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https://www.readbyqxmd.com/read/28645622/in-vivo-effects-of-knocking-down-metabotropic-glutamate-receptor-5-in-the-sod1-g93a-mouse-model-of-amyotrophic-lateral-sclerosis
#1
Tiziana Bonifacino, Luca Cattaneo, Elena Gallia, Aldamaria Puliti, Marcello Melone, Francesca Provenzano, Simone Bossi, Ilaria Musante, Cesare Usai, Fiorenzo Conti, Giambattista Bonanno, Marco Milanese
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder due to loss of upper and lower motor neurons (MNs). The mechanisms of neuronal death are largely unknown, thus prejudicing the successful pharmacological treatment. One major cause for MN degeneration in ALS is represented by glutamate(Glu)-mediated excitotoxicity. We have previously reported that activation of Group I metabotropic Glu receptors (mGluR1 and mGluR5) at glutamatergic spinal cord nerve terminals produces abnormal Glu release in the widely studied SOD1(G93A) mouse model of ALS...
June 20, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28645595/transforaminal-endoscopic-decompression-for-a-displaced-endplate-fracture-after-lateral-lumbar-interbody-fusion-technical-note
#2
Ralf Wagner, Albert E Telfeian, Guntram Krzok, Menno Iprenburg
Lateral lumbar interbody fusion (LLIF) is a minimally-invasive approach to anterior spinal column fusion, deformity correction and indirect decompression of the lumbar spine. A rarely reported possible complication of the procedure is endplate fracture which has the potential for nerve root compression. Here we present a case of endplate fracture and nerve compression after stand-alone LLIF, its diagnosis, and its subsequent successful treatment with transforaminal endoscopic spine surgery. The case highlights the possible role for minimally invasive endoscopic surgery as a rescue procedure after fusion complication...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28644430/the-clinical-landscape-for-sma-in-a-new-therapeutic-era
#3
REVIEW
K Talbot, E F Tizzano
Despite significant advances in basic research, the treatment of degenerative diseases of the nervous system remains one of the greatest challenges for translational medicine. The childhood onset motor neuron disorder spinal muscular atrophy (SMA) has been viewed as one of the more tractable targets for molecular therapy, due to a detailed understanding of the molecular genetic basis of the disease. In SMA, inactivating mutations in the SMN1 gene can be partially compensated for by limited expression of SMN protein from a variable number of copies of the SMN2 gene, which provides both a molecular explanation for phenotypic severity and a target for therapy...
June 23, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28642653/clinical-application-of-a-drill-guide-template-for-pedicle-screw-placement-in-severe-scoliosis
#4
Xin Li, Yaoshen Zhang, Qiang Zhang, Changsong Zhao, Kun Liu
OBJECTIVE: To evaluate the accuracy and the effect of drill guide template for pedicle screw placement in severe scoliosis. METHOD: Eight patients with rigid scoliosis were enrolled, five males and three females, ranging from nine to 23 years old. A three-dimensional CT scan of the spine was performed and saved as a DICOM file type. The multi-level template was designed by Mimics software and manufactured according to the part of the most severe deformity. The drill template was placed on the corresponding vertebral surface...
March 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28640860/the-path-to-specialist-multidisciplinary-care-in-amyotrophic-lateral-sclerosis-a-population-based-study-of-consultations-interventions-and-costs
#5
Miriam Galvin, Padhraig Ryan, Sinead Maguire, Mark Heverin, Caoifa Madden, Alice Vajda, Charles Normand, Orla Hardiman
BACKGROUND: Amyotrophic Lateral Sclerosis (ALS) is a devastating neurological condition that requires coordinated, multidisciplinary clinical management. ALS is prone to misdiagnosis as its signs and symptoms may be non-specific, which may prolong patients' journey to multidisciplinary ALS care. METHODS: Using chart review and national register data, we have detailed the journey of a national cohort of ALS patients (n = 155) from the time of first symptom to presentation at a multidisciplinary clinic (MDC)...
