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https://www.readbyqxmd.com/read/28944813/transparent-amorphous-strontium-titanate-resistive-memories-with-transient-photo-response
#1
Taimur Ahmed, Sumeet Walia, Jeeson Kim, Hussein Nili, Rajesh Ramanathan, Edwin L H Mayes, Desmond W M Lau, Omid Kavehei, Vipul Bansal, Madhu Bhaskaran, Sharath Sriram
Transparent non-volatile memory devices are desirable for realizing visually-clear integrated systems for information storage. Optical transparency provides advantages in applications such as smart glass electronic devices and wearable electronics. However, achieving high transparency limits the choice of active layers as well as the electrodes; thereby, constraining device processing and performance. Here, we demonstrate bilayer transparent memory cells using room temperature deposited amorphous strontium titanate as the functional material and indium tin oxide electrodes...
September 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28944563/a-randomized-controlled-trial-of-levodopa-in-patients-with-angelman-syndrome
#2
Wen-Hann Tan, Lynne M Bird, Anjali Sadhwani, Rene L Barbieri-Welge, Steven A Skinner, Lucia T Horowitz, Carlos A Bacino, Lisa M Noll, Cary Fu, Rachel J Hundley, Logan K Wink, Craig A Erickson, Gregory N Barnes, Anne Slavotinek, Rita Jeremy, Alexander Rotenberg, Sanjeev V Kothare, Heather E Olson, Annapurna Poduri, Mark P Nespeca, Hillary C Chu, Jennifer M Willen, Kevin F Haas, Edwin J Weeber, Paul A Rufo
Treatment for Angelman syndrome (AS) is currently limited to symptomatic interventions. A mouse model of AS has reduced calcium/calmodulin-dependent kinase II activity due to excessive phosphorylation of specific threonine residues, leading to diminished long-term potentiation. In a rat model of Parkinson disease, levodopa reduced phosphorylation of various proteins, including calcium/calmodulin-dependent kinase II. Further studies demonstrated that AS mice treated with levodopa performed better on rotarod testing than untreated AS mice...
September 25, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28943397/can-standardized-pathology-examination-increase-the-lymph-node-yield-following-laparoscopic-distal-pancreatectomy-for-ductal-adenocarcinoma
#3
Mushegh A Sahakyan, Sven P Haugvik, Bård I Røsok, Airazat M Kazaryan, Dejan Ignjatovic, Trond Buanes, Knut J Labori, Caroline S Verbeke, Bjørn Edwin
BACKGROUND: Lymph node yield (LNY) is an indicator of oncological adequacy of surgery in patients with pancreatic ductal adenocarcinoma (PDAC). Our hypothesis is that standardized pathology examination (SPE) aimed at accurate staging can increase the LNY without changing surgical technique. METHODS: After the introduction of SPE for distal pancreatosplenectomy specimens at Oslo University Hospital, prospective data were collected on patients with PDAC undergoing laparoscopic distal pancreatosplenectomy (LDP)...
September 21, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28943279/lobar-emphysema-distribution-is-associated-with-5-year-radiologic-disease-progression
#4
Adel Boueiz, Yale Chang, Michael H Cho, George R Washko, Raul San José Estépar, Russell P Bowler, James D Crapo, Dawn L DeMeo, Jennifer G Dy, Edwin K Silverman, Peter J Castaldi
BACKGROUND: Emphysema has considerable variability in its regional distribution. Cranio-caudal emphysema distribution is an important predictor of the response to lung volume reduction. However, there is little consensus regarding how to define upper and lower-lobe predominant emphysema subtypes. Consequently, the clinical and genetic associations with these subtypes are poorly characterized. METHODS: We sought to identify subgroups characterized by upper or lower lobe emphysema predominance and comparable amounts of total emphysema by analyzing data from 9,210 non-alpha-1 antitrypsin deficient smokers in the COPDGene cohort...
September 21, 2017: Chest
https://www.readbyqxmd.com/read/28943064/endostapler-versus-hem-o-lok-clip-to-secure-the-appendiceal-stump-and-mesoappendix-during-laparoscopic-appendectomy
#5
Mohammed H Al-Temimi, Mendy A Berglin, Edwin G Kim, Deron J Tessier, Samir D Johna
BACKGROUND: Our study evaluates the safety and cost of using the Hem-O-Lok (HOL) clip in laparoscopic appendectomy (LA). METHOD: We prospectively compared 30-day postoperative outcomes and cost between HOL clip and endoscopic stapler (ES) in LA at a single institution. RESULTS: HOL clip was used in 45 out of 92 LA. Perforated appendicitis (29.8% vs. 11.1%, P = 0.027) and postoperative complications were more common in the ES group (19.2% vs...
