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https://www.readbyqxmd.com/read/28434055/addressing-methodologic-challenges-and-minimizing-threats-to-validity-in-synthesizing-findings-from-individual-level-data-across-longitudinal-randomized-trials
#1
Ahnalee Brincks, Samantha Montag, George W Howe, Shi Huang, Juned Siddique, Soyeon Ahn, Irwin N Sandler, Hilda Pantin, C Hendricks Brown
Integrative Data Analysis (IDA) encompasses a collection of methods for data synthesis that pools participant-level data across multiple studies. Compared with single-study analyses, IDA provides larger sample sizes, better representation of participant characteristics, and often increased statistical power. Many of the methods currently available for IDA have focused on examining developmental changes using longitudinal observational studies employing different measures across time and study. However, IDA can also be useful in synthesizing across multiple randomized clinical trials to improve our understanding of the comprehensive effectiveness of interventions, as well as mediators and moderators of those effects...
April 22, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28434033/the-gut-microbiome-as-a-target-for-prevention-and-treatment-of-hyperglycaemia-in-type-2-diabetes-from-current-human-evidence-to-future-possibilities
#2
REVIEW
Louise Brunkwall, Marju Orho-Melander
The totality of microbial genomes in the gut exceeds the size of the human genome, having around 500-fold more genes that importantly complement our coding potential. Microbial genes are essential for key metabolic processes, such as the breakdown of indigestible dietary fibres to short-chain fatty acids, biosynthesis of amino acids and vitamins, and production of neurotransmitters and hormones. During the last decade, evidence has accumulated to support a role for gut microbiota (analysed from faecal samples) in glycaemic control and type 2 diabetes...
April 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28433947/maximum-likelihood-estimation-of-cardiac-fiber-bundle-orientation-from-arbitrarily-spaced-diffusion-weighted-images
#3
Andreas Nagler, Cristóbal Bertoglio, Christian T Stoeck, Sebastian Kozerke, Wolfgang A Wall
We propose an estimation scheme for local fiber bundle direction in the left ventricle directly from gray values of arbitrarily spaced cardiac diffusion weighted images (DWI). The approach is based on a parametric and space-dependent mathematical representation of the myocardial fiber bundle orientation and hence the diffusion tensor (DT) for the ventricular geometry. By solving a nonlinear inverse problem derived from a maximum likelihood estimator, the degrees of freedom of the fiber and DT model can be estimated from the measured gray values of the DWIs...
April 4, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28433790/a-strain-mediated-corrosion-model-for-bioabsorbable-metallic-stents
#4
E Galvin, D O'Brien, C Cummins, B J Mac Donald, C Lally
This paper presents a strain-mediated phenomenological corrosion model, based on the discrete finite element modelling method which was developed for use with the ANSYS Implicit finite element code. The corrosion model was calibrated from experimental data and used to simulate the corrosion performance of a WE43 magnesium alloy stent. The model was found to be capable of predicting the experimentally observed plastic strain-mediated mass loss profile. The non-linear plastic strain model, extrapolated from the experimental data, was also found to adequately capture the corrosion-induced reduction in the radial stiffness of the stent over time...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433751/elevated-chaperone-proteins-are-a-feature-of-winter-freeze-avoidance-by-larvae-of-the-goldenrod-gall-moth-epiblema-scudderiana
#5
Guijun Zhang, Janet M Storey, Kenneth B Storey
Winter survival for many insect species includes a need to maintain metabolic homeostasis and structural/functional integrity of macromolecules not only over a wide range of cold temperatures but also in response to rapid temperature change. Chaperones are well-known to protect/stabilize protein structure with regard to heat stress but less is known about their potential involvement in long-term protection of the proteome at subzero temperatures. The present study assessed the participation of chaperone proteins in the cold hardiness of larvae of the goldenrod gall moth, Epiblema scudderiana (Clemens) (Lepidoptera, Olethreutidae), monitoring changes in nine proteins over the winter months as well as their responses to laboratory cold acclimation or anoxia exposure...
