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https://www.readbyqxmd.com/read/28931252/a-simplified-method-of-accurate-postprocessing-of-diffusion-tensor-imaging-for-use-in-brain-tumor-resection
#1
Phillip A Bonney, Andrew K Conner, Lillian B Boettcher, Ahmed A Cheema, Chad A Glenn, Adam D Smitherman, Nathan A Pittman, Michael E Sughrue
BACKGROUND: Use of diffusion tensor imaging (DTI) in brain tumor resection has been limited in part by a perceived difficulty in implementing the techniques into neurosurgical practice. OBJECTIVE: To demonstrate a simple DTI postprocessing method performed without a neuroscientist and to share results in preserving patient function while aggressively resecting tumors. METHODS: DTI data are obtained in all patients with tumors located within presumed eloquent cortices...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28930925/conical-modification-of-forearm-free-flaps-for-single-stage-reconstruction-after-total-orbital-exenteration
#2
Chad A Purnell, Elbert E Vaca, Marco F Ellis
BACKGROUND: Orbital exenteration is a significant reconstructive challenge for plastic surgeons. Options described for these defects range from healing by secondary intention to free tissue transfer. The authors present our preferred reconstruction of orbital defects with free forearm-based flaps, which provides quality soft tissue and orbital contouring in 1 stage to consistently allow placement of bone-anchored implants for eventual orbital prosthesis. METHODS: This conical shape of the orbit is deconstructed into a "Pac-Man" type shaped flap that leaves adequate depth for a prosthesis...
September 19, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28930494/simplify-1-a-phase-iii-randomized-trial-of-momelotinib-versus-ruxolitinib-in-janus-kinase-inhibitor-na%C3%A3-ve-patients-with-myelofibrosis
#3
Ruben A Mesa, Jean-Jacques Kiladjian, John V Catalano, Timothy Devos, Miklos Egyed, Andrzei Hellmann, Donal McLornan, Kazuya Shimoda, Elliott F Winton, Wei Deng, Ronald L Dubowy, Julia D Maltzman, Francisco Cervantes, Jason Gotlib
Purpose We evaluated the efficacy and safety of momelotinib, a potent and selective Janus kinase 1 and 2 inhibitor (JAKi), compared with ruxolitinib, in JAKi-naïve patients with myelofibrosis. Patients and Methods Patients (N = 432) with high risk or intermediate-2 risk or symptomatic intermediate-1 risk myelofibrosis were randomly assigned to receive 24 weeks of treatment with momelotinib 200 mg once daily or ruxolitinib 20 mg twice a day (or per label), after which all patients could receive open-label momelotinib...
September 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28930471/possible-way-to-study-cononsolvency-in-confinement-lattice-density-functional-theory-approach
#4
Xueqian Chen, Wei Feng, Xia Han, Honglai Liu
The polymer lattice density functional theory (PLDFT) is used to investigate the cononsolvency (CNS) phenomena related to polymer adsorption in a slit pore. Specifically, two simplest types of CNS are examined: CNS1 with solvent-cosolvent binding as the dominate factor and CNS2 with polymer-cosolvent binding as the dominate factor. The simplified models for CNS1/CNS2 well capture the symmetrical/asymmetrical reentrant swelling transition of polymers positively/negatively adsorbed on the solid surface as confirmed by the calculation of PLDFT...
September 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28930350/vertical-dielectric-screening-of-few-layer-van-der-waals-semiconductors
#5
Jahyun Koo, Shiyuan Gao, Hoonkyung Lee, Li Yang
Vertical dielectric screening is a fundamental parameter of few-layer van der Waals two-dimensional (2D) semiconductors. However, unlike the widely-accepted wisdom claiming that the vertical dielectric screening is sensitive to the thickness, our first-principles calculation based on the linear response theory (within the weak field limit) reveals that this screening is independent of the thickness and, in fact, it is the same as the corresponding bulk value. This conclusion is verified in a wide range of 2D paraelectric semiconductors, covering narrow-gap ones and wide-gap ones with different crystal symmetries, providing an efficient and reliable way to calculate and predict static dielectric screening of reduced-dimensional materials...
September 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28929984/developing-a-hospital-disaster-preparedness-plan-for-mass-casualty-incidents-lessons-learned-from-the-downtown-beirut-bombing
#6
Mazen El Sayed, Ali F Chami, Eveline Hitti
Mass casualty incidents (MCIs) are becoming more frequent worldwide, especially in the Middle East where violence in Syria has spilled over to many neighboring countries. Lebanon lacks a coordinated prehospital response system to deal with MCIs; therefore, hospital preparedness plans are essential to deal with the surge of casualties. This report describes our experience in dealing with an MCI involving a car bomb in an urban area of downtown Beirut, Lebanon. It uses general response principles to propose a simplified response model for hospitals to use during MCIs...
