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https://www.readbyqxmd.com/read/28437223/exercise-and-peripheral-nerve-grafts-as-a-strategy-to-promote-regeneration-after-acute-or-chronic-spinal-cord-injury
#1
Catherine C Theisen, Rahul Sachdeva, Scarett Austin, Danielle Kulich, Victoria Kranz, John D Houle
Therapeutic interventions after spinal cord injury (SCI) routinely are designed to address multiple aspects of the primary and/or secondary damage that occurs. Exercise has a demonstrated efficacy for post-SCI complications such as cardiovascular dysfunction, neuropathic pain and chronic inflammation yet there is little understanding of the mechanisms by which improvements might result from this non-invasive approach. Here we review several of our observations of molecular and cellular changes within the injured spinal cord following acute or delayed exercise regimens that illustrate the potential for positive effects on neuroprotection and rehabilitation...
February 11, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28436981/identification-of-spinal-circuits-involved-in-touch-evoked-dynamic-mechanical-pain
#2
Longzhen Cheng, Bo Duan, Tianwen Huang, Yan Zhang, Yangyang Chen, Olivier Britz, Lidia Garcia-Campmany, Xiangyu Ren, Linh Vong, Bradford B Lowell, Martyn Goulding, Yun Wang, Qiufu Ma
Mechanical hypersensitivity is a debilitating symptom for millions of chronic pain patients. It exists in distinct forms, including brush-evoked dynamic and filament-evoked punctate hypersensitivities. We reduced dynamic mechanical hypersensitivity induced by nerve injury or inflammation in mice by ablating a group of adult spinal neurons defined by developmental co-expression of VGLUT3 and Lbx1 (VT3(Lbx1) neurons): the mice lost brush-evoked nocifensive responses and conditional place aversion. Electrophysiological recordings show that VT3(Lbx1) neurons form morphine-resistant polysynaptic pathways relaying inputs from low-threshold Aβ mechanoreceptors to lamina I output neurons...
April 24, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28436279/treatment-of-painful-radiculopathies-with-capsaicin-8-cutaneous-patch
#3
R Baron, R D Treede, F Birklein, T Cegla, R Freynhagen, M L Heskamp, K U Kern, C Maier, R Rolke, S Seddigh, C Sommer, S Ständer, C Maihöfner
BACKGROUND AND OBJECTIVE: The treatment of neuropathic pain due to low-back (lumbosacral) radiculopathies, a common source of neuropathic pain, is challenging and often requires a multimodal therapeutic approach. The capsaicin 8% patch is the first topical analgesic licensed for peripheral neuropathic pain. To evaluate this treatment, a subset of patients with painful radiculopathy (lumbar and cervical, including ventral and dorsal rami) enrolled into the multicenter, non-interventional QUEPP study (Qutenza™ - safety and effectiveness in peripheral neuropathic pain) was analyzed...
April 22, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28435923/bone-bridge-formation-across-the-neuroforamen-14-years-after-instrumented-fusion-for-isthmic-spondylolisthesis-a-case-report
#4
Joel Louis Lim, Kimberly-Anne Tan, Hwee Weng Dennis Hey
This case report describes the first case of a bone bridge formation across the left L5/S1 neuroforamen after instrumented posterolateral fusion for L5/S1 isthmic spondylolisthesis. Our patient was a 70-year-old lady who had grade 2, L5/S1 isthmic spondylolisthesis and bilateral S1 nerve root compression. She suffered from mechanical low back pain and neurogenic claudication, with radicular pain over both S1 dermatomes. She underwent in-situ, instrumented, posterolateral fusion and was asymptomatic for more than 13 years before developing progressive onset of left radicular pain over the L5 dermatome...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28434767/extrarenal-rhabdoid-tumor-presented-with-an-immobile-arm-in-a-one-year-old-boy
#5
Chi-Ting Chung, Yen-Lin Liu, Chien-Jui Cheng, Kevin Li-Chun Hsieh, Min-Lan Tsai, Tai-Tong Wong
Infants with an immobile arm may be easily overlooked in primary care settings. Differential diagnoses include injuries, infections, neuropathies, ischemia and rarely, neoplasms. We report the case of a one-year-old boy with weakness in his left arm after minor trauma with a diagnosis of brachial plexus palsy initially. After rehabilitation for 2months, his weakness progressed to unsteady gait and quadriparesis. MRI revealed a huge solid tumor in the left supraclavicular fossa, which also involved the left brachial plexus, upper thoracic cavity, and left paravertebral space with invasion into the spinal canal...
