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https://www.readbyqxmd.com/read/29454244/-keeping-birth-normal-exploratory-evaluation-of-a-training-package-for-midwives-in-an-inner-city-alongside-midwifery-unit
#1
Shawn Walker, Laura Batinelli, Lucia Rocca-Ihenacho, Christine McCourt
OBJECTIVES: to gain understanding about how participants perceived the value and effectiveness of 'Keeping Birth Normal' training, barriers to implementing it in an along-side midwifery unit, and how the training might be enhanced in future iterations. DESIGN: exploratory interpretive. SETTING: inner-city maternity service. PARTICIPANTS: 31 midwives attending a one-day training package on one of three occasions. METHODS: data were collected using semi-structured observation of the training, a short feedback form (23/31 participants), and focus groups (28/31 participants)...
February 2, 2018: Midwifery
https://www.readbyqxmd.com/read/29454160/vascular-parameters-continue-to-decrease-post-exposure-with-simultaneous-but-not-individual-exposure-to-bpa-and-hypoxia-in-zebrafish-larvae
#2
Alysha D Cypher, Bryce Fetterman, Brian Bagatto
How fish respond to hypoxia, a common stressor, can be altered by simultaneous exposure to pollutants like bisphenol A (BPA), a plasticizer. BPA is cardiotoxic and interferes with the hypoxia inducible factor pathway (HIF-1α), therefore disrupting the hypoxic response. Co-exposure to hypoxia and BPA also causes severe bradycardia and reduced cardiac output in zebrafish larvae. The purpose of this work was to determine how the cardiovascular effects of co-exposure vary with BPA concentration and persist beyond exposure...
February 14, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29454079/a-novel-metric-that-quantifies-risk-stratification-for-evaluating-diagnostic-tests-the-example-of-evaluating-cervical-cancer-screening-tests-across-populations
#3
Hormuzd A Katki, Mark Schiffman
Our work involves assessing whether new biomarkers might be useful for cervical-cancer screening across populations with different disease prevalences and biomarker distributions. When comparing across populations, we show that standard diagnostic accuracy statistics (predictive values, risk-differences, Youden's index and Area Under the Curve (AUC)) can easily be misinterpreted. We introduce an intuitively simple statistic for a 2 × 2 table, Mean Risk Stratification (MRS): the average change in risk (pre-test vs...
February 14, 2018: Preventive Medicine
https://www.readbyqxmd.com/read/29453930/ensemble-survival-tree-models-to-reveal-pairwise-interactions-of-variables-with-time-to-events-outcomes-in-low-dimensional-setting
#4
Jean-Eudes Dazard, Hemant Ishwaran, Rajeev Mehlotra, Aaron Weinberg, Peter Zimmerman
Unraveling interactions among variables such as genetic, clinical, demographic and environmental factors is essential to understand the development of common and complex diseases. To increase the power to detect such variables interactions associated with clinical time-to-events outcomes, we borrowed established concepts from random survival forest (RSF) models. We introduce a novel RSF-based pairwise interaction estimator and derive a randomization method with bootstrap confidence intervals for inferring interaction significance...
February 17, 2018: Statistical Applications in Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29453767/increasing-connectivity-between-metapopulation-ecology-and-landscape-ecology
#5
Paige E Howell, Erin Muths, Blake R Hossack, Brent H Sigafus, Richard B Chandler
Metapopulation ecology and landscape ecology aim to understand how spatial structure influences ecological processes, yet these disciplines address the problem using fundamentally different modeling approaches. Metapopulation models describe how the spatial distribution of patches affects colonization and extinction, but often do not account for the heterogeneity in the landscape between patches. Models in landscape ecology use detailed descriptions of landscape structure, but often without considering colonization and extinction dynamics...
February 17, 2018: Ecology
https://www.readbyqxmd.com/read/29453702/the-relationship-between-local-recurrences-and-distant-metastases-in-prostate-cancer-can-11-c-choline-pet-ct-contribute-to-understand-the-link
#6
Giampiero Giovacchini, Andrea Ciarmiello, Elisabetta Giovannini, Andrei Fodor, Cesare Cozzarini, Paola Mapelli, Elena Incerti, Nadia Di Muzio, Luigi Gianolli, Maria Picchio
PURPOSE: Previous studies in prostate cancer (PCa) patients tried to correlate the onset of local recurrence (LR) with the development of distant metastases and formulated, based on theoretical and experimental data, hypotheses linking the two events. We aimed to address this issue with 11 C-choline positron emission tomography/computed tomography (PET/CT). METHODS: This retrospective study included 491 PCa patients previously treated with radical prostatectomy who had undergone 11 C-choline PET/CT owing to biochemical failure...
