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https://www.readbyqxmd.com/read/29784368/an-ultrasensitive-electrochemiluminescence-immunosensor-based-on-platinum-nickel-nanocubes-l-cysteine-luminol-nanocomposite
#1
Yinfang Wang, Haifeng Sha, Hong Ke, Nengqin Jia
An ultrasensitive electrochemiluminescence (ECL) immunosensor was initially developed for quantitative detection of carbohydrate antigen 15-3 (CA15-3) using platinum nickel nanocubes-L-cysteine-luminol nanocomposite (PtNi NCs-L-Cys-luminol) as signal probe. Herein, the PtNi NCs-L-Cys-luminol nanocomposite was modified on the glassy carbon electrode (GCE) surface via the film-forming properties of chitosan. Then, the CA15-3 antibody was attached to the modified electrode surface by amidating reaction to construct the ECL immunosensor...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784351/a-label-free-electrochemiluminescent-immunosensor-for-glutamate-decarboxylase-antibody-detection-on-aunps-supporting-interface
#2
Xuexue Ma, Chen Fang, Jilin Yan, Qun Zhao, Yifeng Tu
In this paper, we will describe a novel lable-free electrochemiluminescent (ECL) immunosensor for the detection of glutamate decarboxylase antibody (GADA) in which Au nanoparticles (AuNPs) had pre-functionalized the indium tin oxide (ITO) glass to support the sensing interface. The preparation of the basal electrode only need a simple two-step drop coating, a thin polymer of hydrolyzed 3-aminopropyl trimethoxysilane, and the AuNPs gel on the ITO substrate. The AuNPs not only enhanced the ECL signal of luminol, but also acted to immobilize the glutamate decarboxylase (GAD) to build the sensing host...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29780073/early-lvad-implantation-in-a-patient-with-left-ventricular-failure-after-aortic-dissection-with-left-main-stem-involvement
#3
Hazem El Beyrouti, Angela Kornberger, Nancy Halloum, Andres Beiras-Fernandez, Christian-Friedrich Vahl
BACKGROUND: Coronary involvement in aortic dissection heralds a poor outcome. Involvement of the left main stem may lead to left ventricular (LV) failure requiring mechanical circulatory support. CASE REPORT: A staged approach was applied in a 24-year-old female who suffered extensive infarction due to aortic dissection with left main stem involvement. After replacement of the ascending aorta and grafting of the left internal thoracic artery to the left anterior descending artery following a failed attempt at reconstruction of the left coronary ostium, she failed to wean from cardiopulmonary bypass (CPB) and underwent implantation of an extracorporeal life support (ECLS) system as a bridge to decision...
May 21, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29779707/ideal-starting-point-and-trajectory-of-a-screw-for-the-dorsal-approach-to-scaphoid-fractures
#4
Asher Kupperman, Ryan Breighner, Eliana Saltzman, Darryl Sneag, Scott Wolfe, Steve Lee
PURPOSE: To determine the screw starting point and trajectory for the dorsal approach to scaphoid fractures that provides a combination of length and compression at the fracture site. METHODS: Computed tomography scans were obtained of 10 scaphoid fractures for 3 common fracture types. A computerized model was generated for each scaphoid. Screw starting point, length, and angle to the fracture plane were analyzed for starting points and trajectories within a safe zone that protected against cortical penetration...
May 17, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29779622/anticoagulation-during-ecmo-in-neonatal-and-paediatric-patients
#5
Rebecca Barton, Vera Ignjatovic, Paul Monagle
Extracorporeal Membrane Oxygenation (ECMO) is a form of Extracorporeal Life Support (ECLS) which is used frequently in the paediatric and neonatal setting to support either the pulmonary, or both the pulmonary and cardiac systems. Management of ECMO requires the use of systemic anticoagulation to prevent patient and circuit based thrombosis, which in turn increases the risk of haemorrhage. A number of coagulation tests, laboratory and point of care based, are used to monitor anticoagulation, however the evidence for correlation of the test results with level of anticoagulant and clinical outcomes in children remains poor...
