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https://www.readbyqxmd.com/read/28738126/comparing-plasma-phospho-tau-total-tau-and-phospho-tau-total-tau-ratio-as-acute-and-chronic-traumatic-brain-injury-biomarkers
#1
Richard Rubenstein, Binggong Chang, John K Yue, Allen Chiu, Ethan A Winkler, Ava M Puccio, Ramon Diaz-Arrastia, Esther L Yuh, Pratik Mukherjee, Alex B Valadka, Wayne A Gordon, David O Okonkwo, Peter Davies, Sanjeev Agarwal, Fan Lin, George Sarkis, Hamad Yadikar, Zhihui Yang, Geoffrey T Manley, Kevin K W Wang, Shelly R Cooper, Kristen Dams-O'Connor, Allison J Borrasso, Tomoo Inoue, Andrew I R Maas, David K Menon, David M Schnyer, Mary J Vassar
Importance: Annually in the United States, at least 3.5 million people seek medical attention for traumatic brain injury (TBI). The development of therapies for TBI is limited by the absence of diagnostic and prognostic biomarkers. Microtubule-associated protein tau is an axonal phosphoprotein. To date, the presence of the hypophosphorylated tau protein (P-tau) in plasma from patients with acute TBI and chronic TBI has not been investigated. Objective: To examine the associations between plasma P-tau and total-tau (T-tau) levels and injury presence, severity, type of pathoanatomic lesion (neuroimaging), and patient outcomes in acute and chronic TBI...
July 24, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28737691/coagulopathy-in-the-setting-of-mild-traumatic-brain-injury-truths-and-consequences
#2
REVIEW
Joseph P Herbert, Andrew R Guillotte, Richard D Hammer, N Scott Litofsky
Mild traumatic brain injury (mTBI) is a common, although poorly-defined clinical entity. Despite its initially mild presentation, patients with mTBI can rapidly deteriorate, often due to significant expansion of intracranial hemorrhage. TBI-associated coagulopathy is the topic of significant clinical and basic science research. Unlike trauma-induced coagulopathy (TIC), TBI-associated coagulopathy does not generally follow widespread injury or global hypoperfusion, suggesting a distinct pathogenesis. Although the fundamental mechanisms of TBI-associated coagulopathy are far from clearly elucidated, several candidate molecules (tissue plasminogen activator (tPA), urokinase plasminogen activator (uPA), tissue factor (TF), and brain-derived microparticles (BDMP)) have been proposed which might explain how even minor brain injury can induce local and systemic coagulopathy...
July 22, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28732652/correlation-of-tenascin-c-concentrations-in-serum-with-outcome-of-traumatic-brain-injury-in-humans
#3
Yuan-Yuan Zhao, Lin Lou, Kai-Chuang Yang, Hai-Bo Wang, Yan Xu, Gang Lu, Hai-Yan He
BACKGROUND: Tenascin-C, a matricellular protein, is involved in brain injury. However, change of tenascin-C concentrations in peripheral blood remains unknown after traumatic brain injury (TBI). METHODS: Serum tenascin-C concentrations were measured in 100 healthy controls, 108 severe TBI patients, 79 moderate TBI patients and 32 mild TBI patients. RESULTS: Serum tenascin-C concentrations of patients were significantly higher than those of controls...
July 18, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28731870/the-association-of-cognitive-reserve-in-chronic-phase-functional-and-neuropsychological-outcomes-following-traumatic-brain-injury
#4
Jacob B Leary, Grace Y Kim, Catherine L Bradley, Uzma Z Hussain, Maryanne Sacco, Martha Bernad, John Collins, John Dsurney, Leighton Chan
OBJECTIVE: Examine the association of cognitive reserve (CR) factors (estimated premorbid intelligence quotient [IQ], years of education, and occupational attainment) and traumatic brain injury (TBI) severity with functional and neuropsychological outcomes 1 to 5 years following TBI. PARTICIPANTS: Patients with mild (N = 58), moderate (N = 25), or severe (N = 17) TBI. MAIN MEASURES: Cognitive reserve factors (estimated premorbid IQ, years of education, and occupational attainment); neuropsychological test battery; Glasgow Outcome Scale-Extended; Short Form-36 Health Survey...
