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https://www.readbyqxmd.com/read/28920521/implementing-evidence-based-smoking-cessation-treatment-in-psychosocial-care-units-caps-in-brazil
#1
João Mauricio Castaldelli-Maia, Nilson R da Silva, Marta Rd Campos, Helena F Moura, Gustavo Zabert, Beatriz M Champagne, Katherine E Kemper, J Taylor Hays
BACKGROUND: The prevalence of smoking among mental health and addiction (MHA) patients is 3 times higher than it is in the general population, yet this patient population has received little help to combat smoking. Considering this, psychosocial care centers (CAPS - Centros de Atenção Psicossocial) are strategic locations for integrating tobacco dependence treatment (TDT) into existing treatment activities. METHODS: Our team provided an 8-hour training package to the staff of CAPS that have not been providing specialized TDT for smokers...
September 1, 2017: International Journal of Social Psychiatry
https://www.readbyqxmd.com/read/28919931/improving-hierarchical-models-using-historical-data-with-applications-in-high-throughput-genomics-data-analysis
#2
Ben Li, Yunxiao Li, Zhaohui S Qin
Modern high-throughput biotechnologies such as microarray and next generation sequencing produce a massive amount of information for each sample assayed. However, in a typical high-throughput experiment, only limited amount of data are observed for each individual feature, thus the classical 'large p, small n' problem. Bayesian hierarchical model, capable of borrowing strength across features within the same dataset, has been recognized as an effective tool in analyzing such data. However, the shrinkage effect, the most prominent feature of hierarchical features, can lead to undesirable over-correction for some features...
June 2017: Statistics in Biosciences
https://www.readbyqxmd.com/read/28919663/methods-for-scalar-on-function-regression
#3
Philip T Reiss, Jeff Goldsmith, Han Lin Shang, R Todd Ogden
Recent years have seen an explosion of activity in the field of functional data analysis (FDA), in which curves, spectra, images, etc. are considered as basic functional data units. A central problem in FDA is how to fit regression models with scalar responses and functional data points as predictors. We review some of the main approaches to this problem, categorizing the basic model types as linear, nonlinear and nonparametric. We discuss publicly available software packages, and illustrate some of the procedures by application to a functional magnetic resonance imaging dataset...
August 2017: International Statistical Review, Revue Internationale de Statistique
https://www.readbyqxmd.com/read/28918765/three-dimensional-3d-nanometrology-based-on-scanning-electron-microscope-sem-stereophotogrammetry
#4
Vipin N Tondare, John S Villarrubia, András E Vlada R
Three-dimensional (3D) reconstruction of a sample surface from scanning electron microscope (SEM) images taken at two perspectives has been known for decades. Nowadays, there exist several commercially available stereophotogrammetry software packages. For testing these software packages, in this study we used Monte Carlo simulated SEM images of virtual samples. A virtual sample is a model in a computer, and its true dimensions are known exactly, which is impossible for real SEM samples due to measurement uncertainty...
September 18, 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28918518/micro-rna-profiling-of-exosomes-from-marrow-derived-mesenchymal-stromal-cells-in-patients-with-acute-myeloid-leukemia-implications-in-leukemogenesis
#5
Juliana Barrera-Ramirez, Jessie R Lavoie, Harinad B Maganti, William L Stanford, Caryn Ito, Mitchell Sabloff, Marjorie Brand, Michael Rosu-Myles, Yevgeniya Le, David S Allan
Gene regulatory networks in AML may be influenced by microRNAs (miRs) contained in exosomes derived from bone marrow mesenchymal stromal cells (MSCs). We sequenced miRs from exosomes isolated from marrow-derived MSCs from patients with AML (n = 3) and from healthy controls (n = 3; not age-matched). Known targets of mIRs that were significantly different in AML-derived MSC exosomes compared to controls were identified. Of the five candidate miRs identified by differential packaging in exosomes, only miR-26a-5p and miR-101-3p were significantly increased in AML-derived samples while miR-23b-5p, miR-339-3p and miR-425-5p were significantly decreased...
