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Rolf Bambauer, Reinhard Latza, Daniel Burgard, Ralf Schiel
Since the mid 1970s, when membrane modules became available, plasma separation techniques have gained in importance especially in the past few years. The advantages of this method are a complete separation of the corpuscular components from the plasma and due to increased blood flow rate and higher efficacy. Systemic autoimmune diseases based on an immune pathogenesis produce autoantibodies and circulating immune complexes, which cause inflammation in the tissues of various organs. In most cases, these diseases have a poor prognosis without treatment...
January 12, 2017: Therapeutic Apheresis and Dialysis
Ning Ning Li, Jun Zhi Li, Peng Liu, Dicky Pranantyo, Lei Luo, Jiu Cun Chen, En-Tang Kang, Xue Feng Hu, Chang Ming Li, Li Qun Xu
A fluorescence technique to investigate the interactions between bacterial membranes and an aggregation-induced emission (AIE) luminogen-decorated AMP (TPE-AMP) was reported. Our simple and fast method consists of mixing TPE-AMP and bacterial suspensions and recording the fluorescence signals by flow cytometry and confocal microscopy in a "non-washing" manner.
January 12, 2017: Chemical Communications: Chem Comm
Vikas Ostwal, Reena Engineer, Anant Ramaswamy, Arvind Sahu, Saurabh Zanwar, Suprita Arya, Supriya Chopra, Munita Bal, Prachi Patil, Ashwin Desouza, Avanish Saklani
BACKGROUND: Role of chemotherapy in patients who continue to have unresectable disease after pre-operative chemo-radiotherapy (CRT) remains largely unaddressed. METHODS: Patients with LA rectal cancer from January 2013 to June 2015 were evaluated. Post-CRT, patients, who were deemed unresectable, were considered for further interim chemotherapy (i-CT). RESULTS: Seventy six patients (15%) with median age of 38.5 years received i-CT after CRT...
December 2016: Journal of Gastrointestinal Oncology
Chunqiu Zhang, Tingbin Zhang, Shubin Jin, Xiangdong Xue, Xiaolong Yang, Ningqiang Gong, Jinchao Zhang, Paul C Wang, Jian-Hua Tian, Jinfeng Xing, Xing-Jie Liang
High-efficiency gene transfer and suitably low cytotoxicity are the main goals of gene transfection systems based on nonviral vectors. In addition, it is desirable to track the gene transfer process in order to observe and explain the mechanism. Herein, inspired by viral structures which are optimized for gene delivery, we designed a small-molecule gene vector (TR4) with aggregation-induced emission properties by capping a peptide containing four arginine residues with tetraphenylethene (TPE) and a lipophilic tail...
January 11, 2017: ACS Applied Materials & Interfaces
Long Zhao, Tao Wang, Qiang Wu, Yuan Liu, Zhoujiang Chen, Xiaohong Li
"Turn-on" or "turn off" probes remain challenges in the establishmwnt of sensitive, easily operated and reliable methods for in situ monitoring bioactive substances. In the current study, electrospun fibrous strips are designed to provide straightforward observations of ratiometric color changes with naked eyes in the presence of serum heparin or urine trypsin. A tetraphenylethene (TPE) derivative is constructed and, along with phloxine B, is grafted on fibers, followed by protamine adsorption to induce static quenching of phloxine B and aggregation-induced emission of the TPE derivative...
January 9, 2017: ACS Applied Materials & Interfaces
Juan Pablo Córdoba, Carolina Larrarte, Cristina Estrada, Daniel G Fernández-Ávila
INTRODUCTION: Each day, evidence accumulates related to the use of therapeutic plasma exchange (TPE) in patients with rheumatic diseases. San Ignacio University Hospital has recorded all of the TPE sessions performed by the institution's apheresis group. OBJECTIVE: To describe the TPE experience of patients with rheumatologic diseases in a hospital setting (?). METHODS: Descriptive, observational, retrospective analysis. This study included analyses of the TPE sessions that were performed in patients with rheumatic diseases from November 2009 to November 2013...
December 16, 2016: Revista Brasileira de Reumatologia
Brittney Williams, Michael A Mazzeffi, Pablo G Sanchez, Si M Pham, Zachary Kon, Kenichi A Tanaka
Acquired antithrombin (AT) deficiency is not uncommon in cardiothoracic surgery because of heparin exposure and dilutional or consumptive losses. We report a case of acquired AT deficiency and resultant multiple deep vein thrombosis in a patient with pulmonary fibrosis on veno-venous extracorporeal membrane oxygenation who underwent double lung transplantation with intraoperative therapeutic plasma exchange (TPE) as a part of an immunomodulation regimen for allosensitization. Preoperative heparin anticoagulation resulted in AT deficiency, which was further exacerbated by TPE using albumin...
