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https://www.readbyqxmd.com/read/29786465/trunk-stability-enabled-by-non-invasive-spinal-electrical-stimulation-after-spinal-cord-injury
#1
Mrinal Rath, Albert H Vette, Shyamsundar Ramasubramaniam, Kun Li, Joel Burdick, Victor Reggie Edgerton, Yury Gerasimenko, Dimitry Sayenko
Electrical neuromodulation of spinal networks improves the control of movement of the paralyzed limbs after spinal cord injury (SCI). However, the potential of non-invasive spinal stimulation to facilitate postural trunk control during sitting in humans with SCI has not been investigated. We hypothesized that transcutaneous electrical stimulation of the lumbosacral enlargement can improve trunk posture. Eight participants with non-progressive SCI, C3-T9, AIS A or C, performed different motor tasks during sitting...
May 22, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29781582/sphingosine-1-phosphate-receptor-1-signaling-maintains-endothelial-cell-barrier-function-and-protects-against-immune-complex-induced-vascular-injury
#2
Nathalie Burg, Steven Swendeman, Stefan Worgall, Timothy Hla, Jane E Salmon
OBJECTIVE: Immune complex (IC) deposition activates neutrophils (PMN), increases vascular permeability and leads to organ damage in SLE and RA. The bioactive lipid sphingosine-1-phosphate (S1P), acting via S1P receptor 1 (S1P1 ), is a key regulator of endothelial cell (EC) barrier function. We hypothesized that augmenting EC integrity via S1P1 signaling would attenuate inflammatory injury mediated by ICs. METHODS: In vitro barrier function was assessed in human umbilical vein endothelial cells (HUVECs) by Electric Cell-substrate Impedance Sensing (ECIS)...
May 21, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29777277/impact-of-muscle-atrophy-on-bone-metabolism-and-bone-strength-implications-for-muscle-bone-crosstalk-with-aging-and-disuse
#3
REVIEW
T Bettis, B-J Kim, M W Hamrick
Bone fractures in older adults are often preceded by a loss of muscle mass and strength. Likewise, bone loss with prolonged bed rest, spinal cord injury, or with exposure to microgravity is also preceded by a rapid loss of muscle mass. Recent studies using animal models in the setting of hindlimb unloading or botulinum toxin (Botox) injection also reveal that muscle loss can induce bone loss. Moreover, muscle-derived factors such as irisin and leptin can inhibit bone loss with unloading, and knockout of catabolic factors in muscle such as the ubiquitin ligase Murf1 or the myokine myostatin can reduce osteoclastogenesis...
May 18, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29775658/hydroxysafflor-yellow-a-protects-brain-microvascular-endothelial-cells-against-oxygen-glucose-deprivation-reoxygenation-injury-involvement-of-inhibiting-autophagy-via-class-i-pi3k-akt-mtor-signaling-pathway
#4
Guang Yang, Ning Wang, Sai Wang Seto, Dennis Chang, Huazheng Liang
The present study aimed to test whether Hydroxysafflor yellow A (HSYA) protects the brain microvascular endothelial cells (BMECs) injury induced by oxygen glucose deprivation/reoxygenation (OGD/R) via the PI3K/Akt/mTOR autophagy signaling pathway. Primary rat BMECs were cultured and identified by the expression of factor VIII-related antigen before being exposed to OGD/R to imitate ischemia/reperfusion (I/R) damage in vitro. The protective effect of HSYA was evaluated by assessing (1) cellular morphologic and ultrastructural changes; (2) cell viability and cytotoxicity; (3) transendothelial electrical resistance (TEER) of monolayer BMECs; (4) cell apoptosis; (5) fluorescence intensity of LC3B; (6) LC3 mRNA expression; (7) protein expressions of LC3, Beclin-1, Zonula occludens-1 (ZO-1), phospho-Akt (p-Akt), Akt, phospho-mTOR (p-mTOR) and mTOR...
