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https://www.readbyqxmd.com/read/29054353/the-rate-of-radial-head-prosthesis-removal-or-revision-a-systematic-review-and-meta-analysis
#1
Amir R Kachooei, Aslan Baradaran, Mohammad H Ebrahimzadeh, C Niek van Dijk, Neal Chen
PURPOSE: We conducted a meta-analysis and systematic review with the primary objective to determine the overall incidence of radial head prosthesis removal or revision. Our secondary objectives addressed the incidence of removal or revision based on the type of prosthesis fixation (cemented, uncemented smooth stem, uncemented press-fit), material (metal, Vitallium, titanium, pyrocarbon), and design (short vs long stem and monopolar vs bipolar), and the reasons for prosthetic removal or revision...
October 18, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29053056/intradural-spine-surgery-may-not-carry-an-increased-risk-of-shunt-revision-compared-with-extradural-spine-surgery-in-pediatric-patients-with-myelomeningocele
#2
Elizabeth N Kuhn, Betsy Hopson, Michael J Conklin, Jeffrey P Blount
OBJECTIVE Patients with myelomeningocele are often affected by scoliosis and tethered cord syndrome, and frequently require spine surgery. Intradural spine surgeries may carry an inherently higher risk of inducing shunt malfunction due to entry into the subarachnoid space. In this study, the authors sought to compare rates of shunt malfunction after intradural and extradural spine surgeries among pediatric patients with myelomeningocele. METHODS The authors reviewed records of the National Spina Bifida Program Registry for Children's Hospital of Alabama...
October 20, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29051538/identification-and-characterization-of-a-putative-protein-disulfide-isomerase-hspdi-as-an-alleged-effector-of-heterodera-schachtii
#3
Samer S Habash, Miroslaw Sobczak, Shahid Siddique, Boris Voigt, Abdelnaser Elashry, Florian M W Grundler
The plant-parasitic nematode Heterodera schachtii is an obligate biotroph that induces syncytial feeding sites in roots of its hosts. Nematodes produce effectors that are secreted into the host and facilitate infection process. Here we identified H. schachtii protein disulphide isomerase (HsPDI) as a putative effector that interferes with the host's redox status. In situ hybridization showed that HsPdi is specifically localized within esophageal glands of pre-parasitic second stage juveniles (J2). HsPdi is up-regulated in the early parasitic J2s...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29048941/patient-perceptions-of-the-adequacy-of-supplemental-oxygen-therapy-results-of-the-american-thoracic-society-nursing-assembly-oxygen-working-group-survey
#4
Susan S Jacobs, Kathleen O Lindell, Eileen G Collins, Chris M Garvey, Carme Hernandez, Sally McLaughlin, Ann M Schneidman, Paula M Meek
RATIONALE: Pulmonary clinicians and patients anecdotally report barriers to home supplemental oxygen services including inadequate supply, unacceptable portable options, and equipment malfunction. Limited evidence exists to describe or quantify these problems. OBJECTIVE: To describe the frequency and type of problems experienced by supplemental oxygen users in the United States. METHODS: The Patient Supplemental Oxygen Survey, a self-report questionnaire, was posted on the American Thoracic Society (ATS) Public Advisory Roundtable and patient and healthcare-affiliated websites...
October 19, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29048343/a-practical-example-of-gan-led-failure-cause-analysis-by-application-of-combined-electron-microscopy-techniques
#5
Elke Meissner, Maral Haeckel, Jochen Friedrich
In this paper, we report a failure case of blue LEDs returned from a field application, and propose a practical way to identify the physical and structural reasons for the observed malfunction by a combination of different electron microscope techniques. Cathodoluminescence imaging and electron beam induced current (EBIC) imaging are employed in order to visualize conductive paths through the device in conjunction with subsequent energy dispersive x-ray analysis (EDS), revealing a metal deposition along cracks in the semiconductor layer which short-circuit the device...
