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CTE

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129 papers 25 to 100 followers
By David Rhine MD FRCPC. Emergency medicine. Special interest in concussion management.
https://www.readbyqxmd.com/read/29036831/dementia-pugilistica-revisited
#1
Rudy J Castellani, George Perry
 Extensive exposure of boxers to neurotrauma in the early 20th century led to the so-called punch drunk syndrome, which was formally recognized in the medical literature in 1928. "Punch drunk" terminology was replaced by the less derisive 'dementia pugilistica' in 1937. In the early case material, the diagnosis of dementia pugilistica required neurological deficits, including slurring dysarthria, ataxia, pyramidal signs, extrapyramidal signs, memory impairment, and personality changes, although the specific clinical substrate has assumed lesser importance in recent years with a shift in focus on molecular pathogenesis...
October 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28742910/clinicopathological-evaluation-of-chronic-traumatic-encephalopathy-in-players-of-american-football
#2
Jesse Mez, Daniel H Daneshvar, Patrick T Kiernan, Bobak Abdolmohammadi, Victor E Alvarez, Bertrand R Huber, Michael L Alosco, Todd M Solomon, Christopher J Nowinski, Lisa McHale, Kerry A Cormier, Caroline A Kubilus, Brett M Martin, Lauren Murphy, Christine M Baugh, Phillip H Montenigro, Christine E Chaisson, Yorghos Tripodis, Neil W Kowall, Jennifer Weuve, Michael D McClean, Robert C Cantu, Lee E Goldstein, Douglas I Katz, Robert A Stern, Thor D Stein, Ann C McKee
Importance: Players of American football may be at increased risk of long-term neurological conditions, particularly chronic traumatic encephalopathy (CTE). Objective: To determine the neuropathological and clinical features of deceased football players with CTE. Design, Setting, and Participants: Case series of 202 football players whose brains were donated for research. Neuropathological evaluations and retrospective telephone clinical assessments (including head trauma history) with informants were performed blinded...
July 25, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28981345/injury-cascades-in-tbi-related-neurodegeneration
#3
Steven T DeKosky, Breton M Asken
Traumatic brain injury (TBI) is a widely recognized risk factor for neurodegenerative disease. The purpose of this review is to provide an update on the state of the science related to injury cascades in TBI-related neurodegeneration. Acute and chronic pathological outcomes of TBI are similar to those seen in several neurodegenerative conditions, suggesting common linking pathways. Initial research described severe TBI patients with post-mortem identification of abnormal proteins, such as amyloid deposits. History of mild TBI (mTBI) is less consistently associated with heightened risk of neurodegenerative outcomes, but specific populations with complicated medical histories and comorbidities may be more susceptible...
2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28975240/research-gaps-and-controversies-in-chronic-traumatic-encephalopathy-a-review
#4
REVIEW
Breton M Asken, Molly J Sullan, Steven T DeKosky, Michael S Jaffee, Russell M Bauer
Importance: Scientific and lay interest in negative outcomes associated with exposure to repetitive brain trauma (RBT) continues to strengthen. Concerns about the association between RBT and dementia began more than a century ago, but have resurfaced in the last decade with the more recently described chronic traumatic encephalopathy (CTE). Chronic traumatic encephalopathy is a tauopathy associated with RBT that has become inextricably linked to conversations about sport-related concussion and mild traumatic brain injury...
October 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28920887/the-chronic-and-evolving-neurological-consequences-of-traumatic-brain-injury
#5
REVIEW
Lindsay Wilson, William Stewart, Kristen Dams-O'Connor, Ramon Diaz-Arrastia, Lindsay Horton, David K Menon, Suzanne Polinder
Traumatic brain injury (TBI) can have lifelong and dynamic effects on health and wellbeing. Research on the long-term consequences emphasises that, for many patients, TBI should be conceptualised as a chronic health condition. Evidence suggests that functional outcomes after TBI can show improvement or deterioration up to two decades after injury, and rates of all-cause mortality remain elevated for many years. Furthermore, TBI represents a risk factor for a variety of neurological illnesses, including epilepsy, stroke, and neurodegenerative disease...
October 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28914886/multiple-sclerosis-concussion-during-adolescence-linked-to-increased-risk-of-ms
#6
Peter Sidaway
No abstract text is available yet for this article.
September 15, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28885451/visual-structure-and-function-in-collision-sport-athletes
#7
Danielle Leong, Christina Morettin, Leonard V Messner, Robert J Steinmetz, Yi Pang, Steven L Galetta, Laura J Balcer
BACKGROUND: Vision-based measures have been shown to be useful markers in multiple sclerosis (MS), Alzheimer and Parkinson disease. Therefore, these testing paradigms may have applications to populations explaining repetitive head trauma that has been associated with long-term neurodegenerative sequelae. We investigated retinal structure and visual function in professional collision sport athletes compared to age- and race-matched control participants. METHODS: In this cross-sectional study, participants underwent spectral-domain optical coherence tomography (OCT) measurements of peripapillary retinal nerve fiber layer (RNFL) and macular ganglion cell complex (GCC = ganglion cell + inner plexiform layers) thickness...
