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https://www.readbyqxmd.com/read/29160240/remapping-cortical-modulation-for-electrocorticographic-brain-computer-interfaces-a-somatotopy-based-approach-in-individuals-with-upper-limb-paralysis
#1
Alan D Degenhart, Shivayogi V Hiremath, Ying Yang, Stephen T Foldes, Jennifer L Collinger, Michael L Boninger, Elizabeth C Tyler-Kabara, Wei Wang
OBJECTIVE: Brain-computer interface (BCI) technology aims to provide individuals with paralysis a means to restore function. Electrocorticography (ECoG) uses disc electrodes placed on either the surface of the dura or the cortex to record field potential activity. ECoG has been proposed as a viable neural recording modality for BCI systems, potentially providing stable, long-term recordings of cortical activity with high spatial and temporal resolution. Previously we have demonstrated that a subject with spinal cord injury (SCI) could control an ECoG-based BCI system with up to three degrees of freedom [Wang et al...
November 21, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29157950/-knowledge-beliefs-and-attitudes-of-the-roma-population-regarding-colorectal-cancer-screening
#2
María Carmen Santiago-Portero, José Manuel Gómez-García, Helena Reig-Gómez, Tatiana Oltra-Durá, Juan José Gascón-Cánovas
OBJECTIVE: To identify predisposing, inhibitory and facilitating factors that may affect participation in colorectal cancer screening programs in the Roma population. METHOD: Qualitative and exploratory study by focus group technique. Three focus groups of men and three groups of women were carried out, with a total of 16 men and 18 women from the Roma population, aged 50-69 years, from the province of Alicante. A discourse analysis was performed with the PRECEDE model as an analysis framework...
November 17, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/29157748/consensus-contouring-guidelines-for-postoperative-completely-resected-cavity-stereotactic-radiosurgery-for-brain-metastases
#3
Hany Soliman, Mark Ruschin, Lilyana Angelov, Paul D Brown, Veronica L S Chiang, John P Kirkpatrick, Simon S Lo, Anita Mahajan, Kevin S Oh, Jason P Sheehan, Scott G Soltys, Arjun Sahgal
PURPOSE: To propose contouring guidelines based on consensus contours generated by 10 international experts for cavity stereotactic radiosurgery (SRS), an emerging treatment option after surgical resection of brain metastases. No guidelines for contouring the surgical cavity volume have been previously reported. METHODS AND MATERIALS: Ten postoperative completely resected cases with varying clinical scenarios and locations within the brain were selected. For each case, 10 experts independently contoured the surgical cavity clinical target volume (CTV)...
October 4, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29155345/the-relationship-between-hematoma-and-pachymeninges-in-an-interdural-hematoma-diagnosis-and-surgical-strategy
#4
Ko-Ting Chen, Hsu-Chen Huang, Ya-Jui Lin, Ming-Houng Chen, Tsung-Che Hsieh
BACKGROUND: The exact location of a hematoma in relation to the pachymeninges contributes to typical radiographic presentations. However, because of the complexity of hematoma evolution and neomembrane formation, an unexpected intraoperative finding may lead to a change of surgical strategy. Besides, the concentration of hemoglobin and its degradation products, the integrity of red blood cells (RBCs), and the infiltration of fibroblasts, polymorphonuclear neutrophils, and macrophages are factors that affect the imaging characteristics on computed tomography (CT) and magnetic resonance imaging (MRI) as the hematoma ages...
November 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29155111/surgical-treatment-of-spinal-synovial-cysts-in-the-elderly-symptoms-treatment-course-and-outcome-in-patients-over-75-years
#5
Markus Bruder, Florian Gessler, Adriano Cattani, Christian Droste, Volker Seifert, Matthias Setzer, Gerhard Marquardt
OBJECTIVE: The ongoing aging of our society leads to a rising number of elderly patients with progressive degeneration of the spine, associated with synovial cysts. In the elderly, surgical treatment may be particularly challenging because of comorbidities. METHODS: Patients treated in our department between 1999 and 2014 for spinal synovial cysts were screened. The 28 patients aged 75 years and older were classified as "elderly". Those were compared with 96 patients between 50 and 74 years...
