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https://www.readbyqxmd.com/read/28634041/a-machine-learning-algorithm-toward-color-analysis-for-chronic-liver-disease-classification-employing-ultrasound-shear-wave-elastography
#1
Ilias Gatos, Stavros Tsantis, Stavros Spiliopoulos, Dimitris Karnabatidis, Ioannis Theotokas, Pavlos Zoumpoulis, Thanasis Loupas, John D Hazle, George C Kagadis
The purpose of the present study was to employ a computer-aided diagnosis system that classifies chronic liver disease (CLD) using ultrasound shear wave elastography (SWE) imaging, with a stiffness value-clustering and machine-learning algorithm. A clinical data set of 126 patients (56 healthy controls, 70 with CLD) was analyzed. First, an RGB-to-stiffness inverse mapping technique was employed. A five-cluster segmentation was then performed associating corresponding different-color regions with certain stiffness value ranges acquired from the SWE manufacturer-provided color bar...
June 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28555507/performance-measurement-and-target-setting-in-california-s-safety-net-health-systems
#2
Shirin Hemmat, Dean Schillinger, Courtney Lyles, Sara Ackerman, Gato Gourley, Eric Vittinghoff, Margaret Handley, Urmimala Sarkar
Health policies encourage implementing quality measurement with performance targets. The 2010-2015 California Medicaid waiver mandated quality measurement and reporting. In 2013, California safety net hospitals participating in the waiver set a voluntary performance target (the 90th percentile for Medicare preferred provider organization plans) for mammography screening and cholesterol control in diabetes. They did not reach the target, and the difference-in-differences analysis suggested that there was no difference for mammography ( P = ...
May 1, 2017: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/28536672/response-to-bile-salts-in-clinical-strains-of-acinetobacter-baumannii-lacking-the-adeabc-efflux-pump-virulence-associated-with-quorum-sensing
#3
Maria López, Lucia Blasco, Eva Gato, Astrid Perez, Laura Fernández-Garcia, Luis Martínez-Martinez, Felipe Fernández-Cuenca, Jesús Rodríguez-Baño, Alvaro Pascual, German Bou, Maria Tomás
Introduction:Acinetobacter baumannii is an opportunistic nosocomial pathogen associated with multiple infections. This pathogen usually colonizes (first stage of microbial infection) host tissues that are in contact with the external environment. As one of the sites of entry in human hosts is the gastrointestinal tract, the pathogen must be capable of tolerating bile salts. However, studies analyzing the molecular characteristics involved in the response to bile salts in clinical strains of A. baumannii are scarce...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28522261/-pulmonary-hamartoma-as-an-example-of-solitary-pulmonary-nodule
#4
M Tejero-Mas, C Gato-Núñez, N Rivera-Jiménez, F Buitrago-Ramírez, A Palmerín-Donoso
No abstract text is available yet for this article.
May 15, 2017: Semergen
https://www.readbyqxmd.com/read/28475054/unsupervised-word-spotting-in-historical-handwritten-document-images-using-document-oriented-local-features
#5
Konstantinos Zagoris, Ioannis Pratikakis, Basilis Gatos
Word spotting strategies employed in historical handwritten documents face many challenges due to variation in the writing style and intense degradation. In this paper, a new method that permits effective word spotting in handwritten documents is presented that it relies upon document-oriented local features which take into account information around representative keypoints as well a matching process that incorporates spatial context in a local proximity search without using any training data. Experimental results on four historical handwritten datasets for two different scenarios (segmentation-based and segmentation-free) using standard evaluation measures show the improved performance achieved by the proposed methodology...
May 3, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28472772/pd1-signal-transduction-pathways-in-t-cells
#6
REVIEW
Hugo Arasanz, Maria Gato-Cañas, Miren Zuazo, Maria Ibañez-Vea, Karine Breckpot, Grazyna Kochan, David Escors
The use of immune checkpoint inhibitors for the treatment of cancer is revolutionizing oncology. Amongst these therapeutic agents, antibodies that block PD-L1/PD1 interactions between cancer cells and T cells are demonstrating high efficacies and low toxicities. Despite all the recent advances, very little is yet known on the molecular intracellular signaling pathways regulated by either PD-L1 or PD1. Here we review the current knowledge on PD1-dependent intracellular signaling pathways, and the consequences of disrupting PD1 signal transduction...
