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Daniel G Amen, Pavitra Krishnamani, Somayeh Meysami, Andrew Newberg, Cyrus A Raji
BACKGROUND: Depression and cognitive disorders (CDs) are two common co-morbid afflictions that commonly present with overlapping symptoms. OBJECTIVE: To evaluate if perfusion neuroimaging with brain SPECT can distinguish persons with depression from those with CDs or both conditions. METHODS: Inclusion criteria were DSM-IV defined depression or CDs (Alzheimer's disease, vascular dementia, dementia not otherwise specified, and amnestic disorders not otherwise specified) including persons with both (total n = 4,541; 847 CDs, 3,269 depression, 425 with both)...
February 10, 2017: Journal of Alzheimer's Disease: JAD
Youling He, Jiangling He, Haoran Zhang, Yingliang Liu, Bingfu Lei
Owning to the hydrogen-band interactions, blue-light-emitting luminescent carbon dots (CDs) synthesized by one-pot hydrothermal treatment were successfully assembled into Eu(3+) doped mesoporous aluminas (MAs). Interesting, dual-emissive CDs/MAs co-doped materials with higher quantum yield (QY), long-term stability, mesoporous structure, high thermal stability, and large surface areas were obtained. Furthermore, the obtained CDs/MAs co-doped materials possessed tunable color, and excellent temperature sensitivity due to the existing of energy transfer between CDs and Eu(3+) ion...
February 9, 2017: Journal of Colloid and Interface Science
Qin Wang, Shengrui Zhang, Yaogang Zhong, Xiao-Feng Yang, Zheng Li, Hua Li
Selenocysteine (Sec) carries out the majority of the functions of the various Se-containing species in vivo. Thus, it is of great importance to develop sensitive and selective assays to detect Sec. Herein, a carbon-dot-based fluorescent turn-on probe for highly selective detection of selenol in living cells is presented. The highly photoluminescent carbon dots that emit yellow-green fluorescence (Y-G-CDs; λmax = 520 nm in water) were prepared by using m-aminophenol as carbon precursor through a facile solvothermal method...
February 7, 2017: Analytical Chemistry
Amy Sitapati, Hyeoneui Kim, Barbara Berkovich, Rebecca Marmor, Siddharth Singh, Robert El-Kareh, Brian Clay, Lucila Ohno-Machado
Precision Medicine involves the delivery of a targeted, personalized treatment for a given patient. By harnessing the power of electronic health records (EHRs), we are increasingly able to practice precision medicine to improve patient outcomes. In this article, we introduce the scientific community at large to important building blocks for personalized treatment, such as terminology standards that are the foundation of the EHR and allow for exchange of health information across systems. We briefly review different types of clinical decision support (CDS) and present the current state of CDS, which is already improving the care patients receive with genetic profile-based tailored recommendations regarding diagnostic and treatment plans...
February 16, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
Azizeh Abdolmaleki, Fatemeh Ghasemi, Jahan B Ghasemi
Cyclodextrin (CD) is a subset of the macrocyclic structural class, which is an important class of small organic agents that are useful functional excipients. They have wide range application possibilities in different fields of sciences such as material preparation, medicine, analytical chemistry, and separation processes. They are used widely in pharmaceutical formulations and drug delivery for increasing the water solubility of low soluble drugs and drug candidates. Due to the ring structure, they behave differently than smaller molecules and may be capable of hitting new classes of targets...
February 2017: Chemical Biology & Drug Design
Arjun Sharma, Trilochan Gadly, Suman Neogy, Sunil Kumar Ghosh, Manoj Kumbhakar
Despite numerous efforts, there are several fundamental ambiguities regarding the photoluminescence of carbon dots (CDs). Spectral shift measurements display characteristic of both π-π* and n-π* transitions for the main absorption or excitation band at ∼350 nm, contrary to common assignment of exclusive n-π* transition. Additionally, the generally perceived core-state transition at ∼250 nm, involving sp(2)-networked carbogenic domains shielded from external environments, needs to be reassessed because it fails to explain the observed fluorescence quenching and spectral shift...
February 17, 2017: Journal of Physical Chemistry Letters
Abdolraouf Samadi-Maybodi, Ali Tilehkan, Mohammad-Rasool Sadeghi-Maleki
A simple, sensitive and selective chemiluminescence method is proposed for the determination of Acetylcysteine and Diclofenac in pharmaceutical samples. The method is based on the measuring light intensity of NaHCO3-H2O2 @ CdS chemiluminescence system in the absence and presence of Acetylcysteine and Diclofenac. It was found that the intensity of chemiluminescence is increased by addition of acetylcysteine while the light intensity is decreased with increasing diclofenac concentration. The CdS quantum dots nanoparticles were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV-Vis spectrophotometry and Fluorescence spectroscopy...
