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https://www.readbyqxmd.com/read/28231552/progress-and-challenges-in-electrochemiluminescent-aptasensors
#1
REVIEW
Kateryna Muzyka, Muhammad Saqib, Zhongyuan Liu, Wei Zhang, Guobao Xu
The importance of developing new diagnostic and detection technologies for the growing number of sensing challenges is rising each year. Here, we present a comprehensive and concise review on electrochemiluminescent (ECL) aptasensors by putting special emphasis on its characteristic features, advances, challenges, and applications of ECL based aptasensors. ECL is an ideal tool for constructing such sensors because of its inherent characteristics and can be easily integrated into aptamer based sensing platforms...
January 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28229199/-coronary-artery-disease-interventional-and-operative-therapeutic-options-after-cardiac-arrest
#2
M Behnes, K Mashayekhi, M Borggrefe, I Akin
Coronary artery disease (CAD) represents a common structural cause for developing cardiac arrest in older patients, whereas in young adults cardiac arrest is more often caused by cardiomyopathies and cardiac channelopathies. A structural heart disease is known in almost 50% of patients prior to cardiac arrest. The present review outlines current interventional and operative therapeutic options for patients surviving cardiac arrest. The focus is on associations between epidemiological data on the incidence of malignant arrhythmias causing cardiac arrest depending on the presence or absence of CAD...
February 22, 2017: Herz
https://www.readbyqxmd.com/read/28224784/a-highly-efficient-electrochemiluminescent-ag-nanoclusters-tio2-nanomaterials-as-signal-probe-for-ferrocene-driven-light-switch-bioanalysis
#3
Ying Zhou, Haijun Wang, Ying Zhuo, Yaqin Chai, Ruo Yuan
In this work, a ferrocene (Fc)-driven light switch biosensor for ultrasensitive detection of amyloid-β (Aβ) was designed by utilizing the highly-efficient electrochemiluminescent nanomaterials of Ag NCs/TiO2 nanoflowers (NFs) as signal labels. Through combining the TiO2 NFs as the co-reaction accelerator and dissolved O2 as the intrinsic co-reactant to in suit generate strong oxidizing intermediate radical OH•, the electrochemiluminescence (ECL) of Ag NCs on the TiO2 NFs surface could be significantly promoted in comparion with that of pure Ag NCs in solution...
February 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28221023/polymorph-dependent-electrogenerated-chemiluminescence-of-low-dimensional-organic-semiconductor-structures-for-sensing
#4
Jianmin Gu, Yahui Gao, Jingxiao Wu, Qing Li, Aixue Li, Wei Zhang, Haiyun Dong, Bin Wen, Faming Gao, Yong Sheng Zhao
A sensitive electrogenerated chemiluminescence (ECL) sensor with organic semiconductor as active materials for detecting trace amounts of molecules have been highly desired. However, the crystal structure responses of the ECL properties of the organic semiconductor materials, that is structure-property relationship, is not clear, which limits the development of the sensitive ECL sensors. Herein, for the first time, we reported a novel concept for molecular stacking arrangement dependent electrogenerated chemiluminescence properties of organic semiconductor rubrene microstructures...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28216289/biomechanical-comparison-of-fixed-loop-and-adjustable-loop-cortical-suspensory-devices-for-metaphyseal-femoral-sided-soft-tissue-graft-fixation-in-anatomic-anterior-cruciate-ligament-reconstruction-using-a-porcine-model
#5
Darin D Nye, W Ryan Mitchell, Wei Liu, Roger V Ostrander
PURPOSE: To compare the displacement, stiffness, and ultimate failure load of a fixed-loop cortical suspensory device with 2 adjustable-loop devices when positioned on metaphyseal bone. METHODS: Thirty devices (10 of each device) were positioned on the metaphyseal cortex of 30 porcine femora simulating anatomic anterior cruciate ligament femoral tunnel placement. Bovine tendons were used for soft tissue grafts, and the constructs were then cycled 1,000 times and pulled to failure, measuring displacement, stiffness, and failure load...