April 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28449126/results-of-the-answer-trial-using-the-pulserider-for-the-treatment-of-broad-necked-bifurcation-aneurysms
#7
Alejandro M Spiotta, Colin P Derdeyn, Satoshi Tateshima, Jay Mocco, R Webster Crowley, Kenneth C Liu, Lee Jensen, Koji Ebersole, Alan Reeves, Demetrius K Lopes, Ricardo A Hanel, Eric Sauvageau, Gary Duckwiler, Adnan Siddiqui, Elad Levy, Ajit Puri, Lee Pride, Roberta Novakovic, M Imran Chaudry, Raymond D Turner, Aquilla S Turk
BACKGROUND: The safety and probable benefit of the PulseRider (Pulsar Vascular, Los Gatos, California) for the treatment of broad-necked, bifurcation aneurysms was studied in the context of the prospective, nonrandomized, single arm clinical trial-the Adjunctive Neurovascular Support of Wide-neck aneurysm Embolization and Reconstruction (ANSWER) Trial. OBJECTIVE: To present the results of the United States cases employing the PulseRider device as part of the ANSWER clinical trial...
April 25, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28432822/focal-liver-lesions-segmentation-and-classification-in-nonenhanced-t2-weighted-mri
#8
Ilias Gatos, Stavros Tsantis, Maria Karamesini, Stavros Spiliopoulos, Dimitris Karnabatidis, John D Hazle, George C Kagadis
PURPOSE: To automatically segment and classify focal liver lesions (FLLs) on nonenhanced T2-weighted magnetic resonance imaging (MRI) scans using a computer-aided diagnosis (CAD) algorithm. METHODS: 71 FLLs (30 benign lesions, 19 hepatocellular carcinomas, and 22 metastases) on T2-weighted MRI scans were delineated by the proposed CAD scheme. The FLL segmentation procedure involved wavelet multiscale analysis to extract accurate edge information and mean intensity values for consecutive edges computed using horizontal and vertical analysis that were fed into the subsequent fuzzy C-means algorithm for final FLL border extraction...
April 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/28340229/meaningful-use-in-the-safety-net-a-rapid-ethnography-of-patient-portal-implementation-at-five-community-health-centers-in-california
#9
Sara L Ackerman, Urmimala Sarkar, Lina Tieu, Margaret A Handley, Dean Schillinger, Kenneth Hahn, Mekhala Hoskote, Gato Gourley, Courtney Lyles
Objective: US health care institutions are implementing secure websites (patient portals) to achieve federal Meaningful Use (MU) certification. We sought to understand efforts to implement portals in "safety net" health care systems that provide services for low-income populations. Materials and Methods: Our rapid ethnography involved visits at 4 California safety net health systems and in-depth interviews at a fifth. Visits included interviews with clinicians and executives ( n  = 12), informal focus groups with front-line staff ( n  = 35), observations of patient portal sign-up procedures and clinic work, review of marketing materials and portal use data, and a brief survey ( n  = 45)...
March 15, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28288826/evaluation-of-acute-and-subacute-toxicity-of-hydroethanolic-extract-of-dolichandra-unguis-cati-l-leaves-in-rats
#10
Juliana Calil Brondani, Fernanda Ziegler Reginato, Evelyne da Silva Brum, Marina de Souza Vencato, Cibele Lima Lhamas, Carine Viana Silva, Maria Izabel Ugalde Marques da Rocha, Liliane de Freitas Bauermann, Melânia Palermo Manfron
ETHNOPHARMACOLOGICAL RELEVANCE: Dolichandra unguis-cati L. is a native climbing plant of Brazil, popularly known as "unha de gato". It has been traditionally used mainly as an antipyretic, anti-inflammatory and anti-tumor agent, yet little toxicological information is found in the literature. AIM OF THE STUDY: To identify the chemical composition of the hydroethanolic extract obtained from the leaves of Dolichandra uniguis-cati and to evaluate the acute and subacute toxicity in male and female rats, in order to assess the safety profile of this plant...
