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https://www.readbyqxmd.com/read/28632138/monitoring-lung-contusion-in-a-porcine-polytrauma-model-using-eit-an-application-study
#1
Susana Aguiar Santos, Carlos Castelar Wembers, Klemens Horst, Roman Pfeifer, Tim-Philipp Simon, Hans-Christoph Pape, Frank Hildebrand, Michael Czaplik, Steffen Leonhardt, Daniel Teichmann
Lung contusion is the most common lung injury following blunt chest trauma which, in turn, is associated with high mortality rates (Gavelli et al., 2002). Lung contusion is characterized by hemorrhage and edema with consecutively reduced compliance. In this study, unilateral lung contusion and other traumata were induced in 12 pigs by using a bolt gun machine. To investigate the pathophysiological consequences of lung contusion, information on clinical parameters was collected and monitored regularly while animals were additionally monitored with electrical impedance tomography (EIT) before trauma, and at 4, 24, 48 and 72 h after polytrauma...
June 20, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28632137/electrospun-silk-polyaniline-conduits-for-functional-nerve-regeneration-in-rat-sciatic-nerve-injury-model
#2
Suradip Das, Manav Sharma, Dhiren Saharia, Kushal Sarma, Elizabeth Muir, Utpal Bora
The present study describes the fabrication of polyaniline-silk fibroin nanocomposite based nerve conduits and its subsequent implantation in a rat sciatic nerve injury model for peripheral nerve regeneration. This is the first in vivo study of polyaniline based nerve conduit describing the safety and efficacy of the conduits in treating peripheral nerve injuries. The nanocomposite was synthesised by electrospinning a mixture of silk fibroin protein and polyaniline wherein the silk nanofibers were observed to be uniformly coated with polyaniline nanoparticles...
June 20, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28631619/modeling-trans-spinal-direct-current-stimulation-for-the-modulation-of-the-lumbar-spinal-motor-pathways
#3
Alexander Kuck, Dick Stegeman, Edwin van Asseldonk
OBJECTIVE: Trans-spinal direct current stimulation (tsDCS) is a potential new technique for the treatment of spinal cord injury (SCI). TsDCS aims to facilitate plastic changes in the neural pathways of the spinal cord with a positive effect on SCI recovery. To establish tsDCS as a possible treatment option for SCI, it is essential to gain a better understanding of its cause and effects. We seek to understand the acute effect of tsDCS, including the generated electric field (EF) and its polarization effect on the spinal circuits, to determine a cellular target...
June 20, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28629678/history-of-electromyography-and-nerve-conduction-studies-a-tribute-to-the-founding-fathers
#4
REVIEW
Mohamed Kazamel, Paula Province Warren
The early development of nerve conduction studies (NCS) and electromyography (EMG) was linked to the discovery of electricity. This relationship had been concluded by observing the effect of applying electricity to the body of an animal and discovering that nerves and muscles themselves could produce electricity. We attempt to review the historical evolution of NCS and EMG over the last three centuries by reviewing the landmark publications of Galvani, Adrian, Denny-Brown, Larrabee, and Lambert. In 1771, Galvani showed that electrical stimulation of animal muscle tissue produced contraction and, thereby, the concept of animal electricity was born...
June 16, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28628551/a-clinical-framework-for-functional-recovery-in-a-person-with-chronic-traumatic-brain-injury-a-case-study
#5
Karen McCain, Staci Shearin
BACKGROUND AND PURPOSE: This case study describes a task-specific training program for gait walking and functional recovery in a young man with severe chronic traumatic brain injury. CASE DESCRIPTION: The individual was a 26-year-old man 4 years post-traumatic brain injury with severe motor impairments who had not walked outside of therapy since his injury. He had received extensive gait training prior to initiation of services. His goal was to recover the ability to walk...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28626156/a-method-to-establish-a-mouse-model-of-bone-marrow-microenvironment-injury
#6
Wenzhe Cheng, Quanhu Ge, Longfei Wan, Xiaoyi Wang, Xueling Chen, Xiangwei Wu
A normal bone marrow microenvironment plays a very important role in the normal functioning of hematopoietic stem cells. Once disturbed, this microenvironment can become favorable for the occurrence of blood disorders, cancers, and other diseases. Therefore, further studies on the bone marrow microenvironment should be performed to reveal regulatory and stem cell fate determination mechanisms and promote the development of bone marrow transplantation, tissue repair and regenerative medicine, and other fields...
