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Traumatic Brain Injuries

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https://www.readbyqxmd.com/read/29245000/does-traumatic-brain-injury-hold-the-key-to-the-alzheimer-s-puzzle
#1
Robert E Becker, Dimitrios Kapogiannis, Nigel H Greig
INTRODUCTION: Neurodegenerative disorders have been a graveyard for hundreds of well-intentioned efforts at drug discovery and development. Concussion and other traumatic brain injuries (TBIs) and Alzheimer's disease (AD) share many overlapping pathologies and possible clinical links. METHODS: We searched the literature since 1995 using MEDLINE and Google Scholar for the terms concussion, AD, and shared neuropathologies. We also studied a TBI animal model as a supplement to transgenic (Tg) mouse AD models for evaluating AD drug efficacy by preventing neuronal losses...
December 12, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29244999/mechanical-stress-increases-brain-amyloid-%C3%AE-tau-and-%C3%AE-synuclein-concentrations-in-wild-type-mice
#2
Marcel Levy Nogueira, Minoo Hamraz, Mohammad Abolhassani, Erwan Bigan, Olivier Lafitte, Jean-Marc Steyaert, Bruno Dubois, Laurent Schwartz
INTRODUCTION: Exposure to traumatic brain injury is a core risk factor that predisposes an individual to sporadic neurodegenerative diseases. We provide evidence that mechanical stress increases brain levels of hallmark proteins associated with neurodegeneration. METHODS: Wild-type mice were exposed to multiple regimens of repetitive mild traumatic brain injury, generating a range of combinations of impact energies, frequencies, and durations of exposure. Brain concentrations of amyloid β 1-42 (Aβ1-42), total tau, and α-synuclein were measured by sandwich enzyme-linked immunosorbent assay...
December 12, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29244842/intensive-care-treatments-associated-with-favorable-discharge-outcomes-in-argentine-children-with-severe-traumatic-brain-injury-for-the-south-american-guideline-adherence-group
#3
Monica S Vavilala, Silvia B Lujan, Qian Qiu, Michael J Bell, Nicolás M Ballarini, Nahuel Guadagnoli, María Alejandra Depetris, Gabriela A Faguaga, Gloria M Baggio, Leonardo O Busso, Mirta E García, Osvaldo R González Carrillo, Paula L Medici, Silvia S Sáenz, Elida E Vanella, Carly K Farr, Gustavo J Petroni
OBJECTIVE: Little is known about the critical care management of children with traumatic brain injury (TBI) in low middle income countries. We aimed to identify indicators of intensive care unit (ICU) treatments associated with favorable outcomes in Argentine children with severe TBI. METHODS: We conducted a secondary analysis of data from patients previously enrolled in a prospective seven center study of children with severe TBI who were admitted to an ICU in one of the seven study centers...
2017: PloS One
https://www.readbyqxmd.com/read/29244265/herpes-zoster-and-dementia-a-nationwide-population-based-cohort-study
#4
Vincent Chin-Hung Chen, Shu-I Wu, Kuo-You Huang, Yao-Hsu Yang, Ting-Yu Kuo, Hsin-Yi Liang, Kuan-Lun Huang, Michael Gossop
OBJECTIVE: Some infectious diseases have been found to be associated with cognitive impairment and dementia. However, the relationship between herpes zoster and dementia has received little attention. This study aimed to investigate this association as well as associations of antiviral treatments for herpes zoster and incident dementia using a large national sample. METHODS: Cases were identified from the Taiwan National Health Insurance Research Database with a new diagnosis of herpes zoster (ICD-9-CM code: 053) between 1997 and 2013...
December 12, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29244137/severe-traumatic-brain-injury
#5
David L Penn, John H Chi, Mark R Proctor
No abstract text is available yet for this article.