September 20, 2017: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/28929911/understanding-the-effects-of-intermittent-shedding-on-the-transmission-of-infectious-diseases-example-of-salmonellosis-in-pigs
#7
Glenn E Lahodny, Raju Gautam, Renata Ivanek
A number of environmentally transmitted infectious diseases are characterized by intermittent infectiousness of infected hosts. However, it is unclear whether intermittent infectiousness must be explicitly accounted for in mathematical models for these diseases or if a simplified modelling approach is acceptable. To address this question we study the transmission of salmonellosis between penned pigs in a grower-finisher facility. The model considers indirect transmission, growth of free-living Salmonella within the environment, and environmental decontamination...
December 2017: Journal of Biological Dynamics
https://www.readbyqxmd.com/read/28929512/systematic-design-of-a-magnetically-levitated-brushless-dc-motor-for-a-reversible-rotary-intra-aortic-blood-pump
#8
Yaxin Wang, Thomas G Logan, P Alex Smith, Po-Lin Hsu, William E Cohn, Liping Xu, Richard A McMahon
The IntraVAD is a miniature intra-aortic ventricular assist device (VAD) designed to work in series with the compromised left ventricle. A reverse-rotation control (RRc) mode has been developed to increase myocardial perfusion and reduce ventricular volume. The RRc mode includes forward rotation in systole and reverse rotation in diastole, which requires the IntraVAD to periodically reverse its rotational direction in synchrony with the cardiac cycle. This periodic reversal leads to changes in pressure force over the impeller, which makes the entire system less stable...
September 20, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28928784/association-of-stress-salivary-cortisol-level-and-periodontitis-among-the-inmates-of-a-central-prison-in-kerala
#9
Angel Fenol, Susan Jebi, Sajitha Krishnan, Jayachandran Perayil, Rajesh Vyloppillil, Anuradha Bhaskar, Sai Megha Menon, Ashitha Mohandas
BACKGROUND: The aim of this cross-sectional study was to evaluate the association between stress, salivary cortisol, and periodontitis among the inmates of the central prison. MATERIALS AND METHODS: Seventy inmates were grouped depending on their pocket depth into Group A (pocket depth >4 mm and <6 mm), Group B (at least four sites with pocket depth ≥6 mm), and Group C (pocket depth ≤3 mm). The clinical parameters such as the oral hygiene index-simplified, gingival index, pocket depth, and the clinical attachment levels (CALs) were recorded...
July 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28928650/locomotor-sub-functions-for-control-of-assistive-wearable-robots
#10
Maziar A Sharbafi, Andre Seyfarth, Guoping Zhao
A primary goal of comparative biomechanics is to understand the fundamental physics of locomotion within an evolutionary context. Such an understanding of legged locomotion results in a transition from copying nature to borrowing strategies for interacting with the physical world regarding design and control of bio-inspired legged robots or robotic assistive devices. Inspired from nature, legged locomotion can be composed of three locomotor sub-functions, which are intrinsically interrelated: Stance: redirecting the center of mass by exerting forces on the ground...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28928409/modelling-sequences-and-temporal-networks-with-dynamic-community-structures
#11
Tiago P Peixoto, Martin Rosvall
In evolving complex systems such as air traffic and social organisations, collective effects emerge from their many components' dynamic interactions. While the dynamic interactions can be represented by temporal networks with nodes and links that change over time, they remain highly complex. It is therefore often necessary to use methods that extract the temporal networks' large-scale dynamic community structure. However, such methods are subject to overfitting or suffer from effects of arbitrary, a priori-imposed timescales, which should instead be extracted from data...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28928329/single-incision-trocar-less-endoscopic-management-of-giant-liver-hydatid-cyst-in-children
#12
Himanshu Acharya, Vikesh Agrawal, Abhishek Tiwari, Dhananjaya Sharma
INTRODUCTION: Laparoscopic management of giant hydatid cyst has limitations such as spillage, poor control, difficulties in suctioning the contents through special ports which are not easily available, difficulty in the obliteration of residual cavity and recurrence. We describe single-incision trocar-less endoscopic (SITE) technique which simplifies enucleation and management of residual cavity. METHOD: Inclusion criteria for these cases were patients having single uncomplicated giant hydatid cyst >5 cm present at the surface of the liver and palpable on clinical examination...
September 20, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28927937/evaluation-of-intensity-drift-correction-strategies-using-metabodrift-a-normalization-tool-for-multi-batch-metabolomics-data
#13
Chanisa Thonusin, Heidi B IglayReger, Tanu Soni, Amy E Rothberg, Charles F Burant, Charles R Evans
In recent years, mass spectrometry-based metabolomics has increasingly been applied to large-scale epidemiological studies of human subjects. However, the successful use of metabolomics in this context is subject to the challenge of detecting biologically significant effects despite substantial intensity drift that often occurs when data are acquired over a long period or in multiple batches. Numerous computational strategies and software tools have been developed to aid in correcting for intensity drift in metabolomics data, but most of these techniques are implemented using command-line driven software and custom scripts which are not accessible to all end users of metabolomics data...
