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Peripheral nerve injury

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https://www.readbyqxmd.com/read/29790811/nanoscaffolds-in-promoting-regeneration-of-the-peripheral-nervous-system
#1
Chen Aijie, Lai Xuan, Liang Huimin, Zhang Yanli, Kang Yiyuan, Lin Yuqing, Shao Longquan
The ability to surgically repair peripheral nerve injuries is urgently needed. However, traditional tissue engineering techniques, such as autologous nerve transplantation, have some limitations. Therefore, tissue engineered autologous nerve grafts have become a suitable choice for nerve repair. Novel tissue engineering techniques derived from nanostructured conduits have been shown to be superior to other successful functional neurological structures with different scaffolds in terms of providing the required structures and properties...
May 2018: Nanomedicine
https://www.readbyqxmd.com/read/29790570/-%C3%A2-man-in-the-barrel%C3%A2-syndrome-atypical-manifestation-of-giant-cell-arteritis
#2
Y Calle-Lopez, A F Fernandez-Ramirez, E Franco-Dager, J G Gomez-Lopera, A L Vanegas-Garcia
INTRODUCTION: «Man-in-the-barrel» syndrome refers to diplegia of the upper extremities in which mobility of the head and lower limbs is preserved. Brachial plexitis that presents as «man-in-the-barrel» syndrome is an unusual manifestation of giant cell arteritis. We report a case of C5-C6 plexitis as part of the clinical features of a patient with giant cell arteritis. CASE REPORT: A 70-year-old male with a two-month history of weight loss, headache, facial pain and jaw claudication, associated with a persistent elevation of acute phase reactants and bilateral brachial plexopathy, with no evidence of neck or brain injuries or occult neoplasm and with negative autoimmunity tests...
June 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29789705/the-short-term-effect-of-ultrasound-and-peripheral-nerve-stimulator-guided-femoral-nerve-block-with-phenol-on-the-outcomes-of-patients-with-traumatic-spinal-cord-injury
#3
Yasin Demir, Ayça Uran Şan, Serdar Kesikburun, Evren Yaşar, Bilge Yılmaz
STUDY DESIGN: A pre-post descriptive study. OBJECTIVES: To examine the immediate effects of ultrasound-guided femoral nerve block with phenol (UGFNBwP) in managing the lower limb spasticity of individuals with traumatic spinal cord injury (SCI). SETTING: Ankara, Turkey. METHODS: Nineteen patients with traumatic SCI presenting with lower extremity spasticity were treated with UGFNBwP. Modified Ashworth Scale of hip flexion and knee extension, functional independence measure motor subscale, difficulty of catheterization, hygiene score, spasm frequency, sleep quality, and patient satisfaction (PS) were measured in all patients prior to treatment, in the first week and second month...
May 22, 2018: Spinal Cord
https://www.readbyqxmd.com/read/29787414/perioperative-peripheral-nerve-injury-after-general-anesthesia-a-qualitative-systematic-review
#4
Jason Chui, John M Murkin, Karen L Posner, Karen B Domino
Perioperative peripheral nerve injury (PNI) is a well-recognized complication of general anesthesia that continues to result in patient disability and malpractice claims. However, the multifactorial etiology of PNI is often not appreciated in malpractice claims given that most PNI is alleged to be due to errors in patient positioning. New advances in monitoring may aid anesthesiologists in the early detection of PNI. This article reviews recent studies of perioperative PNI after general anesthesia and discusses the epidemiology and potential mechanisms of injury and preventive measures...
May 21, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29787402/a-pilot-study-of-a-novel-automated-somatosensory-evoked-potential-ssep-monitoring-device-for-detection-and-prevention-of-intraoperative-peripheral-nerve-injury-in-total-shoulder-arthroplasty-surgery
#5
Jason Chui, John M Murkin, Darren Drosdowech
INTRODUCTION: Peripheral nerve injury is a potentially devastating complication after total shoulder arthroplasty (TSA) surgery. This pilot study aimed to assess the feasibility of using an automated somatosensory evoked potential (SSEP) device to provide a timely alert/intervention to minimize intraoperative nerve insults during TSA surgery. METHODS: A prospective, single-arm, observational study was conducted in a single university hospital. The attending anesthesiologist monitored the study participants using the EPAD automated SSEP device and an intervention was made if there was an alert during TSA surgery...
