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https://www.readbyqxmd.com/read/27914368/highly-sensitive-fluorescence-detection-of-heparin-based-on-aggregation-induced-emission-of-a-tetraphenylethene-derivative
#1
Jiao Zheng, Tai Ye, Jinyang Chen, Li Xu, Xinghu Ji, Chuluo Yang, Zhike He
Tetraphenylethene derivatives were reported for sensitive "turn on" detection of heparin (Hep) based on the typical aggregation-induced emission (AIE). In the present strategy, three derivatives of tetraphenylethene (TPE) were designed,synthesized and compared the sensitivities for the detection of Hep. Furthermore, the (Z)-4,4'-(((1,2-diphenylethene-1,2-diyl) bis(4,1-phenylene))bis (oxy))bis(butan-1-aminium) (Z-TPE-5) was the most sensitive and chosen as the probe for Hep detection. Since Hep could be employed as a medium for inducing the aggregation of positively charged Z-TPE-5, the designed Z-TPE-5 shows excellent fluorescence response to Hep through multiple electrostatic interactions with a detection limit of 1...
November 26, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27898115/tetraphenylethylene-derivative-capped-ch3nh3pbbr3-nanocrystals-aie-activated-assembly-into-superstructures
#2
Feng Zhang, Tianye Zhou, Guogang Liu, Jianbing Shi, Haizheng Zhong, Yuping Dong
The surfaces of semiconductor nanocrystals have been known to be a very important factor in determining their optical properties. The introduction of functionalized ligands can further enhance the interactions between nanocrystals, which is beneficial for the assembly of nanocrystals. In a previous report, we developed a ligand-assisted reprecipitation method to fabricate organometal halide perovskite nanocrystals capped with octylamine and oleic acid. Here, a TPE derivative 3-(4-(1,2,2-triphenylvinyl)phenoxy)propan-1-amine, which shows a typical aggregation induced emission feature, is applied to replace octylamine to fabricate CH3NH3PbBr3 nanocrystals...
November 29, 2016: Faraday Discussions
https://www.readbyqxmd.com/read/27886315/cellular-membrane-anchored-fluorescent-probe-with-aggregation-induced-emission-characteristics-for-selective-detection-of-cu-2-ions
#3
Danni Liu, Shenglu Ji, Heran Li, Liang Hong, Deling Kong, Xin Qi, Dan Ding
The exploration of advanced fluorescent probes that can detect divalent copper (Cu(2+)) in aqueous environments and even in live organisms is particularly valuable for understanding the occurrence and development of Cu(2+)-related diseases. In this work, we report the design and synthesis of an aggregation-induced emission luminogen (AIEgen)-based probe (TPE-Py-EEGTIGYG) by integrating an AIEgen, TPE-Py, with a peptide, EEGTIGYG, which can selectively detect Cu(2+) in both aqueous solution and live cells. Peptide EEGTIGYG has dual functionality in the probe design, namely improving water solubility and providing specific cell membrane-binding ability...
November 25, 2016: Faraday Discussions
https://www.readbyqxmd.com/read/27826337/the-relationship-between-angiotensin-ii-type-1-receptor-gene-polymorphism-and-repolarization-parameters-after-a-first-anterior-acute-myocardial-infarction
#4
Onder Ozturk, Unal Ozturk, Sebnem Nergiz, M Zulkif Karahan
BACKGROUND AND OBJECTIVES: Genetic influence on T-wave peak to End (Tpe) time in patients with a first anterior acute myocardial infarction (AMI) is uncertain. A polymorphism in the angiotensin-II type 1 receptor (AT1R) gene was discovered recently. The polymorphism consists of an A or C variant, given three different possible genotypes: AA, AC, CC. The purpose of this study was to determine the effects of polymorphism of the AT1R gene polymorphism on Tpe after a first anterior AMI. SUBJECTS AND METHODS: The subjects were 142 patients (110 men, 32 women, 58±13 years) with a first anterior AMI; ten patients were excluded from this study...
November 2016: Korean Circulation Journal
https://www.readbyqxmd.com/read/27807630/-role-of-plasmapheresis-and-immunoadsorption-in-salvage-therapy-of-rheumatological-diseases
#5
M Boser, J T Kielstein
Many rheumatological diseases are either caused by specific known proteins, such as antibodies or mediated by a plethora of cytokines. Both the unspecific immunosuppressive therapy and the specific action of biologics usually require time to be effective; therefore, extracorporeal forms of treatment are increasingly being employed in severe forms of rheumatological diseases as well as in patients who cannot tolerate pharmacological treatment or where the risk of pharmacological treatment may outweigh the potential benefits...
