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https://www.readbyqxmd.com/read/29331898/coadsorption-and-subsequent-redox-conversion-behaviors-of-as-iii-and-cr-vi-on-al-containing-ferrihydrite
#1
Zecong Ding, Fenglian Fu, Dionysios D Dionysiou, Bing Tang
Naturally occurring ferrihydrite often contains various impurities, and Al is one of the most prominent impurities. However, little is known about how these impurities impact the physical and chemical properties of ferrihydrite with respect to metal(loid) adsorption. In this study, a series of Al-containing ferrihydrites were synthesized and exposed to a mixed solution containing As(III) and Cr(VI). The results showed that the two contaminants can be quickly adsorbed onto the surface of Al-containing ferrihydrite under acidic and neutral conditions...
January 11, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29331869/dietary-naringenin-supplementation-attenuates-experimental-autoimmune-encephalomyelitis-by-modulating-autoimmune-inflammatory-responses-in-mice
#2
Junpeng Wang, Ying Qi, Xinli Niu, Hua Tang, Simin Nikbin Meydani, Dayong Wu
Autoimmune disease is highly prevalent in humans. Since conventional therapies have limited efficacy and often come with significant side effects, nutrition may provide an alternative and complementary approach to improving autoimmune disorders. Naringenin, a flavonoid found in citrus fruits, has been shown to have anti-inflammatory and antioxidant properties. Using the experimental autoimmune encephalomyelitis (EAE), a rodent model of human multiple sclerosis, we determined the effect of dietary naringenin (0...
December 11, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331778/synthesis-of-a-novel-narrow-band-gap-iron-ii-iii-oxide-titania-silver-silicate-nanocomposite-as-a-highly-efficient-and-stable-visible-light-driven-photocatalyst
#3
Huiping Chen, Nan Chen, Chuanping Feng, Yu Gao
Ag6Si2O7, a visible light-driven photocatalyst, has attracted considerable attention owing to its enormous environmental remediation potential. In this work, a magnetic iron(II,III) oxide/titania/silver silicate (Fe3O4/TiO2/Ag6Si2O7) nanocomposite was synthesized by anchoring TiO2 and Ag6Si2O7 on the surface of Fe3O4 nanoparticles. The morphology, crystal structure, as well as the spectroscopic, magnetic, and photocurrent properties of the as-prepared Fe3O4/TiO2/Ag6Si2O7 nanocomposite were studied. Methylene blue (MB) was used for evaluating the photocatalytic performance under simulated visible light...
January 6, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29331757/hedging-bets-applying-new-zealand-s-gambling-machine-regime-to-cannabis-legalization
#4
Jonathan P Caulkins
Cannabis legalization is often falsely depicted as a binary choice between status quo prohibition and legalizing production and distribution by (regulated) for-profit industry. There are, however, many more prudent architectures for legalization, such as restricting production and distribution licenses to not-for-profit entities. Wilkins describes how New Zealand applied that concept to gambling machines and proposes a parallel for cannabis legalization. Greater investment in proposing good designs along these lines, including attending to governance structures, would be valuable...
January 11, 2018: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29331497/dietary-antioxidant-micronutrients-alter-mucosal-inflammatory-risk-in-a-murine-model-of-genetic-and-microbial-susceptibility
#5
Joseph F Pierre, Reinhard Hinterleitner, Romain Bouziat, Nathan A Hubert, Vanessa Leone, Jun Miyoshi, Bana Jabri, Eugene B Chang
Inflammatory bowel diseases (IBD) are caused by the convergence of microbial, environmental, and genetic factors. Diet significantly alters these interactions by affecting both the host and microbiome. Using a mucosal inflammatory model that resembles the human condition of ileal pouchitis, we investigated the effects of Control (CONT) or Antioxidant (AOX) diet, containing pharmacologically relevant levels of 4 micronutrients, on disease risk in wild-type and IL-10-/- animals following surgical self-filling (SF) ileal blind loop placement...
December 10, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29328617/sinter-resistant-and-highly-active-sub-5-nm-bimetallic-au-cu-nanoparticle-catalyst-encapsulated-in-silica-for-high-temperature-carbon-monoxide-oxidation
#6
Navid Zanganeh, Vamshi Krishna Guda, Hossein Toghiani, Jason M Keith
A novel gold-copper based silica encapsulated mixed metal oxide (MMO) core-shell catalyst - with sub 5-nm MMO particles - was successfully synthesized via a reverse micelle process. The SiO2 encapsulated MMO catalyst was reduced under hydrogen flow to produce Au-Cu@SiO2 catalyst. XRD and XPS characterization confirmed the presence of Au-Cu nanocomposites in the catalyst while TEM characterization revealed the core-shell structure of the catalyst with the presence of sub 5-nm Au-Cu nanoparticle cores inside SiO2 shells...
January 12, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29327092/mesoporous-nickel-oxide-nio-nanopetals-for-ultrasensitive-glucose-sensing
#7
Suryakant Mishra, Priyanka Yogi, P R Sagdeo, Rajesh Kumar
Glucose sensing properties of mesoporous well-aligned, dense nickel oxide (NiO) nanostructures (NSs) in nanopetals (NPs) shape grown hydrothermally on the FTO-coated glass substrate has been demonstrated. The structural study based investigations of NiO-NPs has been carried out by X-ray diffraction (XRD), electron and atomic force microscopies, energy dispersive X-ray (EDX), and X-ray photospectroscopy (XPS). Brunauer-Emmett-Teller (BET) measurements, employed for surface analysis, suggest NiO's suitability for surface activity based glucose sensing applications...
