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https://www.readbyqxmd.com/read/27935559/application-of-a-model-to-analyze-shoulder-biomechanics-in-adult-patients-with-spinal-cord-injury-when-walking-with-crutches-in-two-different-gait-patterns
#1
Enrique Perez-Rizo, Fernando Trincado-Alonso, Soraya Pérez-Nombela, Antonio Del Ama-Espinosa, Fernando Jiménez-Díaz, Vicente Lozano-Berrio, Angel Gil-Agudo
BACKGROUND: Specific biomechanical models have been developed to study gait using crutches. Clinical application of these models is needed in adult spinal cord injury (SCI) population walking with different patterns of gait with crutches to prevent overuse shoulder injuries. OBJECTIVE: To apply a biomechanical model in a clinical environment to analyze shoulder in adult SCI patients walking with two different patterns of gait with crutches: two point reciprocal gait (RG) and swing-through gait (SG)...
December 8, 2016: NeuroRehabilitation
https://www.readbyqxmd.com/read/27935448/diagnostic-accuracy-of-motor-evoked-potentials-to-detect-neurological-deficit-during-idiopathic-scoliosis-correction-a-systematic-review
#2
Parthasarathy D Thirumala, Donald J Crammond, Yoon K Loke, Hannah L Cheng, Jessie Huang, Jeffrey R Balzer
OBJECTIVE The goal of this study was to evaluate the efficacy of intraoperative transcranial motor evoked potential (TcMEP) monitoring in predicting an impending neurological deficit during corrective spinal surgery for patients with idiopathic scoliosis (IS). METHODS The authors searched the PubMed and Web of Science database for relevant lists of retrieved reports and/or experiments published from January 1950 through October 2014 for studies on TcMEP monitoring use during IS surgery. The primary analysis of this review fit the operating characteristic into a hierarchical summary receiver operating characteristic curve model to determine the efficacy of intraoperative TcMEP-predicted change...
December 9, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27935101/gpnmb-ameliorates-mutant-tdp-43-induced-motor-neuron-cell-death
#3
Yuki Nagahara, Masamitsu Shimazawa, Kazuki Ohuchi, Junko Ito, Hitoshi Takahashi, Kazuhiro Tsuruma, Akiyoshi Kakita, Hideaki Hara
Glycoprotein nonmetastatic melanoma protein B (GPNMB) aggregates are observed in the spinal cord of amyotrophic lateral sclerosis (ALS) patients, but the detailed localization is still unclear. Mutations of transactive response DNA binding protein 43kDa (TDP-43) are associated with neurodegenerative diseases including ALS. In this study, we evaluated the localization of GPNMB aggregates in the spinal cord of ALS patients and the effect of GPNMB against mutant TDP-43 induced motor neuron cell death. GPNMB aggregates were not localized in the glial fibrillary acidic protein (GFAP)-positive astrocyte and ionized calcium binding adaptor molecule-1 (Iba1)-positive microglia...
December 9, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27934789/a-3d-map-of-the-hindlimb-motor-representation-in-the-lumbar-spinal-cord-in-sprague-dawley-rats
#4
Jordan A Borrell, Shawn B Frost, Jeremy Peterson, Randolph J Nudo
OBJECTIVE: Spinal cord injury (SCI) is a devastating neurological trauma with a prevalence of about 282 000 people living with an SCI in the United States in 2016. Advances in neuromodulatory devices hold promise for restoring function by incorporating the delivery of electrical current directly into the spinal cord grey matter via intraspinal microstimulation (ISMS). In such designs, detailed topographic maps of spinal cord outputs are needed to determine ISMS locations for eliciting hindlimb movements...
December 9, 2016: Journal of Neural Engineering
https://www.readbyqxmd.com/read/27934764/gliogenic-ltp-spreads-widely-in-nociceptive-pathways
#5
M T Kronschläger, R Drdla-Schutting, M Gassner, S D Honsek, H L Teuchmann, J Sandkühler
Learning and memory formation involve long-term potentiation (LTP) of synaptic strength. A fundamental feature of LTP induction in the brain is the need for coincident pre- and postsynaptic activity. This restricts LTP expression to activated synapses only (homosynaptic LTP) and leads to its input specificity. In the spinal cord, we discovered a fundamentally different form of LTP that is induced by glial cell activation and mediated by diffusible, extracellular messengers, including d-serine and tumor necrosis factor (TNF), and that travel long distances via the cerebrospinal fluid, thereby affecting susceptible synapses at remote sites...
