keyword
MENU ▼
Read by QxMD icon Read
search

Diffuse axonal injury

keyword
https://www.readbyqxmd.com/read/29786464/what-can-we-learn-from-diffusion-tensor-imaging-from-a-large-traumatic-brain-injury-cohort-white-matter-integrity-and-its-relationship-with-outcome
#1
Ana M Castaño-Leon, Marta Cicuendez, Blanca Navarro, Pablo M Munarriz, Santiago Cepeda, Igor Paredes, Amaya Hilario, Ana Ramos, Pedro Antonio Gomez, Alfonso Lagares
Traumatic axonal injury (TAI) contributes significantly to mortality and morbidity after traumatic brain injury (TBI) but its identification is still a diagnostic challenge because of the limitations of conventional imaging techniques to characterized it. Diffusion tensor imaging (DTI) can indirectly identify areas of damaged white matter (WM) integrity by detecting water molecules diffusion alterations. Therefore, DTI may improve detection and description of TAI lesions after TBI. We have obtained DTI data from 217 patients with moderate to severe TBI acquired at median 19 days after TBI were and patient DTI metrics were compared with data obtained from 58 age-matched healthy controls...
May 22, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29786463/hybrid-diffusion-imaging-in-mild-traumatic-brain-injury
#2
Yu-Chien Wu, Sourajit Mitra Mustafi, Jaroslaw Harezlak, Chandana Kodiweera, Laura A Flashman, Thomas McAllister
Mild traumatic brain injury (mTBI) is an important public health problem. Although conventional medical imaging techniques can detect moderate-to-severe injuries, they are relatively insensitive to mTBI. In this study, we used hybrid diffusion imaging (HYDI) to detect white-matter alterations in nineteen patients with mTBI and 23 other trauma-control patients. Within 15 days (SD=10) of brain injury, all subjects underwent magnetic-resonance HYDI and were assessed with battery of neuropsychological tests of sustained attention, memory, and executive function...
May 22, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29774826/patients-with-diffuse-axonal-injury-can-recover-to-a-favourable-long-term-functional-and-quality-of-life-outcome
#3
Marleen Maria van Eijck, Joukje van der Naalt, Mariska de Jongh, Guus G Schoonman, Annemarie Wilhelma Oldenbeuving, Jo Peluso, Jolanda de Vries, Gerwin Roks
Functional outcome and quality of life are difficult to predict in patients with diffuse axonal injury (DAI) after traumatic brain injury (TBI). The primary aim of this cross-sectional cohort study was to assess the long-term functional outcome in patients with DAI and to identify prognostic factors. Secondly, health-related quality of life (HRQL) at long-term follow-up was assessed. Patients aged ≥16 with TBI and DAI (admitted 2008-2014) were included. Clinical and imaging data were collected. The primary outcome parameter was the Glasgow Coma Scale Extended (GOSE) at long-term follow-up...
May 18, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29773299/diffusion-mri-in-acute-nervous-system-injury
#4
Matthew D Budde, Nathan P Skinner
Diffusion weighted magnetic resonance imaging (DWI) and related techniques such as diffusion tensor imaging (DTI) are uniquely sensitive to the microstructure of the brain and spinal cord. In the acute aftermath of nervous system injury, for example, DWI reveals changes caused by injury that remains invisible on other MRI contrasts such as T2 -weighted imaging. This ability has led to a demonstrated clinical utility in cerebral ischemia. However, despite strong promise in preclinical models and research settings, DWI has not been as readily adopted for other acute injuries such as traumatic spinal cord, brain, or peripheral nerve injury...
