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https://www.readbyqxmd.com/read/29458235/altered-cortical-development-in-fetuses-with-isolated-non-severe-ventriculomegaly-assessed-by-neurosonography
#1
Nadine Hahner, Bienvenido Puerto, Miriam Perez-Cruz, Catarina Policiano, Elena Monterde, Fatima Crispi, Eduard Gratacos, Elisenda Eixarch
OBJECTIVES: To perform a comprehensive assessment of cortical development in fetuses with isolated non-severe ventriculomegaly (INSVM) by neurosonography. METHODS: We prospectively included 40 fetuses with INSVM and 40 controls. INSVM was defined as atrial width between 10.0 and 14.9mm without associated malformation, infection or chromosomal abnormality. Cortical development was assessed by neurosonography at 26 and 30 weeks of gestation measuring depth of selected sulci and applying a maturation scale from 0 (no appearance) to 5 (maximally developed) of main sulci and areas...
February 19, 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29458203/precision-pharmacology-for-alzheimer-s-disease
#2
REVIEW
Harald Hampel, Andrea Vergallo, Lisi Flores Aguilar, Norbert Benda, Karl Broich, A Claudio Cuello, Jeffrey Cummings, Bruno Dubois, Howard J Federoff, Massimo Fiandaca, Remy Genthon, Marion Haberkamp, Eric Karran, Mark Mapstone, George Perry, Lon S Schneider, Lindsay A Welikovitch, Janet Woodcock, Filippo Baldacci, Simone Lista
The complex multifactorial nature of polygenic Alzheimer's disease (AD) presents significant challenges for drug development. AD pathophysiology is progressing in a non-linear dynamic fashion across multiple systems levels - from molecules to organ systems - and through adaptation, to compensation, and decompensation to systems failure. Adaptation and compensation maintain homeostasis: a dynamic equilibrium resulting from the dynamic non-linear interaction between genome, epigenome, and environment. An individual vulnerability to stressors exists on the basis of individual triggers, drivers, and thresholds accounting for the initiation and failure of adaptive and compensatory responses...
February 16, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29458201/computer-assisted-surgery-in-acetabular-fractures-virtual-reduction-of-acetabular-fracture-using-the-first-patient-specific-biomechanical-model-simulator
#3
M Boudissa, H Oliveri, M Chabanas, J Tonetti
Preoperative planning for the management of acetabular fracture is founded on geometric models allowing virtual repositioning of the bone fragments, but not taking account of soft tissue and the realities of the surgical procedure. The present technical note reports results using the first simulator to be based on a patient-specific biomechanical model, simulating the action of forces on the fragments and also the interactions between soft issue and bone: muscles, capsules, ligaments, and bone contacts. In all 14 cases, biomechanical simulation faithfully reproduced the intraoperative behavior of the various bone fragments and reduction quality...
February 16, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29458183/age-dependent-attitudes-of-ischemic-patients-towards-disability-after-decompressive-hemicraniectomy-for-malignant-middle-cerebral-artery-infarction
#4
Byoung-Joon Kim, Yeon Ran Hong, Youngmin Han, Yang-Ha Hwang, Boram Ohk, Jaechan Park
OBJECTIVE: To improve the process of surgical informed consent, patient attitudes towards acceptable levels of disability after decompressive surgery for malignant middle cerebral artery infarction are investigated, including the impact of patient age. METHODS: Patients who had experienced a recent minor stroke were asked to complete a questionnaire comprised of 2 parts: 1) demographic information, including patient age, gender, years of education, working status, religion, and economic status and 2) acceptable level of disability based on a modified Rankin Scale (mRS) with corresponding illustrations to explain the mRS levels...
February 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29457969/an-evaluation-of-the-operational-model-when-applied-to-quantify-functional-selectivity
#5
Xiao Zhu, David B Finlay, Michelle Glass, Stephen B Duffull
BACKGROUND AND PURPOSE: Functional selectivity describes the ability of ligands to differentially regulate multiple signalling pathways when coupled to a single receptor and the operational model is commonly used to analyse these data. Here, we assess the mathematical properties of the operational model and evaluate the impact of fixing parameters on model performance. EXPERIMENTAL APPROACH: The operational model was evaluated using both a mathematical identifiability analysis and simulation...