May 8, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29779368/automated-3d-printed-microfluidic-array-for-rapid-nanomaterial-enhanced-detection-of-multiple-proteins
#6
Karteek Kadimisetty, Spundana Malla, Ketki Bhalerao, Islam M Mosa, Snehasis Bhakta, Norman Lee, James F Rusling
We report here the fabrication and validation of a novel 3D printed, automated immunoarray to detect multiple proteins with ultralow detection limits. This low cost, miniature immunoarray employs electrochemiluminescent (ECL) detection measured with a CCD camera and employs touch screen control of a micropump to facilitate automated use. The miniaturized array features prefilled reservoirs to deliver sample and reagents to a paper-thin pyrolytic graphite microwell detection chip to complete sandwich immunoassays...
May 21, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29778001/patchy-gold-coated-fe-3-o-4-nanospheres-with-enhanced-catalytic-activity-applied-for-paper-based-bipolar-electrode-electrochemiluminescence-aptasensors
#7
Xin Zhang, Ning Bao, Xiliang Luo, Shou-Nian Ding
In this work, novel multifunctional patchy gold coated Fe3 O4 hybrid nanoparticles (PG-Fe3 O4 NPs) have been successfully synthesized in aqueous medium via a facile adsorption-reduction method. A rational formation mechanism has been proposed by monitoring the morphological evolution. The PG-Fe3 O4 NPs retained the good magnetic property and exhibited excellent catalytical effeciency towards the electrochemical reduction of hydrogen peroxide. Chronoamperometric and amperometric experiments indicated a relatively high catalytic rate constant of 3...
May 10, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29777683/probing-the-binding-site-of-novel-selective-positive-allosteric-modulators-at-the-m-1-machr
#8
Elham Khajehali, Celine Valant, Manuela Jörg, Andrew B Tobin, P Jeffrey Conn, Craig W Lindsley, Patrick M Sexton, Peter J Scammells, Arthur Christopoulos
Subtype-selective allosteric modulation of the M1 muscarinic acetylcholine (ACh) receptor (M1 mAChR) is an attractive approach for the treatment of numerous disorders, including cognitive deficits. The discovery of benzyl quinolone carboxylic acid, BQCA, a selective M1 mAChR positive allosteric modulator (PAM), spurred the subsequent development of newer generation M1 PAMs representing diverse chemical scaffolds, different pharmacodynamic properties and, in some instances, improved pharmacokinetics. Key exemplar molecules from such efforts include PF-06767832 (N-((3R,4S)-3-hydroxytetrahydro-2H-pyran-4-yl)-5-methyl-4-(4-(thiazol-4-yl)benzyl)pyridine-2-carboxamide), VU6004256 (4,6-difluoro-N-(1S,2S)-2-hydroxycyclohexyl-1-((6-(1-methyl-1H-pyrazol-4-yl)pyridine-3-yl)methyl)-1H-indole-3-carboxamide) and MIPS1780 (3-(2-hydroxycyclohexyl)-6-(2-((4-(1-methyl-1H-pyrazol-4-yl)-benzyl)oxy)phenyl)pyrimidin-4(3H)-one)...
May 16, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29775853/an-ultrasensitive-electrochemiluminescence-biosensor-for-detection-of-microrna-by-in-situ-electrochemically-generated-copper-nanoclusters-as-luminophore-and-tio-2-as-coreaction-accelerator
#9
Hongxia Liao, Ying Zhou, Yaqin Chai, Ruo Yuan
Herein, we constructed an ultrasensitive electrochemiluminescence (ECL) biosensor for detecting microRNA-21 (miR-21) based on in-situ generation of copper nanoclusters (Cu NCs) as luminophore and titanium dioxide (TiO2 ) as coreaction accelerator. First, numerous AT-rich double-stranded DNA (dsDNA) was produced from the conversion of a small amount of target miR-21 via the combination of exonuclease III (Exo III)-assisted amplification and hybridization chain reaction (HCR), which could reduce the aggregation-caused self-etching effect of Cu NCs and improve the emitting of Cu NCs...
