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https://www.readbyqxmd.com/read/28081016/graphene-as-a-flexible-template-for-controlling-magnetic-interactions-between-metal-atoms
#1
Sungwoo Lee, Dongwook Kim, Alex W Robertson, Euijoon Yoon, Suklyun Hong, Jisoon Ihm, Jaejun Yu, Jamie H Warner, Gun-Do Lee
Metal-doped graphene produces magnetic moments that have potential application in spintronics. Here we use density function theory computational methods to show how the magnetic interaction between metal atoms doped in graphene can be controlled by the degree of flexure in a graphene membrane. Bending graphene by flexing causes the distance between two substitutional Fe atoms covalently bonded in graphene to gradually increase and these results in the magnetic moment disappearing at a critical strain value...
January 12, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28079666/intravenous-tissue-plasminogen-activator-administration-for-ischemic-stroke-1-hour-after-epidural-catheter-removal-a-case-report
#2
Anne M Baciewicz, Calvin Lee, Alon Ben-Ari, Hojoong Kim, Alex T Lee
Anticoagulation after a recent neuraxial procedure poses risk for development of spinal hematoma. Clinical evidence supports prompt IV tissue plasminogen activator administration after onset of ischemic stroke. There is an absence of data regarding emergency fibrinolytic therapy for patients experiencing a stroke with recent neuraxial procedures, resulting in highly disparate, nonevidence-based guidelines. This report describes a patient who developed ischemic stroke when receiving postoperative epidural analgesia...
January 11, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28079061/progressive-decline-in-hippocampal-ca1-volume-in-individuals-at-ultra-high-risk-for-psychosis-who-do-not-remit-findings-from-the-longitudinal-youth-at-risk-study
#3
New Fei Ho, Daphne J Holt, Mike Cheung, Juan Eugenio Iglesias, Alex Goh, Mingyuan Wang, Joseph Kw Lim, Joshua de Souza, Joann S Poh, Yuen Mei See, Alison R Adcock, Stephen J Wood, Michael Wl Chee, Jimmy Lee, Juan Zhou
Most individuals identified as ultra high-risk for psychosis (UHR) do not develop frank psychosis. They continue to exhibit subthreshold symptoms, or go on to fully remit. Prior work has shown that the volume of CA1, a subfield of the hippocampus, is selectively reduced in the early stages of schizophrenia. Here, we aimed to determine whether patterns of volume change of CA1 are different in UHR individuals who do or do not achieve symptomatic remission. Structural MRI scans were acquired at baseline and at 1-2 follow-up time points (at 12-month intervals) from 147 UHR and healthy control subjects...
January 12, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28073927/new-insights-into-the-genetics-of-primary-open-angle-glaucoma-based-on-meta-analyses-of-intraocular-pressure-and-optic-disc-characteristics
#4