February 16, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29453499/screening-for-gene-environment-g%C3%A3-e-interaction-using-omics-data-from-exposed-individuals-an-application-to-gene-arsenic-interaction
#7
Maria Argos, Lin Tong, Shantanu Roy, Mekala Sabarinathan, Alauddin Ahmed, Md Tariqul Islam, Tariqul Islam, Muhammad Rakibuz-Zaman, Golam Sarwar, Hasan Shahriar, Mahfuzar Rahman, Md Yunus, Joseph H Graziano, Farzana Jasmine, Muhammad G Kibriya, Xiang Zhou, Habibul Ahsan, Brandon L Pierce
Identifying gene-environment interactions is a central challenge in the quest to understand susceptibility to complex, multi-factorial diseases. Developing an understanding of how inter-individual variability in inherited genetic variation alters the effects of environmental exposures will enhance our knowledge of disease mechanisms and improve our ability to predict disease and target interventions to high-risk sub-populations. Limited progress has been made identifying gene-environment interactions in the epidemiological setting using existing statistical approaches for genome-wide searches for interaction...
February 16, 2018: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29452788/understanding-pre-peri-and-post-menopausal-women-s-intentions-to-perform-muscle-strengthening-activities-using-the-theory-of-planned-behaviour
#8
Julie Doherty, Melanie Giles, Alison M Gallagher, Ellen Elizabeth Anne Simpson
Although physical activity guidelines recommend muscle-strengthening activities (MSA), public health initiatives tend to focus on increasing aerobic activity and fail to mention MSA. This study sought to identify the issues influencing pre-, peri- and post-menopausal women's intentions to perform MSA with a view to informing future interventions for these populations. Mixed methods guided by the Theory of Planned Behaviour (TPB) were used to explore factors that influence women's intentions to perform MSA. In stage one, 34 women participated in either a focus group or interview...
March 2018: Maturitas
https://www.readbyqxmd.com/read/29451680/evaluating-the-kinetic-basis-of-plant-growth-from-organs-to-ecosystems
#9
REVIEW
Sean T Michaletz
Contents I. II. III. IV. V. VI. ORCID References SUMMARY: Understanding how temperature influences the scaling of physiological rates through levels of biological organization is critical for predicting plant responses to climate. Metabolic theory predicts that many rates increase exponentially with temperature following an activation energy (E) of 0.32 eV for photosynthesis. Here, I evaluate this prediction for net photosynthesis and organ, individual, and ecosystem growth. Observed E for photosynthesis varied widely but was not statistically different from predictions, while E for organs was greater than predicted, and E for individuals and ecosystems only weakly characterized temperature responses...
February 16, 2018: New Phytologist
https://www.readbyqxmd.com/read/29451659/environmental-factors-can-influence-dengue-reported-cases
#10
Marco Antonio F Carneiro, Beatriz da C A Alves, Flávia de Sousa Gehrke, José Nuno Domingues, Nelson Sá, Susana Paixão, João Figueiredo, Ana Ferreira, Cleonice Almeida, Amaury Machi, Eriane Savóia, Vânia Nascimento, Fernando Fonseca
INTRODUCTION: Global climate changes directly affect the natural environment and contribute to an increase in the transmission of diseases by vectors. Among these diseases, dengue is at the top of the list. The aim of our study was to understand the consequences of temporal variability of air temperature in the occurrence of dengue in an area comprising seven municipalities of the Greater São Paulo. METHOD: Characterization of a temporal trend of the disease in the region between 2010 and 2013 was performed through analysis of the notified number of dengue cases over this period...
November 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29451501/transitions-in-physiological-coupling-between-heartbeat-and-pulse-across-sleep-stages
#11
Qianli D Y Ma, Changjuan Ji, Huanhuan Xie, Kai Yin, Zhen Ma, Chunhua Bian
The aim of this study is to investigate the coupling behavior between heartbeat and pulse of blood flow at different sleep stages, and to explore the feasibility of using this coupling strength for automatic sleep staging.
