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https://www.readbyqxmd.com/read/29330575/a-new-technique-for-minimal-invasive-complete-spinal-cord-injury-in-minipigs
#1
Elena E Foditsch, Gratian Miclaus, Irina Patras, Ioan Hutu, Karin Roider, Sophina Bauer, Günter Janetschek, Ludwig Aigner, Reinhold Zimmermann
BACKGROUND: The aim of this study was to develop a minimal invasive complete spinal cord injury (SCI) minipig model for future research applications. The minipig is considered a translationally relevant model for SCI research. However, a standardized minimal invasive complete SCI model for pigs has not yet been established. METHODS: Adult Göttingen minipigs were anesthetized and placed in extended prone position. After initial computed tomography (CT) scan, the skin was incised, a needle placed in the epidural fatty tissue...
January 12, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29327782/development-of-manganese-enhanced-magnetic-resonance-imaging-of-the-rostral-ventrolateral-medulla-of-conscious-rats-importance-of-normalization-and-comparison-with-other-regions-of-interest
#2
Daniel J Huereca, Konstandinos A Bakoulas, Farhad Ghoddoussi, Bruce A Berkowitz, Avril Genene Holt, Patrick J Mueller
Spinally projecting neurons in the rostral ventrolateral medulla (RVLM) are believed to contribute to pathophysiological alterations in sympathetic nerve activity and the development of cardiovascular disease. The ability to identify changes in the activity of RVLM neurons in conscious animals and humans, especially longitudinally, would represent a clinically important advancement in our understanding of the contribution of the RVLM to cardiovascular disease. To this end, we describe the initial development of manganese-enhanced magnetic resonance imaging (MEMRI) for the rat RVLM...
January 12, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29327668/impact-of-3-tesla-mri-on-interobserver-agreement-in-clinically-isolated-syndrome-a-magnims-multicentre-study
#3
Marloes Hj Hagens, Jessica Burggraaff, Iris D Kilsdonk, Serena Ruggieri, Sara Collorone, Rosa Cortese, Niamh Cawley, Emilia Sbardella, Michaela Andelova, Michael Amann, Johanna M Lieb, Patrizia Pantano, Birgit I Lissenberg-Witte, Joep Killestein, Celia Oreja-Guevara, Jens Wuerfel, Olga Ciccarelli, Claudio Gasperini, Carsten Lukas, Alex Rovira, Frederik Barkhof, Mike P Wattjes
BACKGROUND: Compared to 1.5 T, 3 T magnetic resonance imaging (MRI) increases signal-to-noise ratio leading to improved image quality. However, its clinical relevance in clinically isolated syndrome suggestive of multiple sclerosis remains uncertain. OBJECTIVES: The purpose of this study was to investigate how 3 T MRI affects the agreement between raters on lesion detection and diagnosis. METHODS: We selected 30 patients and 10 healthy controls from our ongoing prospective multicentre cohort...
January 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29326813/surgical-treatment-of-aggressive-vertebral-hemangioma-causing-progressive-paraparesis
#4
M Dobran, F Mancini, D Nasi, M Gladi, S Sisti, M Scerrati
Vertebral hemangioma is a benign vascular lesion that may onset with neurologic symptoms due to spinal cord compression by epidural extension. Surgical procedure, embolization and radiotherapy are the gold standard for the treatment of this disease. We present a case of a 84 years old woman admitted at our department with worsening paraparesis and urinary retention. Her magnetic resonance images (MRI) showed a lesion involving both anterior and posterior vertebral element of D5, with extension into epidural space and spinal cord compression...
January 2018: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/29325596/late-normal-tissue-response-in-the-rat-spinal-cord-after-carbon-ion-irradiation
#5
Maria Saager, Peter Peschke, Thomas Welzel, Lifi Huang, Stephan Brons, Rebecca Grün, Michael Scholz, Jürgen Debus, Christian P Karger
BACKGROUND: The present work summarizes the research activities on radiation-induced late effects in the rat spinal cord carried out within the "clinical research group ion beam therapy" funded by the German Research Foundation (DFG, KFO 214). METHODS AND MATERIALS: Dose-response curves for the endpoint radiation-induced myelopathy were determined at 6 different positions (LET 16-99 keV/μm) within a 6 cm spread-out Bragg peak using either 1, 2 or 6 fractions of carbon ions...
