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https://www.readbyqxmd.com/read/28107932/mesoporous-nico2o4-decorated-reduced-graphene-oxide-as-a-novel-platform-for-electrochemical-determination-of-rutin
#1
Shiqiang Cui, Li Li, Yaping Ding, Jiangjiang Zhang, Hua Yang, Yingzi Wang
The glassy carbon electrode (GCE) modified with mesoporous NiCo2O4-decorated reduced graphene oxide (NiCo2O4/rGO) was first applied for the electrochemical determination of rutin. The synthesized NiCo2O4 and NiCo2O4/rGO were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) method. The sensor not only showed a satisfactory linear range (0.1-150μM) and detection limit (0...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107481/bet-inhibitors-disrupt-rad21-dependent-conformational-control-of-kshv-latency
#2
Horng-Shen Chen, Alessandra De Leo, Zhuo Wang, Andrew Kerekovic, Robert Hills, Paul M Lieberman
Kaposi's Sarcoma-associated Herpesvirus (KSHV) establishes stable latent infection in B-lymphocytes and pleural effusion lymphomas (PELs). During latency, the viral genome persists as an epigenetically constrained episome with restricted gene expression programs. To identify epigenetic regulators of KSHV latency, we screened a focused small molecule library containing known inhibitors of epigenetic factors. We identified JQ1, a Bromodomain and Extended Terminal (BET) protein inhibitor, as a potent activator of KSHV lytic reactivation from B-cells carrying episomal KSHV...
January 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28106140/gradient-hierarchic-aligned-porosity-sioc-ceramics
#3
Cekdar Vakifahmetoglu, Damla Zeydanli, Murilo Daniel de Mello Innocentini, Fernanda Dos Santos Ribeiro, Paulo Renato Orlandi Lasso, Gian Domenico Soraru
This work describes a simple technique to produce porous ceramics with aligned porosity having very high permeability and specific surface area. SiOC-based compositions were processed from blends of three types of preceramic polymer and a catalyst, followed by curing and pyrolysis. The heating applied from the bottom of molds promoted the nucleation, expansion and rising of gas bubbles, and the creation of a ceramic matrix with axially oriented channels interconnected by small round pores. The samples were analyzed by SEM, tomography, BET, water immersion porosimetry and permeation to gas flow...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103937/the-influence-of-marketing-on-the-sports-betting-attitudes-and-consumption-behaviours-of-young-men-implications-for-harm-reduction-and-prevention-strategies
#4
Emily G Deans, Samantha L Thomas, Jeffrey Derevensky, Mike Daube
BACKGROUND: Gambling can cause significant health and social harms for individuals, their families, and communities. While many studies have explored the individual factors that may lead to and minimise harmful gambling, there is still limited knowledge about the broader range of factors that may contribute to gambling harm. There are significant regulations to prevent the marketing of some forms of gambling but comparatively limited regulations relating to the marketing of newer forms of online gambling such as sports betting...
January 19, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28103888/photoreceptor-protection-via-blockade-of-bet-epigenetic-readers-in-a-murine-model-of-inherited-retinal-degeneration
#5
Lei Zhao, Jun Li, Yingmei Fu, Mengxue Zhang, Bowen Wang, Jonathan Ouellette, Pawan K Shahi, Bikash R Pattnaik, Jyoti J Watters, Wai T Wong, Lian-Wang Guo
BACKGROUND: The bromodomain and extraterminal domain (BET) family proteins (BET2, BET3, and BET4) "read" (bind) histone acetylation marks via two distinct bromodomains (Brom1 and Brom2) facilitating transcriptional activation. These epigenetic "readers" play crucial roles in pathogenic processes such as inflammation. The role of BETs in influencing the degenerative process in the retina is however unknown. METHODS: We employed the rd10 mouse model (Pde6b (rd10) mutation) of retinitis pigmentosa (RP) to examine the involvement of BET proteins in retinal neurodegeneration...