 Approach: The electrocardiogram (ECG) and photoplethysmography (PPG) signals are recorded during sleep, and R-wave-to-R-wave intervals (RRI) and Pulse-to-Pulse intervals (PPI) are extracted respectively. The detrended cross-correlation analysis (DCCA) is applied to quantify long-range cross correlations between the RRIs and PPIs across sleep stages...
February 16, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29451323/-18f-av-1451-tau-pet-and-primary-progressive-aphasia
#12
Keith A Josephs, Peter R Martin, Hugo Botha, Christopher G Schwarz, Joseph R Duffy, Heather M Clark, Mary M Machulda, Jonathan Graff-Radford, Stephen D Weigand, Matthew L Senjem, Rene L Utianski, Daniel A Drubach, Bradley F Boeve, David T Jones, David S Knopman, Ronald C Petersen, Clifford R Jack, Val J Lowe, Jennifer L Whitwell
OBJECTIVES: To assess [ 18 F]AV-1451 tau-PET uptake patterns across the primary progressive aphasia (PPA) variants (logopenic, semantic and agrammatic), examine regional uptake patterns of [ 18 F]AV-1451 independent of clinical diagnosis, and compare the diagnostic utility of [ 18 F]AV-1451, [ 18 F]-fluorodeoxygluclose (FDG)-PET and MRI to differentiate the PPA variants. METHODS: We performed statistical parametric mapping of [ 18 F]AV-1451 across 40 PPA patients (logopenic-PPA=14, semantic-PPA=13 and agrammatic-PPA=13) compared to 80 cognitively normal, PiB-negative controls, age and gender matched 2:1...
February 16, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29451315/sensitivity-to-the-sampling-process-emerges-from-the-principle-of-efficiency
#13
Julian Jara-Ettinger, Felix Sun, Laura Schulz, Joshua B Tenenbaum
Humans can seamlessly infer other people's preferences, based on what they do. Broadly, two types of accounts have been proposed to explain different aspects of this ability. The first account focuses on spatial information: Agents' efficient navigation in space reveals what they like. The second account focuses on statistical information: Uncommon choices reveal stronger preferences. Together, these two lines of research suggest that we have two distinct capacities for inferring preferences. Here we propose that this is not the case, and that spatial-based and statistical-based preference inferences can be explained by the assumption that agents are efficient alone...
February 16, 2018: Cognitive Science
https://www.readbyqxmd.com/read/29450942/multivariate-analysis-of-cytokine-profiles-in-pregnancy-complications
#14
Fawaz Azizieh, Kamaludin Dingle, Raj Raghupathy, Kjell Johnson, Jacob VanderPlas, Ali Ansari
PROBLEM: The immunoregulation to tolerate the semiallogeneic fetus during pregnancy includes a harmonious dynamic balance between anti- and pro-inflammatory cytokines. Several earlier studies reported significantly different levels and/or ratios of several cytokines in complicated pregnancy as compared to normal pregnancy. However, as cytokines operate in networks with potentially complex interactions, it is also interesting to compare groups with multi-cytokine data sets, with multivariate analysis...
March 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29450524/effect-of-a-quality-improvement-intervention-on-clinical-outcomes-in-patients-in-india-with-acute-myocardial-infarction-the-acs-quik-randomized-clinical-trial
#15
Mark D Huffman, Padinhare P Mohanan, Raji Devarajan, Abigail S Baldridge, Dimple Kondal, Lihui Zhao, Mumtaj Ali, Mangalath N Krishnan, Syam Natesan, Rajesh Gopinath, Sunitha Viswanathan, Joseph Stigi, Johny Joseph, Somanathan Chozhakkat, Donald M Lloyd-Jones, Dorairaj Prabhakaran
Importance: Wide heterogeneity exists in acute myocardial infarction treatment and outcomes in India. Objective: To evaluate the effect of a locally adapted quality improvement tool kit on clinical outcomes and process measures in Kerala, a southern Indian state. Design, Setting, and Participants: Cluster randomized, stepped-wedge clinical trial conducted between November 10, 2014, and November 9, 2016, in 63 hospitals in Kerala, India, with a last date of follow-up of December 31, 2016...
