Abstract:
:In various animal and human studies, early administration of 17β-estradiol, a strong antioxidant, anti-inflammatory, and anti-apoptotic agent, significantly decreases the severity of injury in the brain associated with cell death. Estrone, the predominant estrogen in postmenopausal women, has been shown to be a promising neuroprotective agent. The overall goal of this project was to determine if estrone mitigates secondary injury following traumatic brain injury (TBI) in rats. Male rats were given either placebo (corn oil) or estrone (0.5 mg/kg) at 30 min after severe TBI. Using a controlled cortical impact device in rats that underwent a craniotomy, the right parietal cortex was injured using the impactor tip. Non-injured control and sham animals were also included. At 72 h following injury, the animals were perfused intracardially with 0.9% saline followed by 10% phosphate-buffered formalin. The whole brain was removed, sliced, and stained for TUNEL-positive cells. Estrone decreased cortical lesion volume (p<0.01) and neuronal injury (p<0.001), and it reduced cerebral cortical levels of TUNEL-positive staining (p<0.0001), and decreased numbers of TUNEL-positive cells in the corpus callosum (p<0.03). We assessed the levels of β-amyloid in the injured animals and found that estrone significantly decreased the cortical levels of β-amyloid after brain injury. Cortical levels of phospho-ERK1/2 were significantly (p<0.01) increased by estrone. This increase was associated with an increase in phospho-CREB levels (p<0.021), and brain-derived neurotrophic factor (BDNF) expression (p<0.0006). In conclusion, estrone given acutely after injury increases the signaling of protective pathways such as the ERK1/2 and BDNF pathways, decreases ischemic secondary injury, and decreases apoptotic-mediated cell death. These results suggest that estrone may afford protection to those suffering from TBI.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
Gatson JW,Liu MM,Abdelfattah K,Wigginton JG,Smith S,Wolf S,Simpkins JW,Minei JPdoi
10.1089/neu.2011.2274subject
Has Abstractpub_date
2012-08-10 00:00:00pages
2209-19issue
12eissn
0897-7151issn
1557-9042journal_volume
29pub_type
杂志文章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::Acute subdural hematoma (ASDH) is associated with high morbidity and mortality. Whether the volume effect of the hematoma and increase of intracranial pressure (ICP) or the local effect of blood are responsible for this severe pathophysiology is unclear. Therefore, we compared subdural infusion of autologous blood and...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4464
更新日期:2017-02-15 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 objective of this study was to determine whether clinically significant ocular trauma can be induced by a survivable isolated primary blast using a live animal model. Both eyes of 18 Dutch Belted rabbits were exposed to various survivable low-level blast overpressures in a large-scale shock tube simulating a prima...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4022
更新日期:2016-07-01 00:00:00
abstract::The development of anxiety disorders after a traumatic brain injury (TBI) is a strong predictor of social, personal, and work dysfunction; nevertheless, the emergence of anxiety has been largely unexplored and poorly understood in the context of TBI. This article provides an overview of the limited published research ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2014.3504
更新日期:2015-04-01 00:00:00
abstract::Worldwide, different strategies are being applied for symptomatic chronic subdural hematoma (CSDH). The aim of this study was to evaluate the efficacy of two treatment strategies for symptomatic CSDH: initial dexamethasone (DXM) therapy versus primary surgery by burr hole craniostomy (BHC). We retrospectively collecte...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2019.6541
更新日期:2020-01-15 00:00:00
abstract::Transient receptor potential vanilloid 1 (TRPV1) is expressed widely in the central nervous system and is activated by various stimuli. Inhibiting TRPV1 has neuroprotective effects in cerebral ischemia. The role of inhibiting TRPV1 to maintain blood-brain barrier (BBB) integrity after traumatic brain injury (TBI) rema...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.5942
更新日期:2019-04-15 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::Early decompression may improve neurological outcome after spinal cord injury (SCI), but is often difficult to achieve because of logistical issues. The aims of this study were to 1) determine the time to decompression in cases of isolated cervical SCI in Australia and New Zealand and 2) determine where substantial de...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4207
更新日期:2016-06-15 00:00:00
abstract::The aim of this systematic review was to critically evaluate the evidence on interventions for depression following traumatic brain injury (TBI) and provide recommendations for clinical practice and future research. We reviewed pharmacological, other biological, psychotherapeutic, and rehabilitation interventions for ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2009.1091
更新日期:2009-12-01 00:00:00
abstract::Spinal cord injury (SCI) results in marked atrophy and dysfunction of skeletal muscle. There are currently no effective treatments for SCI-induced muscle atrophy or the dysfunction of the remaining muscle tissue. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-4 (Nox4) produces reactive oxygen species (ROS...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4763
更新日期:2017-06-15 00:00:00
abstract::The current lack of diagnostic and prognostic biomarkers for traumatic brain injury (TBI) confounds treatment and management of patients and is of increasing concern as the TBI population grows. We have generated plasma proteomic profiles from mice receiving TBI by controlled cortical impact at either 1.3 mm or 1.8 mm...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.1789
更新日期:2012-01-20 00:00:00
abstract::There is a need for better tools to objectively, reliably, and precisely assess neurological function after sport-related concussion (SRC). The aim of this study was to use a robotic device (Kinesiological Instrument for Normal and Altered Reaching Movements; KINARM) to quantify neurological impairments in athletes ac...