January 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28102914/nano-koosh-balls-of-mesoporous-mno2-improved-supercapacitor-performance-through-superior-ion-transport
#6
Aasheesh Srivastava, Qysar Maqbool, Chanderpratap Singh, Priyajit Jash, Amit Paul
Manganese dioxide nanomaterials with "Koosh-ball" like morphology (MnO2-KBs) as well as worm-like nanotubes (MnO2-NWs) were obtained by employing Tween 20 as the reducing-cum-structure-directing agent, and KMnO4 as a MnO2 precursor. While the MnO2-KBs were interconnected with each other through tubular extensions, MnO2-NWs were largely disconnected. Both MnO2-KBs and MnO2-NWs had large BET surface areas (>200 m2/g), and were thermally robust upto 300 ⁰C. The electrochemical studies revealed that the highest specific capacitance (Csp) obtained for MnO2-KBs was significantly higher (272 F/g) than that of MnO2-NWs (129 F/g)...
January 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28100400/replication-study-bet-bromodomain-inhibition-as-a-therapeutic-strategy-to-target-c-myc
#7
Fraser Aird, Irawati Kandela, Christine Mantis
In 2015, as part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Kandela et al., 2015) that described how we intended to replicate selected experiments from the paper "BET bromodomain inhibition as a therapeutic strategy to target c-Myc" (Delmore et al., 2011). Here we report the results of those experiments. We found that treatment of human multiple myeloma (MM) cells with the small-molecular inhibitor of BET bromodomains, (+)-JQ1, selectively downregulated MYC transcription, which is similar to what was reported in the original study (Figure 3B; Delmore et al...
January 19, 2017: ELife
https://www.readbyqxmd.com/read/28096419/stromal-cues-regulate-the-pancreatic-cancer-epigenome-and-metabolome
#8
Mara H Sherman, Ruth T Yu, Tiffany W Tseng, Cristovao M Sousa, Sihao Liu, Morgan L Truitt, Nanhai He, Ning Ding, Christopher Liddle, Annette R Atkins, Mathias Leblanc, Eric A Collisson, John M Asara, Alec C Kimmelman, Michael Downes, Ronald M Evans
A fibroinflammatory stromal reaction cooperates with oncogenic signaling to influence pancreatic ductal adenocarcinoma (PDAC) initiation, progression, and therapeutic outcome, yet the mechanistic underpinning of this crosstalk remains poorly understood. Here we show that stromal cues elicit an adaptive response in the cancer cell including the rapid mobilization of a transcriptional network implicated in accelerated growth, along with anabolic changes of an altered metabolome. The close overlap of stroma-induced changes in vitro with those previously shown to be regulated by oncogenic Kras in vivo suggests that oncogenic Kras signaling-a hallmark and key driver of PDAC-is contingent on stromal inputs...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096382/mitochondrial-activation-chemicals-synergize-with-surface-receptor-pd-1-blockade-for-t-cell-dependent-antitumor-activity
#9
Kenji Chamoto, Partha S Chowdhury, Alok Kumar, Kazuhiro Sonomura, Fumihiko Matsuda, Sidonia Fagarasan, Tasuku Honjo
Although immunotherapy by PD-1 blockade has dramatically improved the survival rate of cancer patients, further improvement in efficacy is required to reduce the fraction of less sensitive patients. In mouse models of PD-1 blockade therapy, we found that tumor-reactive cytotoxic T lymphocytes (CTLs) in draining lymph nodes (DLNs) carry increased mitochondrial mass and more reactive oxygen species (ROS). We show that ROS generation by ROS precursors or indirectly by mitochondrial uncouplers synergized the tumoricidal activity of PD-1 blockade by expansion of effector/memory CTLs in DLNs and within the tumor...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28094353/surfactant-free-synthesis-of-three-dimensional-nitrogen-doped-hierarchically-porous-carbon-and-its-application-as-an-electrode-modification-material-for-simultaneous-sensing-of-ascorbic-acid-dopamine-and-uric-acid
#10
Anaclet Nsabimana, Jianping Lai, Suping Li, Pan Hui, Zhongyuan Liu, Guobao Xu
Three-dimensional N-doped hierarchically porous carbon (3D NHPC) was synthesized successfully without using any surfactant or etching agent. This simple and effective synthesis method was accomplished by solvothermal synthesis followed by pyrolysis. The physical morphology and chemical composition of 3D NHPC were verified by scanning electron microscopy, nitrogen adsorption-desorption, and X-ray photoelectron spectroscopy. Its structural studies reveal that it exhibits a micro-mesoporous hierarchical structure and contains C, O and N atoms forming different functional groups...
