Abstract:
:Anatomical studies of spinal cord injury (SCI) using magnetic resonance imaging (MRI) report diverging observations, from "no changes" to "tissue atrophy in motor and non-motor regions." These discrepancies among studies can be attributed to heterogeneity in extent, level, and post-injury duration observed within the SCI population. But, no studies have investigated structural changes associated with different levels of injury (paraplegia vs. tetraplegia). High-resolution MRI images were processed using a voxel-based morphometry technique to compare regional gray matter volume (GMV) between 16 complete paraplegia and 7 complete tetraplegia SCI subjects scanned within 2 years of injury when compared to 22 age-matched healthy controls using one-way analysis of covariance (ANCOVA). A post-hoc analysis using a region of interest-based approach was utilized to quantify GMV differences between healthy controls and subgroups of SCI. A voxel-wise one-sample t-test was also performed to evaluate the mean effect of post-injury duration on GMV of the SCI group. ANCOVA resulted in altered GMV in inferior frontal gyrus, bilateral mid orbital gyrus extending to rectal gyrus, and anterior cingulate cortex. Post-hoc analysis, in general, indicated GM atrophy after SCI, but tetraplegia showed a greater decrease in GMV when compared to paraplegia and healthy controls. Further, the GMV of the middle frontal gyrus, superior frontal gyrus, inferior frontal gyrus, insula, mid-orbital gyrus, and middle temporal gyrus was positively correlated with post-injury duration in both paraplegia and tetraplegia groups. GM atrophy after SCI is affected by level of cord injury, with higher levels of injury resulting in greater loss of GMV. Magnitude of GMV loss in the frontal cortex after SCI also appears to be dynamic within the first 2 years of injury. Understanding the effect of injury level and injury duration on structural changes after SCI can help to better understand the mechanisms leading to positive and negative clinical outcome in SCI patients.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
Karunakaran KD,He J,Zhao J,Cui JL,Zang YF,Zhang Z,Biswal BBdoi
10.1089/neu.2018.6040subject
Has Abstractpub_date
2019-06-15 00:00:00pages
2045-2051issue
12eissn
0897-7151issn
1557-9042journal_volume
36pub_type
杂志文章abstract::The imaging and clinical examination (ICE) algorithm used in the Benchmark Evidence from South American Trials: Treatment of Intracranial Pressure (BEST TRIP) randomized controlled trial is the only prospectively investigated clinical protocol for traumatic brain injury management without intracranial pressure (ICP) m...
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.2016.4472
更新日期:2018-01-01 00:00:00
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 youn...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2008.0630
更新日期:2009-09-01 00:00:00
abstract::Following crush injury to the facial nerve in Syrian hamsters, treatment with androgens enhances axonal regeneration rates and decreases time to recovery. It has been demonstrated in vitro that the ability of androgen to enhance neurite outgrowth in motoneurons is dependent on neuritin-a protein that is involved in th...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2007.0466
更新日期:2008-05-01 00:00:00
abstract::Poor response inhibition is a hallmark of pediatric traumatic brain injury (TBI). We assessed motor response inhibition by measuring commission error rates on Simple (minimized cognitive demands) and Motivation (monetary reward) Go/No-Go tasks, comparing 17 children with chronic TBI (>1 year post-injury) and 14 matche...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5081
更新日期:2017-11-15 00:00:00
abstract::Moderate to severe traumatic brain injury (TBI) in humans and rats induces measurable metabolic changes, including a sustained depression in cerebral glucose uptake. However, the effect of a mild TBI on brain glucose uptake is unclear, particularly in rodent models. This study aimed to determine the glucose uptake pat...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.2928
更新日期:2013-12-01 00:00:00
abstract::The majority of clinical spinal cord injuries (SCIs) are contusive and occur at the cervical level of the spinal cord. Most scientists and clinicians agree that the preclinical evaluation of novel candidate treatments should include testing in a cervical SCI contusion model. Because mice are increasingly used because ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2405
更新日期:2013-05-15 00:00:00
abstract::We have investigated time course and characteristics of retinal ganglion cell (RGC) death after partial optic nerve injury. In situ end labeling of DNA fragments with the terminal deoxynucleotidyl transferase (TdT)-mediated deoxyuridine (dUTP)-biotin nick end labeling (TUNEL) method revealed the presence of apoptotic ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1999.16.153
更新日期:1999-02-01 00:00:00
abstract::The aims of this study were to assess the trajectories of community integration in individuals with traumatic brain injury (TBI) through one, two, and five years post-injury and to examine whether those trajectories could be predicted by demographic and injury characteristics. A longitudinal cohort study was conducted...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3844
更新日期:2016-01-01 00:00:00
abstract::While autonomic dysreflexia (AD) is well recognized in the chronic stage of spinal cord injury (SCI) this potentially life-threatening complication has been only rarely documented in the acute phase (1 month) after SCI. Based on our clinical experience we hypothesized that AD is under-recognized in the acute phase of ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771503767869944
更新日期:2003-08-01 00:00:00
abstract::Direct lateral cortical impact through the intact leptomeninges using a pneumatically driven piston produces increasingly severe pathophysiologic derangements with increasing cortical deformation. We studied the histopathologic correlates of cortical impact injury produced by 2 mm, 2.5 mm, and 3 mm deformation in the ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1994.11.587
更新日期:1994-10-01 00:00:00
abstract::Traumatic brain injury (TBI) results in an accumulation of edema and loss of brain tissue. Progesterone (PROG) has been reported to reduce edema and cortical tissue loss in a bilateral prefrontal cortex injury. This study tests the hypothesis that PROG is neuroprotective following a unilateral parietal cortical contus...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2007.0477
更新日期:2008-06-01 00:00:00
abstract::Peptides related to melanotropin (alphaMSH) and corticotropin (ACTH), collectively termed melanocortins, are known to improve the postlesion repair of injured peripheral nerves. In addition, melanocortins exert trophic effects on the outgrowth of neurites from central nervous system neurons in vitro. Here we report, f...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1999.16.543
