Read by QxMD icon Read


Vagner Bezerra Dos Santos, Daniela Daniel, Melina Singh, Claudimir Lucio do Lago
A capillary electrophoresis-tandem mass spectrometry (CE-MS/MS) method for amphetamine (AM), phentermine (PTM), methamphetamine (MAM), methylenedioxyamphetamine (MDA), methylenedioxymethamphetamine (MDMA), and methylenedioxyethylamphetamine (MDEA) in commercial samples of homeopathic and phytotherapic medicines and dietary supplements is presented. The samples were submitted to a modified QuEChERS extraction procedure (at apparent pH 13) followed by electrophoretic separation in 0.1molL(-1) formic acid electrolyte (pH 2...
October 17, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
J Stevanović, L A de Jong, B S Kappelhoff, E P Dvortsin, M Voorhaar, M J Postma
BACKGROUND: Dabigatran was proven to have similar effect on the prevention of recurrence of venous thromboembolism (VTE) and a lower risk of bleeding compared to vitamin K antagonists (VKA). The aim of this study is to assess the cost-effectiveness (CE) of dabigatran for the treatment and secondary prevention in patients with VTE compared to VKAs in the Dutch setting. METHODS: Previously published Markov model was modified and updated to assess the CE of dabigatran and VKAs for the treatment and secondary prevention in patients with VTE from a societal perspective in the base-case analysis...
2016: PloS One
Hye Jin Yoo, Sung Hwan Hong, Hye Yeon Oh, Ja-Young Choi, Hee Dong Chae, Joong Mo Ahn, Heung Sik Kang
Purpose To determine the agreement of fat-suppressed (FS) fluid-attenuated inversion-recovery (FLAIR) magnetic resonance (MR) imaging and contrast material-enhanced (CE) T1-weighted MR imaging for the assessment of peripatellar synovitis. Materials and Methods The institutional review board approved this retrospective study and waived the requirement for patient informed consent. Thirty-three patients with knee pain underwent 3-T MR imaging. The protocol consisted of routine clinical sequences followed by the FLAIR FS sequence (inversion time, 2200 msec) and CE T1-weighted imaging...
October 24, 2016: Radiology
Xiaoli Gao, Yan Song, Guixia Liu, Xiangting Dong, Jinxian Wang, Wensheng Yu
As a new class of non-rare-earth red phosphors for high-efficiency warm white light-emitting diodes (white LEDs), Mn(4+) ion activated fluoride compounds have been extensively investigated recently and hold the potential to supersede commercial rare earth doped nitride phosphors. Herein, a series of Mn(4+) ions doped BaTiF6 phosphors have been prepared via the hydrothermal route using citric acid as a surfactant. After a systematic investigation, we illustrate the effects of reaction time, nominal concentration of HF solution, and reaction temperature on the luminescence performance of the phosphor...
October 24, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Jie Tang, Ce Chen, Cheng Zha, Zhaohua Wang, Chen Zhang, Linli Zeng, Baiqing Li
Objective To investigate the differences of proportions of tumor necrosis factor α (TNF-α)-producing cells in peripheral blood γδ T cells stimulated with Mycobacterium tuberculosis heat resistant antigen (MTB-HAg) among patients with pulmonary tuberculosis (PTB), latent tuberculosis infection (LTBI) and healthy subjects (HC). Methods The peripheral blood specimens were collected from 15 normal adults, which were divided into HC group (n=9) and LTBI group (n=6), by enzyme-linked immunospot (ELISPOT) kit for diagnosis of Mycobacterium tuberculosis infection, and 12 patients with active PTB...
November 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
Yuqing Chen, Lixiang Liu, Yuanna Luo, Minghui Chen, Yang Huan, Ruili Fang
STUDY OBJECTIVE: To evaluate the prevalence and impact of chronic endometritis (CE) in patients with intrauterine adhesions (IUAs). DESIGN: Prospective cohort study between May 2015 and December 2015. DESIGN: Classification:Canadian Task Force classification II-2 SETTING: University-affiliated Hospital. PATIENT(S): Eighty-two women with moderate to severe IUA.
 INTERVENTION(S): Transcervical resection of adhesions (TCRA) and endometrial biopsy were performed in all patients...
October 20, 2016: Journal of Minimally Invasive Gynecology
Nir Uriel, Sirtaz Adatya, Jiří Malý, Eric Kruse, Daniel Rodgers, Gerald Heatley, Aleš Herman, Poornima Sood, Dominik Berliner, Johann Bauersachs, Axel Haverich, Michael Želízko, Jan D Schmitto, Ivan Netuka
BACKGROUND: The HeartMate 3 (HM3) is a Conformiteé Européenne (CE) mark-approved left ventricular assist device (LVAD) with a fully magnetically levitated rotor with features consisting of a wide range of operational speeds, wide flow paths and an artificial pulse. We performed a hemodynamic and echocardiographic evaluation of patients implanted with the HM3 LVAD to assess the speed range for optimal hemodynamic support. METHODS: Sixteen HM3 patients underwent pump speed ramp tests with right heart catheterization (including central venous pressure [CVP], pulmonary artery pressure, pulmonary capillary wedge pressure [PCWP] and blood pressure [BP]) and 3-dimensional echocardiography (3DE)...
