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https://www.readbyqxmd.com/read/28742044/multipolar-field-shaping-in-a-suprachoroidal-visual-prosthesis
#1
Calvin D Eiber, Socrates Dokos, Nigel H Lovell, Gregg J Suaning
Visual prostheses are now an available mobility aid for patients blinded by degenerative retinal diseases. However, the spatial resolution of existing devices is still insufficient to deliver normal levels of mobility vision without stimulation strategies which enable existing devices to deliver several different percepts per stimulation site. A stimulation strategy in which field shaping is achieved by incorporating multipolar (bipolar and tripolar) stimulation could convey additional information to a user of a visual prosthesis, as compared to monopolar stimulation, is investigated...
July 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28742022/modeling-of-axonal-endoplasmic-reticulum-network-by-spastic-paraplegia-proteins
#2
Belgin Yalçın, Lu Zhao, Martin Stofanko, Niamh C O'Sullivan, Zi Han Kang, Annika Roost, Matthew R Thomas, Sophie Zaessinger, Olivier Blard, Alex L Patto, Anood Sohail, Valentina Baena, Mark Terasaki, Cahir J O'Kane
Axons contain a smooth tubular endoplasmic reticulum (ER) network that is thought to be continuous with ER throughout the neuron; the mechanisms that form this axonal network are unknown. Mutations affecting reticulon or REEP proteins, with intramembrane hairpin domains that model ER membranes, cause an axon degenerative disease, hereditary spastic paraplegia (HSP). We show that Drosophila axons have a dynamic axonal ER network, which these proteins help to model. Loss of HSP hairpin proteins causes ER sheet expansion, partial loss of ER from distal motor axons, and occasional discontinuities in axonal ER...
July 25, 2017: ELife
https://www.readbyqxmd.com/read/28741676/the-association-of-abdominal-muscle-with-outcomes-after-scheduled-abdominal-aortic-aneurysm-repair
#3
N Shah, L Abeysundara, P Dutta, M Christodoulidou, S Wylie, T Richards, N Schofield
Sarcopenia is the degenerative loss of core muscle mass. It is an aspect of frailty, which is associated with increased rates of peri-operative harm. We assessed the association of the cross-sectional areas of abdominal muscles, including psoas, with survival during a median (IQR [range]) follow-up of 3.8 (3.2-4.4 [0.0-5.1]) years after scheduled endovascular (132) or open (5) abdominal aortic aneurysm repair in 137 patients. In multivariate analysis, mortality hazard (95%CI) was independently associated with: age, 1...
July 25, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28741218/asymmetric-pedicle-subtractionosteotomy-apso-guided-by-a-3d-printed-model-to-correct-a-combined-fixed-sagittal-and-coronal-imbalance
#4
Pierre-Pascal Girod, S Hartmann, P Kavakebi, J Obernauer, M Verius, C Thomé
Surgical correction of fixed thoracolumbar deformity is usually achieved by estimating the preoperatively planned correction angles during surgery and is therefore prone to inaccuracy. This is particularly problematic in biplanar deformities. To overcome these difficulties, 3D model for planning, preparation, and simulation of an asymmetric pedicle subtraction osteotomy (aPSO) was printed and used to realign coronal and sagittal balance in case of rigid degenerative kyphoscoliosis. A 59-year-old woman presented with severe back pain and spinal claudication and was diagnosed with a rigid kyphoscoliosis with multilevel spinal stenosis...
July 24, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28741147/constipation-in-degenerative-cervico-thoracic-spine-myelopathy-a-simple-co-existence-or-a-complex-inter-relationship
#5
Anant Mehrotra, Janmejay Jamdar, Pradeep Sharma, Chaitanya Godbole, Suyash Singh, Kuntal Kanti Das, Abhai Verma, Kamlesh Singh Bhaisora, Jayesh Sardhara, Awadhesh Kumar Jaiswal, Rabi Narayan Sahu, Arun Kumar Srivastava, Sanjay Behari, Raj Kumar
PURPOSE: Identify factors affecting constipation and post surgical improvement in patients of myelopathy. METHODS: Sixty-four patients with myelopathy due to extradural spine pathologies (47 cervical; 17 thoracic spine, male:female-5.4:1 with mean age 46.16) underwent evaluation including Bristol stool scale (BSS), PFT and uroflowmetry. All cases were evaluated by gastroenterologist to rule out any intrinsic bowel disease. Chi-square test, Kruskal-Wallis/Mann-Whitney U test and Wilcoxon signed rank test were employed to ascertain statistical significance...
