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https://www.readbyqxmd.com/read/29210892/physiologically-triggered-digital-cognitive-aid-facilitates-crisis-management-in-a-simulated-operating-room-a-randomized-controlled-study
#1
Jonathan Lipps, Lori Meyers, Scott Winfield, Michael Durda, Vedat Yildiz, Michael Kushelev
INTRODUCTION: Although the benefits of using cognitive aids in anesthesia care have previously been demonstrated, several challenges remain. It must be presented in a timely manner, and providers must be amenable to using the tool once it is available. We hypothesized that anesthesia residents would perform superiorly when presented with a digital cognitive aid (DCogA) that is automatically triggered by a set vital sign aberration. METHODS: Thirty anesthesia residents were randomized to either control (with access to hard copy of the cognitive aid) or receive a DCogA projected on their anesthesia information management system with the onset of heart block and associated hypotension...
November 28, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29210092/comparison-of-digital-and-film-chest-radiography-for-detection-and-medical-surveillance-of-silicosis-in-a-setting-with-a-high-burden-of-tuberculosis
#2
Alfred Franzblau, Jim teWaterNaude, Ananda Sen, Hannah d'Arcy, Jacqueline S Smilg, Khanyakude S Mashao, Cristopher A Meyer, James E Lockey, Rodney I Ehrlich
BACKGROUND: Continuing use of analog film and digital chest radiography for screening and surveillance for pneumoconiosis and tuberculosis in lower and middle income countries raises questions of equivalence of disease detection. This study compared analog to digital images for intra-rater agreement across formats and prevalence of changes related to silicosis and tuberculosis among South African gold miners using the International Labour Organization classification system. METHODS: Miners with diverse radiological presentations of silicosis and tuberculosis were recruited...
December 6, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/29198217/what-does-it-take-to-search-organized-the-cognitive-correlates-of-search-organization-during-cancellation-after-stroke
#3
Antonia F Ten Brink, Johanna M A Visser-Meily, Tanja C W Nijboer
OBJECTIVES: Stroke could lead to deficits in organization of visual search. Cancellation tests are frequently used in standard neuropsychological assessment and appear suitable to measure search organization. The current aim was to evaluate which cognitive functions are associated with cancellation organization measures after stroke. METHODS: Stroke patients admitted to inpatient rehabilitation were included in this retrospective study. We performed exploratory factor analyses to explore cognitive domains...
December 4, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29189636/mitochondrial-fusion-and-fission-proteins-and-the-recognition-memory-of-imprinting-in-domestic-chicks
#4
Giorgi Margvelani, Maia Meparishvili, Ekaterine Tevdoradze, Brian J McCabe, Revaz Solomonia
Visual imprinting is a learning process through which young, visually naive animals come to recognize a visual stimulus by being exposed to it (training) and subsequently approach the stimulus in preference to others. A large body of evidence indicates that a restricted part of the forebrain, the intermediate medial mesopallium (IMM), is a memory region for visual imprinting in the domestic chick. Previous studies have shown learning-related up-regulation of several mitochondrial proteins in the IMM 24 h after training...
November 17, 2017: Neuroreport
https://www.readbyqxmd.com/read/29188800/chip-based-digital-pcr-as-a-novel-detection-method-for-quantifying-micrornas-in-acute-myocardial-infarction-patients
#5
Samuel Robinson, Marie Follo, David Haenel, Maximilian Mauler, Daniela Stallmann, Lukas Andreas Heger, Thomas Helbing, Daniel Duerschmied, Karlheinz Peter, Christoph Bode, Ingo Ahrens, Marcus Hortmann
miRNAs have shown promise as potential biomarkers for acute myocardial infarction (AMI). However, the current used quantitative real-time PCR (qRT-PCR) allows solely for relative expression of nucleic acids and it is susceptible to day-to-day variability, which has limited the validity of using the miRNAs as biomarkers. In this study we explored the technical qualities and diagnostic potential of a new technique, chip-based digital PCR, in quantifying the miRNAs in patients with AMI and ischaemia-reperfusion injury (I/R)...