journal_title:Journal of neurotrauma
pub_type: 临床试验,杂志文章
doi:10.1089/neu.2017.5587
更新日期:2019-01-15 00:00:00
abstract::Studies have shown reduced life expectancy following moderate-severe traumatic brain injury (TBI) with death from unintentional poisoning (UP) being 11 times higher following TBI than in the general population. The characteristics of those who die of unintentional poisoning are compared with the characteristics of tho...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2020.7038
更新日期:2020-12-01 00:00:00
abstract::Adequate nutritional support is a major challenge in brain injury patients, because malnutrition cannot be reversed by standard enteral nutrition. We hypothesized that an oligomeric formula could improve nutritional status by restoring intestinal trophicity. Eighteen male Sprague-Dawley rats (300-330 g) underwent gast...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2707
更新日期:2013-06-01 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::Hippocampal-dependent deficits in learning and memory formation are a prominent feature of traumatic brain injury (TBI); however, the role of the hippocampus in cognitive dysfunction after concussion (mild TBI) is unknown. We therefore investigated functional and structural changes in the swine hippocampus following T...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4848
更新日期:2017-07-15 00:00:00
abstract::Following a controlled, severe contusion lesion to the lower thoracic spinal cord in adult rats, we found that apoptosis occurred in cells located in both gray and white matter. This suggested that both nonneuronal cells, including astrocytes, oligodendroglia and microglia, as well as neurons, might participate in pro...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1998.15.459
更新日期:1998-07-01 00:00:00
abstract::Closed head injury often has a devastating outcome, partly because the insult, like other injuries to the central nervous system (CNS), triggers self-destructive processes. During studies of the response to other CNS insults, it was unexpectedly discovered that the immune system, if well controlled, provides protectio...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/089771503767168483
更新日期:2003-06-01 00:00:00
abstract::Neuroendocrine disturbances are common after traumatic brain injury (TBI) and aneurysmal subarachnoid hemorrhage (SAH), but only a few data exist on long-term anterior pituitary deficiencies after brain injury. We present data from the Structured Data Assessment of Hypopituitarism after TBI and SAH, a multi-center stu...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究
doi:10.1089/neu.2015.4109
更新日期:2016-08-15 00:00:00
abstract::Neuroimaging plays an important role in assessing axonal pathology after traumatic spinal cord injury. However, coexisting inflammation confounds imaging assessment of the severity of axonal injury. Herein, we applied diffusion basis spectrum imaging (DBSI) to quantitatively differentiate and quantify underlying patho...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2018.6016
更新日期:2019-08-01 00:00:00
abstract::It has been demonstrated that ethanol exerts dose-dependent effects, both beneficial and detrimental, on the outcome of traumatic brain injury (TBI). Recently, it has been reported that co-administration of caffeine (10 mg/kg) and a low amount of alcohol (0.65 g/kg; caffeinol) reduces cortical infarct volume up to 80%...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2004.21.1573
更新日期:2004-11-01 00:00:00
abstract::Traumatic brain injury (TBI) can trigger disturbances of cerebral pressure autoregulation that can translate into the generation of secondary insults and increased morbidity/mortality. Few therapies have been developed to attenuate the damaging consequences of disturbed autoregulatory control, although some suggest th...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.2278
更新日期:2012-05-01 00:00:00
abstract::Spinal cord injury can have a range of debilitating effects, permanently impacting a patient's quality of life. Initially thought to be an immune privileged site, the spinal cord is able to mount a timely and well organized inflammatory response to injury. Intricate immune cell interactions are triggered, typically co...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:10.1089/neu.2014.3429
更新日期:2014-11-01 00:00:00
abstract::Glial fibrillary acidic protein (GFAP), ubiquitin carboxyl-terminal hydrolase-L1 (UCH-L1), and S100B have been shown to be predictive of patients with brain injury. Kinetics of these biomarkers in injured humans have not been extensively examined. This prospective multi-center study included patients with mild-to-mode...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究
doi:10.1089/neu.2016.4772
更新日期:2017-06-01 00:00:00
abstract::Prognostic models that were developed by the International Mission on Prognosis and Analysis of Clinical Trials in Traumatic Brain Injury (IMPACT) study group and the Corticosteroid Randomization After Signification Head injury (CRASH) collaborators are the most commonly used prognostic models for outcome after trauma...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4182
更新日期:2016-09-01 00:00:00
abstract::We investigated the activation of lower limb motor pools by supraspinal and spinal networks after human spinal cord injury (SCI). We compared electromyographic (EMG) activity from six muscles during voluntarily attempted non-weight-bearing single-joint movements, multijoint movements approximating stepping in a supine...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/08977150260338010
更新日期:2002-10-01 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::With a rising number of cranioplasty (CP) procedures and an increasing percentage of patients with a good clinical outcome and prolonged survival after CP, looking at the functional and aesthetic outcome of these patients becomes more and more important. The aim of our study was to evaluate a novel score, combining fu...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5512
更新日期:2018-04-15 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