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https://www.readbyqxmd.com/read/28820791/teleophthalmic-approach-for-detection-of-corneal-diseases-accuracy-and-reliability
#1
Maria A Woodward, David C Musch, Christopher T Hood, Jonathan B Greene, Leslie M Niziol, V Swetha E Jeganathan, Paul P Lee
PURPOSE: Corneal and anterior segment diseases cause most of the urgent visits to eye care professionals. We evaluated the diagnostic accuracy of detecting corneal diseases using external photographs from 2 portable cameras for telemedicine purposes. METHODS: This is a prospective study of adults with a clinical diagnosis of corneal pathology including corneal abrasions, ulcers, scars, and pterygia. A cornea specialist provided the gold standard diagnosis by slit-lamp examination...
August 17, 2017: Cornea
https://www.readbyqxmd.com/read/28818814/exposure-to-polybrominated-diphenyl-ethers-and-perfluoroalkyl-substances-in-a-remote-population-of-alaska-natives
#2
Samuel Byrne, Samarys Seguinot-Medina, Pamela Miller, Vi Waghiyi, Frank A von Hippel, C Loren Buck, David O Carpenter
BACKGROUND: Many Alaska Native communities rely on a traditional marine diet that contains persistent organic pollutants (POPs). The indoor environment is also a source of POPs. Polybrominated diphenyl ethers (PBDEs) and perfluoroalkyl substances (PFASs) are present both in the traditional diet and the home indoor environment. OBJECTIVES: We assessed exposure to PBDEs and PFASs among residents of two remote Alaska Native villages on St. Lawrence Island. Ninespine stickleback (Pungitious pungitious) and Alaska blackfish (Dallia pectoralis) were used to detect accumulation of these compounds in the local environment...
August 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28816440/high-quantities-of-microplastic-in-arctic-deep-sea-sediments-from-the-hausgarten-observatory
#3
Melanie Bergmann, Vanessa Wirzberger, Thomas Krumpen, Claudia Lorenz, Sebastian Primpke, Mine B Tekman, Gunnar Gerdts
Although mounting evidence suggests the ubiquity of microplastic in aquatic ecosystems worldwide, our knowledge of its distribution in remote environments such as Polar Regions and the deep sea is scarce. Here, we analyzed nine sediment samples taken at the HAUSGARTEN observatory in the Arctic at 2,340 - 5,570 m depth. Density separation by MicroPlastic Sediment Separator and treatment with Fenton's reagent enabled analysis via Attenuated Total Reflection FTIR and µFTIR spectroscopy. Our analyses indicate the wide spread of high numbers of microplastics (42 - 6,595 microplastics kg-1)...
August 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28816410/new-insights-into-the-cellular-makeup-and-progenitor-potential-of-palatal-connective-tissues
#4
Emoke Pall, Mihai Cenariu, Adrian Kasaj, Adrian Florea, Andrada Soancă, Alexandra Roman, Carmen Georgiu
The present study investigated the regenerative potential of connective tissues harvested from two palatal areas widely used as donor sites for muco-gingival surgical approaches. Connective tissue grafts (CTGs) were obtained by de-epithelialisation of a free gingival graft (deCTG) and by a split flap approach from a previous donor site (reCTG). Two types of mesenchymal stem cell (MSCs) were isolated and were named de-epithelialised MSCs (deMSCs) and re-entry MSCs (reMSCs). The cells were characterised and cellular functionality was investigated...
August 17, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28810961/resuscitation-of-hypotensive-traumatic-brain-injured-animals-with-spray-dried-plasma-does-not-adversely-alter-physiology-and-improves-blood-brain-barrier-function
#5
Steven McDaniel, Stephanie Golla, Anthony N Moore, Joe DaCorta, Arthur Bode, Shibani Pati, Pramod K Dash, Jing Zhao
INTRODUCTION: According to the Defense and Veterans Brain Injury Center and the Armed Forces Health Surveillance Center, the number of soldiers who have sustained a traumatic brain injury (TBI) has risen dramatically over the past decade. Studies have shown that brain damage can be exacerbated if blood loss occurs (often occurring in polytrauma). As blood supply is critical for brain function and survival, TBI patients must be properly resuscitated to maintain blood volume, blood pressure, and cerebral perfusion...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28796856/detection-of-potentially-severe-retinopathy-of-prematurity-by-remote-image-grading
#6
Graham E Quinn, Gui-Shuang Ying, Wei Pan, Agnieshka Baumritter, Ebenezer Daniel
Importance: Telemedicine in retinopathy of prematurity (ROP) has the potential for delivering timely care to premature infants at risk for serious ROP. Objective: To describe the characteristics of eyes at risk for ROP to provide insights into what types of ROP are most easily detected early by image grading. Design, Setting, and Participants: Secondary analysis of eyes with referral-warranted (RW) ROP (stage 3 ROP, zone I ROP, plus disease) on diagnostic examination from the Telemedicine Approaches to Evaluating Acute-Phase Retinopathy of Prematurity (e-ROP) study was conducted from May 1, 2011, to October 31, 2013, in 1257 premature infants with birth weights less than 1251 g in 13 neonatal units in North America...