Henriët Springelkamp, Adriana I Iglesias, Aniket Mishra, René Höhn, Robert Wojciechowski, Anthony P Khawaja, Abhishek Nag, Ya Xing Wang, Jie Jin Wang, Gabriel Cuellar-Partida, Jane Gibson, Jessica N Cooke Bailey, Eranga N Vithana, Puya Gharahkhani, Thibaud Boutin, Wishal D Ramdas, Tanja Zeller, Robert N Luben, Ekaterina Yonova-Doing, Ananth C Viswanathan, Seyhan Yazar, Angela J Cree, Jonathan L Haines, Jia Yu Koh, Emmanuelle Souzeau, James F Wilson, Najaf Amin, Christian Müller, Cristina Venturini, Lisa S Kearns, Jae Hee Kang, Neighborhood Consortium, Yih Chung Tham, Tiger Zhou, Elisabeth M van Leeuwen, Stefan Nickels, Paul Sanfilippo, Jiemin Liao, Herma van der Linde, Wanting Zhao, Leonieke M E van Koolwijk, Li Zheng, Fernando Rivadeneira, Mani Baskaran, Sven J van der Lee, Shamira Perera, Paulus T V M de Jong, Ben A Oostra, André G Uitterlinden, Qiao Fan, Albert Hofman, E- Shyong Tai, Johannes R Vingerling, Xueling Sim, Roger C W Wolfs, Yik Ying Teo, Hans G Lemij, Chiea Chuen Khor, Rob Willemsen, Karl J Lackner, Tin Aung, Nomdo M Jansonius, Grant Montgomery, Philipp S Wild, Terri L Young, Kathryn P Burdon, Pirro G Hysi, Louis R Pasquale, Tien Yin Wong, Caroline C W Klaver, Alex W Hewitt, Jost B Jonas, Paul Mitchell, Andrew J Lotery, Paul J Foster, Veronique Vitart, Norbert Pfeiffer, Jamie E Craig, David A Mackey, Christopher J Hammond, Janey L Wiggs, Ching-Yu Cheng, Cornelia M van Duijn, Stuart MacGregor
Primary open-angle glaucoma (POAG), the most common optic neuropathy, is a heritable disease. Siblings of POAG cases have a ten-fold increase risk of developing the disease. Intraocular pressure (IOP) and optic nerve head characteristics are used clinically to predict POAG risk. We conducted a genome-wide association meta-analysis of IOP and optic disc parameters and validated our findings in multiple sets of POAG cases and controls. Using imputation to the 1000 genomes (1000G) reference set, we identified 9 new genomic regions associated with vertical cup disc ratio (VCDR) and 1 new region associated with IOP...
January 10, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28063701/physicochemical-characterization-of-atlantic-canadian-seafood-processing-plant-effluent
#5
Bryan Lee Jamieson, Graham A Gagnon, Alex Augusto Gonçalves
The purpose of this study was to conduct a preliminary assessment of the potential impacts of Atlantic Canadian seafood processing effluents on the aquatic environment through physical-chemical characterization. Shellfish and finfish effluent samples were collected and characterized by biochemical oxygen demand (BOD5), chemical oxygen demand (COD), turbidity, total suspended solids (TSS), ammonia nitrogen (NH3-N), adsorbable organic halides (AOX), soluble BOD5 and soluble COD. Effluent concentration ranges were BOD5 (179 to 276mgL(-1)), COD (458 to 1717mgL(-1)), turbidity (28...
January 4, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28052860/increased-prevalence-of-coronary-plaque-in-patients-with-psoriatic-arthritis-without-prior-diagnosis-of-coronary-artery-disease
#6
Jiayun Shen, Ka-Tak Wong, Isaac T Cheng, Qing Shang, Edmund K Li, Priscilla Wong, Emily W Kun, Mei Yan Law, Ronald Yip, Isaac Yim, Shirley Ying, Martin Li, Tena K Li, Chun-Kwok Wong, Tracy Y Zhu, Jack Jock-Wai Lee, Mimi Chang, Alex Pui-Wai Lee, Lai-Shan Tam
OBJECTIVES: To evaluate coronary atherosclerosis in patients with psoriatic arthritis (PsA) and control subjects using coronary CT angiography (CCTA). METHODS: Ninety consecutive patients with PsA (male: 56(62.2%); 50.3±11.1 years) were recruited. 240 controls (male: 137(57.1%); 49.6±10.7 years) without known cardiovascular (CV) diseases who underwent CCTA due to chest pain and/or multiple CV risk factors were recruited for comparison. RESULTS: Patients with PsA and controls were matched in age, gender and traditional CV risk factors (all p>0...
