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https://www.readbyqxmd.com/read/28431461/impact-of-superparamagnetic-iron-oxide-nanoparticles-on-vocal-fold-fibroblasts-cell-behavior-and-cellular-iron-kinetics
#1
Marina Pöttler, Anna Fliedner, Eveline Schreiber, Christina Janko, Ralf Philipp Friedrich, Christopher Bohr, Michael Döllinger, Christoph Alexiou, Stephan Dürr
PURPOSE: The voice is the most important instrument of communication. Tissue defects in the vocal fold (VF) area lead to serious reduction in quality of life, but thus far, no satisfactory VF implant exists. Therefore, we aim to establish a functional VF implant in a rabbit model by magnetic tissue engineering (MTE) using superparamagnetic iron oxide nanoparticles (SPION). Hence, iron quantification over time as well as cell behavior studies upon SPION treatment are of great importance...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28431460/paramagnetic-intrinsic-defects-in-polycrystalline-large-area-2d-mos2-films-grown-on-sio2-by-mo-sulfurization
#2
A Stesmans, S Iacovo, D Chiappe, I Radu, C Huyghebaert, S De Gendt, V V Afanas'ev
A low-temperature electron spin resonance study has been carried out on large-area high-purity polycrystalline two-dimensional few monolayer (ML) 2H MoS2 films synthesized by sulfurization of Mo layers, with intent to atomically assess mobility-degrading detrimental point defects. This reveals the presence of a distinct previously unreported anisotropic defect of axial symmetry about the c-axis characterized by g // = 2.00145 and g ⊥ = 2.0027, with corresponding density (spin S = ½) ~3 × 10(12) cm(-2) for a 4 ML thick film...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28431459/direct-growth-of-al2o3-on-black-phosphorus-by-plasma-enhanced-atomic-layer-deposition
#3
B B Wu, H M Zheng, Y Q Ding, W J Liu, H L Lu, P Zhou, L Chen, Q Q Sun, S J Ding, David W Zhang
Growing high-quality and uniform dielectric on black phosphorus is challenging since it is easy to react with O2 or H2O in ambient. In this work, we have directly grown Al2O3 on BP using plasma-enhanced atomic layer deposition (PEALD). The surface roughness of BP with covered Al2O3 film can reduce significantly, which is due to the removal of oxidized bubble in BP surface by oxygen plasma. It was also found there is an interfacial layer of PO x in between amorphous Al2O3 film and crystallized BP, which is verified by both X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) measurements...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28431457/precision-medicine-and-pharmacogenetics-what-does-oncology-have-that-addiction-medicine-does-not
#4
Henry R Kranzler, Rachel V Smith, Robert Schnoll, Afaf Moustafa, Emma Greenstreet-Akman
BACKGROUND AND AIMS: Precision, personalized or stratified medicine, which promises to deliver the right treatment to the right patient, is a topic of international interest in both the lay press and the scientific literature. A key aspect of precision medicine is the identification of biomarkers that predict the response to medications (i.e. pharmacogenetics). We examined why, despite the great strides that have been made in biomarker identification in many areas of medicine, only in oncology has there been substantial progress in their clinical implementation...
April 21, 2017: Addiction
https://www.readbyqxmd.com/read/28431452/-treatment-options-for-neurogenic-drop-foot-a-systematic-literature-research
#5
Eike Jakubowitz, Daiwei Yao, Henning Windhagen, Christina Stukenborg-Colsman, Anna Thomann, Kiriakos Daniilidis
Background Neurogenic drop foot may be caused by central or peripheral lesions of the nervous system. Depending on whether the first or second motor neuron is damaged, a flaccid or spastic drop foot develops. Spastic drop foot persists as a residual long-term complication after stroke in about 14 % of patients. Various conservative and surgical treatment options are available. Methods This article is based on a systematic literature review for medical evidence of functional electrical stimulation (FES) with the keywords "functional electrical stimulation AND drop foot" and "functional electrical stimulation AND gait AND stroke" in PubMed and Cochrane databases...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28431451/-experience-with-the-hind-foot-relaxation-boot
#6
Hans Zwipp, Michael Borrmann, Eberhard Walter
The goal of this paper is to report our experience with hindfoot fractures using our specially developed boot, with a follow-up of 557 cases. This boot works like the well-known Allgöwer-Röck ortheses (ARO), but is a hybrid between a boot and an orthesis. It allows full weightbearing without using crutches and completely protects an acutely operated hind foot fracture, hind foot arthrodesis or a hind foot fracture which is suitable for conservative treatment. In its first generation, this boot was custom made and used in 408 cases, from March 1999 to February 2011...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28431449/peripheral-and-central-glucocorticoid-signaling-contributes-to-positive-energy-balance-in-rats
#7
Tássia Karin Borba, Lígia Cristina Monteiro Galindo, Kelli Nogueira Ferraz-Pereira, Raquel da Silva Aragão, Ana Elisa Toscano, Omar Guzmán-Quevedo, Raul Manhães-de-Castro
The obesity epidemic has been the target of several studies to understand its etiology. The pathophysiological processes that take to obesity generally relate to the rupture of energy balance. This imbalance can result from environmental and/or endogenous events. Among the endogenous events, the hypothalamic-pituitary-adrenal axis, which promotes stress response via glucocorticoid activity, is considered a modulator of energy balance. However, it remains controversial whether the increase in plasma levels of glucocorticoids results in a positive or negative energy balance...
