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https://www.readbyqxmd.com/read/28539210/design-and-testing-of-a-controlled-electromagnetic-spinal-cord-impactor-for-use-in-large-animal-models-of-acute-traumatic-spinal-cord-injury
#1
Rory J Petteys, Steven M Spitz, Hasan Syed, R Andrew Rice, Rachel Sarabia-Estrada, C Rory Goodwin, Daniel M Sciubba, Brett A Freedman
BACKGROUND: Spinal cord injury (SCI) causes debilitating neurological dysfunction and has been observed in warfighters injured in IED blasts. Clinical benefit of SCI treatment remains elusive and better large animal models are needed to assess treatment options. Here, we describe a controlled electromagnetic spinal cord impactor for use in large animal models of SCI. METHODS: A custom spinal cord impactor and platform were fabricated for large animals (e.g., pig, sheep, dog, etc...
May 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28513398/-nurse-believed-in-me-and-helped-me-piece-my-life-back-together
#2
Diane Palmer
While serving in the Royal Anglian Regiment in Afghanistan in 2007, I was seriously injured by friendly fire. I was left with significant physical and psychological injuries from the blast.
May 17, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28511279/blast-associated-traumatic-brain-injury-in-the-military-as-a-potential-trigger-for-dementia-and-chronic-traumatic-encephalopathy
#3
James Hasoon
Traumatic brain injuries (TBIs) resulting from blast exposures have significantly affected US military personnel throughout the world, particularly in Iraq and Afghanistan. From 2000-2016, more than 350,000 military service members were diagnosed with a TBI. Since the majority of blast-related TBIs are classified as mild with no definitive findings on physical examination or diagnostic studies, it is difficult to accurately diagnose individuals inflicted with such injuries. There are likely far more mild TBIs that remain undiagnosed in the military...
January 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28505593/foot-ankle-complex-injury-risk-curves-using-calcaneus-bone-mineral-density-data
#4
Narayan Yoganandan, Sajal Chirvi, Liming Voo, Nicholas DeVogel, Frank A Pintar, Anjishnu Banerjee
OBJECTIVE: Biomechanical data from post mortem human subject (PMHS) experiments are used to derive human injury probability curves and develop injury criteria. This process has been used in previous and current automotive crashworthiness studies, Federal safety standards, and dummy design and development. Human bone strength decreases as the individuals reach their elderly age. Injury risk curves using the primary predictor variable (e.g., force) should therefore account for such strength reduction when the test data are collected from PMHS specimens of different ages (age at the time of death)...
May 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28490003/binaural-tympanic-membrane-perforations-after-blast-injury
#5
Jeroen B van Rijswijk, Patrick Dubach
A 30-year-old man presented to the emergency department with new-onset hearing loss and tinnitus in both ears after a blast injury. While at a wedding that included celebratory fireworks, he had been standing near a sand-filled mortar when it accidentally ignited. Otoscopy revealed multiple..
May 11, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28486051/characterization-of-differences-in-functional-connectivity-associated-with-close-range-blast-exposure
#6
Meghan Robinson, Dustin Clark, William Milberg, Regina McGlinchey, David Salat
Despite the prevalence of blast injuries in recent overseas conflicts, our knowledge of their impact on neural health is lacking. We have recently published work demonstrating differences in functional magnetic resonance imaging (fMRI) connectivity that were specific to close-range blast exposure (CBE), as opposed to other prevalent military-related factors. Here, we replicate this finding in an independent sample of 135 Veterans, again finding that CBE, regardless of concussion, is predictive of persistent changes in brain physiology...
May 9, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28484418/blast-exposure-white-matter-integrity-and-cognitive-function-in-iraq-and-afghanistan-combat-veterans
#7
Iliyan Ivanov, Corey Fernandez, Effie M Mitsis, Dara L Dickstein, Edmund Wong, Cheuk Y Tang, Jessie Simantov, Charlene Bang, Erin Moshier, Mary Sano, Gregory A Elder, Erin A Hazlett
The long-term effects of blast exposure are a major health concern for combat veterans returning from the recent conflicts in Iraq and Afghanistan. We used an optimized diffusion tensor imaging tractography algorithm to assess white matter (WM) fractional anisotropy (FA) in blast-exposed Iraq and Afghanistan veterans (n = 40) scanned on average 3.7 years after deployment/trauma exposure. Veterans diagnosed with a blast-related mild traumatic brain injury (mTBI) were compared to combat veterans with blast exposure but no TBI diagnosis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28482796/effects-of-cold-acclimation-on-gene-expression-in-fall-field-cricket-gryllus-pennsylvanicus-ionoregulatory-tissues
#8
Lauren E Des Marteaux, Alexander H McKinnon, Hiroko Udaka, Jantina Toxopeus, Brent J Sinclair
BACKGROUND: Cold tolerance is a key determinant of temperate insect distribution and performance. Chill-susceptible insects lose ion and water homeostasis during cold exposure, but prior cold acclimation improves both cold tolerance and defense of homeostasis. The mechanisms underlying these processes are mostly unknown; cold acclimation is thought to enhance ion transport in the cold and/or prevent leak of water and ions. To identify candidate mechanisms of cold tolerance plasticity we generated transcriptomes of ionoregulatory tissues (hindgut and Malpighian tubules) from Gryllus pennsylvanicus crickets and compared gene expression in warm- and cold-acclimated individuals...