November 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29148904/randomized-controlled-study-comparing-2-surgical-techniques-for-decompressive-craniectomy-with-watertight-duraplasty-and-without-watertight-duraplasty
#6
Eduardo Vieira, Thiago C Guimarães, Igor V Faquini, Jose L Silva, Tammy Saboia, Rodrigo V C L Andrade, Thaís L Gemir, Valesca C Neri, Nivaldo S Almeida, Hildo R C Azevedo-Filho
OBJECTIVE Decompressive craniectomy (DC) is a widely used procedure in neurosurgery; however, few studies focus on the best surgical technique for the procedure. The authors' objective was to conduct a prospective randomized controlled trial comparing 2 techniques for performing DC: with watertight duraplasty and without watertight duraplasty (rapid-closure DC). METHODS The study population comprised patients ranging in age from 18 to 60 years who were admitted to the Neurotrauma Service of the Hospital da Restauração with a clinical indication for unilateral decompressive craniectomy...
November 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29145877/trajectory-of-instantaneous-axis-of-rotation-in-fixed-lumbar-spine-with-instrumentation
#7
Masataka Inoue, Tetsutaro Mizuno, Toshihiko Sakakibara, Takaya Kato, Takamasa Yoshikawa, Tadashi Inaba, Yuichi Kasai
BACKGROUND: Several studies showed instantaneous axis of rotation (IAR) in the intact spine. However, there has been no report on the trajectory of the IAR of a damaged spine or that of a fixed spine with instrumentation. It is the aim of this study to investigate the trajectory of the IAR of the lumbar spine using the vertebra of deer. METHODS: Functional spinal units (L5-6) from five deer were evaluated with six-axis material testing machine. As specimen models, we prepared a normal model, a damaged model, and a pedicle screw (PS) model...
November 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29142775/-relevance-of-simpson-s-grades-in-the-resection-of-grade-i-meningiomas
#8
Pablo Ajler, Sofía Beltrame, Daniela Massa, Julian Tramontano, Matteo Baccanelli, Claudio Yampolsky
Objective: Compare the number of recurrences in patients with WHO Grade I meningiomas that underwent microsurgical resection. Introduction: In 1957 Simpson established five grades for surgical resection for intracranial meningiomas and recurrence rate. He thought that an aggressive removal of these tumors with dura and bone was necessary to cure them. Development of new diagnostic methods, advances in anatomopathology and microsurgical technique lead us to question if this scale has a value nowadays...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29138973/surgical-ligation-of-spinal-dural-arteriovenous-fistula
#9
Thomas Sorenson, Enrico Giordan, Delia Cannizzaro, Giuseppe Lanzino
BACKGROUND: Spinal dural arteriovenous fistulas (SDAVFs) are abnormal arteriovenous shunts between a radicular artery and the radicular vein, located in the dorsal surface of the dura sleeve, which drains in a retrograde manner into the coronal venous plexus of the spinal cord without an interposed capillary network. This result is a venous hypertension that reduces spinal cord perfusion and leads to ischemia and edema. Spontaneous resolution is extremely rare and, once symptomatic, the typical course is further progression with increased neurological impairment...
November 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29133178/lymphatic-vasculature-in-human-dural-superior-sagittal-sinus-implications-for-neurodegenerative-proteinopathies
#10
Naomi P Visanji, Anthony E Lang, David G Munoz
Recent reports have characterized functional lymphatic vessels, which drain both fluid and immune cells from the CSF to the deep cervical lymph nodes, lining the dural sinuses in mice. If conserved in the human brain these vessels could have profound implications for neuroinflammatory and neurodegenerative diseases. We provide evidence of the presence of lymphatic vessels in human dura obtained at autopsy, at the level of the superior sagittal sinus, in 4 individuals. Immunohistochemistry for the lymphatic vessel endothelial cell marker podoplanin revealed the widespread presence of multiple structures with a distinct lumen distributed throughout the superior sagittal sinus...
