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https://www.readbyqxmd.com/read/28647489/a-high-throughput-assay-to-identify-substrate-selective-inhibitors-of-the-erk-protein-kinases
#1
Chad J Miller, Yagmur Muftuoglu, Benjamin E Turk
Extracellular signal-regulated kinases 1 and 2 (ERK1/2) phosphorylate a variety of substrates important for survival and proliferation, and their activity is frequently deregulated in tumors. ERK pathway inhibitors have shown clinical efficacy as anti-cancer drugs, but most patients eventually relapse due to reactivation of the pathway. One factor limiting the efficacy of current therapeutics is the difficulty in reaching clinically effective inhibition of the ERK pathway in the absence of on-target toxicities...
June 21, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28645137/-to-take-or-not-to-take-the-association-between-perceived-addiction-risk-expected-analgesic-response-and-likelihood-of-trying-novel-pain-relievers-in-self-identified-chronic-pain-patients
#2
D Andrew Tompkins, Andrew S Huhn, Patrick S Johnson, Michael T Smith, Eric C Strain, Robert R Edwards, Matthew W Johnson
BACKGROUND AND AIMS: Probability discounting refers to the effect of outcome uncertainty on decision making. Using probability discounting, we examined the degree to which self-identified chronic pain patients (CPP) were likely to try a novel analgesic medication given increasing addiction risk. We postulated that propensity for opioid misuse, trait impulsivity, and previous opioid experience would be positively associated with likelihood of risky medication use. DESIGN: This cross-sectional online study determined state/trait associations with addiction-related medication decisions in CPP...
June 23, 2017: Addiction
https://www.readbyqxmd.com/read/28639470/identifying-computer-generated-portraits-the-importance-of-training-and-incentives
#3
Brandon Mader, Martin S Banks, Hany Farid
The past two decades have seen remarkable advances in photo-realistic rendering of everything from inanimate objects to landscapes, animals, and humans. We previously showed that despite these tremendous advances, human observers remain fairly good at distinguishing computer-generated from photographic images. Building on these results, we describe a series of follow-up experiments that reveal how to improve observer performance. Of general interest to anyone performing psychophysical studies on Mechanical Turk or similar platforms, we find that observer performance can be significantly improved with the proper incentives...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28638330/flat-vs-expressive-storytelling-young-children-s-learning-and-retention-of-a-social-robot-s-narrative
#4
Jacqueline M Kory Westlund, Sooyeon Jeong, Hae W Park, Samuel Ronfard, Aradhana Adhikari, Paul L Harris, David DeSteno, Cynthia L Breazeal
Prior research with preschool children has established that dialogic or active book reading is an effective method for expanding young children's vocabulary. In this exploratory study, we asked whether similar benefits are observed when a robot engages in dialogic reading with preschoolers. Given the established effectiveness of active reading, we also asked whether this effectiveness was critically dependent on the expressive characteristics of the robot. For approximately half the children, the robot's active reading was expressive; the robot's voice included a wide range of intonation and emotion (Expressive)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28634154/improving-consensus-scoring-of-crowdsourced-data-using-the-rasch-model-development-and-refinement-of-a-diagnostic-instrument
#5
Christopher John Brady, Lucy Iluka Mudie, Xueyang Wang, Eliseo Guallar, David Steven Friedman
BACKGROUND: Diabetic retinopathy (DR) is a leading cause of vision loss in working age individuals worldwide. While screening is effective and cost effective, it remains underutilized, and novel methods are needed to increase detection of DR. This clinical validation study compared diagnostic gradings of retinal fundus photographs provided by volunteers on the Amazon Mechanical Turk (AMT) crowdsourcing marketplace with expert-provided gold-standard grading and explored whether determination of the consensus of crowdsourced classifications could be improved beyond a simple majority vote (MV) using regression methods...