January 1, 2017: A & A Case Reports
Long Zhao, Songzhi Xie, Xiaojie Song, Jiaojun Wei, Zhao Zhang, Xiaohong Li
The development of rapid, convenient and reliable assays for monitoring alkaline phosphatase (ALP) levels is valuable for clinical diagnoses and biomedical research. In the current study, a ratiometric assay of ALP activity has been realized by covalent immobilization of fluorescein onto polyethylene terephthalate (PET) fibers, followed by electrostatic adsorption of bisquaternary ammonium salt of tetraphenylethene (TPE-2N(+)). In the absence of ALP, the complex formation between phosphorylated fluorescein and TPE-2N(+) results in the aggregation-induced emission (AIE) of TPE at 471nm...
December 11, 2016: Biosensors & Bioelectronics
Xiaomei Liu, Gaolin Liang
The aggregation-induced emission (AIE) effect has recently been widely applied for biomarker sensing. But developing "smart" strategies to effectively aggregate the AIE fluorogen and additionally enhance the fluorescence emission remain challenging. In this work, by integrating a biocompatible condensation reaction with an AIE fluorogen, we rationally designed a "smart" dual AIE probe Ac-Arg-Val-Arg-Arg-Cys(StBu)-Lys(TPE)-CBT (1) for enhanced fluorescence sensing furin activity in vitro and in living cells...
December 21, 2016: Chemical Communications: Chem Comm
Tatsuya Kawai, Yoshiyuki Ozawa, Masaki Ogawa, Kazuya Ohashi, Kazushi Suzuki, Yuta Shibamoto
BACKGROUND: The effects of the reduction of low-energy X-ray spectrum on lung perfusion images created by dual-energy CT have not been well evaluated. The aim of this study is to investigate the reliability of lung perfusion blood volume (PBV) images created by dual-energy CT (DECT) equipped with or without a tin filter, focusing on its accuracy adjacent to high-attenuation areas. MATERIAL/METHODS: Among 176 patients who underwent DECT for suspicion of pulmonary embolism, 38 patients (mean age, 64; range, 16 to 83 years) without apparent evidence of pulmonary embolism were evaluated in this study...
2016: Polish Journal of Radiology
Verica Misanovic, Danka Pokrajac, Smail Zubcevic, Admir Hadzimuratovic, Samra Rahmanovic, Selma Dizdar, Asmir Jonuzi, Edin Begic
INTRODUCTION: Plasmapheresis also known as a therapeutic plasma exchange (TPE) is extracorporeal procedure by which individual components of plasma that are harmful or blood cells can be removed from organism by using a blood separation technology. AIM: To present the results of the implementation of plasmapheresis in children in the Department of Pediatric Intensive Care of Pediatric Clinic, Clinical center of Sarajevo University, Bosnia and Herzegovina. PATIENTS AND METHODS: Research (period from December 2011 to June 2016) analyzed 66 plasmapheresis (11 patients-6 plasmapheresis per patient)...
October 2016: Medical Archives
Zece Zhu, Bo Song, Jingli Yuan, Chuluo Yang
A tetraphenylethene (TPE) group that exhibits aggregation-induced emission is incorporated into the ligand of a Eu(III) complex (TPEEu) to sensitize the excited state of Eu(III). In steady-state measurements, TPEEu exhibits weak luminescence when dissolved in aqueous solutions even at a high concentration level, but emits strong fluorescence of TPE and phosphorescence of Eu(III) upon binding with bovine serum albumin. With a delay time of 0.05 ms and a gate time of 1.0 ms in time-resolved measurements, only phosphorescent emission of Eu(III) is observed with a high on/off ratio...
December 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Wanil Kim, Andrew T Ludlow, Jaewon Min, Jerome D Robin, Guido Stadler, Ilgen Mender, Tsung-Po Lai, Ning Zhang, Woodring E Wright, Jerry W Shay
Telomerase is expressed in early human development and then becomes silenced in most normal tissues. Because ~90% of primary human tumors express telomerase and generally maintain very short telomeres, telomerase is carefully regulated, particularly in large, long-lived mammals. In the current report, we provide substantial evidence for a new regulatory control mechanism of the rate limiting catalytic protein component of telomerase (hTERT) that is determined by the length of telomeres. We document that normal, young human cells with long telomeres have a repressed hTERT epigenetic status (chromatin and DNA methylation), but the epigenetic status is altered when telomeres become short...