February 19, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29457923/flipping-social-determinants-on-its-head-medical-student-perspectives-on-the-flipped-classroom-and-simulated-patients-to-teach-social-determinants-of-health
#6
N Gostelow, J Barber, F Gishen, A Berlin
BACKGROUND: Inequalities in healthcare are increasing. Engaging medical students to tackle this urgent challenge alongside clinical sciences can be demanding. This study examines medical student perceptions of a flipped approach to health inequalities co-designed by faculty and sixth-year students. INNOVATION: A flipped learning session was piloted for year 4 medical students combining an online lesson followed by a tutorial with a simulated patient. METHODS: A mixed-methods approach collected questionnaire data using 4-point Likert scales and free text answers...
February 19, 2018: Medical Teacher
https://www.readbyqxmd.com/read/29457918/quality-of-life-among-patients-during-subacute-phase-following-stroke-during-hospitalisation-period-in-shanghai
#7
Jiang Jingwen, Jin Han, Zhang Yu, Huang Xiaojun, Zhuang Junpeng, Shen Fanxia, Liu Jianrong
OBJECTIVE: This study aimed to investigate the factors influencing the quality of life of in-hospital subacute stroke patients. METHODS: The patients of subacute stroke (within four weeks) in our institution between 2015 and 2016 were recruited. Patients' characteristics and QOL were obtained from medical charts and stroke-specific quality of life scale (SS-QOL). Associations of each domain in SS-QOL with socio-demographic, clinical factors and patient satisfaction were investigated using the linear regression models...
February 19, 2018: International Journal of Psychiatry in Clinical Practice
https://www.readbyqxmd.com/read/29457908/process-proteomics-of-beer-reveals-a-dynamic-proteome-with-extensive-modifications
#8
Benjamin L Schulz, Toan K Phung, Michele Bruschi, Agnieszka Janusz, Jeff Stewart, John Mehan, Peter Healy, Amanda S Nouwens, Glen P Fox, Claudia E Vickers
Modern beer production is a complex industrial process. However, some of its biochemical details remain unclear. Using mass spectrometry proteomics, we have performed a global untargeted analysis of the proteins present across time during nano-scale beer production. Samples included sweet wort produced by a high temperature infusion mash, hopped wort, and bright beer. This analysis identified over 200 unique proteins from barley and yeast, emphasizing the complexity of the process and product. We then used data independent SWATH-MS to quantitatively compare the relative abundance of these proteins throughout the process...
February 19, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29457906/optimized-phenotypic-biomarker-discovery-and-confounder-elimination-via-covariate-adjusted-projection-to-latent-structures-from-metabolic-spectroscopy-data
#9
Joram M Posma, Isabel Garcia-Perez, Timothy M D Ebbels, John C Lindon, Jeremiah Stamler, Paul Elliott, Elaine Holmes, Jeremy K Nicholson
Metabolism is altered by genetics, diet, disease status, environment and many other factors. Modelling either one of these is often done without considering the effects of the other covariates. Attributing differences in metabolic profile to one of these factors needs to be done while controlling for the metabolic influence of the rest. We describe here a data analysis framework and novel confounder-adjustment algorithm for multivariate analysis of metabolic profiling data. Using simulated data we show that similar numbers of true associations and significantly less false positives are found compared to other commonly used methods...
February 19, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29457860/controlling-the-outgrowth-and-functions-of-neural-stem-cells-the-effect-of-surface-topography
#10
REVIEW
Chara Simitzi, Kanelina Karali, Anthi Ranella, Emmanuel Stratakis
Neural stem cells (NSCs) are self-renewing cells that generate the major cell types of the central nervous system, namely neurons, astrocytes and oligodendrocytes, during embryonic development and in the adult brain. NSCs reside in a complex niche where they are exposed to a plethora of signals, including both soluble and physical signals such as compressive and shear stresses, but also discontinuities and differences in morphology of the extracellular environment, termed as topographical features. Different approaches that incorporate artificial micro- and nano-scale surface topographical features have been developed aiming to recapitulate the in vivo NSC niche discontinuities and features, particularly for in vitro studies...