January 1, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29244062/longitudinal-course-and-predictors-of-apathetic-symptoms-after-severe-traumatic-brain-injury
#6
Annabelle Arnould, Lucien Rochat, Philippe Azouvi, Martial Van der Linden
Objectives: Apathy is one of the most common behavioral symptoms encountered after traumatic brain injury (TBI). However, very little is known about the longitudinal course and predictors of apathetic manifestations. The aims of the present study were to examine how apathy changes and the predictive value of cognitive factors (memory, attention/executive mechanisms, and multitasking) and personal identity factors (self-esteem and self-efficacy beliefs) for apathy over a period of 10 months...
December 13, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29241696/serious-concomitant-injuries-in-pediatric-patients-with-severe-traumatic-brain-injury
#7
Keita Shibahashi, Kazuhiro Sugiyama, Yoshihiro Okura, Hidenori Hoda, Yuichi Hamabe
BACKGROUND: Severe traumatic brain injury (TBI) is a leading cause of death among children. Although several studies have reported the negative effects of concomitant injuries on mortality in adults with TBI, their effect on pediatric patients remains unclear. Our objective was to describe the effect of serious concomitant injuries on outcomes, in pediatric patients with severe TBI. METHODS: We identified pediatric patients (<18 years) with severe TBI, between 2004 and 2015, through the Japan Trauma Data Bank...
December 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29241396/critical-thresholds-of-icp-derived-continuous-cerebrovascular-reactivity-indices-for-outcome-prediction-in-non-craniectomized-tbi-patients-prx-pax-and-rac
#8
Frederick Adam Zeiler, Joseph Donnelly, Peter Smieleweski, David Menon, Peter John Hutchinson, Marek Czosnyka
To compare ICP derived cerebrovascular reactivity indices in their ability to predict 6-month outcome, and to determine/compare critical thresholds related to outcome for each index, in adult non-craniectomized traumatic brain injury (TBI). Using a retrospective cohort of non-decompressive craniectomy (non-DC) TBI patients, we performed univariate and multivariate binary logistic regression outcome analysis of: pressure reactivity index (PRx), pulse amplitude index (PAx) and a newly described index calculated as the Regression coefficient between intracranial pressure (ICP) waveform Amplitude and Cerebral perfusion pressure RAC (CPP)...
December 14, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29239336/neural-progenitor-cells-but-not-astrocytes-respond-distally-to-thoracic-spinal-cord-injury-in-rat-models
#9
Tara Nguyen, Yilin Mao, Theresa Sutherland, Catherine Anne Gorrie
Traumatic spinal cord injury (SCI) is a detrimental condition that causes loss of sensory and motor function in an individual. Many complex secondary injury cascades occur after SCI and they offer great potential for therapeutic targeting. In this study, we investigated the response of endogenous neural progenitor cells, astrocytes, and microglia to a localized thoracic SCI throughout the neuroaxis. Twenty-five adult female Sprague-Dawley rats underwent mild-contusion thoracic SCI (n = 9), sham surgery (n = 8), or no surgery (n = 8)...
November 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29239321/should-we-have-a-guard-against-therapeutic-nihilism-for-patients-with-severe-traumatic-brain-injury
#10
Ryan Hirschi, Casey Rommel, Gregory W J Hawryluk
No abstract text is available yet for this article.
November 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29239310/micrornas-as-diagnostic-markers-and-therapeutic-targets-for-traumatic-brain-injury
#11
REVIEW
Bridget Martinez, Philip V Peplow
Traumatic brain injury (TBI) is characterized by primary damage to the brain from the external mechanical force and by subsequent secondary injury due to various molecular and pathophysiological responses that eventually lead to neuronal cell death. Secondary brain injury events may occur minutes, hours, or even days after the trauma, and provide valuable therapeutic targets to prevent further neuronal degeneration. At the present time, there is no effective treatment for TBI due, in part, to the widespread impact of numerous complex secondary biochemical and pathophysiological events occurring at different time points following the initial injury...