February 16, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28208277/ultrasensitive-ebola-virus-detection-based-on-electroluminescent-nanospheres-and-immunomagnetic-separation
#6
Zhen Wu, Jiao Hu, Tao Zeng, Zhi-Ling Zhang, Jianjun Chen, Gary Wong, Xiangguo Qiu, Wenjun Liu, George F Gao, Yuhai Bi, Dai-Wen Pang
The 2014-16 Ebola virus (EBOV) outbreak in West Africa has attracted widespread concern. Rapid and sensitive detection methods are urgently needed for diagnosis and treatment of the disease. Here, we propose a novel method for EBOV detection based on efficient amplification of electroluminescent nanospheres (ENs) coupled with immunomagnetic separation. Uniform ENs are made by embedding abundant amounts of CdSe/ZnS quantum dots (QDs) into copolymer nanospheres through simple ultrasound. Compared to QDs, ENs can enhance electroluminescence (ECL) signals by approximately 85-fold, achieving a signal-to-background ratio high enough for EBOV detection...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28199995/phakic-intraocular-lens-implantation-refractive-outcome-and-safety-in-patients-with-anterior-chamber-depth-between-2-8-and-3-0-versus-%C3%A2-3-0-mm
#7
Marta G Guerra, Andreia M M Silva, Sara H M Marques, Sofia H Melo, João A Póvoa, Conceição Lobo, Joaquim Neto Murta
PURPOSE: To compare endothelial cell (EC) variation after anterior chamber phakic intraocular lens (AC-pIOL) implantation in highly myopic patients with a preoperative anterior chamber depth (ACD) between 2.8 and 3.0 versus ≥3.0 mm. METHODS: A total of 280 eyes submitted to primary AC-pIOL implantation were analyzed. Pre- and postoperative values for uncorrected distance visual acuity, corrected distance visual acuity, spherical equivalent, ACD (endothelial surface), and EC count were collected...
February 16, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28195068/expression-of-nerve-growth-factor-in-rat-stomach-implications-for-interactions-between-endothelial-neural-and-epithelial-cells
#8
A S Tarnawski, A Ahluwalia, M K Jones, T Brzozowski
: This study was aimed to determine the expression and localization of nerve growth factor (NGF) in the gastric mucosa. Transmural gastric specimens were obtained from euthanized rats. STUDIES: 1) expression of NGF and TrkA receptor by Western blotting; 2) histological evaluation of gastric wall architecture; 3) expression of NGF using immunostaining. Immunostaining showed strong and differential expression of NGF in neural elements of gastric myenteric and submucosal plexuses; in epithelial cells: mainly in chief and progenitor cells, in enterochromaffin-like (ECL) cells; and, in endothelial cells (ECs) lining blood vessels...
December 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28194971/ultrasensitive-assay-for-telomerase-activity-via-self-enhanced-electrochemiluminescent-ruthenium-complex-doped-metal-organic-frameworks-with-high-emission-efficiency
#9
Chengyi Xiong, Wenbin Liang, Yingning Zheng, Ying Zhuo, Yaqin Chai, Ruo Yuan
Here, an ultrasensitive "off-on" electrochemiluminescence (ECL) biosensor was proposed for the determination of telomerase activity by using a self-enhanced ruthenium polyethylenimine (Ru-PEI) complex doped zeolitic imidazolate framework-8 (Ru-PEI@ZIF-8) with high ECL efficiency as an ECL indicator and an enzyme-assisted DNA cycle amplification strategy. The Ru-PEI@ZIF-8 nanocomposites were synthesized by self-enhanced Ru-PEI complex doping during the growth of zeolitic imidazolate framework-8 (ZIF-8), which presented high ECL efficiency and excellent stability...
February 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28193535/the-utility-of-nurse-managed-extracorporeal-life-support-in-an-adult%C3%A2-cardiac-intensive-care-unit
#10
Amy E Hackmann, Luke M Wiggins, Glenn P Grimes, Richard M Fogel, Felicia A Schenkel, Mark L Barr, Michael E Bowdish, Mark J Cunningham, Vaughn A Starnes
BACKGROUND: The use of extracorporeal life support (ECLS) worldwide has increased exponentially since 2009. The patient requiring ECLS demands an investment of hospital resources, including personnel. Educating bedside nurses to manage ECLS circuits broadens the availability of trained providers. METHODS: Experienced cardiothoracic intensive care unit (CTICU) nurses underwent training to manage ECLS circuits, including volume assessment, treatment of arterial blood gas values, the physiology of ECLS, and recognition of common emergencies...