April 30, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29769541/modchimera-a-novel-murine-closed-head-model-of-moderate-traumatic-brain-injury
#5
A D Sauerbeck, C Fanizzi, J H Kim, M Gangolli, P V Bayly, C L Wellington, D L Brody, T T Kummer
Traumatic brain injury is a major source of global disability and mortality. Preclinical TBI models are a crucial component of therapeutic investigation. We report a tunable, monitored model of murine non-surgical, diffuse closed-head injury-modCHIMERA-characterized by impact as well as linear and rotational acceleration. modCHIMERA is based on the Closed-Head Impact Model of Engineered Rotational Acceleration (CHIMERA) platform. We tested this model at 2 energy levels: 1.7 and 2.1 Joules-substantially higher than previously reported for this system...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29768334/a-case-report-of-b-lymphoblastic-lymphoma-with-brain-metastases-clinical-and-pathological-significance-of-head-trauma-misdiagnosis
#6
Jian Shi, Jale Manzo, Yiwu Zhou, Peter Agovino, Song Wu
INTRODUCTION: B lymphoblastic lymphoma (B-LBL) is a rare type of lymphoma that originates from precursor lymphocytes. B-BLB in adults with brain metastases is extremely rare as the disease mainly affects children and adults. Therefore, such a seldom-seen case can easily trigger a dispute regarding clinical diagnosis and treatment.This paper reports the case of a 22-year-old man hospitalized for a head injury that resulted from a physical altercation. Upon admission to the hospital, the patient was diagnosed with a diffuse axonal injury (DAI)...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29752739/filter-probe-diffusion-imaging-improves-spinal-cord-injury-outcome-prediction
#7
Nathan P Skinner, Seung-Yi Lee, Shekar N Kurpad, Brian D Schmit, L Tugan Muftuler, Matthew D Budde
OBJECTIVE: Diffusion weighted imaging (DWI) is a powerful tool for investigating spinal cord injury (SCI), but has limited specificity for axonal damage- the most predictive feature of long-term functional outcome. In this study, a technique designed to detect acute axonal injury, filter-probe double diffusion encoding (FP-DDE) is compared with standard DWI for predicting long-term functional and cellular outcomes. METHODS: This study extends FP-DDE to predict long-term functional and histological outcomes in a rat SCI model of varying severities(n=58)...
May 11, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29749094/magnetic-resonance-spectroscopy-of-fiber-tracts-in-children-with-traumatic-brain-injury-a-combined-mrs-diffusion-mri-study
#8
Emily L Dennis, Talin Babikian, Jeffry Alger, Faisal Rashid, Julio E Villalon-Reina, Yan Jin, Alexander Olsen, Richard Mink, Christopher Babbitt, Jeffrey Johnson, Christopher C Giza, Paul M Thompson, Robert F Asarnow
Traumatic brain injury can cause extensive damage to the white matter (WM) of the brain. These disruptions can be especially damaging in children, whose brains are still maturing. Diffusion magnetic resonance imaging (dMRI) is the most commonly used method to assess WM organization, but it has limited resolution to differentiate causes of WM disruption. Magnetic resonance spectroscopy (MRS) yields spectra showing the levels of neurometabolites that can indicate neuronal/axonal health, inflammation, membrane proliferation/turnover, and other cellular processes that are on-going post-injury...
May 10, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29747571/axonal-chronic-injury-in-treatment-na%C3%A3-ve-hiv-adults-with-asymptomatic-neurocognitive-impairment-and-its-relationship-with-clinical-variables-and-cognitive-status
#9
Rui-Li Li, Jun Sun, Zhen-Chao Tang, Jing-Ji Zhang, Hong-Jun Li
BACKGROUND: HIV is a neurotropic virus, and it can bring about neurodegeneration and may even result in cognitive impairments. The precise mechanism of HIV-associated white matter (WM) injury is unknown. The effects of multiple clinical contributors on WM impairments and the relationship between the WM alterations and cognitive performance merit further investigation. METHODS: Diffusion tensor imaging (DTI) was performed in 20 antiretroviral-naïve HIV-positive asymptomatic neurocognitive impairment (ANI) adults and 20 healthy volunteers...
May 10, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29746557/optic-tract-injury-after-closed-head-traumatic-brain-injury-in-mice-a-model-of-indirect-traumatic-optic-neuropathy
#10
Nathan K Evanson, Fernanda Guilhaume-Correa, James P Herman, Michael D Goodman
Adult male C57BL/6J mice have previously been reported to have motor and memory deficits after experimental closed head traumatic brain injury (TBI), without associated gross pathologic damage or neuroimaging changes detectable by magnetic resonance imaging or diffusion tensor imaging protocols. The presence of neurologic deficits, however, suggests neural damage or dysfunction in these animals. Accordingly, we undertook a histologic analysis of mice after TBI. Gross pathology and histologic analysis using Nissl stain and NeuN immunohistochemistry demonstrated no obvious tissue damage or neuron loss...
