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https://www.readbyqxmd.com/read/28235897/neto2-assembles-with-kainate-receptors-in-drg-neurons-during-development-and-modulates-neurite-outgrowth-in-adult-sensory-neurons
#1
Claire G Vernon, Geoffrey T Swanson
Peripheral sensory neurons in the dorsal root ganglia (DRG) are the initial transducers of sensory stimuli, including painful stimuli, from the periphery to central sensory and pain-processing centers. Small- to medium-diameter non-peptidergic neurons in the neonatal DRG express functional kainate receptors (KARs), one of three sub-families of ionotropic glutamate receptors, as well as the putative KAR auxiliary subunit Neto2. Neto2 markedly alters recombinant KAR function but has yet to be confirmed as an auxiliary subunit that assembles with and alters function of endogenous KARs...
February 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28228303/impact-of-very-high-pressure-stent-deployment-on-angiographic-and-long-term-clinical-outcomes-in-true-coronary-bifurcation-lesions-treated-by-the-mini-crush-stent-technique-a-single-center-experience
#2
Antoine Gerbay, Jeremy Terreaux, Alexis Cerisier, Marco Vola, Karl Isaaz
BACKGROUND: Percutaneous coronary intervention (PCI) for bifurcation lesions (BL) using 2 stents technique is known to be associated with high rates of procedural failure especially on the side branch (SB) mainly due to stent incomplete apposition. Stent deployment at very high pressure (SDHP) may lead to better stent expansion and apposition. However, SDHP may also be at the origin of deeper wall injury resulting into major cardiac adverse events. No data are available on evaluation of SDHP in BL treated by a mini-crush stent technique...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28228060/resuscitation-with-lyophilized-plasma-is-safe-and-improves-neurologic-recovery-in-a-long-term-survival-model-of-swine-subjected-to-traumatic-brain-injury-hemorrhagic-shock-and-polytrauma
#3
Patrick E Georgoff, Vahagn C Nikolian, Ihab Halaweish, Kiril Chtraklin, Peter J Bruhn, Hassan Eidy, Monica Rasmussen, Yongqing Li, Ashok Srinivasan, Hasan B Alam
We have previously shown that fresh frozen plasma (FFP) and lyophilized plasma decrease brain lesion size and improve neurologic recovery in a swine model of traumatic brain injury (TBI) and hemorrhagic shock (HS). In this study, we examine whether these findings can be validated in a clinically relevant model of severe TBI, HS, and polytrauma. Female Yorkshire swine were subjected to TBI (controlled cortical impact), hemorrhage (40% volume), grade III liver and splenic injuries, rib fracture, and rectus abdominis crush...
February 22, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28215880/adenovirus-vector-mediated-ex-vivo-gene-transfer-of-brain-derived-neurotrophic-factor-bdnf-tohuman-umbilical-cord-blood-derived-mesenchymal-stem-cells-ucb-mscs-promotescrush-injured-rat-sciatic-nerve-regeneration
#4
Wei-Hong Hei, Akram A Almansoori, Mi-Ae Sung, Kyung-Won Ju, Nari Seo, Sung-Ho Lee, Bong-Ju Kim, Soung-Min Kim, Jeong Won Jahng, Hong He, Jong-Ho Lee
This study was designed toinvestigate the efficacy of adenovirus vector-mediated brain-derived neurotrophic factor (BDNF) ex vivo gene transfer to human umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs) in a rat sciatic nerve crush injury model. BDNF protein and mRNA expression after infection was checked through an enzyme-linked immunosorbent assay (ELISA) and quantitative real-time polymerase chain reaction (qRT-PCR). Male Sprague-Dawley rats (200-250g, 6 weeks old) were distributed into threegroups (n=20 each): the control group, UCB-MSC group, and BDNF-adenovirus infected UCB-MSC (BDNF-Ad+UCB-MSC) group...
February 13, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28206686/nte-pnpla6-is-expressed-in-mature-schwann-cells-and-is-required-for-glial-ensheathment-of-remak-fibers
#5
Janis McFerrin, Bruce L Patton, Elizabeth R Sunderhaus, Doris Kretzschmar
Neuropathy target esterase (NTE) or patatin-like phospholipase domain containing 6 (PNPLA6) was first linked with a neuropathy occurring after organophosphate poisoning and was later also found to cause complex syndromes when mutated, which can include mental retardation, spastic paraplegia, ataxia, and blindness. NTE/PNPLA6 is widely expressed in neurons but experiments with its Drosophila orthologue Swiss-cheese (SWS) suggested that it may also have glial functions. Investigating whether NTE/PNPLA6 is expressed in glia, we found that NTE/PNPLA6 is expressed by Schwann cells in the sciatic nerve of adult mice with the most prominent expression in nonmyelinating Schwann cells...
