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Peripheral nerve injury

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https://www.readbyqxmd.com/read/28340085/prevalence-of-neuropathic-pain-in-patients-with-traumatic-brachial-plexus-injury-a-multicenter-prospective-hospital-based-study
#1
Palma Ciaramitaro, Luca Padua, Grazia Devigili, Eugenia Rota, Stefano Tamburin, Roberto Eleopra, Giorgio Cruccu, Andrea Truini
Objective. : Prevalence and clinical characteristics of neuropathic pain due to traumatic brachial plexus injury. Design. : Observational epidemiological study. Setting. : Hospital-based multicenter study. Subjects. : One hundred seven prospectively enrolled patients with brachial plexus injury. Methods. : All the patients underwent clinical examination and neurophysiological testing for a definitive diagnosis of the brachial plexus lesion...
March 3, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28334605/new-horizons-in-diabetic-neuropathy-mechanisms-bioenergetics-and-pain
#2
REVIEW
Eva L Feldman, Klaus-Armin Nave, Troels S Jensen, David L H Bennett
Pre-diabetes and diabetes are a global epidemic, and the associated neuropathic complications create a substantial burden on both the afflicted patients and society as a whole. Given the enormity of the problem and the lack of effective therapies, there is a pressing need to understand the mechanisms underlying diabetic neuropathy (DN). In this review, we present the structural components of the peripheral nervous system that underlie its susceptibility to metabolic insults and then discuss the pathways that contribute to peripheral nerve injury in DN...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28330489/profiling-intraoral-neuropathic-disturbances-following-lingual-nerve-injury-and-in-burning-mouth-syndrome
#3
Amely Hartmann, Robin Seeberger, Malte Bittner, Roman Rolke, Claudia Welte-Jzyk, Monika Daubländer
BACKGROUND: The aim of the study was to analyse intraoral neurophysiological changes in patients with unilateral lingual nerve lesions as well as patients with Burning Mouth Syndrome (BMS) by applying a standardized Quantitative Sensory Testing (QST) protocol. METHODS: The study included patients suffering from a peripheral lesion of the lingual nerve (n = 4), from BMS (n = 5) and healthy controls (n = 8). Neurophysiological tests were performed in the innervation areas of the tongue bilaterally...
March 23, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28328634/bridging-the-gap-engineered-porcine-derived-urinary-bladder-matrix-conduits-as-a-novel-scaffold-for-peripheral-nerve-regeneration
#4
Lyly Nguyen, Ashkan Afshari, Nathaniel D Kelm, Alonda C Pollins, R Bruce Shack, Mark D Does, Wesley P Thayer
PURPOSE: This study aims to compare engineered nerve conduits constructed from porcine-derived urinary bladder matrix (UBM) with the criterion-standard nerve autografts, for segmental loss peripheral nerve repairs. METHODS: Forty-eight Sprague-Dawley rats were divided into 2 groups. All underwent a 10-mm sciatic nerve gap injury. This was repaired using either (1) reverse autograft-the 10-mm cut segment was oriented 180 degrees and used to coapt the proximal and distal stumps or (2) UBM conduit-the 10-mm nerve gap was bridged with UBM conduit...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28326946/polyamidoamine-dendrimer-conjugated-triamcinolone-acetonide-attenuates-nerve-injury-induced-spinal-cord-microglia-activation-and-mechanical-allodynia
#5
Hwisung Kim, Boomin Choi, Hyoungsub Lim, Hyunjung Min, Jae Hoon Oh, Sunghyun Choi, Joung Goo Cho, Jong-Sang Park, Sung Joong Lee
Background Accumulating evidence on the causal role of spinal cord microglia activation in the development of neuropathic pain after peripheral nerve injury suggests that microglial activation inhibitors might be useful analgesics for neuropathic pain. Studies also have shown that polyamidoamine dendrimer may function as a drug delivery vehicle to microglia in the central nervous system. In this regard, we developed polyamidoamine dendrimer-conjugated triamcinolone acetonide, a previously identified microglial activation inhibitor, and tested its analgesic efficacy in a mouse peripheral nerve injury model...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326939/-express-role-of-dorsal-root-ganglion-k2p1-1-in-peripheral-nerve-injury-induced-neuropathic-pain
#6
Qingxiang Mao, Jingjing Yuan, Xiong Ming, Shaogen Wu, Liyong Chen, Alex Bekker, Tiande Yang, Yuan-Xiang Tao
No abstract text is available yet for this article.
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326543/animal-models-for-studying-motor-axon-terminal-paralysis-and-recovery
#7
REVIEW
Michela Rigoni, Cesare Montecucco
An extraordinary property of the peripheral nervous system is that nerve terminals can regenerate after damage caused by different physical, chemical, or biological pathogens. Regeneration is the result of a complex and ill-known interplay among the nerve, the glia, the muscle, the basal lamina and, in some cases, the immune system. This phenomenon has been studied using different injury models mainly in rodents, particularly in mice, where a lesion can be produced in a chosen anatomical area. These approaches differ significantly among them for the nature of the lesion and the final outcomes...