August 10, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28794194/induced-oscillations-in-turtle-cortex-are-coherent-at-the-mesoscale-of-population-activity-but-not-at-the-microscale-of-the-membrane-potential-of-neurons
#7
Mahmood Sayed Hoseini, Jeff Pobst, Nathaniel Caleb Wright, Wesley Clawson, Woodrow Shew, Ralf Wessel
Bursts of oscillatory neural activity have been hypothesized to be a core mechanism by which remote brain regions can communicate. Such hypothesis raises the question to what extent oscillations are coherent across spatially distant neural populations. To address this question, we obtained local field potential (LFP) and membrane potential recordings from the visual cortex of turtle in response to visual stimulation of the retina. The time-frequency analysis of these recordings revealed pronounced bursts of oscillatory neural activity and a large trial-to-trial variability in the spectral and temporal properties of the observed oscillations...
August 9, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28782015/nanotwinned-metal-mems-films-with-unprecedented-strength-and-stability
#8
Gi-Dong Sim, Jessica A Krogstad, K Madhav Reddy, Kelvin Y Xie, Gianna M Valentino, Timothy P Weihs, Kevin J Hemker
Silicon-based microelectromechanical systems (MEMS) sensors have become ubiquitous in consumer-based products, but realization of an interconnected network of MEMS devices that allows components to be remotely monitored and controlled, a concept often described as the "Internet of Things," will require a suite of MEMS materials and properties that are not currently available. We report on the synthesis of metallic nickel-molybdenum-tungsten films with direct current sputter deposition, which results in fully dense crystallographically textured films that are filled with nanotwins...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28767059/hyperspectral-and-radar-airborne-imagery-over-controlled-release-of-oil-at-sea
#9
Sébastien Angelliaume, Xavier Ceamanos, Françoise Viallefont-Robinet, Rémi Baqué, Philippe Déliot, Véronique Miegebielle
Remote sensing techniques are commonly used by Oil and Gas companies to monitor hydrocarbon on the ocean surface. The interest lies not only in exploration but also in the monitoring of the maritime environment. Occurrence of natural seeps on the sea surface is a key indicator of the presence of mature source rock in the subsurface. These natural seeps, as well as the oil slicks, are commonly detected using radar sensors but the addition of optical imagery can deliver extra information such as thickness and composition of the detected oil, which is critical for both exploration purposes and efficient cleanup operations...
August 2, 2017: Sensors
https://www.readbyqxmd.com/read/28766908/building-essential-biodiversity-variables-ebvs-of-species-distribution-and-abundance-at-a-global-scale
#10
W Daniel Kissling, Jorge A Ahumada, Anne Bowser, Miguel Fernandez, Néstor Fernández, Enrique Alonso García, Robert P Guralnick, Nick J B Isaac, Steve Kelling, Wouter Los, Louise McRae, Jean-Baptiste Mihoub, Matthias Obst, Monica Santamaria, Andrew K Skidmore, Kristen J Williams, Donat Agosti, Daniel Amariles, Christos Arvanitidis, Lucy Bastin, Francesca De Leo, Willi Egloff, Jane Elith, Donald Hobern, David Martin, Henrique M Pereira, Graziano Pesole, Johannes Peterseil, Hannu Saarenmaa, Dmitry Schigel, Dirk S Schmeller, Nicola Segata, Eren Turak, Paul F Uhlir, Brian Wee, Alex R Hardisty
Much biodiversity data is collected worldwide, but it remains challenging to assemble the scattered knowledge for assessing biodiversity status and trends. The concept of Essential Biodiversity Variables (EBVs) was introduced to structure biodiversity monitoring globally, and to harmonize and standardize biodiversity data from disparate sources to capture a minimum set of critical variables required to study, report and manage biodiversity change. Here, we assess the challenges of a 'Big Data' approach to building global EBV data products across taxa and spatiotemporal scales, focusing on species distribution and abundance...