December 2016: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/27797519/symmetry-dependent-intramolecular-charge-transfer-dynamics-of-pyrene-derivatives-investigated-by-two-photon-excitation
#6
Sangsu Lee, Dongho Kim
Intramolecular charge transfer (ICT) processes in two-photon (TP) allowed states were investigated using three pyrene derivatives N1, N2C, and N2T, which have different molecular symmetry depending on the number and position of N,N-dimethylaniline donating substituents. Based on steady-state and non-degenerate two-photon absorption measurements, we investigated femtosecond transient absorption (TA) spectra by one- (OPE) and two-photon excitation (TPE). In the analysis of TA spectra, we discovered that the transfer rate from locally excited state to the ICT state by TPE is slower than that by OPE, indicating that the energy barrier between the TP and ICT states is higher than that between the one-photon (OP) allowed and ICT states...
October 31, 2016: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/27795740/pillar-5-arene-based-amphiphilic-supramolecular-brush-copolymer-fabrication-controllable-self-assembly-and-application-in-self-imaging-targeted-drug-delivery
#7
Guocan Yu, Run Zhao, Dan Wu, Fuwu Zhang, Li Shao, Jiong Zhou, Jie Yang, Guping Tang, Xiaoyuan Chen, Feihe Huang
Supramolecular brush copolymers have attracted continuing interest due to their unusual architectures, fascinating properties, and potential applications in many fields involving smart stimuli-responsive drug delivery systems. Herein, the first pillararene-based amphiphilic supramolecular brush copolymer (P5-PEG-Biotin⊃PTPE) was constructed on the basis of the host-guest molecular recognition between a water-soluble pillar[5]arene (P5) and a viologen salt (M). P5-PEG-Biotin⊃PTPE self-assembled into supramolecular nanoparticles (SNPs), which were utilized as a self-imaging drug delivery vehicle by taking advantage of the aggregation-induced emission (AIE) effect...
October 28, 2016: Polymer Chemistry
https://www.readbyqxmd.com/read/27789124/use-of-the-apache-ii-score-to-assess-impact-of-therapeutic-plasma-exchange-for-critically-ill-patients-with-hypertriglyceride-induced-pancreatitis
#8
Shazia Nakhoda, Ann B Zimrin, Maria R Baer, Jennie Y Law
OBJECTIVES: Hypertriglyceridemic (HTG) pancreatitis carries significant morbidity and mortality and often requires intensive care unit (ICU) admission. Therapeutic plasma exchange (TPE) rapidly lowers serum triglyceride (TG) levels. However, evidence supporting TPE for HTG pancreatitis is lacking. METHODS: Ten patients admitted to the ICU for HTG pancreatitis underwent TPE at our institution from 2005-2015. We retrospectively calculated the Acute Physiology and Chronic Health Examination II (APACHE II) score at the time of initial TPE and again after the final TPE session to assess the impact of triglyceride apheresis on morbidity and mortality associated with HTG pancreatitis...
October 17, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27785856/minimal-t-wave-representation-and-its-use-in-the-assessment-of-drug-arrhythmogenicity
#9
Saeed Shakibfar, Claus Graff, Jørgen K Kanters, Jimmi Nielsen, Samuel Schmidt, Johannes J Struijk
BACKGROUND: Recently, numerous models and techniques have been developed for analyzing and extracting features from the T wave which could be used as biomarkers for drug-induced abnormalities. The majority of these techniques and algorithms use features that determine readily apparent characteristics of the T wave, such as duration, area, amplitude, and slopes. METHODS: In the present work the T wave was down-sampled to a minimal rate, such that a good reconstruction was still possible...
October 27, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27776594/outcomes-of-standard-and-tailored-anti-tuberculosis-regimens-in-patients-with-tuberculous-pleural-effusion
#10
C H Kim, J K Lim, D H Lee, S S Yoo, S Y Lee, S I Cha, J Y Park, J Lee
BACKGROUND: In an era of increasing concerns about drug resistance, there are limited data on treatment outcomes and recurrence rates after standard short-course anti-tuberculosis treatment in patients with culture-negative tuberculous pleural effusion (TPE). OBJECTIVE: To compare treatment outcomes and recurrence rates between a standard anti-tuberculosis regimen with negative culture and unavailable drug susceptibility testing (DST) data, and a tailored anti-tuberculosis regimen based on individual DST data...