February 16, 2017: Glia
https://www.readbyqxmd.com/read/28197201/-three-methods-and-three-points-regulates-p38-mitogen-activated-protein-kinase-in-the-dorsal-horn-of-the-spinal-cord-in-a-rat-model-of-sciatic-nerve-injury
#6
Xin Guo, Tian-Yuan Yu, Wong Steven, Wen-Duan Jia, Chi Ma, Yan-Hong Tao, Chao Yang, Tao-Tao Lv, Shuai Wu, Meng-Qian Lu, Jia-Li Liu
Tuina is a traditional Chinese treatment for sensory disturbances caused by peripheral nerve injury and related diseases. Our previous studies showed that tuina regulates relevant regions and indices of the spinal dorsal horn using the Dian, Bo, and Rou method in Yinmen (BL37), Yanglingquan (GB34), and Weizhong (BL40). Treatment prevents muscle atrophy, protects spinal cord neurons, and promotes sciatic nerve repair. The mechanisms of action of tuina for treating peripheral nerve injury remain poorly understood...
December 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/28192079/electrical-neuromodulation-of-the-cervical-spinal-cord-facilitates-forelimb-skilled-function-recovery-in-spinal-cord-injured-rats
#7
Monzurul Alam, Guillermo Garcia-Alias, Benita Jin, Jonathan Keyes, Hui Zhong, Roland R Roy, Yury Gerasimenko, Daniel C Lu, V Reggie Edgerton
Enabling motor control by epidural electrical stimulation of the spinal cord is a promising therapeutic technique for the recovery of motor function after a spinal cord injury (SCI). Although epidural electrical stimulation has resulted in improvement in hindlimb motor function, it is unknown whether it has any therapeutic benefit for improving forelimb fine motor function after a cervical SCI. We tested whether trains of pulses delivered at spinal cord segments C6 and C8 would facilitate the recovery of forelimb fine motor control after a cervical SCI in rats...
February 10, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28191764/neural-progenitor-like-cells-induced-from-human-gingiva-derived-mesenchymal-stem-cells-regulate-myelination-of-schwann-cells-in-rat-sciatic-nerve-regeneration
#8
Qunzhou Zhang, Phuong Nguyen, Qilin Xu, Wonse Park, Sumin Lee, Akihiro Furuhashi, Anh D Le
Regeneration of peripheral nerve injury remains a major clinical challenge. Recently, mesenchymal stem cells (MSCs) have been considered as potential candidates for peripheral nerve regeneration; however, the underlying mechanisms remain elusive. Here, we show that human gingiva-derived MSCs (GMSCs) could be directly induced into multipotent NPCs (iNPCs) under minimally manipulated conditions without the introduction of exogenous genes. Using a crush-injury model of rat sciatic nerve, we demonstrate that GMSCs transplanted to the injury site could differentiate into neuronal cells, whereas iNPCs could differentiate into both neuronal and Schwann cells...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28185662/alphab-crystallin-expression-correlates-with-aging-deficits-in-the-peripheral-nervous-system
#9
Erin-Mai F Lim, Alim Musa, Ariana Frederick, Shalina S Ousman
In an effort to identify factors that contribute to age-related deficits in the undamaged and injured peripheral nervous system (PNS), we noted that Brady and colleagues found that mice null for a small heat shock protein called alphaB-crystallin (αBC) developed abnormalities early in life that are reminiscent of aging pathologies. Because of our observation that αBC protein levels markedly reduce as wild-type mice age, we investigated whether the crystallin plays a role in modulating age-related deficits in the uninjured and damaged PNS...
