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https://www.readbyqxmd.com/read/28230415/targeting-translational-successes-through-cansort-sci-using-pet-dogs-to-identify-effective-treatments-for-spinal-cord-injury
#1
Sarah A Moore, Nicolas Granger, Natasha Olby, Ingo Spitzbarth, Nick D Jeffery, Andrea Tipold, Yvette S Nout-Lomas, Ronaldo da Costa, Veronika Stein, Linda Noble-Haeusslein, Andrew R Blight, Robert Grossman, D Michele Basso, Jonathan Michael Levine
Translation of therapeutic interventions for spinal cord injury (SCI) from laboratory to clinic has been historically challenging, highlighting the need for robust models of injury that more closely mirror the human condition. The high prevalence of acute, naturally occurring SCI in pet dogs provides a unique opportunity to expeditiously evaluate promising interventions in a population of animals that are diagnosed and managed clinically in a manner similar to spinal cord-injured people, while adhering to NIH guidelines for scientific rigor and transparent reporting...
February 23, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28192461/canine-neuroanatomy-development-of-a-3d-reconstruction-and-interactive-application-for-undergraduate-veterinary-education
#2
Hazel Raffan, Julien Guevar, Matthieu Poyade, Paul M Rea
Current methods used to communicate and present the complex arrangement of vasculature related to the brain and spinal cord is limited in undergraduate veterinary neuroanatomy training. Traditionally it is taught with 2-dimensional (2D) diagrams, photographs and medical imaging scans which show a fixed viewpoint. 2D representations of 3-dimensional (3D) objects however lead to loss of spatial information, which can present problems when translating this to the patient. Computer-assisted learning packages with interactive 3D anatomical models have become established in medical training, yet equivalent resources are scarce in veterinary education...
2017: PloS One
https://www.readbyqxmd.com/read/28190488/effect-of-a-titanium-cage-as-a-stand-alone-device-on-biomechanical-stability-in-the-lumbosacral-spine-of-canine-cadavers
#3
M Teunissen, A J van der Veen, T H Smit, M A Tryfonidou, B P Meij
Degenerative lumbosacral stenosis is a common disease in dogs characterised by intervertebral disc herniation, loss of disc height and stenosis. Decompressive dorsal laminectomy and partial discectomy can cause spinal instability and worsen foraminal stenosis. Pedicle screw and rod fixation (PSRF) with an intervertebral body cage allows for distraction and restoration of disc height and restores foraminal apertures. The aim of this study was to evaluate the ex vivo biomechanical properties of a titanium intervertebral cage alone and in combination with PSRF in the lumbosacral spine of dogs...
February 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28173745/characterization-of-chronic-axonal-degeneration-using-diffusion-tensor-imaging-in-canine-spinal-cord-injury-a-quantitative-analysis-of-dti-parameters-according-to-histopathological-differences
#4
Hakyoung Yoon, Jaehwan Kim, Won-Jin Moon, Sang-Soep Nahm, Jun Zhao, Hyoung-Moon Kim, Kidong Eom
Diffusion tensor imaging (DTI) is more sensitive than conventional magnetic resonance imaging (MRI) for the identification of axonal degeneration. However, no study to date has used DTI to evaluate the severity of axonal degeneration in canine spinal cord injury. Therefore, the aim of this study was to characterize multi-grade axonal degeneration (mild, moderate, and severe) in a canine model of spinal cord compression injury using DTI. MRI data were obtained from six normal dogs and five dogs with lumbar spinal cord injury 78 days after spinal cord injury (L1-L3) using a 3T MRI scanner...
February 7, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28132596/comparison-of-two-moldable-calcium-phosphate-based-bone-graft-materials-in-a-non-instrumented-canine-interspinous-implantation-model
#5
Davide Barbieri, Huipin Yuan, Ali Ismailoğlu, Joost de Bruijn
There is a continuing search for novel synthetic materials as an alternative to autologous bone grafting. Different technologies are explored to promote bone formation, which include the addition of BioGlassTM particles in calcium phosphate (CaP) based materials and the use of surface modification in the form of submicron surface topographies. In this work we aimed at comparing the bone formation in a non-instrumented canine interspinous (IS) model of moldable formulations of a submicron surface structured tricalcium phosphate/alkylene oxide (CaP/AOC) or a tricalcium phosphate/BioGlassTM/collagen (CaP/BG/C) bone graft material...