January 11, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29323631/endovascular-treatment-with-tirofiban-during-the-acute-stage-of-cervical-spinal-cord-infarction-due-to-vertebral-artery-dissection
#6
Yuanling Wu, Wenxian Li, Xiaomei Xie, Zhen Jing, Weibiao Lu, Li'an Huang
CONTEXT: Cervical spinal cord infarction is a rare and severe complication of vertebral artery dissection (VAD). We report a case of VAD in an acute stage followed by cervical spinal cord infarction that was treated using direct endovascular tirofiban infusion via digital subtraction angiography (DSA) monitoring. FINDINGS: A 48-year-old man presented with vertigo, neck pain, numbness and weakness in four limbs with subsequent cardiac and respiratory arrest. Neurological examination revealed hypoesthesia below the neck with grade one myodynamia on the right side of the limbs and zero on the left side...
January 11, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29323052/quantification-of-intermuscular-and-intramuscular-adipose-tissue-using-magnetic-resonance-imaging-after-neurodegenerative-disorders
#7
REVIEW
Madoka Ogawa, Robert Lester, Hiroshi Akima, Ashraf S Gorgey
Ectopic adiposity has gained considerable attention because of its tight association with metabolic and cardiovascular health in persons with spinal cord injury (SCI). Ectopic adiposity is characterized by the storage of adipose tissue in non-subcutaneous sites. Magnetic resonance imaging (MRI) has proven to be an effective tool in quantifying ectopic adiposity and provides the opportunity to measure different adipose depots including intermuscular adipose tissue (IMAT) and intramuscular adipose tissue (IntraMAT) or intramuscular fat (IMF)...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29323046/non-concomitant-cortical-structural-and-functional-alterations-in-sensorimotor-areas-following-incomplete-spinal-cord-injury
#8
Yu Pan, Wei-Bei Dou, Yue-Heng Wang, Hui-Wen Luo, Yun-Xiang Ge, Shu-Yu Yan, Quan Xu, Yuan-Yuan Tu, Yan-Qing Xiao, Qiong Wu, Zhuo-Zhao Zheng, Hong-Liang Zhao
Brain plasticity, including anatomical changes and functional reorganization, is the physiological basis of functional recovery after spinal cord injury (SCI). The correlation between brain anatomical changes and functional reorganization after SCI is unclear. This study aimed to explore whether alterations of cortical structure and network function are concomitant in sensorimotor areas after incomplete SCI. Eighteen patients with incomplete SCI (mean age 40.94 ± 14.10 years old; male:female, 7:11) and 18 healthy subjects (37...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29323044/magnetic-resonance-imaging-guided-focused-ultrasound-to-increase-localized-blood-spinal-cord-barrier-permeability
#9
Allison H Payne, Gregory W Hawryluk, Yoshimi Anzai, Henrik Odéen, Megan A Ostlie, Ethan C Reichert, Amanda J Stump, Satoshi Minoshima, Donna J Cross
Spinal cord injury (SCI) affects thousands of people every year in the USA, and most patients are left with some permanent paralysis. Therapeutic options are limited and only modestly affect outcome. To address this issue, we used magnetic resonance imaging-guided focused ultrasound (MRgFUS) as a non-invasive approach to increase permeability in the blood-spinal cord barrier (BSCB). We hypothesize that localized, controlled sonoporation of the BSCB by MRgFUS will aid delivery of therapeutics to the injury. Here, we report our preliminary findings for the ability of MRgFUS to increase BSCB permeability in the thoracic spinal cord of a normal rat model...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29323028/surgical-reconstruction-of-spinal-cord-circuit-provides-functional-return-in-humans
#10
REVIEW
Thomas Carlstedt, Nicholas James, Mårten Risling
This mini review describes the current surgical strategy for restoring function after traumatic spinal nerve root avulsion in brachial or lumbosacral plexus injury in man. As this lesion is a spinal cord or central nervous injury functional return depends on spinal cord nerve cell growth within the central nervous system. Basic science, clinical research and human application has demonstrated good and useful motor function after ventral root avulsion followed by spinal cord reimplantation. Recently, sensory return could be demonstrated following spinal cord surgery bypassing the injured primary sensory neuron...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322962/etiologic-spectrum-and-prognosis-in-noncompressive-acute-transverse-myelopathies-an-experience-of-80-patients-at-a-tertiary-care-facility
#11
Shuchit Pandey, Ravindra K Garg, Hardeep S Malhotra, Amita Jain, Kiran P Malhotra, Neeraj Kumar, Rajesh Verma, Praveen K Sharma
INTRODUCTION: We evaluated the spectrum of acquired demyelinating and inflammatory disorders in patients presenting with an acute transverse myelopathy. We also studied differences between an acute idiopathic transverse myelitis and myelitis resulting from other etiologies. MATERIALS AND METHODS: Eighty consecutive patients with acute transverse myelopathy were included. At inclusion, clinical profile, serum and cerebrospinal fluid parameters, brain and spinal cord magnetic resonance imaging, and visual evoked potentials were obtained...