April 20, 2017: Brain & Development
https://www.readbyqxmd.com/read/28434048/clinical-and-radiological-outcomes-of-endoscopic-partial-facetectomy-for-degenerative-lumbar-foraminal-stenosis
#6
Myung Soo Youn, Jong Ki Shin, Tae Sik Goh, Jung Sub Lee
BACKGROUND: Several different techniques exist to treat degenerative lumbar foraminal stenosis. Failure to adequately decompress the lumbar foramen may lead to failed back surgery syndrome. However, wide decompression often causes spinal instabilities or may require an additional fusion surgery. The aim of this study was to report the outcomes of endoscopic partial facetectomy (EPF) performed on patients with degenerative lumbar foraminal stenosis. METHODS: Between 2012 and 2014, 25 consecutive patients (12 women and 13 men) who underwent EPF were included in the study...
April 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28433644/supraspinal-respiratory-plasticity-following-acute-cervical-spinal-cord-injury
#7
Tatiana Bezdudnaya, Vitaliy Marchenko, Lyandysha V Zholudeva, Victoria M Spruance, Michael A Lane
Impaired breathing is a devastating result of high cervical spinal cord injuries (SCI) due to partial or full denervation of phrenic motoneurons, which innervate the diaphragm - a primary muscle of respiration. Consequently, people with cervical level injuries often become dependent on assisted ventilation and are susceptible to secondary complications. However, there is mounting evidence for limited spontaneous recovery of respiratory function following injury, demonstrating the neuroplastic potential of respiratory networks...
April 19, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28433438/analgesic-effects-of-transcutaneous-ultrasound-nerve-stimulation-in-a-rat-model-of-oxaliplatin-induced-mechanical-hyperalgesia-and-cold-allodynia
#8
Yueh-Ling Hsieh, Han-Yu Chen, Ching-Hsiang Yang, Chen-Chia Yang
This study investigated the effects and underlying mechanisms of therapeutic ultrasound (TUS) in a rat model of oxaliplatin-induced peripheral neuropathy. Animals received a total of eight injections with oxaliplatin (4 mg/kg), administered at 3-d intervals. TUS intervention (1 MHz, 0.5 W/cm(2)) started on the fifth oxaliplatin administration and continued for 10 consecutive d. Sensory behavioral examinations, protein levels of transient receptor potential channels (TRPM8 and TRPV1) in dorsal root ganglia (DRG) and substance P (SP) in spinal dorsal horn were examined...
April 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28432435/c4-5-foraminal-stenosis-predicts-c5-palsy-after-expansive-open-door-laminoplasty
#9
Ho-Jin Lee, Jae-Sung Ahn, Byungkon Shin, Hoseok Lee
INTRODUCTION: Laminoplasty is frequently performed in cervical myelopathy patients, but can lead to unexpected postoperative C5 palsy. Although several studies have examined the pathogenesis and prevention of postoperative C5 palsy, many controversies remain and some radiological findings identified as risk factors were not correlated with our outcomes. PURPOSE: This study sought reliable radiological findings that predict C5 palsy after laminoplasty and examined why the predictors of C5 palsy did not apply in our series...
