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Paul C Cremer, Yuping Wu, Haitham M Ahmed, Lee M Pierson, Danielle M Brennan, Mouaz H Al-Mallah, Clinton A Brawner, Jonathan K Ehrman, Steven J Keteyian, Roger S Blumenthal, Michael J Blaha, Leslie Cho
Importance: Risk assessment tools for exercise treadmill testing may have limited external validity. Cardiovascular mortality has decreased in recent decades, and women have been underrepresented in prior cohorts. Objectives: To determine whether exercise and clinical variables are associated with differential mortality outcomes in men and women and to assess whether sex-specific risk scores better estimate all-cause mortality. Design, Setting, and Participants: This retrospective cohort study included 59 877 patients seen at the Cleveland Clinic Foundation (CCF cohort) from January 1, 2000, through December 31, 2010, and 49 278 patients seen at the Henry Ford Hospital (FIT cohort) from January 1, 1991, through December 31, 2009...
October 26, 2016: JAMA Cardiology
Jarrod D Frizzell, Li Liang, Phillip J Schulte, Clyde W Yancy, Paul A Heidenreich, Adrian F Hernandez, Deepak L Bhatt, Gregg C Fonarow, Warren K Laskey
Importance: Several attempts have been made at developing models to predict 30-day readmissions in patients with heart failure, but none have sufficient discriminatory capacity for clinical use. Machine-learning (ML) algorithms represent a novel approach and may have potential advantages over traditional statistical modeling. Objective: To develop models using a ML approach to predict all-cause readmissions 30 days after discharge from a heart failure hospitalization and to compare ML model performance with models developed using "conventional" statistically based methods...
October 26, 2016: JAMA Cardiology
Paolo Fusar-Poli, Grazia Rutigliano, Daniel Stahl, André Schmidt, Valentina Ramella-Cravaro, Shetty Hitesh, Philip McGuire
Importance: Pretest risk estimation is routinely used in clinical medicine to inform further diagnostic testing in individuals with suspected diseases. To our knowledge, the overall characteristics and specific determinants of pretest risk of psychosis onset in individuals undergoing clinical high risk (CHR) assessment are unknown. Objectives: To investigate the characteristics and determinants of pretest risk of psychosis onset in individuals undergoing CHR assessment and to develop and externally validate a pretest risk stratification model...
October 26, 2016: JAMA Psychiatry
Stephanie DeAnda, Laura Bosch, Diane Poulin-Dubois, Pascal Zesiger, Margaret Friend
Purpose: The aim of this study was to develop the Language Exposure Assessment Tool (LEAT) and to examine its cross-linguistic validity, reliability, and utility. The LEAT is a computerized interview-style assessment that requests parents to estimate language exposure. The LEAT yields an automatic calculation of relative language exposure and captures qualitative aspects of early language experience. Method: Relative language exposure as reported on the LEAT and vocabulary size at 17 months of age were measured in a group of bilingual language learners with varying levels of exposure to French and English or Spanish and English...
October 25, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Wei Tang, Zhijun Liao, Quan Zou
MicroRNAs(miRNAs) often exert their oncogenic and tumor suppressor functions by suppressing protein-coding genes expressions in cancers and thus have a strong association with cancers' generation, development and metastasis. Through comprehensively understanding differentially expressed miRNAs (oncomiRNA) in tumor tissues, we can elucidate the underlying molecular mechanisms in tumorigenesis and develop novel strategies for cancer diagnosis and treatment. The differential expression of miRNAs can now be analyzed through numerous statistical significance tests based on different principles, which are also available in various R packages...
October 23, 2016: Oncotarget
Shuiqing Zhou, Changchuan Guo, Feng Shi, Wei Jiang, Lei Wang
In this work, the ultrahigh-performance liquid chromatography quadrupole orbitrap high resolution mass spectrometry (UHPLC-Q-Orbitrap HRMS) was applied to the rapid screening, identification and quantification of the illegal adulterated glucocorticoids in herbal medicines. The mass spectrometer was operated in positive ion mode and Full MS/dd-MS(2) (data-dependent MS(2)) mode, where selected ions were subjected to a dd-MS(2) scan with given fragmentation energy following a Full MS scan. The application of 70 000 FWHM mass resolution and narrow mass windows (5ppm) effectively improve the selectivity of the method, and a single injection was sufficient to perform the simultaneous screening and identification/quantification of 14 glucocorticoids in 15min...