2018: PloS One
https://www.readbyqxmd.com/read/29741097/metabolic-and-structural-imaging-at-7-tesla-after-repetitive-mild-traumatic-brain-injury-in-immature-rats
#11
Emin Fidan, Lesley M Foley, Lee Ann New, Henry Alexander, Patrick M Kochanek, T Kevin Hitchens, Hülya Bayır
Mild traumatic brain injury (mTBI) in children is a common and serious public health problem. Traditional neuroimaging findings in children who sustain mTBI are often normal, putting them at risk for repeated mTBI (rmTBI). There is a need for more sensitive imaging techniques capable of detecting subtle neurophysiological alterations after injury. We examined neurochemical and white matter changes using diffusion tensor imaging of the whole brain and proton magnetic resonance spectroscopy of the hippocampi at 7 Tesla in 18-day-old male rats at 7 days after mTBI and rmTBI...
January 2018: ASN Neuro
https://www.readbyqxmd.com/read/29731669/transcranial-light-emitting-diode-therapy-for-neuropsychological-improvement-after-traumatic-brain-injury-a-new-perspective-for-diffuse-axonal-lesion-management
#12
REVIEW
João Gustavo Rocha Peixoto Dos Santos, Wellingson Silva Paiva, Manoel Jacobsen Teixeira
The cost of traumatic brain injury (TBI) for public health policies is undeniable today. Even patients who suffer from mild TBI may persist with cognitive symptoms weeks after the accident. Most of them show no lesion in computed tomography or conventional magnetic resonance imaging, but microstructural white matter abnormalities (diffuse axonal lesion) can be found in diffusion tensor imaging. Different brain networks work together to form an important part of the cognition process, and they can be affected by TBI...
2018: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/29690938/neuropsychological-recovery-trajectories-in-moderate-to-severe-traumatic-brain-injury-influence-of-patient-characteristics-and-diffuse-axonal-injury-erratum
#13
Amanda R Rabinowitz, Tessa Hart, John Whyte, Junghoon Kim
No abstract text is available yet for this article.
April 25, 2018: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29690927/effects-of-transcranial-led-therapy-on-the-cognitive-rehabilitation-for-diffuse-axonal-injury-due-to-severe-acute-traumatic-brain-injury-study-protocol-for-a-randomized-controlled-trial
#14
João Gustavo Rocha Peixoto Dos Santos, Ana Luiza Costa Zaninotto, Renato Amaro Zângaro, Ana Maria Costa Carneiro, Iuri Santana Neville, Almir Ferreira de Andrade, Manoel Jacobsen Teixeira, Wellingson Silva Paiva
BACKGROUND: Photobiomodulation describes the use of red or near-infrared light to stimulate or regenerate tissue. It was discovered that near-infrared wavelengths (800-900 nm) and red (600 nm) light-emitting diodes (LED) are able to penetrate through the scalp and skull and have the potential to improve the subnormal cellular activity of compromised brain tissue. Different experimental and clinical studies were performed to test LED therapy for traumatic brain injury (TBI) with promising results...
April 24, 2018: Trials
https://www.readbyqxmd.com/read/29690837/neutralization-of-interleukin-1%C3%AE-following-diffuse-traumatic-brain-injury-in-the-mouse-attenuates-the-loss-of-mature-oligodendrocytes
#15
Johanna Flygt, Karsten Ruscher, Amanda Norberg, Anis Mir, Hermann Gram, Fredrik Clausen, Niklas Marklund
Traumatic brain injury (TBI) commonly results in injury to the components of the white matter tracts, causing post-injury cognitive deficits. The myelin-producing oligodendrocytes (OLs) are vulnerable to TBI although may plausibly be replaced by proliferating oligodendrocyte progenitor cells (OPCs). The cytokine interleukin-1β (IL-1β) is a key mediator of the complex inflammatory response, and when neutralized in experimental TBI behavioral outcome was improved. To evaluate the role of IL-1β on OL cell death and OPC proliferation, 116 adult male mice subjected to sham injury or the central fluid percussion injury (cFPI) model of traumatic axonal injury, were analyzed at 2, 7 and 14 days post-injury...