July 20, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28728464/repeat-mild-traumatic-brain-injury-in-adolescent-rats-increases-subsequent-%C3%AE-amyloid-pathogenesis
#5
Daya Alexander Grant, Rebecka Serpa, Cameron R Moattari, Ari Brown, Tiffany Greco, Mayumi Prins, Edmond Teng
Single moderate-to-severe traumatic brain injuries (TBIs) may increase subsequent risk for neurodegenerative disease by facilitating β-amyloid (Aβ) deposition. However, the chronic effects on Aβ pathogenesis of repetitive mild TBIs, which are common in adolescents and young adults, remain uncertain. We examined the effects of repetitive mild TBI sustained during adolescence on subsequent deposition of Aβ pathology in a transgenic APP/PS1 rat model. Transgenic rats received sham or four individual mild TBI (rTBI) separated by either 24- or 72-hour intervals at post-natal day 35 (prior to Aβ plaque deposition)...
July 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28727580/increase-in-intracranial-pressure-by-application-of-a-rigid-cervical-collar-a-pilot-study-in-healthy-volunteers
#6
Iscander M Maissan, Rein Ketelaars, Boris Vlottes, Sanne E Hoeks, Dennis den Hartog, Robert J Stolker
OBJECTIVES: Rigid cervical collars are known to increase intracranial pressure (ICP) in severe traumatic brain injury (TBI). Cerebral blood flow might decrease according to the Kellie Monroe doctrine. For this reason, the use of the collar in patients with severe TBI has been abandoned from several trauma protocols in the Netherlands. There is no evidence on the effect of a rigid collar on ICP in patients with mild or moderate TBI or indeed patients with no TBI. As a first step we tested the effect in healthy volunteers with normal ICPs and intact autoregulation of the brain...
July 19, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28726717/mini-review-of-controlled-cortical-impact-a-well-suited-device-for-concussion-research
#7
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/28726590/a-method-of-managing-severe-traumatic-brain-injury-in-the-absence-of-intracranial-pressure-monitoring-the-ice-protocol
#8
Randall Chesnut, Nancy Temkin, Sureyya Dikmen, Carlos Rondina, Walter Videtta, Gustavo Petroni, Silvia Lujan, Victor Alanis, Antonio Luis Eiras Falcao, Gustavo La Fuente, Luis Gonzalez, Manuel Jibaja, Arturo Lavendez, Freddy Sandi Lora, Roberto Merida, Ricardo Romero, James Pridgeon, Jason Barber, Joan Machamer, Kelley Chaddock
Purpose - The imaging- and clinical-examination (ICE) algorithm used in the BEST TRIP ICP randomized controlled trial is the only prospectively investigated clinical protocol for TBI management without ICP monitoring. As the default literature standard, it warrants careful evaluation. Methods - We present the ICE protocol in detail and analyse the demographics, outcome, treatment intensity, frequency of intervention usage, and related adverse events in the ICE-protocol cohort. Results - The 167 ICE protocol patients were young (median 29 years) with a median Glasgow Coma Scale motor score of 4 but with anisocoria or abnormal pupillary reactivity in 40%...
July 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28726543/differences-in-brain-architecture-in-remote-mild-traumatic-brain-injury
#9
Aishwarya Rajesh, Gillian E Cooke, Jim M Monti, Andrew Jahn, Ana M Daugherty, Arthur Kramer
Mild TBI (mTBI) is brain trauma from an external impact with a loss of consciousness less than 30 minutes. MTBI results in several biopsychosocial impairments with pronounced cognitive deficits, thought to resolve within three months of injury. Previous research suggests that these impairments are due to a temporary inability to appropriately allocate neural resources in response to cognitive demands. Our study questioned this assumption and instead hypothesized that mTBI was associated with long-term neural disruptions and compromised brain structure integrity...
