Abstract:
:Optic nerve crush injury leads to death of retinal ganglion cells (RGCs), both as a direct result of the primary injury and via secondary degeneration induced by neurotoxins secreted by dying RGCs. Studies have shown that, if optic nerve crush is preceded by an unrelated injury to another part of the central nervous system, for example, the spinal cord, the ensuing T cell-mediated protective autoimmunity results in a significant increase in RGC survival. In this study, we used the controlled cortical impact paradigm to induce unilateral traumatic brain injury (TBI) in rats at different times before they were contralaterally subjected to a mild optic nerve crush. Survival of RGCs, assessed 2 weeks after crush injury, was significantly increased when the crush was inflicted 11 days after TBI, but not when the two injuries were concomitant. The beneficial effect was unaffected by injection of low-dose methylprednisolone MP (1 mg/kg), but was inhibited after a high-dose injection (30 mg/kg). Brain-derived neurotrophic factor (BDNF) mRNA, assayed at intervals after TBI, was increased in the retina ipsilateral to TBI but decreased in the contralateral retina. BDNF peaked 1 day after TBI, decreased on day 11, and rose again on day 21. It thus seems that brain injury sustained a certain time before optic nerve injury has a protective effect on RGC survival. This neuroprotective effect, which appears unrelated to retinal BDNF, is inhibited by high-dose MP, commonly used clinically to treat traumatic optic neuropathy.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
Ben Simon GJ,Hovda DA,Harris NG,Gomez-Pinilla F,Goldberg RAdoi
10.1089/neu.2006.23.1072subject
Has Abstractpub_date
2006-07-01 00:00:00pages
1072-82issue
7eissn
0897-7151issn
1557-9042journal_volume
23pub_type
杂志文章abstract::Statins constitute a class of medications commonly used in the treatment of elevated cholesterol. However, in experimental studies, statins also have other non-cholesterol-mediated mechanisms of action, which may have neuroprotective effects. The aim of this study was to determine whether administration of atorvastati...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4717
更新日期:2017-02-27 00:00:00
abstract::This study was designed to assess the effect of spinal cord injury on neurobehavioral, electrophysiological, structural, and biochemical changes in normal and diabetic rats. Experimental diabetes was induced in Sprague-Dawley male rats (weighing 250-280 g) with streptozotocin (50 mg/kg i.p.). Eight weeks after the tre...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1998.15.239
更新日期:1998-04-01 00:00:00
abstract::Acute changes in cerebral perfusion and metabolism after subarachnoid hemorrhage (SAH) have been shown to contribute significantly to acute brain injury. The purpose of this study was to examine the effects of moderate hypothermia on the acute changes after massive experimental SAH as evaluated by diffusion-weighted i...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2007.0443
更新日期:2008-07-01 00:00:00
abstract::Concussive brain injury (CBI) accounts for approximately 75% of all brain-injured people in the United States each year and is particularly prevalent in contact sports. Concussion is the mildest form of diffuse traumatic brain injury (TBI) and results in transient cognitive dysfunction, the neuropathologic basis for w...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2010.1729
更新日期:2011-04-01 00:00:00
abstract::Outcome of traumatic brain injury (TBI) is impaired by hyperglycemia, hypotension, and glutamate, and improved by insulin. Insulin reduces glutamate concentration, making it uncertain whether its beneficial effect accrues from euglycemia. Glucagon decreases CNS glutamate, lessens neuronal cell injury, and improves neu...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2010.1659
更新日期:2011-03-01 00:00:00
abstract::Traumatic brain injury (TBI) is associated with loss of autoregulation due to impaired responsiveness to cerebrovascular dilator stimuli, which leads to cerebral hypoperfusion and neuronal impairment or death. Upregulation of tissue plasminogen activator (tPA) post-TBI exacerbates loss of cerebral autoregulation and N...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2328
更新日期:2012-06-10 00:00:00
abstract::The aim of this study was to evaluate the neuroprotective efficacy of the inert gas xenon as a treatment for patients with blast-induced traumatic brain injury in an in vitro laboratory model. We developed a novel blast traumatic brain injury model using C57BL/6N mouse organotypic hippocampal brain-slice cultures expo...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5360
更新日期:2018-04-15 00:00:00