July 24, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28739444/small-molecule-therapeutics-for-inflammation-associated-chronic-musculoskeletal-degenerative-diseases-past-present-and-future
#6
REVIEW
Yangwu Chen, Jiayun Huang, Chenqi Tang, Xiao Chen, Zi Yin, Boon Chin Heng, Weishan Chen, Weiliang Shen
Inflammation-associated chronic musculoskeletal degenerative diseases (ICMDDs) like osteoarthritis and tendinopathy often results in morbidity and disability, with consequent heavy socio-economic burden. Current available therapies such as NSAIDs and glucocorticoid are palliative rather than disease-modifying. Insufficient systematic research data on disease molecular mechanism also makes it difficult to exploit valid therapeutic targets. Small molecules are designed to act on specific signaling pathways and/or mechanisms of cellular physiology and function, and have gradually shown potential for treating ICMDDs...
July 21, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28738764/neuroprotection-by-endo-cannabinoids-in-glaucoma-and-retinal-neurodegenerative-diseases
#7
Cinzia Rapino, Daniel Tortolani, Lucia Scipioni, Mauro Maccarrone
Emerging neuroprotective strategies are being explored to preserve the retina from degeneration, that occurs in eye pathologies like glaucoma, diabetic retinopathy, age-related macular degeneration, and retinitis pigmentosa. Incidentally, neuroprotection of retina is a defending mechanism designed to prevent or delay neuronal cell death, and to maintain neural function following an initial insult, thus avoiding loss of vision. Numerous studies have investigated potential neuroprotective properties of plant-derived phytocannabinoids, as well as of their endogenous counterparts collectively termed endocannabinoids (eCBs), in several degenerative diseases of the retina...
July 24, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28738497/oeanolic-acid-protects-against-the-hepatotoxicity-of-d-galactosame-plus-endotoxin-in-mice
#8
Xiao-Li Wan, Yuan-Fu Lu, Shang-Fu Xu, Qin Wu, Jie Liu
Oleanolic acid (OA) is a triterpenoid contained in many herbal medicines. The aim of this study was to investigate the protective effect of OA against D-galactosame plus lipopolysaccharides (D-GalN/LPS)-induced acute liver injury and the underling mechanisms. Mice were randomly divided into normal control with vehicles only (corn oil), D-GalN/LPS only (700mg/10μg/kg, ip), OA-po (200μmol/kg in corn oil, po) plus D-GalN/LPS, and OA-sc (50μmol/kg in 2% tween 80, sc) plus D-GalN/LPS groups. OA pretreatment was conducted twice daily for 4 consecutive days...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738418/molecular-pathway-to-protection-from-age-dependent-photoreceptor-degeneration-in-mef2-deficiency
#9
Saumya Nagar, Dorit Trudler, Scott R McKercher, Juan Piña-Crespo, Nobuki Nakanishi, Shu-Ichi Okamoto, Stuart A Lipton
Purpose: Photoreceptor degeneration in the retina is a major cause of blindness in humans. Elucidating mechanisms of degenerative and neuroprotective pathways in photoreceptors should afford identification and development of therapeutic strategies. Methods: We used mouse genetic models and improved methods for retinal explant cultures. Retinas were enucleated from Mef2d+/+ and Mef2d-/- mice, stained for MEF2 proteins and outer nuclear layer thickness, and assayed for apoptotic cells...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28737506/microglia-and-c9orf72-in-neuroinflammation-and-als-and-frontotemporal-dementia
#10
Deepti Lall, Robert H Baloh
Amyotrophic lateral sclerosis (ALS) is a degenerative disorder that is characterized by loss of motor neurons and shows clinical, pathological, and genetic overlap with frontotemporal dementia (FTD). Activated microglia are a universal feature of ALS/FTD pathology; however, their role in disease pathogenesis remains incompletely understood. The recent discovery that ORF 72 on chromosome 9 (C9orf72), the gene most commonly mutated in ALS/FTD, has an important role in myeloid cells opened the possibility that altered microglial function plays an active role in disease...
