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Juvenile traumatic brain injury

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https://www.readbyqxmd.com/read/29788004/juvenile-traumatic-brain-injury-results-in-cognitive-deficits-associated-with-impaired-endoplasmic-reticulum-stress-and-early-tauopathy
#1
Michael J Hylin, Ryan C Holden, Aidan C Smith, Aric F Logsdon, Rabia Qaiser, Brandon P Lucke-Wold
The leading cause of death in the juvenile population is trauma, and in particular neurotrauma. The juvenile brain response to neurotrauma is not completely understood. Endoplasmic reticulum (ER) stress has been shown to contribute to injury expansion and behavioral deficits in adult rodents and furthermore has been seen in adult postmortem human brains diagnosed with chronic traumatic encephalopathy. Whether endoplasmic reticulum stress is increased in juveniles with traumatic brain injury (TBI) is poorly delineated...
May 22, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29743575/delayed-and-progressive-damages-to-juvenile-mice-after-moderate-traumatic-brain-injury
#2
Shu Zhao, Xiaoting Wang, Xiang Gao, Jinhui Chen
Symptoms are commonly more severe in pediatric traumatic brain injury (TBI) patients than in young adult TBI patients. To understand the mechanism, juvenile mice received a controlled cortical impact (CCI) injury at moderate level. Tissue lesion and cell death were measured and compared to our previous reports on brain injury in the young adult mice that received same level of impact using same injury device. Tissue lesion and cell death in the cortex was much less in the juvenile mouse brain in the first few hours after injury...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29738554/repeated-mild-traumatic-brain-injury-can-cause-acute-neurologic-impairment-without-overt-structural-damage-in-juvenile-rats
#3
Alicia Meconi, Ryan C Wortman, David K Wright, Katie J Neale, Melissa Clarkson, Sandy R Shultz, Brian R Christie
Repeated concussion is becoming increasingly recognized as a serious public health concern around the world. Moreover, there is a greater awareness amongst health professionals of the potential for repeated pediatric concussions to detrimentally alter the structure and function of the developing brain. To better study this issue, we developed an awake closed head injury (ACHI) model that enabled repeated concussions to be performed reliably and reproducibly in juvenile rats. A neurological assessment protocol (NAP) score was generated immediately after each ACHI to help quantify the cumulative effects of repeated injury on level of consciousness, and basic motor and reflexive capacity...
2018: PloS One
https://www.readbyqxmd.com/read/29676680/midline-central-fluid-percussion-model-of-traumatic-brain-injury-in-pediatric-and-adolescent-rats
#4
Rachel K Rowe, Jordan L Harrison, Timothy W Ellis, P David Adelson, Jonathan Lifshitz
OBJECTIVE Experimental traumatic brain injury (TBI) models hold significant validity to the human condition, with each model replicating a subset of clinical features and symptoms. TBI is the leading cause of mortality and morbidity in children and teenagers; thus, it is critical to develop preclinical models of these ages to test emerging treatments. Midline fluid percussion injury (FPI) might best represent mild and diffuse clinical brain injury because of the acute behavioral deficits, the late onset of behavioral morbidities, and the absence of gross histopathology...
April 20, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29665077/gliovascular-changes-precede-white-matter-damage-and-long-term-disorders-in-juvenile-mild-closed-head-injury
#5
Beatriz Rodriguez-Grande, Andre Obenaus, Aleksandra Ichkova, Justine Aussudre, Thomas Bessy, Elodie Barse, Bassem Hiba, Gwénaëlle Catheline, Grégory Barrière, Jerome Badaut
Traumatic brain injury (TBI) is a leading cause of hospital visits in pediatric patients and often leads to long-term disorders even in cases of mild severity. White matter (WM) alterations are commonly observed in patients months or years after the injury assessed by magnetic resonance imaging (MRI), but little is known about WM pathophysiology early after mild pediatric TBI. To evaluate the status of the gliovascular unit in this context, mild TBI was induced in postnatal-day 17 mice using a closed head injury model with two grades of severity (G1, G2)...