September 18, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28942541/surgical-site-infections-in-emergency-abdominal-surgery-at-tamale-teaching-hospital-ghana
#6
Stephen Tabiri, Edwin Yenli, Martin Kyere, Theophilus T K Anyomih
BACKGROUND: Surgical site infections (SSIs) result in delayed wound healing, increased use of antibiotics and increased length of hospital stay, putting remarkable physical and financial burden on patients, their relatives and the healthcare facilities. Patient-related factors, such as pre-existing colonization with antibiotic-resistant bacteria, and clinical-related factors, such as adherence to sterile techniques, contribute to the development of SSIs. The objective of this study, therefore, was to determine the SSI rate and risk factors for emergency abdominal surgeries at Tamale Teaching Hospital, Ghana...
September 23, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28940323/paired-comparison-of-therapeutic-plasma-exchange-using-the-fenwal-amicus-versus-terumobct-spectra-optia
#7
Edwin A Burgstaler, Sandra C Bryant, Jeffrey L Winters
PURPOSE: Terumo BCT Spectra Optia (O) and Fenwal Amicus (A) can perform therapeutic plasma exchange (TPE). We compared these systems in a prospective, randomized, crossover study of 81 paired procedures. Primary objective was to determine if there was a difference in platelet loss between the instruments. Secondary objectives were to determine differences in procedure time (PT), plasma removal efficiency (PRE 1), plasma removal rate (PRR), and fluid balance (FB). METHODS: Fifty-seven adults undergoing 162 procedures were included...
September 23, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28939505/impact-of-waterborne-and-trophic-mercury-exposures-on-cardiac-function-of-two-ecologically-distinct-neotropical-freshwater-fish-brycon-amazonicus-and-hoplias-malabaricus
#8
Diana A Monteiro, Edwin W Taylor, Francisco T Rantin, Ana L Kalinin
Metal pollutants have been considered one of the main factors underlying the depletion of biodiversity in natural populations unbalancing aquatic environments. The aim of this study was to evaluate the effects of exposure to inorganic Hg on myocardial contractility and the electrocardiogram (ECG) of two ecologically distinct Neotropical fish species, namely: matrinxã (Brycon amazonicus) and trahira (Hoplias malabaricus). Matrinxãs were exposed to a sublethal concentration of 0.1mgL(-1) of Hg in water for 96h...
September 20, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28939251/laparoscopic-common-bile-duct-exploration-versus-endoscopic-retrograde-cholangiopancreatography-for-choledocholithiasis-found-at-time-of-laparoscopic-cholecystectomy-analysis-of-a-large-integrated-health-care-system-database
#9
Mohammed H Al-Temimi, Edwin G Kim, Bindupriya Chandrasekaran, Vanessa Franz, Charles N Trujillo, Asrai Mousa, Deron J Tessier, Samir D Johna, David A Santos
BACKGROUND: We compared endoscopic retrograde cholangiopancreatography (ERCP) and laparoscopic common bile duct exploration (LCBDE) for managing choledocholithiasis found at time of cholecystectomy. METHODS: One hundred and five LCBDE (2005-2015) were compared to 195 LC/ERCP (2014-2015) from the Southern California Kaiser Permanente database. RESULTS: LC/ERCP was more effective at clearing the CBD (98% vs. 88.6%, p = 0.01); but required more procedures per patient (mean ± standard deviation, 1...
