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https://www.readbyqxmd.com/read/29345271/flocculation-on-a-chip-a-novel-screening-approach-to-determine-floc-growth-rates-and-select-flocculating-agents
#1
Anand N P Radhakrishnan, Marco P C Marques, Matthew J Davies, Brian O'Sullivan, Daniel G Bracewell, Nicolas Szita
Flocculation is a key purification step in cell-based processes for the food and pharmaceutical industry where the removal of cells and cellular debris is aided by adding flocculating agents. However, finding the best suited flocculating agent and optimal conditions to achieve rapid and effective flocculation is a non-trivial task. In conventional analytical systems, turbulent mixing creates a dynamic equilibrium between floc growth and breakage, constraining the determination of floc formation rates. Furthermore, these systems typically rely on end-point measurements only...
January 18, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29344898/methods-for-high-throughput-drug-combination-screening-and-synergy-scoring
#2
Liye He, Evgeny Kulesskiy, Jani Saarela, Laura Turunen, Krister Wennerberg, Tero Aittokallio, Jing Tang
Gene products or pathways that are aberrantly activated in cancer but not in normal tissue hold great promises for being effective and safe anticancer therapeutic targets. Many targeted drugs have entered clinical trials but so far showed limited efficacy mostly due to variability in treatment responses and often rapidly emerging resistance. Toward more effective treatment options, we will need multi-targeted drugs or drug combinations, which selectively inhibit the viability and growth of cancer cells and block distinct escape mechanisms for the cells to become resistant...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344886/identifying-genetic-dependencies-in-cancer-by-analyzing-sirna-screens-in-tumor-cell-line-panels
#3
James Campbell, Colm J Ryan, Christopher J Lord
Loss-of-function screening using RNA interference or CRISPR approaches can be used to identify genes that specific tumor cell lines depend upon for survival. By integrating the results from screens in multiple cell lines with molecular profiling data, it is possible to associate the dependence upon specific genes with particular molecular features (e.g., the mutation of a cancer driver gene, or transcriptional or proteomic signature). Here, using a panel of kinome-wide siRNA screens in osteosarcoma cell lines as an example, we describe a computational protocol for analyzing loss-of-function screens to identify genetic dependencies associated with particular molecular features...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344583/heterozygous-rtel1-variants-in-bone-marrow-failure-and-myeloid-neoplasms
#4
Judith C W Marsh, Fernanda Gutierrez-Rodrigues, James Cooper, Jie Jiang, Shreyans Gandhi, Sachiko Kajigaya, Xingmin Feng, Maria Del Pilar F Ibanez, Flávia S Donaires, João P Lopes da Silva, Zejuan Li, Soma Das, Maria Ibanez, Alexander E Smith, Nicholas Lea, Steven Best, Robin Ireland, Austin G Kulasekararaj, Donal P McLornan, Anthony Pagliuca, Isabelle Callebaut, Neal S Young, Rodrigo T Calado, Danielle M Townsley, Ghulam J Mufti
Biallelic germline mutations in RTEL1 (regulator of telomere elongation helicase 1) result in pathologic telomere erosion and cause dyskeratosis congenita. However, the role of RTEL1 mutations in other bone marrow failure (BMF) syndromes and myeloid neoplasms, and the contribution of monoallelic RTEL1 mutations to disease development are not well defined. We screened 516 patients for germline mutations in telomere-associated genes by next-generation sequencing in 2 independent cohorts; one constituting unselected patients with idiopathic BMF, unexplained cytopenia, or myeloid neoplasms (n = 457) and a second cohort comprising selected patients on the basis of the suspicion of constitutional/familial BMF (n = 59)...
