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Concussions, traumatic brain injuries, head injuries

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https://www.readbyqxmd.com/read/29035978/use-of-blood-biomarkers-in-the-assessment-of-sports-related-concussion-a-systematic-review-in-the-context-of-their-biological-significance
#1
Brendan OʼConnell, Áine M Kelly, David Mockler, Matej Orešič, Karl Denvir, Garreth Farrell, Damir Janigro, Fiona Wilson
OBJECTIVES: To critically review current knowledge on the positive and negative predictive value of blood biomarkers for concussion; to illustrate the clinical and biological contexts that help evaluate the use of these markers in sport-related traumatic brain injuries (TBIs). METHODS: This systematic review was performed in accordance with PRISMA guidelines. We reviewed the measurement, clinical utility, endpoint, and biological significance of blood biomarkers in concussion...
October 12, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29030453/gaba-alterations-in-pediatric-sport-concussion
#2
Seth D Friedman, Andrew V Poliakov, Christopher Budech, Dennis W W Shaw, David Breiger, Thomas Jinguji, Brian Krabak, David Coppel, Tressa Mattioli Lewis, Samuel Browd, Jeffrey G Ojemann
OBJECTIVE: To evaluate whether frontal-lobe magnetic resonance spectroscopy measures of γ-aminobutyric acid (GABA) would be altered in a sample of adolescents scanned after sport concussion because mild traumatic brain injury is often associated with working memory problems. METHODS: Eleven adolescents (age 14-17 years) who had sustained a first-time sport concussion were studied with MRI/magnetic resonance spectroscopy within 23 to 44 days after injury (mean 30...
October 13, 2017: Neurology
https://www.readbyqxmd.com/read/29025849/the-association-between-adverse-childhood-experiences-and-traumatic-brain-injury-concussion-in-adulthood-a-scoping-review-protocol
#3
Zechen Ma, Mark T Bayley, Laure Perrier, Priya Dhir, Lana Dépatie, Paul Comper, Lesley Ruttan, Sarah Ep Munce
INTRODUCTION: Exposure to adverse childhood experiences (ACEs) is a significant risk factor for physical and mental illnesses later in life. Concussion or traumatic brain injury is a challenging condition where preinjury factors may interact to affect recovery. The association between ACEs and traumatic brain injury/concussion is not well mapped in any previous reviews of the literature. Using a scoping review methodology, the research question that will be addressed is: what is known from the existing literature about the association between ACEs and traumatic brain injury/concussion in adults? METHODS AND ANALYSIS: The methodological frameworks outlined by Arksey and O'Malley and Levac et al will be used...
October 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28954796/comparison-of-amateur-boxing-before-and-after-the-2013-rules-change-and-the-impact-on-boxers-safety
#4
Philip Davis, Robert Waldock, Andrew Connorton, Sonny Driver, Sean Anderson
OBJECTIVES: The effect of the rules change in 2013 on amateur boxing strategy, technique and safety in comparison with pre-2013 is unknown. METHODS: Pre-2013 and post-2013 3×3 min elite level amateur boxing was compared from video footage of 29 Olympic (pre-2013) and 50 World Championship bouts (post-2013) totalling 99 male boxers (mean±SD) age: 24.3±3.2 years, height: 177.3±11.3 cm and body mass: 70.7±16.4 kg. RESULT: Many techniques that were dominant pre-2013 were used less post-2013, including: total punches thrown, rear hand punches, hook rear hand, punches landed, uppercut punches, total punches to the body (all <0...
September 27, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28919268/depression-and-sports-related-concussion-a-systematic-review
#5
Antoine Yrondi, David Brauge, Johanne LeMen, Christophe Arbus, Jérémie Pariente
CONTEXT: Head injuries are risk factors for chronic depressive disorders, but this association remains poorly explored with regards to concussion. OBJECTIVES: The objective of this review was to evaluate the incidence of depressive symptoms and depression after sports-related concussion. We also endeavored to identify the response elements regarding the pathophysiology of these symptoms. METHODS: A systematic search of PubMed and Embase was conducted focusing on papers published until 1st December, 2016, according to PRISMA criteria The following MESH terms were used: (concussion or traumatic brain injury) and sport and (depression or depressive disorder)...