June 20, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28633999/characteristics-of-a-mild-traumatic-brain-injury-sample-recruited-using-amazon-s-mechanical-turk
#6
John Bernstein, Matthew Calamia
BACKGROUND: Several barriers exist in the recruitment of individuals with a history of mild traumatic brain injury (mTBI). The current study is the first to examine whether crowdsourcing, which has been used in other clinical populations, is useful in the recruitment of those with mTBI. OBJECTIVE: To examine whether Amazon's Mechanical Turk (MTurk), an online crowdsourcing platform, is a useful tool in the recruitment of individuals with a history of mild traumatic brain injury (mTBI) and to examine the injury and psychological characteristics of individuals who report a history of mTBI...
June 17, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28633619/the-affect-misattribution-procedure
#7
Sarah Teige-Mocigemba, Manuel Becker, Jeffrey W Sherman, Regina Reichardt, Karl Christoph Klauer
The Affect Misattribution Procedure (AMP) has been forwarded as one of the most promising alternatives to the Implicit Association Test and the evaluative-priming task for measuring attitudes such as prejudice indirectly. We investigated whether the AMP is indeed able to detect an evaluative out-group bias. In contrast to recent conclusions about the robustness of AMP effects, six out of seven pilot studies indicated that participants did not show any prejudice effects in the AMP. Yet, these pilot studies were not fully conclusive with regard to our research question because they investigated different domains of prejudice, used small sample sizes, and employed a modified AMP version...
May 2017: Experimental Psychology
https://www.readbyqxmd.com/read/28630680/purely-entropic-self-assembly-of-the-bicontinuous-ia3d-gyroid-phase-in-equilibrium-hard-pear-systems
#8
Philipp W A Schönhöfer, Laurence J Ellison, Matthieu Marechal, Douglas J Cleaver, Gerd E Schröder-Turk
We investigate a model of hard pear-shaped particles which forms the bicontinuous Ia[Formula: see text]d structure by entropic self-assembly, extending the previous observations of Barmes et al. (2003 Phys. Rev. E68, 021708. (doi:10.1103/PhysRevE.68.021708)) and Ellison et al. (2006 Phys. Rev. Lett.97, 237801. (doi:10.1103/PhysRevLett.97.237801)). We specifically provide the complete phase diagram of this system, with global density and particle shape as the two variable parameters, incorporating the gyroid phase as well as disordered isotropic, smectic and nematic phases...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630677/non-lamellar-lipid-assembly-at-interfaces-controlling-layer-structure-by-responsive-nanogel-particles
#9
Aleksandra P Dabkowska, Maria Valldeperas, Christopher Hirst, Costanza Montis, Gunnar K Pálsson, Meina Wang, Sofi Nöjd, Luigi Gentile, Justas Barauskas, Nina-Juliane Steinke, Gerd E Schroeder-Turk, Sebastian George, Maximilian W A Skoda, Tommy Nylander
Biological membranes do not only occur as planar bilayer structures, but depending on the lipid composition, can also curve into intriguing three-dimensional structures. In order to fully understand the biological implications as well as to reveal the full potential for applications, e.g. for drug delivery and other biomedical devices, of such structures, well-defined model systems are required. Here, we discuss the formation of lipid non-lamellar liquid crystalline (LC) surface layers spin-coated from the constituting lipids followed by hydration of the lipid layer...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630666/curvature-driven-motion-of-a-bubble-in-a-toroidal-hele-shaw-cell
#10
A Mughal, S J Cox, G E Schröder-Turk
We investigate the equilibrium properties of a single area-minimizing bubble trapped between two narrowly separated parallel curved plates. We begin with the case of a bubble trapped between concentric spherical plates. We develop a model which shows that the surface energy of the bubble is lower when confined between spherical plates than between flat plates. We confirm our findings by comparing against Surface Evolver simulations. We then derive a simple model for a bubble between arbitrarily curved parallel plates...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630030/alzheimer-s-brains-show-inter-related-changes-in-rna-and-lipid-metabolism
#11
Shahar Barbash, Benjamin P Garfinkel, Rotem Maoz, Alon Simchovitz, Bettina Nadorp, Alessandro Guffanti, Estelle R Bennett, Courtney Nadeau, Andreas Türk, Lukas Paul, Torsten Reda, Yan Li, Aron S Buchman, David S Greenberg, Alexander Seitz, David A Bennett, Patrick Giavalisco, Hermona Soreq
Alzheimer's disease (AD) involves changes in both lipid and RNA metabolism, but it remained unknown if these differences associate with AD's cognition and/or post-mortem neuropathology indices. Here, we report RNA-sequencing evidence of inter-related associations between lipid processing, cognition level, and AD neuropathology. In two unrelated cohorts, we identified pathway-enriched facilitation of lipid processing and alternative splicing genes, including the neuronal-enriched NOVA1 and hnRNPA1. Specifically, this association emerged in temporal lobe tissue samples from donors where postmortem evidence demonstrated AD neuropathology, but who presented normal cognition proximate to death...
