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https://www.readbyqxmd.com/read/28937271/assesment-of-radiation-induced-secondary-cancer-risk-in-the-brazilian-population-from-left-sided-breast-3d-crt-using-mcnpx
#1
Bruno Melo Mendes, Bruno Machado Trindade, Telma Cristina Ferreira Fonseca, Tarcisio Passos Ribeiro de Campos
OBJECTIVE: The aim of this work was to simulate a 6MV conventional breast 3D conformational radiotherapy (3D-CRT) with physical wedges (50Gy/25#) in the left breast, calculate the mean absorbed dose in the body organs using robust models and computational tools and estimate the secondary cancer-incidence risk to the Brazilian population. METHODS: The VW female phantom was used in the simulations. PTV was defined in the left breast. The 6MV parallel-opposed fields breast-RT protocol was simulated with MCNPx code...
September 20, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28931699/adoption-of-telehealth-remote-biometric-monitoring-among-peritoneal-dialysis-patients-in-the-united-states
#2
Susie Q Lew, Neal Sikka, Clinton Thompson, Teena Cherian, Manya Magnus
We examined participant uptake and utilization of remote monitoring devices, and the relationship between remote biometric monitoring (RBM) of weight (Wt) and blood pressure (BP) with self-monitoring requirements. Participants on peritoneal dialysis (PD) (n = 269) participated in a Telehealth pilot study of which 253 used remote monitoring of BP and 255 for Wt. Blood pressure and Wt readings were transmitted in real time to a Telehealth call center, which were then forwarded to the PD nurses for real-time review...
September 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28911098/the-smap2-rna-binding-motif-in-the-3-utr-affects-mrna-stability-in-the-crenarchaeum-sulfolobus-solfataricus
#3
Birgit Märtens, Kundan Sharma, Henning Urlaub, Udo Bläsi
Sm and Sm-like proteins represent an evolutionarily conserved family with key roles in RNA metabolism in Pro- and Eukaryotes. In this study, a collection of 53 mRNAs that co-purified with Sulfolobus solfataricus (Sso) SmAP2 were surveyed for a specific RNA binding motif (RBM). SmAP2 was shown to bind with high affinity to the deduced consensus RNA binding motif (SmAP2-cRBM) in vitro. Residues in SmAP2 interacting with the SmAP2-cRBM were mapped by UV-induced crosslinking in combination with mass-spectrometry, and verified by mutational analyses...
September 6, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28893317/perceived-barriers-and-facilitators-to-risk-based-monitoring-in-academic-led-clinical-trials-a-mixed-methods-study
#4
Caroline Hurley, Carol Sinnott, Mike Clarke, Patricia Kearney, Emmy Racine, Joseph Eustace, Frances Shiely
BACKGROUND: In November 2016, the ICH published a requirement for sponsors to develop a systematic, prioritised, risk-based approach to monitoring clinical trials. This approach is more commonly known as risk-based monitoring (RBM). However, recent evidence suggests that a 'gold standard', validated approach to RBM does not exist and it is unclear how sponsors will introduce RBM into their organisations. A first step needed to inform the implementation of RBM is to explore academic trialists' readiness and ability to perform RBM...
September 11, 2017: Trials
https://www.readbyqxmd.com/read/28889186/local-bone-marrow-exposure-how-to-interpret-the-data-on-stable-chromosome-aberrations-in-circulating-lymphocytes-some-comments-on-the-use-of-fish-method-for-dose-reconstruction-for-techa-riverside-residents
#5
Evgenia I Tolstykh, Marina O Degteva, Alexandra V Vozilova, Lynn R Anspaugh
The method of fluorescence in situ hybridization (FISH) applied to peripheral blood T lymphocytes is used for retrospective dose estimation, and the results obtained from the analysis of stable chromosomal aberrations are usually interpreted as a dose accumulated in the red bone marrow (RBM). However, after local internal exposure of the RBM, doses derived from FISH were found to be lower than those derived from direct measurements of radionuclides accumulated in the bodies of exposed persons. These results were obtained for people residing near the Techa River contaminated by (89,90)Sr (beta-emitters) in 1949-1956 (Chelyabinsk Oblast, Russia)...