July 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28725550/dti-measures-identify-mild-and-moderate-tbi-cases-among-patients-with-complex-health-problems-a-receiver-operating-characteristic-analysis-of-u-s-veterans
#10
Keith L Main, Salil Soman, Franco Pestilli, Ansgar Furst, Art Noda, Beatriz Hernandez, Jennifer Kong, Jauhtai Cheng, Jennifer K Fairchild, Joy Taylor, Jerome Yesavage, J Wesson Ashford, Helena Kraemer, Maheen M Adamson
Standard MRI methods are often inadequate for identifying mild traumatic brain injury (TBI). Advances in diffusion tensor imaging now provide potential biomarkers of TBI among white matter fascicles (tracts). However, it is still unclear which tracts are most pertinent to TBI diagnosis. This study ranked fiber tracts on their ability to discriminate patients with and without TBI. We acquired diffusion tensor imaging data from military veterans admitted to a polytrauma clinic (Overall n = 109; Age: M = 47...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28724466/home-environment-as-a-predictor-of-long-term-executive-functioning-following-early-childhood-traumatic-brain-injury
#11
Christianne Laliberté Durish, Keith Owen Yeates, Terry Stancin, H Gerry Taylor, Nicolay C Walz, Shari L Wade
OBJECTIVES: This study examined the relationship of the home environment to long-term executive functioning (EF) following early childhood traumatic brain injury (TBI). METHODS: Participants (N=134) were drawn from a larger parent study of 3- to 6-year-old children hospitalized for severe TBI (n=16), complicated mild/moderate TBI (n=44), or orthopedic injury (OI; n=74), recruited prospectively at four tertiary care hospitals in the United States and followed for an average of 6...
July 20, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28717351/serial-sampling-of-serum-protein-biomarkers-for-monitoring-human-traumatic-brain-injury-dynamics-a-systematic-review
#12
REVIEW
Eric Peter Thelin, Frederick Adam Zeiler, Ari Ercole, Stefania Mondello, András Büki, Bo-Michael Bellander, Adel Helmy, David K Menon, David W Nelson
BACKGROUND: The proteins S100B, neuron-specific enolase (NSE), glial fibrillary acidic protein (GFAP), ubiquitin carboxy-terminal hydrolase L1 (UCH-L1), and neurofilament light (NF-L) have been serially sampled in serum of patients suffering from traumatic brain injury (TBI) in order to assess injury severity and tissue fate. We review the current literature of serum level dynamics of these proteins following TBI and used the term "effective half-life" (t1/2) in order to describe the "fall" rate in serum...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28698487/multiple-mild-traumatic-brain-injuries-are-associated-with-increased-rates-of-health-symptoms-and-gulf-war-illness-in-a-cohort-of-1990-1991-gulf-war-veterans
#13
Megan K Yee, Patricia A Janulewicz, Daniel R Seichepine, Kimberly A Sullivan, Susan P Proctor, Maxine H Krengel
Recent research demonstrated a relation between traumatic brain injury (TBI), health symptoms and diagnosis of Gulf War Illness (GWI) in Gulf War Veterans, but no study has examined the impact of multiple mild TBIs (mTBIs). A total of 229 male Gulf War Veterans from the Ft Devens Cohort were categorized by a number of mTBIs reported. One-way ANOVA and chi-square test of independence were used to test for differences in total reported health symptoms and diagnosis of chronic multisymptom illness (CMI) or Kansas GWI criteria, two of the most common case definitions of GWI...
July 9, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28694499/cystatin-d-cst5-an-ultra-early-inflammatory-biomarker-of-traumatic-brain-injury
#14
Lisa J Hill, Valentina Di Pietro, Jon Hazeldine, David Davies, Emma Tomman, Ann Logan, Antonio Belli
Traumatic brain injury (TBI) is set to become the leading cause of neurological disability across all age groups. Currently, no reliable biomarkers exist to help diagnose the severity of TBI to identify patients who are at risk of developing secondary injuries. Thus, the discovery of reliable biomarkers for the management of TBI would improve clinical interventions. Inflammatory markers are particularly suited for biomarker discovery as TBI leads to very early alterations in inflammatory proteins. Using the Proseek Multiplex Inflammation assay, we measured in patients that had suffered mild TBI (n = 10) or severe TBI (n = 10) with extra-cranial injury or extracranial injury only (EC) (n = 10), 92 inflammation-associated proteins in serum obtained: <1 hr (within 1-hour), 4-12 hr and 48-72 hr post injury...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28692515/criteria-for-performing-cranial-computed-tomography-for-chinese-patients-with-mild-traumatic-brain-injury-canadian-computed-tomography-head-rule-or-new-orleans-criteria
#15
Xiao-Feng Yang, Yuan-Yuan Meng, Liang Wen, Hao Wang
Computed tomography (CT) provides the primary diagnostic evidence for traumatic brain injury (TBI), but few positive traumatic findings are discovered in patients with mild TBI. In China, there are no existing criteria for selecting patients with mild TBI to undergo CT, and almost all of these patients undergo cranial CT in the emergency department. This retrospective study was performed to evaluate the necessity of cranial CT among patients with mild TBI, as well as the feasibility of 2 popular criteria (Canadian CT head rule [CCHR] and New Orleans Criteria [NOC]) in China...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28692408/preliminary-findings-of-altered-functional-connectivity-of-the-default-mode-network-linked-to-functional-outcomes-one-year-after-pediatric-traumatic-brain-injury
#16
Jaclyn A Stephens, Cynthia F Salorio, Anita D Barber, Sarah R Risen, Stewart H Mostofsky, Stacy J Suskauer
PURPOSE AND METHOD: This study examined functional connectivity of the default mode network (DMN) and examined brain-behavior relationships in a pilot cohort of children with chronic mild to moderate traumatic brain injury (TBI). RESULTS: Compared to uninjured peers, children with TBI demonstrated less anti-correlated functional connectivity between DMN and right Brodmann Area 40 (BA 40). In children with TBI, more anomalous less anti-correlated) connectivity between DMN and right BA 40 was linked to poorer performance on response inhibition tasks...
