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https://www.readbyqxmd.com/read/28343170/mirnas-single-nucleotide-polymorphisms-snps-and-age-related-macular-degeneration-amd
#1
John Paul SanGiovanni, Peter M SanGiovanni, Przemysław Sapieha, Vincent De Guire
Advanced age-related macular degeneration (AAMD) is a complex sight-threating disease of public health significance. Micro RNAs (miRNAs) have been proposed as biomarkers for AAMD. The presence of certain single nucleotide polymorphisms (SNPs) may influence the explanatory value of these biomarkers. Here we present findings from an integrated approach used to determine whether AAMD-associated SNPs have the capacity to influence miRNA-mRNA pairing and, if so, to what extent such pairing may be manifested in a discrete AAMD transcriptome...
March 27, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28335983/ideal-guiding-catheter-position-during-bilaterally-engaged-percutaneous-coronary-intervention
#2
Kensuke Yokoi, Masahiko Hara, Yasunori Ueda, Satoru Sumitsuji, Masaki Awata, Youssef K Salah, Daijiro Kabata, Ayumi Shintani, Yasushi Sakata
Using a novel combined angiography computed tomography (CT) system, we evaluated the impact of the intra-aortic root position of a right coronary artery (RCA) catheter on its coaxiality. We retrospectively enrolled 19 patients who underwent CT scans during bilaterally engaged percutaneous coronary intervention. Coaxiality was defined as the angle between the RCA and the RCA catheter. The coaxiality was better when the RCA catheter was placed anterior to the left main coronary artery catheter (median 27.0° vs 53...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28335318/a-label-free-and-sensitive-fluorescent-qualitative-assay-for-bisphenol-a-based-on-rolling-circle-amplification-exonuclease-iii-combined-cascade-amplification
#3
Xia Li, Juan Song, Qing-Wang Xue, Fu-Heng You, Xia Lu, Yan-Cong Kong, Shu-Yi Ma, Wei Jiang, Chen-Zhong Li
Bisphenol A (BPA) detection in drinking water and food packaging materials has attracted much attention since the discovery that BPA can interfere with normal physiological processes and cause adverse health effects. Here, we constructed a label-free aptamer fluorescent assay for selective and sensitive detection of BPA based on the rolling circle amplification (RCA)/Exonuclease III (Exo III)-combined cascade amplification strategy. First, the duplex DNA probe (RP) with anti-BPA aptamer and trigger sequence was designed for BPA recognition and signal amplification...
October 21, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28331112/differential-incidence-and-morphology-of-spasm-according-to-coronary-arterial-location-by-intracoronary-ergonovine-spasm-provocation-testing
#4
Shozo Sueda, Hiroaki Kohno
BACKGROUND: We reported less provoked spasm in the left circumflex artery (LCX) by acetylcholine testing compared with the left anterior descending artery (LAD) and right coronary artery (RCA), so we investigated the clinical characteristics of provoked spasm in the LCX by ergonovine (ER) testing.Methods and Results:We retrospectively analyzed 1,185 consecutive cases of intracoronary ER testing during 25 years. Maximal ER dose was 64 μg into the left coronary artery (LCA) and 40 μg into the RCA...
March 23, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28321900/coronary-mr-angiography-using-image-based-respiratory-motion-compensation-with-inline-correction-and-fixed-gating-efficiency
#5
Markus Henningsson, Jouke Smink, Gerald van Ensbergen, Rene Botnar
PURPOSE: The purpose of this study was to evaluate a new inline motion compensation approach called image-based navigation with Constant Respiratory efficiency UsIng Single End-expiratory threshold (iNAV-CRUISE) for coronary MR angiography (CMRA). METHODS: The CRUISE gating technique was combined with iNAV motion correction and implemented inline for motion-compensated CMRA on a 1.5 Tesla scanner. The approach was compared to conventional diaphragmatic navigator gating (dNAVG) in 10 healthy subjects...