December 2, 2016: Science
https://www.readbyqxmd.com/read/27933873/amelioration-of-experimental-autoimmune-encephalomyelitis-by-isogarcinol-extracted-from-garcinia-mangostana-l-mangosteen
#6
Mengqi Wang, Yufei Xie, Youxiu Zhong, Juren Cen, Lei Wang, Yuanyuan Liu, Ying Zhu, Li Tong, Qun Wei
Isogarcinol is a new natural immunosuppressant that was extracted from Garcinia mangostana L. in our laboratory. Knowledge of its effects on treatable diseases and its mechanism of action is still very limited. In this study, we explored the therapeutic effect of isogarcinol in experimental autoimmune encephalomyelitis (EAE), a murine model of multiple sclerosis (MS). Treatment with oral 100 mg/kg isogarcinol markedly ameliorated clinical scores, alleviated inflammation and demyelination of the spinal cord, and reduced intracranial lesions in EAE mice...
November 30, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27933549/demyelination-occurred-as-the-secondary-damage-following-diffuse-axonal-loss-in-a-rat-model-of-radiation-myelopathy
#7
Li Wei, Yong Zhou, Chang-Jiang Liu, Ke Zheng, Hua You
The main purpose of the present study was to examine the time and dose-dependent course of demyelination in the rat radiation myelopathy model in the first 180 days after irradiation of the spinal cord. An irradiated cervical spinal cord rat model (C2-T2 segment) was generated using a (60)Co irradiator to deliver 50 Gy and 100 Gy, respectively. The behavioral dysfunction was observed by the forelimb paralysis scoring system. The histological damage in the irradiated spinal cord was examined by hematoxylin/eosin staining, luxol fast blue staining, immunohistochemical analysis, methylene blue/Azure II staining, and uranyl/lead salts staining...
December 8, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27933357/bilateral-increases-in-erk-activation-at-the-spinomedullary-junction-region-by-acute-masseter-muscle-injury-during-temporomandibular-joint-inflammation-in-the-rats
#8
Masayuki Kurose, Hiroki Imbe, Yosuke Nakatani, Mana Hasegawa, Noritaka Fujii, Ritsuo Takagi, Kensuke Yamamura, Emiko Senba, Keiichiro Okamoto
We determined the role of persistent monoarthritis of temporomandibular joint region (TMJ) on bilateral masseter muscle (MM) nociception in male rats using orofacial nocifensive behaviors, phosphorylated extracellular signal-regulated kinase and Fos induction at the trigeminal subnucleus caudalis/upper cervical spinal cord (Vc/C2) region in response to formalin injection to the MM region. TMJ inflammation was induced by local injection of CFA into the left TMJ region. Orofacial nocifensive behaviors evoked by formalin injection ipsilateral or contralateral to the TMJ inflammation appeared to be increased at 1-14 days or at 1, 10 and 14 days after induction of TMJ inflammation, respectively, while increases in behavioral duration were seen mainly in the late phase rather than the early phase...
December 8, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27933308/tailored-transgene-expression-to-specific-cell-types-in-the-central-nervous-system-after-peripheral-injection-with-aav9
#9
Jonathan Dashkoff, Eli P Lerner, Nhi Truong, Jacob A Klickstein, Zhanyun Fan, Dakai Mu, Casey A Maguire, Bradley T Hyman, Eloise Hudry
The capacity of certain adeno-associated virus (AAV) vectors to cross the blood-brain barrier after intravenous delivery offers a unique opportunity for noninvasive brain delivery. However, without a well-tailored system, the use of a peripheral route injection may lead to undesirable transgene expression in nontarget cells or organs. To refine this approach, the present study characterizes the transduction profiles of new self-complementary AAV9 (scAAV9) expressing the green fluorescent protein (GFP) either under an astrocyte (glial fibrillary acidic (GFA) protein) or neuronal (Synapsin (Syn)) promoter, after intravenous injection of adult mice (2 × 10(13) vg/kg)...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27932896/involvement-of-spinal-glutamate-transporter-1-in-the-development-of-mechanical-allodynia-and-hyperalgesia-associated-with-type-2-diabetes
#10
Jinshan Shi, Ke Jiang, Zhaoduan Li
Little is known about the effects of the development of type 2 diabetes on glutamate homeostasis in the spinal cord. Therefore, we quantified the extracellular levels of glutamate in the spinal cord of Zucker diabetic fatty (ZDF) rats using in vivo microdialysis. In addition, protein levels of glutamate transporter-1 (GLT-1) in the spinal cord of ZDF rats were measured using Western blot. Finally, the effects of repeated intrathecal injections of ceftriaxone, which was previously shown to enhance GLT-1 expression, on the development of mechanical allodynia and hyperalgesia as well as on basal extracellular level of glutamate and the expression of GLT-1 in the spinal cord of ZDF rats were evaluated...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27932790/motor-neurons-derived-from-als-related-mouse-ips-cells-recapitulate-pathological-features-of-als
#11
Ju-Hwang Park, Hang-Soo Park, Sunghoi Hong, Seongman Kang
Amyotrophic lateral sclerosis (ALS) is a late-onset progressive neurodegenerative disease characterized by the loss of motor neurons in the spinal cord and brain. Mutations in Cu/Zn superoxide dismutase 1 (SOD1) are known to induce ALS. Although many research models have been developed, the exact pathological mechanism of ALS remains unknown. The recently developed induced pluripotent stem (iPS) cell technology is expected to illuminate the pathological mechanisms and new means of treatment for neurodegenerative diseases...