November 2016: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/27761292/pediatric-fulminant-leptospirosis-complicated-by-pericardial-tamponade-macrophage-activation-syndrome-and-sclerosing-cholangitis
#11
Osman Yeşilbaş, Hasan Serdar Kıhtır, Hamdi Murat Yıldırım, Nevin Hatipoğlu, Esra Şevketoğlu
BACKGROUND: Leptospirosis is a zoonotic infectious disease caused by pathogenic spirochetes of the genus Leptospira. Although it is usually asymptomatic and self-limited, severe potentially fatal illness accompanied by multi-organ failure may occur. CASE REPORT: Here we report an unusual case of severe leptospirosis successfully treated with continuous venovenous hemofiltration (CVVHF) and therapeutic plasma exchange (TPE). The patient presented with pericardial tamponade, renal failure and macrophage activation syndrome, and later suffered prolonged jaundice and sclerosing cholangitis during hospitalization in the pediatric intensive care unit (PICU)...
September 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27757584/proteinuria-in-dent-disease-a-review-of-the-literature
#12
Youri van Berkel, Michael Ludwig, Joanna A E van Wijk, Arend Bökenkamp
BACKGROUND: Dent disease is a rare X-linked recessive proximal tubulopathy caused by mutations in CLCN5 (Dent-1) or OCRL (Dent-2). As a rule, total protein excretion (TPE) is low in tubular proteinuria compared with glomerular disease. Several authors have reported nephrotic-range proteinuria (NP) and glomerulosclerosis in Dent disease. Therefore, we aimed to analyze protein excretion in patients with documented CLCN5 or OCRL mutations in a systematic literature review. DESIGN: PubMed and Embase were searched for cases with documented CLCN5 or OCRL mutations and (semi-)quantitative data on protein excretion...
October 18, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27753472/two-photon-photoexcited-photodynamic-therapy-and-contrast-agent-with-antimicrobial-graphene-quantum-dot
#13
Wen-Shuo Kuo, Chia-Yuan Chang, Hua-Han Chen, Chih-Li Lilian Hsu, Jiu-Yao Wang, Hui-Fang Kao, Lawrence Chao-Shan Chou, Yi-Chun Chen, Shean-Jen Chen, Wen-Tsan Chang, Shih-Wen Tseng, Ping-Ching Wu, Ying-Chih Pu
A graphene quantum dot (GQD) used as the photosensitizer with high two-photon absorption in the near-infrared region, a large absolute cross section of two-photon excitation (TPE), strong two-photon luminescence and impressive two-photon stability could be used for dual modality two-photon photodynamic therapy (PDT) and two-photon bioimaging with an ultrashot pulse laser (or defined as TPE). In this study, a GQD efficiently generated reactive oxygen species coupled with TPE, which highly increased the effective PDT ability of both gram-positive and -negative bacteria, with ultra-low energy and an extremely short photoexcitation time generated by TPE...
October 18, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27743708/therapeutic-plasma-exchange-in-primary-hemophagocytic-lymphohistiocytosis-reports-of-two-cases-and-a-review-of-the-literature
#14
Mehmet Bosnak, Seher Erdogan, E Habibe Aktekin, Ali Bay
We report two children who were diagnosed as having primary hemophagocytic syndrome and who successfully underwent therapeutic plasma exchange (TPE). The first patient was a 6-month-old girl diagnosed with HLH who was admitted to the pediatric intensive care unit. The patient's clinical condition worsened on the 9th day of the HLH-2004 treatment protocol. Her ferritin level was found 50.000 ng/mL, and TPE was performed for 9 sessions, after which her clinical condition and laboratory findings improved. The patient is still on the HLH-2004 protocol and waits for a suitable stem cell transplantation donor...
September 28, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27740703/metal-complexes-for-two-photon-photodynamic-therapy-a-cyclometallated-iridium-complex-induces-two-photon-photosensitization-of-cancer-cells-under-near-ir-light
#15
Luke McKenzie, Igor Sazanovich, Elizabeth Baggaley, Mickaële Bonneau, Véronique Guerchais, Gareth Williams, Julia Weinstein, Helen E Bryant
Photodynamic therapy (PDT) uses photosensitizers (PS) which only become cytotoxic upon light-irradiation. Transition metal complexes are highly promising PS due to long excited state lifetimes, and photostability. However, these complexes usually absorb higher-energy UV/Visible light, whilst the optimal tissue transparency is in the lower-energy NIR region. Two-photon excitation (TPE) can overcome this dichotomy, with simultaneous absorption of two lower-energy NIR-photons populating the same PS-active excited state as one higher-energy photon...
