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https://www.readbyqxmd.com/read/29151210/determination-of-protein-ps-ns-motions-by-high-resolution-relaxometry
#1
Samuel F Cousin, Pavel Kadeřávek, Nicolas Bolik-Coulon, Fabien Ferrage
Many of the functions of biomacromolecules can be rationalized by the characterization of their conformational energy landscapes: the structures of the dominant states, transitions between states and motions within states. Nuclear magnetic resonance (NMR) spectroscopy is the technique of choice to study internal motions in proteins. The determination of motions on picosecond to nanosecond timescales requires the measurement of nuclear spin relaxation rates at multiple magnetic fields. High sensitivity and resolution are obtained only at high magnetic fields, so that, until recently, site-specific relaxation rates in biomolecules were only measured over a narrow range of high magnetic fields...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29151182/electrical-cardioversion-of-patients-with-implanted-pacemaker-or-cardioverter-defibrillator-results-of-a-survey-of-german-centers-and-systematic-review-of-the-literature
#2
J Lüker, A Sultan, T Plenge, J van den Bruck, C-H Heeger, S Meyer, K Mischke, R R Tilz, D Vollmann, G Nölker, B Schäffer, S Willems, D Steven
AIMS: A relevant number of patients presenting for electrical cardioversion carry a pacemaker (PM) or ICD. Case reports suggest a potential hazard of external cardioversion/defibrillation. The incidence of shock related device complications is unknown. No guidelines or recommendations by international medical societies for a cardioversion protocol of cardiovascular implantable electronic device (CIED) patients exist. We conducted a nationwide survey to gather real-world clinical data on the current clinical approach towards these patients during electrical cardioversion and to estimate the incidence of shock-related complications...
November 18, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29151132/safety-of-intrathecal-route-focus-to-methylprednisolone-acetate-depo-medrol-use
#3
REVIEW
Joël Schlatter, David Nguyen, Michèle Zamy, Sofiane Kabiche, Jean-Eudes Fontan, Salvatore Cisternino
PURPOSE: Complications of the intrathecal route may cause potential toxicity related to the medical device and properties of the administered drug and/or excipient. A description of clinical and histological effects of polyethylene glycol and miripirium after Depo-Medrol injection, and the adverse reactions of particulate methylprednisolone acetate was conducted. The safety of the intrathecal route with excipients, label and off-label drugs is discussed. METHODS: A bibliographic search in Medline, Google, and Cochrane database from 1940 to June 2016 was performed...
November 18, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29151108/a-phenomenological-account-of-sensorimotor-difficulties-in-autism-intentionality-movement-and-proprioception
#4
Till D A Grohmann
During the last decades, the focus in autism research has been progressively extended. Today it offers a large amount of material on sensorimotor disturbances as well as perceptive-cognitive preferences of people with autism. However, there are more and more critical voices against an intellectualist perspective in the cognitive sciences. The "enactive approach" as well as a new "movement perspective" to autism challenge the view of autism as a mere "cognitive" disturbance. They criticize the conception of a cognizing subject which is only interested in the world in as much as she/he can extract knowledge and organize it rationally...
November 18, 2017: Psychopathology
https://www.readbyqxmd.com/read/29150999/focus-on-focus-lack-of-coherence-between-systemic-and-microvascular-indices-of-edema-formation
#5
Birkitt Ten Tusscher, Corien Gudden, Suus van Vliet, Bob Smit, Can Ince, E Christiaan Boerma, Harm-Jan S de Grooth, Paul W G Elbers
BACKGROUND: Fluid therapy remains a cornerstone of therapy in shock states. However, fluid overloading ultimately results in edema formation which is related to excess morbidity and mortality. Handheld microscopes are now frequently used to study the sublingual microcirculation. As a corollary, these devices measure focal distance, or surface to capillary distance. Physiologically, this could represent a microvascular index of edema formation and could have the potential to guide fluid therapy...