2017: PloS One
https://www.readbyqxmd.com/read/28640700/cns-tumors-in-neurofibromatosis
#6
Jian Campian, David H Gutmann
Neurofibromatosis (NF) encompasses a group of distinct genetic disorders in which affected children and adults are prone to the development of benign and malignant tumors of the nervous system. The purpose of this review is to discuss the spectrum of CNS tumors arising in individuals with NF type 1 (NF1) and NF type 2 (NF2), their pathogenic etiologies, and the rational treatment options for people with these neoplasms. This article is a review of preclinical and clinical data focused on the treatment of the most common CNS tumors encountered in children and adults with NF1 and NF2...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28640016/h2o2-induces-muscle-nociception-via-transient-receptor-potential-ankyrin-1-receptors
#7
Daisuke Sugiyama, Sinyoung Kang, Nicholas Arpey, Preeyaphan Arunakul, Yuriy M Usachev, Timothy J Brennan
BACKGROUND: H2O2 has a variety of actions in skin wounds but has been rarely studied in deep muscle tissue. Based on response to the transient receptor potential ankyrin 1 antagonists after plantar incision, we hypothesized that H2O2 exerts nociceptive effects via the transient receptor potential ankyrin 1 in muscle. METHODS: Nociceptive behaviors in rats (n = 269) and mice (n = 16) were evaluated after various concentrations and volumes of H2O2 were injected into the gastrocnemius muscle or subcutaneous tissue...
June 21, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28639940/genetic-specification-of-left-right-asymmetry-in-the-diaphragm-muscles-and-their-motor-innervation
#8
Camille Charoy, Sarah Dinvaut, Yohan Chaix, Laurette Morlé, Isabelle Sanyas, Muriel Bozon, Karine Kindbeiter, Bénédicte Durand, Jennifer M Skidmore, Lies De Groef, Motoaki Seki, Lieve Moons, Christiana Ruhrberg, James F Martin, Donna M Martin, Julien Falk, Valerie Castellani
The diaphragm muscle is essential for breathing in mammals. Its asymmetric elevation during contraction correlates with morphological features suggestive of inherent left-right (L/R) asymmetry. Whether this asymmetry is due to L versus R differences in the muscle or in the phrenic nerve activity is unknown. Here, we have combined the analysis of genetically modified mouse models with transcriptomic analysis to show that both the diaphragm muscle and phrenic nerves have asymmetries, which can be established independently of each other during early embryogenesis in pathway instructed by Nodal, a morphogen that also conveys asymmetry in other organs...
June 22, 2017: ELife
https://www.readbyqxmd.com/read/28639826/imaging-appearance-of-advanced-chronic-adhesive-arachnoiditis-a-retrospective-review
#9
Tara L Anderson, Jonathan M Morris, John T Wald, Amy L Kotsenas
OBJECTIVE: Chronic adhesive arachnoiditis (CAA) is rare and has potentially devastating clinical consequences. The objective of this article is to review the clinical features of CAA and describe its appearance on imaging, to increase radiologists' awareness of this challenging diagnosis. MATERIALS AND METHODS: Twenty-nine cases of advanced CAA seen at our institution over 18 years (1995-2013) were retrospectively reviewed. Chart review was performed, with attention given to data on clinical presentation, suspected cause, and interventions performed...
June 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28639345/acute-flaccid-myelitis-in-childhood-a-retrospective-cohort-study
#10
E W Andersen, A J Kornberg, J L Freeman, R J Leventer, M M Ryan
BACKGROUND AND PURPOSE: Clusters of acute limb weakness in paediatric patients have been linked to outbreaks of non-polio enteroviruses, termed acute flaccid myelitis (AFM). Outside these clusters, in countries where polio is not endemic, this poliomyelitic-like illness is rare in childhood and its natural history is not well defined. We describe presenting features, investigation findings and long-term outcome of a series of children with AFM. METHODS: This was a retrospective cohort study...