April 17, 2018: Glia
https://www.readbyqxmd.com/read/29660967/a-call-for-implementing-preferred-practices-for-brain-injury-screening-in-youth-to-improve-transition
#6
Drew A Nagele, Melissa McCart, Stephen R Hooper
BACKGROUND: It is vital to engage in systematic screening to identify and serve children who may have sustained an acquired brain injury (ABI) - either traumatic or non-traumatic, so they can be successfully transitioned between environments and life stages. This is particularly important for children and adolescents given the impact an ABI can have on learning and social functioning over the course of the neurodevelopmental process. A pattern of repeated, undiagnosed mild brain injuries may lead to mood or behavior disorders, learning problems...
2018: NeuroRehabilitation
https://www.readbyqxmd.com/read/29648487/bdnf-expression-increases-without-changes-in-play-behavior-following-concussion-in-juvenile-rats-rattus-norvegicus-brief-report
#7
Allison C F Dyck, Tammy L Ivanco
PURPOSE: Young children have a high risk of concussion or mild traumatic brain injury (mTBI). Children often appear healthy soon after mTBI, but some have pervasive cognitive and/or motor impairments. Understanding underlying mechanisms recruited after concussion may help for return to play protocols and mitigating what might be lifelong impairments. METHODS: We investigated molecular and behavioral changes in a rat model of childhood concussion. Rats received an injury or sham procedure at an age approximately equivalent to the human period of early childhood...
April 12, 2018: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/29432885/repetitive-brain-injury-of-juvenile-mice-impairs-environmental-enrichment-induced-modulation-of-rem-sleep-in-adulthood
#8
Jeremy C Borniger, Kyra Ungerleider, Ning Zhang, Kate Karelina, Ulysses J Magalang, Zachary M Weil
Traumatic brain injuries (TBIs) are a common and costly ongoing public health concern. Injuries that occur during childhood development can have particularly profound and long-lasting effects. One common consequence and potential mediator of negative outcomes of TBI is sleep disruption which occurs in a substantial proportion of TBI patients. These individuals report greater incidences of insomnia and sleep fragmentation combined with a greater overall sleep requirement meaning that many patients are chronically sleep-deprived...
April 1, 2018: Neuroscience
https://www.readbyqxmd.com/read/29395778/minocycline-blocks-traumatic-brain-injury-induced-alcohol-consumption-and-nucleus-accumbens-inflammation-in-adolescent-male-mice
#9
Kate Karelina, Samuel Nicholson, Zachary M Weil
Alcohol use is a well characterized risk factor for traumatic brain injury (TBI); however, emerging clinical and experimental research suggests that TBI may also be an independent risk factor for the development of alcohol use disorders. In particular, TBIs incurred early in life predict the development of problem alcohol use and increase vulnerability to neuroinflammation as a consequence of alcohol use. Critically, the neuroinflammatory response to alcohol, mediated in large part by microglia, may also function as a driver of further alcohol use...
March 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29333742/parvalbumin-fast-spiking-interneurons-are-selectively-altered-by-paediatric-traumatic-brain-injury
#10
Joshua Nichols, George Reed Bjorklund, Jason Newbern, Trent Anderson
KEY POINTS: Traumatic brain injury (TBI) in children remains a leading cause of death and disability and it remains poorly understood why children have worse outcomes and longer recover times. TBI has shown to alter cortical excitability and inhibitory drive onto excitatory neurons, yet few studies have directly examined changes to cortical interneurons. This is addressed in the present study using a clinically relevant model of severe TBI (controlled cortical impact) in interneuron cell type specific Cre-dependent mice...