November 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29239280/perceived-injustice-and-its-correlates-after-mild-traumatic-brain-injury
#12
Grant L Iverson, Douglas P Terry, Justin E Karr, William Panenka, Noah D Silverberg
Perceived injustice is a belief that one has been treated unfairly, 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 traumatic brain injuries (MTBIs). We examined perceived injustice and its correlates in patients who were slow to recover from MTBI. Patients (N=102) were recruited from four concussion clinics. The sample was on average 41...
December 14, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29239267/a-retrospective-study-of-predictors-of-return-to-duty-vs-medical-retirement-in-an-active-duty-military-population-with-blast-related-mild-traumatic-brain-injury
#13
Philip A Cook, Thomas M Johnson, Suzanne G Martin, Philip R Gerhman, Seema Bhatnagar, James C Gee
Traumatic Brain Injury (TBI), has been described as the "signature injury" of the Global War on Terror. Explosive blast TBI has become a leading cause of injury as a result of the widespread use of improvised explosive devices in Iraq and Afghanistan. We present a retrospective cross-sectional study of patients with blast-related mild TBI (N=303) seen at the Intrepid Spirit Concussion Recovery Center at Naval Medical Center Camp Lejeune. The objective was to predict outcomes of return to duty (RTD) vs. medical retirement via medical evaluation board (MEB), based on brain imaging, neuropsychological data and history of mTBI...
December 14, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29239261/white-matter-tract-integrity-an-indicator-of-axonal-pathology-after-mild-traumatic-brain-injury
#14
Sohae Chung, Els Fieremans, Xiuyuan Wang, Nuri E Kucukboyaci, Charles J Morton, James S Babb, Prin Amorapanth, Farng-Yang Foo, Dmitry S Novikov, Steven R Flanagan, Joseph F Rath, Yvonne W Lui
We seek to elucidate the underlying pathophysiology of injury sustained after mild traumatic brain injury (MTBI) using multi-shell diffusion MRI, deriving compartment-specific WM tract integrity (WMTI) metrics. WMTI allows a more biophysical interpretation of WM changes by describing microstructural characteristics in both intra- and extra-axonal environments. Thirty-two patients with MTBI within 30 days of injury and twenty-one age- and sex-matched controls were imaged on a 3T MR scanner. Multi-shell diffusion acquisition was performed with 5 b-values (250 - 2500 s/mm<sup>2</sup>) along 6 - 60 diffusion encoding directions...
December 14, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29238610/a-role-for-erbb-signaling-in-the-induction-of-reactive-astrogliosis
#15
Jing Chen, Wanwan He, Xu Hu, Yuwen Shen, Junyan Cao, Zhengdong Wei, Yifei Luan, Li He, Fangdun Jiang, Yanmei Tao
Reactive astrogliosis is a hallmark of many neurological disorders, yet its functions and molecular mechanisms remain elusive. Particularly, the upstream signaling that regulates pathological responses of astrocytes is largely undetermined. We used a mouse traumatic brain injury model to induce astrogliosis and revealed activation of ErbB receptors in reactive astrocytes. Moreover, cell-autonomous inhibition of ErbB receptor activity in reactive astrocytes by a genetic approach suppressed hypertrophic remodeling possibly through the regulation of actin dynamics...
2017: Cell Discovery
https://www.readbyqxmd.com/read/29238428/does-red-cell-distribution-width-predict-outcome-in-traumatic-brain-injury-comparison-to-corticosteroid-randomization-after-significant-head-injury
#16
Farid Sadaka, Nicholas Doctors, Tallia Pearson, Brian Snyders, Jacklyn O'Brien
Background: Traumatic brain injury (TBI) is a leading cause of death and disability. The role of red cell distribution width (RDW) as a prognostic biomarker for outcome in TBI patients is unknown. Based on the corticosteroid randomization after significant head injury (CRASH) trial database, a prognosis calculator (CRASH) has been developed for outcome prediction in TBI. The objectives of this study are to investigate the association between RDW on day 1 of TBI and outcome, and to compare outcome prediction from RDW to that from CRASH...