June 22, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28638473/rapid-fluorescence-imaging-of-spinal-cord-following-epidural-administration-of-a-nerve-highlighting-fluorophore
#11
Wanguo Liu, Rui Gu, Qingsan Zhu, Chunsheng Xiao, Lanfeng Huang, Xinming Zhuang, Jingzhe Zhang, Lidi Liu, Ben Ma, Huailin Yang, Jianchao Ma, Zhipeng Hu, Chenglin Tang, Shuhua Zhao, Xuesi Chen
Iatrogenic spinal cord injury (SCI) is the most devastating complication of spine surgery, which usually results in permanent and serious disabilities of patients. Improvement of the visualization and discrimination of the spinal cord is critical for accuracy and safety during surgery; however, to date, there is no suitable technology to fulfill this clinical need. Here, we first show an efficient and rapid fluorescence imaging of the spinal cord in rabbit by epidural administration of a nerve-highlighting fluorophore, i...
2017: Theranostics
https://www.readbyqxmd.com/read/28637999/a-morphological-study-of-the-foramina-of-the-mandible-in-the-japanese-macaque-by-cone-beam-computed-tomography
#12
Masataka Sunohara, Yoko Miwa, Iwao Sato
The mandibular canal (MC) contains vessels and nerves in the mandible of the Japanese macaque (JM). The inferior alveolar nerves and vessels of the mandible insert from the mandibular foramen and then run through the MC, the mental foramen and spinal foramen to the outside of the mandible. However, the detailed morphological properties of multiple canals, such as the accessory canal (AC) of the mandible, are unknown in JMs. The purpose of this study was to describe the multiple canals of JMs and to determine the location and analyse the measurements of the JM mandible...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/28637976/coordinated-control-of-the-tongue-during-suckling-like-activity-and-respiration
#13
Tomio Inoue, Kiyomi Nakayama, Yoshiaki Ihara, Satoshi Tachikawa, Shiro Nakamura, Ayako Mochizuki, Koji Takahashi, Takehiko Iijima
The tongue can move freely and is important in oral motor functions. Tongue movement must be coordinated with movement of the hyoid, mandible, and pharyngeal wall, to which it is attached. Our previous study using isolated brainstem-spinal cord preparations showed that application of N-methyl-D-aspartate induces rhythmic activity in the hypoglossal nerve that is coincident with rhythmic activity in the ipsilateral trigeminal motor nerve. Partial or complete midline transection of the preparation only abolishes activity in the trigeminal motor nerve; therefore, the neuronal network contributing to coordinated activity of the jaw/tongue muscles is located on both sides of the preparation and sends motor commands to contralateral trigeminal motoneurons...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28637974/neuron-glia-interaction-is-a-key-mechanism-underlying-persistent-orofacial-pain
#14
Koichi Iwata, Ayano Katagiri, Masamichi Shinoda
Excitability of neurons in the trigeminal ganglion (TG), trigeminal spinal subnucleus caudalis (Vc), and upper cervical spinal cord (C1-C2) is greatly enhanced after orofacial inflammation and trigeminal nerve injury, and TG, Vc, and C1-C2 neurons remain sensitized long after such episodes. Sensitized neurons generate various molecules, which are released from nociceptive neurons in these areas and are involved in modulating the excitability of TG, Vc, and C1-C2 nociceptive neurons. Hyperexcitable nociceptive neurons also activate satellite glial cells in the TG and microglial cells and astrocytes in the Vc and C1-C2...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28637379/neuropsychological-outcomes-of-pediatric-demyelinating-diseases-a-review
#15
Alexander Tan, Cole Hague, Benjamin M Greenberg, Lana Harder
Immune-mediated central nervous system (CNS) demyelinating diseases impact various areas of the brain, optic nerves, and/or spinal cord and can result in a wide range of neurologic symptoms including adverse cognitive outcomes. Neuropsychological outcomes in adult multiple sclerosis (MS) are well documented, while literature on such outcomes in pediatric cohorts is more limited. Furthermore, literature on neuropsychological outcomes in pediatric acute disseminated encephalomyelitis (ADEM), neuromyelitis optica (NMO), and transverse myelitis (TM) is even more limited...