April 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28429047/therapeutic-outcome-of-ct-guided-radiofrequency-ablation-in-patients-with-osteoid-osteoma
#10
Louis Lassalle, R Campagna, G Corcos, A Babinet, F Larousserie, J Stephanazzi, A Feydy
OBJECTIVE: To assess the long-term outcome of computed tomography-guided radiofrequency ablation (CT-guided RFA) in patients with suspected osteoid osteoma (OO). MATERIALS AND METHODS: Single-center retrospective study. Patients with clinical suspicion and imaging diagnosis of osteoid osteoma were treated by CT-guided RFA using the same device with either a 7- or 10-mm active tip electrode. Specific precautions were applied in case of articular or spinal OO. Patients were contacted by phone to evaluate the long-term outcome in terms of pain, ability to perform daily activities (including sports), and long-term complications...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28428928/origin-branching-and-communications-of-the-intercostobrachial-nerve-a-meta-analysis-with-implications-for-mastectomy-and-axillary-lymph-node-dissection-in-breast-cancer
#11
REVIEW
Brandon Michael Henry, Matthew J Graves, Jakub R Pękala, Beatrice Sanna, Wan Chin Hsieh, R Shane Tubbs, Jerzy A Walocha, Krzysztof A Tomaszewski
The intercostobrachial nerve (ICBN), which usually originates from the lateral cutaneous branch of the second intercostal nerve, innervates areas of the axilla, lateral chest, and medial arm. It is at risk for injury during operative procedures that are often used in the management of breast cancer and such injury has been associated with postoperative sensory loss and neuropathic pain, decreasing the quality of life. PubMed, Excerpta Medica Database (EMBASE), ScienceDirect, Google Scholar, China National Knowledge Infrastructure (CNKI), Scientific Electronic Library Online (SciELO), Biosciences Information Service (BIOSIS), and Web of Science were searched comprehensively...
March 17, 2017: Curēus
https://www.readbyqxmd.com/read/28428505/-neurolysis-and-spinal-analgesia-in-cancer-pain-management
#12
Seiji Hattori, Junko Tachibana
Cancer pain appears as a complex pain and often progressive.WhenWHO pain management strategy and/or palliative care failed to relieve their pain, patients are given high dose opioids or anonymous adjuvant drugs and have no chance to meet specialized pain treatment. This section briefly covers the outline of neurolysis and spinal analgesia for these cancer patients with severe pain. Purpose of nerve block and neurolysis are to block the incoming signal of pain in order to reduce pain, reduce analgesic dose, recover ADL, and finally to be discharged from the hospital...
April 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28428091/characterization-of-the-effects-of-l-4-chlorokynurenine-on-nociception-in-rodents
#13
Tony L Yaksh, Robert Schwarcz, H Ralph Snodgrass
Upon systemic administration in rats, the prodrug L-4-chlorokynurenine (4-Cl-KYN) (AV-101) is rapidly absorbed, actively transported across the blood-brain barrier, and converted in astrocytes to 7-chlorokynurenic acid (7-Cl-KYNA), a potent and specific antagonist of the GlyB co-agonist site of the NMDA receptor. We examined the effects of 4-Cl-KYN in several rat models of hyperalgesia and allodynia and determined the concentrations of 4-Cl-KYN and newly produced 7-Cl-KYNA in serum, brain and spinal cord. Adult male rats were given 4-Cl-KYN (56, 167, 500 mg/kg), the NMDA receptor antagonist MK-801 (0...
April 17, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28427722/biomechanical-investigation-of-post-operative-c5-palsy-due-to-ossification-of-the-posterior-longitudinal-ligament-in-different-types-of-cervical-spinal-alignment
#14
Batbayar Khuyagbaatar, Kyungsoo Kim, Won Man Park, Yoon Hyuk Kim
Post-operative C5palsies are among the most common complications seen after cervical surgery for ossification of the posterior longitudinal ligament (OPLL). Although C5 palsy is a well-known complication of cervical spine surgery, its pathogenesis is poorly understood and depends on many other factors. In this study, a finite element model of the cervical spine and spinal cord-nerve roots complex structures was developed. The changes in stress in the cord and nerve roots, posterior shift of the spinal cord, and displacement and elongation of the nerve roots after laminectomy for cervical OPLL were analyzed for three different cervical sagittal alignments (lordosis, straight, and kyphosis)...
April 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28427688/pruritus-may-be-a-common-symptom-related-to-neuromyelitis-optica-spectrum-disorders
#15
Zhiyong He, Ming Ren, Xiaofeng Wang, Qifeng Guo, Xiaokun Qi
BACKGROUND: To evaluate pruritus in patients with neuromyelitis optica spectrum disorders (NMOSD) and to characterize the relationship between pruritus and lesions of NMOSD. METHODS: 61 patients with NMOSD were included in the study and their medical records were reviewed for pruritus, neurological symptoms and magnetic resonance imaging (MRI) images. We focused on the patients' history of pruritus, especially the severity, duration, region, and the relationship of pruritus with other symptoms of NMOSD...