September 18, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28935901/a-brain-targeting-lipidated-peptide-for-neutralizing-rna-mediated-toxicity-in-polyglutamine-diseases
#10
Qian Zhang, Mengbi Yang, Kasper K Sørensen, Charlotte S Madsen, Josephine T Boesen, Ying An, Shao Hong Peng, Yuming Wei, Qianwen Wang, Knud J Jensen, Zhong Zuo, Ho Yin Edwin Chan, Jacky Chi Ki Ngo
Polyglutamine (PolyQ) diseases are progressive neurodegenerative disorders caused by both protein- and RNA-mediated toxicities. We previously showed that a peptidyl inhibitor, P3, which binds directly to expanded CAG RNA can inhibit RNA-induced nucleolar stress and suppress RNA-induced neurotoxicity. Here we report a N-acetylated and C-amidated derivative of P3, P3V8, that showed a more than 20-fold increase in its affinity for expanded CAG RNA. The P3V8 peptide also more potently alleviated expanded RNA-induced cytotoxicity in vitro, and suppressed polyQ neurodegeneration in Drosophila with no observed toxic effects...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935472/treatment-of-superficial-femoral-artery%C3%A2-restenosis
#11
Andrew J Miller, Edwin A Takahashi, William S Harmsen, Kristin C Mara, Sanjay Misra
PURPOSE: To determine the predictors of restenosis, major adverse limb events (MALEs), postoperative death (POD), and all-cause mortality after repeat endovascular treatment of superficial femoral artery (SFA) restenosis. MATERIALS AND METHODS: This was a retrospective review of 440 patients with 518 SFA lesions who were treated between January 2002 and October 2011. Ninety-six limbs were treated for restenosis with bare metal stents (BMSs) or percutaneous transluminal angioplasty (PTA), of which 28 limbs developed another restenosis requiring a third procedure...
September 19, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28934470/monitoring-replication-protein-a-rpa-dynamics-in-homologous-recombination-through-site-specific-incorporation-of-non-canonical-amino-acids
#12
Nilisha Pokhrel, Sofia Origanti, Eric Parker Davenport, Disha Gandhi, Kyle Kaniecki, Ryan A Mehl, Eric C Greene, Chris Dockendorff, Edwin Antony
An essential coordinator of all DNA metabolic processes is Replication Protein A (RPA). RPA orchestrates these processes by binding to single-stranded DNA (ssDNA) and interacting with several other DNA binding proteins. Determining the real-time kinetics of single players such as RPA in the presence of multiple DNA processors to better understand the associated mechanistic events is technically challenging. To overcome this hurdle, we utilized non-canonical amino acids and bio-orthogonal chemistry to site-specifically incorporate a chemical fluorophore onto a single subunit of heterotrimeric RPA...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28933695/cooperative-interactions-enable-singular-olfactory-receptor-expression-in-mouse-olfactory-neurons
#13
Kevin Monahan, Ira Schieren, Jonah Cheung, Alice Mumbey-Wafula, Edwin S Monuki, Stavros Lomvardas
The monogenic and monoallelic expression of only one out of >1000 mouse olfactory receptor (ORs) genes requires the formation of large heterochromatic chromatin domains that sequester the OR gene clusters. Within these domains, intergenic transcriptional enhancers evade heterochromatic silencing and converge into interchromosomal hubs that assemble over the transcriptionally active OR. The significance of this nuclear organization in OR choice remains elusive. Here, we show that transcription factors Lhx2 and Ebf specify OR enhancers by binding in a functionally cooperative fashion to stereotypically spaced motifs that defy heterochromatin...
September 21, 2017: ELife
https://www.readbyqxmd.com/read/28933224/progesterone-sharpens-temporal-response-profiles-of-sensory-cortical-neurons-in-animals-exposed-to-traumatic-brain-injury
#14
Benjamin J Allitt, Victoria P A Johnstone, Katrina L Richards, Edwin B Yan, Ramesh Rajan
Traumatic brain injury (TBI) initiates a cascade of pathophysiological changes that are both complex and difficult to treat. Progesterone (P4) is a neuroprotective treatment option that has shown excellent preclinical benefits in the treatment of TBI, but these benefits have not translated well in the clinic. We have previously shown that P4 exacerbates the already hypoactive upper cortical responses in the short-term post-TBI and does not reduce upper cortical hyperactivity in the long term, and we concluded that there is no tangible benefit to sensory cortex firing strength...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28932430/crystal-structure-of-2-chloro-5-3-hy-droxy-3-methyl-but-1-yn-1-yl-pyrimidine
#15
Jörg Hübscher, Wilhelm Seichter, Edwin Weber
In the title compound, C9H9ClN2O, the ethynyl-pyrimidine moiety displays an almost planar geometry. In the crystal, mol-ecules are linked by O-H⋯N and C-Hpyrimidine⋯O hydrogen bonds, forming a three-dimensional supra-molecular architecture.