September 16, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28918073/a-directed-evolution-approach-to-select-for-novel-adeno-associated-virus-capsids-on-an-hiv-1-producer-t-cell-line
#6
Dawn P Wooley, Priyanka Sharma, John R Weinstein, Poornima Kotha Lakshmi Narayan, David V Schaffer, Katherine J D A Excoffon
A directed evolution approach was used to select for Adeno-associated virus (AAV) capsids that would exhibit more tropism toward an HIV-1 producer T cell line with the long-term goal of developing improved gene transfer vectors. A library of AAV variants was used to infect H9T cells previously infected or uninfected by HIV-1 followed by AAV amplification with wild-type adenovirus. Six rounds of biological selection were performed, including negative selection and diversification after round three. The H9T cells were successfully infected with all three wild-type viruses (AAV, adenovirus, and HIV-1)...
September 13, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28917725/a-computational-approach-for-phenotypic-comparisons-of-cell-populations-in-high-dimensional-cytometry-data
#7
Ludovic Platon, David Pejoski, Guillaume Gautreau, Brice Targat, Roger Le Grand, Anne-Sophie Beignon, Nicolas Tchitchek
BACKGROUND: Cytometry is an experimental technique used to measure molecules expressed by cells at a single cell resolution. Recently, several technological improvements have made possible to increase greatly the number of cell markers that can be simultaneously measured. Many computational methods have been proposed to identify clusters of cells having similar phenotypes. Nevertheless, only a limited number of computational methods exist to compare the phenotypes of the cell clusters identified by different clustering approaches...
September 13, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28916437/sex-specific-99th-percentiles-derived-from-the-aacc-universal-sample-bank-for-the-roche-gen-5-ctnt-assay-comorbidities-and-statistical-methods-influence-derivation-of-reference-limits
#8
Ian L Gunsolus, Allan S Jaffe, Anne Sexter, Karen Schulz, Ranka Ler, Brittany Lindgren, Amy K Saenger, Sara A Love, Fred S Apple
OBJECTIVES: Our purpose was to determine a) overall and sex-specific 99th percentile upper reference limits (URL) and b) influences of statistical methods and comorbidities on the URLs. METHODS: Heparin plasma from 838 normal subjects (423 men, 415 women) were obtained from the AACC (Universal Sample Bank). The cobas e602 measured cTnT (Roche Gen 5 assay); limit of detection (LoD), 3ng/L. Hemoglobin A1c (URL 6.5%), NT-proBNP (URL 125ng/L) and eGFR (60mL/min/1.73m(2)) were measured, along with identification of statin use, to better define normality...
September 12, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28915701/comparison-among-fertility-sparing-therapies-for-well-differentiated-early-stage-endometrial-carcinoma-and-complex-atypical-hyperplasia
#9
REVIEW
Qing Zhang, Gonghua Qi, Margaux J Kanis, Ruifen Dong, Baoxia Cui, Xingsheng Yang, Beihua Kong
OBJECTIVE: To compare fertility-sparing therapies including oral progestogens, hysteroscopic resection (HR), and the levonorgestrel- releasing intrauterine system (LNG-IUS) in achieving disease regression, recurrence and live birth rate in well differentiate early-stage endometrial carcinoma (eEC) and complex atypical hyperplasia(CAH). STUDY DESIGN: This was a meta-analysis of previous studies focus on the fertility-sparing therapy for well differentiate early-stage endometrial carcinoma (eEC) and complex atypical hyperplasia (CAH)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915446/embracing-chemical-and-structural-diversity-with-uconga-a-universal-conformer-generation-and-analysis-program
#10
Nathaniel R Gunby, Sarah L Masters, Deborah L Crittenden
Molecular properties depend on molecular structure, so the first step in any computational chemistry investigation is to generate all thermally accessible conformers. Typically it is necessary to make a trade-off between the number of conformers to be explored and the accuracy of the method used to calculate their energies. Ab initio potential energy surface scans can, in principle, be applied to any molecule, but their conformational cost scales poorly with both molecular size and dimensionality of the search space...