July 17, 2016: Journal of Heart and Lung Transplantation
Michelle M A C Ribeiro, Thiago C Oliveira, Alex D Batista, Rodrigo A A Muñoz, Eduardo M Richter
This paper reports for the first time, a method for simultaneous determination of naphazoline (NPZ) and zinc (Zn) using an analytical separation technique (capillary electrophoresis with capacitively coupled contactless conductivity detection -CE-C(4)D). A single run is possible every 55s (sampling rate=65h(-1)). The separation by CE-C(4)D was achieved on a fused silica capillary (50cm length - 10cm effective, 50μm i.d.) with a background electrolyte (BGE) composed by 20mmolL(-1) of 2-(morpholin-4-yl)ethane-1-sulfonic acid (MES) and 20mmolL(-1) of histidine (HIS) (pH 6...
October 12, 2016: Journal of Chromatography. A
Shan Chong, Guangming Zhang, Zhongheng Wei, Nan Zhang, Ting Huang, Yucan Liu
This paper studies the sonocatalytic degradation of diclofenac in water using FeCeOx-catalyzed ultrasound. The effects of pre-adsorption and gas addition were investigated. Nitrogen adsorption/desorption, SEM, XRD, Raman and XPS analyses of FeCeOx before and after sonication were characterized. The proposed mechanism was based on the microstructure changes of FeCeOx and reactive-species-scavenging performances. The results show that FeCeOx has excellent performance in catalyzing an ultrasonic system in water, and 80% of diclofenac was removed in 30min ([Diclofenac]=20mg/L, FeCeOx amount=0...
January 2017: Ultrasonics Sonochemistry
Porcelli Stefano, Crisafulli Concetta, Donato Luigi, Calabrò Marco, Politis Antonis, Liappas Ioannis, Albani Diego, Atti Anna Rita, Salfi Raffaele, Raimondi Ilaria, Forloni Gianluigi, Papadimitriou George N, De Ronchi Diana, Serretti Alessandro
INTRODUCTION: With the increase of the population's average age, Alzheimer's disease (AD) is becoming one of the most disabling diseases worldwide. Recently, neurodevelopment processes have been involved in the AD etiopathogenesis. Genetic studies in this field could contribute to our knowledge and suggest new molecular targets for possible treatments. METHODS: Our primary aim was to investigate the associations among single nucleotide polymorphisms (SNPs) within neurodevelopment related genes (BDNF, ST8SIA2, C15orf32, NCAPG2, ESYT2, WDR60, LOC154822, VIPR2, GSK3B, NR1I2, ZNF804A, SP4) and AD...
November 15, 2016: Journal of the Neurological Sciences
P Zeman
Tick-borne encephalitis (TBE) is peculiar due to its unstable dynamics with profound inter-annual fluctuations in case numbers - a phenomenon not well understood to date. Possible reasons - apart from variable human contact with TBE foci - include external factors, e.g. climatic forcing, autonomous oscillations of the disease system itself, or a combined action of both. Spectral analysis of TBE data from six regions of central Europe (CE) revealed that the ostensibly chaotic dynamics can be explained in terms of four superposed (quasi-)periodical oscillations: a quasi-biennial, triennial, pentennial, and a decadal cycle...
October 24, 2016: Epidemiology and Infection
Joel Jerushan Thevarajah, Matthew Paul Van Leeuwen, Herve Cottet, Patrice Castignolles, Marianne Gaborieau
Chitosan is often characterized by its average degree of acetylation. To increase chitosan's use in various industries, a more thorough characterization is necessary as the acetylation of chitosan affects properties such as dissolution and mechanical properties of chitosan films. Despite the poor solubility of chitosan, free solution capillary electrophoresis (CE) allows a robust separation of chitosan by the degree of acetylation. The distribution of degrees of acetylation of various chitosan samples was characterized through their distributions of electrophoretic mobilities...
October 19, 2016: International Journal of Biological Macromolecules
Marcelina Pyschik, Marcel Klein-Hitpaß, Sabrina Girod, Martin Winter, Sascha Nowak
In this study, an optimized method using capillary electrophoresis (CE) with a direct contactless conductivity detector (C(4) D) for a new application field is presented for the quantification of fluoride in common used lithium - ion battery (LIB) electrolyte using LiPF6 in organic carbonate solvents and in ionic liquids (ILs) after contacted to Li metal. The method development for finding the right buffer and the suitable CE conditions for the quantification of fluoride was investigated. The results of the concentration of fluoride in different LIB electrolyte samples were compared to the results from the ion-selective electrode (ISE)...