November 30, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29188245/a-microfluidic-chip-capable-of-generating-and-trapping-emulsion-droplets-for-digital-loop-mediated-isothermal-amplification-analysis
#6
Yu-Dong Ma, Kang Luo, Wen-Hsin Chang, Gwo-Bin Lee
Loop-mediated isothermal amplification (LAMP) is a nucleic acid amplification technique that rapidly amplifies specific DNA molecules at high yield. In this study, a microfluidic droplet array chip was designed to execute the digital LAMP process. The novel device was capable of 1) creating emulsion droplets, 2) sorting them into a 30 × 8 droplet array, and 3) executing LAMP across the 240 trapped and separated droplets (with a volume of 0.22 nL) after only 40 min of reaction at 56 °C. Nucleic acids were accurately quantified across a dynamic range of 50 to 2...
November 30, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29173762/quantification-of-plasma-egfr-mutations-in-patients-with-lung-cancers-comparison-of-the-performance-of-arms-plus-and-droplet-digital-pcr
#7
Lin Wang, Qiaomei Guo, Wenjun Yu, Lihua Qiao, Mingna Zhao, Chenzi Zhang, Xiaomeng Hu, Guohua Yang, Liwen Xiong, Jiatao Lou
OBJECTIVES: EGFR mutation is a key factor to predict EGFR-TKI efficacy. However, a significant number of advanced patients do not have sufficient tumor specimens for molecular testing. Also, there is a lack of quantitative assay to analyze the mutant abundance. This study aims to evaluate the detection efficiency and clinical feasibility of a new platform, namely ARMS-Plus, for the detection and quantification of EGFR mutations in plasma. MATERIALS AND METHODS: The detection limit of ARMS-Plus was assessed by detecting spiked mutant plasmids which were serially diluted with normal human genomic DNA...
December 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29156777/patients-with-nsclc-may-display-a-low-ratio-of-p-t790m-vs-activating-egfr-mutations-in-plasma-at-disease-progression-implications-for-personalised-treatment
#8
Marzia Del Re, Paola Bordi, Iacopo Petrini, Eleonora Rofi, Francesca Mazzoni, Lorenzo Belluomini, Enrico Vasile, Giuliana Restante, Francesco Di Costanzo, Alfredo Falcone, Antonio Frassoldati, Ron H N van Schaik, Christi M J Steendam, Antonio Chella, Marcello Tiseo, Riccardo Morganti, Romano Danesi
Introduction: NSCLC harboring activating mutations of EGFR is highly sensitive to first-line EGFR-tyrosine kinase inhibitors (TKIs), but drug resistance depending on the EGFR mutation p.T790M will occur in about 50-60% of patients. Detailed information on the amount of p.T790M plasmatic level associated with resistance to EGFR-TKIs and guidance to treatment with p.T790M-effective TKI depending on these levels, is lacking. Methods: This study enrolled p.T790M-positive patients (n=49) affected by EGFR-mutated NSCLC at progression to first-line EGFR-TKIs and, in selected cases (n=5), after second-line treatment with osimertinib...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156716/using-droplet-digital-pcr-to-analyze-mycn-and-alk-copy-number-in-plasma-from-patients-with-neuroblastoma
#9
Marco Lodrini, Annika Sprüssel, Kathy Astrahantseff, Daniela Tiburtius, Robert Konschak, Holger N Lode, Matthias Fischer, Ulrich Keilholz, Angelika Eggert, Hedwig E Deubzer
The invasive nature of surgical biopsies deters sequential application, and single biopsies often fail to reflect tumor dynamics, intratumor heterogeneity and drug sensitivities likely to change during tumor evolution and treatment. Implementing molecular characterization of cell-free neuroblastoma-derived DNA isolated from blood plasma could improve disease assessment for treatment selection and monitoring of patients with high-risk neuroblastoma. We established droplet digital PCR (ddPCR) protocols for MYCN and ALK copy number status in plasma from neuroblastoma patients...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29152132/high-baalc-copy-numbers-in-peripheral-blood-prior-to-allogeneic-transplantation-predict-early-relapse-in-acute-myeloid-leukemia-patients
#10
Madlen Jentzsch, Marius Bill, Juliane Grimm, Julia Schulz, Karoline Goldmann, Stefanie Beinicke, Janine Häntschel, Wolfram Pönisch, Georg-Nikolaus Franke, Vladan Vucinic, Gerhard Behre, Thoralf Lange, Dietger Niederwieser, Sebastian Schwind
High BAALC expression levels at acute myeloid leukemia diagnosis have been linked to adverse outcomes. Recent data indicate that high BAALC expression levels may also be used as marker for residual disease following acute myeloid leukemia treatment. Allogeneic hematopoietic stem cell transplantation (HSCT) offers a curative treatment for acute myeloid leukemia patients. However, disease recurrence remains a major clinical challenge and identification of high-risk patients prior to HSCT is crucial to improve outcomes...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29148297/detection-of-pseudorabies-virus-by-duplex-droplet-digital-pcr-assay
#11
Meishen Ren, Hua Lin, Shijie Chen, Miao Yang, Wei An, Yin Wang, Changhua Xue, Yinjie Sun, Yubao Yan, Juan Hu
Aujeszky's disease, caused by pseudorabies virus (PRV), has damaged the economy of the Chinese swine industry. A large number of PRV gene-deleted vaccines have been constructed based on deletion of the glycoprotein E ( gE) gene combined with other virulence-related gene deletions, such as thymidine kinase ( TK), whereas PRV wild-type strains contain an intact gE gene. We developed a sensitive duplex droplet digital PCR (ddPCR) assay to rapidly detect PRV wild-type isolates and gE gene-deleted viral vaccines...
