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https://www.readbyqxmd.com/read/28336392/diagnostic-laboratories-in-asia-pacific-region-investigation-on-quality-characteristics-and-time-of-reporting
#1
Tony C Badrick, Anton Gutscher, Nakako Sakamoto, Daniel Chin
This is the result of a Survey of various aspects of quality, cost and speed in a large sample of diagnostic laboratories in the Asia Pacific region. It is the first of its type to be published and represents a snapshot of the current performance in a large number of diagnostic laboratories in a broad range of countries in the Asia Pacific region. This demonstrates that there are common issues facing all the laboratories surveyed but also common solutions using a Quality Systems approach which involves Accreditation, Customer responsiveness, greater use of IT, automation and Lean principles...
March 20, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28333641/droplet-size-aware-high-level-synthesis-for-micro-electrode-dot-array-digital-microfluidic-biochips
#2
Zipeng Li, Kelvin Yi-Tse Lai, Po-Hsien Yu, Krishnendu Chakrabarty, Tsung-Yi Ho, Chen-Yi Lee
A digital microfluidic biochip (DMFB) is an attractive technology platform for automating laboratory procedures in biochemistry. In recent years, DMFBs based on a microelectrode-dot-array (MEDA) architecture have been demonstrated. However, due to the inherent differences between today's DMFBs and MEDA, existing synthesis solutions for biochemistry mapping cannot be utilized for MEDA biochips. We present the first synthesis approach that can be used for MEDA biochips. We first present a general analytical model for droplet velocity and validate it experimentally using a fabricated MEDA biochip...
March 21, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28333189/fully-automated-disc-diffusion-for-rapid-antibiotic-susceptibility-test-results-a-proof-of-principle-study
#3
Michael Hombach, Marion Jetter, Nicolas Blöchliger, Natalia Kolesnik-Goldmann, Erik C Böttger
Background: Antibiotic resistance poses a significant threat to patients suffering from infectious diseases. Early readings of antibiotic susceptibility test (AST) results could be of critical importance to ensure adequate treatment. Disc diffusion is a well-standardized, established and cost-efficient AST procedure; however, its use in the clinical laboratory is hampered by the many manual steps involved, and an incubation time of 16-18 h, which is required to achieve reliable test results...
February 17, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28331530/kras-detection-on-archival-cytological-smears-by-the-novel-fully-automated-polymerase-chain-reaction-based-idylla-mutation-test
#4
Caterina De Luca, Elena Vigliar, Melania d'Anna, Pasquale Pisapia, Claudio Bellevicine, Umberto Malapelle, Giancarlo Troncone
BACKGROUND: Molecular techniques are relevant to modern cytopathology, but their implementation is difficult without molecular expertise and infrastructure. The assessment of KRAS mutational status on cytological preparations may be useful either to refine uncertain diagnoses on pancreatic aspirates or to yield predictive information to plan targeted treatment of metastatic colorectal cancer (mCRC). The novel test Idylla™ enables fully automated KRAS genotyping in approximately 2 h, even in less experienced hands...
2017: CytoJournal
https://www.readbyqxmd.com/read/28330865/an-automated-smartphone-based-diagnostic-assay-for-point-of-care-semen-analysis
#5
Manoj Kumar Kanakasabapathy, Magesh Sadasivam, Anupriya Singh, Collin Preston, Prudhvi Thirumalaraju, Maanasa Venkataraman, Charles L Bormann, Mohamed Shehata Draz, John C Petrozza, Hadi Shafiee
Male infertility affects up to 12% of the world's male population and is linked to various environmental and medical conditions. Manual microscope-based testing and computer-assisted semen analysis (CASA) are the current standard methods to diagnose male infertility; however, these methods are labor-intensive, expensive, and laboratory-based. Cultural and socially dominated stigma against male infertility testing hinders a large number of men from getting tested for infertility, especially in resource-limited African countries...
March 22, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28330825/streamlining-workflow-and-automation-to-accelerate-laboratory-scale-protein-production
#6
REVIEW
Jennifer Konczal, Christopher H Gray
Protein production facilities are often required to produce diverse arrays of proteins for demanding methodologies including crystallography, NMR, ITC and other reagent intensive techniques. It is common for these teams to find themselves a bottleneck in the pipeline of ambitious projects. This pressure to deliver has resulted in the evolution of many novel methods to increase capacity and throughput at all stages in the pipeline for generation of recombinant proteins. This review aims to describe current and emerging options to accelerate the success of protein production in Escherichia coli...