April 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28426550/neuropathic-pain-after-chronic-nerve-constriction-may-not-correlate-with-chloride-dysregulation-in-mouse-trigeminal-nucleus-caudalis-neurons
#16
Alberto Castro, Ying Li, Charles Raver, Ramesh Chandra, Radi Masri, Mary Kay Lobo, Asaf Keller
Changes in chloride reversal potential in rat spinal cord neurons have previously been associated with persistent pain in nerve injury and inflammation models. These changes correlate with a decrease in the expression of the potassium% chloride transporter, KCC2, and with increases in neuronal excitability. Here, we test the hypothesis that similar changes occur in mice with neuropathic pain induced by chronic constriction injury of the trigeminal infraorbital nerve (CCI¬-ION). This model allows us to distinguish an acute pain phase (3-¬5 days after injury) from a persistent pain phase (12¬-14 days after CCI-¬ION)...
April 18, 2017: Pain
https://www.readbyqxmd.com/read/28422349/effects-of-extrinsic-cardiac-nerve-stimulation-on-atrial-fibrillation-inducibility-the-regulatory-role-of-the-spinal-cord
#17
Zixuan Dai, Congxin Huang, Qingyan Zhao, Shujuan Zhang, Hongyi Zhao, Youjing Zhang, Yongsheng Qian, Yanhong Tang
OBJECTIVE: To investigate the effect of the mutual regulation of the extrinsic cardiac nerves on atrial electrophysiology and atrial fibrillation (AF) vulnerability. METHODS AND RESULTS: Fourteen dogs were randomly divided into 2 groups: spinal cord stimulation (SCS) group (n = 7) and spinal cord block (SCB) group (n = 7). SCS was performed with 90% of the threshold voltage stimulating the T1 -T2 spinal level, while SCB was performed by injecting 2% lidocaine into the epidural space at the T2-3 level...
April 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28421392/combination-of-sacral-nerve-and-tibial-nerve-stimulation-for-treatment-of-bladder-overactivity-in-pigs
#18
Xing Li, Limin Liao, Guoqing Chen, Zhaoxia Wang, Han Deng
PURPOSE: Sacral nerve and tibial nerve stimulation have been singly used to treat overactive bladder (OAB). This study evaluated the effects of both combined stimulation on treating bladder overactivity in pigs and explored a novel treatment modality for OAB. METHODS: An implant-driven stimulator of the S3 spinal nerve was implanted in 5 pigs. The contralateral tibial nerve was stimulated by an external stimulator. Multiple cystometrograms were performed to determine the effects of single nerve stimulation and combination sacral nerve stimulation (SNS) and tibial nerve stimulation (TNS) on the micturition reflex by infusing normal saline (NS) or acetic acid (AA)...
April 18, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28420964/identification-of-the-spinal-expression-profile-of-non-coding-rnas-involved-in-neuropathic-pain-following-spared-nerve-injury-by-sequence-analysis
#19
Jun Zhou, Qingming Xiong, Hongtao Chen, Chengxiang Yang, Youling Fan
Neuropathic pain (NP) is caused by damage to the nervous system, resulting in aberrant pain, which is associated with gene expression changes in the sensory pathway. However, the molecular mechanisms are not fully understood. A non-coding Ribose Nucleic Acid (ncRNA) is an RNA molecule that is not translated into a protein. NcRNAs are involved in many cellular processes, and mutations or imbalances of the repertoire within the body can cause a variety of diseases. Although ncRNAs have recently been shown to play a role in NP pathogenesis, the specific effects of ncRNAs in NP remain largely unknown...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28420598/1-5-t-augmented-reality-navigated-interventional-mri-paravertebral-sympathetic-plexus-injections
#20
David R Marker, Paweena U Thainual, Tamas Ungi, Aaron J Flammang, Gabor Fichtinger, Iulian I Iordachita, John A Carrino, Jan Fritz
PURPOSE: The high contrast resolution and absent ionizing radiation of interventional magnetic resonance imaging (MRI) can be advantageous for paravertebral sympathetic nerve plexus injections. We assessed the feasibility and technical performance of MRI-guided paravertebral sympathetic injections utilizing augmented reality navigation and 1.5 T MRI scanner. METHODS: A total of 23 bilateral injections of the thoracic (8/23, 35%), lumbar (8/23, 35%) and hypogastric (7/23, 30%) paravertebral sympathetic plexus were prospectively planned in twelve human cadavers using a 1...
April 18, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
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