January 12, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28179161/electrospun-nanofiber-sheets-incorporating-methylcobalamin-promote-nerve-regeneration-and-functional-recovery-in-a-rat-sciatic-nerve-crush-injury-model
#10
Koji Suzuki, Hiroyuki Tanaka, Mitsuhiro Ebara, Koichiro Uto, Hozo Matsuoka, Shunsuke Nishimoto, Kiyoshi Okada, Tsuyoshi Murase, Hideki Yoshikawa
: Peripheral nerve injury is one of common traumas. Although injured peripheral nerves have the capacity to regenerate, axon regeneration proceeds slowly and functional outcomes are often poor. Pharmacological enhancement of regeneration can play an important role in increasing functional recovery. In this study, we developed a novel electrospun nanofiber sheet incorporating methylcobalamin (MeCbl), one of the active forms of vitamin B12 homologues, to deliver it enough locally to the peripheral nerve injury site...
February 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28168703/erythropoietin-accelerates-functional-recovery-after-moderate-sciatic-nerve-crush-injury
#11
Michael B Geary, Haiyan Li, Alissa Zingman, John Ketz, Michael Zuscik, Karen L De Mesy Bentley, Mark Noble, John C Elfar
INTRODUCTION: Erythropoietin (EPO) has been identified as a neuroregenerative agent. We hypothesize that it may accelerate recovery after crush injury and may vary with crush severity. METHODS: Mice were randomized to mild, moderate, or severe crush of the sciatic nerve and were treated with EPO or vehicle control after injury. The sciatic function index (SFI) was monitored over the first week. Microstructural changes were analyzed by immunofluorescence for neurofilament (NF) and myelin (P0 ), and electron microscopy was used to assess ultrastructural changes...
November 7, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/28139851/betacellulin-regulates-schwann-cell-proliferation-and-myelin-formation-in-the-injured-mouse-peripheral-nerve
#12
Nicolas Vallières, Benoit Barrette, Linda Xiang Wang, Erik Bélanger, Louise Thiry, Marlon R Schneider, Mohammed Filali, Daniel Côté, Frédéric Bretzner, Steve Lacroix
When a nerve fiber is cut or crushed, the axon segment that is separated from the soma degenerates distal from the injury in a process termed Wallerian degeneration (WD). C57BL/6OlaHsd-Wld(S) (Wld(S) ) mutant mice exhibit significant delays in WD. This results in considerably delayed Schwann cell and macrophage responses and thus in impaired nerve regenerations. In our previous work, thousands of genes were screened by DNA microarrays and over 700 transcripts were found to be differentially expressed in the injured sciatic nerve of Wld(S) compared with wild-type (WT) mice...
January 31, 2017: Glia
https://www.readbyqxmd.com/read/28134789/mrpl10-and-tbp-are-suitable-reference-genes-for-peripheral-nerve-crush-injury
#13
Yaxian Wang, Qianqian Shan, Yali Meng, Jiacheng Pan, Sheng Yi
Peripheral nerve injury triggers the dysregulation of a large number of genes at multiple sites, including neurons, peripheral nerve stump, and the target organ. Housekeeping genes were frequently used as reference genes to normalize the expression values of target genes. Suitable selection of housekeeping genes that are stably expressed after nerve injury minimizes bias elicited by reference genes and thus helps to better and more sensitively reflect gene expression changes. However, many housekeeping genes have been used as reference genes without testing the expression patterns of themselves...
January 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28134070/earthquake-related-orthopedic-injuries-in-adult-population-a-systematic-review
#14
Michelangelo Bortolin, Ilaria Morelli, Amalia Voskanyan, Nina R Joyce, Gregory R Ciottone
: Introduction Earthquake-related trauma results in crush injuries and bony- and soft-tissue trauma. There are no systematic reviews analyzing the typical injury patterns and treatments in "Mega-Mass-Casualty" earthquakes. The characterization of an injury pattern specific to disaster type, be it natural or manmade, is imperative to build an effective disaster preparedness and response system. METHODS: The systematic review was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)...
January 30, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28120411/electrical-stimulation-delays-reinnervation-in-denervated-rat-muscle
#15
Clara M Pinheiro-Dardis, Bruna T Erbereli, Davilene Gigo-Benato, Paula A T S Castro, Thiago L Russo
INTRODUCTION: It is not clear if electrical stimulation (ES) can affect muscle reinnervation. This study aimed to verify if ES affects neuromuscular recovery after nerve crush injury in rats. METHODS: Denervated muscles were electrically stimulated daily for 6 or 14 days. Neuromuscular performance and excitability, and muscle morphology were determined. Muscle trophism markers (atrogin-1, MuRF-1, and myoD), as well as neuromuscular junction (NMJ) organization (MuSK, Dok-7, nAChR, and N-CAM) were assessed...