January 9, 2018: Blood Advances
https://www.readbyqxmd.com/read/29344310/drug-repurposing-screening-identifies-tioconazole-as-an-atg4-inhibitor-that-suppresses-autophagy-and-sensitizes-cancer-cells-to-chemotherapy
#5
Pei-Feng Liu, Kun-Lin Tsai, Chien-Jen Hsu, Wei-Lun Tsai, Jin-Shiung Cheng, Hsueh-Wei Chang, Chung-Wai Shiau, Yih-Gang Goan, Ho-Hsing Tseng, Chih-Hsuan Wu, John C Reed, Lee-Wei Yang, Chih-Wen Shu
Background: Tumor cells require proficient autophagy to meet high metabolic demands and resist chemotherapy, which suggests that reducing autophagic flux might be an attractive route for cancer therapy. However, this theory in clinical cancer research remains controversial due to the limited number of drugs that specifically inhibit autophagy-related (ATG) proteins. Methods: We screened FDA-approved drugs using a novel platform that integrates computational docking and simulations as well as biochemical and cellular reporter assays to identify potential drugs that inhibit autophagy-required cysteine proteases of the ATG4 family...
2018: Theranostics
https://www.readbyqxmd.com/read/29343989/comparison-of-the-performance-of-five-screening-methods-for-sarcopenia
#6
Médéa Locquet, Charlotte Beaudart, Jean-Yves Reginster, Jean Petermans, Olivier Bruyère
Background: Sarcopenia leads to serious adverse health consequences. There is a dearth of screening tools for this condition, and performances of these instruments have rarely been evaluated. Our aim was to compare the performance of five screening tools for identifying elders at risk of sarcopenia against five diagnostic definitions. Subjects and methods: We gathered cross-sectional data of elders from the SarcoPhAge ("Sarco"penia and "Ph"ysical Impairment with Advancing "Age") study...
2018: Clinical Epidemiology
https://www.readbyqxmd.com/read/29343293/identification-of-preoperative-prediction-factors-of-tumor-subtypes-for-patients-with-solitary-ground-glass-opacity-pulmonary-nodules
#7
Meishuang Li, Yanan Wang, Yulong Chen, Zhenfa Zhang
BACKGROUND: Recent wide spread use of low-dose helical computed tomography for the screening of lung cancer have led to an increase in the detection rate of very faint and smaller lesions known as ground-glass opacity nodules. The purpose of this study was to investigate the clinical factors of lung cancer patients with solitary ground-glass opacity pulmonary nodules on computed tomography. METHODS: A total of 423 resected solitary ground-glass opacity nodules were retrospectively evaluated...
January 17, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29341498/review-article-sepsis-in-the-emergency-department-part-2-investigations-and-monitoring
#8
REVIEW
Amith Shetty, Stephen Pj Macdonald, Gerben Keijzers, Julian M Williams, Benjamin Tang, Bas de Groot, Kelly Thompson, John F Fraser, Simon Finfer, Rinaldo Bellomo, Jonathan Iredell
Sepsis is characterised by organ dysfunction resulting from infection, with no reliable single objective test and current diagnosis based on clinical features and results of investigations. In the ED, investigations may be conducted to diagnose infection as the cause of the presenting illness, identify the source, distinguish sepsis from uncomplicated infection (i.e. without organ dysfunction) and/ or risk stratification. Appropriate sample collection for microbiological testing remains key for subsequent confirmation of diagnosis and rationalisation of antimicrobials...
January 16, 2018: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/29341027/developing-deep-learning-applications-for-life-science-and-pharma-industry
#9
Daniel Siegismund, Vasily Tolkachev, Stephan Heyse, Beate Sick, Oliver Duerr, Stephan Steigele
Deep Learning has boosted artificial intelligence over the past 5 years and is seen now as one of the major technological innovation areas, predicted to replace lots of repetitive, but complex tasks of human labor within the next decade. It is also expected to be 'game changing' for research activities in pharma and life sciences, where large sets of similar yet complex data samples are systematically analyzed. Deep learning is currently conquering formerly expert domains especially in areas requiring perception, previously not amenable to standard machine learning...
