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https://www.readbyqxmd.com/read/28708092/the-exact-nuclear-overhauser-enhancement-recent-advances
#1
REVIEW
Parker J Nichols, Alexandra Born, Morkos A Henen, Dean Strotz, Julien Orts, Simon Olsson, Peter Güntert, Celestine N Chi, Beat Vögeli
Although often depicted as rigid structures, proteins are highly dynamic systems, whose motions are essential to their functions. Despite this, it is difficult to investigate protein dynamics due to the rapid timescale at which they sample their conformational space, leading most NMR-determined structures to represent only an averaged snapshot of the dynamic picture. While NMR relaxation measurements can help to determine local dynamics, it is difficult to detect translational or concerted motion, and only recently have significant advances been made to make it possible to acquire a more holistic representation of the dynamics and structural landscapes of proteins...
July 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28528970/the-many-faces-of-compartmentalized-pka-signalosomes
#2
REVIEW
Omar Torres-Quesada, Johanna E Mayrhofer, Eduard Stefan
Cellular signal transmission requires the dynamic formation of spatiotemporally controlled molecular interactions. At the cell surface information is received by receptor complexes and relayed through intracellular signaling platforms which organize the actions of functionally interacting signaling enzymes and substrates. The list of hormone or neurotransmitter pathways that utilize the ubiquitous cAMP-sensing protein kinase A (PKA) system is expansive. This requires that the specificity, duration, and intensity of PKA responses are spatially and temporally restricted...
May 18, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28487061/the-spectrum-of-ambulatory-electrocardiographic-monitoring
#3
REVIEW
Harry G Mond
Since its introduction as a clinical investigative tool, the 12-lead electrocardiograph (ECG) has been the gold standard for recognition of cardiac arrhythmias. The resting 12-lead ECG, however, gives only a rhythm snapshot in time, whereas arrhythmias maybe short-lived, paroxysmal and even asymptomatic making documentation in many patients very difficult. To overcome this, ambulatory ECG monitoring has been developed as a means of recording the ECG in patients over a set period of time, whether it be short-, medium- or long-term...
April 13, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28453916/digital-technology-and-clinical-decision-making-in-depression-treatment-current-findings-and-future-opportunities
#4
REVIEW
Kevin A Hallgren, Amy M Bauer, David C Atkins
Clinical decision making encompasses a broad set of processes that contribute to the effectiveness of depression treatments. There is emerging interest in using digital technologies to support effective and efficient clinical decision making. In this paper, we provide "snapshots" of research and current directions on ways that digital technologies can support clinical decision making in depression treatment. Practical facets of clinical decision making are reviewed, then research, design, and implementation opportunities where technology can potentially enhance clinical decision making are outlined...
April 28, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28410462/health-service-provision-for-people-with-epilepsy-in-sub-saharan-africa-a-situational-review
#5
REVIEW
Musa M Watila, Mark R Keezer, Samuel A Angwafor, Andrea S Winkler, Josemir W Sander
BACKGROUND: Epilepsy is a public health issue in sub-Saharan Africa (SSA) where many people with the condition receive no treatment. Health-care services for epilepsy in this region have not been comprehensively assessed. We examined key features of epilepsy health services provided in SSA. METHODOLOGY: This was a scoping review conducted using pre-specified protocols. We implemented an electronic search strategy to identify relevant citations using PUBMED, EMBASE, Web of Science, Scopus, Cumulative Index to Nursing and Allied Health Literature (CINAHL), African Index Medicus (AIM), Open Grey, Cochrane database, and Google Scholar...
May 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28390673/diagnostic-performance-of-256-row-detector-coronary-ct-angiography-in-patients-with-high-heart-rates-within-a-single-cardiac-cycle-a%C3%A2-preliminary-study
#6
J Liang, H Wang, L Xu, L Yang, L Dong, Z Fan, R Wang, Z Sun
AIM: To evaluate the image quality and diagnostic performance of coronary computed tomography angiography (CCTA) in patients with high heart rate within a single cardiac cycle using a 256-row detector CT system. MATERIALS AND METHODS: Eighty-four consecutive symptomatic patients (mean age 60.4±9.1 years, 52 men) with suspected coronary artery disease and heart rate ≥75 beats/min undergoing CCTA and invasive coronary angiography (ICA) were enrolled retrospectively...
August 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28355471/moving-from-static-to-dynamic-models-of-the-onset-of-mental-disorder-a-review
#7
REVIEW
Barnaby Nelson, Patrick D McGorry, Marieke Wichers, Johanna T W Wigman, Jessica A Hartmann
Importance: In recent years, there has been increased focus on subthreshold stages of mental disorders, with attempts to model and predict which individuals will progress to full-threshold disorder. Given this research attention and the clinical significance of the issue, this article analyzes the assumptions of the theoretical models in the field. Observations: Psychiatric research into predicting the onset of mental disorder has shown an overreliance on one-off sampling of cross-sectional data (ie, a snapshot of clinical state and other risk markers) and may benefit from taking dynamic changes into account in predictive modeling...