September 14, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28894296/test-retest-reliability-of-high-spatial-resolution-diffusion-tensor-and-diffusion-kurtosis-imaging
#6
Pashtun Shahim, Laurena Holleran, Joong H Kim, David L Brody
We assessed the test-retest reliability of high spatial resolution diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI). Diffusion MRI was acquired using a Siemens 3 Tesla Prisma scanner with 80 mT/m gradients and a 32-channel head coil from each of 3 concussive traumatic brain injury (cTBI) patients and 4 controls twice 0 to 24 days apart. Coefficients of variation (CoV) for DTI parameters were calculated in each DTI Studio parcellated white matter tract at 1.25 mm and 1.75 mm isotropic voxel resolution, as well as DKI parameters at 1...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878731/head-eye-vestibular-motion-therapy-affects-the-mental-and-physical-health-of-severe-chronic-postconcussion-patients
#7
Frederick Robert Carrick, Joseph F Clark, Guido Pagnacco, Matthew M Antonucci, Ahmed Hankir, Rashid Zaman, Elena Oggero
CONTEXT: Approximately 1.8-3.6 million annual traumatic brain injuries occur in the United States. An evidence-based treatment for concussions that is reliable and effective has not been available. OBJECTIVE: The objective of this study is to test whether head-eye vestibular motion (HEVM) therapy is associated with decreased symptoms and increased function in postconcussive syndrome (PCS) patients that have been severely impaired for greater than 6 months after a mild traumatic brain injury...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28856586/tio2-nanowired-delivery-of-dl-3-n-butylphthalide-dl-nbp-attenuates-blood-brain-barrier-disruption-brain-edema-formation-and-neuronal-damages-following-concussive-head-injury
#8
Lianyuan Feng, Aruna Sharma, Feng Niu, Yin Huang, José Vicente Lafuente, Dafin Fior Muresanu, Asya Ozkizilcik, Z Ryan Tian, Hari Shanker Sharma
DL-3-n-butylphthalide (DL-NBP) is one of the constituents of Chinese celery extract that is used to treat stroke, dementia, and ischemic diseases. However, its role in traumatic brain injury is less well known. In this investigation, neuroprotective effects of DL-NBP in concussive head injury (CHI) on brain pathology were explored in a rat model. CHI was inflicted in anesthetized rats by dropping a weight of 114.6 g from a height of 20 cm through a guide tube on the exposed right parietal bone inducing an impact of 0...
August 30, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28797606/plasma-creatine-kinase-b-correlates-with-injury-severity-and-symptoms-in-professional-boxers
#9
Joseph Kilianski, Sophie Peeters, Jeff Debad, Joseph Mohmed, Steven E Wolf, Joseph P Minei, Ramon Diaz-Arrastia, Joshua W Gatson
INTRODUCTION: Each year in the United States, approximately 1.7 million people sustain a traumatic brain injury (TBI). Of these TBI events, about 75 percent are characterized as being mild brain injuries. Immediately following TBI, a secondary brain damage persists for hours, days, and even months. Previously, detection of neuronal and glial biomarkers have proven to be useful to predict neurological outcomes. Here, we hypothesized that creatine kinase, brain (CKBB) is a sensitive biomarker for acute secondary brain injury in professional boxers...