April 25, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29682033/diagnostic-and-prognostic-capability-of-newer-magnetic-resonance-imaging-brain-sequences-in-diffuse-axonal-injury-patient
#16
Mayank Bansal, Virendra Deo Sinha, Juhi Bansal
Objectives: Diffuse axonal injury is one of the major causes of unconsciousness, profound neurologic deficits and persistent vegetative state after head trauma. In recent years, MR imaging has been gaining popularity as an adjunctive imaging method in patients with DAI. Our study aims to assess the relative diagnostic and prognostic capability of various MRI sequences. Patients and Methods: Retrospective observational study done in 1 year duration on 30 DAI patients...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29680179/progress-in-understanding-the-pathophysiology-of-multiple-sclerosis
#17
REVIEW
H Zéphir
Multiple sclerosis (MS) arises in people who have a genetic susceptibility to environmental factors and events, which ultimately trigger the disease. It is thought that peripheral immune cells are mobilized and enter the CNS through the impaired blood-brain barrier in the subarachnoid space, as acute lesions show large numbers of macrophages and CD8+ T cells and, to a lesser extent, CD4+ T cells, B cells and plasma cells. Demyelination is mostly localized to focal lesions in early relapsing-remitting (RR) MS, whereas other areas of white matter appear normal...
April 18, 2018: Revue Neurologique
https://www.readbyqxmd.com/read/29664964/monitoring-for-myelopathic-progression-with-multiparametric-quantitative-mri
#18
Allan R Martin, Benjamin De Leener, Julien Cohen-Adad, Sukhvinder Kalsi-Ryan, David W Cadotte, Jefferson R Wilson, Lindsay Tetreault, Aria Nouri, Adrian Crawley, David J Mikulis, Howard Ginsberg, Eric M Massicotte, Michael G Fehlings
BACKGROUND: Patients with mild degenerative cervical myelopathy (DCM) are often managed non-operatively, and surgery is recommended if neurological progression occurs. However, detection of progression is often subjective. Quantitative MRI (qMRI) directly measures spinal cord (SC) tissue changes, detecting axonal injury, demyelination, and atrophy. This longitudinal study compared multiparametric qMRI with clinical measures of progression in non-operative DCM patients. METHODS: 26 DCM patients were followed...
2018: PloS One
https://www.readbyqxmd.com/read/29663930/diffusion-tensor-imaging-evaluation-of-axonal-white-matter-remodeling-in-a-mouse-model-of-diabetic-stroke-treated-with-novel-p38-mapk-inhibitor-vcp979
#19
Yu Cai, Chunqiang Lu, Tingting Xu, Yuanyuan Ma, Shudan Min, Peter Scammells, Binghui Wang, Shenghong Ju
Type 2 diabetes mellitus (T2DM) is associated with severe axonal/white matter (WM) injury and poor functional outcomes following ischemic stroke. T2DM induces activation of p38 mitogen-activated protein kinases (MAPKs), which may be linked to the axonal/WM damage. In the present study, adult male C57BL/6J mice with streptozotocin (STZ)-induced T2DM mice were subjected to photothrombotic ischemic stroke and treatment with p38 MAPK inhibitors. The novel p38 MAPK inhibitor, VCP979, significantly promoted axonal/WM remodeling, neural progenitor cell migration, and improved functional recovery in T2DM mice...
March 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29662272/effect-of-bulk-modulus-on-deformation-of-the-brain-under-rotational-accelerations
#20
S Ganpule, N P Daphalapurkar, M Pirtini Cetingul, K T Ramesh
Traumatic brain injury such as that developed as a consequence of blast is a complex injury with a broad range of symptoms and disabilities. Computational models of brain biomechanics hold promise for illuminating the mechanics of traumatic brain injury (TBI) and for developing preventive devices. However, reliable material parameters are needed for models to be predictive. Unfortunately, the properties of human brain tissue are difficult to measure, and the bulk modulus of brain tissue in particular is not well-characterized...
January 2018: Shock Waves
keyword
keyword
31116
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"