January 28, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28093103/urinary-3-hydroxypropyl-mercapturic-acid-3-hpma-concentrations-in-dogs-with-acute-spinal-cord-injury-due-to-intervertebral-disc-herniation
#6
A M Sangster, L Zheng, R T Bentley, R Shi, R A Packer
The aim of this study was to investigate urinary 3-hydroxypropyl mercapturic acid (3-HPMA), a metabolite of acrolein, as a novel biomarker in acute spinal cord injury (ASCI) due to intervertebral disc herniation in dogs. Urine from 10 client-owned dogs with ASCI collected at presentation and 10 control dogs was analyzed for 3-HPMA. The median urinary 3-HPMA concentration in ASCI dogs was significantly higher than in control dogs, but was not correlated with the severity of ASCI. The median urinary 3-HPMA concentration in intact dogs was higher than in neutered dogs...
January 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28092739/an-emg-driven-biomechanical-model-of-the-canine-cervical-spine
#7
M Alizadeh, G G Knapik, J S Dufour, C Zindl, M J Allen, J Bertran, N Fitzpatrick, W S Marras
Due to the frequency of cervical spine injuries in canines, the purpose of this effort was to develop an EMG-driven dynamic model of the canine cervical spine to assess a biomechanical understanding that enables one to investigate the risk of neck disorders. A canine subject was recruited in this investigation in order to collect subject specific data. Reflective markers and a motion capture system were used for kinematic measurement; surface electrodes were used to record electromyography signals, and with the aid of force plate kinetics were recorded...
February 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28074710/canine-spinal-cord-glioma
#8
Daniel R Rissi, Renee Barber, Annabelle Burnum, Andrew D Miller
Spinal cord glioma is uncommonly reported in dogs. We describe the clinicopathologic and diagnostic features of 7 cases of canine spinal cord glioma and briefly review the veterinary literature on this topic. The median age at presentation was 7.2 y. Six females and 1 male were affected and 4 dogs were brachycephalic. The clinical course lasted from 3 d to 12 wk, and clinical signs were progressive and associated with multiple suspected neuroanatomic locations in the spinal cord. Magnetic resonance imaging of 6 cases revealed T2-weighted hyperintense lesions with variable contrast enhancement in the spinal cord...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28069688/up-regulation-of-cb2-receptors-in-reactive-astrocytes-in-canine-degenerative-myelopathy-a-disease-model-of-amyotrophic-lateral-sclerosis
#9
María Fernández-Trapero, Francisco Espejo-Porras, Carmen Rodríguez-Cueto, Joan R Coates, Carmen Pérez-Díaz, Eva de Lago, Javier Fernández-Ruiz
Targeting the CB2 receptor afforded neuroprotection in SOD1(G93A) mutant mice, a model of amyotrophic lateral sclerosis (ALS). The neuroprotective effects of CB2 receptors were facilitated by their up-regulation in the spinal cord in SOD1(G93A) mutant mice. Herein, we have investigated whether a similar CB2 receptor up-regulation, as well as parallel changes in other endocannabinoid elements, are evident in the spinal cord of dogs with degenerative myelopathy (DM), caused from mutations in the superoxide dismutase 1 gene (SOD1)...
January 9, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28067245/effect-of-hierarchically-aligned-fibrin-hydrogel-in-regeneration-of-spinal-cord-injury-demonstrated-by-tractography-a-pilot-study
#10
Zhenxia Zhang, Shenglian Yao, Sheng Xie, Xiumei Wang, Feiyan Chang, Jie Luo, Jingming Wang, Jun Fu
Some studies have reported that scaffold or cell-based transplantation may improve functional recovery following SCI, but no imaging information regarding regeneration has been provided to date. This study used tractography to show the regenerating process induced by a new biomaterial-aligned fibrin hydrogel (AFG). A total of eight canines subjected to SCI procedures were assigned to the control or the AFG group. AFG was implanted into the SCI lesion immediately after injury in 5 canines. A follow-up was performed at 12 weeks to evaluate the therapeutic effect including the hindlimb functional recovery, anisotropy and continuity of fibers on tractography...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28033318/a-point-mutation-in-a-lincrna-upstream-of-gdnf-is-associated-to-a-canine-insensitivity-to-pain-a-spontaneous-model-for-human-sensory-neuropathies
#11
Jocelyn Plassais, Laetitia Lagoutte, Solenne Correard, Manon Paradis, Eric Guaguère, Benoit Hédan, Alix Pommier, Nadine Botherel, Marie-Christine Cadiergues, Philippe Pilorge, David Silversides, Maud Bizot, Mark Samuels, Carme Arnan, Rory Johnson, Christophe Hitte, Gilles Salbert, Agnès Méreau, Pascale Quignon, Thomas Derrien, Catherine André