June 13, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28625244/-establishment-of-porcine-model-of-prolonged-cardiac-arrest-and-cardiopulmonary-resuscitation-electrically-induced-by-ventricular-fibrillation
#7
Cai Wen, Heng Li, Xiaozhu Zhai, Youde Ding, Huatao Zhou, Zhiming Ouyang, Zhengfei Yang, Longyuan Jiang, Wanchun Tang, Tao Yu
OBJECTIVE: To investigate the optimal injury time point of cardiac arrest (CA) induced electrically, and establish a reproducible prolonged CA and cardiopulmonary resuscitation (CPR) model in pigs. METHODS: Forty healthy domestic male pigs were randomly divided into four groups, which were ventricular fibrillation (VF) 8, 10, 11, and 12 minutes groups, each group for 10 animals. In these groups, VF was induced by alternating current delivered to right ventricular endocardium and untreated for 8, 10, 11, and 12 minutes, respectively, followed by 6 minutes of CPR procedure...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624941/does-static-electric-field-from-ultra-high-voltage-direct-current-transmission-lines-affect-male-reproductive-capacity-evidence-from-a-laboratory-study-on-male-mice
#8
Sixia Wu, Guoqing Di, Zhengguang Li
With the development of ultra-high-voltage direct-current (UHVDC) transmission technology and increase in transmission voltage, the issue of environmental static electric field (SEF) pollution is standing out and its possible health effects have caused much public attention. In this study, the effects of chronic exposure to SEF on reproductive capacity of male mice were investigated. Twenty Institute of Cancer Research (ICR) mice were exposed to SEF (56.3 ± 1.4 kV/m, 49 days) generated by a high-voltage device...
June 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28624042/wound-management-and-outcome-of-595-electrical-burns-in-a-major-burn-center
#9
Haisheng Li, Jianglin Tan, Junyi Zhou, Zhiqiang Yuan, Jiaping Zhang, Yizhi Peng, Jun Wu, Gaoxing Luo
BACKGROUND: Electrical burns are important causes of trauma worldwide. This study aims to analyze the clinical characteristics, wound management, and outcome of electric burns. METHODS: This retrospective study was performed at the Institute of Burn Research of the Third Military Medical University during 2013-2015. Data including the demographics, injury patterns, wound treatment, and outcomes were collected and analyzed. RESULTS: A total of 595 electrical burn patients (93...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28616016/neurological-and-neuropsychological-consequences-of-electrical-and-lightning-shock-review-and-theories-of-causation
#10
REVIEW
Christopher J Andrews, Andrew D Reisner
Injuries from lightning and electrical injuries involve multiple systems of the body, however neurological symptoms are very widely reported. A disabling neuropsychological syndrome is also noted. This paper presents a comprehensive review of neurological and neuropsychological symptoms. Partial theories of causation for these injuries have been advanced, however, there is no convincing explanation for both delay in onset of symptoms and also the genesis of the neuropsychological syndrome. A theory of causation is proposed which satisfies both these constraints...
May 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28615820/from-wheelchair-to-walking-first-case-report-of-post-electrical-burn-destruction-of-patellar-ligament-with-its-one-stage-reconstruction-and-restoration-of-function
#11
Sandip Kanti Basu, Jayanta Bain, Bijay Kumar Majumdar, Debarati Chattopadhyay, Debasis Baitalik, Yatindra Kumar Dewangan, Debtanu Bhattacharya, Pritha Rakshit, Vivek Gupta, Ashwani Kumar, Rathindra Nath Haldar
Electrical burn injury causing bilateral patellar ligament destruction leading to complete loss of knee extension is a very rare injury. In such situation, surgical repair or reconstruction of the patellar ligament becomes necessary to restore knee functions. Here, we present such a case of an 8-year-old boy, whose both patellar ligaments were destroyed throughout its length due to high-voltage electrical injury. His left knee joint cavity was exposed and grossly infected, but the right knee joint cavity was apparently intact...
