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Michael Richardson

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https://www.readbyqxmd.com/read/29325149/anatomy-of-a-hotspot-chain-and-seroepidemiology-of-ebola-virus-transmission-sukudu-sierra-leone-2015-16
#1
J Daniel Kelly, Mohamed Bailor Barrie, Annelies W Mesman, Sahr Karku, Komba Quiwa, Michael Drasher, Gabriel Warren Slough, Kerry Dierberg, Songor Koedoyoma, Christina P Lindan, James Holland Jones, Gabriel Chamie, Lee Worden, Bryan Greenhouse, Sheri D Weiser, Travis C Porco, George W Rutherford, Eugene T Richardson
Studies have yet to include minimally symptomatic Ebola virus (EBOV) infections and unrecognized Ebola virus disease (EVD) in Ebola-related transmission chains and epidemiologic risk estimates. We conducted a cross-sectional, sero-epidemiological survey from October 2015 to January 2016 among 221 individuals living in quarantined households from November 2014 to February 2015 during the Ebola outbreak in the village of Sukudu, Sierra Leone. Of 48 EBOV infected-persons, 25% (95%CI, 14-40%) had minimally symptomatic EBOV infections and 4% (95%CI, 1-14%) were unrecognized EVD cases...
January 9, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29312815/satellite-tagging-highlights-the-importance-of-productive-mozambican-coastal-waters-to-the-ecology-and-conservation-of-whale-sharks
#2
Christoph A Rohner, Anthony J Richardson, Fabrice R A Jaine, Michael B Bennett, Scarla J Weeks, Geremy Cliff, David P Robinson, Katie E Reeve-Arnold, Simon J Pierce
The whale shark Rhincodon typus is an endangered, highly migratory species with a wide, albeit patchy, distribution through tropical oceans. Ten aerial survey flights along the southern Mozambican coast, conducted between 2004-2008, documented a relatively high density of whale sharks along a 200 km stretch of the Inhambane Province, with a pronounced hotspot adjacent to Praia do Tofo. To examine the residency and movement of whale sharks in coastal areas around Praia do Tofo, where they may be more susceptible to gill net entanglement, we tagged 15 juveniles with SPOT5 satellite tags and tracked them for 2-88 days (mean = 27 days) as they dispersed from this area...
2018: PeerJ
https://www.readbyqxmd.com/read/29305422/tumor-stressors-induce-two-mechanisms-of-intracellular-p-glycoprotein-mediated-resistance-that-are-overcome-by-lysosomal-targeted-thiosemicarbazones
#3
Lina Al-Akra, Dong-Hun Bae, Sumit Sahni, Michael L H Huang, Kyung Chan Park, Darius J R Lane, Patric J Jansson, Des R Richardson
Multi-drug resistance (MDR) is a major obstacle in cancer treatment due to the ability of tumor cells to efflux chemotherapeutics via drug transporters e.g., P-glycoprotein (Pgp; ABCB1). While the mechanism of Pgp-mediated drug efflux is known at the plasma membrane, the functional role of intracellular Pgp is unclear. Moreover, there has been intense focus on the tumor micro-environment as a target for cancer treatment. This investigation aimed to dissect the effects of tumor micro-environmental stress on sub-cellular Pgp expression, localization and its role in MDR...
January 5, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29275055/unexpected-mitral-regurgitation-during-coronary-artery-bypass-graft-surgery-the-multidisciplinary-management-of-a-mitral-valve-cleft
#4
Rohesh J Fernando, Sean D Johnson, Prakash A Patel, Jacob T Gutsche, Derek Lauter, Jared W Feinman, Eric Guelaff, Stuart J Weiss, Karl M Richardson, Michael L Boisen, Theresa A Gelzinis, John G Augoustides
No abstract text is available yet for this article.
September 9, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29273878/laparoscopic-common-bile-duct-exploration
#5
Marc Zerey, Stephen Haggerty, William Richardson, Byron Santos, Robert Fanelli, L Michael Brunt, Dimitrios Stefanidis
No abstract text is available yet for this article.
