Abstract:
:Aging may be an important factor affecting brain injury by intracerebral hemorrhage (ICH). In the present study, we investigated the responses of glial cells and monocytes to intracerebral hemorrhage in normal and aged rats. ICH was induced by microinjecting autologous whole blood (15 microL) into the striatum of young (4 month old) and aged (24 month old) Sprague-Dawley rats. Age-dependent relations of brain tissue damage with glial and macrophageal responses were evaluated. Three days after ICH, activated microglia/macrophages with OX42-positive processes and swollen cytoplasm were more abundantly distributed around and inside the hemorrhagic lesions. These were more dramatic in aged versus the young rats. Western blot and immunohistochemistry analyses showed that the expression of interleukin-1beta protein after ICH was greater in aged rats, whereas the expression of GFAP and ciliary neurotrophic factor protein after ICH was significantly lower in aged rats. These results suggest that ICH causes more severe brain injury in aged rats most likely due to overactivation of microglia/macrophages and concomitant repression of reactive astrocytes.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
Lee JC,Cho GS,Choi BO,Kim HC,Kim WKdoi
10.1089/neu.2008.0630subject
Has Abstractpub_date
2009-09-01 00:00:00pages
1567-76issue
9eissn
0897-7151issn
1557-9042journal_volume
26pub_type
杂志文章abstract::Fluid percussion (FP) brain injury causes spatial memory dysfunction in rats regardless of injury location (midline vs. lateral). Standard histological analysis of the injured brains shows hippocampal neuronal loss after lateral, but not midline FP injury. We have used the optical volume fractionator (OVF) stereologic...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771503770195786
更新日期:2003-10-01 00:00:00
abstract::Acute administration of a monoclonal antibody (mAb) raised against the CD11d subunit of the leukocyte CD11d/CD18 integrin after spinal cord injury (SCI) in the rat greatly improves neurological outcomes. This has been chiefly attributed to the reduced infiltration of neutrophils into the injured spinal cord in treated...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.1976
更新日期:2012-02-10 00:00:00
abstract::Over the last decade, biomarker research has identified potential biomarkers for the diagnosis, prognosis, and management of traumatic brain injury (TBI). Several cerebrospinal fluid (CSF) and serum biomarkers have shown promise in predicting long-term outcome after severe TBI. Despite this increased focus on identify...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2578
更新日期:2013-06-01 00:00:00
abstract::Researchers studying the impact of treatments designed to facilitate recovery after neural injury face competing demands. On the one hand, because treatment effects often emerge slowly over days, and because researchers seek evidence of stable long-term effects, it is common practice to observe experimental subjects f...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771504772695995
更新日期:2004-01-01 00:00:00
abstract::This study aimed to investigate the cortical motor excitability characteristics in diffuse axonal injury (DAI) due to severe traumatic brain injury (TBI). A variety of excitatory and inhibitory transcranial magnetic stimulation (TMS) paradigms were applied to primary motor cortices of 17 patients and 11 healthy contro...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2008.0859
更新日期:2009-12-01 00:00:00
abstract::The EPO-TBI multi-national randomized controlled trial found that erythropoietin (EPO), when compared to placebo, did not affect 6-month neurological outcome, but reduced illness severity-adjusted mortality in patients with traumatic brain injury (TBI), making the cost-effectiveness of EPO in TBI uncertain. The curren...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1089/neu.2018.6229
更新日期:2019-09-01 00:00:00
abstract::Hearing impairment can be one of the more subtle deficits seen after closed head injury (CHI), and it may not be diagnosed until late in the recovery phase if at all. Most studies have assessed patients immediately after CHI. Repeated assessments at regular intervals were not performed in the majority of studies done ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2009.0957
更新日期:2010-02-01 00:00:00
abstract::Mild traumatic brain injury (mTBI) accounts for the majority of head trauma cases. Despite some lasting cognitive, emotional, and behavioral deficits, there are frequently no overt morphological defects, suggesting that changes may result from alterations in the physiology of individual neurons. We investigated hippoc...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.2192
更新日期:2012-04-10 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::Urokinase (uPA) and tissue plasminogen activator (tPA) are serine proteases implicated in fibrinolysis, but their role in the regulation of the cerebrovascular response to brain trauma has not been investigated. This study was designed to (1) characterize the cerebrovascular activity of uPA and tPA, (2) investigate th...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2004.21.1204
更新日期:2004-09-01 00:00:00
abstract::Previous studies have shown that oxygen radical scavengers prevent the reduced cerebral blood flow that occurs following experimental traumatic brain injury. The exact chemical species responsible for the posttraumatic reduction in flow is unknown. We tested whether isoprostanes, which are formed by non-cyclooxygenase...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2000.17.415
更新日期:2000-05-01 00:00:00
abstract::Although the citation index of an article is not a direct measure of its quality or importance, it is a measure of recognition that may suggest its impact on the scientific community. This study was undertaken to examine the characteristics of the top 100 most frequently cited articles (so-called "citation classics") ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2006.23.156
更新日期:2006-02-01 00:00:00
abstract::Proton magnetic resonance spectroscopy (1H-MRS) offers a unique insight into brain cellular metabolism following traumatic brain injury (TBI). The aim of the present study was to assess change in neurometabolite markers of brain injury during the recovery period following TBI. We studied 19 TBI patients at 1.5, 3, and...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771500415382
更新日期:2000-08-01 00:00:00
abstract::Improving survival and brain function after initial resuscitation from cardiac arrest remains a critical challenge with few therapeutic options. The publication of several randomized controlled trials supporting the use of therapeutic hypothermia in cardiac arrest survivors has provided a remarkable opportunity to red...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2008.0588