September 6, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28839132/neuroimaging-of-sport-concussion-persistent-alterations-in-brain-structure-and-function-at-medical-clearance
#8
Nathan W Churchill, Michael G Hutchison, Doug Richards, General Leung, Simon J Graham, Tom A Schweizer
The medical decision of return to play (RTP) after a sport concussion is largely based on symptom status following a graded exercise protocol. However, it is currently unknown how objective markers of brain structure and function relate to clinical recovery. The goal of this study was to determine whether differences in brain structure and function at acute injury remain present at RTP. In this longitudinal study, 54 active varsity athletes were scanned using magnetic resonance imaging (MRI), including 27 with recent concussion, imaged at both acute injury and medical clearance, along with 27 matched controls...
August 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813241/should-potential-risk-of-chronic-traumatic-encephalopathy-be-discussed-with-young-athletes
#9
Kimberly Hornbeck, Kevin Walter, Matthew Myrvik
As participation in youth sports has risen over the past two decades, so has the incidence of youth sports injuries. A common topic of concern is concussion, or mild traumatic brain injury, in young athletes and whether concussions sustained at a young age could lead to lifelong impairment such as chronic traumatic encephalopathy (CTE). While the pathway from a concussed young athlete to an adult with CTE remains unknown, current research is attempting to provide more clarity. This article discusses how health care professionals can help foster an informed, balanced decision-making process regarding participation in contact sports that involves the parents as well as the children...
July 1, 2017: AMA Journal of Ethics
https://www.readbyqxmd.com/read/28620350/considerations-for-experimental-animal-models-of-concussion-traumatic-brain-injury-and-chronic-traumatic-encephalopathy-these-matters-matter
#10
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/28520686/clinical-correlates-to-assist-with-chronic-traumatic-encephalopathy-diagnosis-insights-from-a-novel-rodent-repeat-concussion-model
#11
Gretchen M Thomsen, Ara Ko, Megan Y Harada, Annie Ma, Livia Wyss, Patricia Haro, Jean-Philippe Vit, Pablo Avalos, Navpreet K Dhillon, Noell Cho, Oksana Shelest, Eric J Ley
INTRODUCTION: Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease linked to repetitive head injuries. Chronic traumatic encephalopathy symptoms include changes in mood, behavior, cognition, and motor function; however, CTE is currently diagnosed only postmortem. Using a rat model of recurrent traumatic brain injury (TBI), we demonstrate rodent deficits that predict the severity of CTE-like brain pathology. METHODS: Bilateral, closed-skull, mild TBI was administered once per week to 35 wild-type rats; eight rats received two injuries (2×TBI), 27 rats received five injuries (5×TBI), and 13 rats were sham controls...
June 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28509819/cortical-and-physical-function-after-mild-traumatic-brain-injury
#12
Alia L Yasen, David R Howell, Li-Shan Chou, Angela M Pazzaglia, Anita D Christie
PURPOSE: The aim of this study was to prospectively examine the association between intracortical inhibition and functional recovery after mild traumatic brain injury (mTBI). METHODS: Twenty individuals with mTBI and 20 matched control participants were assessed using transcranial magnetic stimulation, the Attentional Network Test, and gait analysis. Hierarchical linear modeling was used to longitudinally examine potential differences between groups and relationships in the pattern of recovery in cortical silent period (CSP) duration, cognitive reaction time, and single- and dual-task walking speeds across five testing time points...
June 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28506441/association-of-traumatic-brain-injury-and-alzheimer-disease-onset-a-systematic-review
#13
REVIEW
J Julien, S Joubert, M-C Ferland, L C Frenette, M M Boudreau-Duhaime, L Malo-Véronneau, E de Guise
BACKGROUND: Inconsistencies regarding the risk of developing Alzheimer disease after traumatic brain injury (TBI) remain in the literature. Indeed, why AD develops in certain TBI patients while others are unaffected is still unclear. OBJECTIVE: The aim of this study was to performed a systematic review to investigate whether certain variables related to TBI, such as TBI severity, loss of consciousness (LOC) and post-traumatic amnesia (PTA), are predictors of risk of AD in adults...