June 21, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28636927/noxious-but-not-innocuous-thermal-stimuli-evoke-perk-expression-in-dorsal-horn-neurons-after-spared-nerve-injury-in-adult-rats
#16
Mohamad S Samour, Sumaiya M Shaikh, David A Mahns, Peter J Shortland
Noxious stimulation of sensory afferents evokes phosphorylated extracellular signal regulated kinase (pERK) expression in spinal cord neurons. This study investigated the expression of pERK in the dorsal horn neurons in response to innocuous and noxious cold stimuli in naïve versus spared nerve injury (SNI) rats. Noxious cold or hot stimuli (0 or 45°C) elicited pERK expression in laminae I-II whereas cooling stimuli from 32°C to 25, 15 or 5°C produced no or little pERK expression in dorsal horn neurons...
June 18, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28635523/long-term-paired-associative-stimulation-enhances-motor-output-of-the-tetraplegic-hand
#17
Aleksandra Tolmacheva, Sarianna Savolainen, Erika Kirveskari, Pantelis Lioumis, Linda Kuusela, Nina Maria Brandstack, Aarne Ylinen, Jyrki Mäkelä, Anastasia Shulga
A large proportion of spinal cord injuries are incomplete. Even in clinically complete injuries, silent nonfunctional connections can be present. Therapeutic approaches that can strengthen transmission in weak neural connections to improve motor performance are needed. Our aim was to determine whether long-term delivery of paired associative stimulation (PAS, a combination of transcranial magnetic stimulation (TMS) with peripheral nerve stimulation (PNS)) can enhance motor output in the hands of patients with chronic traumatic tetraplegia, and to compare this technique with long-term PNS...
June 21, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28634513/correlation-of-lumbar-lateral-recess-stenosis-in-magnetic-resonance-imaging-and-clinical-symptoms
#18
Annina Splettstößer, M Fawad Khan, Bernd Zimmermann, Thomas J Vogl, Hanns Ackermann, Marcus Middendorp, Adel Maataoui
AIM: To assess the correlation of lateral recess stenosis (LRS) of lumbar segments L4/5 and L5/S1 and the Oswestry Disability Index (ODI). METHODS: Nine hundred and twenty-seven patients with history of low back pain were included in this uncontrolled study. On magnetic resonance images (MRI) the lateral recesses (LR) at lumbar levels L4/5 and L5/S1 were evaluated and each nerve root was classified into a 4-point grading scale (Grade 0-3) as normal, not deviated, deviated or compressed...
May 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28634320/comparison-of-2-analgesia-modalities-in-total-knee-replacement-surgery-is-there-an-effect-on-knee-function-rehabilitation
#19
Janis Zinkus, Lina Mockutė, Arūnas Gelmanas, Ramūnas Tamošiūnas, Arūnas Vertelis, Andrius Macas
BACKGROUND We compared the effects of continuous femoral nerve block (CFNB) and continuous intraarticular block (CIAB) on pain, functional recovery and adverse effects after total knee arthroplasty (TKA). MATERIAL AND METHODS We prospectively randomized 54 patients undergoing TKA into 2 groups: CFNB (Group F) and CIAB (Group I). Surgery was performed under spinal anesthesia. All patients received patient-controlled analgesia (PCA) with morphine, diclofenac, and acetaminophen for the first 72 h postoperatively...
June 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28633155/regional-anesthesia-and-pain-medicine-us-anesthesiology-resident-training-the-year-2015
#20
Joseph M Neal, Anne Gravel Sullivan, Richard W Rosenquist, Dan J Kopacz
BACKGROUND AND OBJECTIVES: The Anesthesiology Review Committee of the Accreditation Council for Graduate Medical Education sets core requirements for residency program accreditation. We periodically report and analyze the US anesthesiology residents' training experience in regional anesthesia and pain medicine. METHODS: Resident caseload, procedure, and pain medicine evaluation data were aggregated for the resident cohort who graduated in 2015. These data were analyzed for present-day experience and compared with previous reports from years 1980, 1990, and 2000 graduates...
July 2017: Regional Anesthesia and Pain Medicine
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