May 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28324673/a-framework-to-guide-the-assessment-of-human-machine-systems
#8
Kimberly Stowers, James Oglesby, Shirley Sonesh, Kevin Leyva, Chelsea Iwig, Eduardo Salas
OBJECTIVE: We have developed a framework for guiding measurement in human-machine systems. BACKGROUND: The assessment of safety and performance in human-machine systems often relies on direct measurement, such as tracking reaction time and accidents. However, safety and performance emerge from the combination of several variables. The assessment of precursors to safety and performance are thus an important part of predicting and improving outcomes in human-machine systems...
March 2017: Human Factors
https://www.readbyqxmd.com/read/28304297/information-and-communication-technologies-for-the-activities-of-daily-living-in-older-patients-with-dementia-a-systematic-review
#9
Grazia D'Onofrio, Daniele Sancarlo, Francesco Ricciardi, Francesco Panza, Davide Seripa, Filippo Cavallo, Francesco Giuliani, Antonio Greco
BACKGROUND: Significant innovations have been introduced in recent years in the application of information and communication technologies (ICTs) to support healthcare for patients with dementia. OBJECTIVE: In the present systematic review, our goal is to keep track of ICT concepts and approaches to support the range of activities of daily living for people with dementia and to provide a snapshot of the effect that technology is having on patients' self-reliance...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28280819/microchip-based-single-cell-functional-proteomics-for-biomedical-applications
#10
REVIEW
Yao Lu, Liu Yang, Wei Wei, Qihui Shi
Cellular heterogeneity has been widely recognized but only recently have single cell tools become available that allow characterizing heterogeneity at the genomic and proteomic levels. We review the technological advances in microchip-based toolkits for single-cell functional proteomics. Each of these tools has distinct advantages and limitations, and a few have advanced toward being applied to address biological or clinical problems that traditional population-based methods fail to address. High-throughput single-cell proteomic assays generate high-dimensional data sets that contain new information and thus require developing new analytical frameworks to extract new biology...
March 29, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28276544/advanced-optoacoustic-methods-for-multiscale-imaging-of-in-vivo-dynamics
#11
REVIEW
X L Deán-Ben, S Gottschalk, B Mc Larney, S Shoham, D Razansky
Visualization of dynamic functional and molecular events in an unperturbed in vivo environment is essential for understanding the complex biology of living organisms and of disease state and progression. To this end, optoacoustic (photoacoustic) sensing and imaging have demonstrated the exclusive capacity to maintain excellent optical contrast and high resolution in deep-tissue observations, far beyond the penetration limits of modern microscopy. Yet, the time domain is paramount for the observation and study of complex biological interactions that may be invisible in single snapshots of living systems...
April 18, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28275251/peer-reviewed-public-health-journals-from-arabic-speaking-countries-an-updated-snapshot
#12
Basil H Aboul-Enein, Joshua Bernstein, Jacquelyn E Bowser
There is a positive association between availability of regional peer-reviewed public health information systems and progressive change in community and population health. The objective of this brief report was to identify public health journals in Arabic-speaking countries actively publishing as of 2016. We conducted an electronic search in several electronic database records for public health journals using a combination of search terms. We excluded journals that focused on human medicine, veterinary medicine, nursing, and other discipline-specific or clinical health professions...
February 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28257031/portal-vein-embolization-impact-of-chemotherapy-and-genetic-mutations
#13
Amy R Deipolyi, Yu Shrike Zhang, Ali Khademhosseini, Sailendra Naidu, Mitesh Borad, Burcu Sahin, Amit K Mathur, Rahmi Oklu
We characterized the effect of systemic therapy given after portal vein embolization (PVE) and before hepatectomy on hepatic tumor and functional liver remnant (FLR) volumes. All 76 patients who underwent right PVE from 2002-2016 were retrospectively studied. Etiologies included colorectal cancer (n = 44), hepatocellular carcinoma (n = 17), cholangiocarcinoma (n = 10), and other metastases (n = 5). Imaging before and after PVE was assessed. Chart review revealed systemic therapy administration, SNaPshot genetic profiling, and comorbidities...