January 17, 2017: Analyst
https://www.readbyqxmd.com/read/28093898/effect-of-heat-treatment-on-the-nitrogen-content-and-its-role-on-the-co2-adsorption-capacity-of-highly-ordered-mesoporous-carbon-nitride
#11
Kripal S Lakhi, Dae-Hwan Park, Stalin Joseph, Siddulu N Talapaneni, Ugo Ravon, Khalid Al-Bahily, Ajayan Vinu
Mesoporous carbon nitrides (MCN) with rod shaped morphology and tunable nitrogen contents have been synthesized via calcination free method using ethanol-washed mesoporous SBA-15 as templates at different carbonization temperatures. Carbon tetrachloride (CTC) and ethylenediamine (EDA) were used as the sources of carbon and nitrogen respectively. The resulting MCN materials were characterized with low and high angle power XRD, N2 adsorption, HR-SEM, HR-TEM, CHN elemental analysis, XPS and. XANES techniques. It is observed that the carbonization temperature plays a critical role in controlling not only the crystallinity but also the nitrogen content and the textural parameters of the samples including specific surface area and specific pore volume...
January 16, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28093524/age-associated-b-cells-express-a-diverse-repertoire-of-vh-and-v%C3%AE%C2%BA-genes-with-somatic-hypermutation
#12
Lisa M Russell Knode, Martin S Naradikian, Arpita Myles, Jean L Scholz, Yi Hao, Danya Liu, Mandy L Ford, John W Tobias, Michael P Cancro, Patricia J Gearhart
The origin and nature of age-associated B cells (ABCs) in mice are poorly understood. In this article, we show that their emergence required MHC class II and CD40/CD40L interactions. Young donor B cells were adoptively transferred into congenic recipients and allowed to remain for 1 mo in the absence of external Ag. B cells expressing the T-bet transcription factor, a marker for ABCs, were generated after multiple cell divisions from C57BL/6 donors but not from MHC class II- or CD40-deficient donors. Furthermore, old CD154 (CD40L)-deficient mice did not accrue ABCs, confirming that they arise primarily through T-dependent interactions...
January 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28092193/the-impact-of-precommitment-on-risk-taking-while-gambling-a-preliminary-study
#13
Damien Brevers, Xavier Noel, Luke Clark, Jekaterina Zyuzin, Joohwan Justin Park, Antoine Bechara
Background and aims Precommitment refers to the ability to prospectively restrict the access to temptations. This study examined whether risk-taking during gambling is decreased when an individual has the opportunity to precommit to his forthcoming bet. Methods Sixty individuals participated in a gambling task that consisted of direct choice (simply chose one monetary option among four available ones, ranging from low-risk to high-risk options) or precommitment trials (before choosing an amount, participants had the opportunity to make a binding choice that made high-risk options unavailable)...
March 2016: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/28090721/an-ultrastable-and-easily-regenerated-hydrogen-bonded-organic-molecular-framework-with-permanent-porosity
#14
Falu Hu, Caiping Liu, Mingyan Wu, Jiandong Pang, Feilong Jiang, Daqiang Yuan, Maochun Hong
A robust hydrogen-bonded organic framework HOF-TCBP (H4 TCBP=3,3',5,5'-tetrakis-(4-carboxyphenyl)-1,1'-biphenyl) has been successfully constructed and structurally characterized. It possesses a permanent 3D porous structure with a 5-fold interpenetrated dia topological network. This activated HOF-TCBP has a high BET surface area of 2066 m(2)  g(-1) and is capable of highly selective adsorption and separation of light hydrocarbons under ambient conditions. It shows excellent thermal stability, as demonstrated by PXRD experiments and N2 adsorption tests...
January 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28088699/procyanidin-b2-gallates-inhibit-ifn-%C3%AE-and-il-17-production-in-t-cells-by-suppressing-t-bet-and-ror%C3%AE-t-expression
#15
Sachi Tanaka, Kanon Furuya, Kana Yamamoto, Kazuki Yamada, Mikihiro Ichikawa, Manato Suda, Hidefumi Makabe
Procyanidins are widely found in plants and have anti-inflammatory activities. Procyanidin B2 (PCB2) inhibits production of proinflammatory cytokines in macrophages. However, there has been no study that has attempted to determine the effects of PCB2 gallates on T cell functions. In the present study, murine splenocytes were isolated and treated with PCB2 or PCB2 gallates in the presence of an anti-CD3 monoclonal antibody (mAb). PCB2 gallates, but not PCB2, inhibited proliferation and T cell activation of splenocytes after stimulation with the anti-CD3 mAb...
