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Chronic traumatic encephalopathy (CTE)

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https://www.readbyqxmd.com/read/28813241/should-potential-risk-of-chronic-traumatic-encephalopathy-be-discussed-with-young-athletes
#1
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/28810748/chronic-traumatic-encephalopathy-cte-a-brief-historical-overview-and-recent-focus-on-nfl-players
#2
Craig W Lindsley
No abstract text is available yet for this article.
August 16, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28805003/protein-astrogliopathies-in-human-neurodegenerative-diseases-and-aging
#3
Gabor G Kovacs, Virginia M Lee, John Q Trojanowski
Neurodegenerative diseases are characterized by progressive dysfunction and loss of neurons associated with depositions of pathologically altered proteins showing hierarchical involvement of brain regions. The role of astrocytes in the pathogenesis of neurodegenerative diseases is explored as contributors to neuronal degeneration or neuroprotection pathways, and also as potential mediators of the transcellular spreading of disease-associated proteins. Protein astrogliopathy (PAG), including deposition of amyloid-β, prion protein, tau, α-synuclein, and very rarely transactive response DNA-binding protein 43 (TDP-43) is not unprecedented or unusual in neurodegenerative diseases...
September 2017: Brain Pathology
https://www.readbyqxmd.com/read/28742910/clinicopathological-evaluation-of-chronic-traumatic-encephalopathy-in-players-of-american-football
#4
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/28715400/a-novel-method-to-model-chronic-traumatic-encephalopathy-in-drosophila
#5
Mingkuan Sun, Liam L Chen
Chronic Traumatic Encephalopathy (CTE) is an established neurodegenerative disease that is closely associated with exposure to repetitive mild Traumatic Brain Injury (mTBI). The mechanisms responsible for its complex pathological changes remain largely elusive, despite a recent consensus to define the neuropathological criteria. Here, we describe a novel method to develop a model of CTE in Drosophila melanogaster (Drosophila ) in an attempt to identify the key genes and pathways that lead to the characteristic hyperphosphorylated tau accumulation and neuronal death in the brain...
July 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28680303/an-autopsy-proven-child-onset-chronic-traumatic-encephalopathy
#6
Kyuho Lee, Seong-Ik Kim, Yujin Lee, Jae Kyung Won, Sung-Hye Park
Here we present an autopsy case of chronic traumatic encephalopathy (CTE) in a 36-year-old man. He had a history of febrile seizures at the age of four and was severely demented at age 10 when he was admitted to a mental hospital. He had suffered repetitive self-harm, such as frequent banging of the head on the wall in his hospital record, but he had no clear history between the ages of four and ten. Autopsy revealed global cerebral atrophy, including the basal ganglia, thalamus, hippocampus, amygdala, mammilary bodies and lateral geniculate bodies...
June 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28674990/traumatic-brain-injury-as-a-trigger-of-neurodegeneration
#7
Victoria E Johnson, William Stewart, John D Arena, Douglas H Smith
Although millions of individuals suffer a traumatic brain injury (TBI) worldwide each year, it is only recently that TBI has been recognized as a major public health problem. Beyond the acute clinical manifestations, there is growing recognition that a single severe TBI (sTBI) or repeated mild TBIs (rTBI) can also induce insidious neurodegenerative processes, which may be associated with early dementia, in particular chronic traumatic encephalopathy (CTE). Identified at autopsy examination in individuals with histories of exposure to sTBI or rTBI, CTE is recognized as a complex pathology featuring both macroscopic and microscopic abnormalities...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28664614/evolving-concepts-of-chronic-traumatic-encephalopathy-as-a-neuropathological-entity
#8
Helen Ling, James W Neal, Tamas Revesz
Chronic traumatic encephalopathy (CTE) is a long-term neurodegenerative consequence of repetitive head impacts which can only be definitively diagnosed in post-mortem. Recently, the consensus neuropathological criteria for the diagnosis of CTE was published requiring the presence of the accumulation of abnormal tau in neurons and astroglia distributed around small blood vessels at the depths of cortical sulci in an irregular pattern as the mandatory features. The clinical diagnosis and antemortem prediction of CTE pathology remain challenging if not impossible due to the common co-existing underlying neurodegenerative pathologies and the lack of specific clinical pointers and reliable biomarkers...