May 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29762934/rescue-tavi-for-aortic-regurgitation-after-left-ventricular-assist-device-implantation-following-preoperative-impella%C3%A2-support
#10
Florian E M Herrmann, Petra Wellmann, Vera von Dossow, Steffen Massberg, Christian Hagl, René Schramm, Maximilian Pichlmaier
A patient presented with a decompensated cardiomyopathy requiring invasive hemodynamic support with an Impella® heart pump. Extracorporeal life support (ECLS) became necessary during the further course and the patient was bridged to left ventricular assist device (LVAD) implantation. Postoperatively, the patient did not improve as expected due to new aortic regurgitation (AR) that was most likely caused by the previously placed Impella. A SAPIEN 3 transcatheter aortic valve was implanted as a bail-out strategy; an additional valve-in-valve rescue was required due to paravalvular regurgitation...
September 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29759226/a-novel-electrochemiluminescence-resonance-energy-transfer-system-of-luminol-graphene-quantum-dot-composite-and-its-application-in-h-2-o-2-detection
#11
Kaile Tian, Dejian Li, Tingting Tang, Fei Nie, Yang Zhou, Jianxiu Du, Jianbin Zheng
Luminol-nitrogen doped graphene quantum dot (luminol-NGQDs) nanocomposite was synthesized and a novel electrochemiluminescence resonance energy transfer (ECL-RET) process occurred between luminol as the donor and NGQDs as the acceptor in the composite. This ECL-RET effect helped luminol-NGQDs composite produced an anodic ECL signal without coreactants. The ECL-RET mechanism was also studied based on the fluorescence spectra, the ultraviolet-visible absorption spectra and the electrochemiluminescence (ECL) spectra...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29756773/combined-spectroelectrochemical-and-simulated-insights-into-the-electrogenerated-chemiluminescence-coreactant-mechanism
#12
Andrew Scott Danis, Karlie Paige Potts, Samuel Charles Perry, Janine Mauzeroll
Electrogenerated chemiluminescence (ECL) based sensors have the intrinsic advantage of having zero theoretical background signal, derived from the electrochemical initiation of the luminescence process. Since the limit of detection (LOD) for sensors is defined as three times the noise of the background over the sensitivity of the system, further improvement to an ECL based detection limit is tied to improving sensitivity. Enhancing ECL sensitivity can be achieved through optimizing the mechanistic or kinetic performance of the reagents...
May 14, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29754604/electrochemiluminescence-immunoassay-based-on-site-specific-labeling-using-a-histidine-binding-iridium-iii-solvento-complex
#13
Ming Zhou, Ying Xia
Histidine bound bis-cyclometalated iridium (III) complexes were found to be luminescent in previous studies. This work demonstrates that the luminophores could be excited electrochemically and the electrogenerated chemiluminescence was observed in both homogeneous solutions and on the surface of magnetic beads. The findings laid a foundation for novel ECL immunoassay methodology featuring site-specific labeling of antibodies and on-site formation of signal-generating units. Taking use of the findings and the unique advantages of the site-specific labeling approach, a sandwich immunoassay for a clinically important biomarker was conceptually proved...
September 6, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29753558/is-ecls-education-a-mandatory-requirement-for-all-critical-care-trainees-not-yet-and-not-likely
#14
EDITORIAL
Ghislaine Douflé, Eddy Fan
No abstract text is available yet for this article.
May 3, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29748999/the-link-between-nutrition-and-physical-activity-in-increasing-academic-achievement
#15
Fiona M Asigbee, Stephen D Whitney, Catherine E Peterson
BACKGROUND: Research demonstrates a link between decreased cognitive function in overweight school-aged children and improved cognitive function among students with high fitness levels and children engaging in regular physical activity (PA). The purpose of this study was to examine whether regular PA and proper nutrition together had a significant effect on academic achievement. METHODS: Using the seventh wave of the Early Childhood Longitudinal Study, Kindergarten Class 1998-99 (ECLS-K) dataset, linear regression analysis with a Jackknife resampling correction was conducted to analyze the relationship among nutrition, PA, and academic achievement, while controlling for socioeconomic status, age, and sex...