September 9, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28883453/%C3%AE-catenin-twist-and-snail-transcriptional-regulation-of-emt-in-smokers-and-copd-and-relation-to-airflow-obstruction
#6
Malik Quasir Mahmood, Eugene Haydn Walters, Shakti D Shukla, Steve Weston, Hans Konrad Muller, Chris Ward, Sukhwinder Singh Sohal
COPD is characterised by poorly reversible airflow obstruction usually due to cigarette smoking. The transcription factor clusters of β-catenin/Snail1/Twist has been implicated in the process of epithelial mesenchymal transition (EMT), an intermediate between smoking and airway fibrosis, and indeed lung cancer. We have investigated expression of these transcription factors and their "cellular localization" in bronchoscopic airway biopsies from patients with COPD, and in smoking and non-smoking controls. An immune-histochemical study compared cellular protein expression of β-catenin, Snail1 and Twist, in these subject groups in 3 large airways compartment: epithelium (basal region), reticular basement membrane (Rbm) and underlying lamina propria (LP)...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28845090/the-correlation-between-fstl1-expression-and-airway-remodeling-in-asthmatics
#7
Yahui Liu, Tian Liu, Jinxiang Wu, Tao Li, Xingai Jiao, Haiqing Zhang, Jiping Zhao, Junfei Wang, Lin Liu, Liuzhao Cao, Shuo Li, Jiawei Xu, Jianfeng Xu, Xiaohui Ma, Lei Yang, Liang Dong
BACKGROUND: Asthma is characterized by airway remodeling. Follistatin-like protein 1 (FSTL1) is an extracellular glycoprotein. Recent studies suggest that FSTL1 may participate in the pathogenesis of asthma. OBJECTIVES: To analyze the association between FSTL1 and some parameters and inspect the role of FSTL1 in asthma. METHODS: We examined FSTL1 levels in 32 asthmatics and 25 controls. All subjects enrolled had routine blood tests, spirometry, and impulse oscillometry performed...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28831602/plaque-accumulation-on-titanium-disks-with-different-surface-treatments-an-in-vivo-investigation
#8
Enrico Conserva, Luigi Generali, Alberto Bandieri, Francesco Cavani, Francesco Borghi, Ugo Consolo
Implants with rough surfaces are today widely used. It has been speculated that rough surfaces (Ra > 0.2 μm) provide a better "substrate" for retention and accumulation of plaque in terms of area, thickness and colony-forming unit that can eventually lead to peri mucositis and/or peri-implantitis. The aim of this investigation was to evaluate in vivo the plaque accumulation after 48 h on three implant surfaces with different treatments. For this investigation, we used 21 sterilized titanium disks, with a diameter of 8mm and a thickness of 3 mm, provided by the manufacturer: 7 with machined surface, as smooth control, 7 with HA grit sandblasted RBM surface and 7 with Ca(++) incorporated in titanium Xpeed surface...
August 22, 2017: Odontology
https://www.readbyqxmd.com/read/28797252/evaluation-of-community-based-continuous-distribution-of-long-lasting-insecticide-treated-nets-in-toamasina-ii-district-madagascar
#9
Celine Zegers de Beyl, Albert Kilian, Andrea Brown, Mohamad Sy-Ar, Richmond Ato Selby, Felicien Randriamanantenasoa, Jocelyn Ranaivosoa, Sixte Zigirumugabe, Lilia Gerberg, Megan Fotheringham, Matthew Lynch, Hannah Koenker
BACKGROUND: Continuous distribution of insecticide-treated nets (ITNs) is thought to be an effective mechanism to maintain ITN ownership and access between or in the absence of mass campaigns, but evidence is limited. A community-based ITN distribution pilot was implemented and evaluated in Toamasina II District, Madagascar, to assess this new channel for continuous ITN distribution. METHODS: Beginning 9 months after the December 2012 mass campaign, a community-based distribution pilot ran for an additional 9 months, from September 2013 to June 2014...
