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https://www.readbyqxmd.com/read/28633418/detecting-and-removing-multiplicative-spatial-bias-in-high-throughput-screening-technologies
#1
Iurie Caraus, Bogdan Mazoure, Robert Nadon, Vladimir Makarenkov
Motivation: Considerable attention has been paid recently to improve data quality in high-throughput screening (HTS) and high-content screening (HCS) technologies widely used in drug development and chemical toxicity research. However, several environmentally- and procedurally-induced spatial biases in these screens decrease measurement accuracy, leading to increased numbers of false positives and false negatives in hit selection. Although effective bias correction methods and software have been developed over the past decades, almost all of these tools have been designed to reduce the effect of additive bias only...
June 15, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28632767/how-is-indonesia-coping-with-its-epidemic-of-chronic-noncommunicable-diseases-a-systematic-review-with-meta-analysis
#2
Julia Schröders, Stig Wall, Mohammad Hakimi, Fatwa Sari Tetra Dewi, Lars Weinehall, Mark Nichter, Maria Nilsson, Hari Kusnanto, Ekowati Rahajeng, Nawi Ng
BACKGROUND: Chronic noncommunicable diseases (NCDs) have emerged as a huge global health problem in low- and middle-income countries. The magnitude of the rise of NCDs is particularly visible in Southeast Asia where limited resources have been used to address this rising epidemic, as in the case of Indonesia. Robust evidence to measure growing NCD-related burdens at national and local levels and to aid national discussion on social determinants of health and intra-country inequalities is needed...
2017: PloS One
https://www.readbyqxmd.com/read/28628525/assessing-sensitivity-and-specificity-of-the-manchester-triage-system-in-the-evaluation-of-acute-coronary-syndrome-in-adult-patients-in-emergency-care-a-systematic-review
#3
Fernanda Ayache Nishi, Flávia de Oliveira Motta Maia, Itamar de Souza Santos, Dina de Almeida Lopes Monteiro da Cruz
BACKGROUND: Triage is the first assessment and sorting process used to prioritize patients arriving in the emergency department (ED). As a triage tool, the Manchester Triage System (MTS) must have a high sensitivity to minimize the occurrence of under-triage, but must not compromise specificity to avoid the occurrence of overtriage. Sensitivity and specificity of the MTS can be calculated using the frequency of appropriately assigned clinical priority levels for patients presenting to the ED...
June 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28625228/warnings-as-a-directive-front-of-pack-nutrition-labelling-scheme-comparison-with-the-guideline-daily-amount-and-traffic-light-systems
#4
Alejandra Arrúa, Leandro Machín, María Rosa Curutchet, Joseline Martínez, Lucía Antúnez, Florencia Alcaire, Ana Giménez, Gastón Ares
OBJECTIVE: Warnings have recently been proposed as a new type of directive front-of-pack (FOP) nutrition labelling scheme to flag products with high content of key nutrients. In the present work, this system was compared with the two most common FOP nutrition labelling schemes (Guideline Daily Amounts (GDA) and traffic-light system) in terms of goal-directed attention, influence on perceived healthfulness and ability to differentiate between products. Design/Setting/Subjects Goal-directed attention to FOP labels was evaluated using a visual search task in which participants were presented with labels on a computer screen and were asked to indicate whether labels with high sodium content were present or absent...
June 19, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28623180/behavioral-screening-of-the-lopac-1280-library-in-zebrafish-embryos
#5
Sara M Vliet, Trina C Ho, David C Volz
Spontaneous activity represents an early, primitive form of motor activity within zebrafish embryos, providing a potential readout for identification of neuroactive compounds. However, despite use as an endpoint in chemical screens around the world, the predictive power and limitations of assays relying on spontaneous activity remain unclear. Using an improved high-content screening assay that increased throughput from 384 to 3072 wells per week, we screened a well-characterized library of 1280 pharmacologically active compounds (LOPAC(1280)) - 612 of which target neurotransmission - to identify which targets are detected using spontaneous activity as a readout...