September 6, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28915314/-1-h-mrs-processing-parameters-affect-metabolite-quantification-the-urgent-need-for-uniform-and-transparent-standardization
#11
Alex A Bhogal, Remmelt R Schür, Lotte C Houtepen, Bart van de Bank, Vincent O Boer, Anouk Marsman, Peter B Barker, Tom W J Scheenen, Jannie P Wijnen, Christiaan H Vinkers, Dennis W J Klomp
Proton magnetic resonance spectroscopy ((1) H-MRS) can be used to quantify in vivo metabolite levels, such as lactate, γ-aminobutyric acid (GABA) and glutamate (Glu). However, there are considerable analysis choices which can alter the accuracy or precision of (1) H-MRS metabolite quantification. It is currently unknown to what extent variations in the analysis pipeline used to quantify (1) H-MRS data affect outcomes. The purpose of this study was to evaluate whether the quantification of identical (1) H-MRS scans across independent and experienced research groups would yield comparable results...
September 15, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28911362/assessment-of-the-quality-of-anti-tuberculosis-medicines-in-almaty-kazakhstan-2014
#12
D Nabirova, G Schmid, R Yusupova, M Kantarbayeva, S I Ismailov, D Moffett, R W O Jähnke, J P Nuorti
SETTING: In 2009, the World Health Organization (WHO) conducted a survey of the quality of four anti-tuberculosis drugs in the former Soviet Union countries. Kazakhstan had the highest proportion of substandard drugs. OBJECTIVE: To assess the quality of anti-tuberculosis drugs used in Kazakhstan in 2014. DESIGN: Fourteen anti-tuberculosis drugs from the Almaty Interdistrict TB Dispensary were randomly selected and screened for quality using Global Pharma Health Fund Minilab™ testing...
October 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28911122/data-exploration-quality-control-and-statistical-analysis-of-chip-exo-nexus-experiments
#13
Rene Welch, Dongjun Chung, Jeffrey Grass, Robert Landick, Sündüz Keles
ChIP-exo/nexus experiments rely on innovative modifications of the commonly used ChIP-seq protocol for high resolution mapping of transcription factor binding sites. Although many aspects of the ChIP-exo data analysis are similar to those of ChIP-seq, these high throughput experiments pose a number of unique quality control and analysis challenges. We develop a novel statistical quality control pipeline and accompanying R/Bioconductor package, ChIPexoQual, to enable exploration and analysis of ChIP-exo and related experiments...
September 6, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28911103/prediction-of-genome-wide-dna-methylation-in-repetitive-elements
#14
Yinan Zheng, Brian T Joyce, Lei Liu, Zhou Zhang, Warren A Kibbe, Wei Zhang, Lifang Hou
DNA methylation in repetitive elements (RE) suppresses their mobility and maintains genomic stability, and decreases in it are frequently observed in tumor and/or surrogate tissues. Averaging methylation across RE in genome is widely used to quantify global methylation. However, methylation may vary in specific RE and play diverse roles in disease development, thus averaging methylation across RE may lose significant biological information. The ambiguous mapping of short reads by and high cost of current bisulfite sequencing platforms make them impractical for quantifying locus-specific RE methylation...
September 6, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28905409/generalized-survival-models-for-correlated-time-to-event-data
#15
Xing-Rong Liu, Yudi Pawitan, Mark S Clements
Our aim is to develop a rich and coherent framework for modeling correlated time-to-event data, including (1) survival regression models with different links and (2) flexible modeling for time-dependent and nonlinear effects with rich postestimation. We extend the class of generalized survival models, which expresses a transformed survival in terms of a linear predictor, by incorporating a shared frailty or random effects for correlated survival data. The proposed approach can include parametric or penalized smooth functions for time, time-dependent effects, nonlinear effects, and their interactions...