March 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28325431/nerve-conduits-for-treating-peripheral-nerve-injuries-a-systematic-literature-review
#8
J Braga Silva, G M Marchese, C G Cauduro, M Debiasi
Peripheral nerve injuries are a major public health problem. Nerve conduits have been developed in the recent years, although it is still not clear if they should replace nerve grafting and neurorrhaphy. This systematic review aims to gather evidence regarding the use of nerve conduits for peripheral nerve repair. The following electronic databases were searched: MEDLINE, Cochrane Library (CENTRAL) and Embase. Study selection and data extraction followed the PRISMA guidelines. The systematic review of the literature retrieved 6767 articles...
April 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28323619/fast-spiking-gaba-circuit-dynamics-in-the-auditory-cortex-predict-recovery-of-sensory-processing-following-peripheral-nerve-damage
#9
Jennifer Resnik, Daniel B Polley
Cortical neurons remap their receptive fields and rescale sensitivity to spared peripheral inputs following sensory nerve damage. To address how these plasticity processes are coordinated over the course of functional recovery, we tracked receptive field reorganization, spontaneous activity, and response gain from individual principal neurons in the adult mouse auditory cortex over a 50-day period surrounding either moderate or massive auditory nerve damage. We related the day-by-day recovery of sound processing to dynamic changes in the strength of intracortical inhibition from parvalbumin-expressing (PV) inhibitory neurons...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28322042/differentiation-of-bone-marrow-stem-cells-into-schwann-cells-for-the-promotion-of-neurite-outgrowth-on-electrospun-fibers
#10
Jiajia Xue, Junyu Yang, Deirdre Margaret O'Connor, Chunlei Zhu, Da Huo, Nicholas M Boulis, Younan Xia
Seeding nerve guidance conduits with Schwann cells can improve the outcome of peripheral nerve injury repair. Bone marrow stem cells (BMSCs) represent a good choice of the cell source as they can differentiate into Schwann cells under appropriate conditions. In this work, we systematically investigated the differentiation of BMSCs into Schwann cells on scaffolds comprised of electrospun fibers. We changed the alignment, diameter, and surface properties of the fibers to optimize the differentiation efficiency...
March 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28320842/stat3-controls-the-long-term-survival-and-phenotype-of-repair-schwann-cells-during-nerve-regeneration
#11
Cristina Benito, Catherine M Davis, Jose A Gomez-Sanchez, Mark Turmaine, Dies Meijer, Valeria Poli, Rhona Mirsky, Kristjan R Jessen
After nerve injury, Schwann cells convert to a phenotype specialised to promote repair. But during the slow process of axonal regrowth, these repair Schwann cells gradually lose their regeneration-supportive features and eventually die. Although this is a key reason for the frequent regeneration failures in humans, the transcriptional mechanisms that control long-term survival and phenotype of repair cells have not been studied, and the molecular signalling underlying their decline is obscure. We show, in mice, that Schwann cell STAT3 has a dual role...
March 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28317656/the-sensory-function-of-the-uninjured-nerve-in-patients-after-median-and-ulnar-nerve-injury
#12
Marcin Ceynowa, Rafał Pankowski, Marek Rocławski, Tomasz Mazurek
STUDY DESIGN: A retrospective cohort study. INTRODUCTION: Some patients after median or ulnar nerve injury report a diminished sensibility in the fingers that are supplied by the uninjured nerve. PURPOSE OF THE STUDY: The purpose of this study was to evaluate the function of the uninjured nerve in patients after peripheral nerve injury to assess the presence and degree of its functional impairment. METHODS: There were 28 patients with median and 29 patients with ulnar nerve injury examined for sensory disturbances in the injured and uninjured nerves, using several tests assessing touch, temperature, and vibration sensibility...
January 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28317655/determining-the-functional-sensibility-of-the-hand-in-patients-with-peripheral-nerve-repair-feasibility-of-using-a-novel-manual-tactile-test-for-monitoring-the-progression-of-nerve-regeneration
#13
Hsiu-Yun Hsu, Li-Chieh Kuo, Ta-Shen Kuan, Hsiu-Ching Yang, Fong-Chin Su, Haw-Yen Chiu, Shyh-Jou Shieh
STUDY DESIGN: Case-controlled cohort study. INTRODUCTION: Sensory function is difficult to observe during nerve regeneration processes. Traditional sensory tests are limited to identifying the level of functioning hand sensation for sensory stimulus is given passively to the cutaneous surface of the hand. PURPOSE OF THE STUDY: To examine the outcome changes in the manual tactile test (MTT), Semmes-Weinstein monofilament (SWM) and 2-point discrimination (2PD) tests for patients with nerve repair and to investigate the concurrent validity of MTT by comparing it with the results of traditional tests...