January 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28611425/pancreatic-adenocarcinoma-response-to-chemotherapy-enhanced-with-non-invasive-radio-frequency-evaluated-via-an-integrated-experimental-computational-approach
#12
Matthew J Ware, Louis T Curtis, Min Wu, Jason C Ho, Stuart J Corr, Steven A Curley, Biana Godin, Hermann B Frieboes
Although chemotherapy combined with radiofrequency exposure has shown promise in cancer treatment by coupling drug cytotoxicity with thermal ablation or thermally-induced cytotoxicity, limited access of the drug to tumor loci in hypo-vascularized lesions has hampered clinical application. We recently showed that high-intensity short-wave capacitively coupled radiofrequency (RF) electric-fields may reach inaccessible targets in vivo. This non-invasive RF combined with gemcitabine (Gem) chemotherapy enhanced drug uptake and effect in pancreatic adenocarcinoma (PDAC), notorious for having poor response and limited therapeutic options, but without inducing thermal injury...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606109/neurophysiological-assessment-of-spinal-cord-injuries-in-dogs-using-somatosensory-and-motor-evoked-potentials
#13
REVIEW
Maria Claudia Campos Mello Inglez de Souza, Ricardo José Rodriguez Ferreira, Geni Cristina Fonseca Patricio, Julia Maria Matera
Somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) are non-invasive neurophysiological tests that reflect the functional integrity of sensory and motor pathways. Despite their extensive use and description in human medicine, reports in veterinary medicine are scarce. SSEPs are obtained via peripheral stimulation of sensory or mixed nerves; stimulation induces spinal and cortical responses, which are recorded when sensory pathways integrity is preserved. MEPs can be obtained via transcranial electrical or magnetic stimulation; in this case, thoracic and pelvic limb muscle responses are captured if motor pathways are preserved...
June 12, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28605376/anatomically-inspired-three-dimensional-micro-tissue-engineered-neural-networks-for-nervous-system-reconstruction-modulation-and-modeling
#14
Laura A Struzyna, Dayo O Adewole, Wisberty J Gordián-Vélez, Michael R Grovola, Justin C Burrell, Kritika S Katiyar, Dmitriy Petrov, James P Harris, D Kacy Cullen
Functional recovery rarely occurs following injury or disease-induced degeneration within the central nervous system (CNS) due to the inhibitory environment and the limited capacity for neurogenesis. We are developing a strategy to simultaneously address neuronal and axonal pathway loss within the damaged CNS. This manuscript presents the fabrication protocol for micro-tissue engineered neural networks (micro-TENNs), implantable constructs consisting of neurons and aligned axonal tracts spanning the extracellular matrix (ECM) lumen of a preformed hydrogel cylinder hundreds of microns in diameter that may extend centimeters in length...
May 31, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28605373/modeling-fast-scan-cyclic-voltammetry-data-from-electrically-stimulated-dopamine-neurotransmission-data-using-qnsim1-0
#15
Rashed Harun, Christine M Grassi, Miranda J Munoz, Amy K Wagner
Central dopaminergic (DAergic) pathways have an important role in a wide range of functions, such as attention, motivation, and movement. Dopamine (DA) is implicated in diseases and disorders including attention deficit hyperactivity disorder, Parkinson's disease, and traumatic brain injury. Thus, DA neurotransmission and the methods to study it are of intense scientific interest. In vivo fast-scan cyclic voltammetry (FSCV) is a method that allows for selectively monitoring DA concentration changes with fine temporal and spatial resolution...