February 10, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28192982/novel-double-potential-electrochemiluminescence-ratiometric-strategy-in-enzyme-based-inhibition-biosensing-for-sensitive-detection-of-organophosphorus-pesticides
#11
Hongmei Chen, Han Zhang, Ruo Yuan, Shihong Chen
Generally, electrochemiluminescence (ECL) ratiometric assays were based on the energy transfer (ET) between an emitter and a metal nanomaterial or between two different emitters. The choice of suitable energy donor-acceptor pair and the distance dependence of ET would greatly limit the practical application of ratiometric assays. This work explored a novel double-potential ECL ratiometry without the ET for organophosphorus pesticides (OPs) analysis, in which, reduced graphene oxide-CdTe quantum dots (RGO-CdTe QDs) and carboxyl-conjugated polymer dots (PFO dots) were chosen as cathodic and anodic ECL emitters, and the reactant (dissolved O2) and the product (H2O2) in enzymatic reactions served as their coreactants, respectively...
February 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192953/attomole-antigen-detection-using-self-electrochemiluminous-graphene-oxide-capped-au-l012-nanocomposite
#12
Chen Cui, Ying Chen, Dechen Jiang, Jun-Jie Zhu, Hong-Yuan Chen
In this work, a self-electrochemiluminous graphene oxide-capped Au@L012 nanocomposite was prepared as the label at carcinoembryonic (CEA) antibody to detect attomole CEA antigen. To maximize the luminescence intensity, L012 molecules (luminol analogue) were linked with poly(diallyldimethylammonium chloride) (PDDA) to form positive charged PDDA&L012 pairs, which were modified on negative charged Au@nafion nanoparticles to construct a Au@nafion@PDDA&L012 (Au@L012) complex. Graphene oxide with carboxyl groups was capped at Au@L012 complex through electrostatic interaction to serve as an effective matrix for the covalent attachment of CEA antibody...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192948/c3n4-nanosheet-modified-microwell-array-with-enhanced-electrochemiluminescence-for-total-analysis-of-cholesterol-at-single-cells
#13
Jingjing Xu, Depeng Jiang, Yanling Qin, Juan Xia, Dechen Jiang, Hong-Yuan Chen
Here, a g-C3N4 nanosheet modified microwell array providing enhanced electrochemiluminescence (ECL) and better visible sensitivity was prepared to simultaneously analyze total (membrane and intracellular) cholesterol at single cells. The detection limit for ECL visualization of hydrogen peroxide at microwell array was improved to be 500 nM that guaranteed the detection of low concentration cholesterol at single cells in parallel. To achieve single cell cholesterol analysis, the individual cells cultured at the microwell array were exposed to cholesterol oxidase generating hydrogen peroxide for luminescence analysis of membrane cholesterol, and then treated with triton X-100, cholesterol esterase, and cholesterol oxidase to produce hydrogen peroxide from intracellular cholesterol for luminescence determination...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28188377/-neuroendocrine-neoplasia-of-the-stomach-what-is-new
#14
T Knösel, C Reiter, G Schubert-Fritschle, A Altendorf-Hofmann, T Kirchner
INTRODUCTION: Neuroendocrine Neoplasms are classified according to the new WHO classification in (1.) well differentiated neuroendocrine tumors G1 (NET G1, Ki67 ≤ 2 or mitosis count <2) and (2.) well differentiated neuroendocrine tumors G2 (NET G2, Ki67 3-20 or mitosis count 2-20) and (3.) poorly differentiated neuroendocrine carcinomas G3 (NEC G3, Ki67 > 20 or mitosis count >20). MATERIAL AND METHODS: In this study 310 NENs of the Ludwig-Maximilians-University in Munich were reevaluated according to the new WHO classification...
February 10, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28177779/the-use-of-electrochemiluminescence-assays-to-predict-autoantibody-and-glycemic-progression-toward-type-1-diabetes-in-individuals-with-single-autoantibodies
#15
Jay M Sosenko, Liping Yu, Jay S Skyler, Jeffrey P Krischer, Peter A Gottlieb, David Boulware, Dongmei Miao, Jerry P Palmer, Andrea K Steck
BACKGROUND: Electrochemiluminescence (ECL) assays have shown promise for enhancing the prediction of type 1 diabetes (T1D) with autoantibodies. We thus studied relatives of T1D patients to determine whether ECL assays can be used to refine risk assessments for T1D among individuals either positive for single GADA or single mIAA autoantibodies. SUBJECTS AND METHODS: TrialNet Pathway to Prevention (PTP) study participants with either GADA or mIAA single autoantibodies were tested for ECL positivity during their participation in the TrialNet PTP study...