November 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29131674/congenital-malformations-resembling-vacterl-association-in-a-golden-retriever
#11
Araceli Gamito-Gómez, Rodrigo Gutierrez-Quintana, Annette Wessmann
A 2 mo old golden retriever presented with malformation of the left thoracic limb and a small circular indentation of the skin in the cranial thoracic spine. Radiographs showed a cleft between the second and fifth metacarpal bones of the left thoracic limb compatible with ectrodactyly and spina bifida affecting T4 and T5 vertebrae. Magnetic resonance imaging of the thoracic spine showed dorsal reposition of the spinal cord and a tract connecting from the dura mater to the skin. No other malformations were detected...
November 13, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29130237/in-situ-forming-oxidised-hyaluronic-acid-adipic-acid-dihydrazide-hydrogel-for-prevention-of-epidural-fibrosis-after-laminectomy
#12
M H Hu, K C Yang, Y H Sun, Y C Chen, S H Yang, F H Lin
Post-operative epidural fibrosis is a biological response after laminectomy that may lead to clinical symptoms, such as radicular pain. An ideal material for prevention of epidural fibrosis should be able to inhibit fibroblast adhesions and reduce formation of scar tissue. An injectable hydrogel would be the material of choice for this purpose, since it could fill an irregular surgical defect completely, gelate in situ and be delivered in a minimally-invasive manner. The objective of this study was to evaluate, in vitro and in vivo, the cytocompatibility and anti-adhesive effect of an oxidised hyaluronic acid/adipic acid dihydrazide (oxi-HA/ADH) hydrogel...
November 13, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/29129155/transgenerational-inheritance-of-familial-lipomyelomeningocele
#13
Thomas Larrew, Ramin Eskandari, Kenton R Holden, Amy Chen, Catherine J Spellicy, Julie R Jones, Jennifer A Lee, Michael J Lyons
Lipomyelomeningocele is a type of neural tube defect characterized by lipomatous tissue causing a defect in the vertebrae, infiltrating the dura, and tethering the spinal cord. Despite significant neurologic consequences, the underlying etiology remains poorly understood. We present a father and son with remarkably similar presentations of lipomyelomeningocele. Genetic testing did not reveal an underlying cause but whole exome sequencing identified variants in the ARHGAP29 and RADIL genes in the proband and his affected father...
December 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/29128957/expression-of-glut-1-in-malignant-melanoma-and-melanocytic-nevi-an-immunohistochemical-study-of-400-cases
#14
Miroslav Důra, Kristýna Němejcová, Radek Jakša, Michaela Bártů, Ondřej Kodet, Ivana Tichá, Romana Michálková, Pavel Dundr
The glucose transporter-1 (Glut-1) is a cell membrane glycoprotein involved in glucose uptake. An increased expression of Glut-1 is an important cell adaptation mechanism against hypoxia. An upregulation of Glut-1 can be found in several types of malignant tumors, which are able to reprogram their metabolism from oxidative phosphorylation to aerobic glycolysis (Warburg effect). However, the data regarding melanocytic lesions is equivocal. We performed comprehensive immunohistochemical analysis of the Glut-1 expression in 225 malignant melanomas (MM) and 175 benign nevi...
November 11, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29125056/monosodium-glutamate-and-treadmill-exercise-anxiety-like-behavior-and-spreading-depression-features-in-young-adult-rats
#15
Suênia Marcele Vitor-de-Lima, Larissa de Brito Medeiros, Regina de Deus Lira Benevides, Catarina Nicácio Dos Santos, Nahara Oliveira Lima da Silva, Rubem Carlos Araújo Guedes
OBJECTIVES: The route of administration is an important factor in determining the action of some drugs. We previously demonstrated that subcutaneous monosodium glutamate (MSG) accelerated cortical spreading depression (CSD) in the rat and that treadmill exercise attenuated this effect. This study evaluated whether other routes of administration exert the same action by testing orogastric (gavage) and topical cortical MSG administration in treadmill-exercised and sedentary rats. Additionally, in the orogastric treatment we tested anxiety-like behavior...