November 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28770112/anodal-transcranial-direct-current-stimulation-provokes-neuroplasticity-in-repetitive-mild-traumatic-brain-injury-in-rats
#10
Ho Jeong Kim, Soo Jeong Han
Repetitive mild traumatic brain injury (rmTBI) provokes behavioral and cognitive changes. But the study about electrophysiologic findings and managements of rmTBI is limited. In this study, we investigate the effects of anodal transcranial direct current stimulation (tDCS) on rmTBI. Thirty-one Sprague Dawley rats were divided into the following groups: sham, rmTBI, and rmTBI treated by tDCS. Animals received closed head mTBI three consecutive times a day. Anodal tDCS was applied to the left motor cortex. We evaluated the motor-evoked potential (MEP) and the somatosensory-evoked potential (SEP)...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28753688/the-role-of-neck-muscle-activities-on-the-risk-of-mild-traumatic-brain-injury-in-american-football
#11
Xin Jin, Zhaoying Feng, Valerie Mika, Haiyan Li, David C Viano, King H Yang
Concussion, or mild traumatic brain injury (mTBI), is frequently associated with sports activities. It has generally been accepted that neck strengthening exercises are effective as a preventive strategy for reducing sports-related concussion risks. However, the interpretation of the link between neck strength and concussion risks remains unclear. In this study, a typical helmeted head-to-head impact in American football was simulated using the head and neck complex finite element (FE) model. The impact scenario selected was previously reported in lab-controlled incident reconstructions from high-speed video footages of the National Football League using two head-neck complexes taken from Hybrid III dummies...
October 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28748496/huperzine-a-alleviates-neuroinflammation-oxidative-stress-and-improves-cognitive-function-after-repetitive-traumatic-brain-injury
#12
Zhengrong Mei, Peiying Zheng, Xiangping Tan, Ying Wang, Bing Situ
Traumatic brain injury (TBI) may trigger secondary injury cascades including endoplasmic reticulum stress, oxidative stress, and neuroinflammation. Unfortunately, there are no effective treatments targeting either primary or secondary injuries that result in long-term detrimental consequences. Huperzine A (HupA) is a potent acetylcholinesterase inhibitor (AChEI) that has been used treatment of Alzheimer's disease (AD). This study aimed to explore the neuroprotective effects of HupA in TBI and its possible mechanisms...
July 26, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28726717/mini-review-of-controlled-cortical-impact-a-well-suited-device-for-concussion-research
#13
REVIEW
Nicole Osier, C Edward Dixon
Mild traumatic brain injury (mTBI) is increasingly recognized as a significant public health problem which warrants additional research. Part of the effort to understand mTBI and concussion includes modeling in animals. Controlled cortical impact (CCI) is a commonly employed and well-characterized model of experimental TBI that has been utilized for three decades. Today, several commercially available pneumatic- and electromagnetic-CCI devices exist as do a variety of standard and custom injury induction tips...
July 20, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28696288/inhibition-of-the-integrated-stress-response-reverses-cognitive-deficits-after-traumatic-brain-injury
#14
Austin Chou, Karen Krukowski, Timothy Jopson, Ping Jun Zhu, Mauro Costa-Mattioli, Peter Walter, Susanna Rosi
Traumatic brain injury (TBI) is a leading cause of long-term neurological disability, yet the mechanisms underlying the chronic cognitive deficits associated with TBI remain unknown. Consequently, there are no effective treatments for patients suffering from the long-lasting symptoms of TBI. Here, we show that TBI persistently activates the integrated stress response (ISR), a universal intracellular signaling pathway that responds to a variety of cellular conditions and regulates protein translation via phosphorylation of the translation initiation factor eIF2α...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28673666/the-peculiar-properties-of-the-falx-and-tentorium-in-brain-injury-biomechanics
#15
Johnson Ho, Zhou Zhou, Xiaogai Li, Svein Kleiven
The influence of the falx and tentorium on brain injury biomechanics during impact was studied with finite element (FE) analysis. Three detailed 3D FE head models were created based on the images of a healthy, normal size head. Two of the models contained the addition of falx and tentorium with material properties from previously published experiments. Impact loadings from a reconstructed concussive case in a sport accident were applied to the two players involved. The results suggested that the falx and tentorium could induce large strains to the surrounding brain tissues, especially to the corpus callosum and brainstem...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28663736/a-mechanistic-end-to-end-concussion-model-that-translates-head-kinematics-to-neurologic-injury
