Abstract:
:A significant outflow of neurotransmitters and metabolites with associated enhanced cortical excitation occurs after concussive head trauma. Cellular changes in the acute post-injury period cannot be observed directly in humans, and as such, require indirect evidence from systems sufficiently sensitive to central neuronal cellular excitation. Dopamine is a neurotransmitter with numerous targets in the central and peripheral nervous system. Changes to central dopaminergic tone result in reciprocal responses to the level of serum prolactin (PRL). Thus, a concussion may lead to abnormal dopaminergic tone, resulting in dynamic perturbations in the serum PRL concentration. To determine the effect of concussion on serum PRL concentrations, venipuncture was performed in the morning in four male intercollegiate athletes (age, 20 ± 1 years; height, 71 ± 5 inches; weight, 174 ± 21 pounds) within 48 h of concussion and again at 7 and 14 days post-injury. Serum PRL concentrations for each visit were categorized by quartile within the normal range. In all athletes, serum PRL concentrations increased from the lower quartiles in samples obtained closer to the time of injury to the higher quartiles at 14 days post-injury. These serum PRL changes accompanied the resolution of symptoms and the clinical decision to permit return-to-play. It may be postulated that transient augmentation of central dopaminergic tone resulted in inhibition of PRL secretion early after concussion and that disinhibition of PRL release occurred when central dopaminergic tone subsequently returned to baseline levels. This novel observation provides evidence for dopaminergic dysfunction after concussion that may be tracked by determination of serum PRL levels.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
La Fountaine MF,Toda M,Testa A,Bauman WAdoi
10.1089/neu.2015.3968subject
Has Abstractpub_date
2016-05-01 00:00:00pages
904-6issue
9eissn
0897-7151issn
1557-9042journal_volume
33pub_type
杂志文章abstract::The family of the collapsin response mediator proteins (CRMPs) plays a significant physiological role in neuronal cell bodies and axons within the integrated mammalian central nervous system (CNS). Trauma-induced damage to the CNS results in variable degrees of axonal degeneration, and this may lead to neuronal cell d...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2011.2063
更新日期:2012-06-10 00:00:00
abstract::Progesterone is an anti-inflammatory and promyelinating agent after spinal cord injury, but its effectiveness on functional recovery is still controversial. In the current study, we tested the effects of chronic progesterone administration on tissue preservation and functional recovery in a clinically relevant model o...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.3162
更新日期:2014-05-01 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::Traumatic brain injury (TBI) is a health threat that affects every year millions of people involved in motor vehicle and sporting accidents, and thousands of soldiers in battlefields. Diffuse axonal injury (DAI) is one of the most frequent types of TBI leading to death. In DAI, the initial traumatic event is followed ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4007
更新日期:2016-05-01 00:00:00
abstract::Traumatic brain injury (TBI) often occurs in conjunction with additional trauma, resulting in secondary complications, such as hypotension as a result of blood loss. This study investigated the combined effects of penetrating ballistic-like brain injury (PBBI) and hemorrhagic shock (HS) on physiological parameters, in...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2012.2715
更新日期:2013-07-15 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::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::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::In 1990, the Second National Acute Spinal Cord Injury Study reported that high-dosage methylprednisolone improves neurologic recovery in spinal-injured humans. The study showed that patients who received the drug within 8 hr after injury improved, whereas those who received the drug later did not. The drug significant...