January 4, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28034908/targeted-oxygen-in-the-resuscitation-of-preterm-infants-a-randomized-clinical-trial
#7
Ju Lee Oei, Ola D Saugstad, Kei Lui, Ian M Wright, John P Smyth, Paul Craven, Yueping Alex Wang, Rowena McMullan, Elisabeth Coates, Meredith Ward, Parag Mishra, Koert De Waal, Javeed Travadi, Kwee Ching See, Irene G S Cheah, Chin Theam Lim, Yao Mun Choo, Azanna Ahmad Kamar, Fook Choe Cheah, Ahmed Masoud, William Tarnow-Mordi
BACKGROUND AND OBJECTIVES: Lower concentrations of oxygen (O2) (≤30%) are recommended for preterm resuscitation to avoid oxidative injury and cerebral ischemia. Effects on long-term outcomes are uncertain. We aimed to determine the effects of using room air (RA) or 100% O2 on the combined risk of death and disability at 2 years in infants <32 weeks' gestation. METHODS: A randomized, unmasked study designed to determine major disability and death at 2 years in infants <32 weeks' gestation after delivery room resuscitation was initiated with either RA or 100% O2 and which were adjusted to target pulse oximetry of 65% to 95% at 5 minutes and 85% to 95% until NICU admission...
January 2017: Pediatrics
https://www.readbyqxmd.com/read/28030948/faraday-rotation-due-to-surface-states-in-the-topological-insulator-bi1-xsbx-2te3
#8
Yinming Shao, Kirk W Post, Jhih-Sheng Wu, Siyuan Dai, Alex James Frenzel, Anthony R Richardella, Joon Sue Lee, Nitin Samarth, Michael M Fogler, Alexander V Balatsky, Dmitri E Kharzeev, Dimitri N Basov
Using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)2Te3 thin films on InP substrates. From the magneto-transmission data we extracted three distinct cyclotron resonance (CR) energies that are all apparent in the broad band Faraday rotation (FR) spectra. This comprehensive FR-CR data set has allowed us to isolate the response of the bulk states from the intrinsic surface states associated with both the top and bottom surfaces of the film. The FR data uncovered that electron- and hole-type Dirac fermions reside on opposite surfaces of our films, which paves the way for observing many exotic quantum phenomena in topological insulators...
December 29, 2016: Nano Letters
https://www.readbyqxmd.com/read/28018334/molecular-and-proteomic-analysis-of-levofloxacin-and-metronidazole-resistant-helicobacter-pylori
#9
Aimi Hanafi, Woon Ching Lee, Mun Fai Loke, Xinsheng Teh, Ain Shaari, Mojdeh Dinarvand, Philippe Lehours, Francis Mégraud, Alex Hwong Ruey Leow, Jamuna Vadivelu, Khean Lee Goh
Antibiotic resistance in bacteria incurs fitness cost, but compensatory mechanisms may ameliorate the cost and sustain the resistance even under antibiotics-free conditions. The aim of this study was to determine compensatory mechanisms of antibiotic resistance in H. pylori. Five strains of levofloxacin-sensitive H. pylori were induced in vitro to develop resistance. In addition, four pairs of metronidazole-sensitive and -resistant H. pylori strains were isolated from patients carrying dual H. pylori populations that consist of both sensitive and resistant phenotypes...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27991763/the-pepsavi-ms-pipeline-for-natural-product-bioactive-peptide-discovery
#10
Christine L Kirkpatrick, Christopher A Broberg, Elijah N McCool, Woo Jean Lee, Alex Chao, Evan W McConnell, David Pritchard, Michael Hebert, Renee Fleeman, Jessie Adams, Amer Jamil, Laurence Madera, Adam A Strömstedt, Ulf Goransson, Yufeng Liu, David W Hoskin, Lindsey N Shaw, Leslie M Hicks
The recent increase in extensively drug resistant bacterial pathogens and the associated increase of morbidity and mortality demonstrate the immediate need for new antibiotic backbones with novel mechanisms of action. Here, we report the development of the PepSAVI-MS pipeline for bioactive peptide discovery. This highly versatile platform employs mass spectrometry and statistics to identify bioactive peptide targets from complex biological samples. We validate the use of this platform through the successful identification of known bioactive peptides from a botanical species, Viola odorata...
