00:00:00
abstract::Organotypic cultures of the brain provide a unique opportunity to directly examine the regional vulnerability of specific brain regions like the hippocampus. Two well-characterized models of oxidative stress were used to examine the regional vulnerability of the hippocampus. Endogenous oxidative stress was induced by ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1997.6673
更新日期:1998-01-01 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::Myelin accelerates action potential conduction velocity and provides essential energy support for axons. Unfortunately, myelin and myelinating cells are often vulnerable to injury or disease, resulting in myelin damage, which in turn can lead to axon dysfunction, overt pathology and neurological impairment. Inflammati...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1016/j.expneurol.2016.05.001
更新日期:2016-09-01 00:00:00
abstract::l-DOPA therapy in Parkinson's disease often results in side effects such as l-DOPA-induced dyskinesia (LID). Our previous studies demonstrated that defective desensitization of dopamine receptors caused by decreased expression of G protein-coupled receptor kinases (GRKs) plays a role. Overexpression of GRK6, the isofo...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2015.02.008
更新日期:2015-04-01 00:00:00
abstract::Altered activity in one of the output nuclei of the basal ganglia, the internal segment of the globus pallidus, is known to play an important role in the generation of parkinsonism. These inactivation studies tested the hypothesis that altered activity in the second major output nucleus of the basal ganglia, the subst...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2000.7572
更新日期:2001-02-01 00:00:00
abstract::In previous studies on sensory axons we reported that the effect of a conditioning lesion on increasing regeneration rate was enhanced if the two lesions were superimposed, rather than made at separate sites on the nerve, and proposed that this was due to the growth of axons through nerve predegenerated by the conditi...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(85)90027-5
更新日期:1985-11-01 00:00:00
abstract::Falls are a major source of hospitalization, long-term institutionalization, and death in older adults and patients with Parkinson's disease (PD). Limited attentional resources are a major risk factor for falls. In this review, we specify cognitive-behavioral mechanisms that produce falls and map these mechanisms onto...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1016/j.expneurol.2014.04.032
更新日期:2014-07-01 00:00:00
abstract::Animal models treated with agricultural chemicals, such as rotenone, reproduce several degenerative features of human central nervous system (CNS) diseases. Glutamate is the most abundant excitatory amino acid transmitter in the mammalian central nervous system and its transmission is implicated in a variety of brain ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2007.09.023
更新日期:2008-01-01 00:00:00
abstract::Infant, juvenile, and adult brain growth is modulated by corticosterone. This study was designed to determine whether such modulation is confined to certain specific brain areas, and if the pattern of growth revealed is consistent across strains of rats. Young female Sprague-Dawley-derived rats were either adrenalecto...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(88)90229-4
更新日期:1988-12-01 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::The cellular events in traumatic brain injury (TBI) are complicated, and the factors mediating neurotrophins to protect and repair the injured brain cells are only beginning to be identified. This study examined the effect of dexamethasone (DEX) on neurotrophin-3 (NT-3) expression following TBI. Levels of NT-3 mRNA an...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2004.12.023
更新日期:2005-04-01 00:00:00
abstract::Diffuse axonal injury is thought to be the basis of the functional impairments stemming from mild traumatic brain injury. To examine how axons are damaged by traumatic events, such as motor vehicle accidents, falls, sports activities, or explosive blasts, we have taken advantage of the spinal cord with its extensive w...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2015.04.023
更新日期:2015-09-01 00:00:00
abstract::Injection of lysosomal enzyme into cisternal or ventricular cerebrospinal fluid (CSF) has been carried out in 11 lysosomal storage disorder models, with each study demonstrating reductions in primary substrate and secondary neuropathological changes, and several reports of improved neurological function. Whilst acute ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2014.09.008
更新日期:2015-01-01 00:00:00
abstract::Fibroblast Growth Factors (FGFs) and their receptors (FGFRs) are widely expressed in the mature nervous system and are thought to mediate plasticity and repair. We report the generation of transgenic mice that can be induced to express a dominant-negative FGFR (dnFGFR) in select neuronal populations. We show that a mo...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2005.12.020
更新日期:2006-04-01 00:00:00
abstract::Hypobaric hypoxia has been implicated with neural degeneration and memory loss. Though there has been considerable knowledge on the role of the p75(NTR) in triggering apoptosis, the occurrence of a similar mechanism in hypoxic stress still remains to be explored. We, in the present study, have tried to explore the rol...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2008.01.030
更新日期:2008-07-01 00:00:00