February 19, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/29457844/effect-of-type-d-personality-on-smoking-status-and-their-combined-impact-on-outcome-after-acute-myocardial-infarction
#11
Egidio Imbalzano, Marco Vatrano, Sebastiano Quartuccio, Roberto Ceravolo, Vincenzo Antonio Ciconte, Paola Rotella, Renato Pardeo, Giovanni Trapani, Pasquale De Fazio, Cristina Segura-Garcia, Rossella Costantino, Antonino Saitta, Giuseppe Mandraffino
BACKGROUND: Smoking cessation is correlated with several psychological, social, biological, and pharmacological aspects. The combined tendency to experience negative emotions and to inhibit the expression of these emotions is indicated as "type D personality," an independent risk marker for clinical outcome in cardiac disease. Despite this effect of type D personality on cardiovascular disease, it is still unclear whether this personality trait may influence smoking cessation after a myocardial infarction...
February 19, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29457795/random-access-in-large-scale-dna-data-storage
#12
Lee Organick, Siena Dumas Ang, Yuan-Jyue Chen, Randolph Lopez, Sergey Yekhanin, Konstantin Makarychev, Miklos Z Racz, Govinda Kamath, Parikshit Gopalan, Bichlien Nguyen, Christopher N Takahashi, Sharon Newman, Hsing-Yeh Parker, Cyrus Rashtchian, Kendall Stewart, Gagan Gupta, Robert Carlson, John Mulligan, Douglas Carmean, Georg Seelig, Luis Ceze, Karin Strauss
Synthetic DNA is durable and can encode digital data with high density, making it an attractive medium for data storage. However, recovering stored data on a large-scale currently requires all the DNA in a pool to be sequenced, even if only a subset of the information needs to be extracted. Here, we encode and store 35 distinct files (over 200 MB of data), in more than 13 million DNA oligonucleotides, and show that we can recover each file individually and with no errors, using a random access approach. We design and validate a large library of primers that enable individual recovery of all files stored within the DNA...
February 19, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29457794/recon3d-enables-a-three-dimensional-view-of-gene-variation-in-human-metabolism
#13
Elizabeth Brunk, Swagatika Sahoo, Daniel C Zielinski, Ali Altunkaya, Andreas Dräger, Nathan Mih, Francesco Gatto, Avlant Nilsson, German Andres Preciat Gonzalez, Maike Kathrin Aurich, Andreas Prlić, Anand Sastry, Anna D Danielsdottir, Almut Heinken, Alberto Noronha, Peter W Rose, Stephen K Burley, Ronan M T Fleming, Jens Nielsen, Ines Thiele, Bernhard O Palsson
Genome-scale network reconstructions have helped uncover the molecular basis of metabolism. Here we present Recon3D, a computational resource that includes three-dimensional (3D) metabolite and protein structure data and enables integrated analyses of metabolic functions in humans. We use Recon3D to functionally characterize mutations associated with disease, and identify metabolic response signatures that are caused by exposure to certain drugs. Recon3D represents the most comprehensive human metabolic network model to date, accounting for 3,288 open reading frames (representing 17% of functionally annotated human genes), 13,543 metabolic reactions involving 4,140 unique metabolites, and 12,890 protein structures...
February 19, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29457781/efficient-synthesis-of-tungsten-oxide-hydrate-based-nanocomposites-for-applications-in-bifunctional-electrochromic-energy-storage-devices
#14
Xueting Chang, Ruirui Hu, Shibin Sun, Tong Lu, Tao Liu, Yanhua Lei, Lihua Dong, Yansheng Yin, Yanqiu Zhu
In this work, we realized the large-scale synthesis of WO3·H2O nanoflakes (NFs), g-C3N4/WO3·H2O nanocomposite (NC) and graphene (G)/WO3·H2O NC via a sonochemical process with tungsten salt as the precursor, g-C3N4 or G sheets as the supports, and distilled water as the solvent. Both the g-C3N4/WO3·H2O NC and the G/WO3·H2O NC exhibited much better EC performance (higher coloration efficiencies and faster response times) than that of the WO3·H2O NFs. Using the WO3·H2O-based materials as electrode materials, EC batteries that integrate the energy storage and EC functions in one device have been assembled...