December 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29242937/paclitaxel-with-and-without-pazopanib-for-persistent-or-recurrent-ovarian-cancer-a-randomized-clinical-trial
#6
Debra L Richardson, Michael W Sill, Robert L Coleman, Anil K Sood, Michael L Pearl, Siobhan M Kehoe, Michael E Carney, Parviz Hanjani, Linda Van Le, Xun C Zhou, Angeles Alvarez Secord, Heidi J Gray, Lisa M Landrum, Heather A Lankes, Wei Hu, Carol Aghajanian
Importance: Ovarian cancer is the leading cause of gynecologic cancer deaths in the United States. Pazopanib is an oral, multitarget kinase inhibitor of vascular endothelial growth factor receptors 1, 2, and 3; platelet-derived growth factor receptors α and β; and proto-oncogene receptor tyrosine kinase (c-KIT). Objective: To estimate the progression-free survival (PFS) hazard ratio (HR) of weekly paclitaxel and pazopanib compared with weekly paclitaxel and placebo in women with recurrent ovarian cancer...
December 14, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/29229672/detecting-differential-copy-number-variation-between-groups-of-samples
#7
Craig B Lowe, Nicelio Sanchez-Luege, Timothy R Howes, Shannon D Brady, Rhea R Richardson, Felicity C Jones, Michael A Bell, David M Kingsley
We present a method to detect copy number variants (CNVs) that are differentially present between two groups of sequenced samples. We use a finite-state transducer where the emitted read depth is conditioned on the mappability and GC-content of all reads that occur at a given base position. In this model, the read depth within a region is a mixture of binomials, which in simulations matches the read depth more closely than the often-used negative binomial distribution. The method analyzes all samples simultaneously, preserving uncertainty as to the breakpoints and magnitude of CNVs present in an individual when it identifies CNVs differentially present between the two groups...
December 11, 2017: Genome Research
https://www.readbyqxmd.com/read/29224839/intraoperative-costs-of-video-assisted-thoracoscopic-lobectomy-can-be-dramatically-reduced-without-compromising-outcomes
#8
Michael T Richardson, Leah M Backhus, Mark F Berry, Daniel G Vail, Kelsey C Ayers, Jalen A Benson, Prasha Bhandari, Mehran Teymourtash, Joseph B Shrager
OBJECTIVE: To determine whether surgeon selection of instrumentation and other supplies during video-assisted thoracoscopic lobectomy (VATSL) can safely reduce intraoperative costs. METHODS: In this retrospective, cost-focused review of all video-assisted thoracoscopic surgery anatomic lung resections performed by 2 surgeons at a single institution between 2010 and 2014, we compared VATSL hospital costs and perioperative outcomes between the surgeons, as well as costs of VATSL compared with thoracotomy lobectomy (THORL)...
November 13, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29220880/development-of-a-new-biochip-array-for-apoe4-classification-from-plasma-samples-using-immunoassay-based-methods
#9
Sigrun Badrnya, Tara Doherty, Ciaran Richardson, Robert I McConnell, John V Lamont, Michael Veitinger, Stephen P FitzGerald, Maria Zellner, Ellen Umlauf
BACKGROUND: Apolipoprotein E (APOE) is a key player in lipid transport and metabolism and exists in three common isoforms: APOE2, APOE3 and APOE4. The presence of the E4 allelic variant is recognized as a major genetic risk factor for dementia and other chronic (neuro)degenerative diseases. The availability of a validated assay for rapid and reliable APOE4 classification is therefore advantageous. METHODS: Biochip array technology (BAT) was successfully applied to identify directly the APOE4 status from plasma within 3 h, through simultaneous immunoassay-based detection of both specific APOE4 and total APOE levels...
December 7, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29192343/a-view-on-the-importance-of-multi-attribute-method-for-measuring-purity-of-biopharmaceuticals-and-improving-overall-control-strategy
#10
Richard S Rogers, Michael Abernathy, Douglas D Richardson, Jason C Rouse, Justin B Sperry, Patrick Swann, Jette Wypych, Christopher Yu, Li Zang, Rohini Deshpande
Today, we are experiencing unprecedented growth and innovation within the pharmaceutical industry. Established protein therapeutic modalities, such as recombinant human proteins, monoclonal antibodies (mAbs), and fusion proteins, are being used to treat previously unmet medical needs. Novel therapies such as bispecific T cell engagers (BiTEs), chimeric antigen T cell receptors (CARTs), siRNA, and gene therapies are paving the path towards increasingly personalized medicine. This advancement of new indications and therapeutic modalities is paralleled by development of new analytical technologies and methods that provide enhanced information content in a more efficient manner...