Human Hereditary Sensory Autonomic Neuropathies (HSANs) are characterized by insensitivity to pain, sometimes combined with self-mutilation. Strikingly, several sporting dog breeds are particularly affected by such neuropathies. Clinical signs appear in young puppies and consist of acral analgesia, with or without sudden intense licking, biting and severe self-mutilation of the feet, whereas proprioception, motor abilities and spinal reflexes remain intact. Through a Genome Wide Association Study (GWAS) with 24 affected and 30 unaffected sporting dogs using the Canine HD 170K SNP array (Illumina), we identified a 1...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/28029610/impact-of-local-injection-of-brain-derived-neurotrophic-factor-expressing-mesenchymal-stromal-cells-mscs-combined-with-intravenous-msc-delivery-in-a-canine-model-of-chronic-spinal-cord-injury
#12
Seung Hoon Lee, Yongsun Kim, Daeun Rhew, Ahyoung Kim, Kwang Rae Jo, Yongseok Yoon, Kyeung Uk Choi, Taeseong Jung, Wan Hee Kim, Oh-Kyeong Kweon
BACKGROUND AIMS: The microenvironment of the chronically injured spinal cord does not allow for axonal regeneration due to glial scarring. To ameliorate this, several therapeutic strategies have been used. We investigated whether combined transplantation of chondroitinase ABC (chABC) and mesenchymal stromal cells (MSCs) genetically modified to secrete brain-derived neurotrophic factor (BDNF) with intravenous (IV) administration of MSCs can promote recovery of hindlimb function after chronic spinal cord injury (SCI)...
October 28, 2016: Cytotherapy
https://www.readbyqxmd.com/read/28024876/neuronal-ceroid-lipofuscinosis-ncl-is-caused-by-the-entire-deletion-of-cln8-in-the-alpenl%C3%A3-ndische-dachsbracke-dog
#13
M Hirz, M Drögemüller, A Schänzer, V Jagannathan, E Dietschi, H H Goebel, W Hecht, S Laubner, M J Schmidt, F Steffen, M Hilbe, K Köhler, C Drögemüller, C Herden
Neuronal ceroid lipofuscinoses (NCLs) are inherited lysosomal storage diseases that have been described in a variety of dog breeds, where they are caused by different mutations in different genes. However, the causative gene defect in the breed Alpenländische Dachsbracke remained unknown so far. Here we present two confirmed cases of NCL in Alpenländische Dachsbracke dogs from different litters of the same sire with a different dam harboring the same underlying novel mutation in the CLN8 gene. Case 1, a 2-year-old male Alpenländische Dachsbracke was presented with neurological signs including disorientation, character changes including anxiety states and aggressiveness, sudden blindness and reduction of food intake...
December 19, 2016: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/27941298/degenerative-myelopathy-in-the-collie-breed-a-retrospective-immunohistochemical-analysis-of-superoxide-dismutase-1-in-an-affected-rough-collie-and-a-molecular-epidemiological-survey-of-the-sod1-c-118g-a-mutation-in-japan
#14
Moeko Kohyama, Masato Kitagawa, Hiroaki Kamishina, Yui Kobatake, Akira Yabuki, Mariko Sawa, Shusaku Kakita, Osamu Yamato
Canine degenerative myelopathy (DM) is an adult-onset, progressive neurodegenerative disease that occurs in multiple dog breeds. A DM-associated mutation of the canine superoxide dismutase 1 (SOD1) gene, designated as c.118G>A (p.E40K), has been implicated as one of pathogenetic determinants of the disease in many breeds, but it remains to be determined whether the c.118G>A mutation is responsible for development or progression of DM in Collies. Previously, a Rough Collie was diagnosed clinically and histopathologically as having DM in Japan, suggesting the possibility that the Collie breed may be predisposed to DM due to the high frequency of c...
December 12, 2016: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/27862599/effects-of-image-plane-patient-positioning-and-foraminal-zone-on-magnetic-resonance-imaging-measurements-of-canine-lumbosacral-intervertebral-foramina
#15
Claudia Zindl, Russell L Tucker, Jelena Jovanovik, Constanza Gomez Alvarez, David Price, Noel Fitzpatrick
Degenerative lumbosacral stenosis has been suspected to have a dynamic component, especially regarding encroachment of the L7 nerve roots exiting the lumbosacral foramina. Angled cross-sectional imaging of the neuroforamina has been found improve the accuracy of the diagnosis of stenosis in humans. In this anatomic study, foraminal apertures were evaluated by MRI at the entry, middle, and exit zones of the nerve roots in 30 dogs that were clinically affected by lumbosacral disease. Standard vs. oblique planar orientation and neutral vs...