abstract::Recommendations on treatment of patients with head injury were recently proposed by the National Institute for Clinical Excellence (NICE). We tested the clinical performance of NICE variables versus the proposal of the Neurotraumatology Committee of the World Federation of Neurosurgical Societies (NCWFNS). Over a 5-ye...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2005.22.1419
更新日期:2005-12-01 00:00:00
abstract::Spinal cord injury (SCI) launches a complex cascade of events that leads to progressive damage and loss of function. Compromise of plasma membrane integrity due to the mechanical impact is an acute event that may contribute to cellular dysfunction. Therefore, the objective of this study was to better understand the ex...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2008.0523
更新日期:2009-04-01 00:00:00
abstract::Central nervous system injuries such as focal brain ischemia and trauma are known to initiate inflammatory reactions. To demonstrate the involvement of adhesion molecules in these inflammatory responses, we have observed significant increases of ICAM-1 and ELAM-1 mRNA expression in the ischemic cortex of rats by means...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.1995.12.825
更新日期:1995-10-01 00:00:00
abstract::Neuropsychological studies in electrical injury patients have reported deficits in attention, learning, and working memory, but the neural substrates of these deficits remain poorly characterized. In this study we sought to examine whether electrical injury subjects demonstrate abnormal patterns of brain activation du...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2008.0867
更新日期:2009-10-01 00:00:00
abstract::Traumatic brain injury (TBI) is a complex injury that has a multi-faceted recovery process. The current "gold standard" for classifying severity of TBI symptoms is the Glasgow Outcome Scale (GOSE), a crude measure of overall dysfunction after TBI. Exploratory factor analysis performed on TRACK-TBI Pilot (N = 297) iden...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7222
更新日期:2021-01-15 00:00:00
abstract::Traumatic brain injury (TBI) induces vascular changes that may influence neurological outcome by causing the brain to be more susceptible to secondary ischemic insults. In rat models of TBI, L-arginine administration has been shown to restore cerebral blood flow and improve neurological outcome. The purpose of this st...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771502753594891
更新日期:2002-03-01 00:00:00
abstract::Mild traumatic brain injury (mTBI) has gained considerable notoriety during the past decade of conflict in Afghanistan and Iraq. However, the relationship between combat-related mTBI and residual mTBI symptoms, post-traumatic stress disorder (PTSD) symptoms, and neurocognitive deficits remains unclear. The purpose of ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2506
更新日期:2013-04-15 00:00:00
abstract::Previous meta-analyses of methylprednisolone (MPS) for patients with acute traumatic spinal cord injuries (TSCIs) have not addressed confidence in the quality of evidence used for pooled effect estimates, and new primary studies have been recently published. We aimed to determine whether MPS improves motor recovery an...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,meta分析,评审
doi:10.1089/neu.2015.4192
更新日期:2016-03-01 00:00:00
abstract::The horizontal ladder task is an established method to assess skilled locomotor recovery after neurological dysfunction. Walking speed is often used as a standardized measure in locomotor assessment of overground walking in human and pre-clinical studies, but the assessment of walking speed is typically ignored during...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.6152
更新日期:2019-09-15 00:00:00
abstract::This study characterizes the histological and immunohistochemical changes in the adult rat spinal cord following photochemically induced spinal cord lesions. The spinal cord was exposed by laminectomy (T12-L1 vertebrae) and bathed with 1.5% rose bengal solution for 10 min. The excess dye was removed by saline rinse an...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771503765355559
更新日期:2003-05-01 00:00:00
abstract::Despite clinical symptoms, a large majority of people with mild traumatic brain injury (TBI) have normal computed tomography (CT) and magnetic resonance imaging (MRI) scans. Therefore, present-day neuroimaging tools are insufficient to diagnose or classify low grades of TBI. Advanced neuroimaging techniques, such as d...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7151
更新日期:2021-01-11 00:00:00
abstract::Traumatic brain injury (TBI) is an established risk factor for neurodegenerative disorders and dementias. Epigenetic modifications, such as DNA methylation, may alter the expression of genes without altering the DNA sequence in response to environmental factors. We hypothesized that DNA methylation changes may occur i...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7283