October 22, 2016: Electrophoresis
Rosemarie Forstner, Isabelle Thomassin-Naggara, Teresa Margarida Cunha, Karen Kinkel, Gabriele Marselli, Rahel Kubik-Huch, John A Spencer, Andrea Rockall
: An update of the 2010 published ESUR recommendations of MRI of the sonographically indeterminate adnexal mass integrating functional techniques is provided. An algorithmic approach using sagittal T2 and a set of transaxial T1 and T2WI allows categorization of adnexal masses in one of the following three types according to its predominant signal characteristics. T1 'bright' masses due to fat or blood content can be simply and effectively determined using a combination of T1W, T2W and FST1W imaging...
October 21, 2016: European Radiology
Arun R Pandiri, Roy L Kerlin, Peter C Mann, Nancy E Everds, Alok K Sharma, L Peyton Myers, Thomas J Steinbach
One of the principal challenges facing a toxicologic pathologist is to determine and differentiate a true adverse effect from a nonadverse or an adaptive response. Recent publications from the Society of Toxicologic Pathology (STP) and the European STP provide guidance for determining and communicating adversity in nonclinical toxicology studies. In order to provide a forum to inform and engage in a discussion on this important topic, a continuing education (CE) course was held during the 2016 STP Annual meeting in San Diego, CA...
October 21, 2016: Toxicologic Pathology
Yuanyuan Wu, Vincent T Remcho
Capillary electrophoresis (CE) coupled with UV absorbance detection has been applied as an analysis tool for carbon dots (C-dots), which were hydrothermally synthesized from precursors citric acid (CA) and ethylene diamine (EDA). An alkaline working buffer (100mM tris acetate, pH 8.4) was found to be optimal for rapid and reliable analysis of C-dots. A calibration curve was established over a broad concentration range (0.5-10mg/mL) with excellent linearity (R(2)=0.9989). The CE method was also applied to enhance understanding of and facilitate optimization of ensuing C-dot biolabeling reactions...
December 1, 2016: Talanta
Gabriel G Arantes de Carvalho, Stalin Kondaveeti, Denise F S Petri, Alexandre M Fioroto, Luiza G R Albuquerque, Pedro V Oliveira
Analytical methods for the determination of rare earth elements (REE) in natural waters by plasma spectrochemical techniques often require sample preparation procedures for analytes preconcentration as well as for removing matrix constituents, that may interfere on the analytical measurements. In the present work, calcium alginate (CA) beads were used for the first time aiming at Ce, La and Nd preconcentration from groundwater samples for further determination by inductively coupled plasma optical emission spectrometry (ICP OES)...
December 1, 2016: Talanta
Manel Moussa, Valérie Pichon, Clarisse Mariet, Thomas Vercouter, Nathalie Delaunay
Ion imprinted polymers (IIPs) specific to lanthanides were synthesized using neodymium ions (Nd(3+)) as template ions. Nd(3+) ions form binary complex ions with 5,7-dichloroquinoline-8-ol (DCQ) or vinylpyridine (VP), or ternary complex ions with both DCQ and VP in 2-methoxyethanol, before copolymerization in the presence of styrene and divinylbenzene as monomer and cross-linker, respectively. DCQ was expected to be trapped in the synthesized polymers pores. The template ion removal was then optimized. For the first time, the DCQ leakage was determined by HPLC-UV during the template removal and the sedimentation steps before solid-phase extraction (SPE) packing...
December 1, 2016: Talanta
Wei Zhang, M Can Gulersonmez, Thomas Hankemeier, Rawi Ramautar
In metabolomics, a wide range of analytical techniques is used for the global profiling of (endogenous) metabolites in complex samples. In this paper, a protocol is presented for the analysis of anionic and cationic metabolites in biological samples by capillary electrophoresis-mass spectrometry (CE-MS). CE is well-suited for the analysis of highly polar and charged metabolites as compounds are separated on the basis of their charge-to-size ratio. A recently developed sheathless interfacing design, i.e., a porous tip interface, is used for coupling CE to electrospray ionization (ESI) MS...
October 1, 2016: Journal of Visualized Experiments: JoVE
Fei Pan, Jian Zhang, Hao-Long Chen, Yen-Hsun Su, Yen-Hao Su, Weng-Sing Hwang
Thermodynamic calculation has been applied to predict the inclusion formation in molten SS400 steel. When the Cerium addition in liquid iron is 70 ppm and the initial Oxygen and Sulphur are both 110 ppm, the formation of oxides containing Cerium would experience the transformation from Ce2O3 to CeO2 and also the formation of sulfides containing Cerium would experience the transformation from CeS to Ce2S3 and then to Ce3S4. Below 2000 K the most thermodynamic stable matter is CeO2 and the less thermodynamic stable inclusion is CeS...
October 21, 2016: Scientific Reports
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"