July 24, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28736521/group-level-progressive-alterations-in-brain-connectivity-patterns-revealed-by-diffusion-tensor-brain-networks-across-severity-stages-in-alzheimer-s-disease
#11
Javier Rasero, Carmen Alonso-Montes, Ibai Diez, Laiene Olabarrieta-Landa, Lakhdar Remaki, Iñaki Escudero, Beatriz Mateos, Paolo Bonifazi, Manuel Fernandez, Juan Carlos Arango-Lasprilla, Sebastiano Stramaglia, Jesus M Cortes
Alzheimer's disease (AD) is a chronically progressive neurodegenerative disease highly correlated to aging. Whether AD originates by targeting a localized brain area and propagates to the rest of the brain across disease-severity progression is a question with an unknown answer. Here, we aim to provide an answer to this question at the group-level by looking at differences in diffusion-tensor brain networks. In particular, making use of data from Alzheimer's Disease Neuroimaging Initiative (ADNI), four different groups were defined (all of them matched by age, sex and education level): G1 (N1 = 36, healthy control subjects, Control), G2 (N2 = 36, early mild cognitive impairment, EMCI), G3 (N3 = 36, late mild cognitive impairment, LMCI) and G4 (N4 = 36, AD)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28736380/-association-of-fasl-844t-c-gene-polymorphism-with-fasl-expression-in-the-nucleus-pulposus-of-degenerative-lumbar-intervertebral-discs
#12
Zheng-Ming Sun, Pengmaojiacuo Pengmaojiacuo, Hong-Hai Xu, Yan-Hai Chang, Xue-Yuan Wu, Xiang-Hui Dong, Ming Ling
OBJECTIVE: To investigate the association of FasL-844T/C gene polymorphism with the magnetic resonance imaging (MRI) findings and FasL expression in the nucleus pulposus of degenerative lumbar intervertebral discs. METHODS: Lumbar MRI data, venous blood and nucleus pulposus were collected from 105 patients with lumbar disc herniation. The genotypes of FasL-844T/C gene of the patients were determined using matrix-assisted laser desorption ionization time-of-flight mass spectrometry...
July 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28735822/conservative-management-of-a-traumatic-meniscal-injury-utilising-osteopathy-and-exercise-rehabilitation-a-case-report
#13
Jack Feehan, Chris Macfarlane, Brett Vaughan
Meniscal injury is one of the most common knee soft tissue injuries, commonly affecting young athletes and an older, degenerative population. Treatment largely depends on the type and extent of the injury with arthroscopic repair or meniscectomy being mainstays. Although non-surgical approaches have been described, there is no published literature regarding a combination of indirect osteopathic techniques and rehabilitation in the management of these injuries. The current case report follows a 20-year-old male presenting with a 5-day history of acute knee pain, following trauma during an Australian Rules Football (AFL) match...
August 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28735800/durability-of-hemiarthroplasty-for-pathologic-proximal-femur-fractures
#14
Matthew T Houdek, Cody C Wyles, Joshua R Labott, Peter S Rose, Michael J Taunton, Franklin H Sim
BACKGROUND: The hip is a common location for metastatic tumors. Due to the high loads placed through the proximal femur, surgery is often indicated to provide pain relief and restore function. Historically, these lesions are reconstructed with a hemiarthroplasty; however, there are few reports on the outcome of these reconstructions. The purpose of this study is to evaluate the outcome of hemiarthroplasty for the treatment of proximal femur metastatic disease, with a specific focus on the rates of conversion to total hip arthroplasty (THA)...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28735763/platelet-rich-plasma-enhances-bone-union-in-posterolateral-lumbar-fusion-a-prospective-randomized-controlled-trial
#15
Go Kubota, Hiroto Kamoda, Sumihisa Orita, Kazuyo Yamauchi, Yoshihiro Sakuma, Yasuhiro Oikawa, Kazuhide Inage, Takeshi Sainoh, Jun Sato, Michihiro Ito, Masaomi Yamashita, Junichi Nakamura, Takane Suzuki, Kazuhisa Takahashi, Seiji Ohtori
BACKGROUND CONTEXT: Platelet-rich plasma (PRP) accelerates bone union in vivo in a rodent model of spinal fusion surgery. However, PRP's effect on bone union after spinal surgery remains unclear. PURPOSE: To evaluate the efficacy of PRP after posterolateral lumbar fusion (PLF) surgery. STUDY DESIGN/SETTING: Single-center prospective randomized controlled clinical trial with 2-year follow-up. PATIENT SAMPLE: Total 62 patients (31 patients in PRP group or 31 patients in control groups OUTCOME MEASURES: Bone fusion rate, area of bone fusion mass, duration for bone fusion, and clinical score using visual analog scale (VAS)...