January 24, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28117356/ependymal-cell-contribution-to-scar-formation-after-spinal-cord-injury-is-minimal-local-and-dependent-on-direct-ependymal-injury
#16
Yilong Ren, Yan Ao, Timothy M O'Shea, Joshua E Burda, Alexander M Bernstein, Andrew J Brumm, Nagendran Muthusamy, H Troy Ghashghaei, S Thomas Carmichael, Liming Cheng, Michael V Sofroniew
Ependyma have been proposed as adult neural stem cells that provide the majority of newly proliferated scar-forming astrocytes that protect tissue and function after spinal cord injury (SCI). This proposal was based on small, midline stab SCI. Here, we tested the generality of this proposal by using a genetic knock-in cell fate mapping strategy in different murine SCI models. After large crush injuries across the entire spinal cord, ependyma-derived progeny remained local, did not migrate and contributed few cells of any kind and less than 2%, if any, of the total newly proliferated and molecularly confirmed scar-forming astrocytes...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28116269/mutilated-hand-due-to-sugarcane-machine-challenge-to-an-orthopaedician-case-series-of-three-patients
#17
Avijit Mahajan, Ravinder Kumar Khajuria
INTRODUCTION: Volumes have been written and practiced in relation to the crush injuries involving hands, over the decades. Mutilated hand and its treatment demands a thorough knowledge of rehabilitative techniques, and an in depth knowledge about the anatomy of hand, in order to achieve successful outcomes in its treatment. CASE PRESENTATION: We present three cases of mutilated hand due to being crushed in a sugarcane machine. All three patients were males, with the age of 14yrs, 30yrs and 34yrs respectively...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28116225/hyperbaric-oxygen-therapy-for-the-compromised-graft-or-flap
#18
REVIEW
Ashish Francis, Richard C Baynosa
Significance: Tissue grafts and flaps are used to reconstruct wounds from trauma, chronic disease, tumor extirpation, burns, and infection. Despite careful surgical planning and execution, reconstructive failure can occur due to poor wound beds, radiation, random flap necrosis, vascular insufficiency, or ischemia-reperfusion (IR). Traumatic avulsions and amputated composite tissues-compromised tissue-may fail from crush injury and excessively large sizes. While never intended, these complications result in tissue loss, additional surgery, accrued costs, and negative psychosocial patient effects...
January 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/28103314/expression-of-a-mutant-sema3a-protein-with-diminished-signalling-capacity-does-not-alter-als-related-motor-decline-or-confer-changes-in-nmj-plasticity-after-botoxa-induced-paralysis-of-male-gastrocnemic-muscle
#19
Elizabeth B Moloney, Barbara Hobo, Fred De Winter, Joost Verhaagen
Terminal Schwann cells (TSCs) are specialized cells that envelop the motor nerve terminal, and play a role in the maintenance and regeneration of neuromuscular junctions (NMJs). The chemorepulsive protein semaphorin 3A (SEMA3A) is selectively up-regulated in TSCs on fast-fatigable muscle fibers following experimental denervation of the muscle (BotoxA-induced paralysis or crush injury to the sciatic nerve) or in the motor neuron disease amyotrophic lateral sclerosis (ALS). Re-expression of SEMA3A in this subset of TSCs is thought to play a role in the selective plasticity of nerve terminals as observed in ALS and following BotoxA-induced paralysis...
2017: PloS One
https://www.readbyqxmd.com/read/28101532/overexpression-of-brain-derived-neurotrophic-factor-protects-large-retinal-ganglion-cells-after-optic-nerve-crush-in-mice
#20
Liang Feng, Zhen Puyang, Hui Chen, Peiji Liang, John B Troy, Xiaorong Liu
Brain-derived neurotrophic factor (BDNF), a neurotrophin essential for neuron survival and function, plays an important role in neuroprotection during neurodegenerative diseases. In this study, we examined whether a modest increase of retinal BDNF promotes retinal ganglion cell (RGC) survival after acute injury of the optic nerve in mice. We adopted an inducible Cre-recombinase transgenic system to up-regulate BDNF in the mouse retina and then examined RGC survival after optic nerve crush by in vivo imaging...
January 2017: ENeuro
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