July 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932252/transient-expression-of-lumbrokinase-pi239-in-tobacco-nicotiana-tabacum-using-a-geminivirus-based-single-replicon-system-dissolves-fibrin-and-blood-clots
#16
Alexia Dickey, Nan Wang, Edwin Cooper, Lauren Tull, Drew Breedlove, Hugh Mason, Dehu Liu, Kevin Yueju Wang
Lumbrokinases, a group of fibrinolytic enzymes extracted from earthworm, have been widely used to prevent and treat various cardiovascular diseases. They specifically target fibrin to effectively degrade thrombi without major side effects. Plant expression systems are becoming potential alternative expression platforms for producing pharmaceutical proteins. In this work, a lumbrokinase (PI239) was produced from a plant system. Both wild-type (WT) and plant codon-optimized (OP) PI239 gene sequences were synthesized and cloned into a geminivirus-based single-vector DNA replicon system...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28930905/effectiveness-of-early-warming-with-self-warming-blankets-on-postoperative-hypothermia-in-total-hip-and-knee-arthroplasty
#17
Baris B Koc, Martijn G M Schotanus, Jean-Paul A P A C Kollenburg, Maurice J A Janssen, Fabian Tijssen, Edwin J P Jansen
BACKGROUND: Hypothermia is an important complication in joint arthroplasty. Commonly, forced air warming (FAW) devices are used intraoperatively to maintain body temperature in patients undergoing surgery. However, it is believed that these convective warming systems could increase the risk of deep surgical site infections due to disruption of unidirectional downward laminar airflow. Conductive warming devices have no noticeable effect on ventilation airflow. Nevertheless, the effectiveness of the self-warming (SW) blanket, a novel conductive warming device, on postoperative hypothermia in elective joint arthroplasty is unknown...
September 2017: Orthopaedic Nursing
https://www.readbyqxmd.com/read/28930612/genetic-addiction-risk-score-gars-%C3%A2-a-predictor-of-vulnerability-to-opioid-dependence
#18
Kenneth Blum, Amanda L C Chen, Panayotis K Thanos, Marcelo Febo, Zsolt Demetrovics, Kristina Dushaj, Abraham Kovoor, David Baron, David E Smith, Alphonso Kenison Roy Iii, Lyle Fried, Thomas J H Chen, Edwin Chapman, Edward Modestino, Bruce Steinberg, Rajendra D Badgaiyan
The interaction of neurotransmitters and genes that control the release of dopamine is the Brain Reward Cascade (BRC). Variations within the BRC, whether genetic or epigenetic, may predispose individuals to addictive behaviors and altered pain tolerance. This discussion authored by a group of concerned scientists and clinicians examines the Genetic Addiction Risk Score (GARS), the first test to accurately predict vulnerability to pain, addiction, and other compulsive behaviors, defined as Reward Deficiency Syndrome (RDS)...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28930197/red-blood-cell-eicosapentaenoic-acid-inversely-relates-to-mri-assessed-carotid-plaque-lipid-core-burden-in-elders-at-high-cardiovascular-risk
#19
Núria Bargalló, Rosa Gilabert, Edwin-Saúl Romero-Mamani, Montserrat Cofán, Philip C Calder, Montserrat Fitó, Dolores Corella, Jordi Salas-Salvadó, Miguel Ruiz-Canela, Ramon Estruch, Emilio Ros, Aleix Sala-Vila
Supplemental marine omega-3 eicosapentaenoic acid (EPA) has an anti-atherosclerotic effect. Clinical research on EPA supplied by the regular diet and atherosclerosis is scarce. In the framework of the PREvención con DIeta MEDiterránea (PREDIMED) trial, we conducted a cross-sectional study in 161 older individuals at high vascular risk grouped into different stages of carotid atherosclerosis severity, including those without ultrasound-detected atheroma plaque (n = 38), with plaques <2.0 mm thick (n = 65), and with plaques ≥2...
September 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28929448/acid-rock-drainage-in-nevado-pastoruri-glacier-area-huascar%C3%A3-n-national-park-per%C3%A3%C2%BA-hydrochemical-and-mineralogical-characterization-and-associated-environmental-implications
#20
Esther Santofimia, Enrique López-Pamo, Edwin Julio Palomino, Elena González-Toril, Ángeles Aguilera
The generation of acid rock drainage (ARD) was observed in an area of Nevado Pastoruri as a result of the oxidative dissolution of pyrite-rich lutites and sandstones. These ARDs are generated as abundant pyrite becomes exposed to atmospheric conditions as a result of glacier retreat. The proglacial zone contains lagoons, springs, streams and wetlands, scant vegetation, and intense fluvioglacial erosion. This work reports a comprehensive identification and the results of sampling of the lagoons and springs belonging to the microbasin, which is the headwaters of the Pachacoto River, as well as mapping results based on the hydrochemical data obtained in our study...
September 19, 2017: Environmental Science and Pollution Research International
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