April 1, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29066322/alterations-in-mesoscopic-oscillations-affecting-episodic-memory-following-developmental-traumatic-brain-injury
#11
Chaitali Biswas, Dejan Marković, Christopher C Giza
Certain deficits of episodic memory among young adults are the delayed consequences of an earlier mild or moderate Traumatic Brain Injury (mTBI). We examined alterations in hippocampal Local Field Oscillations (LFOs) of equivalently-impaired juvenile rodents to identify reliable functional markers of single-incidence mTBI. Two persistent, behavior-dependent, electrophysiological markers of injury were identified in the absence of external physiological symptoms by the analysis of wirelessly-transmitted hippocampal LFOs (3-80Hz) during repeat measures of the Novel Object Recognition (NOR) paradigm...
February 2018: Experimental Neurology
https://www.readbyqxmd.com/read/28802560/traumatic-brain-injuries-during-development-disrupt-dopaminergic-signaling
#12
Kate Karelina, Kristopher R Gaier, Zachary M Weil
Traumatic brain injuries (TBI) sustained during peri-adolescent development produce lasting neuro-behavioral changes that render individuals at an increased risk for developing substance abuse disorders. Experimental and clinical evidence of a prolonged period of hypodopaminergia after TBI have been well documented, but the effect of juvenile TBI on dopaminergic dysfunction and its relationship with substance abuse have not been investigated. In order to determine the effect of juvenile brain injury on dopaminergic signaling, female mice were injured at 21days of age and then beginning seven weeks later were assessed for behavioral sensitization to amphetamine, a drug that increases synaptic dopamine availability...
November 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28685977/the-post-therapeutic-effect-of-rapamycin-in-mild-traumatic-brain-injured-rats-ensuing-in-the-upregulation-of-autophagy-and-mitophagy
#13
Changxing Wang, Zhiying Hu, Yang Zou, Mingjun Xiang, Yuting Jiang, Benson O A Botchway, Xue Huo, Xiaoxue Du, Marong Fang
Mild traumatic brain injury (mTBI), common in juveniles, has been reported to be caused by sports-related concussion. Many young children may suffer from post-concussion syndrome. mTBI, in early stages of life, could play a part in neuron apoptosis and degeneration, cognitive and motor coordination impairment, as well as dementia. Our study was aimed at further investigating the post-therapeutic efficacy of rapamycin in the recuperation of mTBI while at the same time investigating the metamorphosis in both autophagy and mitophagy in mTBI...
September 2017: Cell Biology International
https://www.readbyqxmd.com/read/28625390/dopamine-protects-cerebral-autoregulation-and-prevents-hippocampal-necrosis-after-traumatic-brain-injury-via-block-of-erk-mapk-in-juvenile-pigs
#14
Victor Curvello, Hugh Hekierski, Philip Pastor, Monica S Vavilala, William M Armstead
Traumatic brain injury (TBI) contributes to morbidity in children, and more boys experience TBI. Cerebral autoregulation is impaired after TBI, contributing to poor outcome. Cerebral Perfusion Pressure (CPP) is often normalized by use of vasoactive agents to increase mean arterial pressure (MAP). In prior studies of newborn and juvenile pigs, vasoactive agent choice influenced outcome after TBI as a function of age and sex, with none protecting cerebral autoregulation in both ages and sexes. Dopamine (DA) prevents impairment of cerebral autoregulation in male and female newborn pigs via inhibition of upregulation of ERK mitogen activated protein kinase (MAPK) after fluid percussion injury (FPI)...
September 1, 2017: Brain Research
https://www.readbyqxmd.com/read/28397372/k-channel-impairment-determines-sex-and-age-differences-in-epinephrine-mediated-outcomes-after-brain-injury
#15
William M Armstead, John Riley, Monica S Vavilala
Traumatic brain injury (TBI) is the leading cause of injury-related death in children, with boys and children under 4 years having particularly poor outcomes. Activation of ATP- and calcium-sensitive (KATP and KCa ) channels produces cerebrovasodilation and contributes to autoregulation, both of which are impaired after TBI, contributing to poor outcomes. Upregulation of the c-Jun-terminal kinase (JNK) isoform of mitogen-activated protein kinase produces K channel function impairment after CNS injury. Vasoactive agents can be used to normalize cerebral perfusion pressure...