November 16, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27858587/the-feasibility-study-of-extradural-nerve-anastomosis-technique-for-canine-bladder-reinnervation-after-spinal-cord-injury
#16
Jian Tang, Jun Ma, Lei Yang, Xinpeng Huang, Yingbin Ge, Tao Sui, Zhongqing Wei, Xiaojian Cao
OBJECTIVE: Intradural nerve anastomosis for bladder innervation has been demonstrated to be useful. However, its clinical application remains limited because of the complex surgery, its complications and extensive bony destruction. The purpose of the current study was to demonstrate the feasibility of extradural spinal root anastomosis for bladder innervation in canines. METHODS: Ten beagle dogs were used. The length of the extradural segment of the nerve root, upper nerve root outlet (the point at which it emerges from the spinal dura mater) to S2 (dS2), the S3 (dS3) nerve root outlet distance, and the diameters of the extradural spinal roots were measured...
November 2016: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/27834287/naphthoquine-induced-central-nervous-system-and-hepatic-vasculocentric-toxicity-in-the-beagle-dog
#17
Jean-Rene Galarneau, Emily K Meseck, Robert L Hall, Wenkui Li, Margaret L Weaver
Naphthoquine phosphate (NP) was considered as a partner drug with a promising antimalarial drug candidate. Here we report unexpected adverse clinical signs and microscopic findings in a canine pilot toxicology study with NP. Male and female dogs were dosed daily by oral gavage with NP at 2, 10, or 50 mg/kg/day for a maximum of 14 days. NP was not tolerated at ≥10 mg/kg/day; several animals were sacrificed in moribund condition and marked neurological clinical signs were noted at 50 mg/kg/day. The main microscopic observation was central nervous system vasculocentric inflammation (mainly lymphocytes and macrophages) in the white and gray matter of various regions of the brain at ≥2 mg/kg/day and at lower incidence in the spinal cord at ≥10 mg/kg/day...
November 9, 2016: Toxicologic Pathology
https://www.readbyqxmd.com/read/27755493/mutation-of-the-planar-cell-polarity-gene-vangl1-in-adolescent-idiopathic-scoliosis
#18
Malene Rask Andersen, Muhammad Farooq, Karen Koefoed, Klaus W Kjaer, Ane Simony, Sren Tvorup Christensen, Lars Allan Larsen
STUDY DESIGN: Mutation analysis of a candidate disease gene in a cohort of patients with moderate to severe Adolescent idiopathic scoliosis (AIS). OBJECTIVE: To investigate if damaging mutations in the planar cell polarity gene VANGL1 could be identified in AIS patients. SUMMARY OF BACKGROUND DATA: AIS is a spinal deformity which occurs in 1-3% of the population. The cause of AIS is often unknown, but genetic factors are important in the etiology...
October 17, 2016: Spine
https://www.readbyqxmd.com/read/27723239/spinal-mast-cell-tumors-in-dogs-imaging-features-and-clinical-outcome-of-four-cases
#19
Trevor W Moore, R Timothy Bentley, Sarah A Moore, Michele Provencher, Emma E Warry, Rebecca Kohnken, Hock Gan Heng
Published information regarding canine vertebral column mast cell tumors (MCTs) is limited. The objectives of this study were to report clinical and advanced imaging findings for a group of dogs with confirmed spinal MCT. Inclusion criteria for this retrospective case series were dogs with spinal magnetic resonance imaging (MRI) or computed tomography (CT) scans and a histological diagnosis of spinal MCT. Clinical, imaging, treatment, and outcome data were recorded. Four dogs met inclusion criteria. One dog had primary spinal MCT and three dogs had metastatic spinal MCT...
January 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27708448/diagnostic-value-of-creatine-kinase-activity-in-canine-cerebrospinal-fluid
#20
Alexandra Ferreira
This study aimed to determine whether creatine kinase (CK) activity in cerebrospinal fluid (CSF) has diagnostic value for various groups of neurological conditions or for different anatomical areas of the nervous system (NS). The age, breed, results of CSF analysis, and diagnosis of 578 canine patients presenting with various neurological conditions between January 2009 and February 2015 were retrospectively collected. The cases were divided according to anatomical areas of the nervous system, i.e., brain, spinal cord, and peripheral nervous system, and into groups according to the nature of the condition diagnosed: vascular, immune/inflammatory/infectious, traumatic, toxic, anomalous, metabolic, idiopathic, neoplastic, and degenerative...
October 2016: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
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