Abstract：
:Retinal and cortical lesions are completely different events that trigger visual cortical plasticity. We therefore compared the cortical effects of homonymous lesions of the central retina with effects of cortical lesions. All in vivo experiments were performed in anaesthetized, adult cats. Retinal lesions were made with a Xenon-light photocoagulator, and cortical lesions were induced by focal application of heat or ibotenic acid injection. Both, in cortical regions representing the retinal scotoma and at the border of small focal cortical lesions single neuron activity was initially suppressed and accompanied by a narrow area of increased activity adjacent to the region of functional loss during the first 1-2 weeks. At the same time an increased glutamatergic NMDA response and a reduction of GABA(A) and GABA(B) responses was observed around the cortical lesions in vitro. At an early stage long-term potentiation (LTP) is facilitated in those regions that were characterized by local upregulation of excitation and downregulation of inhibition after cortical lesions. Similarly, at the border of cortical scotomas in area 17 an increased glutamate level was found while inside the scotoma GAD levels were reduced. Shifts in topography of retinal representation as well as increases of receptive field size were detected as signs of lesion-induced neuronal reorganization after retinal and cortical lesions with longer survival times. A common cascade of events is triggered in the visual cortex by retinal as well as cortical lesions: reduced GABAergic inhibition and increased glutamatergic excitation, leading to increased spontaneous activity and visual excitability that is accompanied by facilitated LTP, and appears to initiate local cortical reorganization after functional disturbances in the visual system.
journal_name
Restor Neurol Neuroscijournal_title
Restorative neurology and neuroscienceauthors
Eysel UT,Schweigart G,Mittmann T,Eyding D,Qu Y,Vandesande F,Orban G,Arckens Lsubject
Has Abstractpub_date
1999-01-01 00:00:00pages
153-64issue
2-3eissn
0922-6028issn
1878-3627journal_volume
15pub_type
杂志文章abstract：:Injury of the nervous system initiates a cascade of signal transduction including a rise in extracellular glutamate which leads to subsequent secondary neuronal loss. Excitotoxicity is known to play a crucial role in cell death spinal cord trauma. Gangliosides, particularly monosialogangliosides (GM1), are protective ...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:Basic science studies demonstrated mechanisms of plasticity and metaplasticity. More recent human studies identified some of these mechanisms as operating in multiple areas of human cognition, such as learning and memory, and in functional recovery from lesions in the CNS, as in stroke. One of the goals of neurorehabi...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章,评审
doi：
更新日期：2004-01-01 00:00:00
abstract：:We are interested in the role cyclic AMP may play as a mediator of growth factor-induced gene expression in regenerating peripheral nerves. As a first step, we investigated mRNA levels and protein synthesis in intact frog dorsal root ganglia (DRG) treated with the adenylate cyclase activator, forskolin in vitro. Forsk...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1990-13408
更新日期：1990-01-01 00:00:00
abstract：BACKGROUND:The dopamine system plays a key role in motor learning and neuroplasticity. Several studies have studied the efficacy of dopaminergic drugs in enhancing motor recovery after stroke, but the effects are controversial. Although genetic variations in plasticity-related genes influence each individual's capacity...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-160667
更新日期：2016-11-22 00:00:00
abstract：:Granule cells of the dentate gyrus can be selectively destroyed by intrahippocampal injections of colchicine. The present study evaluates the consequences of this selective neuronal destruction on the afferent axon terminals which have been deprived of their normal targets. The area of the neuropil in the dentate gyru...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1992-3605
更新日期：1992-01-01 00:00:00
abstract：:The application of brain stimulation techniques for modulation of cortical excitability changes underlying spatial neglect following right-brain-damage has been the first application of brain stimulation in the rehabilitation setting. Several factors concur in making neglect a prototype of cognitive disorders that can...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章,评审
doi：10.3233/RNN-2011-0613
更新日期：2011-01-01 00:00:00