October 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28355201/sex-and-age-differences-in-phenylephrine-mechanisms-and-outcomes-after-piglet-brain-injury
#16
Victor Curvello, Hugh Hekierski, John Riley, Monica Vavilala, William M Armstead
BackgroundTraumatic brain injury (TBI) is the leading cause of injury-related death in children, with boys and children under 4 years of age having particularly poor outcomes. Cerebral autoregulation is often impaired after TBI, contributing to poor outcome. In prior studies on newborn pigs, phenylephrine (Phe) preferentially protected cerebral autoregulation in female but not in male subjects after TBI. We hypothesized that, in contrast to the newborn, Phe prevents impairment of autoregulation and tissue injury following TBI in both sexes of older pigs...
July 2017: Pediatric Research
https://www.readbyqxmd.com/read/28219086/first-report-of-awake-craniotomy-of-a-famous-musician-suprasellar-tumor-surgery-of-pianist-clara-haskil-in-1942
#17
Elena Romana Gasenzer, Ayhan Kanat, Edmund A M Neugebauer
Clara Haskil (January 7, 1895-December 7, 1960) was one of the most famous female pianists of the 20th century. In her life and work she set new standards in piano playing. However, her career was beset by poor health and the adversities of two world wars. In her lifetime Haskil had three major disorders: juvenile scoliosis requiring treatment in her adolescence, a tumor of the sellar region requiring surgery at age 47 years, and a traumatic brain injury causing her death at the age of 65. Her medical history illustrates the development of surgical methods and rehabilitation in medicine before and after World War II...
May 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28217290/neuroprotective-effect-of-hyperbaric-oxygen-therapy-in-a-juvenile-rat-model-of-repetitive-mild-traumatic-brain-injury
#18
Lei Huang, Andre Obenaus, Mary Hamer, John H Zhang
Repetitive mild traumatic brain injury (rmTBI) is an important medical concern for adolescent athletes that can lead to long-term disabilities. Multiple mild injuries may exacerbate tissue damage resulting in cumulative brain injury and poor functional recovery. In the present study, we investigated the increased brain vulnerability to rmTBI and the effect of hyperbaric oxygen treatment using a juvenile rat model of rmTBI. Two episodes of mild cortical controlled impact (3 days apart) were induced in juvenile rats...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28127505/traumatic-brain-injury-among-female-offenders-in-a-prison-population-results-of-the-fleurytbi-study
#19
Eric Durand, Laurence Watier, Anne Lécu, Michel Fix, Jean-Jacques Weiss, Mathilde Chevignard, Pascale Pradat-Diehl
AIM: The study was designed to estimate the prevalence of traumatic brain injury (TBI) in a French prison population of female offenders, study the variables known to be associated with TBI, and compare our results with those obtained among male offenders as described in a previous paper. PARTICIPANTS: All female offenders (adults and juveniles) consecutively admitted to Fleury-Mérogis prison over a 3-month period were included in the study. METHOD: During the admission procedure, female offenders were interviewed by healthcare staff using a self-reported questionnaire...
January 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28060202/the-relationship-between-traumatic-brain-injury-and-criminality-in-juvenile-offenders
#20
Wayne A Gordon, Lisa A Spielman, Amanda E Hahn-Ketter, Karla Therese L Sy
OBJECTIVE: To examine the relationship between traumatic brain injury (TBI) and criminal behavior in youth who are incarcerated or on probation in Texas. SETTING: Seven juvenile justice facilities. PARTICIPANTS: Juvenile offenders in state or county correctional facilities or on probation. DESIGN: Screening for TBI was conducted among adolescents at 7 juvenile justice centers. MAIN MEASURES: Participants were administered the Brain Injury Screening Questionnaire, and results were linked to participants' offense history and psychiatric diagnoses...
November 2017: Journal of Head Trauma Rehabilitation
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