December 9, 2016: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/27932767/-mid-and-long-term-result-of-celiac-artery-coverage-in-tevar-treatment-for-aortic-dissection
#12
Ming Li, Chang Shu, Quanming Li, Tun Wang, Kun Fang
To observe the mid- and long-term result of intentional coverage of celiac artery in thoracic endovascular aortic repair (TEVAR) surgery for aortic dissection.
 Methods: We retrospectively analyzed 21 cases who received TEVAR with celiac artery coverage during the operation. The existence of collaterals between celiac artery (CA) and superior mesenteric artery (SMA) was confirmed by preoperative CT angiography (CTA) or digital substract angiography (DSA) for each patient. We used the stent-graft precisely above the orifice of SMA...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27932751/-a-case-of-subacute-combined-degeneration-caused-by-vitamin-b-sub-12-sub-deficiency-in-a-cervical-spondylosis-surgery-referral
#13
Kunio Yokoyama, Masahiro Kawanishi, Akira Sugie, Makoto Yamada, Hidekazu Tanaka, Yutaka Ito, Toshihiko Kuroiwa
A 62-year-old man with a 1-year history of numbness of the extremities, clumsiness, and gait disorder was diagnosed with cervical spondylotic myelopathy at a neighboring clinic and referred to our institution for surgery. The patient had undergone a total gastrectomy 6 years previously. Flattening of the cervical cord, associated with diffuse cervical spondylosis and intramedullary intensity change, was observed on magnetic resonance imaging of the cervical spine. Neurological examination revealed decreased vibratory and position sense in all limbs, with posterior funiculus-based neurological symptoms...
December 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27932747/-a-rare-case-of-metastatic-brain-tumors-in-the-bilateral-cerebellopontine-angles
#14
Yasuhiro Node, Naoyuki Harada, Hiroyuki Masuda, Kosuke Kondo, Masaaki Nemoto, Nobuo Sugo
We encountered a rare case of metastatic brain tumors in the bilateral cerebellopontine angles. The patient was a 61-year-old man, who visited an otorhinolaryngology clinic with complaints of rapidly progressing bilateral hearing impairment and facial palsy. The patient was referred to our hospital because tumorous lesions were suspected in the bilateral cerebellopontine angles on brain magnetic resonance imaging. Regarding tumor markers, the patient's cancer antigen 19-9 and carcinoembryonic antigen levels were high, which suggested metastasis...
December 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27932680/trans-spinal-direct-current-stimulation-modulates-migration-and-proliferation-of-adult-newly-born-spinal-cells-in-mice
#15
Sreyashi Samaddar, Kizzy Vazquez, Dipen Ponika, Pedro Toruno, Karim Sahbani, Sultana Begum, Ahmed Abouelela, Wagdy Mekhael, Zaghloul Ahmed
Direct current electrical fields have been shown to be a major factor in the regulation of cell proliferation, differentiation, migration, and survival, as well as in the maturation of dividing cells during development. During adulthood, spinal cord cells are continuously produced in both animals and humans, and they hold great potential for neural restoration following spinal cord injury. While the effects of direct current electrical fields on adult-born spinal cells cultured ex vivo have recently been reported, the effects of direct current electrical fields on adult-born spinal cells in vivo have not been characterized...