August 2, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28765722/megafauna-of-the-uksrl-exploration-contract-area-and-eastern-clarion-clipperton-zone-in-the-pacific-ocean-echinodermata
#11
Diva J Amon, Amanda F Ziegler, Antonina Kremenetskaia, Christopher L Mah, Rich Mooi, Tim O'Hara, David L Pawson, Michel Roux, Craig R Smith
BACKGROUND: There is growing interest in mining polymetallic nodules from the abyssal Clarion-Clipperton Zone (CCZ) in the tropical Pacific Ocean. Despite being the focus of environmental studies for decades, the benthic megafauna of the CCZ remain poorly known. In order to predict and manage the environmental impacts of mining in the CCZ, baseline knowledge of the megafauna is essential. The ABYSSLINE Project has conducted benthic biological baseline surveys in the UK Seabed Resources Ltd polymetallic-nodule exploration contract area (UK-1)...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28762936/-the-phenotype-of-chronic-obstructive-pulmonary-disease-with-frequent-exacerbations-in-the-aspect-of-long-term-percutaneous-coronary-intervention-results
#12
V K Zafiraki, A M Namitokov, K V Skaletsky, E D Kosmacheva, L V Shulzhenko, J M Ramazanov, A A Omarov, I V Pershukov
OBJECTIVE: To evaluate the results of percutaneous coronary interventions (PCI) in patients with coronary heart disease (CHD) and chronic obstructive pulmonary disease (COPD), depending on the frequency of exacerbations of COPD. MATERIALS AND METHODS: We enrolled in this prospective study 103 patients with CHD and COPD who underwent PCI (n=103) including 25 who satisfied criteria of COPD phenotype with frequent exacerbations (main group). Analysis included comparison of rates and times to major adverse cardiac events (MACE - myocardial infarction, stroke, cardiac death, repeat revascularization) in the main group and other patients...
March 2017: Kardiologiia
https://www.readbyqxmd.com/read/28762048/pharmaceuticals-and-personal-care-products-ppcps-in-arctic-environments-indicator-contaminants-for-assessing-local-and-remote-anthropogenic-sources-in-a-pristine-ecosystem-in-change
#13
Roland Kallenborn, Eva Brorström-Lundén, Lars-Otto Reiersen, Simon Wilson
A first review on occurrence and distribution of pharmaceuticals and personal care products (PPCPs) is presented. The literature survey conducted here was initiated by the current Assessment of the Arctic Monitoring and Assessment Programme (AMAP). This first review on the occurrence and environmental profile of PPCPs in the Arctic identified the presence of 110 related substances in the Arctic environment based on the reports from scientific publications, national and regional assessments and surveys, as well as academic research studies (i...
July 31, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28760211/implantable-cardiac-monitors-in-high-risk-post-infarction-patients-with-cardiac-autonomic-dysfunction-and-moderately-reduced-left-ventricular-ejection-fraction-design-and-rationale-of-the-smart-mi-trial
#14
RANDOMIZED CONTROLLED TRIAL
Wolfgang Hamm, Konstantinos D Rizas, Lukas von Stülpnagel, Nikolay Vdovin, Steffen Massberg, Stefan Kääb, Axel Bauer
BACKGROUND: Most deaths after myocardial infarction (MI) occur in patients with left ventricular ejection fraction (LVEF) >35%, for whom no specific prophylactic strategies exist. Deceleration capacity (DC) of heart rate and periodic repolarization dynamics (PRD) are noninvasive electrophysiological markers depending on the vagal and sympathetic tone. The combination of abnormal DC and/or PRD identifies a new high-risk group among postinfarction patients with LVEF 36%-50%. This new high-risk group has similar characteristics with respect to prognosis and patient numbers to those of the established high-risk group identified by LVEF ≤ 35%...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28755986/investigating-the-involvement-of-glycogen-synthase-kinase-3%C3%AE-and-gap-junction-signaling-in-trpv1-and-remote-hind-preconditioning-induced-cardioprotection
#15
Puneet Kaur Randhawa, Amteshwar Singh Jaggi
Remote ischemic preconditioning (RIPC) is the phenomenon that harnesses the body's endogenous protective mechanisms against prolonged ischemia-reperfusion-induced injury. The present study aimed to explore the involvement of glycogen synthase kinase-3β and gap junction signaling in TRPV1 and remote hind preconditioning-induced cardioprotection. In the present study, four consecutive cycles (5min of ischemia-reperfusion) of remote hind limb preconditioning stimulus were delivered using a blood pressure cuff fastened at the inguinal level of the rat...
