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https://www.readbyqxmd.com/read/28647900/breast-cancer-risk-associated-with-genotype-polymorphisms-of-the-aurora-kinase-a-gene-aurka-a-case-control-study-in-a-high-altitude-ecuadorian-mestizo-population
#1
Andrés López-Cortés, Alejandro Cabrera-Andrade, Fabián Oña-Cisneros, Felipe Rosales, Malena Ortiz, Eduardo Tejera, César Paz-Y-Miño
Breast cancer (BC) is the leading cause of cancer related death among women in 2014. The AURKA gene that encodes the protein called Aurora kinase A plays an important role in the progression of the cell cycle, by controlling and promoting the entry into the phase of mitosis. The single nucleotide polymorphism AURKA T91A (rs2273535) (Phe21Ile) has been identified as functional alternator of this kinase, the Ile allele is associated with the occurrence of chromosome segregation errors and tumor progression. Therefore, it is essential to know how BC risk is associated with histopathological characteristics, immunohistochemical characteristics, and genotype polymorphism in a high altitude Ecuadorian mestizo population...
June 24, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28647883/casper-computer-aided-segmentation-of-imperceptible-motion-a-learning-based-tracking-of-an-invisible-needle-in-ultrasound
#2
Parmida Beigi, Robert Rohling, Septimiu E Salcudean, Gary C Ng
PURPOSE: This paper presents a new micro-motion-based approach to track a needle in ultrasound images captured by a handheld transducer. METHODS: We propose a novel learning-based framework to track a handheld needle by detecting microscale variations of motion dynamics over time. The current state of the art on using motion analysis for needle detection uses absolute motion and hence work well only when the transducer is static. We have introduced and evaluated novel spatiotemporal and spectral features, obtained from the phase image, in a self-supervised tracking framework to improve the detection accuracy in the subsequent frames using incremental training...
June 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28647814/the-effects-of-variable-practice-on-locomotor-adaptation-to-a-novel-asymmetric-gait
#3
Jacob W Hinkel-Lipsker, Michael E Hahn
Very little is known about the effects of specific practice on motor learning of predictive balance control during novel bipedal gait. This information could provide an insight into how the direction and magnitude of predictive errors during acquisition of a novel gait task influence transfer of balance control, as well as yield a practice protocol for the restoration of balance for those with locomotor impairments. This study examined the effect of a variable practice paradigm on transfer of a novel asymmetric gait pattern in able-bodied individuals...
June 24, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28647781/computer-navigation-assisted-surgery-for-musculoskeletal-tumors-a-closer-look-into-the-learning-curve
#4
Kevin Staats, Joannis Panotopoulos, Thomas M Tiefenboeck, Reinhard Windhager, Philipp T Funovics
BACKGROUND: Computer navigation-assisted surgery for musculoskeletal tumors has shown to reduce the risk of intra-lesional margins in resection. Experiences with this method are still limited to smaller case series. METHOD: We reviewed our first experiences in 24 patients in whom computer navigation-assisted surgery had been performed. In 7 of these patients (6 male and 1 female), this has influenced the surgical treatment plan and navigation was used for both tumor resection and reconstruction...
June 24, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28647623/proximal-femoral-osteosarcoma-diagnostic-challenges-translate-into-delayed-and-inappropriate-management
#5
M Dahan, P Anract, A Babinet, F Larousserie, D Biau
BACKGROUND: The proximal femuris an uncommon site of osteosarcoma. The unusual manifestations at this site may lead to diagnostic and therapeutic mistakes. We therefore performed a retrospective studyto estimate the proportions of patients with imaging study findings and/or clinical manifestations typical for osteosarcoma and/or inappropriate treatment decisions. HYPOTHESIS: Proximal femoral osteosarcoma often produces atypical clinical and radiological presentations...
June 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28647553/morphosyntactic-correctness-of-written-language-production-in-adults-with-moderate-to-severe-congenital-hearing-loss
#6
Elke Huysmans, Jan de Jong, Joost M Festen, Martine M R Coene, S Theo Goverts
OBJECTIVE: To examine whether moderate to severe congenital hearing loss (MSCHL) leads to persistent morphosyntactic problems in the written language production of adults, as it does in their spoken language production. DESIGN: Samples of written language in Dutch were analysed for morphosyntactic correctness and syntactic complexity. STUDY SAMPLE: 20 adults with MSCHL and 10 adults with normal hearing (NH). RESULTS: Adults with MSCHL did not differ from adults with NH in the morphosyntactic correctness and syntactic complexity of their written utterances...
June 15, 2017: Journal of Communication Disorders
https://www.readbyqxmd.com/read/28647496/a-comprehensive-complex-systems-approach-to-the-study-and-analysis-of-mammalian-cell-cycle-control-system-in-the-presence-of-dna-damage-stress
#7
Ali Abroudi, Sandhya Samarasinghe, Don Kulasiri
Not many models of mammalian cell cycle system exist due to its complexity. Some models are too complex and hard to understand, while some others are too simple and not comprehensive enough. Moreover, some essential aspects, such as the response of G1-S and G2-M checkpoints to DNA damage as well as the growth factor signalling, have not been investigated from a systems point of view in current mammalian cell cycle models. To address these issues, we bring a holistic perspective to cell cycle by mathematically modelling it as a complex system consisting of important sub-systems that interact with each other...
