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 the current study, we examined the effects of either a severe or a milder bilateral frontal controlled cortical impact injury on impulsivity using the Delay Discounting Task (DDT), in which preference for smaller-sooner over larger-later rewards is indicative of greater impulsive choice. Both milder and severe TBI caused a significant, chronic increase in impulsive decision making. Despite these pronounced changes in performance of the DDT, memory function, as assessed by the Morris Water Maze, was not impaired in more mildly injured rats and only transiently impacted in the severe TBI group. Whereas a significant lesion was only evident in severely injured rats, analysis of cytokine levels within the frontal cortex revealed a selective increase in interleukin (IL)-12 that was associated with the magnitude of the change in impulsive choice caused by both milder and severe TBI. These findings suggest that tissue loss alone cannot explain the increased impulsivity observed, and that inflammatory pathways mediated by IL-12 may be a contributing factor. The findings from this study highlight the sensitivity of sophisticated behavioral measures designed to assess neuropsychiatric dysfunction in the detection of TBI-induced cognitive impairments and their utility in identifying potential mechanistic pathways and therapeutic targets.
journal_name
J Neurotraumajournal_title
Journal of neurotraumaauthors
Vonder Haar C,Martens KM,Riparip LK,Rosi S,Wellington CL,Winstanley CAdoi
10.1089/neu.2016.4813subject
Has Abstractpub_date
2017-10-01 00:00:00pages
2790-2800issue
19eissn
0897-7151issn
1557-9042journal_volume
34pub_type
杂志文章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
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abstract::In human diffuse axonal injury (DAI), axons are exposed to transient tensile strain. Over the ensuing several hours, injured axons enter a "pathological cascade" of events that lead to secondary axotomy. Use of animal models of traumatic axonal injury (TAI) has allowed description of a number of pathological changes b...
journal_title:Journal of neurotrauma
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abstract::Traumatic brain injury (TBI) evokes diffuse (traumatic) axonal injury (TAI), which contributes to morbidity and mortality. Damaged axons display progressive alterations gradually evolving to axonal disconnection. In severe TAI, the tensile forces of injury lead to a focal influx of Ca2+, initiating a series of proteol...
journal_title:Journal of neurotrauma
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abstract::Spinal cord injury damaging the rubrospinal tract (RST) interferes with skilled forelimb movement, but identification of the precise role of the RST in this behavior is impeded by the difficulty of surgically isolating the RST from other pathways running within the lateral funiculus (LF). The present study used a skil...
journal_title:Journal of neurotrauma
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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
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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...
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abstract::Carbon dioxide is perhaps the most potent available modulator of cerebrovascular tone and thus cerebral blood flow (CBF). These experiments evaluate the impact of induced hypercarbia on the matching of blood flow and metabolism in the injured brain. We explore the hypothesis that hypercarbia will restore the relations...
journal_title:Journal of neurotrauma
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doi:10.1089/089771501750055776
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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
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更新日期:1991-04-01 00:00:00
abstract::Delirium is a commonly reported acute care adverse event in patients with traumatic spinal cord injury (TSCI), but studies specifically investigating it in this population are lacking. The purpose of this study was to characterize the onset, risk factors, and impact of delirium in patients with TSCI. Patients discharg...
journal_title:Journal of neurotrauma
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abstract::To assess the safety and accuracy of the Camino intraparenchymal sensor, we prospectively evaluated hemorrhagic complications, zero-drift, infection, and system malfunction in 163 patients monitored after a severe head injury. Mean duration of intracranial pressure (ICP) monitoring was 5 +/- 2.2 days (range: 12 h to 1...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
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abstract::To test if observed vs. expected mortality differs by age among traumatic brain injury (TBI) cases, a population-based, historical cohort study was conducted in Olmsted County, Minnesota. From all residents with any diagnosis suggestive of TBI 1985-1999, we randomly sampled 7,800 and reviewed their medical records to ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
doi:10.1089/neu.2006.0119
更新日期:2007-03-01 00:00:00
abstract::Mild traumatic brain injury (mTBI) accounts for the vast majority of all pediatric TBI. An important minority of children who have suffered an mTBI have enduring cognitive and emotional symptoms. However, the mechanisms of chronic symptoms in children with pediatric mTBI are not fully understood. This is in part due t...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
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abstract::The expression of alternatively spliced mRNAs for amyloid precursor protein (APP) isoforms and their translation products were examined in the rat cerebral cortex 1, 3, 6, and 12 h and 1, 3, and 7 days (n = 4-5 in each group) after fluid-percussion brain injury. In situ hybridization studies demonstrated that the expr...
journal_title:Journal of neurotrauma
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更新日期:2000-02-01 00:00:00
abstract::Pairing vagus nerve stimulation (VNS) with rehabilitation has emerged as a potential strategy to enhance plasticity and improve recovery in a range of neurological disorders. A recent study highlights the therapeutic promise of VNS in promoting motor recovery after spinal cord injury (SCI). We investigated the safety ...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
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更新日期:2020-05-01 00:00:00
abstract::Persistent pain is experienced by more than 50% of persons who sustain a traumatic brain injury (TBI), and more than 30% experience significant pain as early as 6 weeks after injury. Although neuropathic pain is a common consequence after CNS injuries, little attention has been given to neuropathic pain symptoms after...
journal_title:Journal of neurotrauma
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更新日期:2016-07-15 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
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abstract::This study was designed to investigate the additional benefits of a multimodal early onset stimulation (MEOS) paradigm when combined with enriched environment (EE) versus EE only and standard housing (SH) on the recovery after experimental traumatic brain injury (TBI). Male Sprague- Dawley rats were subjected to moder...
journal_title:Journal of neurotrauma
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journal_title:Journal of neurotrauma
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更新日期:1994-12-01 00:00:00
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journal_title:Journal of neurotrauma
pub_type: 杂志文章
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abstract::Outcomes can be challenging to predict in children with mild traumatic brain injury (TBI). Transcranial Doppler (TCD) ultrasound has become an increasingly useful modality in adult and pediatric TBI by measuring blood flow velocities within the circle of Willis. In children with moderate-to-severe TBI, multiple studie...
journal_title:Journal of neurotrauma
pub_type: 杂志文章
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abstract::Noise exposure is known to induce cell death signaling in the cochlea. Since c-Jun N-terminal kinase (JNK) signaling is known to induce both cell survival and apoptosis, the present study focused on early changes (within 24 h) after impulse noise exposure, inquiring whether cell death is always related to phosphorylat...
journal_title:Journal of neurotrauma
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journal_title:Journal of neurotrauma
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abstract::The potential pathophysiological role of circulating microparticles (MPs) has been recognized in various conditions, such as cardiovascular and thrombotic diseases. Traumatic brain injury (TBI) has a complex pathophysiology that involves coagulopathy and inflammation. We investigated endothelial-, platelet-, and leuko...
journal_title:Journal of neurotrauma
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abstract::Spinal cord injury caused by stab wounds (SCISW) results from a partial or complete transection of the cord, and presents opportunities for interventional research. It is recognized that there is low incidence, but little is known about the natural history or the patient's suitability for long-term clinical outcome st...
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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...
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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
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