March 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28283906/dual-effect-of-chloramphenicol-peptides-on-ribosome-inhibition
#11
Anthony Bougas, Ioannis A Vlachogiannis, Dimitrios Gatos, Stefan Arenz, George P Dinos
Chloramphenicol peptides were recently established as useful tools for probing nascent polypeptide chain interaction with the ribosome, either biochemically, or structurally. Here, we present a new 10mer chloramphenicol peptide, which exerts a dual inhibition effect on the ribosome function affecting two distinct areas of the ribosome, namely the peptidyl transferase center and the polypeptide exit tunnel. According to our data, the chloramphenicol peptide bound on the chloramphenicol binding site inhibits the formation of both acetyl-phenylalanine-puromycin and acetyl-lysine-puromycin, showing, however, a decreased peptidyl transferase inhibition compared to chloramphenicol-mediated inhibition per se...
March 10, 2017: Amino Acids
https://www.readbyqxmd.com/read/28229833/portuguese-medical-students-knowledge-and-attitudes-towards-homosexuality
#12
Lucas Lopes, Jorge Gato, Manuel Esteves
INTRODUCTION: Lesbian, gay, bisexual and transgender people still face discrimination in healthcare environments and physicians often report lack of knowledge on this population's specific healthcare needs. In fact, recommendations have been put forward to include lesbian, gay, bisexual and transgender health in medical curricula. This study aimed to explore factors associated with medical students' knowledge and attitudes towards homosexuality in different years of the medical course...
November 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28216640/the-ubiquitin-ligase-cullin5-socs2-regulates-ndr1-stk38-stability-and-nf-%C3%AE%C2%BAb-transactivation
#13
Indranil Paul, Tanveer S Batth, Diego Iglesias-Gato, Amna Al-Araimi, Ibrahim Al-Haddabi, Amira Alkharusi, Gunnar Norstedt, Jesper V Olsen, Fahad Zadjali, Amilcar Flores-Morales
SOCS2 is a pleiotropic E3 ligase. Its deficiency is associated with gigantism and organismal lethality upon inflammatory challenge. However, mechanistic understanding of SOCS2 function is dismal due to our unawareness of its protein substrates. We performed a mass spectrometry based proteomic profiling upon SOCS2 depletion and yield quantitative data for ~4200 proteins. Through this screen we identify a novel target of SOCS2, the serine-threonine kinase NDR1. Over-expression of SOCS2 accelerates turnover, while its knockdown stabilizes, endogenous NDR1 protein...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28188571/implementation-science-workshop-barriers-and-facilitators-to-increasing-mammography-screening-rates-in-california-s-public-hospitals
#14
Cassidy Clarity, Gato Gourley, Courtney Lyles, Sara Ackerman, Margaret A Handley, Dean Schillinger, Urmimala Sarkar, Joseph Conigliaro
No abstract text is available yet for this article.
June 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28181387/assessment-of-the-short-term-toxicity-of-tio2-nanofiber-in-sprague-dawley-rats
#15
Worlanyo E Gato, Daniel A Hunter, Ian C Byrd, Christopher A Mays, Wilson Yau, Ji Wu
Synthetic nanomaterials have many unique chemical and physical properties, mainly due to their high specific surface area and quantum confinement effect. Specifically, titanium dioxide (TiO2 ) nanomaterial has high stability, anticorrosive, and photocatalytic properties. However, there are concerns over adverse biological effects resulting from bioeffects. This study was to investigate adverse effects associated with acute ingestion of TiO2 nanofiber (TDNF). TDNF was fabricated via electrospinning method, followed by dissolution in water...