August 10, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28742394/assessment-of-proteomic-measures-across-serious-psychiatric-illness
#10
S Charles Schulz, Shauna Overgaard, David J Bond, Rajesh Kaldate
The diagnoses of serious psychiatric illnesses, such as schizophrenia, schizoaffective disorder, and bipolar disorder, rely on the subjective recall and interpretation of often overlapping symptoms, and are not based on the objective pathophysiology of the illnesses. The subjectivity of symptom reporting and interpretation contributes to the delay of accurate diagnoses and limits effective treatment of these illnesses. Proteomics, the study of the types and quantities of proteins an organism produces, may offer an objective biological approach to psychiatric diagnosis...
December 0: Clinical Schizophrenia & related Psychoses
https://www.readbyqxmd.com/read/28714031/effects-of-neuritin-on-the-differentiation-of-bone-marrow%C3%A2-derived-mesenchymal-stem-cells-into-neuron%C3%A2-like-cells
#11
Jingling Zhu, Pingping Meng, Qian Wang, Haiyan Wang, Jinli Zhang, Yuanyuan Li, Dongzheng Li, Xiaohua Tan, Lei Yang, Jin Huang
While the neurotrophic factor neuritin is known to be involved in neurodevelopment, the effects of this compound on cell differentiation remain unclear. The present study demonstrated that neuritin treatment induced the differentiation of rat bone marrow‑derived mesenchymal stem cells (rBM‑MSCs) into neuron‑like (NL) cells. For these analyses, rBM‑MSCs were incubated with 0.5 µg/ml neuritin for 24 h. Following induction, 27% of the rBM‑MSCs exhibited typical NL cell morphologies. Subsequently, NL cells were characterized by examining the expression of neuronal markers and by analysis of cell functions...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28684854/prospectively-isolated-mesenchymal-stem-stromal-cells-are-enriched-in-the-cd73-population-and-exhibit-efficacy-after-transplantation
#12
Eriko Grace Suto, Yo Mabuchi, Nobuharu Suzuki, Koji Suzuki, Yusuke Ogata, Miyu Taguchi, Takeshi Muneta, Ichiro Sekiya, Chihiro Akazawa
Mesenchymal stem/stromal cells (MSCs), which reside in the bone marrow (BM) and various other tissues, can self-renew and differentiate into mesenchymal lineages. Many groups have harvested rat MSCs (rMSCs) from rat BM (rBM) by using a flush-out procedure and have evaluated surface marker expression after long-term culture. However, MSCs gradually differentiate during expansion and exhibit altered proliferation rates, morphological features and functions in vitro. Variations in MSC isolation methods may alter the effectiveness of therapeutic applications...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28666316/two-year-test-retest-reliability-in-high-school-athletes-using-the-four-and-two-factor-impact-composite-structures-the-effects-of-learning-disorders-and-headache-migraine-treatment-history
#13
Benjamin L Brett, Gary S Solomon, Jennifer Hill, Philip Schatz
Objective: This study examined the test-retest reliability of the four- and two-factor structures (i.e., Memory and Speed) of ImPACT over a 2-year interval across multiple groups with premorbid conditions, including those with a history of special education or learning disorders (LD; n = 114), treatment history for headache/migraine (n = 81), and a control group (n = 792). Methods: Nine hundred and eighty seven high school athletes completed baseline testing using online ImPACT across a 2-year interval...
June 28, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28634933/3d-cell-culture-in-interpenetrating-networks-of-alginate-and-rbm-matrix
#14
Katrina Wisdom, Ovijit Chaudhuri
Altered tissue mechanical properties have been implicated in many key physiological and pathological processes. Hydrogel-based materials systems, made with native extracellular matrix (ECM) proteins, nonnative biopolymers, or synthetic polymers are often used to study these processes in vitro in 3D cell culture experiments. However, each of these materials systems present major limitations when used in mechanobiological studies. While native ECM-based hydrogels may enable good recapitulation of physiological behavior, the mechanics of these hydrogels are often manipulated by increasing or decreasing the protein concentration...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28562219/determination-of-the-lowest-energy-states-for-the-model-distribution-of-trained-restricted-boltzmann-machines-using-a-1000-qubit-d-wave-2x-quantum-computer
#15
Yaroslav Koshka, Dilina Perera, Spencer Hall, M A Novotny
The possibility of using a quantum computer D-Wave 2X with more than 1000 qubits to determine the global minimum of the energy landscape of trained restricted Boltzmann machines is investigated. In order to overcome the problem of limited interconnectivity in the D-Wave architecture, the proposed RBM embedding combines multiple qubits to represent a particular RBM unit. The results for the lowest-energy (the ground state) and some of the higher-energy states found by the D-Wave 2X were compared with those of the classical simulated annealing (SA) algorithm...