May 8, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28472996/a-survey-of-proteomic-biomarkers-for-heterotopic-ossification-in-blood-serum
#9
Laura E Edsberg, Erin L Crowgey, Patrick M Osborn, Jennifer T Wyffels
BACKGROUND: Heterotopic ossification (HO) is a significant problem for wounded warriors surviving high-energy blast injuries; however, currently, there is no biomarker panel capable of globally characterizing, diagnosing, and monitoring HO progression. The aim of this study was to identify biomarkers for HO using proteomic techniques and blood serum. METHODS: Isobaric tags for relative and absolute quantitation (iTRAQ) was used to generate a semi-quantitative global proteomics survey of serum from patients with and without heterotopic ossification...
May 4, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28459965/functional-decline-5-years-after-blast-traumatic-brain-injury-sounding-the-alarm-for-a-wave-of-disability
#10
Kristen Dams-O'Connor, Jack W Tsao
No abstract text is available yet for this article.
May 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28459953/early-clinical-predictors-of-5-year-outcome-after-concussive-blast-traumatic-brain-injury
#11
Christine L Mac Donald, Jason Barber, Mary Jordan, Ann M Johnson, Sureyya Dikmen, Jesse R Fann, Nancy Temkin
Importance: The long-term clinical effects of wartime traumatic brain injuries (TBIs), most of which are mild, remain incompletely described. Current medical disability cost estimates from world conflicts continually surpass projections. Additional information regarding long-term functional trajectory is needed to reduce this extensive public health burden. Objectives: To examine 5-year clinical outcomes leveraging existing clinical data collected at 1 year after injury in the same patients and to identify early risk factors for long-term disability...
May 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28455230/mangiferin-attenuates-blast-induced-traumatic-brain-injury-via-inhibiting-nlrp3-inflammasome
#12
Kaihua Fan, Jie Ma, Wenjing Xiao, Jingmin Chen, Juan Wu, Jiandong Ren, Jun Hou, Yonghe Hu, Jianwen Gu, Botao Yu
There is growing evidence that Mangiferin possess therapeutic benefit during neuroinflammation on various brain injury models due to its anti-inflammatory properties. It is reported that inflammatory plays a crucial role in the pathogenesis of secondary injury induced by the blast-induced traumatic brain injury (bTBI). However, the role of mangiferin in bTBI is yet to be studied. In our study, the potential effect of mangiferin in the duration of bTBI was examined first. Fortunately, the amelioration of cerebral cortex damage was found in rats suffering bTBI after mangiferin administration...
April 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28452879/aeromedical-evacuation-relevant-hypobaria-worsens-axonal-and-neurologic-injury-in-rats-following-underbody-blast-induced-hyperacceleration
#13
Julie L Proctor, Kaitlin T Mello, Raymond Fang, Adam C Puche, Robert E Rosenthal, William L Fourney, Ulrich H Leiste, Gary Fiskum
BACKGROUND: Occupants of military vehicles targeted by explosive devices often suffer from traumatic brain injury (TBI) and are typically transported by the aeromedical evacuation (AE) system to a military medical center within a few days. This study tested the hypothesis that exposure of rats to AE-relevant hypobaria worsens cerebral axonal injury and neurologic impairment caused by underbody blasts. METHODS: Anesthetized adult male rats were secured within cylinders attached to a metal plate, simulating the hull of an armored vehicle...
April 27, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28450946/effect-of-vacuum-sealing-drainage-on-the-expression-of-vegf-and-mirna-17-5p-in-seawater-immersed-blast-injury-wounds
#14
Fen Yang, Bing Shi, Ling Cao
The aim of the present study was to compare and observe the expression levels of vascular endothelial growth factor (VEGF) and miRNA-17-5p during the treatment of seawater-immersed blast-injury wounds (SIBIW) under different conditions of vacuum sealing drainage (VSD), and to identify the optimized range of VSD treatment and partially explain its mechanisms. The bilateral hips and scapulae of experimental pigs (weight, 25-30 kg) were subjected to blast-injury wounds, followed by the seawater immersion. The animals then underwent conventional dressing treatment under 120, 180 and 240 mmHg VSD...