May 21, 2018: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/29786639/chemogenetic-enhancement-of-axon-regeneration-following-peripheral-nerve-injury-in-the-slick-a-mouse
#6
Poonam B Jaiswal, Olivia C Mistretta, Patricia J Ward, Arthur W English
The effects of chemogenetics on axon regeneration following peripheral nerve transection and repair were studied in mice expressing a Cre-dependent excitatory designer receptor exclusively activated by designer drugs (DREADD) and Cre-recombinase/yellow fluorescent protein (YFP) in a subset of motor and sensory neurons and cortical motoneurons (SLICK-A). Sciatic nerves were cut and repaired and mice were treated either once, at the time of injury, or five days per week for two weeks with clozapine N-oxide (CNO) (1 mg/kg, i...
May 22, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29784557/case-series-investigating-the-cortical-silent-period-after-burns-using-transcranial-magnetic-stimulation
#7
Tessa Garside, Fiona M Wood, Ann-Maree Vallence
OBJECTIVE: The study aimed to investigate intracortical inhibition following a burn injury, and to establish transcranial magnetic stimulation (TMS) as a useful and sensitive tool to investigate the cortical response to a burn injury. METHODS: Thirteen burn injured patients and 12 uninjured subjects underwent TMS to measure the cortical silent period (cSP), a marker of intracortical inhibition. RESULTS: In burn injury patients, cSP was similar in the burn-injured and less-injured arm (133 and 132ms respectively; p=0...
May 18, 2018: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29781959/involvement-of-the-vgf-derived-peptide-tlqp-62-in-nerve-injury-induced-hypersensitivity-and-spinal-neuroplasticity
#8
Alexander G J Skorput, Xijing Zhang, Jonathan J Waataja, Cristina D Peterson, Maureen S Riedl, Kelley F Kitto, Hai Truong, Cecilia Huffman, Stephen R Salton, Carolyn A Fairbanks, Christopher N Honda, Lucy Vulchanova
Neuroplasticity in the dorsal horn following peripheral nerve damage contributes critically to the establishment of chronic pain. The neurosecretory protein VGF (non-acronymic) is rapidly and robustly upregulated following nerve injury, and therefore peptides generated from it are positioned to serve as signals for peripheral damage. The goal of this project was to understand the spinal modulatory effects of the C-terminal VGF derived peptide TLQP-62 at the cellular level and gain insight into the function of the peptide in the development of neuropathic pain...
May 16, 2018: Pain
https://www.readbyqxmd.com/read/29781850/comparing-processed-nerve-allografts-and-assessing-their-capacity-to-retain-and-release-nerve-growth-factor
#9
Alonda C Pollins, Richard B Boyer, Marlieke Nussenbaum, Wesley P Thayer
Peripheral nerve gap injuries continue to present a clinical challenge to today's surgeons. One method of surgical repair, implantation of acellular allografts, has been developed with the aim of bridging the gap with a cadaveric graft after removal of its cellular components, thereby accelerating axonal regeneration and eliminating the need for immunosuppression in recipient patients. Although decellularizing allografts reduces rates of graft rejection, the same chemical processing modifies the neural microenvironment, removing neutrotrophic factors and modifying the complex extracellular matrix...
May 17, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29773299/diffusion-mri-in-acute-nervous-system-injury
#10
Matthew D Budde, Nathan P Skinner
Diffusion weighted magnetic resonance imaging (DWI) and related techniques such as diffusion tensor imaging (DTI) are uniquely sensitive to the microstructure of the brain and spinal cord. In the acute aftermath of nervous system injury, for example, DWI reveals changes caused by injury that remains invisible on other MRI contrasts such as T2 -weighted imaging. This ability has led to a demonstrated clinical utility in cerebral ischemia. However, despite strong promise in preclinical models and research settings, DWI has not been as readily adopted for other acute injuries such as traumatic spinal cord, brain, or peripheral nerve injury...