April 21, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28431447/-return-to-work-after-acute-myocardial-infarction
#8
Rona Reibis, Annett Salzwedel, Johannes Falk, Heinz Völler
Vocational reintegration provides a key goal for patients after myocardial infarction both from social as well as from individual perspective. Return to work rate is determined by medical parameters such as left ventricular function, residual ischemia and rhythm stability, as well as by occupational requirement profile such as the blue or white collar work, night shifts and the way capacity. Psycho-social factors including depression, self-assessment of their own situation and pre-existing cognitive impairment to a large extent determine the reintegration...
April 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28431443/-surgical-and-interventional-therapy-of-mitral-valve-regurgitation
#9
Wolfgang Schillinger, Miriam Puls, Bernhard C Danner
Depending from the etiology of mitral valve pathology and surgical risk, mitral valve surgery is the therapy of choice for most degenerative mitral valve diseases. In isolated secondary mitral valve regurgitation, the indication for interventional or conservative therapy becomes more important. In severe left ventricular dysfunction heart transplantation has to be taken into consideration. If relevant coronary artery disease is present and bypass surgery is indicated, mitral valve surgery is mandatory in severe regurgitation and is subject to a benefit-risk evaluation in moderate regurgitation...
April 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28431435/regional-extent-of-peripheral-suppression-in-amblyopia
#10
Raiju J Babu, Simon Clavagnier, William R Bobier, Benjamin Thompson, Robert F Hess
Purpose: Previously, we have mapped amblyopic eye suppression within the central 20° of the visual field and observed a gradient of suppression that is strongest in central vision and weakens with increasing eccentricity. In this study, using a large dichoptic display, we extend our novel suppression mapping approach further into the periphery (from 20°-60°) to assess whether suppression continues to decline with eccentricity or plateaus. Methods: Sixteen participants with amblyopia (10 with strabismus, 6 with anisometropia without strabismus; mean age: 37...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28431434/bright-light-suppresses-form-deprivation-myopia-development-with-activation-of-dopamine-d1-receptor-signaling-in-the-on-pathway-in-retina
#11
Si Chen, Zhina Zhi, Qingqing Ruan, Qingxia Liu, Fen Li, Fen Wan, Peter S Reinach, Jiangfan Chen, Jia Qu, Xiangtian Zhou
Purpose: To determine whether dopamine receptor D1 (D1R) signaling pathway activation by bright light (BL) in specific retinal neuronal cell types contributes to inhibiting form-deprivation myopia (FDM) in mice. Methods: Mice (3-weeks old) were raised under either normal light (NL: 100-200 lux) or BL (2500-5000 lux) conditions with or without form deprivation. Refraction changes were evaluated with an eccentric infrared photorefractor, and ocular axial components with optical coherence tomography...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28431432/contrast-sensitivity-and-lateral-inhibition-are-enhanced-with-macular-carotenoid-supplementation
#12
James M Stringham, Kevin J O'Brien, Nicole T Stringham
Purpose: Once deposited in the retina, the so-called macular carotenoids lutein (L), zeaxanthin (Z), and mesozeaxanthin (MZ) have been shown to enhance visual performance. The purpose of our study was to investigate whether increasing macular pigment optical density (MPOD) could enhance lateral inhibitory processes, and thereby improve contrast sensitivity (CS). Methods: A total of 59 young (18-25 years), healthy individuals participated in this 1-year, double-masked, placebo-controlled study...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28431428/computational-and-in-vitro-experimental-investigation-of-intrathecal-drug-distribution-parametric-study-of-the-effect-of-injection-volume-cerebrospinal-fluid-pulsatility-and-drug-uptake
#13
Kevin M Tangen, Roxanne Leval, Ankit I Mehta, Andreas A Linninger
BACKGROUND: Intrathecal drug delivery is an attractive option to circumvent the blood-brain barrier for pain management through its increased efficacy of pain relief, reduction in adverse side effects, and cost-effectiveness. Unfortunately, there are limited guidelines for physicians to choose infusion or drug pump settings to administer therapeutic doses to specific regions of the spine or the brain. Although empiric trialing of intrathecal drugs is critical to determine the sustained side effects, currently there is no inexpensive in vitro method to guide the selection of spinal drug delivery parameters...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431426/anesthesiologists-and-disaster-medicine-a-needs-assessment-for-education-and-training-and-reported-willingness-to-respond
#14
Heather K Hayanga, Daniel J Barnett, Natasha R Shallow, Michael Roberts, Carol B Thompson, Itay Bentov, Gozde Demiralp, Bradford D Winters, Deborah A Schwengel
BACKGROUND: Anesthesiologists provide comprehensive health care across the emergency department, operating room, and intensive care unit. To date, anesthesiologists' perspectives regarding disaster medicine and public health preparedness have not been described. METHODS: Anesthesiologists' thoughts and attitudes were assessed via a Web-based survey at 3 major academic institutions. Frequencies, percentages, and odds ratios (ORs) were used to assess self-reported perceptions of knowledge and skills, as well as attitudes and beliefs regarding education and training, employee development, professional obligation, safety, psychological readiness, efficacy, personal preparedness, and willingness to respond (WTR)...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431424/sleep-disordered-breathing-postoperative-delirium-and-cognitive-impairment