更新日期:1999-06-01 00:00:00
abstract::Closed-head concussive injury is one of the most common causes of traumatic brain injury (TBI). Isolated concussions frequently produce acute neurological impairments, and individuals typically recover spontaneously within a short time frame. In contrast, brain injuries resulting from multiple concussions can result i...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4679
更新日期:2017-10-01 00:00:00
abstract::Traumatic brain injury (TBI) is a leading cause of death and disability. Yet, despite immense research efforts, treatment options remain elusive. Translational failures in TBI are often attributed to the heterogeneity of the TBI population and limited methods to capture these individual variabilities. Advances in mach...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7357
更新日期:2021-01-13 00:00:00
abstract::Perceived injustice is a belief that one has been treated unfairly and disrespectfully, and is suffering unnecessarily as a result of another person's actions. Perceived injustice predicts chronic disability after musculoskeletal injury but to our knowledge has not been empirically studied in people with mild traumati...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5402
更新日期:2018-05-15 00:00:00
abstract::The clinical manifestations that occur after traumatic brain injury (TBI) include a wide range of cognitive, emotional, and behavioral deficits. The loss of excitatory synapses could potentially explain why such diverse symptoms occur after TBI, and a recent preclinical study has demonstrated a loss of dendritic spine...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.2960
更新日期:2013-12-01 00:00:00
abstract::Recently, locomotor training has been shown to improve overground locomotion in patients with spinal cord injury (SCI). This has triggered renewed interest in the role of exercise in rehabilitation after SCI. However, there are no mouse models for voluntary exercise and recovery of function following SCI. Here, we rep...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2005.22.157
更新日期:2005-01-01 00:00:00
abstract::Despite the shift in demographics of spinal cord injury (SCI) due to an aging population, relatively little has been reported regarding the effect of age on outcomes after SCI. This study examines the potential confounding effect of co-morbidities on the age-related differences in the hospital mortality following acut...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2008.0764
更新日期:2009-08-01 00:00:00
abstract::Acute subdural hemorrhage (ASDH) is common and associated with severe morbidity and mortality. To date, the role of spontaneous cortical spreading depression (sCSD) in exaggerating secondary injury after ASDH, is poorly understood. The present study contains two experimental groups: First, we investigated and characte...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.5657
更新日期:2019-01-15 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::Glial cell line-derived neurotrophic factor (GDNF) has been shown to protect cranial and spinal motoneurons, which suggests potential uses of GDNF in the treatment of spinal cord injury (SCI) and motor neuron disease. We examined neuroprotective effect of cationic liposome-mediated GDNF gene transfer in vivo on axonal...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771502760341983
更新日期:2002-09-01 00:00:00
abstract::Risk factors for head injury are also risk factors for becoming homeless but there is little research on this vulnerable group, who can be neglected by health services that specialize in acquired brain injury. This study investigates the prevalence of admissions to hospital with a head injury in the homeless and assoc...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3387
更新日期:2015-01-15 00:00:00
abstract::Dementia pugilistica (DP) is associated with chronic traumatic brain injury (CTBI), and leads to a "punch drunk" syndrome characterized by impairments in memory and executive function, behavioral changes, and motor signs. Microscopic features include the accumulation of neurofibrillary tangles (NFTs), beta-amyloid (Aβ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.1957
更新日期:2012-04-10 00:00:00
abstract::This article addresses the need for age-relevant outcome measures for traumatic brain injury (TBI) research and summarizes the recommendations by the inter-agency Pediatric TBI Outcomes Workgroup. The Pediatric Workgroup's recommendations address primary clinical research objectives including characterizing course of ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,实务指引
doi:10.1089/neu.2011.1838
更新日期:2012-03-01 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::ABSTRACT Preliminary evidence has shown that intracerebral hemorrhages, either spontaneous (sICH) or traumatic (tICH) often expand over time. An association between hemorrhage expansion and clinical outcomes has been described for sICH. The intent of this prospective, observational study was to characterize the tempor...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究
doi:10.1089/neu.2007.0385
更新日期:2008-06-01 00:00:00
abstract::Paralysis is an indication for trauma patients to be preferentially triaged by emergency services to designated level I or II trauma centers (TC). We sought to describe triage practices for patients with acute traumatic spinal cord injury (TSCI) and its associated emergency department (ED) outcomes. Adults ages ≥ 18 y...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4016
更新日期:2015-12-15 00:00:00
abstract::Efforts to understand spinal cord injury (SCI) and other complex neurotrauma disorders at the pre-clinical level have shown progress in recent years. However, successful translation of basic research into clinical practice has been slow, partly because of the large, heterogeneous data sets involved. In this sense, tra...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3399
更新日期:2014-11-01 00:00:00
abstract::Sports-related concussion is a major public health problem in the United States and yet its biomechanical mechanisms remain unclear. In vitro studies demonstrate axonal elongation as a potential injury mechanism; however, current response-based injury predictors (e.g., maximum principal strain, ε(ep)) typically do not...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.3268
更新日期:2015-04-01 00:00:00
abstract::Traumatic injury is a common cause of coagulopathy, primarily due to blood loss and hemodilution secondary to fluid resuscitation. Traumatic injury-associated coagulopathy often follows a course of transition from hyper- to hypocoagulable state exemplified in disseminated intravascular coagulation. The incidence of co...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2012.2348
更新日期:2012-11-20 00:00:00