February 14, 2017: Journal of Fluorescence
Nika Bahari Javan, Hamed Montazeri, Leila Rezaie Shirmard, Nersi Jafary Omid, Ghullam Reza Barbari, Mohsen Amini, Mohammad Hossein Ghahremani, Morteza Rafiee-Tehrani, Farid Abedin Dorkoosh
In the current study, biodegradable PHBV/PLGA blend nanoparticles (NPs) containing Teriparatide were loaded in hyaluronic acid/jeffamine (HA-JEF ED-600) hydrogel to prepare a combination delivery system (CDS) for prolonged delivery of Teriparatide. The principal purpose of the present study was to formulate an effective and prolonged Teriparatide delivery system in order to reduce the frequency of injection and thus enhance patient's compliance. Morphological properties, swelling behaviour, crosslinking efficiency and rheological characterization of HA-JEF ED-600 hydrogel were evaluated...
February 10, 2017: European Journal of Pharmaceutical Sciences
Kasikrit Damkliang, Pichaya Tandayya, Unitsa Sangket, Ekawat Pasomsub
At the present, coding sequence (CDS) has been discovered and larger CDS is being revealed frequently. Approaches and related tools have also been developed and upgraded concurrently, especially for phylogenetic tree analysis. This paper proposes an integrated automatic Taverna workflow for the phylogenetic tree inferring analysis using public access web services at European Bioinformatics Institute (EMBL-EBI) and Swiss Institute of Bioinformatics (SIB), and our own deployed local web services. The workflow input is a set of CDS in the Fasta format...
November 28, 2016: Journal of Integrative Bioinformatics
Hiroki Tanaka, Yoshihisa Inoue, Takeshi Nakano, Tadashi Mori
Circular dichroisms (CDs) of the o,p'-isomers of 1,1,1-trichloro- and 1,1-dichloro-2,2-bis(chlorophenyl)ethanes (DDT and DDD) were investigated experimentally and theoretically. A series of strong Cotton effect peaks in a characteristic negative-negative-positive-negative, or its mirror-imaged, pattern were observed in the CD spectra of these persistent organic pollutants. The theoretical CD spectra at the SAC-CI/B95(d) and RI-CC2/def2-TZVPP levels well reproduced the experimental ones, enabling us to unambiguously assign the absolute configuration of (+)-DDT and (-)-DDD as S...
February 10, 2017: Photochemical & Photobiological Sciences
Eric L Eisenstein, Janese M Willis, Rex Edwards, Kevin J Anstrom, Kensaku Kawamoto, Guilherme Del Fiol, Fred S Johnson, David F Lobach
Medicaid beneficiaries in 6 North Carolina counties were randomly assigned to 1 of 3 clinical decision support (CDS) care transition strategies: (1) usual care (Control), (2) CDS messaging to patients and their medical homes (Reports), or (3) CDS messaging to patients, their medical homes, and their care managers (Reports+). We included 7146 Medicaid patients and evaluated transitions from specialist visit, ER and hospital encounters back to the patient's medical home. Patients enrolled in Medicare and Medicaid were not eligible...
2017: Studies in Health Technology and Informatics
Rafael Frederice, Diego Lencione, Marcelo H Gehlen
The combination of a sensitizer and TiO2 nanoparticles forming a photocatalytic material is a central issue in many fields of applied photochemistry. The charge injection of emissive sensitizers into the conduction band of the semiconductor TiO2 may form a photoactive region that becomes dark, or it has a very low emission signal due to the generation of sensitizer radicals. However, by sequential coupling of a selected photoredox dye, such as resazurin, the dark region may become fluorescent at the interfaces where the charge injection has taken place due to the concomitant formation of fluorescent resorufin by cascade electron transfer...
February 10, 2017: Methods and Applications in Fluorescence
Hadar Zaman, Andrew G Bright, Kevin Adams, David M Goodall, Robert T Forbes
There is a need to understand the nature of aggregation of cyclodextrins (CDs) with guest molecules in increasingly complex formulation systems. To this end an innovative application of Taylor dispersion analysis (TDA) and comparison with dynamic light scattering (DLS) have been carried out to probe the nature of ICT01-2588 (ICT-2588), a novel tumor-targeted vascular disrupting agent, in solvents including a potential buffered formulation containing 10% hydroxypropyl-β-cyclodextrin. The two hydrodynamic sizing techniques give measurement responses are that fundamentally different for aggregated solutions containing the target molecule, and the benefits of using TDA in conjunction with DLS are that systems are characterised through measurement of both mass- and z-average hydrodynamic radii...