更新日期:2009-03-01 00:00:00
abstract::Experimental enhancement of noradrenergic activity following traumatic brain injury (TBI) accelerates behavioral recovery if performed at a time when brain norepinephrine (NE) turnover is decreased. But, since NE turnover is markedely increased immediately after TBI, the present study was undertaken to evaluate the ef...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1997.14.43
更新日期:1997-01-01 00:00:00
abstract::The excessive generation of free radicals is thought to be one of the major mechanisms leading to tissue injury in various pathological conditions, including ischemia, inflammation, and trauma. Conversion of xanthine dehydrogenase (XDH) to xanthine oxidase (XO) contributes to the formation of superoxide, an oxygen rad...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1991.8.11
更新日期:1991-04-01 00:00:00
abstract::Cultured astrocytes, exposed to glutamate at a dose that is generally neurotoxic in vitro (1 mM), exhibit transient swelling in the absence of cell death. In the present study, we further characterize this response by examining the distribution of intermediate filaments and evaluating cellular ultrastructure in primar...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1992.9.255
更新日期:1992-10-01 00:00:00
abstract::Traumatic brain injuries (TBI) sustained in combat frequently co-occur with significant bodily injuries. Intuitively, more extensive bodily injuries might be associated with increased symptom reporting. In 2012, however, French et al. demonstrated an inverse relation between bodily injury severity and symptom reportin...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3401
更新日期:2014-10-01 00:00:00
abstract::The relative safety and efficacy of direct versus indirect methods of spinal cord stimulation for the production of descending motor-evoked responses was studied in pentobarbital-anesthetized rats (n = 39). Electrical stimuli were delivered for 1 h, either directly to the cord dorsum using silver ball electrodes or in...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1991.8.27
更新日期:1991-04-01 00:00:00
abstract::Although mechanisms involved in progression of cell death in spinal cord injury (SCI) have been studied extensively, few are clear targets for translation to clinical application. One of the best-understood mechanisms of cell survival in SCI is phosphatidylinositol-3-kinase (PI3K)/Akt and associated downstream signali...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.6294
更新日期:2019-09-15 00:00:00
abstract::Diagnosis and early prognosis of the vegetative state/unresponsive wakefulness syndrome (VS/UWS) and its differentiation from the minimally-conscious state still rest on the clinical observation of responsiveness. The incidence of established clinical indicators of responsiveness also has proven variable in the single...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3539
更新日期:2015-07-15 00:00:00
abstract::Patients with spinal cord injury (SCI) typically experience body weight loss, motor function deficits, and a general decline of physical fitness. Animal models with these characteristics can serve to study the detailed adaptive changes following SCI. In the present study, we report the use of an adult paraplegic mouse...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/0897715041651060
更新日期:2004-08-01 00:00:00
abstract::Microdialysis sampling was used to characterize the release of norepinephrine and serotonin upon impact injury to the rat spinal cord. Increases in extracellular norepinephrine concentrations in response to injury were small and of short duration. In contrast, serotonin concentrations quickly rose 35-90 times followin...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1990.7.219
更新日期:1990-01-01 00:00:00
abstract::The effects of ethanol intoxication on brain injury and cerebral blood flow (CBF) were investigated in a porcine fluid-percussion model of traumatic brain injury (TBI). Immature swine, under halothane anesthesia (1%), had a TBI delivered with a fluid-percussion device. The experimental group (n = 10) received ethanol ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1993.10.275
更新日期:1993-10-01 00:00:00
abstract::Secondary insults, such as hemorrhagic shock (HS), worsen outcome from traumatic brain injury (TBI). Both TBI and HS modulate levels of inflammatory mediators. We evaluated the addition of HS on the inflammatory response to TBI. Adult male C57BL6J mice were randomized into five groups (n=4 [naïve] or 8/group): naïve; ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.2985
更新日期:2014-08-15 00:00:00
abstract::The object of this study was to investigate the relationships of age on neurologic and functional outcome, hospitalization length of stay (LOS), and hospital charges after spinal cord injury (SCI). At 20 medical centers, 2,169 consecutive adult patients with paraplegia SCI were assessed in acute care and inpatient reh...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究
doi:10.1089/neu.1999.16.805
更新日期:1999-09-01 00:00:00
abstract::Ischemic insults to the brain in stroke or traumatic brain injury produce excessive release of glutamate from depolarized nerve terminals. This excessive glutamate release in turn stimulates massive calcium entry into nerve cells, activating a biochemical cascade that results in cell death. A major pathway of calcium ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:
更新日期:1992-05-01 00:00:00
abstract::Central nervous system (CNS) destruction in spinal cord injury (SCI) is caused by a complex series of cellular and molecular events. Recent studies have concentrated on signaling by receptors in the tumor necrosis factor receptor (TNFR) superfamily that mediate diverse biological outcomes ranging from inflammation to ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2006.23.335
更新日期:2006-03-01 00:00:00
abstract::The Glasgow Coma Scale (GCS) score is used in clinical practice for patient assessment and communication among clinicians and also in outcome prediction models such as the Trauma and Injury Severity Score (TRIS). The objective of this study is to determine which GCS subscore is best associated with outcome, taking tim...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2438
更新日期:2013-01-01 00:00:00
abstract::Accumulating evidence suggests that the extent of brain injury and the clinical outcome after traumatic brain injury (TBI) are modulated, to some degree, by genetic variants. Aquaporin-4 (AQP4) is the predominant water channel in the central nervous system and plays a critical role in controlling the water content of ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3347
更新日期:2014-12-01 00:00:00