June 30, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28637381/role-of-caspase-3-mediated-apoptosis-in-chronic-caspase-3-cleaved-tau-accumulation-and-blood-brain-barrier-damage-in-the-corpus-callosum-after-traumatic-brain-injury-in-rats
#9
Olena Y Glushakova, Andriy O Glushakov, Cesar V Borlongan, Alex B Valadka, Ronald L Hayes, Alexander V Glushakov
Traumatic brain injury (TBI) may be a significant risk factor for development of neurodegenerative disorders such as chronic traumatic encephalopathy (CTE), post-traumatic epilepsy (PTE), and Alzheimer's (AD) and Parkinson's (PD) diseases. Chronic TBI is associated with several pathological features that are also characteristic of neurodegenerative diseases, including tau pathologies, caspase-3-mediated apoptosis, neuroinflammation, and microvascular alterations. The goal of this study was to evaluate changes following TBI in cleaved-caspase-3 and caspase-3-cleaved tau truncated at Asp421, and their relationships to cellular markers potentially associated with inflammation and blood-brain (BBB) barrier damage...
July 21, 2017: Journal of Neurotrauma
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/28524178/transcriptome-analyses-of-chronic-traumatic-encephalopathy-show-alterations-in-protein-phosphatase-expression-associated-with-tauopathy
#11
Jeong-Sun Seo, Seungbok Lee, Jong-Yeon Shin, Yu Jin Hwang, Hyesun Cho, Seong-Keun Yoo, Yunha Kim, Sungsu Lim, Yun Kyung Kim, Eun Mi Hwang, Su Hyun Kim, Chong-Hyun Kim, Seung Jae Hyeon, Ji-Young Yun, Jihye Kim, Yona Kim, Victor E Alvarez, Thor D Stein, Junghee Lee, Dong Jin Kim, Jong-Il Kim, Neil W Kowall, Hoon Ryu, Ann C McKee
Chronic traumatic encephalopathy (CTE) is a progressive neurodegenerative disorder that is associated with repetitive head injury and has distinctive neuropathological features that differentiate this disease from other neurodegenerative diseases. Intraneuronal tau aggregates, although they occur in different patterns, are diagnostic neuropathological features of CTE, but the precise mechanism of tauopathy is not known in CTE. We performed whole RNA sequencing analysis of post-mortem brain tissue from patients with CTE and compared the results to normal controls to determine the transcriptome signature changes associated with CTE...
May 19, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28520686/clinical-correlates-to-assist-with-chronic-traumatic-encephalopathy-diagnosis-insights-from-a-novel-rodent-repeat-concussion-model
#12
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/28511970/cleomedes-of-astypalaea-a-possible-early-sufferer-of-chronic-traumatic-encephalopathy
#13
Rodolfo Savica, Mario Roberto Vaz Carneiro Filho, Christopher J Boes
Dementia pugilistica was the term adopted by H. Martland in 1928 to identify boxers with cognitive decline. In more recent years, the syndrome of dementia pugilistica with pathological correlates has been defined as chronic traumatic encephalopathy (CTE). A number of sportsmen have been recently diagnosed with CTE; and we may have identified an ancient Greek athlete of pankration who presented with the symptoms that have been associated with CTE. Our study reports the history and the known clinical information about Cleomedes of Astypalaea, possibly the first athlete ever affected by CTE...
August 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28490998/do-patients-with-temporal-lobe-epilepsy-and-cognitive-decline-have-alzheimer-s-disease-or-chronic-traumatic-encephalopathy-cte
#14
COMMENT
William B Barr
No abstract text is available yet for this article.