June 16, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28628594/telehealth-wearable-sensors-and-the-internet-will-they-improve-stroke-outcomes-through-increased-intensity-of-therapy-motivation-and-adherence-to-rehabilitation-programs
#12
Jane H Burridge, Alan Chong W Lee, Ruth Turk, Maria Stokes, Jill Whitall, Ravi Vaidyanathan, Phil Clatworthy, Ann-Marie Hughes, Claire Meagher, Enrico Franco, Lucy Yardley
BACKGROUND AND PURPOSE: Stroke, predominantly a condition of older age, is a major cause of acquired disability in the global population and puts an increasing burden on health care resources. Clear evidence for the importance of intensity of therapy in optimizing functional outcomes is found in animal models, supported by neuroimaging and behavioral research, and strengthened by recent meta-analyses from multiple clinical trials. However, providing intensive therapy using conventional treatment paradigms is expensive and sometimes not feasible because of social and environmental factors...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28627926/using-crowdsourcing-to-examine-behavioral-economic-measures-of-alcohol-value-and-proportionate-alcohol-reinforcement
#13
Vanessa Morris, Michael Amlung, Brent A Kaplan, Derek D Reed, Tashia Petker, James MacKillop
Online crowdsourcing websites such as Amazon's Mechanical Turk (MTurk) are increasingly being used in addictions research. However, there is a relative paucity of such research examining the validity of administering behavioral economic alcohol-related measures, via an online crowdsourcing platform. This study sought to validate an alcohol purchase task (APT) for assessing demand and a questionnaire measure of proportionate alcohol reinforcement, using an online sample of participants recruited via MTurk. Participants (N = 865, 59% female) were recruited via MTurk to complete the APT, proportionate alcohol reinforcement questionnaire, Alcohol Use Disorders Identification Test (AUDIT), and demographics...
June 19, 2017: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28627322/orienting-to-see-what-s-important-learn-to-ignore-the-irrelevant
#14
Mitchell Rabinowitz, Jaclin Gerstel-Friedman
BACKGROUND AND AIM: The current study used a triad judgment task to assess whether blocking by comparison type in a triad judgment task could lead people to pay less attention to surface level (irrelevant) features and pay more attention to deep (structural) features of information. SAMPLE: A sample of 313 participants recruited through Mechanical Turk participated in this study. METHOD: On each triad, participants were asked to evaluate which of two source scenarios went best with the target scenario...
June 19, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28624526/postoperative-urinary-retention-is-an-independent-predictor-of-short-and-long-term-future-bladder-outlet-procedure-in-men
#15
Robert H Blackwell, Srikanth Vedachalam, Arpeet S Shah, Anai N Kothari, Paul C Kuo, Gopal N Gupta, Thomas M T Turk
PURPOSE: Postoperative urinary retention (POUR) is a common complication across surgical specialties. To date, no literature has examined postoperative urinary retention as a predictor of long-term receipt of surgery for bladder outlet obstruction. MATERIALS AND METHODS: A retrospective review of inpatient, non-urologic surgery patients in California between 2008-2010 was performed. POUR during the index admission was identified, as was the receipt of a bladder outlet procedure (BOP: transurethral resection of prostate, photoselective vaporization of prostate, suprapubic prostatectomy) on a subsequent encounter...
June 14, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28623608/gambling-and-the-reasoned-action-model-predicting-past-behavior-intentions-and-future-behavior
#16
Ethan Dahl, Michael J Tagler, Zachary P Hohman
Gambling is a serious concern for society because it is highly addictive and is associated with a myriad of negative outcomes. The current study applied the Reasoned Action Model (RAM) to understand and predict gambling intentions and behavior. Although prior studies have taken a reasoned action approach to understand gambling, no prior study has fully applied the RAM or used the RAM to predict future gambling. Across two studies the RAM was used to predict intentions to gamble, past gambling behavior, and future gambling behavior...