October 19, 2017: Materials
https://www.readbyqxmd.com/read/29046456/viperin-targets-flavivirus-virulence-by-inducing-assembly-of-non-infectious-capsid-particles
#6
Kirstin Vonderstein, Emma Nilsson, Philipp Hubel, Lars Nygård Skalman, Arunkumar Upadhyay, Jenny Pasto, Andreas Pichlmair, Richard Lundmark, Anna K Överby
Efficient antiviral immunity requires interference with virus replication at multiple layers targeting diverse steps in the viral life cycle. Here we describe a novel flavivirus inhibition mechanism that results in interferon-mediated obstruction of tick-borne encephalitis virus particle assembly, and involves release of malfunctional membrane associated capsid (C) particles. This mechanism is controlled by the activity of the interferon-induced protein viperin, a broad spectrum antiviral interferon stimulated gene...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29045651/clinical-decision-support-alert-malfunctions-analysis-and-empirically-derived-taxonomy
#7
Adam Wright, Angela Ai, Joan Ash, Jane F Wiesen, Thu-Trang T Hickman, Skye Aaron, Dustin McEvoy, Shane Borkowsky, Pavithra I Dissanayake, Peter Embi, William Galanter, Jeremy Harper, Steve Z Kassakian, Rachel Ramoni, Richard Schreiber, Anwar Sirajuddin, David W Bates, Dean F Sittig
Objective: To develop an empirically derived taxonomy of clinical decision support (CDS) alert malfunctions. Materials and Methods: We identified CDS alert malfunctions using a mix of qualitative and quantitative methods: (1) site visits with interviews of chief medical informatics officers, CDS developers, clinical leaders, and CDS end users; (2) surveys of chief medical informatics officers; (3) analysis of CDS firing rates; and (4) analysis of CDS overrides. We used a multi-round, manual, iterative card sort to develop a multi-axial, empirically derived taxonomy of CDS malfunctions...
October 16, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/29045310/risk-of-stroke-after-transcatheter-prosthetic-aortic-valve-implant-with-aortic-bioprosthesis-subclinical-thrombosis-and-possible-therapeutic-implications
#8
Giuseppe Di Pasquale, Gloria V Coutsoumbas, Silvia Zagnoni
: Many factors could increase the risk of stroke after transcatheter prosthetic aortic valve implant, mainly related to the procedure itself, or to the type of valvular prosthesis, or to the presence of atrial fibrillation. There is a wide variability in the antithrombotic treatment utilized in clinical practice, as far as the choice of drugs (anticoagulant, single or dual antiplatelet treatment), and its optimal duration. The most popular therapeutic strategy, also recommended by the Scientific Societies, is dual antiplatelet (aspirin and clopidogrel) for the first 3-6 months then switching to single antiplatelet (usually aspirin), limiting oral anticoagulant therapy only to those patients with other primary indication to the treatment...
October 16, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29042927/novel-type-of-peritoneocentesis-trocar-assisted-distal-ventriculoperitoneal-shunt-placement-with-supervision-via-a-one-port-laparoscope
#9
Guangming Wang, Jinlu Yu, Yongxin Luan, Yanwu Han, Shuanglin Fu
Ventriculoperitoneal shunts (VPS) are the primary treatment for hydrocephalus and are associated with a high risk of complications, specifically in patients who are obese or have abdominal adhesions or shunt revisions. The present study describes the use of a novel type of peritoneal catheter peritoneocentesis trocar insertion with the assistance of a one-port laparoscope. A total of 36 patients with hydrocephalus underwent this novel type of peritoneocentesis trocar-assisted VPS. The distal shunt catheter was placed into the right subdiaphragmatic space and the catheter was traversed through a single hole drilled through the liver falciform ligament...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042668/signalling-mechanisms-in-paf-induced-intestinal-failure
#10
Ingmar Lautenschläger, Yuk Lung Wong, Jürgen Sarau, Torsten Goldmann, Karina Zitta, Martin Albrecht, Inéz Frerichs, Norbert Weiler, Stefan Uhlig
Capillary leakage syndrome, vasomotor disturbances and gut atony are common clinical problems in intensive care medicine. Various inflammatory mediators and signalling pathways are involved in these pathophysiological alterations among them platelet-activating factor (PAF). The related signalling mechanisms of the PAF-induced dysfunctions are only poorly understood. Here we used the model of the isolated perfused rat small intestine to analyse the role of calcium (using calcium deprivation, IP-receptor blockade (2-APB)), cAMP (PDE-inhibition plus AC activator), myosin light chain kinase (inhibitor ML-7) and Rho-kinase (inhibitor Y27632) in the following PAF-induced malfunctions: vasoconstriction, capillary and mucosal leakage, oedema formation, malabsorption and atony...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29040867/long-term-follow-up-of-anterior-thalamic-deep-brain-stimulation-in-epilepsy-a-11-year-single-center-experience
#11
Seong Hoon Kim, Sung Chul Lim, Jiyeon Kim, Byung-Chul Son, Kyung Jin Lee, Young-Min Shon
PURPOSE: Anterior thalamic deep brain stimulation (ATN DBS) is an emerging, effective treatment for patients with drug-resistant epilepsy, but long-term results on its efficacy and safety are lacking. To evaluate the long-term efficacy and safety of ATN DBS treatment, as well as predictors of its success, in patients with drug-refractory epilepsy (DRE). METHOD: We retrospectively studied clinical outcomes in 29 consecutive refractory epilepsy patients treated by a single DBS team (two neurosurgeons, four neurologists) over an 11-year period, for whom follow-up was performed for up to 137 months (mean, 74...