journal_title:Journal of neurotrauma
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1992-03-01 00:00:00
abstract::Non-human primate (NHP) models of spinal cord injury better reflect human injury and provide a better foundation to evaluate potential treatments and functional outcomes. We combined finite element (FE) and surrogate models with impact data derived from in vivo experiments to define the impact mechanics needed to gene...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.3974
更新日期:2016-06-15 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章,多中心研究
doi:10.1089/neu.2011.2044
更新日期:2012-01-01 00:00:00
abstract::Adolescents are one of the highest groups at risk for sustaining both traumatic brain injury (TBI) and repeat TBI (RTBI). Consequences of endocrine dysfunction following TBI have been routinely explored in adults, but studies in adolescents are limited, and show an incidence rate of endocrine dysfunction in 16-61% in ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2013.2990
更新日期:2013-12-01 00:00:00
abstract::Surviving motoneurons undergo dendritic atrophy after spinal cord injury (SCI), suggesting an important therapeutic target for neuroprotective strategies to improve recovery of function after SCI. Our previous studies showed that phospholipase A2 (PLA2) may play an important role in the pathogenesis of SCI. In the pre...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3690
更新日期:2014-11-11 00:00:00
abstract::An impaired ability to regulate microglia activation by fractalkine (CX3CL1) leads to microglia chronic sub-activation. How this condition affects outcome after acute brain injury is still debated, with studies showing contrasting results depending on the timing and the brain pathology. Here, we investigated the early...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2015.4041
更新日期:2016-06-01 00:00:00
abstract::Traumatic brain injury (TBI) alters function and behavior, which can be characterized by changes in electrophysiological function in vitro. A common cognitive deficit after mild-to-moderate TBI is disruption of persistent working memory, of which the in vitro correlate is long-lasting, neuronal network synchronization...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3667
更新日期:2015-07-01 00:00:00
abstract::Return to living at home is an important patient-reported outcome following traumatic spinal cord injury (tSCI). Specialized inpatient rehabilitation assists such patients in maximizing function and independence. Our project aim was to describe those patients receiving specialized rehabilitation after tSCI in Canada, ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4930
更新日期:2017-10-15 00:00:00
abstract::Magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) studies have demonstrated that measures of altered metabolism and axonal injury can be detected following traumatic brain injury. The aim of this study was to characterize and compare the distributions of altered image parameters obtained by thes...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3505
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::Collaboration among investigators, centers, countries, and disciplines is essential to advancing the care for traumatic brain injury (TBI). It is thus important that we "speak the same language." Great variability, however, exists in data collection and coding of variables in TBI studies, confounding comparisons betwe...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2010.1617
更新日期:2011-02-01 00:00:00
abstract::Athletes in contact sports sustain repetitive subconcussive head impacts in a brief window, yet neurophysiological sequelae from repetitive subconcussion remain unclear. This prospective longitudinal study examined a relationship between changes in plasma Tau protein levels and subconcussive impact kinematic data in 2...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2017.5376
更新日期:2018-01-15 00:00:00
abstract::Gangliosides play important roles in the physiologic operations of the nervous system, in particular that of the brain. Changes in ganglioside composition occur in the mammalian brain not only during development, but also in aging and in several neuropathologic situations. Gangliosides may modulate the ability of the ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章,评审
doi:
更新日期:1992-05-01 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章,meta分析,评审
doi:10.1089/neu.2014.3520
更新日期:2015-03-15 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2010.1501
更新日期:2010-12-01 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1994.11.255
更新日期:1994-06-01 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.1997.14.715
更新日期:1997-10-01 00:00:00
abstract::Traumatic brain injury (TBI) is associated with the development of numerous psychiatric diseases. Of particular concern for TBI patients is the impact of chronic impulsivity on daily functioning. Despite the scope of the human problem, little has been done to address impulsivity in animal models of brain injury. In th...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2016.4813
更新日期:2017-10-01 00:00:00
abstract::Neuroprotection, recovery of function, and gene expression were evaluated in an animal model of traumatic brain injury (TBI) after a combination treatment of nicotinamide (NAM) and progesterone (Prog). Animals received a cortical contusion injury over the sensorimotor cortex, and were treated with either Vehicle, NAM,...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2014.3530
更新日期:2015-06-01 00:00:00
abstract::Cardiometabolic risk factors are sorely underreported after spinal cord injury (SCI), despite the high prevalence of metabolic disorders and cardiovascular mortality in this population. Body-composition analysis and serum-lipid profiling are two assessments that are beginning to be more widely used to document metabol...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2009.1064
更新日期:2010-01-01 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2005.22.544
更新日期:2005-05-01 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