March 1, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28225448/predicting-hcahps-scores-from-hospitals-social-media-pages-a-sentiment-analysis
#14
John W Huppertz, Peter Otto
BACKGROUND: Social media is an important communication channel that can help hospitals and consumers obtain feedback about quality of care. However, despite the potential value of insight from consumers who post comments about hospital care on social media, there has been little empirical research on the relationship between patients' anecdotal feedback and formal measures of patient experience. PURPOSE: The aim of the study was to test the association between informal feedback posted in the Reviews section of hospitals' Facebook pages and scores on two global items from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey, Overall Hospital Rating and Willingness to Recommend the Hospital...
February 22, 2017: Health Care Management Review
https://www.readbyqxmd.com/read/28212972/variation-in-health-technology-assessment-and-reimbursement-processes-in-europe
#15
Ronald L Akehurst, Eric Abadie, Noël Renaudin, François Sarkozy
BACKGROUND: It has been suggested that differences in health technology assessment (HTA) processes among countries, particularly within Europe, have led to inequity in patient access to new medicines. OBJECTIVES: To provide an up-to-date snapshot analysis of the present status of HTA and reimbursement systems in select European countries, and to investigate the implications of these processes, especially with regard to delays in market and patient access. METHODS: HTA and reimbursement processes were assessed through a review of published and gray literature, and through a series of interviews with HTA experts...
January 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28173627/genetic-architecture-and-balancing-selection-the-life-and-death-of-differentiated-variants
#16
REVIEW
Violaine Llaurens, Annabel Whibley, Mathieu Joron
Balancing selection describes any form of natural selection, which results in the persistence of multiple variants of a trait at intermediate frequencies within populations. By offering up a snapshot of multiple co-occurring functional variants and their interactions, systems under balancing selection can reveal the evolutionary mechanisms favouring the emergence and persistence of adaptive variation in natural populations. We here focus on the mechanisms by which several functional variants for a given trait can arise, a process typically requiring multiple epistatic mutations...
May 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28119267/forensic-snp-genotyping-with-snapshot-technical-considerations-for-the-development-and-optimization-of-multiplexed-snp-assays
#17
REVIEW
M Fondevila, C Børsting, C Phillips, M de la Puente, Euroforen-NoE Consortium, A Carracedo, N Morling, M V Lareu
This review explores the key factors that influence the optimization, routine use, and profile interpretation of the SNaPshot single-base extension (SBE) system applied to forensic single-nucleotide polymorphism (SNP) genotyping. Despite being a mainly complimentary DNA genotyping technique to routine STR profiling, use of SNaPshot is an important part of the development of SNP sets for a wide range of forensic applications with these markers, from genotyping highly degraded DNA with very short amplicons to the introduction of SNPs to ascertain the ancestry and physical characteristics of an unidentified contact trace donor...
January 2017: Forensic Science Review
https://www.readbyqxmd.com/read/28078793/insights-into-nuclear-dynamics-using-live-cell-imaging-approaches
#18
REVIEW
Rachel B Bigley, Alexander Y Payumo, Jeffrey M Alexander, Guo N Huang
The nucleus contains the genetic blueprint of the cell and myriad interactions within this subcellular structure are required for gene regulation. In the current scientific era, characterization of these gene regulatory networks through biochemical techniques coupled with systems-wide 'omic' approaches has become commonplace. However, these strategies are limited because they represent a mere snapshot of the cellular state. To obtain a holistic understanding of nuclear dynamics, relevant molecules must be studied in their native contexts in living systems...
March 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/27940518/radial-spokes-a-snapshot-of-the-motility-regulation-assembly-and-evolution-of-cilia-and-flagella
#19
Xiaoyan Zhu, Yi Liu, Pinfen Yang
Propulsive forces generated by cilia and flagella are used in events that are critical for the thriving of diverse eukaryotic organisms in their environments. Despite distinctive strokes and regulations, the majority of them adopt the 9+2 axoneme that is believed to exist in the last eukaryotic common ancestor. Only a few outliers have opted for a simpler format that forsakes the signature radial spokes and the central pair apparatus, although both are unnecessary for force generation or rhythmicity. Extensive evidence has shown that they operate as an integral system for motility control...
December 9, 2016: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/27782430/perspective-kohn-sham-density-functional-theory-descending-a-staircase
#20
Haoyu S Yu, Shaohong L Li, Donald G Truhlar
This article presents a perspective on Kohn-Sham density functional theory (KS-DFT) for electronic structure calculations in chemical physics. This theory is in widespread use for applications to both molecules and solids. We pay special attention to several aspects where there are both concerns and progress toward solutions. These include: 1. The treatment of open-shell and inherently multiconfigurational systems (the latter are often called multireference systems and are variously classified as having strong correlation, near-degeneracy correlation, or high static correlation; KS-DFT must treat these systems with broken-symmetry determinants)...
October 7, 2016: Journal of Chemical Physics
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