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https://www.readbyqxmd.com/read/29198986/australian-trends-in-procedural-characteristics-and-outcomes-in-patients-undergoing-percutaneous-coronary-intervention-for-st-elevation-myocardial-infarction
#1
Sinjini Biswas, Stephen J Duffy, Jeffrey Lefkovits, Nick Andrianopoulos, Angela Brennan, Antony Walton, William Chan, Samer Noaman, James A Shaw, Luke Dawson, Andrew Ajani, David J Clark, Melanie Freeman, Chin Hiew, Ernesto Oqueli, Christopher M Reid, Dion Stub
Over the last decade, systems of care for ST-elevation myocardial infarction (STEMI) have evolved to try to improve outcomes and timely access to percutaneous coronary intervention (PCI). There have also been advances in PCI techniques and adjunctive pharmacotherapies. In this study, we sought to determine temporal changes in practices and clinical outcomes of PCI in patients with STEMI. We prospectively collected data on 8,412 consecutive patients undergoing PCI for STEMI between 2005 and 2016 in the multicenter Melbourne Interventional Group registry...
October 31, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29180681/subthalamic-nucleus-deep-brain-stimulation-does-not-modify-the-functional-deficits-or-axonopathy-induced-by-nigrostriatal-%C3%AE-synuclein-overexpression
#2
D Luke Fischer, Fredric P Manfredsson, Christopher J Kemp, Allyson Cole-Strauss, Jack W Lipton, Megan F Duffy, Nicole K Polinski, Kathy Steece-Collier, Timothy J Collier, Sara E Gombash, Daniel J Buhlinger, Caryl E Sortwell
Subthalamic nucleus deep brain stimulation (STN DBS) protects dopaminergic neurons of the substantia nigra pars compacta (SNpc) against 6-OHDA and MPTP. We evaluated STN DBS in a parkinsonian model that displays α-synuclein pathology using unilateral, intranigral injections of recombinant adeno-associated virus pseudotype 2/5 to overexpress wildtype human α-synuclein (rAAV2/5 α-syn). A low titer of rAAV2/5 α-syn results in progressive forelimb asymmetry, loss of striatal dopaminergic terminal density and modest loss of SNpc dopamine neurons after eight weeks, corresponding to robust human-Snca expression and no effect on rat-Snca, Th, Bdnf or Trk2...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29154744/generation-and-characterization-of-a-novel-candidate-gene-therapy-and-vaccination-vector-based-on-human-species-d-adenovirus-type-56
#3
Margaret R Duffy, Julio Alonso-Padilla, Lijo John, Naresh Chandra, Selina Khan, Monika Z Ballmann, Agnieszka Lipiec, Evert Heemskerk, Jerome Custers, Niklas Arnberg, Menzo Havenga, Andrew H Baker, Angelique Lemckert
The vectorization of rare human adenovirus (HAdV) types will widen our knowledge of this family and their interaction with cells, tissues and organs. In this study we focus on HAdV-56, a member of human Ad species D, and create ease-of-use cloning systems to generate recombinant HAdV-56 vectors carrying foreign genes. We present in vitro transduction profiles for HAdV-56 in direct comparison to the most commonly used HAdV-5-based vector. In vivo characterizations demonstrate that when it is delivered intravenously (i...
November 20, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29150856/defining-sepsis-on-the-wards-results-of-a-multi-centre-point-prevalence-study-comparing-two-sepsis-definitions
#4
T Szakmany, R Pugh, M Kopczynska, R M Lundin, B Sharif, P Morgan, G Ellis, J Abreu, S Kulikouskaya, K Bashir, L Galloway, H Al-Hassan, T Grother, P McNulty, S T Seal, A Cains, M Vreugdenhil, M Abdimalik, N Dennehey, G Evans, J Whitaker, E Beasant, C Hall, M Lazarou, C V Vanderpump, K Harding, L Duffy, A Guerrier Sadler, R Keeling, C Banks, S W Y Ng, S Y Heng, D Thomas, E W Puw, I Otahal, C Battle, O Minik, R A Lyons, J E Hall
Our aim was to prospectively determine the predictive capabilities of SEPSIS-1 and SEPSIS-3 definitions in the emergency departments and general wards. Patients with National Early Warning Score (NEWS) of 3 or above and suspected or proven infection were enrolled over a 24-h period in 13 Welsh hospitals. The primary outcome measure was mortality within 30 days. Out of the 5422 patients screened, 431 fulfilled inclusion criteria and 380 (88%) were recruited. Using the SEPSIS-1 definition, 212 patients had sepsis...