#15
Enoch W K Lam, Frances Chung, Jean Wong
Sleep-disordered breathing (SDB) is highly prevalent in the general population and has been associated with cognitive impairment in older individuals. Delirium is an acute decline in cognitive function and attention that often occurs after surgery, especially in older individuals. Several recent studies suggest an association between SDB and postoperative delirium. The aim of this systematic review is to examine the current literature on SDB, postoperative delirium, and cognitive impairment and to discuss the pathophysiology and perioperative considerations...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431421/sevoflurane-posttreatment-attenuates-lung-injury-induced-by-oleic-acid-in-dogs
#16
Guizhi Du, Shurong Wang, Zhuo Li, Jin Liu
BACKGROUND: In animal models, both sevoflurane and propofol protect against acute lung injury (ALI), especially when administered prior to ALI onset. We hypothesized that when compared to propofol, sevoflurane administration after the onset of acute respiratory distress syndrome would mitigate oleic acid (OA)-induced ALI in dogs. METHODS: Dogs were randomly assigned to receive intravenous OA to induce ALI (n = 7 for each OA group) or saline as an OA control (n = 6 for each control)...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431420/generative-retrieval-improves-learning-and-retention-of-cardiac-anatomy-using-transesophageal-echocardiography
#17
Amanda M Kleiman, Katherine T Forkin, Allison J Bechtel, Stephen R Collins, Jennie Z Ma, Edward C Nemergut, Julie L Huffmyer
BACKGROUND: Transesophageal echocardiography (TEE) is a valuable monitor for patients undergoing cardiac and noncardiac surgery as it allows for evaluation of cardiovascular compromise in the perioperative period. It is challenging for anesthesiology residents and medical students to learn to use and interpret TEE in the clinical environment. A critical component of learning to use and interpret TEE is a strong grasp of normal cardiovascular ultrasound anatomy. METHODS: Fifteen fourth-year medical students and 15 post-graduate year (PGY) 1 and 2 anesthesiology residents without prior training in cardiac anesthesia or TEE viewed normal cardiovascular anatomy TEE video clips; participants were randomized to learning cardiac anatomy in generative retrieval (GR) and standard practice (SP) groups...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431419/creation-and-validation-of-an-automated-algorithm-to-determine-postoperative-ventilator-requirements-after-cardiac-surgery
#18
Eilon Gabel, Ira S Hofer, Nancy Satou, Tristan Grogan, Richard Shemin, Aman Mahajan, Maxime Cannesson
BACKGROUND: In medical practice today, clinical data registries have become a powerful tool for measuring and driving quality improvement, especially among multicenter projects. Registries face the known problem of trying to create dependable and clear metrics from electronic medical records data, which are typically scattered and often based on unreliable data sources. The Society for Thoracic Surgery (STS) is one such example, and it supports manually collected data by trained clinical staff in an effort to obtain the highest-fidelity data possible...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431417/the-occurrence-of-single-and-multiple-organ-dysfunction-in-pediatric-electrical-versus-other-thermal-burns
#19
Gabriel Hundeshagen, Paul Wurzer, Abigail A Forbes, Charles D Voigt, Vanessa N Collins, Janos Cambiaso-Daniel, Celeste C Finnerty, David N Herndon, Ludwik K Branski
BACKGROUND: Multiple organ failure (MOF) is a major contributor to morbidity and mortality in burned children. While various complications induced by electrical injuries have been described, the incidence and severity of single organ failure (SOF) and MOF associated with this type of injury are unknown. The study was undertaken to compare the incidence and severity of SOF and MOF as well as other complications between electrically and thermally burned children. PATIENTS AND METHODS: Between 2001 and 2016, 288 pediatric patients with electrical burns (EB; n = 96) or thermal burns (CTR; n = 192) were analyzed in this study...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28431416/caring-for-critically-injured-children-an-analysis-of-56-pediatric-damage-control-laparotomies
#20
Miguel A Villalobos, Joshua P Hazelton, Rachel L Choron, Lisa Capano-Wehrle, Krystal Hunter, John P Gaughan, Steven E Ross, Mark J Seamon
BACKGROUND: Injury is the leading cause of death in children under 18 years. Damage control principles have been extensively studied in adults but remain relatively unstudied in children. Our primary study objective was to evaluate the use of damage control laparotomy (DCL) in critically injured children. METHODS: An American College of Surgeons-verified Level 1 trauma center review (1996-2013) of pediatric trauma laparotomies was undertaken. Exclusion criteria included: age older than 18 years, laparotomy for abdominal compartment syndrome or delayed longer than 2 hours after admission...
May 2017: Journal of Trauma and Acute Care Surgery
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