January 2018: Neurology India
https://www.readbyqxmd.com/read/29312599/histopathological-molecular-clinical-and-radiological-characterization-of-rosette-forming-glioneuronal-tumor-in-the-central-nervous-system
#12
Chenlong Yang, Jingyi Fang, Guang Li, Shaowu Li, Tingting Ha, Jiangfei Wang, Bao Yang, Jun Yang, Yulun Xu
Objective: A rosette-forming glioneuronal tumor (RGNT) is a rare entity originally described in the fourth ventricle. Recently, RGNTs occurring in extraventricular sites and those with malignant behaviors have been reported. The purpose of this study was to analyze the clinicoradiological and histopathological features, therapeutic strategies, and outcomes of RGNTs. Methods: We enrolled 38 patients diagnosed with RGNTs pathologically between August 2009 and June 2016...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311540/diffusion-tensor-imaging-in-diagnosis-of-post-traumatic-syringomyelia-in-spinal-cord-injury-in-rats
#13
Chao Zhang, Kai Chen, Xiuxin Han, Jiayuanyuan Fu, Patricia Douglas, Anna Y Morozova, Maxim A Abakumov, Ilya L Gubsky, Dejin Li, Jin Guo, Xuening Zhang, Guowen Wang, Vladimir P Chekhonin
BACKGROUND Post-traumatic syringomyelia (PTS) is a common disease after spinal cord injury (SCI). The present study was performed to evaluate the advantages of diffusion tensor imaging (DTI) in estimating SCI and prognosing PTS in SCI rats. MATERIAL AND METHODS Forty rats were divided into 3 groups based on the extent of the individual SCI and PTS: a control group (n=10), a PTS group (n=8), and an SCI group (n=22). BBB tests were performed preoperatively and postoperatively at (1 d, 3 d, 5 d, 1 w, 2 w, 1 w, 2 w, 3 w, 4 w, 5 w, and 6 w)...
January 9, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29304802/evaluation-of-the-influence-of-kyphosis-and-scoliosis-on-intervertebral-disc-extrusion-in-french-bulldogs
#14
Maria Claudia C M Inglez de Souza, Richard Ryan, Gert Ter Haar, Rowena M A Packer, Holger A Volk, Steven De Decker
BACKGROUND: Although thoracic vertebral malformations with kyphosis and scoliosis are often considered incidental findings on diagnostic imaging studies of screw-tailed brachycephalic breeds, they have been suggested to interfere with spinal biomechanics and intervertebral disc degeneration. It is however unknown if an abnormal spinal curvature also predisposes dogs to develop clinically relevant intervertebral disc herniations. The aim of this study was to evaluate if the occurrence of thoracic vertebral malformations, kyphosis or scoliosis would be associated with a higher prevalence of cervical or thoracolumbar intervertebral disc extrusion in French bulldogs...
January 5, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29301177/iatrogenic-spinal-subarachnoid-hematoma-after-diagnostic-lumbar-puncture
#15
Jung Hyun Park, Jong Yeol Kim
Spinal subarachnoid hematoma (SSH) following diagnostic lumbar puncture is very rare. Generally, SSH is more likely to occur when the patient has coagulopathy or is undergoing anticoagulant therapy. Unlike the usual complications, such as headache, dizziness, and back pain at the needle puncture site, SSH may result in permanent neurologic deficits if not properly treated within a short period of time. An otherwise healthy 43-year-old female with no predisposing factors presented with fever and headache. Diagnostic lumbar puncture was performed under suspicion of acute meningitis...