November 17, 2017: Anaesthesia
https://www.readbyqxmd.com/read/29136839/chromisense-a-colourimetric-lab-on-a-disc-sensor-for-chromium-speciation-in-water
#5
G Duffy, I Maguire, Brendan Heery, Pauline Gers, J Ducrée, F Regan
The development of a centrifugal device for quantitative analysis of both chromium (III) and (VI) species in water is reported. ChromiSense is a colourimetric sensor system that has been applied to the measurement of chromium in spiked river water samples. For analysis, the sample is loaded into a reservoir on the disposable microfluidic disc, along with reagents. A centrifugal force is created by spinning the disc to pump liquids through microchannels, causing them to mix and react to form a coloured product...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29107703/orexin-hypocretin-treatment-restores-hippocampal-dependent-memory-in-orexin-deficient-mice
#6
Vijayakumar Mavanji, Tammy A Butterick, Cayla M Duffy, Joshua P Nixon, Charles J Billington, Catherine M Kotz
Orexin A is produced in neurons of the lateral, perifornical and dorsomedial regions of the lateral hypothalamic area, which then project widely throughout the central nervous system to regulate arousal state, sleep-wake architecture, energy homeostasis and cognitive processes. Disruption of orexin signaling leads to sleep disturbances and increased body mass index, but recent studies also indicate that orexin neuron activation improves learning and memory. We hypothesized that hippocampal orexin receptor activation improves memory...
October 28, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29102689/early-experience-with-new-transcatheter-mitral-valve-replacement
#7
Vinayak Bapat, Vivek Rajagopal, Christopher Meduri, R Saeid Farivar, Antony Walton, Stephen J Duffy, Robert Gooley, Aubrey Almeida, Michael J Reardon, Neal S Kleiman, Konstantinos Spargias, Stratis Pattakos, Martin K Ng, Michael Wilson, David H Adams, Martin Leon, Michael J Mack, Sharla Chenoweth, Paul Sorajja
BACKGROUND: Transcatheter mitral valve replacement (TMVR) is a potential therapy for patients with symptomatic, severe mitral regurgitation (MR). The feasibility of this therapy remains to be defined. OBJECTIVE: We report our early experience with TMVR using a new valve system. METHODS: The valve is a self-expanding, nitinol valve with bovine pericardial leaflets that is placed using a transapical delivery system. Patients with symptomatic MR who were deemed high or extreme risk by the local heart teams were enrolled in a global pilot study at 14 sites (U...
October 25, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29093225/specialized-mutualisms-may-constrain-the-geographical-distribution-of-flowering-plants
#8
Karl J Duffy, Steven D Johnson
It is commonly assumed that the geographical distributions of plants are governed mainly by abiotic variables. However, interactions with other organisms, such as pollinators, also have the potential to influence plant distributions. To investigate this, we developed niche models for 32 plant taxa that have specialized pollination systems and which are native to a biodiversity hotspot (South Africa). We found that the distributions of these taxa are best explained by a combination of biotic (pollinators) and abiotic factors, rather than by abiotic factors alone...
November 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29083458/key-elements-to-developing-a-preceptor-program
#9
Denise Duffy Nash, Monica Flowers
BACKGROUND: With competition from so many nursing programs seeking clinical sites and numerous nurses entering the health care industry, it is imperative to have a nurse preceptor program in health care institutions. METHOD: This article attempts to identify the essential components of a preceptor program by reviewing the literature, surveying RNs to identify curriculum, and suggesting an evidence-based preceptor program of value. RESULTS: Although there is much in the published literature and books about preceptors' roles and responsibilities, few references are available about how to start a preceptor program and program components...