June 2018: Journal of School Health
https://www.readbyqxmd.com/read/29748076/comparison-of-levosimendan-and-milrinone-for-ecls-weaning-in-patients-after-cardiac-surgery-a-retrospective-before-and-after-study
#16
Annina Jacky, Alain Rudiger, Bernard Krüger, Markus J Wilhelm, Sebastian Paal, Burkhardt Seifert, Donat R Spahn, Dominique Bettex
OBJECTIVES: Pharmacodynamics suggests that levosimendan might be a valuable inotrope for weaning from extracorporeal life support (ECLS). As there is a paucity of evidence regarding the effectiveness and safety of such an approach, the aim was to report the authors' experiences in ECLS weaning before and after the implementation of levosimendan in clinical practice. DESIGN: Retrospective before-and-after study. SETTING: Cardiac intensive care unit of a university hospital...
April 6, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29746522/changes-in-quality-of-life-and-health-status-in-patients-with-extracorporeal-life-support-a-prospective-longitudinal-study
#17
Kang-Hua Chen, Yu-Ting Chen, Shu-Ling Yeh, Li-Chueh Weng, Feng-Chun Tsai
BACKGROUND: Extracorporeal life support (ECLS) provides emergency pulmonary and cardiac assistance for patients in respiratory or cardiac failure. Most studies evaluate the success of ECLS based on patients' survival rate. However, the trajectory of health status and quality of life (QOL) should also be important considerations. The study's aim was to explore changes in health status and QOL in adult patients weaned from ECLS who survived to hospital discharge over a one-year period. STUDY DESIGN: A prospective longitudinal study was conducted from April 2012 to September 2014...
2018: PloS One
https://www.readbyqxmd.com/read/29744220/principles-and-indications-of-extracorporeal-life-support-in-general-thoracic-surgery
#18
REVIEW
Karen McRae, Marc de Perrot
The role of extracorporeal life support (ECLS) has expanded rapidly over the past 15 years to become an important tool in advanced general thoracic surgery practice. Intra-operative and in some cases continued post-operative ECLS is redefining the scope of complex surgical care. ECLS encompasses a spectrum of temporary mechanical support that may remove CO2 , oxygenate or provide hemodynamic support or a combination thereof. The most common modalities used in general thoracic surgery include extracorporeal membrane oxygenation (ECMO), interventional lung assist device (iLA® Novalung® , Heilbronn, Germany), and extracorporeal CO2 removal (ECCO2 R)...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29739630/extracorporeal-life-support-as-salvage-therapy-for-massive-pulmonary-embolus-and-cardiac-arrest-in-pregnancy
#19
Michael E Takacs, Kristina E Damisch
BACKGROUND: Massive pulmonary embolus (PE) with prolonged cardiac arrest in the setting of pregnancy has few treatment options. Selections are further restricted if there are contraindications to the standard therapies of embolectomy and thrombolysis. We report a case of extracorporeal life support (ECLS) used as salvage therapy for a critically ill pregnant patient. CASE REPORT: A 21-year-old woman presented to a small rural hospital with chest pain, dyspnea, hypoxia, and syncope...
May 5, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29736548/electric-field-mediated-elastic-contact-lithography-of-thin-viscoelastic-films-for-miniaturized-and-multiscale-patterns
#20
Abir Ghosh, Dipankar Bandyopadhyay, Ashutosh Sharma
Elastic contact lithography (ECL) and electric field lithography (EFL) have both shown significant potential to develop large-area micropatterns on polymeric surfaces. Recently, the major challenges associated with these processes have been the improvement of the aspect ratio and reduction in the size and periodicity of the patterns fabricated. Herein, with the help of non-linear simulations, we show that combining these methods can be one recipe to overcome these limitations. We consider a linear viscoelastic film for the linear and non-linear analyses...
May 8, 2018: Soft Matter
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