February 13, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29450447/interplay-among-psychopathologic-variables-personal-resources-context-related-factors-and-real-life-functioning-in-individuals-with-schizophrenia-a-network-analysis
#16
Silvana Galderisi, Paola Rucci, Brian Kirkpatrick, Armida Mucci, Dino Gibertoni, Paola Rocca, Alessandro Rossi, Alessandro Bertolino, Gregory P Strauss, Eugenio Aguglia, Antonello Bellomo, Martino Belvederi Murri, Paola Bucci, Bernardo Carpiniello, Anna Comparelli, Alessandro Cuomo, Domenico De Berardis, Liliana Dell'Osso, Fabio Di Fabio, Barbara Gelao, Carlo Marchesi, Palmiero Monteleone, Cristiana Montemagni, Giulia Orsenigo, Francesca Pacitti, Rita Roncone, Paolo Santonastaso, Alberto Siracusano, Annarita Vignapiano, Antonio Vita, Patrizia Zeppegno, Mario Maj
Importance: Enhanced understanding of factors associated with symptomatic and functional recovery is instrumental to designing personalized treatment plans for people with schizophrenia. To date, this is the first study using network analysis to investigate the associations among cognitive, psychopathologic, and psychosocial variables in a large sample of community-dwelling individuals with schizophrenia. Objective: To assess the interplay among psychopathologic variables, cognitive dysfunctions, functional capacity, personal resources, perceived stigma, and real-life functioning in individuals with schizophrenia, using a data-driven approach...
February 14, 2018: JAMA Psychiatry
https://www.readbyqxmd.com/read/29449567/systematic-analysis-of-protein-turnover-in-primary-cells
#17
Toby Mathieson, Holger Franken, Jan Kosinski, Nils Kurzawa, Nico Zinn, Gavain Sweetman, Daniel Poeckel, Vikram S Ratnu, Maike Schramm, Isabelle Becher, Michael Steidel, Kyung-Min Noh, Giovanna Bergamini, Martin Beck, Marcus Bantscheff, Mikhail M Savitski
A better understanding of proteostasis in health and disease requires robust methods to determine protein half-lives. Here we improve the precision and accuracy of peptide ion intensity-based quantification, enabling more accurate protein turnover determination in non-dividing cells by dynamic SILAC-based proteomics. This approach allows exact determination of protein half-lives ranging from 10 to >1000 h. We identified 4000-6000 proteins in several non-dividing cell types, corresponding to 9699 unique protein identifications over the entire data set...
February 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29449564/aggregation-fragmentation-and-individual-dynamics-of-active-clusters
#18
F Ginot, I Theurkauff, F Detcheverry, C Ybert, C Cottin-Bizonne
A remarkable feature of active matter is the propensity to self-organize. One striking instance of this ability to generate spatial structures is the cluster phase, where clusters broadly distributed in size constantly move and evolve through particle exchange, breaking or merging. Here we propose an exhaustive description of the cluster dynamics in apolar active matter. Exploiting large statistics gathered on thousands of Janus colloids, we measure the aggregation and fragmentation rates and rationalize the resulting cluster size distribution and fluctuations...
February 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29448489/spontaneous-emergence-of-rogue-waves-in-partially-coherent-waves-a-quantitative-experimental-comparison-between-hydrodynamics-and-optics
#19
R El Koussaifi, A Tikan, A Toffoli, S Randoux, P Suret, M Onorato
Rogue waves are extreme and rare fluctuations of the wave field that have been discussed in many physical systems. Their presence substantially influences the statistical properties of a partially coherent wave field, i.e., a wave field characterized by a finite band spectrum with random Fourier phases. Their understanding is fundamental for the design of ships and offshore platforms. In many meteorological conditions waves in the ocean are characterized by the so-called Joint North Sea Wave Project (JONSWAP) spectrum...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448355/binding-constant-of-cell-adhesion-receptors-and-substrate-immobilized-ligands-depends-on-the-distribution-of-ligands
#20
Long Li, Jinglei Hu, Guangkui Xu, Fan Song
Cell-cell adhesion and the adhesion of cells to tissues and extracellular matrix, which are pivotal for immune response, tissue development, and cell locomotion, depend sensitively on the binding constant of receptor and ligand molecules anchored on the apposing surfaces. An important question remains of whether the immobilization of ligands affects the affinity of binding with cell adhesion receptors. We have investigated the adhesion of multicomponent membranes to a flat substrate coated with immobile ligands using Monte Carlo simulations of a statistical mesoscopic model with biologically relevant parameters...
January 2018: Physical Review. E
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