December 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/29301176/sudden-paraplegia-caused-by-nontraumatic-cervical-disc-rupture-a-case-report
#16
Sung Min Kim, Byeong Sam Choi, Sungjoon Lee
A 38-year-old man visited our Emergency Department for sudden onset paraplegia that occurred 1 hour ago. He felt a piercing pain in the posterior neck and became paraplegic while he was watching television, lying down on a sofa. Neurological examination showed motor power grades II-III in both arms and grade 0 in both legs. His cervical magnetic resonance imaging (MRI) showed a large ruptured disc at the C5-6 level, severely compressing the spinal cord. Emergency anterior cervical discectomy and fusion at C5-6 were performed...
December 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/29301040/where-and-when-to-cut-fluorescein-guidance-for-brain-stem-and-spinal-cord-tumor-surgery-technical-note
#17
Eric Suero Molina, Walter Stummer
BACKGROUND: Spinal cord and brain stem lesions require a judicious approach with an optimized trajectory due to a clustering of functions on their surfaces. Intraoperative mapping helps locate function. To confidently locate such lesions, neuronavigation alone lacks the desired accuracy and is of limited use in the spinal cord. OBJECTIVE: To evaluate the clinical value of fluoresceins for initial delineation of such critically located lesions. METHODS: We evaluated fluorescein guidance in the surgical resection of lesions with blood-brain barrier disruption demonstrating contrast enhancement in magnet resonance imaging in the spinal cord and in the brain stem in 3 different patients...
December 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29300252/a-follow-up-study-of-postoperative-dcm-patients-using-diffusion-mri-with-dti-and-noddi
#18
Xiaodong Ma, Xiao Han, Wen Jiang, Jinchao Wang, Zhe Zhang, Guangqi Li, Jieying Zhang, Xiaoguang Cheng, Huijun Chen, Hua Guo, Wei Tian
STUDY DESIGN: A retrospective cohort study. OBJECTIVE: To investigate the relationship between spinal cord microstructures and spinal cord dysfunction in degenerative cervical myelopathy (DCM) patients, a follow-up study was carried out using diffusion tensor imaging (DTI) and neurite orientation dispersion and density imaging (NODDI), an advanced diffusion model. SUMMARY OF BACKGROUND DATA: DTI has been used for diagnosis of DCM. Though DTI has advantages of high sensitivity and quantitative features, it is limited by its low specificity for measuring microstructures...
January 3, 2018: Spine
https://www.readbyqxmd.com/read/29299101/rib-head-dislocation-causing-spinal-canal-stenosis-in-a-child-with-neurofibromatosis-type-1
#19
Alan M Chen, Jeffrey B Neustadt, Jennifer Neville Kucera
A 10-year-old female with neurofibromatosis type 1 and severe dystrophic scoliosis presented with a two-month history of difficulty ambulating due to low back pain. The patient did not have any neurological symptoms. MRI of the thoracolumbar spine demonstrated subluxation of the right posterior tenth and eleventh ribs through their respective neural foramina, with mild mass effect on the thecal sac without abnormal cord signal or cord compression. Groups of neurofibromas were present along the right ribs and paravertebral soft tissues around these levels...
August 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29298564/diffusion-tensor-imaging-of-scarring-necrosis-and-cavitation-based-on-histopathological-findings-in-dogs-with-chronic-spinal-cord-injury-evaluation-of-multiple-diffusion-parameters-and-their-correlations-with-histopathological-findings
#20
Hakyoung Yoon, Won-Jin Moon, Sang-Soep Nahm, Jaehwan Kim, Kidong Eom
The use of diffusion tensor imaging (DTI) for the characterization of various lesion types in dogs with spinal cord injury (SCI) has not been investigated. The purpose of this study was to characterize scarring [loose immature scarring (LIMS), intermediate mature scarring (IMS), and dense mature scarring (DMS)], necrosis, cavitation, and acute hemorrhage using multiple DTI parameters and determine the correlations between the DTI parameters and histopathological finding in dogs with controlled SCI. All imaging data were obtained from the lumbar spinal cord (from L1 to L3) of normal and SCI dogs using a 3-Tesla magnetic resonance imaging scanner...
January 3, 2018: Journal of Neurotrauma
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