March 20, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28319088/reference-component-analysis-of-single-cell-transcriptomes-elucidates-cellular-heterogeneity-in-human-colorectal-tumors
#6
Huipeng Li, Elise T Courtois, Debarka Sengupta, Yuliana Tan, Kok Hao Chen, Jolene Jie Lin Goh, Say Li Kong, Clarinda Chua, Lim Kiat Hon, Wah Siew Tan, Mark Wong, Paul Jongjoon Choi, Lawrence J K Wee, Axel M Hillmer, Iain Beehuat Tan, Paul Robson, Shyam Prabhakar
Intratumoral heterogeneity is a major obstacle to cancer treatment and a significant confounding factor in bulk-tumor profiling. We performed an unbiased analysis of transcriptional heterogeneity in colorectal tumors and their microenvironments using single-cell RNA-seq from 11 primary colorectal tumors and matched normal mucosa. To robustly cluster single-cell transcriptomes, we developed reference component analysis (RCA), an algorithm that substantially improves clustering accuracy. Using RCA, we identified two distinct subtypes of cancer-associated fibroblasts (CAFs)...
March 20, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28316435/delta-check-for-blood-groups-a-step-ahead-in-blood-safety
#7
Raj Nath Makroo, Aakanksha Bhatia
BACKGROUND: Blood grouping is the single most important test performed by each and every transfusion service. A blood group error has a potential for causing severe life-threatening complications. A number of process strategies have been adopted at various institutions to prevent the occurrence of errors at the time of phlebotomy, pretransfusion testing, and blood administration. A delta check is one such quality control tool that involves the comparison of laboratory test results with results obtained on previous samples from the same patient...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28314672/fenestration-of-a-papyrus-pk-covered-stent-to-recover-the-occluded-left-main-bifurcation-after-sealing-a-left-main-perforation-during-a-cto-procedure
#8
Gerald S Werner, Waqar H Ahmed
Covered stents are indicated for coronary perforations, but they may seal off major side branches in that process. We report the successful sealing of an ostial left main perforation, induced by a guide catheter in the course of a retrograde approach to treat a chronic total occlusion (CTO) of the right coronary artery (RCA) in a 76year old woman with prior CABG. The implanted Papyrus covered stent, however, overlapped the left main bifurcation and occluded the non-grafted circumflex artery (CX) resulting in acute ischemia...
March 6, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28302433/improving-water-quality-in-a-dialysis-unit-using-root-cause-analysis
#9
Pallavi Yadav, Dawn England, Caprice Vanderkolk, Pui-Ying Iroh Tam
BACKGROUND: Water quality levels from hemodialysis (HD) and reverse osmosis (RO) machines in dialysis units must meet standards set by the American Association of Medical Instrumentation. Researchers used a root cause analysis (RCA) approach to identify and address factors affecting water quality in the HD and portable RO machines at our institution. METHODS: A multidisciplinary team reviewed processes, interviewed staff members, and identified opportunities to improve the current sampling and machine disinfection processes...
March 13, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28301132/nuclear-shell-biopolymers-initiated-by-telomere-elongation-for-individual-cancer-cell-imaging-and-drug-delivery
#10
Zhen Zhang, Yuting Jiao, Mengting Zhu, Shusheng Zhang
Here, we propose a strategy for unique nuclear-shell biopolymers initiated by telomere elongation for telomerase activity detection and precise drug delivery to individual cancer cells. Telomerase-triggered DNA rolling-circle amplification (RCA) is used to assemble nuclear-shell biopolymers with signal molecules for selective cancer cell recognition and efficient drug delivery to targeted individual cells. This strategy not only should allow the creation of clustered 5-carboxyfluorescein (FAM)-fluorescence spots in response to human-telomerase activity in individual cancer cells but also could efficiently deliver drugs to reduce the undesired death of healthy cells...