更新日期:2021-01-08 00:00:00
abstract::Following a traumatic brain injury (TBI), excessive release of proinflammatory cytokines is the major cause of cerebral edema and neuronal loss. This study was designed to examine changes in concentrations of some proinflammatory cytokines-including interleukin-1 beta (IL-1β), interleukin 6 (IL-6), tumor necrosis fact...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2010.1686
更新日期:2013-01-01 00:00:00
abstract::In terms of human suffering, medical expenses, and lost productivity, head injury is one of the major health care problems in the United States, and inadequate cerebral blood flow is an important contributor to mortality and morbidity after traumatic brain injury. Despite the importance of cerebral vascular dysfunctio...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/089771503322385755
更新日期:2003-09-01 00:00:00
abstract::A systematic review of the literature was performed to address pertinent clinical questions regarding deep vein thrombosis (DVT) prophylaxis in the setting of acute spinal cord injury (SCI). Deep vein thromboses are a common occurrence following SCI. Administration of low-molecular-weight heparin (LMWH) within 72 h of...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2009.1155-A
更新日期:2011-08-01 00:00:00
abstract::A critical component for accelerating the clinical uptake of research data in the area of pediatric concussion or mild traumatic brain injury (MTBI) pertains to the establishment and utilization of common databases. The objective of the first phase of our CanPedCDE initiative was to agree upon pediatric common data el...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.5887
更新日期:2018-08-15 00:00:00
abstract::Alterations in glutamatergic transmission are thought to contribute to secondary neuronal damage following traumatic brain injury. Using an in vitro cell injury model, we previously demonstrated an apparent reduction in AMPA receptor desensitization and resultant potentiation of AMPA-evoked currents after stretch inju...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/0897715041269704
更新日期:2004-06-01 00:00:00
abstract::Laser Doppler flowmetry (LDF) was used to study acute ipsilateral and contralateral disturbances of regional cerebral blood flow (rCBF) in a rat model of cerebral cortical contusion trauma. Twelve rats were intubated and artificially ventilated during and after trauma. Injury was produced with a weight drop technique ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1996.13.201
更新日期:1996-04-01 00:00:00
abstract::The lack of effective therapies for moderate-to-severe traumatic brain injuries (TBIs) leaves patients with lifelong disabilities. Neural stem cells (NSCs) have demonstrated great promise for neural repair and regeneration. However, direct evidence to support their use as a cell replacement therapy for neural injuries...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2019.6443
更新日期:2020-06-01 00:00:00
abstract::A better understanding of long-term functional recovery process for patients with traumatic brain injury (TBI) facilitates effective rehabilitations. The aim of this study was to classify and characterize patients with moderate-to-severe TBI based on their functional trajectories up to 5 years post-injury. The study i...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5299
更新日期:2018-07-15 00:00:00
abstract::Penetrating brain injury (PBI) is the most devastating type of traumatic brain injury. Development of coagulopathy in the acute setting of PBI, though common, remains of unclear significance as does its reversal. The aim of this study is to investigate the relationship between coagulopathy and clinical presentation, r...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7422
更新日期:2021-01-20 00:00:00
abstract::The optimum spinal cord perfusion pressure (SCPP) after traumatic spinal cord injury (TSCI) is unknown. Here, we describe techniques to compute and display the optimum SCPP in real time. We recruited adults within 72 h of severe TSCI (American Spinal Injuries Association [ASIA] grades A-C). A pressure probe and a micr...
journal_title:Journal of neurotrauma
pub_type: 临床试验,杂志文章
doi:10.1089/neu.2017.4982
更新日期:2017-11-01 00:00:00
abstract::The rat hippocampus is hypersensitive to secondary cerebral ischemia after mild traumatic brain injury (TBI). An unconfirmed assumption in previous studies of mild TBI followed by forebrain ischemia has been that antecedent TBI did not alter cerebral blood flow (CBF) dynamics in response to secondary ischemia. Using l...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1998.15.615
更新日期:1998-08-01 00:00:00