November 10, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29119714/cross-cultural-adaptation-and-validation-of-the-spanish-version-of-the-paediatric-throat-disorders-outcome-test-t-14
#16
Francisco Larrosa, Laura Samara, Eduard Esteller, Maria J Dura, Yolanda Escamilla, Anna Alberti, Rosa Rosell, Claire Hopkins
OBJECTIVES: The Paediatric Throat Disorders Outcome Test (T-14) is a disease-specific questionnaire that parents are requested to complete; it aims to assess the quality of life related to tonsil and adenoid disease or its treatment in children with throat disorders. The aim of this study was to validate the Spanish adaptation of the T-14, thus allowing comparison across studies and facilitating international multicentre projects. DESIGN, SETTING AND PARTICIPANTS: This was a multicentre prospective instrument validation study...
November 9, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29119040/giant-mucopyocele-associated-with-intracranial-hypertension-case-report-and-literature-review
#17
Maick Willen Fernandes Neves, Luis Otavio Carneiro Pontelli, Luiz Gustavo de Abreu Mattos, Mariana Mazzuia Guimarães, Telmo Augusto Barba Belsuzarri, Tiago Fernandes Gonçales, Wolnei Marques Zeviani, Paulo Henrique Pires de Aguiar, João Flavio Mattos Araújo
Background: Mucoceles are epithelial lined sacs that contain mucous. Eventually, they can be infected and so called mucopyoceles, which are usually slow growing lesions with common bone destruction located in the facial sinus. Mucoceles show multivariate etiology and occur between the fourth and seventh decade of life. Case Description: Patient, 55-year-old, female, was referred unconscious with Cushing's triad to our department; she had fever since four days. The findings of skull computer tomography highlighted a large bifrontal lesion with an invasion of the rear wall of the frontal sinus, compression of the frontal lobes, and midline deviation...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29116488/the-relationship-between-clavien-dindo-morbidity-classification-and-oncologic-outcomes-after-colorectal-cancer-resection
#18
Leonardo C Duraes, Luca Stocchi, Scott R Steele, Matthew F Kalady, James M Church, Emre Gorgun, David Liska, Hermann Kessler, Olga A Lavryk, Conor P Delaney
BACKGROUND: Limited data on the relationship between postoperative complications (POCs) after colorectal cancer resection and oncologic outcomes are available. We hypothesized that the increased severity of POCs is associated with progressively worse oncologic outcomes. METHODS: Patients with pathological stages I-III colorectal adenocarcinoma undergoing elective curative resection in a single institution between 2000 and 2012 were identified from a prospectively collected database...
November 7, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29116469/brca1-deficiency-is-a-recurrent-event-in-early-onset-triple-negative-breast-cancer-a-comprehensive-analysis-of-germline-mutations-and-somatic-promoter-methylation
#19
Rafael Canfield Brianese, Kivvi Duarte de Mello Nakamura, Fernanda Gabriella Dos Santos Ramos de Almeida, Rodrigo Fernandes Ramalho, Bruna Durães de Figueiredo Barros, Elisa Napolitano E Ferreira, Maria Nirvana da Cruz Formiga, Victor Piana de Andrade, Vladmir Claudio Cordeiro de Lima, Dirce Maria Carraro
PURPOSE: BRCA1 germline mutation is closely associated with triple-negative breast cancer. BRCA deficiency leads to impaired DNA repair and tumor development, and understanding this deficiency, in both hereditary and sporadic scenarios, is of great clinical and biological interest. Here, we investigated germline or somatic events that might lead to BRCA1 impairment in triple-negative breast cancer. We also analyzed the clinical implications associated with BRCA deficiency. METHODS: Next-generation sequencing for the BRCA1/2 genes and multiplex ligation-dependent probe amplification (MLPA) for the BRCA1 gene were performed for mutation screening...
November 7, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29116395/correlations-between-sedimentation-sign-dural-sac-cross-sectional-area-and-clinical-symptoms-of-degenerative-lumbar-spinal-stenosis
#20
Sangbong Ko
PURPOSE: In this study, we addressed the correlation between the cross-sectional area (CSA) of the dural sac and the nerve root sedimentation sign (SedSign) and the correlation between the distance of claudication and the CSA of the dural sac or SedSign in patients with lumbar spinal stenosis. We also evaluated the reliability of clinical symptom prediction. METHODS: We checked claudication distance using a questionnaire, and we gauged low back pain when standing, referred pain, and radiating pain using visual analog scale scores...
November 7, 2017: European Spine Journal
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