July 20, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28735523/histochemistry-and-immunolocalisation-of-glucokinin-in-antidiabetic-plants-used-in-traditional-mexican-medicine
#16
Guillermo Laguna-Hernández, Carlos A Rio-Zamorano, Itzel G Meneses-Ochoa, Alicia E Brechú-Franco
Mexico is a megadiverse country that has 3,600 to 4,000 species of medicinal plants, of which approximately 800 are used to treat conditions related to diabetes mellitus (DM). DM is a chronic degenerative disease of energy metabolism that exists as two types: type 1 (DM1) and type 2 (DM2). DM is considered a public health problem that affects 7% of the Mexican population older than 20 years. DM is clinically controlled with hypoglycaemic drugs, alpha-glucosidase inhibitors, insulin secretion stimulants or the direct application of insulin...
June 21, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735349/connecting-the-dots-between-fatty-acids-mitochondrial-function-and-dna-methylation-in-atherosclerosis
#17
REVIEW
Silvio Zaina, Gertrud Lund
PURPOSE OF REVIEW: The quest for factors and mechanisms responsible for aberrant DNA methylation in human disease-including atherosclerosis-is a promising area of research. This review focuses on the role of fatty acids (FAs) as modulators of DNA methylation-in particular the role of mitochondrial beta-oxidation in FA-induced changes in DNA methylation during the progression of atherosclerosis. RECENT FINDINGS: Recent publications have advanced the knowledge in all areas touched by this review: the causal role of lipids in shaping the DNA methylome, the associations between chronic degenerative disease and mitochondrial function, the lipid composition of the atheroma, and the relevance of DNA hypermethylation in atherosclerosis...
September 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28735135/endoscope-assisted-abscess-drainage-secondary-to-endoscope-assisted-tlif-1-year-follow-up
#18
Karthik Madhavan, Steven Shelby Burks, Lee Onn Chieng, Anand Veeravagu, Michael Y Wang
INTRODUCTION: Endoscopic discectomy and fusions have been gaining popularity in the recent past and are noted to be safe for its application in elderly population. It involves ultra-small incision for discectomy followed by placement of percutaneous screws in awake patients. Treatment of advanced spinal pathology using endoscope-assisted techniques are challenging. Although not common with endoscopic approach, post-operative infection can be problematic as there are no established guidelines on its management...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735093/stable-isotope-labeling-by-fatty-acids-in-cell-culture-silfac-coupled-with-isotope-pattern-dependent-mass-spectrometry-for-global-screening-of-lipid-hydroperoxide-mediated-protein-modifications
#19
Ryo Takahashi, Shuhei Fujioka, Tomoyuki Oe, Seon Hwa Lee
Lipid hydroperoxide-mediated modifications of proteins are receiving increasing attention because of their possible involvement in various degenerative diseases. These biological effects are attributed to the ability of lipid peroxidation-derived aldehydes to react with the nucleophilic sites of proteins. Here we describe a methodology involving metabolic labeling coupled with mass spectrometry-based proteomic analysis that enables global screening of lipid hydroperoxide-mediated protein modifications in a cell system...
July 19, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28735027/translation-of-an-injectable-triple-interpenetrating-network-hydrogel-for-intervertebral-disc-regeneration-in-a-goat-model
#20
Sarah E Gullbrand, Thomas P Schaer, Prateek Agarwal, Justin R Bendigo, George R Dodge, Weiliam Chen, Dawn M Elliott, Robert L Mauck, Neil R Malhotra, Lachlan J Smith
Degeneration of the intervertebral discs is a progressive cascade of cellular, compositional and structural changes that is frequently associated with low back pain. As the first signs of disc degeneration typically arise in the disc's central nucleus pulposus (NP), augmentation of the NP via hydrogel injection represents a promising strategy to treat early to mid-stage degeneration. The purpose of this study was to establish the translational feasibility of a triple interpenetrating network hydrogel composed of dextran, chitosan, and teleostean (DCT) for augmentation of the degenerative NP in a preclinical goat model...
July 19, 2017: Acta Biomaterialia
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