May 11, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28455362/a-systematic-review-of-potential-long-term-effects-of-sport-related-concussion
#14
REVIEW
Geoff Manley, Andrew J Gardner, Kathryn J Schneider, Kevin M Guskiewicz, Julian Bailes, Robert C Cantu, Rudolph J Castellani, Michael Turner, Barry D Jordan, Christopher Randolph, Jiří Dvořák, K Alix Hayden, Charles H Tator, Paul McCrory, Grant L Iverson
OBJECTIVE: Systematic review of possible long-term effects of sports-related concussion in retired athletes. DATA SOURCES: Ten electronic databases. STUDY SELECTION: Original research; incidence, risk factors or causation related to long-term mental health or neurological problems; individuals who have suffered a concussion; retired athletes as the subjects and possible long-term sequelae defined as >10 years after the injury. DATA EXTRACTION: Study population, exposure/outcome measures, clinical data, neurological examination findings, cognitive assessment, neuroimaging findings and neuropathology results...
June 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28446457/consensus-statement-on-concussion-in-sport-the-5-th-international-conference-on-concussion-in-sport-held-in-berlin-october-2016
#15
Paul McCrory, Willem Meeuwisse, Jiří Dvorak, Mark Aubry, Julian Bailes, Steven Broglio, Robert C Cantu, David Cassidy, Ruben J Echemendia, Rudy J Castellani, Gavin A Davis, Richard Ellenbogen, Carolyn Emery, Lars Engebretsen, Nina Feddermann-Demont, Christopher C Giza, Kevin M Guskiewicz, Stanley Herring, Grant L Iverson, Karen M Johnston, James Kissick, Jeffrey Kutcher, John J Leddy, David Maddocks, Michael Makdissi, Geoff T Manley, Michael McCrea, William P Meehan, Sinji Nagahiro, Jon Patricios, Margot Putukian, Kathryn J Schneider, Allen Sills, Charles H Tator, Michael Turner, Pieter E Vos
No abstract text is available yet for this article.
April 26, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28396360/concussion-dementia-and-cte-are-we-getting-it-very-wrong
#16
EDITORIAL
Alan Carson
No abstract text is available yet for this article.
June 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28337734/diffusion-tensor-imaging-dti-findings-in-adult-civilian-military-and-sport-related-mild-traumatic-brain-injury-mtbi-a-systematic-critical-review
#17
Breton Michael Asken, Steven T DeKosky, James R Clugston, Michael S Jaffee, Russell M Bauer
This review seeks to summarize diffusion tensor imaging (DTI) studies that have evaluated structural changes attributed to the mechanisms of mild traumatic brain injury (mTBI) in adult civilian, military, and athlete populations. Articles from 2002 to 2016 were retrieved from PubMed/MEDLINE, EBSCOhost, and Google Scholar, using a Boolean search string containing the following terms: "diffusion tensor imaging", "diffusion imaging", "DTI", "white matter", "concussion", "mild traumatic brain injury", "mTBI", "traumatic brain injury", and "TBI"...
March 24, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28298054/long-term-effects-of-adolescent-sport-concussion-across-the-age-spectrum
#18
Douglas N Martini, James T Eckner, Sean K Meehan, Steven P Broglio
BACKGROUND: Research in sport concussion has increased greatly over the previous decade due to increased scientific interest as well as the media and political spotlight that has been cast on this injury. However, a dearth of literature is available regarding the long-term (>1 year after concussion) effects of adolescent concussion on cognitive and motor performance of high school athletes. PURPOSE: To evaluate the potential for long-term effects of concussion sustained during high school on cognitive and motor performance across the lifespan...
May 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28254594/the-current-status-of-research-on-chronic-traumatic-encephalopathy
#19
REVIEW
Kenneth Perrine, Jacqueline Helcer, Apostolos John Tsiouris, David J Pisapia, Philip Stieg
Chronic traumatic encephalopathy (CTE) evolved from the term dementia pugilistica describing the dementia found in many boxers to its current use in describing the dementia and depression sometimes found in athletes subjected to multiple concussions or subconcussive blows to the head. Concurrently, the neuropathology evolved to specify a unique type of tauopathy found in perivascular spaces at the depth of sulci and other features not typically seen in neurodegenerative tauopathies. Four stages of CTE have been proposed, with 4 corresponding clinical syndromes of traumatic encephalopathy syndrome...
June 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28205009/mixed-pathologies-including-chronic-traumatic-encephalopathy-account-for-dementia-in-retired-association-football-soccer-players
#20
Helen Ling, Huw R Morris, James W Neal, Andrew J Lees, John Hardy, Janice L Holton, Tamas Revesz, David D R Williams
In retired professional association football (soccer) players with a past history of repetitive head impacts, chronic traumatic encephalopathy (CTE) is a potential neurodegenerative cause of dementia and motor impairments. From 1980 to 2010, 14 retired footballers with dementia were followed up regularly until death. Their clinical data, playing career, and concussion history were prospectively collected. Next-of-kin provided consent for six to have post-mortem brain examination. Of the 14 male participants, 13 were professional and 1 was a committed amateur...
March 2017: Acta Neuropathologica
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