abstract：:The effects of striatal transplantation of PC12 cells on amphetamine-induced rotational behavior and monoamine levels were examined in rats with unilateral 6-hydroxydopamine (6-OHDA) lesions in the nigrostriatal pathway. A total of 9 × 104 or 9 × 105 cells of PC12 was implanted into 3 sites in the striatum and changes...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1993-6105
更新日期：1993-01-01 00:00:00
abstract：PURPOSE:Traumatic brain injury (TBI) -induced brain edema can be reduced by acute progesterone (PROG) treatment in young adult males and females, and in aged males. To extend these findings we tested these hypotheses: 1. Acute PROG treatment post-TBI will reduce cortical edema in aged females as much as in young adults...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-2009-0475
更新日期：2009-01-01 00:00:00
abstract：PURPOSE:To investigate the effect and underlying mechanism of Aceglutamide on motor dysfunction in rats after cerebral ischemia-reperfusion. METHODS:Adult male Sprague-Dawley rats were subjected to 2 h transient middle cerebral artery occlusion (MCAO). Aceglutamide or vehicle was intraperitoneally given to rats at 24 ...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-150509
更新日期：2015-01-01 00:00:00
abstract：PURPOSE:The relationship between auditory temporal-order perception and phoneme discrimination has been discussed for several years, based on findings, showing that patients with cerebral damage in the left hemisphere and aphasia, as well as children with specific language impairments, show deficits in temporal-process...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Wound-derived trophic factors released by the injured brain are thought to reach a peak 1-2 weeks after injury. It has been proposed that such factors can promote the survival, growth and functional capacity of embryonic tissue grafts. To test the generality of this hypothesis, control rats and rats with aspirative fi...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1989-1109
更新日期：1989-01-01 00:00:00
abstract：:IVth International Symposium on Neural TransplantationEdited by William J. Freed and Jeffrey M. RosensteinThe George Washington University, Washington, DC, USAJuly 12-16, 1992. ...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1992-4301
更新日期：1992-01-01 00:00:00
abstract：OBJECTIVE:To report the safety and efficacy of a novel therapeutic trial with umbilical cord blood (UCB) and concomitant recombinant human erythropoietin (rhEPO), which was tried for three cases of severe traumatic brain injury (TBI) in rehabilitation. DESIGN:Case series. SETTING:University hospital setting. PARTICI...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-120289
更新日期：2013-01-01 00:00:00
abstract：:Bridging large defects in mixed nerves is still an unsolved problem in reconstructive microsurgery. Two main aspects may be distinguished: one is to obtain an appropriate substitute for the lost neural tissue, the second to direct fibers toward their previous end-organs with the highest possible specificity. In the pr...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1997-11306
更新日期：1997-01-01 00:00:00
abstract：PURPOSE:The aim of the present study was to explore the use of two-photon microscopy for investigating the therapeutic time window of methylprednisolone (MP) treatment after spinal cord injury (SCI). METHODS:Twenty-four YFP H-line mice were subjected to hemisection SCI and then divided into four groups. Group 1 receiv...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-140463
更新日期：2015-01-01 00:00:00
abstract：:Animals with unilateral neurotoxic lesions in the striatum exhibit a stereotypical biased rotational behavior in response to dopamine agonists. We recently argued that the rotational test may be subject to sensitization effects of the drug. Accordingly, we proposed the drug-free elevated body swing test (EBST) as an a...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1995-9103
更新日期：1995-01-01 00:00:00
abstract：:Fetal cerebral cortical tissue was transplanted into an aspirated lesion cavity made in the sensorimotor cortex of adult rats. Ten weeks after grafting, outgrowing fibers from the graft were visualized by an anterograde tracing technique using Phaseolus vulgaris leucoagglutinin (PHA-L). It was demonstrated that the ef...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1993-55604
更新日期：1993-01-01 00:00:00
abstract：:Pyramidal neurons inside transplants of embryonic nervous tissue are capable of generating axonal extrinsic hippocampal fiber connections over considerable distances to appropriate target areas in the mature brain. The establishment of long-distance graft efferents to the lateral septum and to the entorhinal cortex wa...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1991-3103
更新日期：1991-01-01 00:00:00