July 27, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28753104/p-gingivalis-suppresses-trophoblast-invasion-by-soluble-factors
#16
Naoko Hirohata, Shihoko Komine-Aizawa, Muneaki Tamura, Kuniyasu Ochiai, Masahiko Sugitani, Satoshi Hayakawa
BACKGROUND: Periodontitis is a common chronic inflammatory disorder that affects supporting tissues of the teeth. An increased risk of pregnancy complications has been reported in the patients with periodontitis; however, its pathophysiology remains uncharacterized to date. In addition, Porphyromonas gingivalis (P.g) are detectable in a few placentae derived from diseased pregnancies. Thus, we aimed to examine the roles of soluble factors produced by P.g on trophoblast invasion in vitro to clarify the remote effects of periodontitis on the outcomes of pregnancy...
July 28, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28752913/prevalence-of-retinal-vein-occlusion-in-the-australian-national-eye-health-survey
#17
Stuart Keel, Jing Xie, Joshua Foreman, Peter van Wijngaarden, Hugh R Taylor, Mohamed Dirani
IMPORTANCE: In Australia, knowledge of the epidemiology of retinal vein occlusion (RVO) remains scarce due to a paucity of recent population-based data. The National Eye Health Survey (NEHS, 2015-16) provides an up-to-date estimate of the prevalence of RVO in non-Indigenous and Indigenous Australian adults. BACKGROUND: To determine the prevalence and associations of retinal vein occlusion (RVO) in a national sample of Indigenous and non-Indigenous Australian adults...
July 28, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28744677/light-absorption-by-water-soluble-organic-carbon-in-atmospheric-fine-particles-in-the-central-tibetan-plateau
#18
YanGe Zhang, JianZhong Xu, JinSen Shi, CongHui Xie, XinLei Ge, JunFeng Wang, ShiChang Kang, Qi Zhang
Brown carbon (BrC) has recently received much attention because of its light absorption features. The chemical compositions, optical properties, and sources of fine aerosol at a high-elevation mountain observatory (4730 m a.s.l.) in the central Tibetan Plateau were measured between 31 May and 1 July 2015. A low flow-rate sampler was used to collect 24-h average fine particulate matter (PM2.5) filter samples. Water-soluble ions, organic carbon (OC), elemental carbon, water-soluble organic carbon (WSOC), and light absorption by water-soluble BrC were determined for 26 filter samples...
July 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28738862/impact-of-ischemic-preconditioning-on-surgical-treatment-of-brain-tumors-a-single-center-randomized-double-blind-controlled-trial
#19
Arthur H A Sales, Melanie Barz, Stefanie Bette, Benedikt Wiestler, Yu-Mi Ryang, Bernhard Meyer, Martin Bretschneider, Florian Ringel, Jens Gempt
BACKGROUND: Postoperative ischemia is a frequent phenomenon in patients with brain tumors and is associated with postoperative neurological deficits and impaired overall survival. Particularly in the field of cardiac and vascular surgery, the application of a brief ischemic stimulus not only in the target organ but also in remote tissues can prevent subsequent ischemic damage. We hypothesized that remote ischemic preconditioning (rIPC) in patients with brain tumors undergoing elective surgical resection reduces the incidence of postoperative ischemic tissue damage and its consequences...
July 25, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28735704/effect-of-remote-cesarean-delivery-on-complications-during-hysterectomy-a-cohort-study
#20
Susanne Hesselman, Ulf Högberg, Maria Jonsson
BACKGROUND: Cesarean section is frequently performed worldwide, and follow-up studies reporting complications at subsequent surgery are warranted. OBJECTIVES: The aim of the study was to investigate the association between a previous abdominal delivery and complications during a subsequent hysterectomy, and to estimate the fraction of complications driven by the presence of adhesions. STUDY DESIGN: This was a longitudinal population based register study of 25354 women undergoing a benign hysterectomy at 46 hospital units in Sweden 2000-2014...
July 20, 2017: American Journal of Obstetrics and Gynecology
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