July 10, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28692352/responsiveness-and-discriminant-validity-of-the-child-and-adolescent-scale-of-participation-across-three-years-for-children-and-youth-with-traumatic-brain-injury
#17
Anat Golos, Gary Bedell
PURPOSE: To examine responsiveness and discriminant validity of the Child and Adolescent Scale of Participation (CASP) across three years. METHODS: Examined longitudinal data on 515 children and youth with TBI and arm injuries. Repeated measures analyses of variance were used to examine CASP scores (pre-injury; 3, 12, 24, 36 months post-injury). RESULTS: Scores decreased from pre-injury to 3 months, but significantly only for moderate and severe TBI groups...
July 10, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28689194/risk-factors-and-outcomes-associated-with-post-traumatic-headache-after-mild-traumatic-brain-injury
#18
Yilmaz Tansel, Gerwin Roks, Myrthe de Koning, Myrthe Scheenen, Harm van der Horn, Gerben Plas, Gerard Hageman, Guus Schoonman, Jacoba Spikman, Joukje van der Naalt
OBJECTIVES: To determine the prevalence and potential risk factors of acute and chronic post-traumatic headache (PTH) in patients with mild to moderate traumatic brain injury (TBI) in a prospective longitudinal observational multicentre study. Acute PTH (aPTH) is defined by new or worsening of pre-existing headache occurring within 7 days after trauma, whereas chronic PTH (cPTH) is defined as persisting aPTH >3 months after trauma. An additional goal was to study the impact of aPTH and cPTH in terms of return to work (RTW), anxiety and depression...
July 8, 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28689050/self-reported-traumatic-brain-injury-and-in-vivo-measure-of-ad-vulnerable-cortical-thickness-and-ad-related-biomarkers-in-the-adni-cohort
#19
Ming-Liang Wang, Xiao-Er Wei, Meng-Meng Yu, Peng-Yang Li, Wen-Bin Li
In this study, we aimed to investigate whether self-reported mild traumatic brain injury (mTBI) was associated with decreased AD-vulnerable cortical thickness, and to assess the relationship between AD-vulnerable cortical thickness and AD-related biomarker in the Alzheimer's Disease Neuroimaging Initiative subjects. We identified 45 self-reported mTBI subjects, who had structural MRI, 18F-AV45 PET, and cerebrospinal fluid (CSF) data. Of them, eight subjects were normal; ten were preclinical AD; seventeen were MCI due to AD; ten were AD...
July 5, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28682946/cerebral-alterations-following-experimental-multiple-trauma-and-hemorrhagic-shock
#20
Nina Vogt, Christiane Herden, Elke Roeb, Martin Roderfeld, Daphne Eschbach, Thorsten Steinfeldt, Hinnerk Wulf, Steffen Ruchholtz, Eberhard Uhl, Karsten Schöller
Multiple trauma (MT) associated with hemorrhagic shock (HS) might lead to cerebral hypoperfusion and brain damage. We investigated cerebral alterations using a new porcine MT/HS model without traumatic brain injury (TBI) and assessed the neuroprotective properties of mild therapeutic hypothermia. Male pigs underwent standardized MT with HS (45% or 50% loss of blood volume) and resuscitation after 90/120 minutes (T90/T120). In additional groups (TH90/TH120) mild hypothermia (33°C) was induced following resuscitation...
July 4, 2017: Shock
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