January 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28316590/rehabilitation-using-guided-cerebral-plasticity-of-a-brachial-plexus-injury-treated-with-intercostal-and-phrenic-nerve-transfers
#14
Lars B Dahlin, Gert Andersson, Clas Backman, Hampus Svensson, Anders Björkman
Recovery after surgical reconstruction of a brachial plexus injury using nerve grafting and nerve transfer procedures is a function of peripheral nerve regeneration and cerebral reorganization. A 15-year-old boy, with traumatic avulsion of nerve roots C5-C7 and a non-rupture of C8-T1, was operated 3 weeks after the injury with nerve transfers: (a) terminal part of the accessory nerve to the suprascapular nerve, (b) the second and third intercostal nerves to the axillary nerve, and (c) the fourth to sixth intercostal nerves to the musculocutaneous nerve...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28316120/synergistic-effects-of-g-csf-and-bone-marrow-stromal-cells-on-nerve-regeneration-with-acellular-nerve-xenografts
#15
Hua Jia, Ying Wang, Tao Wang, Yi Dong, Wei-Li Li, Jun-Ping Li, Wen-Zhi Ma, Xiao-Jie Tong, Zhong-Yi He
Peripheral nerve defects result in severe denervation presenting sensory and motor functional incapacitation. Currently, a satisfactory therapeutic treatment promoting the repair of injured nerves is not available. As shown in our previous study, acellular nerve xenografts (ANX) implanted with bone marrow stromal cells (BMSCs) replaced allografts and promoted nerve regeneration. Additionally, granulocyte-colony stimulating factor (G-CSF) has been proven to mobilize supplemental cells and enhance vascularization in the niche...
March 18, 2017: Synapse
https://www.readbyqxmd.com/read/28315268/sigma-1-receptor-antagonists-a-new-class-of-neuromodulatory-analgesics
#16
Cristina Sánchez-Fernández, José Manuel Entrena, José Manuel Baeyens, Enrique José Cobos
The sigma-1 receptor is a unique ligand-operated chaperone present in key areas for pain control, in both the peripheral and central nervous system. Sigma-1 receptors interact with a variety of protein targets to modify their function. These targets include several G-protein-coupled receptors such as the μ-opioid receptor, and ion channels such as the N-methyl-D-aspartate receptor (NMDAR). Sigma-1 antagonists modify the chaperoning activity of sigma-1 receptor by increasing opioid signaling and decreasing NMDAR responses, consequently enhancing opioid antinociception and decreasing the sensory hypersensitivity that characterizes pathological pain conditions...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#17
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
March 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28303761/percutaneous-peripheral-nerve-stimulation-for-treatment-of-shoulder-pain-after-spinal-cord-injury-a-case-report
#18
Daniela Mehech, Melvin Mejia, Gregory A Nemunaitis, John Chae, Richard D Wilson
CONTEXT: This describes the first person with spinal cord injury (SCI) treated with percutaneous peripheral nerve stimulation for chronic shoulder pain. FINDINGS: From baseline to one-week after treatment, the subject's worst pain in the last week, rated on a 0-10 numerical rating scale (BPI-SF3), decreased by 44%. Pain interference decreased and remained below baseline 12 weeks after the end of treatment. There was an associated improvement in the mental component of quality of life...
March 17, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28301586/influence-of-early-neurological-complications-on-clinical-outcome-following-lung-transplant
#19
Josep Gamez, Maria Salvado, Alejandro Martinez-de La Ossa, Maria Deu, Laura Romero, Antonio Roman, Judith Sacanell, Cesar Laborda, Isabel Rochera, Miriam Nadal, Francesc Carmona, Estevo Santamarina, Nuria Raguer, Merce Canela, Joan Solé
BACKGROUND: Neurological complications after lung transplantation are common. The full spectrum of neurological complications and their impact on clinical outcomes has not been extensively studied. METHODS: We investigated the neurological incidence of complications, categorized according to whether they affected the central, peripheral or autonomic nervous systems, in a series of 109 patients undergoing lung transplantation at our center between January 1 2013 and December 31 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28298014/effect-of-granulocyte-colony-stimulating-factor-on-the-cochlear-nuclei-after-creation-of-a-partial-nerve-lesion-an-experimental-study-in-rats
#20
Guilherme Ramina Montibeller, Benjamin Schackmann, Steffi Urbschat, Joachim M K Oertel
OBJECTIVE The risk of injury of the cochlear nerve during angle (CPA) surgery is high. Granulocyte colony-stimulating factor (G-CSF) has been found in various experimental models of peripheral and CNS injury to have a neuroprotective effect by inhibiting apoptosis and inflammation. However, to the authors' knowledge, the influence of G-CSF on cochlear nerve regeneration has not been reported. This study investigated the neuroprotective effect of G-CSF after a partial cochlear nerve lesion in rats. METHODS A lesion of the right cochlear nerve in adult male Sprague-Dawley rats was created using a water-jet dissector with a pressure of 8 bar...
February 17, 2017: Journal of Neurosurgery
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