June 16, 2017: Journal of Gambling Studies
https://www.readbyqxmd.com/read/28623277/in-vivo-quantification-of-placental-insufficiency-by-bold-mri-a-human-study
#17
Jie Luo, Esra Abaci Turk, Carolina Bibbo, Borjan Gagoski, Drucilla J Roberts, Mark Vangel, Clare M Tempany-Afdhal, Carol Barnewolt, Judy Estroff, Arvind Palanisamy, William H Barth, Chloe Zera, Norberto Malpica, Polina Golland, Elfar Adalsteinsson, Julian N Robinson, Patricia Ellen Grant
Fetal health is critically dependent on placental function, especially placental transport of oxygen from mother to fetus. When fetal growth is compromised, placental insufficiency must be distinguished from modest genetic growth potential. If placental insufficiency is present, the physician must trade off the risk of prolonged fetal exposure to placental insufficiency against the risks of preterm delivery. Current ultrasound methods to evaluate the placenta are indirect and insensitive. We propose to use Blood-Oxygenation-Level-Dependent (BOLD) MRI with maternal hyperoxia to quantitatively assess mismatch in placental function in seven monozygotic twin pairs naturally matched for genetic growth potential...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622943/cardiac-rehabilitation-costs
#18
Mahshid Moghei, Karam Turk-Adawi, Wanrudee Isaranuwatchai, Nizal Sarrafzadegan, Paul Oh, Caroline Chessex, Sherry L Grace
BACKGROUND: Despite the clinical benefits of cardiac rehabilitation (CR) and its cost-effectiveness, it is not widely received. Arguably, capacity could be greatly increased if lower-cost models were implemented. The aims of this review were to describe: the costs associated with CR delivery, approaches to reduce these costs, and associated implications. METHODS: Upon finalizing the PICO statement, information scientists were enlisted to develop the search strategy of MEDLINE, Embase, CDSR, Google Scholar and Scopus...
June 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28622532/evaluation-of-alcam-pecam-1-and-selectin-levels-in-intracranial-meningiomas
#19
Pinar Atukeren, Okan Turk, Karolin Yanar, Rahsan Kemerdere, Sima Sayyahmelli, Bulent Eren, Taner Tanriverdi
OBJECTIVES: Cell adhesion molecules play a major role in various pathological states. The aim of this study was to evaluate the tissue levels of selectins (E-, L-, and P-Selectins), activated leukocyte cell adhesion molecule (ALCAM) and platelet endothelial cell adhesion molecule-1 (PECAM-1) in intracranial meningiomas and compare with the levels in control tissues. PATIENTS AND METHODS: 20 consecutive patients who were operated on meningiomas (grade-I: 17 and grade-II: 3) and 15 cerebral tissues obtained during the autopsy procedures as a resource for the healthy controls were included in this study...
June 6, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28622394/y-chromosomal-analysis-of-greek-cypriots-reveals-a-primarily-common-pre-ottoman-paternal-ancestry-with-turkish-cypriots
#20
Alexandros Heraclides, Evy Bashiardes, Eva Fernández-Domínguez, Stefania Bertoncini, Marios Chimonas, Vasilis Christofi, Jonathan King, Bruce Budowle, Panayiotis Manoli, Marios A Cariolou
Genetics can provide invaluable information on the ancestry of the current inhabitants of Cyprus. A Y-chromosome analysis was performed to (i) determine paternal ancestry among the Greek Cypriot (GCy) community in the context of the Central and Eastern Mediterranean and the Near East; and (ii) identify genetic similarities and differences between Greek Cypriots (GCy) and Turkish Cypriots (TCy). Our haplotype-based analysis has revealed that GCy and TCy patrilineages derive primarily from a single gene pool and show very close genetic affinity (low genetic differentiation) to Calabrian Italian and Lebanese patrilineages...
2017: PloS One
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