#16
Laurel J Ng, Vladislav Volman, Melissa M Gibbons, Pi Phohomsiri, Jianxia Cui, Darrell J Swenson, James H Stuhmiller
Past concussion studies have focused on understanding the injury processes occurring on discrete length scales (e.g., tissue-level stresses and strains, cell-level stresses and strains, or injury-induced cellular pathology). A comprehensive approach that connects all length scales and relates measurable macroscopic parameters to neurological outcomes is the first step toward rationally unraveling the complexity of this multi-scale system, for better guidance of future research. This paper describes the development of the first quantitative end-to-end (E2E) multi-scale model that links gross head motion to neurological injury by integrating fundamental elements of tissue and cellular mechanical response with axonal dysfunction...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28654066/a-mouse-model-of-single-and-repetitive-mild-traumatic-brain-injury
#17
Bevan S Main, Stephanie S Sloley, Sonia Villapol, David N Zapple, Mark P Burns
Mild Traumatic Brain Injury (mTBI) can result in the acute loss of brain function, including a period of confusion, a loss of consciousness (LOC), focal neurological deficits and even amnesia. Athletes participating in contact sports are at high risk of exposure to large number of mTBIs. In terms of the level of injury in a sporting athlete, a mTBI is defined as a mild injury that does not cause gross pathological changes, but does cause short-term neurological deficits that are spontaneously resolved. Despite previous attempts to model mTBI in mice and rats, many have reported gross adverse effects including skull fractures, intracerebral bleeding, axonal injury and neuronal cell death...
June 20, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28620350/considerations-for-experimental-animal-models-of-concussion-traumatic-brain-injury-and-chronic-traumatic-encephalopathy-these-matters-matter
#18
REVIEW
Mark W Wojnarowicz, Andrew M Fisher, Olga Minaeva, Lee E Goldstein
Animal models of concussion, traumatic brain injury (TBI), and chronic traumatic encephalopathy (CTE) are widely available and routinely deployed in laboratories around the world. Effective animal modeling requires careful consideration of four basic principles. First, animal model use must be guided by clarity of definitions regarding the human disease or condition being modeled. Concussion, TBI, and CTE represent distinct clinical entities that require clear differentiation: concussion is a neurological syndrome, TBI is a neurological event, and CTE is a neurological disease...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28599608/a-brain-electrical-activity-eeg-based-biomarker-of-functional-impairment-in-traumatic-head-injury-a-multisite-validation-trial
#19
Daniel Hanley, Leslie S Prichep, Neeraj Badjatia, Jeff Bazarian, RIchard P Chiacchierini, Kenneth C Curley, John S Garrett, Elizabeth B Jones, Rosanne Naunheim, Brian J O'Neil, John O'Neill, Wright David, J Stephen Huff
The potential clinical utility of a novel quantitative EEG-based Brain Function Index (BFI) as a measure of the presence and severity of functional brain injury was studied as part of an independent prospective validation trial. The BFI was derived using EEG features associated with functional brain impairment reflecting current consensus on the physiology of concussive injury. 720 adult patients (18-85 years) evaluated within 72 hours of sustaining a closed head injury were enrolled at 11 US Emergency Departments...
June 9, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28544811/differential-protein-expression-in-exosomal-samples-taken-from-trauma-patients
#20
Ron B Moyron, Amber Gonda, Matthew J Selleck, Xian Luo-Owen, Richard D Catalano, Thomas O'Callahan, Carlos Garberoglio, David Turay, Nathan R Wall
Traumatic brain injuries (TBI) are among the most misdiagnosed and underreported types of head trauma. The potential long-term impact of undiagnosed or incorrectly identified concussions and other head injuries are potentially devastating, as evidenced by the increasing societal burden exhibited by soldiers returning from combat and athletes in contact sports. Concussions and TBI are notoriously difficult to correctly diagnose and prognosis for these injuries is poorly understood. In order to increase the likelihood of successful diagnosis, treatment, and prediction of outcomes, a definitive differential diagnosis will need to be established...
September 2017: Proteomics. Clinical Applications
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