May 15, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29774073/polypyrrole-chitosan-conductive-biomaterial-synchronizes-cardiomyocyte-contraction-and-improves-myocardial-electrical-impulse-propagation
#5
Zhi Cui, Nathan C Ni, Jun Wu, Guo-Qing Du, Sheng He, Terrence M Yau, Richard D Weisel, Hsing-Wen Sung, Ren-Ke Li
Background: The post-myocardial infarction (MI) scar interrupts electrical impulse propagation and delays regional contraction, which contributes to ventricular dysfunction. We investigated the potential of an injectable conductive biomaterial to restore scar tissue conductivity and re-establish synchronous ventricular contraction. Methods: A conductive biomaterial was generated by conjugating conductive polypyrrole (PPY) onto chitosan (CHI) backbones. Trypan blue staining of neonatal rat cardiomyocytes (CMs) cultured on biomaterials was used to evaluate the biocompatibility of the conductive biomaterials...
2018: Theranostics
https://www.readbyqxmd.com/read/29772187/platelet-rich-plasma-releasate-promotes-regeneration-and-decreases-inflammation-and-apoptosis-of-injured-skeletal-muscle
#6
Wen-Chung Tsai, Tung-Yang Yu, Gwo-Jyh Chang, Li-Ping Lin, Miao-Sui Lin, Jong-Hwei S Pang
BACKGROUND: Platelet-rich plasma (PRP) contains various cytokines and growth factors that may be beneficial to the healing process of injured muscle. Based on the authors' previous study, PRP releasate can promote proliferation and migration of skeletal muscle cells in vitro, so animal studies are performed to support the use of PRP to treat muscle injury in vivo. PURPOSE: To investigate the effect of PRP releasate on regeneration of injured muscle, as well as its effect on inflammatory reaction and cell apoptosis, in the early stages of the muscle-healing process...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29770161/numerical-investigation-on-head-and-brain-injuries-caused-by-windshield-impact-on-riders-using-electric-self-balancing-scooters
#7
Shi Shang, Yanting Zheng, Ming Shen, Xianfeng Yang, Jun Xu
To investigate head-brain injuries caused by windshield impact on riders using electric self-balancing scooters (ESS). Numerical vehicle ESS crash scenarios are constructed by combining the finite element (FE) vehicle model and multibody scooter/rider models. Impact kinematic postures of the head-windshield contact under various impact conditions are captured. Then, the processes during head-windshield contact are reconstructed using validated FE head/laminated windshield models to assess the severity of brain injury caused by the head-windshield contact...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29768578/-work-accidents-and-automatic-circuit-reclosers-in-the-electricity-sector-beyond-the-immediate-causes
#8
Alessandro Jose Nunes da Silva, Ildeberto Muniz de Almeida, Rodolfo Andrade de Gouveia Vilela, Renata Wey Berti Mendes, Sandra Lorena Beltran Hurtado
The Brazilian electricity sector has recorded high work-related mortality rates that have been associated with outsourcing, used to cut costs. In order to decrease the power outage time for consumers, the industry adopted the automatic circuit recloser as the technical solution. The device has hazardous implications for maintenance workers. The aim of this study was to analyze the origins and consequences of work accidents in power systems with automatic circuit recloser, using the Accident Analysis and Prevention (AAP) model...
May 10, 2018: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/29767734/electrical-burns-and-late-spontaneous-artery-ruptures-about-three-cases
#9
C Reinbold, K Serror, M Mimoun, M Chaouat, O Marco, D Boccara
Electrical burns are responsible for arterial and venous thrombosis, as well as weakening of the arteries. Immediate or delayed arterial occlusions, secondary to the aggression of the intima, or aneurysms, secondary to the aggression of the media, sometimes lead to artery ruptures without any warning signs. Such ruptures may trigger a hemorrhagic shock whose period of onset is variable and unpredictable. We are presenting here three cases treated in our department for electrical burns, whose complications were marked by hemorrhagic shock, secondary to late artery ruptures, sometimes occurring several months following the event...