April 19, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28433678/montreal-accord-on-patient-reported-outcomes-use-series-paper-4-patient-reported-outcomes-pro-can-inform-clinical-decision-making-in-chronic-care
#6
Clifton O Bingham, Vanessa Noonan, Claudine Auger, Debbie Feldman, Sara Ahmed, Susan J Bartlett
BACKGROUND: Providing patient-centered healthcare requires that patient needs, preferences, and valued outcomes are more fully integrated into all decisions. Patient reported outcome measures (PROs) provide unique information from the patient perspective on overall health, symptoms, burden, and treatment response. OBJECTIVE: We sought to describe applications of PROs in clinical settings and considerations for implementation from the perspectives of PRO researchers, clinicians, administrators, policy makers, and patients attending a multidisciplinary meeting...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433677/montreal-accord-on-patient-reported-outcomes-use-series-paper-9-anonymization-and-ethics-considerations-for-capturing-and-sharing-patient-reported-outcomes-pro
#7
L Arbuckle, E Moher, S J Bartlett, S Ahmed, K El Emam
BACKGROUND: Patient reported outcomes (PRO) are collected with consent for care, however using the data for any other purpose requires consent for that additional purpose, or the anonymization of the data. Collecting explicit consent to use this data for secondary purposes, before the patient completes a PRO, can also bias the responses. OBJECTIVE: We consider the ethical and security issues related to the collection of data at the point of care or in the population, and the aggregation and integration of PRO data with administrative databases to facilitate decision-making and comparative effectiveness research...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433675/montreal-accord-on-patient-reported-outcomes-use-series-paper-8-patient-reported-outcomes-pro-in-electronic-health-records-can-inform-clinical-and-policy-decisions
#8
S Ahmed, P Ware, W Gardner, J Witter, C O Bingham, D Khairy, S J Bartlett
BACKGROUND: Given that the goal of healthcare systems is to improve and maintain the health of the populations they serve, the indicators of performance must include outcomes that are meaningful to patients. The growth of health technologies provides an unprecedented opportunity to integrate the patient voice into clinical care by linking electronic health records (EHR) to patient-reported outcome (PRO) data collection. However, PRO data must be relevant, meaningful, and actionable for those who will have to invest the time and effort to collect it...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433643/green-light-for-lipid-fingerprinting
#9
Richard P Haslam, Ivo Feussner
The use of targeted lipidomic approaches for the analysis of plant lipids has steadily increased during recent years. We review recent developments of these methods and suggest the introduction of discovery lipidomics as additional approach through a new workflow, lipid fingerprinting, that integrates the advantages of shotgun lipidomics (quantitative data) with LC-MS-based strategies (higher resolution and/or coverage). This article is part of a Special Issue entitled:BBALIP_Lipidomics Opinion Articles edited by Sepp Kohlwein...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28433580/description-of-a-novel-multiplex-avidity-assay-for-evaluating-hpv-antibodies
#10
Allison M Brady, Elizabeth R Unger, Gitika Panicker
Limited data exists regarding antibody avidity for human papillomavirus (HPV). We describe development of a multiplex electrochemiluminescent avidity ELISA for four HPV types (HPV 6, 11, 16, 18) by adding a dissociating step to our established multiplex HPV VLP ELISA. Initial experiments exploring ammonium thiocyanate, sodium thiocyanate and guanidine hydrochloride (GuHCl) as dissociating agents identified GuHCl as most promising. Dissociation conditions with GuHCl were varied (concentration, incubation time, temperature) to select conditions with minimal impact on VLP integrity as measured with monoclonal antibodies to conformational epitopes...
April 19, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28433462/-health-and-access-to-health-care-of-18-25%C3%A2-years-old-people-not-in-employment-education-or-training-neets-attending-the-french-missions-locales
#11
S Robert, S Lesieur, J Chastang, V Kergoat, J Dutertre, P Chauvin
BACKGROUND: In France, "missions locales" are public assistance units for young people aged 16-25 years not in employment, education or training (NEET). The health status of the more than 1.5 million young adults attending these units annually is unknown. The purpose of this study was to describe the health status and health care use of this population in comparison with the general population of the same age. METHODS: The Presaje survey was conducted in 2011 on a randomized sample of 1453 young adults aged 18-25 years who attended five "missions locales" in mainland France...
April 19, 2017: Revue D'épidémiologie et de Santé Publique
https://www.readbyqxmd.com/read/28433414/diffusion-tensor-imaging-findings-and-cognitive-function-following-hospitalised-mixed-mechanism-mild-traumatic-brain-injury-a-systematic-review-and-meta-analysis
#12
REVIEW
Lucy Oehr, Jacqueline Anderson
OBJECTIVE: To undertake a systematic review and meta-analysis of the relationship between microstructural damage and cognitive function following hospitalised mixed-mechanism (HMM) mild traumatic brain injury (mTBI). DATA SOURCES: PsycInfo, Embase, and Medline were used to find relevant empirical papers published between January 2002 to January 2016. STUDY SELECTION: Studies that examined the specific relationship between diffusion tensor imaging (DTI) and cognitive test performance were included...
April 19, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28433411/metastatic-nasopharyngeal-carcinoma-patterns-of-care-and-survival-for-patients-receiving-chemotherapy-with-and-without-local-radiotherapy
#13
Chad G Rusthoven, Ryan M Lanning, Bernard L Jones, Arya Amini, Matthew Koshy, David J Sher, Daniel W Bowles, Jessica D McDermott, Antonio Jimeno, Sana D Karam
BACKGROUND AND PURPOSE: Radiotherapy (RT) to the primary nasopharyngeal tumor is frequently offered to patients with metastatic nasopharyngeal carcinoma (mNPC). However, only limited data exist to support RT in this setting. We used the National Cancer Database (NCDB) to evaluate outcomes for mNPC patients receiving chemotherapy with and without local RT. METHODS: The NCDB was queried for patients with mNPC with synchronous metastatic disease at diagnosis who received chemotherapy...