abstract：PURPOSE:The interest in human conscious awareness has increasingly propelled the study of neglect, the most striking occurrence of an acquired lack of conscious experience of space. Neglect syndromes commonly arise after unilateral brain damage that spares primary sensory areas nonetheless leading to a lack of consciou...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章,评审
doi：
更新日期：2006-01-01 00:00:00
abstract：:Many ocular diseases (such as glaucoma, diabetic retinopathy, age-related macular degeneration, and traumatic eye injuries) can result in the degeneration of retinal cells and the subsequent loss of vision. Some kinds of treatments, such as drugs, stem cell transplantation and surgery are reported to be effective in c...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章,评审
doi：10.3233/RNN-190945
更新日期：2019-01-01 00:00:00
abstract：PURPOSE:To assess whether insights from postural control without additional visual feedback (VFB) could be gained to explain the possible VFB effects (or non-effects) on upright stance performance. METHODS:The center-of-pressure (CP) displacements of 39 patients with a recent hemispheric stroke (93 days ± 56; mean ± s...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-2010-0544
更新日期：2010-01-01 00:00:00
abstract：:In the present study, we have developed an animal model for central nervous system (CNS) damage using the graded crush injury of the adult rat optic nerve. This injury model has the following characteristics: (a) the injuries are reproducible; (b) the injuries can be created with controlled severity; and (c) variation...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1990-2104
更新日期：1990-01-01 00:00:00
abstract：BACKGROUND:Virtual reality (VR) has the potential to provide intensive, repetitive, and task-oriented training, and game-based therapy can enhance patients' motivation and enjoyment. OBJECTIVE:The objective of the present study was to develop a mobile game-based upper extremity VR program for patients who have experie...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章,随机对照试验
doi：10.3233/RNN-150626
更新日期：2016-05-02 00:00:00
abstract：:Administration of gangliosides accelerates recovery of function after entorhinal cortex lesions on open field activity and learned spatial alternation tasks. In the present study, we examined whether GM1 ganglioside might enhance recovery from bilateral entorhinal cortex lesions on a differential reinforcement of low-...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：PURPOSE:Immunomodulatory agents are often combined in organ transplantation to minimize toxicity and enhance therapeutic effect. We hypothesized that combining low-dose FK506 with anti-CD40 Ligand (anti-CD40L mAb) would enhance regeneration through peripheral nerve allografts while preserving immune unresponsiveness. ...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：PURPOSE:A realistic body representation needs to be constantly updated. In case of physiological modifications, body representations integrate information coming from different sensory sources, including the sense of touch. Previous studies described transient modifications of these representations following illusory d...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-120286
更新日期：2013-01-01 00:00:00
abstract：BACKGROUND:Parkinson's Disease (PD) is characterized by progressive and disabling symptoms. An impaired oxidative metabolism efficiency was supposed to be involved in the systemic impairment. Rehabilitative treatment represents a valid tool in promoting skeletal muscle's adaptations, even if no solid studies on muscle ...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-170738
更新日期：2018-01-01 00:00:00
abstract：BACKGROUND:In low vision patients, the assessment of contrast sensitivity is an essential tool to determine the stage of visual impairment. However, traditional contrast sensitivity tests rely on verbal feedback, and the expertise of the examiner. OBJECTIVE:In the current study, a fast, OKN-based virtual diagnosis too...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-190937
更新日期：2020-01-01 00:00:00
abstract：BACKGROUND:High definition transcranial direct current stimulation (HD-tDCS) has been administered over single brain regions for small numbers of sessions. Safety, feasibility and tolerability of HD-tDCS over multiple brain regions, multiple daily stimulations and long periods are not established. OBJECTIVE:We studied...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-170757
更新日期：2017-01-01 00:00:00
abstract：:Many of the present limitations of peripheral nerve repair might be overcome by performing nerve repairs at the axon level. One approach to nerve repair at this level would be to implant a neuroprosthesis in the form of a microelectronic switchboard which could route the connections of regenerated axons to their corre...
journal_title：Restorative neurology and neuroscience
pub_type： 杂志文章
doi：10.3233/RNN-1990-2205
更新日期：1990-01-01 00:00:00