January 16, 2018: Drug Research
https://www.readbyqxmd.com/read/29340970/ultrahigh-temporal-resolution-of-visual-presentation-using-gaming-monitors-and-g-sync
#10
Christian H Poth, Rebecca M Foerster, Christian Behler, Ulrich Schwanecke, Werner X Schneider, Mario Botsch
Vision unfolds as an intricate pattern of information processing over time. Studying vision and visual cognition therefore requires precise manipulations of the timing of visual stimulus presentation. Although standard computer display technologies offer great accuracy and precision of visual presentation, their temporal resolution is limited. This limitation stems from the fact that the presentation of rendered stimuli has to wait until the next refresh of the computer screen. We present a novel method for presenting visual stimuli with ultrahigh temporal resolution (<1 ms) on newly available gaming monitors...
January 16, 2018: Behavior Research Methods
https://www.readbyqxmd.com/read/29340835/repurposed-fda-approved-drugs-targeting-genes-influencing-aging-can-extend-lifespan-and-healthspan-in-rotifers
#11
Terry W Snell, Rachel K Johnston, Amelia B Matthews, Hongyi Zhou, Mu Gao, Jeffrey Skolnick
Pharmaceutical interventions can slow aging in animals, and have advantages because their dose can be tightly regulated and the timing of the intervention can be closely controlled. They also may complement environmental interventions like caloric restriction by acting additively. A fertile source for therapies slowing aging is FDA approved drugs whose safety has been investigated. Because drugs bind to several protein targets, they cause multiple effects, many of which have not been characterized. It is possible that some of the side effects of drugs prescribed for one therapy may have benefits in retarding aging...
January 16, 2018: Biogerontology
https://www.readbyqxmd.com/read/29340790/an-automated-framework-for-qsar-model-building
#12
Samina Kausar, Andre O Falcao
BACKGROUND: In-silico quantitative structure-activity relationship (QSAR) models based tools are widely used to screen huge databases of compounds in order to determine the biological properties of chemical molecules based on their chemical structure. With the passage of time, the exponentially growing amount of synthesized and known chemicals data demands computationally efficient automated QSAR modeling tools, available to researchers that may lack extensive knowledge of machine learning modeling...
January 16, 2018: Journal of Cheminformatics
https://www.readbyqxmd.com/read/29340287/fully-automated-detection-of-breast-cancer-in-screening-mri-using-convolutional-neural-networks
#13
Mehmet Ufuk Dalmış, Suzan Vreemann, Thijs Kooi, Ritse M Mann, Nico Karssemeijer, Albert Gubern-Mérida
Current computer-aided detection (CADe) systems for contrast-enhanced breast MRI rely on both spatial information obtained from the early-phase and temporal information obtained from the late-phase of the contrast enhancement. However, late-phase information might not be available in a screening setting, such as in abbreviated MRI protocols, where acquisition is limited to early-phase scans. We used deep learning to develop a CADe system that exploits the spatial information obtained from the early-phase scans...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29340268/out-with-the-old-in-with-the-new-assessing-change-in-screen-time-when-measurement-changes-over-time
#14
Katie E Gunnell, Jennifer Brunet, Mathieu Bélanger
We examined if screen time can be assessed over time when the measurement protocol has changed to reflect advances in technology. Beginning in 2011, 929 youth (9-12 years at time one) living in in New Brunswick (Canada) self-reported the amount of time spent watching television (cycles 1-13), using computers (cycles 1-13), and playing video games (cycles 3-13). Using longitudinal invariance to test a shifting indicators model of screen time, we found that the relationships between the latent variable reflecting overall screen time and the indicators used to assess screen time were invariant across cycles (weak invariance)...