November 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29145448/steps-to-achieve-quantitative-measurements-of-microrna-using-two-step-droplet-digital-pcr
#12
Erica V Stein, David L Duewer, Natalia Farkas, Erica L Romsos, Lili Wang, Kenneth D Cole
Droplet digital PCR (ddPCR) is being advocated as a reference method to measure rare genomic targets. It has consistently been proven to be more sensitive and direct at discerning copy numbers of DNA than other quantitative methods. However, one of the largest obstacles to measuring microRNA (miRNA) using ddPCR is that reverse transcription efficiency depends upon the target, meaning small RNA nucleotide composition directly effects primer specificity in a manner that prevents traditional quantitation optimization strategies...
2017: PloS One
https://www.readbyqxmd.com/read/29142136/size-composition-and-evolution-of-hiv-dna-populations-during-early-antiretroviral-therapy-and-intensification-with-maraviroc
#13
Antoine Chaillon, Sara Gianella, Steven M Lada, Josué Perez-Santiago, Parris Jordan, Caroline Ignacio, Maile Karris, Douglas Richman, Sanjay R Mehta, Susan J Little, Joel O Wertheim, Davey M Smith
Residual viremia is common during antiretroviral therapy (ART), and could be caused by ongoing low-level virus replication or by release of viral particles from infected cells. ART Intensification should impact ongoing viral propagation but not virion release. Eighteen acutely infected men were enrolled in a randomized controlled trial, and followed for a median of 107 weeks. Participants started ART with (n=9) or without (n=9) intensification with maraviroc (MVC) within 90 days of infection. Levels of HIV DNA and cell-free RNA were quantified by droplet digital PCR...
November 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29138500/circulating-androgen-receptor-combined-with-18f-fluorocholine-pet-ct-metabolic-activity-and-outcome-to-androgen-receptor-signalling-directed-therapies-in-castration-resistant-prostate-cancer
#14
V Conteduca, E Scarpi, P Caroli, S Salvi, C Lolli, S L Burgio, C Menna, G Schepisi, S Testoni, G Gurioli, G Paganelli, V Casadio, F Matteucci, U De Giorgi
The association between choline uptake and androgen receptor (AR) expression is suggested by the upregulation of choline kinase-alpha in prostate cancer. Recently, detection of AR aberration in cell-free DNA as well as early 18F-fluorocholine positron emission tomography/computed tomography (FCH-PET/CT) were associated with outcome in metastatic castration-resistant prostate cancer (mCRPC) patients treated with abiraterone and enzalutamide. We aimed to make a direct comparison between circulating AR copy number (CN) and choline uptake at FCH-PET/CT...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132765/cortical-thinning-correlates-of-changes-in-visuospatial-and-visuoperceptual-performance-in-parkinson-s-disease-a-4-year-follow-up
#15
A I Garcia-Diaz, B Segura, H C Baggio, C Uribe, A Campabadal, A Abos, M J Marti, F Valldeoriola, Y Compta, N Bargallo, C Junque
BACKGROUND: Growing evidence highlights the relevance of posterior cortically-based cognitive deficits in Parkinson's disease (PD) as possible biomarkers of the evolution to dementia. Cross-sectional correlational studies have established a relationship between the degree of atrophy in posterior brain regions and visuospatial and visuoperceptual (VS/VP) impairment. The aim of this study is to address the progressive cortical thinning correlates of VS/VP performance in PD. METHODS: Forty-four PD patients and 20 matched healthy subjects were included in this study and followed for 4 years...