December 19, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27981179/striatal-dopamine-d2-3-receptor-regulation-by-stress-inoculation-in-squirrel-monkeys
#11
Alex G Lee, Jordan M Nechvatal, Bin Shen, Christine L Buckmaster, Michael J Levy, Frederick T Chin, Alan F Schatzberg, David M Lyons
Intermittent mildly stressful situations provide opportunities to learn, practice, and improve coping in a process called stress inoculation. Stress inoculation also enhances cognitive control and response inhibition of impulsive motivated behavior. Cognitive control and motivation have been linked to striatal dopamine D2 and/or D3 receptors (DRD2/3) in rodents, monkeys, and humans. Here, we study squirrel monkeys randomized early in life to stress inoculation with or without maternal companionship and a no-stress control treatment condition...
June 2016: Neurobiology of Stress
https://www.readbyqxmd.com/read/27970223/tct-832-in-vivo-biomechanical-performance-of-thin-strut-sirolimus-eluting-coronary-scaffold-regular-strut-scaffolds-and-bare-metal-stents-in-normal-porcine-coronary-arteries
#12
Andres Valencia, Pawel Gasior, Yanping Cheng, Jinggang Xia, Alex Estrada, Jenn McGregor, Kamal Ramzipoor, Chang Lee, Gerard Conditt, Juan Granada, Greg Kaluza
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970222/tct-831-novel-thin-strut-100-%C3%AE-m-ultra-high-molecular-weight-plla-sirolimus-eluting-bioresorbable-scaffold-a-comparative-preclinical-evaluation-in-porcine-coronary-arteries
#13
Andres Valencia, Pawel Gasior, Yanping Cheng, Jinggang Xia, Alex Estrada, Jenn McGregor, Kamal Ramzipoor, Chang Lee, Gerard Conditt, Greg Kaluza, Juan Granada
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970220/tct-829-biomechanical-behavior-and-healing-response-of-a-novel-thin-strut-sirolimus-eluting-bioresorbable-scaffold-overexpanded-up-to-0-75-mm-beyond-nominal-compliance-chart-diameters-in-porcine-coronary-artery%C3%A2-model
#14
Pawel Gasior, Yanping Cheng, Jinggang Xia, Andres Valencia, Alex Estrada, Jenn McGregor, Kamal Ramzipoor, Chang Lee, Gerard Conditt, Juan Granada, Greg Kaluza
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969660/tct-31-impact-of-strut-thickness-on-short-term-healing-response-after-bioresorbable-scaffold-implantation-serial-oct-evaluation-of-novel-thin-strut-sirolimus-eluting-brs-versus-thick-strut-everolimus-eluting-brs-in-porcine-coronary-arteries
#15
Pawel Gasior, Yanping Cheng, Jinggang Xia, Andres Valencia, Alex Estrada, Jenn McGregor, Kamal Ramzipoor, Chang Lee, Gerard Conditt, Greg Kaluza, Juan Granada
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27965823/feasibility-of-a-stepped-wedge-cluster-rct-and-concurrent-observational-sub-study-to-evaluate-the-effects-of-modified-ward-night-lighting-on-inpatient-fall-rates-and-sleep-quality-a-protocol-for-a-pilot-trial
#16
Satyan R Chari, Simon Smith, Alison Mudge, Alex A Black, Mariana Figueiro, Muhtashimuddin Ahmed, Mark Devitt, Terry P Haines
BACKGROUND: Falls among hospitalised patients impose a considerable burden on health systems globally and prevention is a priority. Some patient-level interventions have been effective in reducing falls, but others have not. An alternative and promising approach to reducing inpatient falls is through the modification of the hospital physical environment and the night lighting of hospital wards is a leading candidate for investigation. In this pilot trial, we will determine the feasibility of conducting a main trial to evaluate the effects of modified night lighting on inpatient ward level fall rates...