October 14, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29040231/continuous-infraclavicular-brachial-block-versus-single-shot-nerve-block-for-distal-radius-surgery-a-prospective-randomized-control-trial
#12
Abhishek Ganta, David Ding, Nina Fisher, Jessica Lavery, Sudheer Jain, Nirmal Tejwani
OBJECTIVES: To compare the efficacy of an infraclaviclar single shot nerve block to a continuous infusion through an On Q infusion pump for rebound pain (between 12 to 24 hours post-operatively) and post operative narcotic analgesia requirements in distal radius fractures. DESIGN: Prospective Randomized Control Trial SETTINGS:: Performed at two hospitals affiliated with a large urban academic medical center PATIENTS:: Fifty patients undergoing operative fixation of distal radius fractures (OTA/AO type 23B/C) INTERVENTION:: Patients were randomized to receive either an infraclavicular block as a single shot (SSB group) or a continuous infusion through an On Q pump (On Q group) MAIN OUTCOME MEASURES:: Visual analog scale (0-10) pain levels and amount of pain medication taken RESULTS:: At all time points after discharge, mean post-operative pain scores were lower in the On Q group vs the SSB group but did not reach statistical significance...
September 1, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29039124/recent-progress-in-mass-spectrometry-proteomics-for-biomedical-research
#13
REVIEW
Xu Li, Wenqi Wang, Junjie Chen
Proteins are the key players in many cellular processes. Their composition, trafficking, and interactions underlie the dynamic processes of life. Furthermore, diseases are frequently accompanied by malfunction of proteins at multiple levels. Understanding how biological processes are regulated at the protein level is critically important to understanding the molecular basis for diseases and often shed light on disease prevention, diagnosis, and treatment. With rapid advances in mass spectrometry (MS) instruments and experimental methodologies, MS-based proteomics has become a reliable and essential tool for elucidating biological processes at the protein level...
October 13, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/29037831/a-complex-case-of-pacemaker-lead-endocarditis
#14
Henrique Guedes, Adriana Pereira, Rui Pontes Dos Santos, Leonor Marques, Nuno Moreno, Alexandra Castro, Rui Cunha E Sousa, Aurora Andrade, Paula Pinto
Pacemaker lead endocarditis is an uncommon complication after pacemaker implantation, but is associated with high rates of morbidity and mortality. The authors describe the case of a 68-year-old woman with a double-chamber pacemaker since 2007, admitted to an internal medicine department for spondylodiscitis and Staphylococcus aureus bacteremia. During hospitalization, she had an episode of syncope; the 12-lead electrocardiogram showed pacemaker malfunction with ventricular undersensing and loss of capture...
October 13, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29037359/thigh-compartment-syndrome-during-extracorporeal-life-support
#15
Maximilian Kreibich, Martin Czerny, Christoph Benk, Friedhelm Beyersdorf, Bartosz Rylski, Georg Trummer
OBJECTIVE: The aim of this study was to report our experience with patients on the extracorporeal life support system (ECLS) who presented with thigh compartment syndrome, a yet unreported complication. METHODS: A retrospective analysis was performed from April 2003 to April 2017 to identify patients who presented to our department for treatment of acute compartment syndrome of the thigh after cannulation of the ECLS through the femoral artery and vein. RESULTS: Five patients, aged 30 to 84 years, who developed thigh compartment syndrome during ECLS therapy were identified...