September 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28927788/a-structural-investigation-of-fisle-412-a-peptidomimetic-compound-derived-from-saquinavir-that-targets-lupus-autoantibodies
#14
Mingzhu He, Kai Fan Cheng, Sonya VanPatten, Ona Bloom, Betty Diamond, Yousef Al-Abed
FISLE-412 is the first reported small molecule peptidomimetic that neutralizes anti-dsDNA autoantibodies associated with systemic lupus erythematosus (SLE) pathogenesis. FISLE-412 is a complex small molecule that involves a challenging synthesis scheme, but has attractive pharmacological activities as a potential small molecule therapeutic in lupus. Therefore, we initiated a Structure-Activity Relationship study to simplify the complexity of FISLE-412. We synthesized a small library of mimetopes around the FISLE-412 structure and identified several analogues which could neutralize anti-DNA lupus antibodies in vitro and ex vivo...
September 16, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28927636/feasibility-of-coronary-fractional-flow-reserve-with-dual-anti-platelet-therapy-in-low-risk-coronary-lesions-without-systemic-anticoagulation-results-of-the-smart-ffr-study
#15
Fernando Boccalandro, Mandeep Dhindsa, Prem Subramaniyam, Mary Mok
BACKGROUND: Fractional flow reserve (FFR) is used to assess the functional significance of coronary artery stenoses. The optimal anti-thrombotic regimen for FFR has not been studied. PURPOSE: The goal of this study was to determine whether FFR could be safely performed in Type A coronary lesions, using only upstream dual anti-platelet therapy (DAT) with aspirin and clopidogrel, compared with DAT plus anticoagulation in low risk coronary lesions. METHODS/MATERIALS: Two hundred patients undergoing FFR for Type A intermediate coronary lesions were blindly randomized into two groups of 100 patients each...
August 18, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28926329/postoperative-haematocrit-and-outcome-in-critically-ill-surgical-patients
#16
Ana Martins Lopes, Diana Silva, Gabriela Sousa, Joana Silva, Alice Santos, Fernando José Abelha
INTRODUCTION: Haematocrit has been studied as an outcome predictor. The aim of this study was to evaluate the correlation between low haematocrit at surgical intensive care unit admission and high disease scoring system score and early outcomes. MATERIAL AND METHODS: This retrospective study included 4398 patients admitted to the surgical intensive care unit between January 2006 and July 2013. Acute physiology and chronic health evaluation and simplified acute physiology score II values were calculated and all variables entered as parameters were evaluated independently...
August 31, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28926145/a-crispr-reimagining-new-twists-and-turns-of-crispr-beyond-the-genome-engineering-revolution
#17
Robert J Plummer, Yi Guo, Ying Peng
Despite its explosive applications in genome engineering, CRISPR (Clustered Regularly Interspersed Short Palindromic Repeats) has been developed into a versatile tool beyond its well-known nuclease function. In this prospect article, we summarize a few exciting "off-label" applications of CRISPR including manipulating DNA sequences, visualizing chromosomal loci in living cells, and modulating transcription and chromatin structures. These novel applications will likely elevate CRISPR tools into yet another level of sophistication and diversity, leading to many more exciting cell biological discoveries...
September 19, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28926030/the-allocation-of-resources-for-animal-health
#18
K S Howe
Economics is too important to be left to the experts. This paper is therefore mainly for animal health policy-makers who are not economists but want a better appreciation of how economics can contribute to resource allocation decisions. First, the methodology of economic analysis is outlined with the objective of dispelling criticisms of its simplifying assumption of rationality. Then, unusual in economics but more familiar to biological and veterinary scientists, the technical aspects of transforming resources into products are discussed...
April 2017: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28925472/the-erlangen-questionnaire-a-new-5-item-screening-tool-for-obstructive-sleep-apnea-in-a-sleep-clinic-population-a-prospective-double-blinded-study
#19
M Traxdorf, K Tziridis, C Scherl, H Iro, J Haferkamp
OBJECTIVE: The aim of this study was to develop and validate a simplified screening tool for identifying obstructive sleep apnea (OSA) in a sleep clinic population. PATIENTS AND METHODS: A total of 160 patients from a sleep clinic population was enrolled in the prospective, double-blinded study. OSA was defined by using diagnostic criteria of the ICSD-3 after overnight polysomnography (n=96) or polygraphy (n=64). The first 60 patients filled out a multi-item questionnaire and formed the development group...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28925419/mosaicqa-a-general-approach-to-facilitate-basic-data-quality-assurance-for-epidemiological-research
#20
Martin Bialke, Henriette Rau, Thea Schwaneberg, Rene Walk, Thomas Bahls, Wolfgang Hoffmann
BACKGROUND: Epidemiological studies are based on a considerable amount of personal, medical and socio-economic data. To answer research questions with reliable results, epidemiological research projects face the challenge of providing high quality data. Consequently, gathered data has to be reviewed continuously during the data collection period. OBJECTIVES: This article describes the development of the mosaicQA-library for non-statistical experts consisting of a set of reusable R functions to provide support for a basic data quality assurance for a wide range of application scenarios in epidemiological research...
May 29, 2017: Methods of Information in Medicine
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