November 18, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29150922/prospective-evaluation-of-a-nonsurgical-device-for-rhinoplasty
#6
M A Deggeller, D Holzmann, M B Soyka
BACKGROUND: Rhinoplasty represents one of the most challenging and frequently performed procedures in plastic surgery and non-surgical rhinoplasty is rarely considered. The aim of this study was to investigate whether the Nasella Nose Former (NNF), a newly developed non-surgical rhinoplasty device, could improve objective and subjective results following surgical rhinoplasty and even correct the shape of the nose without any surgery at all. METHODOLOGY: In this prospective, monocentric, two-armed, non-blinded randomized, controlled clinical trial, a total of 43 participants were included...
November 18, 2017: Rhinology
https://www.readbyqxmd.com/read/29150914/navigating-the-clinical-translation-of-medical-devices-the-case-of-radiofrequency-ablation
#7
Abdel Armaiz Flores, Marianna L Oppenheimer Velez, Scott M Thompson, Anthony J Windebank, Alexandra J Greenberg-Worisek
No abstract text is available yet for this article.
November 18, 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/29150765/finite-element-design-optimization-of-a-hyaluronic-acid-based-hydrogel-drug-delivery-device-for-improved-retention
#8
Jourdan Colter, Barbara Wirostko, Brittany Coats
Drug-loaded hydrogel devices are emerging as an effective means of localized and sustained drug delivery for the treatment of corneal conditions and injuries. One such device uses a novel, thiolated crosslinked carboxymethylated, hyaluronic acid-based hydrogel (CMHA-S) film to deliver drug to the ocular surface upon placement into the inferior fornix of the eye. While proven to be very safe and effective, the CMHA-S film tends to dislodge in the highly-lubricated ocular environment, thereby reducing drug delivery efficiency and drug efficacy...
November 17, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29150746/correlation-between-quantitative-pivot-shift-and-generalized-joint-laxity-a-prospective-multicenter-study-of-acl-ruptures
#9
David Sundemo, Anna Blom, Yuichi Hoshino, Ryosuke Kuroda, Nicola Francesco Lopomo, Stefano Zaffagnini, Volker Musahl, James J Irrgang, Jón Karlsson, Kristian Samuelsson
PURPOSE: To investigate whether an increased magnitude of quantitative rotatory knee laxity is associated with a greater level of generalized joint laxity in ACL-injured and contralateral knees. METHODS: A total of 103 patients were enrolled across four international centers to undergo anatomic ACL reconstruction. Rotatory knee laxity was evaluated preoperatively, both in the awake state and under anesthesia, using the standardized pivot shift test. Two devices were used to quantify rotatory knee laxity; an inertial sensor, measuring the joint acceleration, and an image analysis system, measuring the lateral compartment translation of the tibia...
November 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29150698/surgical-techniques-for-left-atrial-appendage-exclusion
#10
REVIEW
Sacha P Salzberg, Maximilian Y Emmert, Etem Caliskan
The increasing prevalence of atrial fibrillation with the aging population and its associated major morbidity and mortality due to thromboembolic stroke have resulted in intensive research on stroke prevention or stroke risk reduction strategies. Several surgical techniques for left atrial appendage (LAA) occlusion have evolved over the past decades. Surgeons have been using different techniques leading to highly variable and, in particular, poor data on outcomes. LAA closure is performed either as a concomitant procedure during open-heart surgery or as a stand-alone surgical procedure as part of minimally invasive (mini-thoracotomy or thoracoscopy) arrhythmia surgery...
November 17, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29150695/new-angle-measurement-device-to-control-the-posterior-tibial-slope-angle-in-medial-opening-wedge-high-tibial-osteotomy
#11
Hiroyasu Ogawa, Kazu Matsumoto, Haruhiko Akiyama
INTRODUCTION: Medial opening wedge high tibial osteotomy has been associated with an unintentional increase in the posterior tibial slope angle. We aimed to evaluate the effectiveness of a novel bone spreader angle rod to maintain the native posterior tibial slope angle in medial opening wedge high tibial osteotomy. MATERIALS AND METHODS: Data from 92 consecutive knees in 83 patients who underwent medial opening wedge high tibial osteotomy for knee osteoarthritis between March 2015 and June 2016 were analysed...