July 2017: Neural Computation
https://www.readbyqxmd.com/read/28526986/implementation-of-quality-by-design-for-formulation-of-rebamipide-gastro-retentive-tablet
#16
Jung-Myung Ha, Jeong-Woong Seo, Su-Hyeon Kim, Ju-Young Kim, Chun-Woong Park, Yun-Seok Rhee, Eun-Seok Park
The purpose of the present study was to develop a rebamipide (RBM) gastro-retentive (GR) tablet by implementing quality by design (QbD). RBM GR tablets were prepared using a sublimation method. Quality target product profile (QTPP) and critical quality attributes (CQAs) of the RBM GR tablets were defined according to the preliminary studies. Factors affecting the CQAs were prioritized using failure mode and effects analysis (FMEA). Design space and optimum formulation were established through a mixture design...
May 19, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28511697/immunohistology-and-remodeling-in-fatal-pediatric-and-adolescent-asthma
#17
Kristiina Malmström, Jouko Lohi, Antti Sajantila, Frode L Jahnsen, Merja Kajosaari, Seppo Sarna, Mika J Mäkelä
BACKGROUND: Thickening of reticular basement membrane, increased airway smooth muscle mass and eosinophilic inflammation are found in adult fatal asthma. At the present study the histopathology of fatal paediatric and adolescent asthma is evaluated. METHODS: Post-mortem lung autopsies from 12 fatal asthma cases and 8 non-asthmatic control subjects were examined. Thickness of reticular basement membrane (RBM) and percentage of airway smooth muscle (ASM%) mass area were measured and inflammatory cells were counted...
May 16, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28504950/graph-regularized-restricted-boltzmann-machine
#18
Dongdong Chen, Jiancheng Lv, Zhang Yi
The restricted Boltzmann machine (RBM) has received an increasing amount of interest in recent years. It determines good mapping weights that capture useful latent features in an unsupervised manner. The RBM and its generalizations have been successfully applied to a variety of image classification and speech recognition tasks. However, most of the existing RBM-based models disregard the preservation of the data manifold structure. In many real applications, the data generally reside on a low-dimensional manifold embedded in high-dimensional ambient space...
May 12, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28492548/inhibition-of-ptp1b-disrupts-cell-cell-adhesion-and-induces-anoikis-in-breast-epithelial-cells
#19
Bylgja Hilmarsdottir, Eirikur Briem, Skarphedinn Halldorsson, Jennifer Kricker, Sævar Ingthorsson, Sigrun Gustafsdottir, Gunhild M Mælandsmo, Magnus K Magnusson, Thorarinn Gudjonsson
Protein tyrosine phosphatase 1B (PTP1B) is a well-known inhibitor of insulin signaling pathways and inhibitors against PTP1B are being developed as promising drug candidates for treatment of obesity. PTP1B has also been linked to breast cancer both as a tumor suppressor and as an oncogene. Furthermore, PTP1B has been shown to be a regulator of cell adhesion and migration in normal and cancer cells. In this study, we analyzed the PTP1B expression in normal breast tissue, primary breast cells and the breast epithelial cell line D492...
May 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28466197/the-effect-of-ultrafast-fiber-laser-application-on-the-bond-strength-of-resin-cement-to-titanium
#20
Sabit Melih Ates, Fatih Mehmet Korkmaz, Ipek Satıroglu Caglar, Zeynep Yeşil Duymus, Sedanur Turgut, Elif Arslan Bagis
The purpose of this study was to investigate the effect of ultrafast fiber laser treatment on the bond strength between titanium and resin cement. A total of 60 pure titanium discs (15 mm × 2 mm) were divided into six test groups (n = 10) according to the surface treatment used: group (1) control, machining; group (2) grinding with a diamond bur; group (3) ultrafast fiber laser application; group (4) resorbable blast media (RBM) application; group (5) electro-erosion with copper; and group (6) sandblasting...
May 2, 2017: Lasers in Medical Science
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