February 8, 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28175939/good-neurological-outcome-after-accidental-hyopthermia-presenting-with-asytole
#16
I Eckert, P Imboden, P Paal, J Koppenberg
A 43-year-old woman became exhausted and fainted on descent at 1127 MAMSL altitude and snowfall. A rescue team diagnosed asystole. With manual cardiopulmonary resuscitation (CPR) she was transported to the next extracorporeal life support (ECLS) center. Admission temperature was 20.7 °C. CPR continued until ECLS was initiated. Two days later she was awake, orientated, and with no neurological deficits. With hypothermic cardiac arrest, a favorable outcome depends on early continuous CPR, triage, and ECLS rewarming...
February 7, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28169461/harmonization-of-serum-25-hydroxycalciferol-assay-results-from-high-performance-liquid-chromatography-enzyme-immunoassay-radioimmunoassay-and-immunochemiluminescence-systems-a-multicenter-study
#17
Bahareh Nikooyeh, Siamak M Samiee, Marjan R Farzami, Hamid Alavimajd, Maliheh Zahedirad, Ali Kalayi, Nastaran Shariatzadeh, Nasrin Boroumand, Elham Golshekan, Yalda Gholamian, Tirang R Neyestani
BACKGROUND: Remarkable disagreement among different systems of 25-hydroxy vitamin D 25(OH)D assay makes decision making for both clinical and community interventions very difficult. This study aimed to harmonize the results obtained from different 25(OH)D assay systems. METHODS: A total of 275 serum samples were analyzed for 25(OH)D using DIAsource-enzyme immunoassay (EIA), DIAsource-radioimmunoassay (RIA), Roche-electrochemiluminescence (ECL), Diasorin-chemiluminescent immunoassay (CLIA), and high-performance liquid chromatography (HPLC), as the reference method...
February 7, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28166944/recover-of-peripheral-nerve-function-after-prolong-hypothermic-cardiac-arrest-in-a-porcine-model-with-extra-corporeal-life-support
#18
Benedict Kjaergaard, Cristian Sevcencu, Sigridur Olga Magnusdottir, Henrik Bygum Krarup, Thomas Nørgaard Nielsen
OBJECTIVES: Surviving long lasting cardiac arrest following accidental hypothermia has been reported after treatment with extra corporeal life support (ECLS), but there is a risk of neurologic injury. Most surviving hypothermia patients have a prolonged stay in the intensive care unit, where most patients experience polyneuropathy. Theoretically, accidental hypothermic cardiac arrest may in itself contribute to polyneuropathy. This study was designed to examine the impact of three hours of cardiac arrest at a core temperature of 20°C followed by reanimation of peripheral nerve function...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28166602/managing-the-precarious-hemostatic-balance-during-extracorporeal-life-support-implications-for-coagulation-laboratories
#19
Anne M Winkler
For the past four decades, extracorporeal life support (ECLS) has been used to treat critically ill adult and pediatric patients with cardiac and/or respiratory failure unresponsive to medical management, and there are increasing numbers of centers performing ECLS for numerous indications worldwide. Despite the progress with advancing technology, hemorrhagic and thrombotic complications occur frequently and are associated with worse outcomes, but the exact cause is often elusive or multifactorial. As a result of the interaction between blood and a nonendothelialized circuit, there is activation of coagulation, fibrinolysis, as well as an increased inflammatory response; thus, anticoagulation of the patient and circuit is necessary...
February 6, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28163328/mothers-union-statuses-and-their-involvement-in-young-children-s-schooling
#20
Robert Ressler, Chelsea Smith, Shannon Cavanagh, Robert Crosnoe
U.S. schools often expect the educational involvement of parents, which may be facilitated when parents have partners, especially a partner also invested in the child. As such, parental involvement at school and at home could be a channel of the diverging destinies of U.S. children from different families. This study applied fixed effects modeling to the Early Childhood Longitudinal Study-Kindergarten Cohort (ECLS-K) to examine the link between mothers' union statuses and their involvement behaviors. Being partnered appeared to benefit mothers' school and home involvement when children were in the primary grades, with little evidence of an additional benefit from that partnership being marital...
February 2017: Journal of Marriage and the Family
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