April 30, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29772248/scaffolds-for-peripheral-nerve-repair-and-reconstruction
#11
REVIEW
Sheng Yi, Lai Xu, Xiaosong Gu
Trauma-associated peripheral nerve defect is a widespread clinical problem. Autologous nerve grafting, the current gold standard technique for the treatment of peripheral nerve injury, has many internal disadvantages. Emerging studies showed that tissue engineered nerve graft is an effective substitute to autologous nerves. Tissue engineered nerve graft is generally composed of neural scaffolds and incorporating cells and molecules. A variety of biomaterials have been used to construct neural scaffolds, the main component of tissue engineered nerve graft...
May 14, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29770392/promotion-of-neurite-outgrowth-by-rationally-designed-ngf-%C3%AE-binding-peptide-nanofibers
#12
Zeynep Okur, Oya I Senturk, Canelif Yilmaz, Gulcihan Gulseren, Busra Mammadov, Mustafa O Guler, Ayse B Tekinay
Promotion of neurite outgrowth is an important limiting step for regeneration in nerve injury and depends strongly on the local expression of nerve growth factor (NGF). The rational design of bioactive materials is a promising approach for the development of novel therapeutic methods for nerve regeneration, and biomaterials capable of presenting NGF to nerve cells are especially suitable for this purpose. In this study, we show bioactive peptide amphiphile (PA) nanofibers capable of promoting neurite outgrowth by displaying high density binding epitopes for NGF...
May 17, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29768956/-express-attenuation-of-trpv1-by-amg-517-after-nerve-injury-promotes-peripheral-axonal-regeneration-in-rats
#13
Juan Bai, F U Liu, Li-Fei Wu, Ya-Fang Wang, Xia-Qing Li
AIMS: The main objective was to investigate the effects of the transient receptor potential cation channel subfamily V member 1 (TRPV1) on nerve regeneration following sciatic transection injury by functional blockage of TRPV1 using AMG-517, a specific blocker of TRPV1. METHODS: AMG-517 was injected into the area surrounding ipsilateral lumbar dorsal root ganglia (DRGs) 30 min after unilateral sciatic nerve transection. The number of sciatic axons and the expression of growth associated protein-43 (GAP-43) and glial fibrillary acidic protein (GFAP) were examined using semi-thin sections, western blot, and immunofluorescence analyses...
January 1, 2018: Molecular Pain
https://www.readbyqxmd.com/read/29767652/peripheral-glial-cell-line-derived-neurotrophic-factor-facilitates-the-functional-recovery-of-mechanical-nociception-following-inferior-alveolar-nerve-transection-in-rats
#14
Masahiro Watanabe, Masamichi Shinoda, Dulguun Batbold, Naoyuki Sugano, Shuichi Sato, Koichi Iwata
AIMS: To identify endogenous sources of glial cell line-derived neurotrophic factor (GDNF) at the injury site following inferior alveolar nerve transection (IANX) and to determine whether GDNF signaling promotes the recovery of orofacial pain sensation. METHODS: Nociceptive mechanical sensitivity of the facial skin was assessed following IANX (n = 10) or sham operation (n = 7). GDNF-positive cells were identified and the amount of GDNF measured in the injured region of IANX rats (n = 10) and in sham rats (n = 10)...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29764455/nerve-trauma-of-the-lower-extremity-evaluation-of-60-422-leg-injured-patients-from-the-traumaregister-dgu%C3%A2-between-2002-and-2015
#15
Torge Huckhagel, Jakob Nüchtern, Jan Regelsberger, Mathias Gelderblom, Rolf Lefering
BACKGROUND: Nerve lesions are well known reasons for reduced functional capacity and diminished quality of life. By now only a few epidemiological studies focus on lower extremity trauma related nerve injuries. This study reveals frequency and characteristics of nerve damages in patients with leg trauma in the European context. METHODS: Sixty thousand four hundred twenty-two significant limb trauma cases were derived from the TraumaRegister DGU® between 2002 and 2015...