January 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29236167/evaluation-of-the-yield-of-24-h-close-observation-in-patients-with-mild-traumatic-brain-injury-on-anticoagulation-therapy-a-retrospective-multicenter-study-and-meta-analysis
#17
Merelijne A Verschoof, Charlotte C M Zuurbier, Frank de Beer, Jonathan M Coutinho, Evert A Eggink, Björn M van Geel
BACKGROUND/AIMS: Patients with mild traumatic brain injury (mTBI) on anticoagulants have an increased risk of intracranial hemorrhage (ICH). However, consensus is lacking on whether to admit them after normal initial cranial CT. We evaluated the yield of 24-h neurological observation. METHODS: Retrospective multicenter study including adult patients admitted over a 5-year period with mTBI on anticoagulation [therapeutic dose heparin, direct oral anticoagulant, or vitamin K antagonist (VKA) with international normalized ratio (INR) ≥ 1...
December 13, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29235509/in-vivo-metabolic-imaging-of-traumatic-brain-injury
#18
Caroline Guglielmetti, Austin Chou, Karen Krukowski, Chloe Najac, Xi Feng, Lara-Kirstie Riparip, Susanna Rosi, Myriam M Chaumeil
Complex alterations in cerebral energetic metabolism arise after traumatic brain injury (TBI). To date, methods allowing for metabolic evaluation are highly invasive, limiting our understanding of metabolic impairments associated with TBI pathogenesis. We investigated whether 13C MRSI of hyperpolarized (HP) [1-13C] pyruvate, a non-invasive metabolic imaging method, could detect metabolic changes in controlled cortical injury (CCI) mice (n = 57). Our results show that HP [1-13C] lactate-to-pyruvate ratios were increased in the injured cortex at acute (12/24 hours) and sub-acute (7 days) time points after injury, in line with decreased pyruvate dehydrogenase (PDH) activity, suggesting impairment of the oxidative phosphorylation pathway...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29234973/decompressive-craniectomy-in-traumatic-brain-injury-usage-and-clinical-outcome-in-a-single-centre
#19
Teodor Svedung Wettervik, Samuel Lenell, Lena Nyholm, Tim Howells, Anders Lewén, Per Enblad
BACKGROUND: Two randomised controlled trials (RCTs) of decompressive craniectomy (DC) in traumatic brain injury (TBI) have shown poor outcome, but there are considerations of how these protocols relate to real practice. The aims of this study were to evaluate usage and outcome of DC and thiopental in a single centre. METHOD: The study included all TBI patients treated at the neurointensive care unit, Akademiska sjukhuset, Uppsala, Sweden, between 2008 and 2014. Of 609 patients aged 16 years or older, 35 treated with DC and 23 treated with thiopental only were studied in particular...
December 12, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29234838/clinical-characteristics-and-prognosis-of-traumatic-head-injury-following-road-traffic-accidents-admitted-in-icu-analysis-of-694-cases
#20
Hedi Chelly, Mabrouk Bahloul, Rania Ammar, Ahmed Dhouib, Khaireddine Ben Mahfoudh, Mohamed Zaher Boudawara, Olfa Chakroun, Imen Chabchoub, Anis Chaari, Mounir Bouaziz
BACKGROUND: The aim of the present study is to analyze the clinical and epidemiological characteristics of Traumatic Brain Injury (TBI) following Road Traffic Accidents (RTAs). Moreover, we aim to evaluate the outcome of the TBI victims referred to our medico-surgical Intensive Care Unit (ICU), and to define predictive factors associated with poor prognosis. METHODS: A retrospective study over a 4-year period (2009 to 2012) of 694 patients with head injuries, incurred during road traffic accidents, admitted to the Intensive Care Unit (ICU) of a university hospital (Sfax-Tunisia)...
December 12, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
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