November 1, 2017: Journal of Continuing Education in Nursing
https://www.readbyqxmd.com/read/29060037/electro-mechanical-response-of-a-3d-nerve-bundle-model-to-mechanical-loads-leading-to-axonal-injury
#10
I Cinelli, M Destrade, M Duffy, P McHugh
Axonal damage is one of the most common pathological features of traumatic brain injury, leading to abnormalities in signal propagation for nervous systems. We present a 3D fully coupled electro-mechanical model of a nerve bundle, made with the finite element software Abaqus 6.13-3. The model includes a real-time coupling, modulated threshold for spiking activation and independent alteration of the electrical properties for each 3-layer fibre within the bundle. Compression and tension are simulated to induce damage at the nerve membrane...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29044588/a-uniform-method-for-the-simultaneous-blood-group-phenotyping-of-fy-a-fy-b-jk-a-jk-b-s-s%C3%AC-p1-k-applying-lateral-flow-technique
#11
A Caesar, S Meyer, N Trost, K Neuenschwander, C Geisen, B M Frey, C Gassner, P Schwind
BACKGROUND AND OBJECTIVES: A lateral flow assay for simultaneous blood group typing of ABO, RhD, C, E, c, e, Cw and K with stable end-point and without centrifugation is in routine use since several years (MDmulticard(®) ). The typing of extended phenotype parameters belonging to the Duffy, Kidd, MNSs blood group systems and others, however, has not yet been demonstrated for this technique. Reliable detection of Fy(x) , a weak Fy(b) phenotype with a pronounced quantitative reduction of the number of Fy(b) antigens on the erythrocyte surface, remains a weakness of current serological blood grouping techniques...
October 16, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/29043827/stability-guidelines-for-dithiothreitol-treated-red-blood-cell-reagents-used-for-antibody-detection-methods-in-patients-treated-with-daratumumab
#12
Wendy L Disbro
Daratumumab (DARA), a drug used to treat patients with multiple myeloma, causes interference in pre-transfusion testing. Samples from patients receiving DARA exhibit panreactivity in antibody detection and identification tests with red blood cells (RBCs). Many hospitals are sending these samples to reference laboratories. Dithiothreitol (DTT), a sulfhydryl chemical treatment of RBCs, negates this reactivity. This study investigated the stability of the antigens on DTT-treated RBCs to determine if large quantities of RBCs could be treated at one time, stored, and used for testing at a later time...
September 2017: Immunohematology
https://www.readbyqxmd.com/read/29043613/the-chromosome-transmission-fidelity-assay-for-measuring-chromosome-loss-in-yeast
#13
Supipi Duffy, Philip Hieter
The budding yeast Saccharomyces cerevisiae has served as an excellent model system for studying highly conserved biological pathways including pathways involved in genome transmission and maintenance. The Chromosome Transmission Fidelity (CTF) colony color assay was developed to assess chromosome instability (CIN) in yeast, by monitoring the loss or gain during cell division of an artificial chromosome fragment carrying a visual marker. The CTF assay monitors changes in chromosome number, allowing the detection of mutants that exhibit increased rates of chromosome nondisjunction or chromosome loss...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29040338/classifying-dermoscopic-patterns-of-naevi-in-a-case-control-study-of-melanoma
#14
Seamus R McWhirter, David L Duffy, Katie J Lee, Glen Wimberley, Philip McClenahan, Natalie Ling, Marco Ardigo, Helmut Schaider, H Peter Soyer, Richard A Sturm
Changes in dermoscopic patterns of naevi may be associated with melanoma; however, there is no consensus on which dermoscopic classification system is optimal. To determine whether different classification systems give comparable results and can be combined for analysis, we applied two systems to a case-control study of melanoma with 1037 participants: 573 classified using a "1/3 major feature" system, 464 classified based on rules of appearance, and 263 classified with both criteria. There was strong correlation for non-specific (Spearman R = 0...
2017: PloS One
https://www.readbyqxmd.com/read/29023717/recovery-from-the-anatomical-effects-of-long-term-monocular-deprivation-in-cat-lateral-geniculate-nucleus
#15
Kevin R Duffy, Ming-Fai Fong, Donald E Mitchell, Mark F Bear
Monocular deprivation (MD) imposed early in postnatal life elicits profound structural and functional abnormalities throughout the primary visual pathway. The ability of MD to modify neurons within the visual system is restricted to a so-called critical period that, for cats, peaks at about one postnatal month and declines thereafter so that by about 3 months of age MD has little effect. Recovery from the consequences of MD likewise adheres to a critical period that ends by about 3 months of age, after which the effects of deprivation are thought to be permanent and without capacity for reversal...