February 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29457774/a-review-of-advances-in-pixel-detectors-for-experiments-with-high-rate-and-radiation
#15
Maurice Garcia-Sciveres, N Wermes
The Large Hadron Collider (LHC) experiments ATLAS and CMS have established hybrid pixel detectors as the instrument of choice for particle tracking and vertexing in high rate and radiation environments, as they operate close to the LHC interaction points. With the High Luminosity-LHC upgrade now in sight, for which the tracking detectors will be completely replaced, new generations of pixel detectors are being devised. They have to address enormous challenges in terms of data throughput and radiation levels, ionizing and non-ionizing, that harm the sensing and readout parts of pixel detectors alike...
February 19, 2018: Reports on Progress in Physics
https://www.readbyqxmd.com/read/29457754/effect-of-ship-hull-form-on-the-resistance-penalty-from-biofouling
#16
Dinis Oliveira, Ann I Larsson, Lena Granhag
Hull biofouling is a well-known problem for the shipping industry, leading to increased resistance and fuel consumption. Considering that the effects of hull form on resistance are known to be higher for a less slender hull, it is hypothesised in this paper that the effect of biofouling roughness on resistance is also dependent on the hull form. To test this hypothesis, previously reported full-scale numerical results on a containership are re-analysed. Form effects on roughness penalties, corresponding to KΔCT = 0...
February 19, 2018: Biofouling
https://www.readbyqxmd.com/read/29457721/reconstructing-dynamic-promoter-activity-profiles-from-reporter-gene-data
#17
Soumya Kannan, Thomas Sams, Jérôme Maury, Christopher T Workman
Accurate characterization of promoter activity is important when designing expression systems for systems biology and metabolic engineering applications. Promoters that respond to changes in the environment enable the dynamic control of gene expression without the necessity of inducer compounds, for example. However, the dynamic nature of these processes poses challenges for estimating promoter activity. Most experimental approaches utilize reporter gene expression to estimate promoter activity. Typically the reporter gene encodes a fluorescent protein that is used to infer a constant promoter activity despite the fact that the observed output may be dynamic and is a number of steps away from the transcription process...
February 19, 2018: ACS Synthetic Biology
https://www.readbyqxmd.com/read/29457700/impact-of-home-spirometry-on-medication-adherence-among-adolescents-with-cystic-fibrosis
#18
Aarti Shakkottai, Niko Kaciroti, Lauren Kasmikha, Samya Z Nasr
OBJECTIVE: Medication adherence among adolescents with cystic fibrosis (CF) is often suboptimal and this has significant impact on their health and quality of life. The purpose of the study was to evaluate the impact of frequent home pulmonary function (PFT) monitoring on medication adherence among adolescents with CF. HYPOTHESIS: We hypothesized that weekly home PFT monitoring will improve adherence while not significantly adding to the treatment burden. METHODS: Individuals aged 12-21 years with CF were provided a spirometer to measure PFTs weekly for 1 year...
February 19, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29457687/substrate-binding-drives-active-site-closing-of-human-blood-group-b-galactosyltransferase-as-revealed-by-hot-spot-labeling-and-nmr-experiments
#19
Thomas Peters, Sophie Weissbach, Friedemann Flügge
Crystallography has shown that human blood group A (GTA) and B (GTB) glycosyltransferases undergo transitions between "open", "semi-closed", and "closed" conformations upon substrate binding. However, the time scales of corresponding conformational reorientations are unknown. Crystal structures show that Trp and Met residues are located at "conformational hot spots" of the enzymes. Therefore, we have utilized 15N-side chain labeling of Trp residues, and 13C-methyl labeling of Met residues to study substrate induced conformational transitions of GTB...
February 19, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29457672/gambling-related-cognitive-distortions-predict-level-of-function-among-us-veterans-seeking-treatment-for-gambling-disorders
#20
Steven D Shirk, Megan M Kelly, Shane W Kraus, Marc N Potenza, Kendra Pugh, Christopher Waltrous, Edward Federman, Christopher Krebs, Charles E Drebing
BACKGROUND AND OBJECTIVES: Gambling Disorder (GD) is characterized by recurrent gambling behavior that is associated with significant impairment and distress, high psychiatric comorbidities, and high functional disability. The military veteran population appears particularly susceptible to developing the disorder, but relatively little has been studied among this population. The purpose of the present study is to investigate the clinical psychopathologies and comorbidities of veterans seeking treatment for problem gambling and how problem gambling may impact functioning...
February 19, 2018: American Journal on Addictions
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