November 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29036048/laser-diode-side-pumped-nd-yvo4-microchip-laser-with-film-etched-microcavity-mirrors
#16
Jiyang Li, Yanxiong Niu, Sanbin Chen, Yidong Tan
Microchip lasers are applied as the light sources on various occasions with the end-pumping scheme. However, the vibration, the temperature drift, or the mechanical deformation of the pumping light in laser diodes in the end-pumping scheme will lead to instability in the microchip laser output, which causes errors and malfunctioning in the optic systems. In this paper, the side-pumping scheme is applied for improving the disturbance-resisting ability of the microchip laser. The transverse mode and the frequency purity of the laser output are tested...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29035775/avoiding-the-pocket-a-case-report-of-coiling-of-distal-shunt-catheter-into-subcutaneous-pocket
#17
Richard Justin Garling, Sandeep Sood, Carolyn Anne Harris
INTRODUCTION: Hydrocephalus is one of the most common disorders of neurosurgery and ventricular shunting, the primary surgical intervention, malfunctions in 85% of patients by 10 years. PRESENTATION OF CASE: Here we present a case of a 12-year-old girl with history of a vagal nerve stimulator (VNS) and ventricular shunt, most recently revised from ventriculoatrial (VA) to ventriculoperitoneal (VP) shunt at an outside hospital. The patient presented with a new left chest bulge, nausea, emesis, and seizures...
October 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29031729/point-mutation-of-ffar1-abrogates-fatty-acid-dependent-insulin-secretion-but-protects-against-hfd-induced-glucose-intolerance
#18
Sibylle Sabrautzki, Gabriele Kaiser, Gerhard K H Przemeck, Felicia Gerst, Estela Lorza-Gil, Madhura Panse, Tina Sartorius, Miriam Hoene, Susan Marschall, Hans-Ulrich Häring, Martin Hrabě de Angelis, Susanne Ullrich
OBJECTIVE: The fatty acid receptor 1 (FFAR1/GPR40) mediates fatty acid-dependent augmentation of glucose-induced insulin secretion (GIIS) in pancreatic β-cells. Genetically engineered Ffar1-knockout/congenic mice univocally displayed impaired fatty acid-mediated insulin secretion, but in vivo experiments delivered controversial results regarding the function of FFAR1 in glucose homeostasis and liver steatosis. This study presents a new coisogenic mouse model carrying a point mutation in Ffar1 with functional consequence...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29030436/a-mutator-phenotype-promoting-the-emergence-of-spontaneous-oxidative-stress-resistant-mutants-in-campylobacter-jejuni
#19
Lei Dai, Orhan Sahin, Yizhi Tang, Qijing Zhang
Campylobacter jejuni is a leading cause of foodborne illnesses worldwide. As a microaerophilic organism, C. jejuni must be able to defend against oxidative stress encountered both in the host and in the environment. How Campylobacter utilizes a mutation-based mechanism for adaptation to oxidative stress is still unknown. Here we present a previously undescribed phenotypic and genetic mechanism that promotes the emergence of oxidative stress resistant mutants. Specifically, we showed that a naturally occurring mutator phenotype, resulting from a loss of function mutation in the DNA repair enzyme MutY, increased oxidative stress resistance (OX(R)) in C...
October 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29030433/dysregulation-of-the-mitochondrial-unfolded-protein-response-induces-non-apoptotic-dopaminergic-neurodegeneration-in-c-elegans-models-of-parkinson-s-disease
#20
Bryan A Martinez, Daniel A Petersen, Anthony L Gaeta, Samuel P Stanley, Guy A Caldwell, Kim A Caldwell
Due to environmental insult or innate genetic deficiency, protein folding environments of the mitochondrial matrix are prone to dysregulation, prompting the activation of a specific organellar stress-response mechanism the mitochondrial unfolded protein response (UPR(MT)). In Caenorhabditis elegans, mitochondrial damage leads to nuclear translocation of the ATFS-1 transcription factor to activate the UPR(MT) After short-term acute stress has been mitigated, the UPR(MT) is eventually suppressed to restore homeostasis to C...
October 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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