March 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28446350/the-first-aid-and-hospital-treatment-of-gunshot-and-blast-injuries
#15
Axel Franke, Dan Bieler, Benedikt Friemert, Robert Schwab, Erwin Kollig, Christoph Güsgen
BACKGROUND: When gunshot and blast injuries affect only a single person, first aid can always be delivered in conformity with the relevant guidelines. In contrast, when there is a dynamic casualty situation affecting many persons, such as after a terrorist attack, treatment may need to be focused on immediately life-threatening complications. METHODS: This review is based on pertinent publications retrieved by a selective search in Medline and on the authors' clinical experience...
April 7, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28438658/antioxidants-reduce-neurodegeneration-and-accumulation-of-pathologic-tau-proteins-in-the-auditory-system-after-blast-exposure
#16
Xiaoping Du, Matthew B West, Qunfeng Cai, Weihua Cheng, Donald L Ewert, Wei Li, Robert A Floyd, Richard D Kopke
Cochlear neurodegeneration commonly accompanies hair cell loss resulting from aging, ototoxicity, or exposures to intense noise or blast overpressures. However, the precise pathophysiological mechanisms that drive this degenerative response have not been fully elucidated. Our laboratory previously demonstrated that non-transgenic rats exposed to blast overpressures exhibited marked somatic accumulation of neurotoxic variants of the microtubule-associated protein, Tau, in the hippocampus. In the present study, we extended these analyses to examine neurodegeneration and pathologic Tau accumulation in the auditory system in response to blast exposure and evaluated the potential therapeutic efficacy of antioxidants on short-circuiting this pathological process...
April 22, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28424745/distinguishing-the-unique-neuropathological-profile-of-blast-polytrauma
#17
W Brad Hubbard, Shaylen Greenberg, Carly Norris, Joseph Eck, Erin Lavik, Pamela VandeVord
Traumatic brain injury sustained after blast exposure (blast-induced TBI) has recently been documented as a growing issue for military personnel. Incidence of injury to organs such as the lungs has decreased, though current epidemiology still causes a great public health burden. In addition, unprotected civilians sustain primary blast lung injury (PBLI) at alarming rates. Often, mild-to-moderate cases of PBLI are survivable with medical intervention, which creates a growing population of survivors of blast-induced polytrauma (BPT) with symptoms from blast-induced mild TBI (mTBI)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28422897/outcomes-associated-with-blast-versus-nonblast-related-traumatic-brain-injury-in-us-military-service-members-and-veterans-a-systematic-review
#18
Nancy Greer, Nina Sayer, Eva Koeller, Tina Velasquez, Timothy J Wilt
OBJECTIVES: To systematically review the literature on comparative clinical and functional outcomes following blast-related versus nonblast-related traumatic brain injury (TBI) among US service members and Veterans. DESIGN: MEDLINE search (January 2001 to June 2016) supplemented with hand search of reference lists and input from peer reviewers. RESULTS: Thirty-one studies (in 33 articles) reported on health outcomes; only 2 were rated low risk of bias...
April 18, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28419850/overpressure-blast-injury-induced-oxidative-stress-and-neuroinflammation-response-in-rat-frontal-cortex-and-cerebellum
#19
Hale Z Toklu, Zhihui Yang, Sehkar Oktay, Yasemin Sakarya, Nataliya Kirichenko, Michael K Matheny, Judy Muller-Delp, Kevin Strang, Philip J Scarpace, Kevin K W Wang, Nihal Tümer
BACKGROUND & AIM: Overpressure blast-wave induced brain injury (OBI) and its long-term neurological outcome pose significant concerns for military personnel. Our aim is to investigate the mechanism of injury due to OBI. METHODS: Rats were divided into 3 groups: (1) Control, (2) OBI (exposed 30psi peak pressure, 2-2.5ms), (3) Repeated OBI (r-OBI) (three exposures over one-week period). Lung and brain (cortex and cerebellum) tissues were collected at 24h post injury...
April 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28403239/simulated-blast-overpressure-induces-specific-astrocyte-injury-in-an-ex-vivo-brain-slice-model
#20
Saranya Canchi, Malisa Sarntinoranont, Yu Hong, Jeremy J Flint, Ghatu Subhash, Michael A King
Exposure to explosive blasts can produce functional debilitation in the absence of brain pathology detectable at the scale of current diagnostic imaging. Transient (ms) overpressure components of the primary blast wave are considered to be potentially damaging to the brain. Astrocytes participate in neuronal metabolic maintenance, blood-brain barrier, regulation of homeostatic environment, and tissue remodeling. Damage to astrocytes via direct physical forces has the potential to disrupt local and global functioning of neuronal tissue...
2017: PloS One
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