June 13, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28622455/intestinal-metabolites-are-profoundly-altered-in-the-context-of-hla-b27-expression-and-functionally-modulate-disease-in-a-rat-model-of-spondyloarthropathy
#6
Mark Asquith, Sean Davin, Patrick Stauffer, Claire Michell, Cathleen Janowitz, Phoebe Lin, Joe Ensign-Lewis, Jason M Kinchen, Dennis R Koop, Jim Rosenbaum
Objective HLA-B27 associated spondyloarthropathies are associated with an altered intestinal microbiota and bowel inflammation. Therefore, we sought to identify B27-dependent changes in both host and microbial metabolites in the HLA-B27/β2m rat and whether microbiota-derived metabolites could impact disease in this major model of spondyloarthropathy. Methods Cecal contents were collected from 6wk (pre-diseased) and 16wk (diseased) Fischer 344 HLA-B27/β2m transgenic rats and WT controls. Metabolomic profiling was performed by high-throughput gas- and liquid-chromatography-based mass spectrometry...
June 16, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28618188/real-time-viability-and-apoptosis-kinetic-detection-method-of-3d-multicellular-tumor-spheroids-using-the-celigo-image-cytometer
#7
Sarah Kessel, Scott Cribbes, Surekha Bonasu, William Rice, Jean Qiu, Leo Li-Ying Chan
The development of three-dimensional (3D) multicellular tumor spheroid models for cancer drug discovery research has increased in the recent years. The use of 3D tumor spheroid models may be more representative of the complex in vivo tumor microenvironments in comparison to two-dimensional (2D) assays. Currently, viability of 3D multicellular tumor spheroids has been commonly measured on standard plate-readers using metabolic reagents such as CellTiter-Glo® for end point analysis. Alternatively, high content image cytometers have been used to measure drug effects on spheroid size and viability...
June 15, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28616421/cystic-fibrosis-prevalence-among-a-group-of-high-risk-children-in-the-main-referral-children-hospital-in-iran
#8
Mohammad Reza Modaresi, Jamal Faghinia, Mohsen Reisi, Majid Keivanfar, Shiva Navaie, Javad Seyyedi, Faride Baharzade
BACKGROUND: Knowledge about cystic fibrosis (CF) in Iran is very limited. The objective of this study was to determine the prevalence of CF among a group of high-risk children with suggestive clinical features in the main referral hospital in Iran. MATERIALS AND METHODS: This study children consisted of 505 patients who had presented with one or more of the following symptoms: chronic or recurrent respiratory symptoms, gastrointestinal symptoms as rectal prolapse, steatorrhea, hepatobiliary disease as prolonged jaundice, failure to thrive, hyperglycemia and glycosuria, hypochloremic metabolic alkalosis, hypoprothrombinemia, anemia or edema, and positive family history of CF...
2017: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/28615943/the-use-of-functional-epirubicin-liposomes-to-induce-programmed-death-in-refractory-breast-cancer
#9
Lei Liu, Li-Min Mu, Yan Yan, Jia-Shuan Wu, Ying-Jie Hu, Ying-Zi Bu, Jing-Ying Zhang, Rui Liu, Xue-Qi Li, Wan-Liang Lu
Currently, chemotherapy is less efficient in controlling the continued development of breast cancer because it cannot eliminate extrinsic and intrinsic refractory cancers. In this study, mitochondria were modified by functional epirubicin liposomes to eliminate refractory cancers through initiation of an apoptosis cascade. The efficacy and mechanism of epirubicin liposomes were investigated on human breast cancer cells in vitro and in vivo using flow cytometry, confocal microscopy, high-content screening system, in vivo imaging system, and tumor inhibition in mice...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28612291/-f-18-av-1451-binding-correlates-with-postmortem-neurofibrillary-tangle-braak-staging
#10
Marta Marquié, Michael Siao Tick Chong, Alejandro Antón-Fernández, Eline E Verwer, Nil Sáez-Calveras, Avery C Meltzer, Prianca Ramanan, Ana C Amaral, Jose Gonzalez, Marc D Normandin, Matthew P Frosch, Teresa Gómez-Isla
[F-18]-AV-1451, a PET tracer specifically developed to detect brain neurofibrillary tau pathology, has the potential to facilitate accurate diagnosis of Alzheimer's disease (AD), staging of brain tau burden and monitoring disease progression. Recent PET studies show that patients with mild cognitive impairment and AD dementia exhibit significantly higher in vivo [F-18]-AV-1451 retention than cognitively normal controls. Importantly, PET patterns of [F-18]-AV-1451 correlate well with disease severity and seem to match the predicted topographic Braak staging of neurofibrillary tangles (NFTs) in AD, although this awaits confirmation...