2016: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/27957347/high-dose-prolonged-epsilon-aminocaproic-acid-infusion-and-recombinant-factor-vii-for-massive-postoperative-retroperitoneal-hemorrhage-following-splenectomy
#17
Alex T Lee, Christopher R Barnes, Shweta Jain, Ronald Pauldine
The antifibrinolytic agent ε-aminocaproic acid is used to decrease procedural blood loss in a variety of high risk surgeries. The utility of recombinant factor VII administration in massive hemorrhage has also been reported in a variety of settings, though the impact in a surgical context remains unclear. We describe the case of a patient who underwent massive open splenectomy and developed diffuse retroperitoneal bleeding on postoperative day one. Massive transfusion was initiated, but attempts to control hemorrhage with surgical and interventional radiology approaches were unsuccessful, as was recombinant factor VII administration...
2016: Case Reports in Anesthesiology
https://www.readbyqxmd.com/read/27934090/atomic-structure-and-spectroscopy-of-single-metal-cr-v-substitutional-dopants-in-monolayer-mos2
#18
Alex W Robertson, Yung-Chang Lin, Shanshan Wang, Hidetaka Sawada, Christopher S Allen, Qu Chen, Sungwoo Lee, Gun-Do Lee, Joohee Lee, Seungwu Han, Euijoon Yoon, Angus I Kirkland, Heeyeon Kim, Kazu Suenaga, Jamie H Warner
Dopants in two-dimensional dichalcogenides have a significant role in affecting electronic, mechanical, and interfacial properties. Controllable doping is desired for the intentional modification of such properties to enhance performance; however, unwanted defects and impurity dopants also have a detrimental impact, as often found for chemical vapor deposition (CVD) grown films. The reliable identification, and subsequent characterization, of dopants is therefore of significant importance. Here, we show that Cr and V impurity atoms are found in CVD grown MoS2 monolayer 2D crystals as single atom substitutional dopants in place of Mo...
November 22, 2016: ACS Nano
https://www.readbyqxmd.com/read/27928592/radiation-induced-complex-anterior-urinary-fistulation-for-prostate-cancer-a-retrospective-multicenter-study-from-the-trauma-and-urologic-reconstruction-network-of-surgeons-turns
#19
E Charles Osterberg, Alex J Vanni, Thomas W Gaither, Mohannad A Awad, Joshua A Broghammer, Scott C Pate, Hadley Wyre, Jeremy B Myers, Sean P Elliott, Suprita Krishna, Lee C Zhao, Christopher McClung, Bradley A Erickson, Benjamin N Breyer
PURPOSE: To characterize anterior urinary fistulae following radiotherapy for prostate cancer. METHODS: Over 10 years, 31 men were identified to have an anterior urinary fistula. A retrospective database was created to evaluate patient demographics, presentation, diagnostic procedures, operative interventions, outcomes, and complications. Comparisons between men who underwent cystectomy versus bladder-sparing surgeries were performed. RESULTS: At a median age of 73 (interquartile range (IQR) 68...
December 7, 2016: World Journal of Urology
https://www.readbyqxmd.com/read/27923667/evaluation-of-the-effect-of-an-audit-and-feedback-reporting-tool-on-screening-participation-the-primary-care-screening-activity-report-pcsar
#20
Leigh Jonah, Anna Kone Pefoyo, Alex Lee, Joanne Hader, Suzanne Strasberg, Rachel Kupets, Anna M Chiarelli, Jill Tinmouth
Participation in cancer screening is critical to its effectiveness in reducing the burden of cancer. The Primary Care Screening Activity Report (PCSAR), an electronic report, was developed as an innovative audit and feedback tool to increase screening participation in Ontario's cancer screening programs. This study aims to assess its impact on patient screening participation. This study used a retrospective cohort design to evaluate the effectiveness of the 2014 PCSAR on screening participation in Ontario's three screening programs (breast, cervix and colorectal)...
December 3, 2016: Preventive Medicine
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