November 30, 2017: AAPS Journal
https://www.readbyqxmd.com/read/29186423/improving-amphibian-genomic-resources-a-multi-tissue-reference-transcriptome-of-an-iconic-invader
#11
Mark F Richardson, Fernando Sequeira, Daniel Selechnik, Miguel Carneiro, Marcelo Vallinoto, Jack G Reid, Andrea J West, Michael R Crossland, Richard Shine, Lee A Rollins
Background: Cane toads (Rhinella marina) are an iconic invasive species introduced to four continents and well utilized for studies of rapid evolution in introduced environments. Despite the long introduction history of this species, its profound ecological impacts and its utility for demonstrating evolutionary principles, genetic information is sparse. Here we produce a de novo transcriptome spanning multiple tissues and life stages to enable investigation of the genetic basis of previously identified rapid phenotypic change over the introduced range...
November 27, 2017: GigaScience
https://www.readbyqxmd.com/read/29182270/advances-in-the-chemical-biology-of-desferrioxamine-b-dfob
#12
Rachel Codd, Tomas Richardson-Sanchez, Thomas J Telfer, Michael P Gotsbacher
Desferrioxamine B (DFOB) was discovered in the late 1950s as a hydroxamic acid metabolite of the soil bacterium Streptomyces pilosus. The exquisite affinity of DFOB for Fe(III) identified its potential for removing excess iron from patients with transfusion-dependent hemoglobin disorders. Many studies have used semi-synthetic chemistry to produce DFOB adducts with new properties and broad-ranging functions. More recent approaches in chemical biology have revealed some nuances of DFOB biosynthesis and discovered new DFOB-derived drugs and radiometal imaging agents...
November 28, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29175535/application-of-prognostic-scores-in-the-stopah-trial-discriminant-function-is-no-longer-the-optimal-scoring-system-in-alcoholic-hepatitis
#13
Ewan H Forrest, Stephen R Atkinson, Paul Richardson, Steven Masson, Stephen Ryder, Mark R Thursz, Michael Allison
BACKGROUND AND AIMS: 'Static' prognostic models in alcoholic hepatitis (AH), using data from a single time point, include the Discriminant Function (DF), Glasgow Alcoholic Hepatitis Score (GAHS), the Age, Bilirubin, INR and Creatinine (ABIC) score and the Model of End-Stage Liver Disease (MELD).'Dynamic' scores, incorporating evolution of bilirubin at 7 days, include the Lille Score. The aim of this study was to assess these scores' performance in patients from the STOPAH trial. METHODS: Predictive performance of scores was assessed by area under the Receiver Operating Curve (AUC)...
November 21, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29165057/pulmonary-toxicity-and-global-gene-expression-changes-in-response-to-sub-chronic-inhalation-exposure-to-crystalline-silica-in-rats
#14
Christina Umbright, Rajendran Sellamuthu, Jenny R Roberts, Shih-Houng Young, Diana Richardson, Diane Schwegler-Berry, Walter McKinney, Bean Chen, Ja Kook Gu, Michael Kashon, Pius Joseph
Exposure to crystalline silica results in serious adverse health effects, most notably, silicosis. An understanding of the mechanism(s) underlying silica-induced pulmonary toxicity is critical for the intervention and/or prevention of its adverse health effects. Rats were exposed by inhalation to crystalline silica at a concentration of 15 mg/m(3), 6 hr/day, 5 days/week for 3, 6 or 12 weeks. Pulmonary toxicity and global gene expression profiles were determined in lungs at the end of each exposure period...
2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29157590/mechanisms-influencing-older-adolescents-bedtimes-during-videogaming-the-roles-of-game-difficulty-and-flow
#15
Lisa J Smith, Daniel L King, Cele Richardson, Brandy M Roane, Michael Gradisar
A relationship between evening technology use and sleep has been established, and models suggest various mechanisms to explain this relationship. Recent updates to these models also suggest the influence of individual difference factors, such that the relationship between technology and sleep varies between young people. Flow is an experience of immersion and time distortion that could vary between adolescents when using technology. The aim of the present study was to investigate the effects of flow on the self-selected bedtimes of adolescents when videogaming...