June 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28647486/geographically-weighted-negative-binomial-regression-applied-to-zonal-level-safety-performance-models
#8
Marcos José Timbó Lima Gomes, Flávio Cunto, Alan Ricardo Silva
Generalized Linear Models (GLM) with negative binomial distribution for errors, have been widely used to estimate safety at the level of transportation planning. The limited ability of this technique to take spatial effects into account can be overcome through the use of local models from spatial regression techniques, such as Geographically Weighted Poisson Regression (GWPR). Although GWPR is a system that deals with spatial dependency and heterogeneity and has already been used in some road safety studies at the planning level, it fails to account for the possible overdispersion that can be found in the observations on road-traffic crashes...
June 22, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28647467/reliability-and-measurement-error-of-the-osteoarthritis-research-society-international-recommended-performance-based-tests-of-physical-function-in-people-with-hip-and-knee-osteoarthritis
#9
Fiona Dobson, Rana S Hinman, Michelle Hall, Charlotte J Marshall, Tim Sayer, Clinton Anderson, Nicolas Newcomb, Paul W Stratford, Kim L Bennell
OBJECTIVE: To estimate the reliability and measurement error of performance-based tests of physical function recommended by the Osteoarthritis Research Society International in people with hip and/or knee osteoarthritis. DESIGN: Prospective repeated measures between independent raters within a session and within-rater over a week interval. Relative reliability was estimated for 51 people with hip and/or knee osteoarthritis (mean age 64.5 years, SD 6.21 years; 47% females; 36 (70%) primary knee OA) on the 30s Chair Stand Test (30sCST), 40m Fast Paced Walk Test (40mFPWT), 11-Stair Climb Test (11-step SCT), Timed Up and Go (TUG), Six Minute Walk Test (6MWT), 10m Fast Paced Walk Test (10mFPWT) and 20s Stair Climb Test (20sSCT) using intra-class correlation coefficients (ICC)...
June 21, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28647257/performance-of-ch4modwetland-for-the-case-study-of-different-regions-of-natural-chinese-wetland
#10
Tingting Li, Qing Zhang, Zhigang Cheng, Guocheng Wang, Lijun Yu, Wen Zhang
Reliable national estimates of CH4 emissions from natural wetlands depend on model validation based on site observations. We therefore evaluated the performance of the CH4MODwetland model in simulating CH4 emissions from 11 representative wetland sites in five regions of China. Model performance analysis showed that this method effectively simulates differences in the CH4 fluxes between different sites and regions. The model efficiency for estimating the daily CH4 fluxes in the northeastern China (NE), Inner Mongolia and northwestern China (NW), the North China plain and the Middle-Lower Yangtze Plain (E) and the Qinghai Tibetan Plateau (SW) was 0...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647205/measurement-properties-of-visual-rating-of-postural-orientation-errors-of-the-lower-extremity-a-systematic-review-and-meta-analysis
#11
REVIEW
Jenny Nae, Mark W Creaby, Anna Cronström, Eva Ageberg
OBJECTIVES: To systematically review measurement properties of visual assessment and rating of Postural Orientation Errors (POEs) in participants with or without lower extremity musculoskeletal disorders. METHODS: A systematic review according to the PRISMA guidelines was conducted. The search was performed in Medline (Pubmed), CINAHL and EMBASE (OVID) databases until August 2016. Studies reporting measurement properties for visual rating of postural orientation during the performance of weight-bearing functional tasks were included...
April 18, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28647201/axis-misalignment-of-toric-intraocular-lens-placement-error-and-postoperative-rotation
#12
Yasushi Inoue, Hiroyasu Takehara, Tetsuro Oshika
No abstract text is available yet for this article.
June 21, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28647196/smooth-muscle-cells-of-human-veins-show-an-increased-response-to-injury-at-valve-sites
#13
Shinsuke Kikuchi, Lihua Chen, Kevin Xiong, Yukihiro Saito, Nobuyoshi Azuma, Gale Tang, Michael Sobel, Thomas N Wight, Richard D Kenagy
OBJECTIVE: Venous valves are essential but are prone to injury, thrombosis, and fibrosis. We compared the behavior and gene expression of smooth muscle cells (SMCs) in the valve sinus vs nonvalve sites to elucidate biologic differences associated with vein valves. METHODS: Tissue explants of fresh human saphenous veins were prepared, and the migration of SMCs from explants of valve sinus vs nonvalve sinus areas was measured. Proliferation and death of SMCs were determined by staining for Ki67 and terminal deoxynucleotidyl transferase dUTP nick end labeling...
June 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28647163/observer-based-distributed-adaptive-fault-tolerant-containment-control-of-multi-agent-systems-with-general-linear-dynamics
#14
Dan Ye, Mengmeng Chen, Kui Li
In this paper, we consider the distributed containment control problem of multi-agent systems with actuator bias faults based on observer method. The objective is to drive the followers into the convex hull spanned by the dynamic leaders, where the input is unknown but bounded. By constructing an observer to estimate the states and bias faults, an effective distributed adaptive fault-tolerant controller is developed. Different from the traditional method, an auxiliary controller gain is designed to deal with the unknown inputs and bias faults together...