November 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29127894/detection-and-localization-of-copy-paste-forgeries-in-digital-videos
#16
Raahat Devender Singh, Naveen Aggarwal
Amidst the continual march of technology, we find ourselves relying on digital videos to proffer visual evidence in several highly sensitive areas such as journalism, politics, civil and criminal litigation, and military and intelligence operations. However, despite being an indispensable source of information with high evidentiary value, digital videos are also extremely vulnerable to conscious manipulations. Therefore, in a situation where dependence on video evidence is unavoidable, it becomes crucial to authenticate the contents of this evidence before accepting them as an accurate depiction of reality...
October 26, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29112704/circulating-tumor-dna-predicts-survival-in-patients-with-resected-high-risk-stage-ii-iii-melanoma
#17
R J Lee, G Gremel, A Marshall, K A Myers, N Fisher, J Dunn, N Dhomen, P G Corrie, M R Middleton, P Lorigan, R Marais
Background: Patients with high-risk stage II/III resected melanoma commonly develop distant metastases. At present, we cannot differentiate between patients who will recur or those who are cured by surgery. We investigated if circulating tumor DNA (ctDNA) can predict relapse and survival in patients with resected melanoma. Patients and methods: We performed droplet digital polymerase chain reaction to detect BRAF and NRAS mutations in plasma taken after surgery from 161 stage II/III high-risk melanoma patients enrolled in the AVAST-M adjuvant trial...
November 3, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29110585/cell-free-dna-levels-and-correlation-to-stage-and-outcome-following-treatment-of-locally-advanced-rectal-cancer
#18
Anders Kindberg Boysen, Yvonne Wettergren, Boe Sandahl Sorensen, Helena Taflin, Bengt Gustavson, Karen-Lise Garm Spindler
Accurate staging of rectal cancer remains essential for optimal patient selection for combined modality treatment, including radiotherapy, chemotherapy and surgery. We aimed at examining the correlation of cell free DNA with the pathologic stage and subsequent risk of recurrence for patients with locally advanced rectal cancer undergoing preoperative chemoradiation. We examined 75 patients with locally advanced rectal cancer receiving preoperative chemoradiation. Blood samples for translational use were drawn prior to rectal surgery...
November 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29109452/a-digital-microfluidic-system-for-loop-mediated-isothermal-amplification-and-sequence-specific-pathogen-detection
#19
Liang Wan, Tianlan Chen, Jie Gao, Cheng Dong, Ada Hang-Heng Wong, Yanwei Jia, Pui-In Mak, Chu-Xia Deng, Rui P Martins
A digital microfluidic (DMF) system has been developed for loop-mediated isothermal amplification (LAMP)-based pathogen nucleic acid detection using specific low melting temperature (Tm) Molecular Beacon DNA probes. A positive-temperature-coefficient heater with a temperature sensor for real-time thermal regulation was integrated into the control unit, which generated actuation signals for droplet manipulation. To enhance the specificity of the LAMP reaction, low-Tm Molecular Beacon probes were designed within the single-stranded loop structures on the LAMP reaction products...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29093617/detection-of-kras-g12d-in-colorectal-cancer-stool-by-droplet-digital-pcr
#20
Susana Olmedillas-López, Dennis César Lévano-Linares, Carmen Laura Aúz Alexandre, Luz Vega-Clemente, Edurne León Sánchez, Alejandro Villagrasa, Jaime Ruíz-Tovar, Mariano García-Arranz, Damián García-Olmo
AIM: To assess KRAS G12D mutation detection by droplet digital PCR (ddPCR) in stool-derived DNA from colorectal cancer (CRC) patients. METHODS: In this study, tumor tissue and stool samples were collected from 70 patients with stage I-IV CRC diagnosed by preoperative biopsy. KRAS mutational status was determined by pyrosequencing analysis of DNA obtained from formalin-fixed paraffin-embedded (FFPE) tumor tissues. The KRAS G12D mutation was then analyzed by ddPCR in FFPE tumors and stool-derived DNA from patients with this point mutation...
October 21, 2017: World Journal of Gastroenterology: WJG
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