October 11, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Justin T Clapp, Jody A Roberts, Britt Dahlberg, Lee Sullivan Berry, Lisa M Jacobs, Edward A Emmett, Frances K Barg
Research on community responses to environmental toxicity has richly described the struggles of citizens to identify unrecognized toxins, collect their own environmental health facts, and use them to lobby authorities for recognition and remediation. Much of this literature is based on an empiricist premise: it is concerned with exploring differences in how laypeople and experts perceive what is presumed to be a singular toxic reality that preexists these varying perspectives. Here, we seek to reexamine this topic by shifting the focus from facts to facticity-that is, by exploring the many types of knowledge that communities develop about toxicity and how these knowledges articulate with the ideas of scientific and governmental authorities about what kinds of information are valid bases for policymaking...
October 20, 2016: Social Science & Medicine
Sainan Cheng, Hongyue Wang, Minjie Lu, Chen Cui, Lu Li, Gang Yin, Shihua Zhao
No abstract text is available yet for this article.
October 18, 2016: International Journal of Cardiology
Judd F Hultquist, Kathrin Schumann, Jonathan M Woo, Lara Manganaro, Michael J McGregor, Jennifer Doudna, Viviana Simon, Nevan J Krogan, Alexander Marson
New genetic tools are needed to understand the functional interactions between HIV and human host factors in primary cells. We recently developed a method to edit the genome of primary CD4(+) T cells by electroporation of CRISPR/Cas9 ribonucleoproteins (RNPs). Here, we adapted this methodology to a high-throughput platform for the efficient, arrayed editing of candidate host factors. CXCR4 or CCR5 knockout cells generated with this method are resistant to HIV infection in a tropism-dependent manner, whereas knockout of LEDGF or TNPO3 results in a tropism-independent reduction in infection...
October 25, 2016: Cell Reports
Solimar Figueroa, Julie Gardner, Jose Irizarry, Tanya Cohn
BACKGROUND: The transition to practice for new graduate nurses poses distinct challenges at the point of care. The complicated work environment necessitates a preceptorship model that maintains safety at all times. METHOD: This study used survey, focus groups, and interviews to assess the effects of the married state preceptorship model (MSPM) on the experiences and perceptions of the new nurses and preceptors in a hospital setting. RESULTS: The result validated the original findings from the new nurses' survey, indicating all (N = 28, 100%) of the new nurses found the MSPM to be beneficial, promote safety, and lessen anxiety, and 27 (96%) thought it helped them to assume a full patient load...
November 1, 2016: Journal of Continuing Education in Nursing
Joy Longo, Linda Cassidy, Rose Sherman
: HOW TO OBTAIN CONTACT HOURS BY READING THIS ISSUE Instructions: 1.2 contact hours will be awarded by Villanova University College of Nursing upon successful completion of this activity. A contact hour is a unit of measurement that denotes 60 minutes of an organized learning activity. This is a learner-based activity. Villanova University College of Nursing does not require submission of your answers to the quiz. A contact hour certificate will be awarded after you register, pay the registration fee, and complete the evaluation form online at http://goo...
November 1, 2016: Journal of Continuing Education in Nursing
E L Andrade, A F Bento, J Cavalli, S K Oliveira, C S Freitas, R Marcon, R C Schwanke, J M Siqueira, J B Calixto
This review presents a historical overview of drug discovery and the non-clinical stages of the drug development process, from initial target identification and validation, through in silico assays and high throughput screening (HTS), identification of leader molecules and their optimization, the selection of a candidate substance for clinical development, and the use of animal models during the early studies of proof-of-concept (or principle). This report also discusses the relevance of validated and predictive animal models selection, as well as the correct use of animal tests concerning the experimental design, execution and interpretation, which affect the reproducibility, quality and reliability of non-clinical studies necessary to translate to and support clinical studies...
October 24, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Éverton Luís Pereira, Livia Barbosa
This article derives from a study conducted on the validation of the Brazilian Functionality Index (IF-BrA) applied to the granting of retirement benefits to disabled persons. The retirement of persons with disabilities is regulated by Complementary Law 142 of May 8, 2013. The aim is to discuss how the individuals involved in application of the instrument perceive the concept of disability and the possible implications for ensuring the right to retirement. Eleven agencies of the National Social Security Institute (INSS) were visited and 16 physicians, 16 social workers and 40 persons with disabilities were interviewed...