June 22, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28647020/reprint-of-a-comprehensive-review-of-group-level-model-performance-in-the-presence-of-heteroscedasticity-can-a-single-model-control-type-i-errors-in-the-presence-of-outliers
#15
Jeanette A Mumford
Even after thorough preprocessing and a careful time series analysis of functional magnetic resonance imaging (fMRI) data, artifact and other issues can lead to violations of the assumption that the variance is constant across subjects in the group level model. This is especially concerning when modeling a continuous covariate at the group level, as the slope is easily biased by outliers. Various models have been proposed to deal with outliers including models that use the first level variance or that use the group level residual magnitude to differentially weight subjects...
July 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28646925/stress-ulcer-prophylaxis-versus-placebo-or-no-prophylaxis-in-adult-hospitalised-acutely-ill-patients-protocol-for-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis
#16
Søren Marker, Anders Perner, Jørn Wetterslev, Marija Barbateskovic, Janus Christian Jakobsen, Mette Krag, Anders Granholm, Carl Thomas Anthon, Morten Hylander Møller
BACKGROUND: Stress ulcer prophylaxis is considered standard of care in many critically ill patients in the intensive care unit (ICU). However, the quality of evidence supporting this has recently been questioned, and clinical equipoise exists. Whether there is overall benefit or harm of stress ulcer prophylaxis in adult hospitalised acutely ill patients is unknown. Accordingly, we aim to assess patient-important benefits and harms of stress ulcer prophylaxis versus placebo or no treatment in adult hospitalised acutely ill patients with high risk of gastrointestinal bleeding irrespective of hospital setting...
June 24, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28646922/an-investigation-of-the-impact-of-using-different-methods-for-network-meta-analysis-a-protocol-for-an-empirical-evaluation
#17
Amalia Emily Karahalios, Georgia Salanti, Simon L Turner, G Peter Herbison, Ian R White, Areti Angeliki Veroniki, Adriani Nikolakopoulou, Joanne E Mckenzie
BACKGROUND: Network meta-analysis, a method to synthesise evidence from multiple treatments, has increased in popularity in the past decade. Two broad approaches are available to synthesise data across networks, namely, arm- and contrast-synthesis models, with a range of models that can be fitted within each. There has been recent debate about the validity of the arm-synthesis models, but to date, there has been limited empirical evaluation comparing results using the methods applied to a large number of networks...
June 24, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28646906/modulation-of-oxidative-phosphorylation-and-redox-homeostasis-in-mitochondrial-ndufs4-deficiency-via-mesenchymal-stem-cells
#18
Marlen Melcher, Katharina Danhauser, Annette Seibt, Özer Degistirici, Fabian Baertling, Arun Kumar Kondadi, Andreas S Reichert, Werner J H Koopman, Peter H G M Willems, Richard J Rodenburg, Ertan Mayatepek, Roland Meisel, Felix Distelmaier
BACKGROUND: Disorders of the oxidative phosphorylation (OXPHOS) system represent a large group among the inborn errors of metabolism. The most frequently observed biochemical defect is isolated deficiency of mitochondrial complex I (CI). No effective treatment strategies for CI deficiency are so far available. The purpose of this study was to investigate whether and how mesenchymal stem cells (MSCs) are able to modulate metabolic function in fibroblast cell models of CI deficiency. METHODS: We used human and murine fibroblasts with a defect in the nuclear DNA encoded NDUFS4 subunit of CI...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28646764/adaptive-near-optimal-neuro-controller-for-continuous-time-nonaffine-nonlinear-systems-with-constrained-input
#19
Kasra Esfandiari, Farzaneh Abdollahi, Heidar Ali Talebi
In this paper, an identifier-critic structure is introduced to find an online near-optimal controller for continuous-time nonaffine nonlinear systems having saturated control signal. By employing two Neural Networks (NNs), the solution of Hamilton-Jacobi-Bellman (HJB) equation associated with the cost function is derived without requiring a priori knowledge about system dynamics. Weights of the identifier and critic NNs are tuned online and simultaneously such that unknown terms are approximated accurately and the control signal is kept between the saturation bounds...
June 21, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28646712/prediction-of-vocational-participation-and-global-role-functioning-in-help-seeking-young-adults-from-neurocognitive-demographic-and-clinical-variables
#20
Alice J Cairns, David J Kavanagh, Frances Dark, Steven M McPhail
BACKGROUND: The purpose of this study was to investigate neurocognitive, demographic and clinical correlates of vocational participation among a sample of young help-seeking adults. METHODS: Young people (18-25 years) accessing an early intervention youth health service participated. The Global Functioning: Role scale and level of vocational participation, participant characteristics (age, gender, socioeconomic background and family history of serious mental illness), distress, psychotic-like experiences, substance use, and mental health diagnoses were recorded...
June 13, 2017: Journal of Affective Disorders
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