December 8, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27932591/the-cellular-diversity-of-the-pedunculopontine-nucleus-relevance-to-behavior-in-health-and-aspects-of-parkinson-s-disease
#16
REVIEW
Ilse S Pienaar, Anthony Vernon, Philip Winn
The pedunculopontine nucleus (PPN) is a rostral brainstem structure that has extensive connections with basal ganglia nuclei and the thalamus. Through these the PPN contributes to neural circuits that effect cortical and hippocampal activity. The PPN also has descending connections to nuclei of the pontine and medullary reticular formations, deep cerebellar nuclei, and the spinal cord. Interest in the PPN has increased dramatically since it was first suggested to be a novel target for treating patients with Parkinson's disease who are refractory to medication...
December 7, 2016: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/27932511/ascending-and-descending-thoracic-vertebral-arteries
#17
P Gailloud, L Gregg, M S Pearl, D San Millan
Thoracic vertebral arteries are anastomotic chains similar to cervical vertebral arteries but found at the thoracic level. Descending thoracic vertebral arteries originate from the pretransverse segment of the cervical vertebral artery and curve caudally to pass into the last transverse foramen or the first costotransverse space. Ascending thoracic vertebral arteries originate from the aorta, pass through at least 1 costotransverse space, and continue cranially as the cervical vertebral artery. This report describes the angiographic anatomy and clinical significance of 9 cases of descending and 2 cases of ascending thoracic vertebral arteries...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27932310/loss-of-dopamine-d1-receptors-and-diminished-d1-5-receptor-mediated-erk-phosphorylation-in-the-periaqueductal-gray-after-spinal-cord-lesion
#18
Pamela J Voulalas, Yadong Ji, Li Jiang, Jamila Asgar, Jin Y Ro, Radi Masri
Neuropathic pain resulting from spinal cord injury is often accompanied by maladaptive plasticity of the central nervous system, including the opioid receptor-rich periaqueductal gray (PAG). Evidence suggests that sensory signaling via the PAG is robustly modulated by dopamine D1- and D2-like receptors, but the effect of damage to the spinal cord on D1 and D2 receptor protein expression and function in the PAG has not been examined. Here we show that 21 days after a T10 or C6 spinothalamic tract lesion, both mice and rats display a remarkable decline in the expression of D1 receptors in the PAG, revealed by western blot analysis...
December 5, 2016: Neuroscience
https://www.readbyqxmd.com/read/27931505/phase-iii-clinical-trial-assessing-safety-and-efficacy-of-umbilical-cord-blood-mononuclear-cell-transplant-therapy-of-chronic-complete-spinal-cord-injury
#19
Hui Zhu, Waisang Poon, Yansheng Liu, Gilberto Ka-Kit Leung, Yatwa Wong, Yaping Feng, Stephanie C P Ng, Kam Sze Tsang, David T F Sun, David K Yeung, Caihong Shen, Fang Niu, Zhexi Xu, Pengju Tan, Shaofeng Tang, Hongkun Gao, Yun Cha, Kwok-Fai So, Robert Fleischaker, Dongming Sun, John Chen, Jan Lai, Wendy Cheng, Wise Young
Umbilical cord blood-derived mononuclear cell (UCB-MNC) transplants improve recovery in animal spinal cord injury (SCI) models. We transplanted UCB-MNCs into 28 patients with chronic complete SCI in Hong Kong (HK) and Kunming (KM). Stemcyte Inc. donated UCB-MNCs isolated from human leukocyte antigen (HLA 4:6)-matched UCB units. In HK, four patients received four 4-l injections (1.6 million cells) into dorsal entry zones above and below the injury site, and another four received 8-l injections (3.2 million cells)...
November 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27931169/a-mouse-model-of-bilateral-cervical-contusion-compression-spinal-cord-injury
#20
Nicole Forgione, Mahmood Chamankhah, Michael Fehlings
Cervical spinal cord injury (cSCI) occurs in over half of all cases of traumatic SCI, yet we lack therapies that can generate significant functional recovery in these patients. The development of animal models of cSCI will aid in the pre-clinical assessment of therapies and in understanding basic pathophysiological mechanisms. Here we describe a clinically relevant model of cervical contusion-compression injury in the mouse. Using a modified aneurism clip we generated a bilateral, incomplete injury that mimics contusion-compression injuries most commonly seen in humans...
December 8, 2016: Journal of Neurotrauma
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