October 2016: Ciência & Saúde Coletiva
Gabriela Lisieux Lima Gomes, Maria das Graças Melo Fernandes, Maria Miriam Lima da Nóbrega
Objective: to analyze the concept "hospitalization anxiety in children", identifying its antecedents, attributes, and consequences, with the objective of clarifying its meaning. Method: we used a conceptual analysis model, whose objective is to clarify the meaning of terms. Results: we identified the concept antecedents and its attributes, classified as biological and psychological needs, which are essential characteristics of "hospitalization anxiety in children"...
September 2016: Revista Brasileira de Enfermagem
Maria Manuela Ferreira Pereira da Silva Martins, Maria Narcisa da Costa Gonçalves, Olga Maria Pimenta Lopes Ribeiro, Daisy Maria Rizatto Tronchin
Objectives: to describe the development and validation process of a scale to measure the nurses' perception of the activities that contribute to nursing care quality. Method: methodological study based on a literature review, the opinion of experts and the experience of study investigators. An instrument was designed containing six dimensions and 25 items, applied as a questionnaire to 775 nurses from a hospital in northern Portugal, from May to July 2014. The instrument validation used an exploratory factor analysis and an internal consistency assessment of each factor/dimension...
September 2016: Revista Brasileira de Enfermagem
Ana Paula Morais de Carvalho Macedo, Clara Maria Faria Simães Mendes, Analisa Lia Silva Candeias, Marco Paulo Rodrigues Sousa, Louíse Viecili Hoffmeister, Maria Isabel Gomes Sousa Lage
Objective: to describe the process of adaptation and validation of the Nursing Activities Score to the Portuguese context. Method: this was a pilot study of adaptation and validation of the Nursing Activities Score with a sample consisting of 67 patients hospitalized in the intensive care units of three Portuguese hospitals. The construct validity was assessed through factor analysis procedures and the internal consistency of the items was measured through the Cronbach's alpha coefficient...
September 2016: Revista Brasileira de Enfermagem
Flávia Paula Magalhães Monteiro, Thelma Leite de Araujo, Francisca Bertilia Chaves Costa, Telma Alteniza Leandro, Tahissa Frota Cavalcante, Marcos Venícios de Oliveira Lopes
Objective: to conduct the clinical validation of nursing diagnosis "Willingness for improved infant development". Method: a cross-sectional study, conducted in a Centro de Saúde da Família (Family Health Care center), with 45 healthy breastfed infants. The instrument for collecting the data was prepared based on the literature and validated by nurses. It contained the following variables: sociodemographic, gestational, and obstetrical variables; breastfed infant's nutritional profile; evaluation of the defining characteristics of the proposed nursing diagnosis...
September 2016: Revista Brasileira de Enfermagem
Ja Min Byun, Hea-Lim Kim, Dong-Yeop Shin, Youngil Koh, Sung-Soo Yoon, Moon-Woo Seong, Sung Sup Park, Jin Hee Kim, Yun-Gyoo Lee, Inho Kim
Pharmacogenomics can explain the inter-individual differences in response to drugs, including methotrexate (MTX) used for acute graft-versus-host disease (aGVHD) prophylaxis during hematopoietic stem cell transplantation (HSCT). In real-world practice, preplanned MTX dose is arbitrarily modified according to observed toxicity which can lead to unexpected and severe aGVHD development. We aimed to validate the influence of MTHFR C677T polymorphism on the outcomes of allogenic HSCT in a relatively under-represented homogenous Asian population...
2016: PloS One
Jafar Sadegh Tabrizi, Homayoun Sadeghi-Bazargani, Mostafa Farahbakhsh, Leila Nikniaz, Zeinab Nikniaz
BACKGROUND: This population-based study aimed at investigating the prevalence and associated factors of prehypertension/hypertension in Iran. METHODS AND FINDINGS: The data (n = 2818) for this study were collected in 2015 as a part of the major Lifestyle Promotion Project (LPP) conducted in East Azerbaijan (urban and regional parts). The data for socio-demographic status, dietary information, and physical activity and anxiety levels were collected through validated questionnaires...
2016: PloS One
Jean-Daniel Dubois, Vincent Cantin, Mathieu Piché, Martin Descarreaux
Despite an elusive pathophysiology, common characteristics are often observed in individuals with chronic low back pain (LBP). These include psychological symptoms, altered pain perception, altered pain modulation and altered muscle activation. These factors have been explored as possible determinants of disability, either separately or in cross-sectional studies, but were never assessed in a single longitudinal study. Therefore, the objective was to determine the relative contribution of psychological and neurophysiological factors to future disability in individuals with past LBP...
2016: PloS One
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