January 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28088566/removal-of-salicylic-acid-as-an-emerging-contaminant-by-a-polar-nano-dendritic-adsorbent-from-aqueous-media
#16
M Arshadi, F Mousavinia, M K Abdolmaleki, M J Amiri, A Khalafi-Nezhad
A polar nano-dendritic adsorbent containing amine groups (SAPAMAA) was synthesized onto the nanoparticles of SiO2Al2O3 and its uptake of salicylic acid (SA) from the synthetic and real water was investigated. The synthesized nanomaterials were fully studied by nuclear magnetic resonance spectrum ((1)H NMR and (13)C NMR), Fourier transform infrared spectroscopy (FT-IR), zeta potential (ζ), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) and elemental analysis...
January 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28074364/efficient-photo-catalytic-degradation-of-malachite-green-using-nickel-tungstate-material-as-photo-catalyst
#17
N Helaïli, A Boudjamaa, M Kebir, K Bachari
The present study focused on the evaluation of photo-catalytic and photo-electrochemical properties of the photo-catalyst based on nickel tungstate material prepared by a nitrate method through the degradation of malachite green (MG) dye's. The effect of catalyst loading and dye concentration was examined. Physico-chemical, optical, electrical, electrochemical, and photo-electrochemical properties of the prepared material were analyzed by X-ray diffraction (XRD), fourier transform-infrared spectroscopy (FTIR), BET analysis, optical reflectance diffuse (DR), scanning electron microscopy (SEM/EDX), electrical conductivity, cyclic voltammetry (CV), current intensity, mott-shottky, and nyquist...
January 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28074072/targeting-bet-proteins-improves-the-therapeutic-efficacy-of-bcl-2-inhibition-in-t-cell-acute-lymphoblastic-leukemia
#18
S Peirs, V Frismantas, F Matthijssens, W Van Loocke, T Pieters, N Vandamme, B Lintermans, M P Dobay, G Berx, B Poppe, S Goossens, B C Bornhauser, J-P Bourquin, P Van Vlierberghe
Inhibition of anti-apoptotic BCL-2 has recently emerged as a promising new therapeutic strategy for the treatment of a variety of human cancers, including leukemia. Here, we used T-cell acute lymphoblastic leukemia as a model system to identify novel synergistic drug combinations with the BH3 mimetic venetoclax (ABT-199). In vitro drug screening in primary leukemia specimens that were derived from patients with high risk of relapse or relapse and cell lines revealed synergistic activity between venetoclax and the BET bromodomain inhibitor JQ1...
January 11, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28073847/identification-of-ccr2-and-cd180-as-robust-pharmacodynamic-tumor-and-blood-biomarkers-for-clinical-use-with-brd4-bet-inhibitors
#19
Tammie C Yeh, Greg O'Connor, Philip Petteruti, Austin Dulak, Maureen Hattersley, J Carl Barrett, Huawei Chen
PURPOSE: AZD5153 is a novel BRD4/BET inhibitor with a distinctive bivalent bromodomain binding mode. To support its clinical development, we identified pharmacodynamic (PD) biomarkers for use in clinical trials to establish target engagement. EXPERIMENTAL DESIGN: CCR2 and CD180 mRNAs, initially identified from whole transcriptome profiling, were further evaluated by quantitative PCR in hematologic cell lines, xenografts, and whole blood from rat, healthy volunteers, and patients with cancer...
January 10, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28070926/identification-and-implication-of-an-allergenic-pr-10-protein-from-walnut-in-birch-pollen-associated-walnut-allergy
#20
Andrea Wangorsch, Annette Jamin, Jonas Lidholm, Nora Gräni, Claudia Lang, Barbara Ballmer-Weber, Stefan Vieths, Stephan Scheurer
SCOPE: English walnut (Juglans regia) belongs to the most important allergenic tree nuts. Co-sensitization with birch (Betula verrucosa) pollen has been reported. We aimed to identify a walnut allergen homologous to the major birch pollen allergen Bet v 1. METHODS AND RESULTS: A cDNA encoding a Bet v 1-homologous allergen (Jug r 5) in walnut kernels was cloned by RT-PCR. Jug r 5 was expressed in E.coli, purified by column chromatography and characterized by CD-spectroscopy...
January 9, 2017: Molecular Nutrition & Food Research
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