April 19, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28433250/public-private-implementation-of-integrated-emergency-response-services-case-study-of-gvk-emergency-management-and-research-institute-in-karnataka-india
#14
Veena M Sriram, Gopalkrishna Gururaj, Adnan A Hyder
BACKGROUND: Emergency medical services are important to the functioning of health systems, but these services tend to be neglected in low- and middle-income countries, such as India. In recent years, several models of pre-hospital emergency medical services have emerged in India. Research on these models holds important lessons for existing and future emergency medical service programs in low- and middle-income countries. Our objective was to provide a comprehensive description of the organizational structure and service delivery model of a public-private partnership in the southern Indian state of Karnataka, GVK Emergency Management and Research Institute, with a particular focus on its operations in Bengaluru...
April 19, 2017: Surgery
https://www.readbyqxmd.com/read/28433013/shape-resonances-virtual-state-and-ramsauer-townsend-minimum-in-the-low-energy-electron-collisions-with-benzene
#15
Alessandra Souza Barbosa, Márcio H F Bettega
In this work, we revisit the low-energy electron scattering by benzene. We employed the Schwinger multichannel method implemented with pseudopotentials to carry out systematic cross section calculations with different schemes of polarization for the resonant and the totally symmetric irreducible representations within the D2h symmetry group. We present integral and differential cross sections for incident electron energies up to 12 eV and discuss the shape resonances and the presence of a Ramsauer-Townsend minimum and a virtual state in the former...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28432939/the-association-of-psychiatric-comorbidity-with-treatment-completion-among-clients-admitted-to-substance-use-treatment-programs-in-a-u-s-national-sample
#16
Noa Krawczyk, Kenneth A Feder, Brendan Saloner, Rosa M Crum, Marc Kealhofer, Ramin Mojtabai
BACKGROUND: Psychiatric disorders are highly comorbid with substance use disorders and play an important role in their course and recovery. However, the impact of comorbidity on treatment outcomes has not been examined in a U.S. national sample. This study explores the impact of psychiatric comorbidity on treatment completion among individuals admitted to publicly funded substance use treatment facilities across the United States. METHODS: Using data on first-time treatment episodes in the U...
April 19, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28432659/current-role-of-blood-and-urine-biomarkers-in-the-clinical-care-of-adults-with-congenital-heart-disease
#17
REVIEW
Saurabh Rajpal, Laith Alshawabkeh, Alexander R Opotowsky
PURPOSE OF REVIEW: There is an increasing number of adult patients with congenital heart disease (CHD). While several biomarkers have been validated and integrated into general cardiology clinical practice, these tests are often applied to adults with CHD in the absence of disease-specific validation. Although these patients are often grouped into a single population, there is heterogeneous pathophysiology, variable disease chronicity, extensive multisystem involvement, and a low event rate relative to acquired heart disease...
June 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28432624/delivering-environmental-benefit-from-the-use-of-environmental-quality-standards-why-we-need-to-focus-on-implementation
#18
Graham Merrington, Adam Peters, Paul Whitehouse, Robin Clarke, Dan Merckel
The UK has adopted a broader approach to the introduction of Environmental Quality Standard (EQS) for the aquatic environment than many other jurisdictions around the world, with a greater focus on the implementation of scientifically derived standards. This follows the publication of a report by the Royal Commission on Environmental Pollution in 1998 which drew attention to the need to recognise that whilst an EQS is often just viewed as a numerical value, it also has other important characteristics that need to be recognised if it is to be a practical and effective regulatory tool...
April 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28432353/severe-hearing-loss-and-outer-hair-cell-death-in-homozygous-foxo3-knockout-mice-after-moderate-noise-exposure
#19
Felicia Gilels, Stephen T Paquette, Holly J Beaulac, Anwen Bullen, Patricia M White
Noise induced hearing loss (NIHL) is a disease that affects millions of Americans. Identifying genetic pathways that influence recovery from noise exposure is an important step forward in understanding NIHL. The transcription factor Foxo3 integrates the cellular response to oxidative stress and plays a role in extending lifespan in many organisms, including humans. Here we show that Foxo3 is required for auditory function after noise exposure in a mouse model system, measured by ABR. Absent Foxo3, outer hair cells are lost throughout the middle and higher frequencies...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28432308/network-aided-bi-clustering-for-discovering-cancer-subtypes
#20
Guoxian Yu, Xianxue Yu, Jun Wang
Bi-clustering is a widely used data mining technique for analyzing gene expression data. It simultaneously groups genes and samples of an input gene expression data matrix to discover bi-clusters that relevant samples exhibit similar gene expression profiles over a subset of genes. The discovered bi-clusters bring insights for categorization of cancer subtypes, gene treatments and others. Most existing bi-clustering approaches can only enumerate bi-clusters with constant values. Gene interaction networks can help to understand the pattern of cancer subtypes, but they are rarely integrated with gene expression data for exploring cancer subtypes...
April 21, 2017: Scientific Reports
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