June 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28605134/impact-of-direct-epispinal-stimulation-on-bladder-and-bowel-functions-in-pigs-a-feasibility-study
#16
Thomas Guiho, Claire Delleci, Christine Azevedo-Coste, Charles Fattal, David Guiraud, Jean-Rodolphe Vignes, Luc Bauchet
AIMS: This study assesses the potential of epispinal (subdural) stimulation application in the treatment of urinary and bowel neurological disorders. Acute experiments were performed on a large animal model - the domestic pig - to develop a new methodology facilitating future results and technology transfers to human. METHODS: After rectal and bladder catheterization, four Landrace pigs (45-50 kg) underwent spinal cord surgery - that is, lumbosacral incision, laminectomy [L4-S4], dural opening and microsurgical arachnoid dissection...
June 12, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28599608/a-brain-electrical-activity-eeg-based-biomarker-of-functional-impairment-in-traumatic-head-injury-a-multisite-validation-trial
#17
Daniel Hanley, Leslie S Prichep, Neeraj Badjatia, Jeff Bazarian, RIchard P Chiacchierini, Kenneth C Curley, John S Garrett, Elizabeth B Jones, Rosanne Naunheim, Brian J O'Neil, John O'Neill, Wright David, J Stephen Huff
The potential clinical utility of a novel quantitative EEG-based Brain Function Index (BFI) as a measure of the presence and severity of functional brain injury was studied as part of an independent prospective validation trial. The BFI was derived using EEG features associated with functional brain impairment reflecting current consensus on the physiology of concussive injury. 720 adult patients (18-85 years) evaluated within 72 hours of sustaining a closed head injury were enrolled at 11 US Emergency Departments...
June 9, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28592841/lipopolysaccharides-induced-inflammatory-responses-and-electrophysiological-dysfunctions-in-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#18
Gökhan Yücel, Zhihan Zhao, Ibrahim El-Battrawy, Huan Lan, Siegfried Lang, Xin Li, Fanis Buljubasic, Wolfram-Hubertus Zimmermann, Lukas Cyganek, Jochen Utikal, Ursula Ravens, Thomas Wieland, Martin Borggrefe, Xiao-Bo Zhou, Ibrahim Akin
Severe infections like sepsis lead frequently to cardiomyopathy. The mechanisms are unclear and an optimal therapy for septic cardiomyopathy still lacks. The aim of this study is to establish an endotoxin-induced inflammatory model using human induced pluripotent stem cell (hiPSC) derived cardiomyocytes (hiPSC-CMs) for mechanistic and therapeutic studies. hiPSC-CMs were treated by lipopolysaccharide (LPS) in different concentrations for different times. ELISA, FACS, qPCR, and patch-clamp techniques were used for the study...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592688/validation-of-electrical-stimulation-models-intracellular-calcium-measurement-in-3-dimensional-scaffolds
#19
Robert D Adams, Brinda Gupta, Amy Beth Harkins
Peripheral nerve injury can be disabling. Regeneration is limited by the rate of axonal extension, and proximal injury to peripheral nerves can take over a year to reach target organs. Electrical stimulation (ES) has been shown to increase the rate of neurite growth, though the mechanism is not yet well understood. In our prior manuscript, we developed a computational model that demonstrates how ES can functionally elevate intracellular calcium ([Ca2+]i) based on ES intensity and duration. Here, we validate the computation model for the intracellular [Ca2+]i changes in neuron soma...
June 7, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28589215/utilities-of-scrotal-flap-for-reconstruction-of-penile-skin-defects-after-severe-burn-injury
#20
REVIEW
Le Guo, Minghua Zhang, Jizhang Zeng, Pengfei Liang, Pihong Zhang, Xiaoyuan Huang
OBJECTIVE: In the present study, we aimed to present our experience of an effective two-stage surgical approach using scrotal skin flap for patients with penile skin defects following severe burn injury. MATERIALS AND METHODS: A total of 17 patients with penile skin defects underwent scheduled two-stage reconstruction using scrotal skin flap from January 2004 to October 2016. Patients, who were selected as eligible candidates for scrotal flap, exhibited a wide range of indications, including iatrogenic injuries (e...
June 6, 2017: International Urology and Nephrology
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