June 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28149833/assessment-of-the-link-between-in-utero-exposure-to-2-aminoanthracene-2aa-and-type-1-diabetes-t1d
#16
Christopher A Mays, Daniel A Hunter, Wilson Yau, Worlanyo E Gato
BACKGROUND: A recent diabetes report revealed an increased incidence in diabetes including type 1-diabetes (T1D). The increase in the numbers of T1D incidences are thought to be related to environmental reasons such as the exposure to environmental chemicals including arylamine 2-aminoanthracene (2AA). T1D is an autoimmune disease of the pancreatic islet in which insulin-producing beta cells are destroyed by auto-reactive T-cells and monocytic cells. METHODS: The purpose of this study is to examine the extent to which 2AA exposure contributes to T1D...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/28048644/tu-h-campus-iep3-05-computer-aided-diagnosis-employing-automatically-segmented-color-specific-regions-in-ultrasound-shear-wave-elastography-for-the-assessment-of-chronic-liver-disease
#17
I Gatos, S Tsantis, G C Kagadis
PURPOSE: To assess the role of an automated Computer Aided Diagnosis (CAD) system in differentiation of Healthy Subjects to Chronic Liver Disease (CLD) Patients in terms of liver fibrosis (F0-F4), using Ultrasound Shear Wave Elastography (SWE). METHODS: Clinical Dataset consisted of 125 subjects, 55 Healthy (F0) whom condition was validated with Normal Biochemical Markers and clear Clinical History, and 70 with CLD (F1-F4) whom condition was validated with Liver Biopsy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27932646/genome-sequence-of-airborne-acinetobacter-sp-strain-5-2ac02-in-the-hospital-environment-close-to-the-species-of-acinetobacter-towneri
#18
Beathriz G V Barbosa, Laura Fernandez-García, Eva Gato, Maria López, Lucia Blasco, Robson Souza Leão, Rodolpho M Albano, Begoña Fernández, Felipe-Fernández Cuenca, Álvaro Pascual, German Bou, Elizabeth A Marques, María Tomás
Acinetobacter spp. are found in 53% of air colonization samples from the hospital environment. In this work, we sequenced all the genome of airborne Acinetobacter sp. strain 5-2Ac02. We found important features at the genomic level in regards to the rhizome. By phylogenetic analysis, A. towneri was the species most closely related to Acinetobacter sp. 5-2Ac02.
December 8, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27855685/understanding-the-barriers-to-successful-adoption-and-use-of-a-mobile-health-information-system-in-a-community-health-center-in-s%C3%A3-o-paulo-brazil-a-cohort-study
#19
Jayant V Rajan, Juliana Moura, Gato Gourley, Karina Kiso, Alexandre Sizilio, Ana Maria Cortez, Lee W Riley, Maria Amelia Veras, Urmimala Sarkar
BACKGROUND: Mobile technology to support community health has surged in popularity, yet few studies have systematically examined usability of mobile platforms for this setting. METHODS: We conducted a mixed-methods study of 14 community healthcare workers at a public healthcare clinic in São Paulo, Brazil. We held focus groups with community healthcare workers to elicit their ideas about a mobile health application and used this input to build a prototype app. A pre-use test survey was administered to all participants, who subsequently use-tested the app on three different devices (iPhone, iPad mini, iPad Air)...
November 17, 2016: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/27795287/genomic-evolution-of-two-acinetobacter-baumannii-clinical-strains-from-st-2-clones-isolated-in-2000-and-2010-st-2_clon_2000-and-st-2_clon_2010
#20
M López, A Rueda, J P Florido, L Blasco, E Gato, L Fernández-García, L Martínez-Martínez, F Fernández-Cuenca, J Pachón, J M Cisneros, J Garnacho-Montero, J Vila, J Rodríguez-Baño, A Pascual, G Bou, M Tomás
Acinetobacter baumannii is a successful nosocomial pathogen due to its ability to persist in hospital environments by acquiring mobile elements such as transposons, plasmids, and phages. In this study, we compared two genomes of A. baumannii clinical strains isolated in 2000 (ST-2_clon_2000) and 2010 (ST-2_clon_2010) from GenBank project PRJNA308422.
October 20, 2016: Genome Announcements
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