March 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28478818/the-multi-factorial-origins-of-chronic-traumatic-encephalopathy-cte-symptomology-in-post-career-athletes-the-athlete-post-career-adjustment-ap-ca-model
#15
Michael Gaetz
CTE has two prominent components: the pathophysiology that is detected in the brain postmortem and the symptomology that is present in the interval between retirement and end of life. CTE symptomology has been noted to include memory difficulties, aggression, depression, explosivity, and executive dysfunction at early stages progressing to problems with attention, mood swings, visuospatial difficulties, confusion, progressive dementia, and suicidality (e.g. McKee et al. (2012), Omalu et al. (2010a-c), McKee et al...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28390515/chronic-traumatic-encephalopathy-known-causes-unknown-effects
#16
REVIEW
Diego Iacono, Sharon B Shively, Brian L Edlow, Daniel P Perl
Chronic traumatic encephalopathy (CTE) is a neuropathologic diagnosis typically made in human brains with a history of repetitive traumatic brain injury (rTBI). It remains unknown whether CTE occurs exclusively after rTBI, or whether a single TBI (sTBI) can cause CTE. Similarly, it is unclear whether impact (eg, motor vehicle accidents) and non-impact (eg, blasts) types of energy transfer trigger divergent or common pathologies. While it is established that a history of rTBI increases the risk of multiple neurodegenerative diseases (eg, dementia, parkinsonism, and CTE), the possible pathophysiologic and molecular mechanisms underlying these risks have yet to be elucidated...
May 2017: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/28347679/chronic-traumatic-encephalopathy-the-cellular-sequela-to-repetitive-brain-injury
#17
REVIEW
Alexander R Vile, Leigh Atkinson
This review aims to integrate current literature on the pathogenic mechanisms of Chronic Traumatic Encephalopathy (CTE) to create a multifactorial understanding of the disease. CTE is a progressive neurodegenerative disease, classed as a tauopathy, although it appears the pathogenic mechanisms are more complex than this. It affects those with a history of repetitive mild traumatic brain injury. Currently, there are no treatments for CTE and the disease can only be affirmatively diagnosed in post mortem. Understanding the pathogenesis of the disease will provide an avenue to explore possible treatment and diagnostic modalities...
July 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28338593/clinical-correlates-to-assist-with-cte-diagnosis-insights-from-a-novel-rodent-repeat-concussion-model
#18
Gretchen M Thomsen, Ara Ko, Megan Y Harada, Annie Ma, Livia Wyss, Patricia Haro, Jean-Philippe Vit, Pablo Avalos, Navpreet Dhillon, Noell Cho, Oksana Shelest, Eric J Ley
INTRODUCTION: Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease linked to repetitive head injuries. CTE symptoms include changes in mood, behavior, cognition and motor function, however CTE is only currently diagnosed post-mortem. 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 WT rats, 8 rats received 2 injuries ('2xTBI'), 27 rats received 5 injuries ('5xTBI') and 13 rats were sham controls...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28326890/functional-and-molecular-correlates-following-single-and-repeated-rat-closed-head-concussion-indices-of-vulnerability-following-brain-injury
#19
Andrea Mountney, Angela Boutte, Casandra M Cartagena, William J Flerlage, David Johnson, Chanyang Rho, Xi-Chun M Lu, Angela M Yarnell, Sean R Marcsisin, Jason Sousa, Chau Vuong, Victor E Zottig, Lai Yee Leung, Ying Deng-Bryant, Janice Gilsdorf, Frank C Tortella, Deborah A Shear
Closed-head concussive injury is one of the most common causes of traumatic brain injury (TBI). Isolated concussions frequently produce acute neurological impairments; however, individuals typically recover spontaneously within a short time frame. In contrast, brain injuries resulting from multiple concussions can result in cumulative damage and elevated risk of developing chronic brain pathologies, including chronic traumatic encephalopathy (CTE). Increased attention has focused on identification of diagnostic markers that can prognostically serve as indices of brain health after injury, revealing the temporal profile of vulnerability to a second insult...
March 22, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28269777/what-is-the-relationship-of-traumatic-brain-injury-to-dementia
#20
Mario F Mendez
There is a long history linking traumatic brain injury (TBI) with the development of dementia. Despite significant reservations, such as recall bias or concluding causality for TBI, a summary of recent research points to several conclusions on the TBI-dementia relationship. 1) Increasing severity of a single moderate-to-severe TBI increases the risk of subsequent Alzheimer's disease (AD), the most common type of dementia. 2) Repetitive, often subconcussive, mild TBIs increases the risk for chronic traumatic encephalopathy (CTE), a degenerative neuropathology...
2017: Journal of Alzheimer's Disease: JAD
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