December 2016: PLoS Biology
Amy R Marts, Joshua C Kaine, Robert R Baum, Vivien L Clayton, Jami R Bennett, Laura J Cordonnier, Robert McCarrick, Abed Hasheminasab, Laura A Crandall, Christopher J Ziegler, David L Tierney
Paramagnetic resonance studies (EPR, ESEEM, ENDOR, and NMR) of a series of cobalt(II) bis-trispyrazolylmethane tetrafluoroborates are presented. The complexes studied include the parent, unsubstituted ligand (Tpm), two pyrazole-substituted derivatives (4Me and 3,5-diMe), and tris(1-pyrazolyl)ethane (Tpe), which includes a methyl group on the apical carbon atom. NMR and ENDOR establish the magnitude of (1)H hyperfine couplings, while ESEEM provides information on the coordinated (14)N. The data show that the pyrazole 3-position is more electron rich in the Tpm analogues, that the geometry about the apical atom influences the magnetic resonance, and that apical atom geometry appears more fixed in Tpm than in Tp...
January 3, 2017: Inorganic Chemistry
Hande Ozportakal, Abdullah Ozkok, Ozlem Alkan, Ahmet Sait Bulut, Memduha Boyraz, Mehmet Inanir, Goksel Acar, Ali Riza Odabas
PURPOSE: Hemodialysis (HD) patients are known to have high cardiovascular mortality rate. Sudden cardiac death (SCD) due to arrhythmias causes most of the cardiac deaths. HD per se may lead to ECG abnormalities and ventricular arrhythmias. Monitoring ECG parameters such as corrected QT interval, QT dispersion (QTd), Tpe interval may be useful to stratify the patients with high risk of arrhythmia and SCD. Herein we aimed to investigate the effects of changes in serum electrolyte levels and pH on ECG parameters before and after the HD...
December 10, 2016: International Urology and Nephrology
Geraldine Dowling, Pierce V Kavanagh, Brian Talbot, John O'Brien, Gary Hessman, Gavin McLaughlin, Brendan Twamley, Simon D Brandt
2-[(Diphenylmethyl)sulfinyl]acetamide (modafinil) is commonly prescribed for the treatment of narcolepsy. Increasing popularity and off-label use as a cognitive enhancer has resulted in a reputation as an intelligence boosting 'wonder drug'. Common alternatives available from online shops and other retail outlets include 2-[(diphenylmethyl)sulfinyl]-N-hydroxyacetamide (adrafinil), 2-{[bis(4-fluorophenyl)methyl]sulfinyl}acetamide (CRL-40,940), 2-{[bis(4-fluorophenyl)methyl]sulfinyl}-N-hydroxyacetamide (CRL-40,941), and N-methyl-4,4-difluoro-modafinil (modafiendz), respectively...
December 8, 2016: Drug Testing and Analysis
Dan-Dan Tao, Qian Wang, Xiao-Sheng Yan, Na Chen, Zhao Li, Yun-Bao Jiang
We report that in the Ag(+) coordination polymers of a chiral thiol ligand containing an AIE fluorophore, tetraphenylethene (TPE), the TPE chromophores experience H-type aggregation, and yet a substantial enhancement of the fluorescence is observed, though to a lesser extent than that in the aggregates of the thiol ligand itself, which undergoes J-type aggregation. We show that this is not due to the difference in the freedom of the rotation of the fluorophore in the two types of aggregate, but is due to a small increase in the radiation rate constant in the coordination polymers while the much higher radiationless rate constant remains more or less unchanged...
December 20, 2016: Chemical Communications: Chem Comm
Edward J Tanner, Erica Dun, Yukio Sonoda, Alexander B Olawaiye, Dennis S Chi
OBJECTIVES: Complete cytoreduction of ovarian cancer often requires excision or ablation of bowel serosa implants. Both argon beam coagulator (ABC) and thermal plasma energy (TPE) (PlasmaJet; PlasmaSurgical, Roswell, Ga) have been used to ablate bowel serosa implants. Our objective was to identify comparable power settings as well as determine the rate of bowel perforation, depth of thermal injury, and extent of inflammatory response with ABC versus TPE in a porcine model. MATERIALS AND METHODS: Nine pigs underwent vaporization of small bowel and colon serosa according to assigned treatment group (TPE vs ABC) and settings (ABC: 30, 50, and 70 W; TPE: Cut 10U, 20U, and 30U and Coagulation 10U, 20U, and 30U)...
January 2017: International Journal of Gynecological Cancer
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...
April 15, 2017: Biosensors & Bioelectronics
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
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