September 14, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28902990/high-purity-semiconducting-single-walled-carbon-nanotubes-a-key-enabling-material-in-emerging-electronics
#16
Jacques Lefebvre, Jianfu Ding, Zhao Li, Paul Finnie, Gregory Lopinski, Patrick R L Malenfant
Semiconducting single-walled carbon nanotubes (sc-SWCNTs) are emerging as a promising material for high-performance, high-density devices as well as low-cost, large-area macroelectronics produced via additive manufacturing methods such as roll-to-roll printing. Proof-of-concept demonstrations have indicated the potential of sc-SWCNTs for digital electronics, radiofrequency circuits, radiation hard memory, improved sensors, and flexible, stretchable, conformable electronics. Advances toward commercial applications bring numerous opportunities in SWCNT materials development and characterization as well as fabrication processes and printing technologies...
September 13, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28902922/molecular-clustering-of-patients-with-diabetes-and-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#17
Francles Blanco-Guillot, Guadalupe Delgado-Sánchez, Norma Mongua-Rodríguez, Pablo Cruz-Hervert, Leticia Ferreyra-Reyes, Elizabeth Ferreira-Guerrero, Mercedes Yanes-Lane, Rogelio Montero-Campos, Miriam Bobadilla-Del-Valle, Pedro Torres-González, Alfredo Ponce-de-León, José Sifuentes-Osornio, Lourdes Garcia-Garcia
INTRODUCTION: Many studies have explored the relationship between diabetes mellitus (DM) and tuberculosis (TB) demonstrating increased risk of TB among patients with DM and poor prognosis of patients suffering from the association of DM/TB. Owing to a paucity of studies addressing this question, it remains unclear whether patients with DM and TB are more likely than TB patients without DM to be grouped into molecular clusters defined according to the genotype of the infecting Mycobacterium tuberculosis bacillus...
2017: PloS One
https://www.readbyqxmd.com/read/28902852/genome-wide-chromatin-mapping-with-size-resolution-reveals-a-dynamic-sub-nucleosomal-landscape-in-arabidopsis
#18
Daniel Antony Pass, Emily Sornay, Angela Marchbank, Margaret R Crawford, Konrad Paszkiewicz, Nicholas A Kent, James A H Murray
All eukaryotic genomes are packaged as chromatin, with DNA interlaced with both regularly patterned nucleosomes and sub-nucleosomal-sized protein structures such as mobile and labile transcription factors (TF) and initiation complexes, together forming a dynamic chromatin landscape. Whilst details of nucleosome position in Arabidopsis have been previously analysed, there is less understanding of their relationship to more dynamic sub-nucleosomal particles (subNSPs) defined as protected regions shorter than the ~150bp typical of nucleosomes...
September 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28902600/contact-analysis-of-horizontal-cleavage-tear-treatment
#19
Carlos Uquillas, Sally Arno, Austin Ramme, Cheongeun Oh, Peter Walker, Robert Meislin
Horizontal cleavage tears (HCT) commonly occur in the posterior horn of the medial meniscus due to aging and degeneration. The purpose of this study was to investigate the surgical treatment of HCTs and their effect on dynamic tibiofemoral contact mechanics. The tibiofemoral contact mechanics of 10 cadaver knees were investigated using a custom dynamic loading apparatus, pressure sensor, and motion sensing camera. Three loading conditions were analyzed: 500 N compressive load, 500 N compressive load with 100 N posterior shear, and 500 N compressive load with 2...
May 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28902575/sample-size-planning-for-more-accurate-statistical-power-a-method-adjusting-sample-effect-sizes-for-publication-bias-and-uncertainty
#20
Samantha F Anderson, Ken Kelley, Scott E Maxwell
The sample size necessary to obtain a desired level of statistical power depends in part on the population value of the effect size, which is, by definition, unknown. A common approach to sample-size planning uses the sample effect size from a prior study as an estimate of the population value of the effect to be detected in the future study. Although this strategy is intuitively appealing, effect-size estimates, taken at face value, are typically not accurate estimates of the population effect size because of publication bias and uncertainty...
September 1, 2017: Psychological Science
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