March 18, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28330138/vdap-gui-a-user-friendly-pipeline-for-variant-discovery-and-annotation-of-raw-next-generation-sequencing-data
#7
Ramesh Menon, Namrata V Patel, Amitbikram Mohapatra, Chaitanya G Joshi
Even though next-generation sequencing (NGS) has become an invaluable tool in molecular biology, several laboratories with NGS facilities lack trained Bioinformaticians for data analysis. Here, focusing on the variant detection application of NGS analysis, we have developed a fully automated pipeline, namely Variant Discovery and Annotation Tool-Graphical User Interface (VDAP-GUI), which detects and annotates single nucleotide polymorphisms and insertions/deletions from raw sequence reads. VDAP-GUI consolidates several proven methods in each step such as quality control, trimming, mapping, variant detection and annotation...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28325018/imquant-an-image-based-fluorescence-reader-for-quantitative-lateral-flow-immunoassays
#8
Kaushik Basak Chowdhury, Jayaraj Joseph, Jayaraman Kiruthi Vasan, Mohanasankar Sivaprakasam
Fluorescence immunoassays (FIA) have strong potential in enabling rapid quantitative immunological testing at point of care. Existing state of the art instruments employ laser scanning of FIA test kits, which require the use of electromechanical systems, making the instrument bulky, heavy and less reliable in the long term. There is a growing need for an extremely compact and reliable, motion-free, automated reader for accurate quantification of immunoassays. Here, we present ImQuant, an image based FIA reader with integrated monochromatic excitation source, optical filtering and real time image capture, assisted with an intuitive graphical user interface...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324789/evaluation-of-the-abbott-realtime-hcv-genotype-ii-plus-ruo-plus-assay-with-reference-to-core-and-ns5b-sequencing
#9
Melanie A Mallory, Danijela Lucic, Mark T W Ebbert, Gavin A Cloherty, Dan Toolsie, David R Hillyard
BACKGROUND: HCV genotyping remains a critical tool for guiding initiation of therapy and selecting the most appropriate treatment regimen. Current commercial genotyping assays may have difficulty identifying 1a, 1b and genotype 6. OBJECTIVE: To evaluate the concordance for identifying 1a, 1b, and genotype 6 between two methods: the PLUS assay and core/NS5B sequencing. STUDY DESIGN: This study included 236 plasma and serum samples previously genotyped by core/NS5B sequencing...
March 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28322712/implementation-and-initial-analysis-of-a-laboratory-based-weekly-biosurveillance-system-provence-alpes-c%C3%A3-te-d-azur-france
#10
Michael Huart, Gabriel Bedubourg, Cédric Abat, Philippe Colson, Jean Marc Rolain, Hervé Chaudet, Pierre Edouard Fournier, Didier Raoult, Xavier Deparis
We describe the implementation of an automated infectious disease surveillance system that uses data collected from 210 microbiologic laboratories throughout the Provence-Alpes-Côte d'Azur region in France. Each week, these facilities report bacterial species that have been isolated from patients in their area. An alarm is triggered whenever the case count for a bacterial species infection exceeds 2 SDs of the historical mean for that species at the participating laboratory. At its inception in July 2013, the system monitored 611 bacterial species...
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28322517/materials-for-microfluidic-immunoassays-a-review
#11
REVIEW
Lei Mou, Xingyu Jiang
Conventional immunoassays suffer from at least one of these following limitations: long processing time, high costs, poor user-friendliness, technical complexity, poor sensitivity and specificity. Microfluidics, a technology characterized by the engineered manipulation of fluids in channels with characteristic lengthscale of tens of micrometers, has shown considerable promise for improving immunoassays that could overcome these limitations in medical diagnostics and biology research. The combination of microfluidics and immunoassay can detect biomarkers with faster assay time, reduced volumes of reagents, lower power requirements, and higher levels of integration and automation compared to traditional approaches...
March 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28321506/standardizing-25-hydroxyvitamin-d-data-from-the-hunmen-cohort
#12
E Jakab, E Kalina, Z Petho, Z Pap, A Balogh, W B Grant, H P Bhattoa
Standardization of 25-hydroxyvitamin D (25OHD) values is still a challenge. We propose standardization by correction of the measured 25OHD values using the linear regression bias from the National Institute of Standards and Technology (NIST) 'total' target values reported by Vitamin D External Quality Assessment Scheme (DEQAS). Our approach could perhaps be a practical solution to the anomaly surrounding non-standardized 25OHD values. INTRODUCTION: Standardization of 25OHD values is still a challenge...