October 11, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29020221/systemic-inflammatory-response-to-malaria-during-pregnancy-is-associated-with-pregnancy-loss-and-preterm-delivery
#16
Michal Fried, Jonathan D Kurtis, Bruce Swihart, Sunthorn Pond-Tor, Amadou Barry, Youssoufa Sidibe, Santara Gaoussou, Moussa Traore, Sekouba Keita, Almahamoudou Mahamar, Oumar Attaher, Adama B Dembele, Kadidia B Cisse, Bacary S Diarra, Moussa B Kanoute, Alassane Dicko, Patrick E Duffy
Background: Pregnancy malaria (PM) is associated with a proinflammatory immune response characterized by increased levels of cytokines and chemokines such as tumor necrosis factor-α, interferon-γ, interleukin 10 (IL-10), and CXCL9. These changes are associated with poor outcomes including low birthweight delivery and maternal anemia. However, it is unknown if inflammatory pathways during malaria are related to pregnancy loss and preterm delivery (PTD). Methods: Cytokine and chemokine levels were measured in maternal peripheral blood at enrollment, gestational week 30-32, and delivery, and in placental blood, of 638 women during a longitudinal cohort study in Ouelessebougou, Mali...
July 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28959245/phylogenomic-pan-genomic-pathogenomic-and-evolutionary-genomic-insights-into-the-agronomically-relevant-enterobacteria-pantoea-ananatis-and-pantoea-stewartii
#17
Pieter De Maayer, Habibu Aliyu, Surendra Vikram, Jochen Blom, Brion Duffy, Don A Cowan, Theo H M Smits, Stephanus N Venter, Teresa A Coutinho
Pantoea ananatis is ubiquitously found in the environment and causes disease on a wide range of plant hosts. By contrast, its sister species, Pantoea stewartii subsp. stewartii is the host-specific causative agent of the devastating maize disease Stewart's wilt. This pathogen has a restricted lifecycle, overwintering in an insect vector before being introduced into susceptible maize cultivars, causing disease and returning to overwinter in its vector. The other subspecies of P. stewartii subsp. indologenes, has been isolated from different plant hosts and is predicted to proliferate in different environmental niches...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28950155/production-of-high-fidelity-electropherograms-results-in-improved-and-consistent-dna-interpretation-standardizing-the-forensic-validation-process
#18
Kelsey C Peters, Harish Swaminathan, Jennifer Sheehan, Ken R Duffy, Desmond S Lun, Catherine M Grgicak
Samples containing low-copy numbers of DNA are routinely encountered in casework. The signal acquired from these sample types can be difficult to interpret as they do not always contain all of the genotypic information from each contributor, where the loss of genetic information is associated with sampling and detection effects. The present work focuses on developing a validation scheme to aid in mitigating the effects of the latter. We establish a scheme designed to simultaneously improve signal resolution and detection rates without costly large-scale experimental validation studies by applying a combined simulation and experimental based approach...
September 8, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28943400/standardized-whole-blood-stimulation-improves-immunomonitoring-of-induced-immune-responses-in-multi-center-study
#19
Darragh Duffy, Vincent Rouilly, Cecile Braudeau, Véronique Corbière, Raouf Djebali, Marie-Noelle Ungeheuer, Regis Josien, Samuel T LaBrie, Olivier Lantz, Delphine Louis, Eva Martinez-Caceres, Francoise Mascart, Jose G Ruiz de Morales, Catherine Ottone, Lydia Redjah, Nina Salabert-Le Guen, Alain Savenay, Manfred Schmolz, Antoine Toubert, Matthew L Albert
Functional immune responses are increasingly important for clinical studies, providing in depth biomarker information to assess immunotherapy or vaccination. Incorporating functional immune assays into routine clinical practice has remained limited due to challenges in standardizing sample preparation. We recently described the use of a whole blood syringe-based system, TruCulture®, which permits point-of-care standardized immune stimulation. Here, we report on a multi-center clinical study in seven FOCIS Centers of Excellence to directly compare TruCulture to conventional PBMC methods...
September 22, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28902417/genetic-variants-related-to-disease-susceptibility-and-immunotolerance-in-the-duffy-antigen-receptor-for-chemokines-darc-fy-gene-in-the-black-lion-tamarin-leontopithecus-chrysopygus-primates
#20
Ashley Ansel, James D Lewis, Don J Melnick, Cristiana Martins, Claudio Valladares-Padua, Beatriz Perez-Sweeney
The DARC (Duffy antigen receptor for chemokines) gene encodes the DARC protein, which serves multiple roles in the immune system, as a binding site for the malarial parasites Plasmodium vivax and Plasmodium knowlesi, a promiscuous chemokine receptor and a blood group antigen. Variation in DARC may play particularly significant roles in innate immunity, immunotolerance and pathogen entry in callitrichines, such as the black lion tamarin (Leontopithecus chrysopygus). We compared amino acid sequences of DARC in the black lion tamarin (BLT) to non-human Haplorhine primates and Homo sapiens...
October 2017: American Journal of Primatology
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