May 15, 2018: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/29763367/hsp70-protects-rats-and-hippocampal-neurons-from-central-nervous-system-oxygen-toxicity-by-suppression-of-no-production-and-nf-%C3%AE%C2%BAb-activation
#10
Hongjie Yi, Guoyang Huang, Kun Zhang, Shulin Liu, Weigang Xu
During diving, central nervous system oxygen toxicity may cause drowning or barotrauma, which has dramatically limited the working benefits of hyperbaric oxygen in underwater operations and clinical applications. The aim of this study is to understand the effects and the underlying mechanism of heat shock protein 70 on central nervous system oxygen toxicity and its mechanisms in vivo and in vitro. Rats were given geranylgeranylacetone (800 mg/kg) orally to induce hippocampal expression of heat shock protein 70 and then treated with hyperbaric oxygen...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29762440/reconstruction-of-extensive-post-electric-burn-scalp-defects-with-exposed-bones-a-study-of-12-cases
#11
Periakaruppan Jeyakumar, Alia T Hussain, Ashik R Ahamed
The scalp is a unique part of the human body with respect to its shape and position. It is the part of the body that is usually exposed in its original form, with no covering by any means of clothing. In workplaces, especially in the electrical industry in the area of electrical substations and power transmission lines it is this part of the body that can easily come in contact with high tension electrical wires. Others who can be prone to suffer such injuries are pedestrians, people working on heights, ladies hanging clothes on terraces...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29762325/endoscopy-assisted-frontal-sinus-obliteration
#12
Anna Maria Jaźwiec, Benjamin Rechner, Ewa Komorowska-Timek
Comminuted fractures of the anterior table of the frontal sinus involving frontonasal ducts are traditionally treated with sinus obliteration. This technique entails precise mucosa removal which requires unimpeded visualization of the bony recesses. To achieve adequate access to the mucosa, temporary removal of a large part of the frontal bone may often be necessary. This in turn increases fracture comminution requiring placement of additional hardware associated with the risk for bony malalignment, infection, plate palpability, and visibility, especially in thin-skin individuals...
May 14, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29760854/peritoneal-dialysis-in-austere-environments-an-emergent-approach-to-renal-failure-management
#13
REVIEW
Chad Gorbatkin, John Bass, Fredric O Finkelstein, Steven M Gorbatkin
Peritoneal dialysis (PD) is a means of renal replacement therapy (RRT) that can be performed in remote settings with limited resources, including regions that lack electrical power. PD is a mainstay of end-stage renal disease (ESRD) therapy worldwide, and the ease of initiation and maintenance has enabled it to flourish in both resource-limited and resource-abundant settings. In natural disaster scenarios, military conflicts, and other austere areas, PD may be the only available life-saving measure for acute kidney injury (AKI) or ESRD...
May 2018: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29756600/the-development-of-neural-stimulators-a-review-of-preclinical-safety-and-efficacy-studies
#14
Robert K Shepherd, Joel Villalobos, Owen Burns, David Nayagam
OBJECTIVE: Given the rapid expansion of the field of neural stimulation and the rigorous regulatory approval requirements required before these devices can be applied clinically, it is important that there is clarity around conducting preclinical safety and efficacy studies required for the development of this technology. APPROACH: The present review examines basic design principles associated with the development of a safe neural stimulator and describes the suite of preclinical safety studies that need to be considered when taking a device to clinical trial...
May 14, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29754008/vascular-endothelial-injury-in-severe-fever-with-thrombocytopenia-syndrome-caused-by-the-novel-bunyavirus
#15
Xiao-Kun Li, Shao-Fei Zhang, Wen Xu, Bo Xing, Qing-Bin Lu, Pan-He Zhang, Hao Li, Li Zhang, Wen-Cong Zhang, Wei-Wei Chen, Wu-Chun Cao, Wei Liu
Severe fever with thrombocytopenia syndrome virus (SFTSV) infection typically causes acute fever, thrombocytopenia and leucopenia, presenting with a high case fatality rate. The pathogenesis of SFTSV infection, however, is not well described. It was hypothesized that endothelial dysfunction might play part in the disease process. In current study, we retrospectively analyzed the clinical manifestations among a large group of confirmed SFTS cases and found evidence of plasma leakage and vascular endothelial injury...