November 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29156248/the-symbolic-violence-of-outbreak-a-mixed-methods-quasi-experimental-impact-evaluation-of-social-protection-on-ebola-survivor-wellbeing
#16
Eugene T Richardson, J Daniel Kelly, Osman Sesay, Michael D Drasher, Ishaan K Desai, Raphael Frankfurter, Paul E Farmer, Mohamed Bailor Barrie
Despite over 28,000 reported cases of Ebola virus disease (EVD) in the 2013-16 outbreak in West Africa, we are only beginning to trace the complex biosocial processes that have promoted its spread. Important questions remain, including the effects on survivors of clinical sequelae, loss of family and livelihood, and other psychological and social trauma. Another poorly understood question is what effect social protection and job creation programs have had on survivors' wellbeing. Several clinical and social protection programs have been developed to respond to the needs of EVD survivors; however, little in the way of impact evaluation has taken place...
November 11, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29152904/creating-time-social-collaboration-in-music-improvisation
#17
Ashley E Walton, Auriel Washburn, Peter Langland-Hassan, Anthony Chemero, Heidi Kloos, Michael J Richardson
Musical collaboration emerges from the complex interaction of environmental and informational constraints, including those of the instruments and the performance context. Music improvisation in particular is more like everyday interaction in that dynamics emerge spontaneously without a rehearsed score or script. We examined how the structure of the musical context affords and shapes interactions between improvising musicians. Six pairs of professional piano players improvised with two different backing tracks while we recorded both the music produced and the movements of their heads, left arms, and right arms...
November 20, 2017: Topics in Cognitive Science
https://www.readbyqxmd.com/read/29149183/vaccine-effectiveness-against-laboratory-confirmed-influenza-hospitalizations-among-young-children-during-the-2010-11-to-2013-14-influenza-seasons-in-ontario-canada
#18
Sarah A Buchan, Hannah Chung, Michael A Campitelli, Natasha S Crowcroft, Jonathan B Gubbay, Timothy Karnauchow, Kevin Katz, Allison J McGeer, J Dayre McNally, David Richardson, Susan E Richardson, Laura C Rosella, Andrew Simor, Marek Smieja, Dat Tran, George Zahariadis, Jeffrey C Kwong
Uncertainty remains regarding the magnitude of effectiveness of influenza vaccines for preventing serious outcomes, especially among young children. We estimated vaccine effectiveness (VE) against laboratory-confirmed influenza hospitalizations among children aged 6-59 months. We used the test-negative design in hospitalized children in Ontario, Canada during the 2010-11 to 2013-14 influenza seasons. We used logistic regression models adjusted for age, season, and time within season to calculate VE estimates by vaccination status (full vs...
2017: PloS One
https://www.readbyqxmd.com/read/29143570/the-perceptual-responses-to-high-velocity-low-load-and-low-velocity-high-load-resistance-exercise-in-older-adults
#19
Darren L Richardson, Michael J Duncan, Alfonso Jimenez, Victoria M Jones, Paul M Juris, Neil D Clarke
The present study examined exercise affect during volume-load matched, high-velocity, low-load and low-velocity, high-load resistance exercise conditions in older adults. Ten older adults completed three sets of eight exercises on six separate occasions (three high-velocity, low-load and three low-velocity, high-load sessions) in a crossover study design. High-velocity, low-load was performed at 40% of predicted one repetition maximum, and low-velocity, high-load at 80%. The Physical Activity Affect Scale, Felt Arousal Scale, Feeling Scale, Rating of Perceived Exertion, Visual Analogue Scales, and the Physical Activity Enjoyment Scale examined exercise intensity and affect...
November 16, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29137189/microscopic-and-molecular-tracing-of-cryptosporidium-oocysts-identifying-a-possible-reservoir-of-infection-in-red-grouse
#20
David Baines, Michaela Giles, Michael Richardson
Infection by Cryptosporidiumbaileyi causes respiratory cryptosporidiosis in red grouse Lagopuslagopusscotica. First diagnosed in 2010, it has since been detected across half of moors managed for grouse shooting in northern England. We hypothesised that contaminated grouse faeces within communal trays visited by grouse containing grit coated with flubendazole, provided to control Trichostrongylustenuis parasites of grouse, is a reservoir of infection. To establish the basis to this hypothesis, contents of 23 trays from a grouse moor were examined for Cryptosporidium oocysts...
November 13, 2017: Pathogens
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