March 2018: Preventive Medicine Reports
https://www.readbyqxmd.com/read/29339082/water-mediated-interactions-enable-smooth-substrate-transport-in-a-bacterial-efflux-pump
#15
Attilio Vittorio Vargiu, Venkata Krishnan Ramaswamy, Ivana Malvacio, Giuliano Malloci, Ulrich Kleinekathöfer, Paolo Ruggerone
BACKGROUND: Efflux pumps of the Resistance-Nodulation-cell Division superfamily confer multi-drug resistance to Gram-negative bacteria. The most-studied polyspecific transporter belonging to this class is the inner-membrane trimeric antiporter AcrB of Escherichia coli. In previous studies, a functional rotation mechanism was proposed for its functioning, according to which the three monomers undergo concerted conformational changes facilitating the extrusion of substrates. However, the molecular determinants and the energetics of this mechanism still remain unknown, so its feasibility must be proven mechanistically...
January 12, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29338501/does-the-evidence-support-the-implementation-of-lung-cancer-screening-with-low-dose-computed-tomography
#16
Paul F Pinsky
No abstract text is available yet for this article.
January 17, 2018: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/29336283/headaches-and-facial-pain-in-rhinology
#17
Asitha D L Jayawardena, Rakesh Chandra
"Sinus headache" is a common chief complaint that often leads patients to an otolaryngologist's office. Because facial pain may or may not be sinogenic in origin, the otolaryngologist should be equipped to evaluate and treat or to appropriately refer these patients. Analysis of current data indicates that the majority of patients who present with sinus headaches actually have migraines. Furthermore, the downstream effect of the cytokine cascade initiated in migraine physiology can cause rhinologic symptoms, including rhinorrhea, congestion, and lacrimation, which may also confound diagnosis...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29335817/repurposing-existing-drugs-for-new-ampk-activators-as-a-strategy-to-extend-lifespan-a-computer-aided-drug-discovery-study
#18
Sepideh Mofidifar, Farzin Sohraby, Milad Bagheri, Hassan Aryapour
Dietary restriction is one of the several ways which could putatively extend organisms' lifespan, ranging from Saccharomyces cerevisiae to rodents, by activating the AMP-activated protein kinase (AMPK), an ATP/AMP sensor. Extensive researches have shown that aging reduces sensibility of AMPK and eventually causes energy imbalance in cells. Research in mammals' AMPK depicts that this signaling molecule could control autophagy, improve cellular stress resistance and suppress inflammatory responses. Hence, in this study we performed a drug repurposing of 1908 FDA-approved drugs in order to discover putative safe activators of AMPK and to find new applications for existing drugs...
January 15, 2018: Biogerontology
https://www.readbyqxmd.com/read/29334277/validation-of-dpoae-screening-conducted-by-village-health-workers-in-a-rural-community-with-real-time-click-evoked-tele-auditory-brainstem-response
#19
Vidya Ramkumar, C S Vanaja, James W Hall, K Selvakumar, Roopa Nagarajan
OBJECTIVE: This study assessed the validity of DPOAE screening conducted by village health workers (VHWs) in a rural community. Real-time click evoked tele-auditory brainstem response (tele-ABR) was used as the gold standard to establish validity. DESIGN: A cross-sectional design was utilised to compare the results of screening by VHWs to those obtained via tele-ABR. Study samples: One hundred and nineteen subjects (0 to 5 years) were selected randomly from a sample of 2880 infants and young children who received DPOAE screening by VHWs...
January 15, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29334237/safety-of-working-patterns-among-uk-neuroradiologists-what-can-we-learn-from-the-aviation-industry-and-cognitive-science
#20
John Reicher, Stuart Currie, Daniel Birchall
As the volume and complexity of imaging in the UK continues to rise, there is pressure on radiologists to spend increasing lengths of time reporting to cope with the growing workload. However, there is limited guidance for radiologists about structuring the working day to achieve the necessary balance between satisfactory reporting volume and maintaining quality and safety. We surveyed 86 Neuroradiologists (receiving 59 responses), regarding time spent reporting, frequency and duration of work breaks, and break activities...
January 15, 2018: British Journal of Radiology
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