March 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28299686/electrochemical-biosensors-combined-with-isothermal-amplification-for-quantitative-detection-of-nucleic-acids
#11
Miyuki Tabata, Bo Yao, Ayaka Seichi, Koji Suzuki, Yuji Miyahara
In recent years, various isothermal amplification techniques have been developed as alternatives to polymerase chain reaction (PCR). The integration of isothermal amplification with electrical or electrochemical devices has enabled high-throughput nucleic acid-based assays with high sensitivity. We performed solid-phase rolling circle amplification (RCA) on the surface of a Au electrode, and detected RCA products in situ using chronocoulometry (CC) with [Ru (NH3)6](3+) as the signaling molecule. Detection sensitivity for DNA and a microRNA (miR-143) was 100 fM and 1 pM, respectively...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28294860/-coronary-flow-reserve-in-the-left-anterior-and-posterior-descending-arteries-as-an-additional-option-to-dipyridamole-stress-echocardiography-for-detection-of-stenosis
#12
A A Boshchenko, A V Vrublevsky, R S Karpov
AIM: to assess additive diagnostic value of simultaneous evaluation of coronary flow reserve (CFR) in the left anterior descending (LAD) artery and posterior descending artery (PDA) during dipyridamole stress echocardiography (stress-Echo) for detection of LAD and PDA stenoses >50%. METHODS: 108 in-patients (mean age 50+/-11 years) with cardiac chest pain underwent dipyridamole stress-Echo with ECG-analysis, wall motion analysis by 2-dimentional imaging (2D) and coronary flow reserve (CFR) evaluation in both LAD and PDA by pulse-wave Doppler...
April 2016: Kardiologiia
https://www.readbyqxmd.com/read/28290953/chief-of-residents-for-quality-improvement-and-patient-safety-a-recipe-for-a-new-role-in-graduate-medical-education
#13
Kelly Ferraro, Randall Zernzach, Stephen Maturo, Christopher Nagy, Rebecca Barrett
INTRODUCTION: The San Antonio Uniformed Services Health Education Consortium (SAUSHEC) is the largest group of residency programs in the Department of Defense. In an effort to provide improved Quality Improvement and Patient Safety (QI/PS) training for its residents, SAUSHEC created the position of Chief of QI/PS for Residents in the academic year 2014-2015. The Chief of QI/PS for Residents was based in the Internal Medicine residency program but also assisted with SAUSHEC-wide QI/PS projects...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290842/-serial-assessment-of-transthoracic-coronary-flow-reserve-as-method-of-assessing-efficacy-of-intracoronary-intervention-in-the-left-anterior-and-posterior-descending-arteries
#14
A A Boshchenko, A V Vrublevsky, R S Karpov
Transthoracic echocardiography (TTE) has been described as an accurate technique for noninvasive evaluation of coronary flow reserve (CFR) of the left anterior descending artery (LAD) and posterior descending artery (PDA). Aim of this study was to find out whether serial measurement of CFR in LAD and PDA using TTE allows detection of stenosis elimination after intracoronary intervention and is a marker of successful procedure. METHODS: The study group comprised 14 patients with single-vessel coronary disease (stenosis 82+/-14%) of the LAD (9 patients) or right coronary artery (RCA, 5 patients) scheduled for stent implantation...
June 2016: Kardiologiia
https://www.readbyqxmd.com/read/28275559/quantitative-assessment-on-coronary-computed-tomography-angiography-ccta-image-quality-comparisons-between-genders-and-different-tube-voltage-settings
#15
Teo Chee Chian, Norziana Mat Nassir, Mohd Izuan Ibrahim, Ahmad Khairuddin Md Yusof, Akmal Sabarudin
BACKGROUND: This study was carried out to quantify and compare the quantitative image quality of coronary computed tomography angiography (CCTA) between genders as well as between different tube voltages scan protocols. METHODS: Fifty-five cases of CCTA were collected retrospectively and all images including reformatted axial images at systolic and diastolic phases as well as images with curved multi planar reformation (cMPR) were obtained. Quantitative image quality including signal intensity, image noise, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of right coronary artery (RCA), left anterior descending artery (LAD), left circumflex artery (LCx) and left main artery (LM) were quantified using Analyze 12...