November 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29150533/disparity-between-indications-for-and-utilization-of-implantable-cardioverter-defibrillators-in-asian-patients-with-heart-failure
#12
Yvonne May Fen Chia, Tiew-Hwa Katherine Teng, Eugene S J Tan, Wan Ting Tay, A Mark Richards, Calvin Woon Loong Chin, Wataru Shimizu, Sang Weon Park, Chung-Lieh Hung, Lieng H Ling, Tachapong Ngarmukos, Razali Omar, Bambang B Siswanto, Calambur Narasimhan, Eugene B Reyes, Cheuk-Man Yu, Inder Anand, Michael R MacDonald, Jonathan Yap, Shu Zhang, Eric A Finkelstein, Carolyn S P Lam
BACKGROUND: Implantable cardioverter defibrillators (ICDs) are lifesaving devices for patients with heart failure (HF) and reduced ejection fraction. However, utilization and determinants of ICD insertion in Asia are poorly defined. We determined the utilization, associations of ICD uptake, patient-perceived barriers to device therapy and, impact of ICDs on mortality in Asian patients with HF. METHODS AND RESULTS: Using the prospective ASIAN-HF (Asian Sudden Cardiac Death in Heart Failure) registry, 5276 patients with symptomatic HF and reduced ejection fraction (HFrEF) from 11 Asian regions and across 3 income regions (high: Hong Kong, Japan, Korea, Singapore, and Taiwan; middle: China, Malaysia, and Thailand; and low: India, Indonesia, and Philippines) were studied...
November 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29150326/concomitant-mitral-valve-procedures-in-patients-undergoing-implantation-of-continuous-flow-left-ventricular-assist-devices-an-intermacs-database-analysis
#13
Jason O Robertson, David C Naftel, Susan L Myers, Ryan J Tedford, Susan M Joseph, James K Kirklin, Scott C Silvestry
BACKGROUND: Management of existing mitral valve (MV) disease in patients undergoing left ventricular assist device (LVAD) implantation remains controversial. METHODS: Among continuous-flow LVAD patients with moderate to severe mitral regurgitation entered into the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) database between April 2008 and March 2014 (n = 4,930), outcomes were compared between patients who underwent MV repair (MVr, n = 252), MV replacement (MVR, n = 11) and no MV procedure (no MVP, n = 4,667)...
October 10, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29150283/transcutaneous-neuromuscular-electrical-stimulation-may-be-beneficial-in-the-treatment-of-premature-ejaculation
#14
Ilan Gruenwald, Ege Can Serefoglu, Tal Gollan, Shmuel Springer, Gideon Meiry, Boaz Appel, Arik Shechter
Approximately 20-30% of sexually active men suffer from Premature Ejaculation (PE), but the pathophysiology still remains unclear and the current available treatments for PE are unsatisfying. Considering the role of rhythmic bulbospongiosus and ischiocavernosus Muscles contractions on the ejaculatory reflex, we hypothesize that weakening this muscles via inhibiting it's contractions by Application of Neuromuscular Electrical Stimulation prior to the planned sexual activity, may have a beneficial effect in the treatment of PE...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29149991/a-fast-and-low-cost-microfabrication-approach-for-six-types-of-thermoplastic-substrates-with-reduced-feature-size-and-minimized-bulges-using-sacrificial-layer-assisted-laser-engraving
#15
Longjun Gu, Guodong Yu, Cheuk-Wing Li
Since polydimethylsiloxane (PDMS) is notorious for its severe sorption to biological compounds and even nanoparticles, thermoplastics become a promising substrate for microdevices. Although CO2 laser engraving is an efficient method for thermoplastic device fabrication, it accompanies with poor bonding issues due to severe bulging and large feature size determined by the diameter of laser beam. In this study, a low-cost microfabrication method is proposed by reversibly sealing a 1 mm thick polymethylmethacrylate (PMMA) over an engraving substrate to reduce channel feature size and minimize bulges of laser engraved channels...