June 13, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28611339/policy-of-screening-for-colorectal-cancer-in-saudi-arabia-a-prospective-analysis
#11
Abdulrahman A Aljumah, Abdulrahman M Aljebreen
Colorectal cancer (CRC) is one of the most common cancers worldwide. Several policies of CRC screening are available in different countries. The idea of screening is to identify patients at risk by detection of precancerous and small cancers early enough before they become advanced. In Saudi Arabia (SA), there is no countrywide policy for CRC screening despite the increasing incidence of the disease. Screening for CRC is a multidisciplinary approach that requires education programs, substantial financial support, several logistic measures, and predetermined resources before implementing such a program...
May 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28609476/effective-strategies-to-motivate-nursing-home-residents-in-oral-care-and-to-prevent-or-reduce-responsive-behaviors-to-oral-care-a-systematic-review
#12
Matthias Hoben, Angelle Kent, Nadia Kobagi, Kha Tu Huynh, Alix Clarke, Minn N Yoon
BACKGROUND: Poor oral health has been a persistent problem in nursing home residents for decades, with severe consequences for residents and the health care system. Two major barriers to providing appropriate oral care are residents' responsive behaviors to oral care and residents' lack of ability or motivation to perform oral care on their own. OBJECTIVES: To evaluate the effectiveness of strategies that nursing home care providers can apply to either prevent/overcome residents' responsive behaviors to oral care, or enable/motivate residents to perform their own oral care...
2017: PloS One
https://www.readbyqxmd.com/read/28609451/anti-cancer-agents-in-saudi-arabian-herbals-revealed-by-automated-high-content-imaging
#13
Dina Hajjar, Stephan Kremb, Salim Sioud, Abdul-Hamid Emwas, Christian R Voolstra, Timothy Ravasi
Natural products have been used for medical applications since ancient times. Commonly, natural products are structurally complex chemical compounds that efficiently interact with their biological targets, making them useful drug candidates in cancer therapy. Here, we used cell-based phenotypic profiling and image-based high-content screening to study the mode of action and potential cellular targets of plants historically used in Saudi Arabia's traditional medicine. We compared the cytological profiles of fractions taken from Juniperus phoenicea (Arar), Anastatica hierochuntica (Kaff Maryam), and Citrullus colocynthis (Hanzal) with a set of reference compounds with established modes of action...
2017: PloS One
https://www.readbyqxmd.com/read/28608629/enantioselective-cytotoxicity-of-zns-mn-quantum-dots-in-a549-cells
#14
V A Kuznetsova, A K Visheratina, A Ryan, I V Martynenko, A Loudon, C M Maguire, F Purcell-Milton, A O Orlova, A V Baranov, A V Fedorov, A Prina-Mello, Y Volkov, Y K Gun'Ko
Chirality strongly influences many biological properties of materials, such as cell accumulation, enzymatic activity, and toxicity. In the past decade, it has been shown that quantum dots (QDs), fluorescent semiconductor nanoparticles with unique optical properties, can demonstrate optical activity due to chiral ligands bound on their surface. Optically active QDs could find potential applications in biomedical research, therapy, and diagnostics. Consequently, it is very important to investigate the interaction of QDs capped with chiral ligands with living cells...
June 13, 2017: Chirality
https://www.readbyqxmd.com/read/28607051/computationally-optimized-deimmunization-libraries-yield-highly-mutated-enzymes-with-low-immunogenicity-and-enhanced-activity
#15
Regina S Salvat, Deeptak Verma, Andrew S Parker, Jack R Kirsch, Seth A Brooks, Chris Bailey-Kellogg, Karl E Griswold
Therapeutic proteins of wide-ranging function hold great promise for treating disease, but immune surveillance of these macromolecules can drive an antidrug immune response that compromises efficacy and even undermines safety. To eliminate widespread T-cell epitopes in any biotherapeutic and thereby mitigate this key source of detrimental immune recognition, we developed a Pareto optimal deimmunization library design algorithm that optimizes protein libraries to account for the simultaneous effects of combinations of mutations on both molecular function and epitope content...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28605976/anti-mutagenic-potential-of-algal-extracts-on-chromosomal-aberrations-in-allium-cepa-l
#16
Hoda Anwer Mansour, Hala Mahfouz, Nesma Maher
In the present study, sodium azide (SA) toxicity and the anti-mutagenic effects of different algal extracts at 0.1% and 0.2% concentrations were studied on the mitotic index (MI), chromosomal and nuclear aberrations using Allium cepa L. root assay. Moreover, phytochemical screening of photosynthetic pigments, antioxidants compounds, total antioxidant, DPPH scavenging activity, polysaccharides, and phenolic contents were done for two red seaweeds (Laurencia obtusa (Hudson) Lamouroux and Polysiphonia morrowii Harvey) and for one brown seaweed (Dictyopteris delicatula Lamouroux)...