February 6, 2017: International Journal of Pharmaceutics
Maite de Blas, Marino Navazo, Lucio Alonso, Gotzon Gangoiti, José Antonio García, Estíbaliz Sáez de Cámara, Verónica Valdenebro, Estíbaliz García-Ruiz, Nicolás García-Borreguero
Odour complaints are frequent nowadays, particularly nearby industrial facilities emitting odorous compounds. Among all compounds susceptible of causing odour annoyance, reduced sulphur compounds (RSC) were studied, due to their unpleasant odour and low odour threshold. RSC ambient air mixing ratios, meteorological conditions and population complaints were analysed in an area of complex topography in order to identify their potential sources. Mixing ratios of three compounds, dimethyl sulphide (DMS), carbon disulphide (CDS) and dimethyl disulphide (DMDS), were continuously monitored using an online gas chromatograph coupled with a mass spectrometer detector (GC-MSD), which was placed in a mobile air quality monitoring unit...
March 2017: Environmental Monitoring and Assessment
Arunima Deya Balan, Hagai Eshet, Jacob H Olshansky, Youjin V Lee, Eran Rabani, A Paul Alivisatos
The effect of lattice fluctuations and electronic excitations on the radiative rate is demonstrated in CdSe/CdS core/shell spherical quantum dots (QDs).Using a combination of time-resolved photoluminescence spectroscopy and atomistic simulations, we show that lattice fluctuations can change the radiative rate over the temperature range from 78 K to 300 K. We posit that the presence of the core/shell interface plays a significant role in dictating this behavior. We show that the other major factor that underpins the change in radiative rate with temperature is the presence of higher energy states corresponding to electron excitation into the shell...
February 10, 2017: Nano Letters
Lei Hou, Susan Hellerstein, Allison Vitonis, Liying Zou, Yan Ruan, Xin Wang, Weiyuan Zhang
BACKGROUND: Cesarean delivery (CD) rates have risen globally with nearly 50% of the non-indicated CDs worldwide in China and Brazil. In China's One Child Policy era (1979-2015) most deliveries were women having their only child. Family size is a major determinant of the safety of medically non-indicated CD or CD on maternal request. The goal of this study is to document CD rates, indications, and analyze the relative safety of non-indicated CD compared to SVD and intrapartum CD. METHODS: Univariate and multivariate logistic regression analyses of the association between mode of delivery and short-term maternal and perinatal outcomes were performed on a cross-section of all deliveries at 39 hospitals in 14 provinces of China in 2011, presented as adjusted odds ratio (aOR), 99% confidence intervals (CI)...
2017: PloS One
Joel Varley, Xiaoqing He, Angus A Rockett, Vincenzo Lordi
The conventional buffer layer in thin-film photovoltaics adopting Cu(In,Ga)Se2 (CIGSe) and Cu2ZnSn(S,Se)4 (CZTSSe) absorber layers is CdS, which is known to exhibit unfavorable absorption characteristics that can inhibit overall performance despite yielding record efficiencies in champion devices. One route to improving the buffer layer is by modifying pure CdS, i.e. alloying with another element such as Zn or O. Here we use first-principles calculations based on hybrid functionals to assess the energetics and stability of alloys spanning the quaternary space formed by Cd, Zn, O, and S (Cd1-xZnxOyS1-y) within a regular solution model...
February 8, 2017: ACS Applied Materials & Interfaces
Cancan Ling, Xiangju Ye, Jinghu Zhang, Jinfeng Zhang, Sujuan Zhang, Sugang Meng, Xianliang Fu, Shifu Chen
Ternary chalcogenide semiconductor, cadmium indium sulfide (CdIn2S4), was prepared by a simple solvothermal method using ethylene glycol as a solvent, as well as indium chloride tetrahydrate (InCl3(.)4H2O), cadmium nitrate tetrahydrate [Cd(NO3)2(.)4H2O], and thiacetamide (TAA) as precursors. The resulted sample was subject to a series of characterizations. It is the first time to use CdIn2S4 sample as a visible light-driven photocatalyst for simultaneous selective redox transformation of organic aromatic compounds...
December 2017: Scientific Reports
Cooper M Farr, Liba Pejchar, Sarah E Reed
Developing effective tools for conservation on private lands is increasingly important for global biodiversity conservation; private lands are located in more productive and biologically diverse areas, and they face accelerated rates of land conversion. One strategy is conservation development (CD) subdivisions, which cluster houses in a small portion of a property and preserve the remaining land as protected open space. Despite widespread use, the characteristics that make CD more or less effective at achieving biodiversity conservation are not well understood...
February 7, 2017: Ecological Applications: a Publication of the Ecological Society of America
Yiqun Zhou, Alexandra Desserre, Shiv Kumar Sharma, Shanghao Li, Marvin Marksberry, Charles Chusuei, Patrica Blackwelder, Roger M Leblanc
A type of highly photoluminescent gel-like carbon dots (G-CDs) was successfully synthesized for the first time, by a rapid one-step solvothermal synthesis approach with citric acid and 1, 2-ethylenediamine (EDA) as the precursors. Their gel-like nature was revealed by the Tyndall and coagulation effect which was elucidated by their negative Zeta potential value. The influence of temperatures on the properties and sizes of these G-CDs was analyzed and the best method for maximum quantum yield (QY) was identified...
February 7, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
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