March 20, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28321418/ana-iif-automation-moving-towards-harmonization-results-of-a-multicenter-study
#13
Stefanie Van den Bremt, Sofie Schouwers, Marjan Van Blerk, Lieve Van Hoovels
Background. Our study aimed to investigate whether the introduction of automated anti-nuclear antibody (ANA) indirect immunofluorescence (IIF) analysis decreases the interlaboratory variability of ANA titer results. Method. Three serum samples were sent to 10 laboratories using the QUANTA-Lyser® in combination with the NOVA View®. Each laboratory performed the ANA IIF analysis 10x in 1 run and 1x in 10 different runs and determined the endpoint titer by dilution. One of the three samples had been sent in 2012, before the era of ANA IIF automation, by the Belgian National External Quality Assessment (EQA) Scheme...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28315225/the-use-of-a-semi-automated-system-to-measure-mouse-natural-killer-t-nkt-cell-activation-by-lipid-loaded-dendritic-cells
#14
Ashfaq Ghumra, Marcos Alcocer
Cell-based assays are widely used in all aspects of research ranging from understanding basic biological function to identifying compounds for disease intervention. Immortalized cell lines have been ideal components of these assays due to the low cost of growth, easy maintenance, and the ability to obtain homogenous cell populations. Like other molecular assays, cell-based systems have been automated to reduce experimental error. Complex lipids are now recognized as important components of the allergic response, the study of the interaction between NKTs and lipid-activated DCs opens a new perspective into the intrinsic allergenicity of proteins...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28302536/rna-chromogenic-in-situ-hybridization-assay-with-clinical-automated-platform-is-a-sensitive-method-in-detecting-high-risk-human-papillomavirus-in-squamous-cell-carcinoma
#15
Javier E Mendez-Pena, Peter M Sadow, Vania Nose, Mai P Hoang
Detection of active human papillomavirus (HPV) is clinically important, as its presence has been shown to correlate with favorable clinical outcomes and better response to treatment in oropharyngeal squamous cell carcinomas (SCC). Using a clinical automated platform, we compared the performance of commercially available HPV DNA and RNA in situ hybridization (ISH) probes in archival tissues of 57 SCC. Importantly, a clinical automated platform gives 1) consistent and reproducible results for HPV ISH and 2) better standardization across clinical laboratories...
March 13, 2017: Human Pathology
https://www.readbyqxmd.com/read/28300421/the-state-of-cloud-based-biospecimen-and-biobank-data-management-tools
#16
Shonali Paul, Aditi Gade, Sumani Mallipeddi
Biobanks are critical for collecting and managing high-quality biospecimens from donors with appropriate clinical annotation. The high-quality human biospecimens and associated data are required to better understand disease processes. Therefore, biobanks have become an important and essential resource for healthcare research and drug discovery. However, collecting and managing huge volumes of data (biospecimens and associated clinical data) necessitate that biobanks use appropriate data management solutions that can keep pace with the ever-changing requirements of research...
March 16, 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28300202/thermoalign-a-genome-aware-primer-design-tool-for-tiled-amplicon-resequencing
#17
Felix Francis, Michael D Dumas, Randall J Wisser
Isolating and sequencing specific regions in a genome is a cornerstone of molecular biology. This has been facilitated by computationally encoding the thermodynamics of DNA hybridization for automated design of hybridization and priming oligonucleotides. However, the repetitive composition of genomes challenges the identification of target-specific oligonucleotides, which limits genetics and genomics research on many species. Here, a tool called ThermoAlign was developed that ensures the design of target-specific primer pairs for DNA amplification...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299682/microfluidic-arrayed-lab-on-a-chip-for-electrochemical-capacitive-detection-of-dna-hybridization-events
#18
Hadar Ben-Yoav, Peter H Dykstra, William E Bentley, Reza Ghodssi
A microfluidic electrochemical lab-on-a-chip (LOC) device for DNA hybridization detection has been developed. The device comprises a 3 × 3 array of microelectrodes integrated with a dual layer microfluidic valved manipulation system that provides controlled and automated capabilities for high throughput analysis of microliter volume samples. The surface of the microelectrodes is functionalized with single-stranded DNA (ssDNA) probes which enable specific detection of complementary ssDNA targets. These targets are detected by a capacitive technique which measures dielectric variation at the microelectrode-electrolyte interface due to DNA hybridization events...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28295488/identification-of-contaminant-interferences-which-cause-positive-urine-reagent-test-strip-reactions-in-a-cage-setting-for-the-laboratory-housed-nonhuman-primate-beagle-dog-and-sprague-dawley-rat
#19
William D Siska, Dennis J Meyer, Albert E Schultze, Catherine Brandoff
BACKGROUND: A high incidence of unexplained positive urine reagent test strip reactions was observed in healthy, untreated laboratory-housed nonhuman primates, Beagle dogs, and Sprague-Dawley rats. Exposure of urine to cage pan contaminants was the suspected cause of the positive reactions. OBJECTIVES: The objective of this study was to identify cage pan contaminants which could cause positive reagent test strip reactions. METHODS: Contaminated urine was simulated by exposing water samples to cage pan contaminants, including cleaning solutions, feces from nonhuman primates, Beagle dogs, and Sprague-Dawley rats, certified laboratory animal diets, and dietary enrichments (vegetables, fruits, and food treats)...
March 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28288443/the-effects-of-intranasal-oxytocin-on-smoothie-intake-cortisol-and-attentional-bias-in-anorexia-nervosa
#20
Jenni Leppanen, Valentina Cardi, Kah Wee Ng, Yannis Paloyelis, Daniel Stein, Kate Tchanturia, Janet Treasure
BACKGROUND: Anorexia nervosa (AN) is characterised by severe malnutrition as well as intense fear and anxiety around food and eating with associated anomalies in information processing. Previous studies have found that the neuropeptide, oxytocin, can influence eating behaviour, lower the neurobiological stress response and anxiety among clinical populations, and alter attentional processing of food and eating related images in AN. METHODOLOGY: Thirty adult women with AN and twenty-nine healthy comparison (HC) women took part in the current study...
February 7, 2017: Psychoneuroendocrinology
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