June 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28603770/embodied-science-and-mixed-reality-how-gesture-and-motion-capture-affect-physics-education
#17
Mina C Johnson-Glenberg, Colleen Megowan-Romanowicz
A mixed design was created using text and game-like multimedia to instruct in the content of physics. The study assessed which variables predicted learning gains after a 1-h lesson on the electric field. The three manipulated variables were: (1) level of embodiment; (2) level of active generativity; and (3) presence of story narrative. Two types of tests were administered: (1) a traditional text-based physics test answered with a keyboard; and (2) a more embodied, transfer test using the Wacom large tablet where learners could use gestures (long swipes) to create vectors and answers...
2017: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/28602509/neurochip-an-updated-version-of-the-neurox-genotyping-platform-to-rapidly-screen-for-variants-associated-with-neurological-diseases
#18
Cornelis Blauwendraat, Faraz Faghri, Lasse Pihlstrom, Joshua T Geiger, Alexis Elbaz, Suzanne Lesage, Jean-Christophe Corvol, Patrick May, Aude Nicolas, Yevgeniya Abramzon, Natalie A Murphy, J Raphael Gibbs, Mina Ryten, Raffaele Ferrari, Jose Bras, Rita Guerreiro, Julie Williams, Rebecca Sims, Steven Lubbe, Dena G Hernandez, Kin Y Mok, Laurie Robak, Roy H Campbell, Ekaterina Rogaeva, Bryan J Traynor, Ruth Chia, Sun Ju Chung, John A Hardy, Alexis Brice, Nicholas W Wood, Henry Houlden, Joshua M Shulman, Huw R Morris, Thomas Gasser, Rejko Krüger, Peter Heutink, Manu Sharma, Javier Simón-Sánchez, Mike A Nalls, Andrew B Singleton, Sonja W Scholz
Genetics has proven to be a powerful approach in neurodegenerative diseases research, resulting in the identification of numerous causal and risk variants. Previously, we introduced the NeuroX Illumina genotyping array, a fast and efficient genotyping platform designed for the investigation of genetic variation in neurodegenerative diseases. Here, we present its updated version, named NeuroChip. The NeuroChip is a low-cost, custom-designed array containing a tagging variant backbone of about 306,670 variants complemented with a manually curated custom content comprised of 179,467 variants implicated in diverse neurological diseases, including Alzheimer's disease, Parkinson's disease, Lewy body dementia, amyotrophic lateral sclerosis, frontotemporal dementia, progressive supranuclear palsy, corticobasal degeneration, and multiple system atrophy...
May 17, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28601396/constructing-xylose-assimilating-pathways-in-pediococcus-acidilactici-for-high-titer-d-lactic-acid-fermentation-from-corn-stover-feedstock
#19
Zhongyang Qiu, Qiuqiang Gao, Jie Bao
Xylose-assimilating pathway was constructed in a d-lactic acid producing Pediococcus acidilactici strain and evolutionary adapted to yield a co-fermentation strain P. acidilactici ZY15 with 97.3g/L of d-lactic acid and xylose conversion of 92.6% obtained in the high solids content simultaneous saccharification and co-fermentation (SSCF) of dry dilute acid pretreated and biodetoxified corn stover feedstock. The heterologous genes encoding xylose isomerase (xylA) and xylulokinase (xylB) were screened and integrated into the P...
May 22, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28600930/explicating-the-structure-and-relations-of-the-mood-disorder-questionnaire-implications-for-screening-for-bipolar-and-related-disorders
#20
Kasey Stanton, David Watson
BACKGROUND: The Mood Disorder Questionnaire (MDQ; Hirschfeld et al., 2000) is a widely used screening measure in bipolar disorder research. Although this measure assesses a heterogeneous range of content, only limited prior research utilizing relatively small sample sizes has examined its factor structure. METHODS: The MDQ's structure was examined in 700 participants reporting current psychiatric treatment. We extended prior structural work on the MDQ by explicating relations between factors and a wide range of psychopathology and personality measures...
June 2, 2017: Journal of Affective Disorders
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