May 15, 2018: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/29763654/obturator-neuromodulation-with-laparoscopic-placement-of-an-obturator-lead-for-the-treatment-of-intractable-opioid-dependent-chronic-pelvic-pain-due-to-obturator-neuralgia
#16
Richard P Marvel
Chronic pelvic pain(CPP) is a common condition in women that can have a devastating effect on quality of life. Some of the most severe forms of CPP are related to peripheral nerve injuries causing persistent neuropathic pain. This is a case of a young woman with severe opioid dependent chronic pelvic and right groin pain due to obturator neuralgia. She had failed a multitude of treatments including multiple medications, manual physical therapy, nerve blocks, surgical neurolysis and spinal cord stimulation without significant benefit...
May 12, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29763577/comparison-of-the-regenerative-effects-of-platelet-rich-fibrin-and-plasma-rich-in-growth-factors-on-injured-peripheral-nerve-an-experimental-study
#17
Damla Torul, Mehmet Cihan Bereket, Mehmet Emin Onger, Gamze Altun
PURPOSE: The aim of this study was to investigate the effects of platelet-rich fibrin (PRF) and plasma rich in growth factors (PRGF) on peripheral nerve injury in the early period of healing. MATERIAL AND METHODS: Thirty Wistar albino rats were used in this study. Rats were divided into control (C), damaged (D), PRF, and PRGF groups. The left sciatic nerves of each group were identified as group C. Crush-type injury was performed on the right sciatic nerves of the D, PRF, and PRGF groups...
April 20, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29760484/top-down-descending-facilitation-of-spinal-sensory-excitatory-transmission-from-the-anterior-cingulate-cortex
#18
Tao Chen, Wataru Taniguchi, Qi-Yu Chen, Hidetoshi Tozaki-Saitoh, Qian Song, Ren-Hao Liu, Kohei Koga, Tsuyoshi Matsuda, Yae Kaito-Sugimura, Jian Wang, Zhi-Hua Li, Ya-Cheng Lu, Kazuhide Inoue, Makoto Tsuda, Yun-Qing Li, Terumasa Nakatsuka, Min Zhuo
Spinal sensory transmission is under descending biphasic modulation, and descending facilitation is believed to contribute to chronic pain. Descending modulation from the brainstem rostral ventromedial medulla (RVM) has been the most studied, whereas little is known about direct corticospinal modulation. Here, we found that stimulation in the anterior cingulate cortex (ACC) potentiated spinal excitatory synaptic transmission and this modulation is independent of the RVM. Peripheral nerve injury enhanced the spinal synaptic transmission and occluded the ACC-spinal cord facilitation...
May 14, 2018: Nature Communications
https://www.readbyqxmd.com/read/29756516/transplantation-of-a-peripheral-nerve-with-neural-stem-cells-plus-lithium-chloride-injection-promote-the-recovery-of-rat-spinal-cord-injury
#19
Li-Qun Zhang, Wen-Ming Zhang, Lingxiao Deng, Zi-Xing Xu, Wen-Bin Lan, Jian-Hua Lin
Transplantation of neural stem cells (NSCs) holds great potential for the treatment of spinal cord injury (SCI). However, transplanted NSCs poorly survive in the SCI environment. We injected NSCs into tibial nerve and transplanted tibial nerve into a hemisected spinal cord and investigated the effects of lithium chloride (LiCl) on the survival of spinal neurons, axonal regeneration, and functional recovery. Our results show that most of the transplanted NSCs expressed glial fibrillary acidic protein, while there was no obvious expression of nestin, neuronal nuclei, or acetyltransferase found in NSCs...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29752515/epidemiology-and-pathophysiology-of-neurogenic-bladder-after-spinal-cord-injury
#20
Rizwan Hamid, Marcio Augusto Averbeck, Humberto Chiang, Arturo Garcia, Riyad T Al Mousa, Seung-June Oh, Anita Patel, Mauricio Plata, Giulio Del Popolo
Spinal cord injury (SCI) usually affects younger age groups with male preponderance. The most common traumatic cause is road traffic accident followed by sports accidents and gun-shot injuries. Infections and vascular events make up non-traumatic causes. There is regional variance in incidence and prevalence of SCI. Most systematic reviews have been undertaken from USA, Canada, and Australia with only few from Asia with resultant difficulty in estimation of worldwide figures. Overall, the incidence varies from 12 to more than 65 cases/million per year...
May 11, 2018: World Journal of Urology
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