February 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28258851/longitudinal-2d-strain-can-help-diagnose-coronary-artery-disease-in-patients-with-suspected-non-st-elevation-acute-coronary-syndrome-but-apparent-normal-global-and-segmental-systolic-function
#16
Thibault Caspar, Hafida Samet, Mickaël Ohana, Philippe Germain, Soraya El Ghannudi, Samy Talha, Olivier Morel, Patrick Ohlmann
BACKGROUND: The clinical work-up of patients presenting with chest pain is a diagnostic challenge. We investigated the diagnostic performance of global (GLS) and territorial (TLS) longitudinal strain to predict coronary artery disease (CAD) in patients presenting with suspected non-ST-segment elevation acute coronary syndrome (NSTE-ACS) but apparent normal global and regional systolic function. METHODS: 150 consecutive suspected NSTE-ACS patients were initially screened for inclusion ; 58 patients with normal LVEF (≥55%) and WMSI (=1) were prospectively enrolled...
February 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28249613/a-new-prescription-model-for-regional-citrate-anticoagulation-in-therapeutic-plasma-exchanges
#17
Sébastien Kissling, Cécile Legallais, Menno Pruijm, Daniel Teta, Bruno Vogt, Michel Burnier, Eric Rondeau, Christophe Ridel
BACKGROUND: Regional citrate anticoagulation (RCA) is proposed for various extracorporeal purification techniques to overcome the risk of bleeding that might result from systemic anticoagulation. Yet, no individualized treatment protocol has been proposed for therapeutic plasma exchange (TPE) so far. The objective of this study was to assess the determinants of blood citrate concentration needed and to develop an individualized RCA protocol useful for clinical practice. METHODS: The study population included 14 patients who underwent a total of 47 TPE sessions...
March 1, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28248655/4d-in-vivo-ultrafast-ultrasound-imaging-using-a-row-column-addressed-matrix-and-coherently-compounded-orthogonal-plane-waves
#18
Martin Flesch, Mathieu Pernot, Jean Provost, Guillaume Ferin, An Nguyen-Dinh, Mickael Tanter, Thomas Deffieux
4D ultrafast ultrasound imaging was recently shown using a 2D matrix (i.e., fully populated) connected to a 1024-channel ultrafast ultrasound scanner. In this study, we investigate the Row-Column Addressing (RCA) matrix approach, which allows a reduction of independent channels from N x N to N + N, with a dedicated beamforming strategy for ultrafast ultrasound imaging based on the coherent compounding of Orthogonal Plane Wave (OPW). OPW is based on coherent compounding of plane wave transmissions in one direction with receive beamforming along the orthogonal direction and its orthogonal companion sequence...
March 1, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28238429/long-term-leaching-from-recycled-concrete-aggregates-applied-as-sub-base-material-in-road-construction
#19
Christian J Engelsen, Hans A van der Sloot, Gordana Petkovic
In the present study, the metal leaching from recycled concrete aggregates (RCA) used in road sub-base is presented after >10years of exposure. The released levels of inorganic constituents, the effect of small variation of pH and the use of de-icing salt during winter season were studied. In addition, speciation modelling for the major elements has been provided. The pH varied from 7.5 to 8.5 for the sub-base constructed with RCA whereas the pH of around 8 was obtained for the test section not affected by the traffic and de-icing salts...
February 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28230577/suicide-and-suicide-attempts-on-hospital-grounds-and-clinic-areas
#20
Peter D Mills, Bradley V Watts, Robin R Hemphill
OBJECTIVES: The goal of this study was to describe suicide and suicide attempts that occurred while the patient was on hospital grounds, common spaces, and clinic areas using root cause analysis (RCA) reports of these events in a national health care organization in the United States. METHOD: This is an observational review of all RCA reports of suicide and suicide attempts on hospital grounds, common spaces, and clinic areas in our system between December 1, 1999, and December 31, 2014...
February 22, 2017: Journal of Patient Safety
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