January 2, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29149990/simultaneous-determination-of-renal-function-biomarkers-in-urine-using-a-validated-paper-based-microfluidic-analytical-device
#16
Eduardo Luiz Rossini, Maria Izabel Milani, Emanuel Carrilho, Leonardo Pezza, Helena Redigolo Pezza
In this paper, we describe a validated paper-based microfluidic analytical device for the simultaneous quantification of two important biomarkers of renal function in urine. This paper platform provides an inexpensive, simple, and easy to use colorimetric method for the quantification of creatinine (CRN) and uric acid (UA) in urine samples. The microfluidic paper-based analytical device (μPAD) consists of a main channel with three identical arms, each containing a circular testing zone and a circular uptake zone...
January 2, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29149830/diagnostic-devices-for-circulating-biomarkers-detection-and-quantification
#17
Chiara Bedin, Sara Crotti, Ennio Tasciotti, Marco Agostini
Nowadays, fast and sensitive methods for biomarkers detection exist, but the performance of most of them still rely in centralized laboratory testing. The development of small, fast and simple to use medical device that can help in making diagnosis accurate and with low-invasiveness is now a major challenge for nanotechnology. To develop diagnostic devices for cancer detection, nanomaterials-based systems have significant advantages over current conventional approaches in terms of simplicity, sensitivity, specificity and rapidity...
November 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29149725/a-method-for-the-design-of-ultrasonic-devices-for-scanning-acoustic-microscopy-using-impulsive-signals
#18
Mototaka Arakawa, Hiroshi Kanai, Kazuo Ishikawa, Ryo Nagaoka, Kazuto Kobayashi, Yoshifumi Saijo
Scanning acoustic microscopy (SAM) using impulsive signals is useful for characterization of biological tissues and cells. The operating center frequency of an ultrasonic device strongly depends on the performance characteristics of the device if the measurement is conducted by using impulsive signals. In this paper, a method for the design of ultrasonic devices for SAM using impulsive signals was developed. A new plane-wave model was introduced to calculate frequency characteristics of loss of ultrasonic devices by taking into account the conversion loss at the ultrasonic transducer, the transmission loss at the acoustic anti-reflection coating, and the propagation loss in the couplant...
November 2, 2017: Ultrasonics
https://www.readbyqxmd.com/read/29149695/rheo-optical-near-infrared-nir-spectroscopy-study-of-partially-miscible-polymer-blend-of-polymethyl-methacrylate-pmma-and-polyethylene-glycol-peg
#19
Hideyuki Shinzawa, Junji Mizukado
Tensile deformations of a partially miscible blend of polymethyl methacrylate (PMMA) and polyethylene glycol (PEG) is studied by a rheo-optical characterization near-infrared (NIR) technique to probe deformation behavior during tensile deformation. Sets of NIR spectra of the polymer samples were collected by using an acousto-optic tunable filter (AOTF) NIR spectrometer coupled with a tensile testing machine as an excitation device. While deformations of the samples were readily captured as strain-dependent NIR spectra, the entire feature of the spectra was overwhelmed with the baseline fluctuation induced by the decrease in the sample thickness and subsequent change in the light scattering...
November 11, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29149568/individual-atomic-imaging-of-multiple-dopant-sites-in-as-doped-si-using-spectro-photoelectron-holography
#20
Kazuo Tsutsui, Tomohiro Matsushita, Kotaro Natori, Takayuki Muro, Yoshitada Morikawa, Takuya Hoshii, Kuniyuki Kakushima, Hitoshi Wakabayashi, Kouichi Hayashi, Fumihiko Matsui, Toyohiko Kinoshita
The atomic scale characterization of dopant atoms in semiconductor devices to establish correlations with the electrical activation of these atoms is the essential to the advancement of contemporary semiconductor process technology. Spectro-photoelectron holography combined with first-principles simulations can determine the local three-dimensional atomic structures of dopant elements, which in turn affect their electronic states. In the work reported herein, this technique was used to examine arsenic (As) atoms doped into a silicon (Si) crystal...
November 17, 2017: Nano Letters
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