October 14, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27739616/selective-host-guest-cocrystallization-of-pyridine-functionalized-tetraphenylethylene-with-phthalic-acids-and-multicolor-emission-of-the-cocrystals
#16
Yan-Song Zheng, Hai-Tao Feng, Jun Luo, Jia-Bin Xiong, Wen-Fang Feng, Desuo Yang
Tetraphenylethylene (TPE) and its derivatives are the most typical and most widely studied organic compounds with aggregation-induced emission (AIE) characteristics. Due to their propeller-like structures, V-like clefts exist between the aryl rings, making them promising as host compounds. However, such possibility is seldom explored. Here, we reported for the first time that TPE derivatives (TPE-Pys) bearing two or four pyridine rings at the para-position of the phenyl rings could selectively include triangular (Δ-like) m-phthalic acid from a mixture of o-, m- and p-phthalic acids due to their shape complementary to offer host-guest cocrystals, which showed redder emission than TPE-Pys themselves...
October 14, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27736060/photophysical-properties-of-organoplatinum-ii-compounds-and-derived-self-assembled-metallacycles-and-metallacages-fluorescence-and-its-applications
#17
Manik Lal Saha, Xuzhou Yan, Peter J Stang
Over the past couple of decades, coordination-driven self-assembly has evolved as a broad multidisciplinary domain that not only covers the syntheses of aesthetically pleasing supramolecular architectures but also emerges as a method to form new optical materials, chemical sensors, theranostic agents, and compounds with light-harvesting and emissive properties. The majority of these applications depend upon investigations that reveal the photophysical nature and electronic structure of supramolecular coordination complexes (SCCs), including two-dimensional (2D) metallacycles and three-dimensional (3D) metallacages...
October 13, 2016: Accounts of Chemical Research
https://www.readbyqxmd.com/read/27725052/meta-analysis-of-indian-studies-evaluating-adenosine-deaminase-for-diagnosing-tuberculous-pleural-effusion
#18
A N Aggarwal, R Agarwal, I S Sehgal, S Dhooria, D Behera
OBJECTIVE: To determine the diagnostic accuracy of pleural fluid adenosine deaminase (ADA) in diagnosing tuberculous pleural effusion (TPE) among Indian patients using systematic review and meta-analysis. DESIGN: The PubMed, Embase, IndMED and Cochrane databases and other relevant publications were searched to identify Indian studies evaluating the sensitivity and specificity of ADA in diagnosing TPE. Pooled diagnostic accuracy measures and 95% confidence intervals (95%CI) were generated using a bivariate random-effects model, and examined using forest plots and hierarchical summary receiver operating characteristic (HSROC) curves...
October 2016: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/27723803/a-comparison-of-multiscale-permutation-entropy-measures-in-on-line-depth-of-anesthesia-monitoring
#19
Cui Su, Zhenhu Liang, Xiaoli Li, Duan Li, Yongwang Li, Mauro Ursino
OBJECTIVE: Multiscale permutation entropy (MSPE) is becoming an interesting tool to explore neurophysiological mechanisms in recent years. In this study, six MSPE measures were proposed for on-line depth of anesthesia (DoA) monitoring to quantify the anesthetic effect on the real-time EEG recordings. The performance of these measures in describing the transient characters of simulated neural populations and clinical anesthesia EEG were evaluated and compared. METHODS: Six MSPE algorithms-derived from Shannon permutation entropy (SPE), Renyi permutation entropy (RPE) and Tsallis permutation entropy (TPE) combined with the decomposition procedures of coarse-graining (CG) method and moving average (MA) analysis-were studied...
2016: PloS One
https://www.readbyqxmd.com/read/27723774/combining-limited-multiple-environment-trials-data-with-crop-modeling-to-identify-widely-adaptable-rice-varieties
#20
Tao Li, Jauhar Ali, Manuel Marcaida, Olivyn Angeles, Neil Johann Franje, Jastin Edrian Revilleza, Emmali Manalo, Edilberto Redoña, Jianlong Xu, Zhikang Li
Multi-Environment Trials (MET) are conventionally used to evaluate varietal performance prior to national yield trials, but the accuracy of MET is constrained by the number of test environments. A modeling approach was innovated to evaluate varietal performance in a large number of environments using the rice model ORYZA (v3). Modeled yields representing genotype by environment interactions were used to classify the target population of environments (TPE) and analyze varietal yield and yield stability. Eight Green Super Rice (GSR) and three check varieties were evaluated across 3796 environments and 14 seasons in Southern Asia...
2016: PloS One
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