May 10, 2018: Virology
https://www.readbyqxmd.com/read/29752242/automated-fes-for-upper-limb-rehabilitation-following-stroke-and-spinal-cord-injury
#16
Edmund F Hodkin, Yuming Lei, Jonathan Humby, Isabel S Glover, Supriyo Choudhury, Hrishikesh Kumar, Monica A Perez, Helen Rodgers, Andrew Jackson
Neurorehabilitation aims to induce beneficial neural plasticity in order to restore function following injury to the nervous system. There is an increasing evidence that appropriately timed functional electrical stimulation (FES) can promote associative plasticity, but the dosage is critical for lasting functional benefits. Here, we present a novel approach to closed-loop control of muscle stimulation for the rehabilitation of reach-to-grasp movements following stroke and spinal cord injury (SCI). We developed a simple, low-cost device to deliver assistive stimulation contingent on users' self-initiated movements...
May 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29746991/electrical-synapses-are-involved-in-orofacial-neuropathic-pain
#17
Omar Ouachikh, Aziz Hafidi, Yves Boucher, Wisam Dieb
Accumulated evidences suggest important roles of glial GAP-junctions in pain. However, only a few studies have explored the role of neuronal GAP-junctions or electrical synapses in neuropathic pain (NP). Therefore, the present study explores the role of connexin 36 (Cx36) in NP using the chronic constriction injury of the infraorbital nerve (CCI-IoN) model in rat. A significant increase in Cx36 labeling was observed in the medullary dorsal horn (MDH) of CCI-IoN-lesioned compared to sham rats. The expression of Cx36 in CCI-IoN-lesioned rats revealed a rostroventral gradient of punctuate labeling within lamina IIo of the MDH...
May 7, 2018: Neuroscience
https://www.readbyqxmd.com/read/29744111/risk-factors-of-fatal-occupational-accidents-in-iran
#18
Hadi Asady, Mehdi Yaseri, Mostafa Hosseini, Morvarid Zarif-Yeganeh, Mahmoud Yousefifard, Mahin Haghshenas, Parisa Hajizadeh-Moghadam
Background: Occupational accidents are of most important consequences of globalization in developing countries. Therefore, investigating the causes of occupational accidents for improving the job situation and making operational policy is necessary. So the aim of this study was to investigate factors affecting the fatal occupational accidents and also calculate the years of life lost for dead workers. Methods: This cross-sectional study was conducted on data related to the 6052 injured workers that was registered in the 2013 registry system of the Ministry of Health and Medical Education of Iran...
2018: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29742212/accidental-strangulation-in-children-by-the-automatic-closing-of-a-car-window
#19
Kailene Serena, Jefferson Pedro Piva, Cinara Andreolio, Paulo Roberto Antonacci Carvalho, Tais Sica da Rocha
Among the main causes of death in our country are car accidents, drowning and accidental burns. Strangulation is a potentially fatal injury and an important cause of homicide and suicide among adults and adolescents. In children, its occurrence is usually accidental. However, in recent years, several cases of accidental strangulation in children around the world have been reported. A 2-year-old male patient was strangled in a car window. The patient was admitted to the pediatric intensive care unit with a Glasgow Coma Scale score of 8 and presented with progressive worsening of respiratory dysfunction and torpor...
March 2018: Revista Brasileira de Terapia Intensiva
https://www.readbyqxmd.com/read/29733311/cavernous-nerve-stimulation-and-recording-of-intracavernous-pressure-in-a-rat
#20
Morten Hox, Travis Mann-Gow, Lars Lund, Peter Zvara
The stimulation of the cavernous nerve (CN) and measurement of intracavernous pressure (ICP) have been used extensively to test and evaluate therapies for erectile dysfunction. However, the methods used vary between laboratories, and pitfalls still exist. The goal of this study was to describe a surgical technique that would provide a reliable and reproducible model. By exposing the ischiocavernosus muscle at its point of insertion on the ischial tuberosity, the penile crus could be cannulated with minimal dissection and injury to the structures involved in erectile function...
April 23, 2018: Journal of Visualized Experiments: JoVE
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