January 11, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29324269/surfactant-free-synthesis-of-silica-aerogel-microspheres-with-hierarchically-porous-structure
#8
Yulu Zhang, Jin Wang, Xuetong Zhang
In this work, we developed a new method to synthesize silica aerogel microspheres via ambient pressure drying (APD) process without applying any surfactants and mechanical stirring. An ethanol solution of partially hydrolyzed, partially condensed silica (CS) was used as precursor in the synthesis, the water-repellent n-Heptane as solvent, while the water-soluble ammonia gas (NH3) as catalyst. After a fast sol-gel process and APD process, aerogel microspheres were obtained in the form of white powder with packing density ranged from 62 mg/cm3 to 230 mg/cm3 for different samples...
January 3, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29321370/activation-induced-cytidine-deaminase-deficiency-accelerates-autoimmune-diabetes-in-nod-mice
#9
Qiyuan Tan, Ningwen Tai, Yangyang Li, James Pearson, Sean Pennetti, Zhiguang Zhou, F Susan Wong, Li Wen
B cells play an important role in type 1 diabetes (T1D) development. However, the role of B cell activation-induced cytidine deaminase (AID) in diabetes development is not clear. We hypothesized that AID is important in the immunopathogenesis of T1D. To test this hypothesis, we generated AID-deficient (AID-/-) NOD mice. We found that AID-/-NOD mice developed accelerated T1D, with worse insulitis and high levels of anti-insulin autoantibody in the circulation. Interestingly, neither maternal IgG transferred through placenta, nor IgA transferred through milk affected the accelerated diabetes development...
January 11, 2018: JCI Insight
https://www.readbyqxmd.com/read/29319422/effect-of-the-supports-on-catalytic-activity-of-pd-catalysts-for-liquid-phase-hydrodechlorination-hydrogenation-reaction
#10
Lijuan Lan, Ying Liu, Sujing Liu, Xuanxuan Ma, Xiaoqiang Li, Zhicheng Dong, Chuanhai Xia
Carbon nanotubes (CNTs), activated carbon (AC), graphene, and aluminium oxide (Al2O3) supported 5% Pd catalysts were prepared by conventional impregnation method, and catalytic activity was tested in hydrogenation of 4-chlorophenol (4-CP) and nitrobenzene (NB) under ambient conditions (313 K and atmospheric pressure). It was found that catalytic activity was greatly affected by the supports. Moreover, Pd/CNTs catalyst exhibited much higher catalytic activity than the other three supported Pd catalysts. The mechanism of this phenomenon was studied through catalyst characterization (ICP-MS, BET, TEM, and SEM)...
January 10, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29318533/chemical-shift-assignments-of-chu_1110-an-ahsa1-like-protein-from-cytophaga-hutchinsonii
#11
Chunjie Liang, Ting He, Tao Li, Yunhuang Yang, Jiang Zhu, Maili Liu
AHSA1 protein family is one of the four largest families in the Bet v1-like protein superfamily. The functions and structures of proteins in AHSA1 family are still largely unknown. CHU_1110 with 167 amino acids and a molecular weight of 19.2 kDa is a member of the AHSA1 family from Cytophaga hutchinsonii, a soil bacterium known for its ability to digest crystalline cellulose. Here we report the complete 1H, 13C and 15N chemical shift assignments of CHU_1110. The secondary structural elements of CGL2373 are consistent with the canonical AHSA1 structure...
January 9, 2018: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/29318467/theoretical-and-experimental-studies-of-the-controlled-release-of-tetracycline-incorporated-into-bioactive-glasses
#12
Ângela L Andrade, Isabela A Militani, Katia J de Almeida, Jadson C Belchior, Sérgio C Dos Reis, Rosangela M F Costa E Silva, Rosana Z Domingues
Several authors have studied the release profile of drugs incorporated in different devices. However, to the best of our knowledge, although many studies have been done on the release of tetracycline, in these release devices, no study has investigated if the released compound is actually the tetracycline, or, instead, a degraded product. This approach is exploited here. In this work, we analyse the influence of two drying methods on the tetracycline delivery behaviour of synthesised glasses using the sol-gel process...
January 9, 2018: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29318291/magnetically-recyclable-fe3o4-go-nh2-h3pmo12o40-nanocomposite-synthesis-characterization-and-application-in-selective-adsorption-of-cationic-dyes-from-water
#13
Saeed Farhadi, Mohammad Hakimi, Mansoureh Maleki
In this study, the PMo12O403- polyanion was immobilized chemically on amino functionalized magnetic graphene oxide nanosheets. The as-prepared ternary magnetic nanocomposite (Fe3O4/GO-NH2/H3PMo12O40) was characterized by powder X-ray powder diffraction (XRD), fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy, energy dispersive spectroscopy (EDX), field emission scanning electron microscopy (FESEM), BET surface area measurements, magnetic measurements (VSM) and atomic force microscopy (AFM)...
December 2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/29316667/uv-vis-induced-degradation-of-phenol-over-magnetic-photocatalysts-modified-with-pt-pd-cu-and-au-nanoparticles
#14
Izabela Wysocka, Ewa Kowalska, Konrad Trzciński, Marcin Łapiński, Grzegorz Nowaczyk, Anna Zielińska-Jurek
The combination of TiO₂ photocatalyst and magnetic oxide nanoparticles enhances the separation and recoverable properties of nanosized TiO₂ photocatalyst. Metal-modified (Me = Pd, Au, Pt, Cu) TiO₂/SiO₂@Fe₃O₄ nanocomposites were prepared by an ultrasonic-assisted sol-gel method. All prepared samples were characterized by X-ray powder diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), Mott-Schottky analysis and photoluminescence spectroscopy (PL)...
January 7, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29316431/bet-ing-on-dual-jak-bet-inhibition-as-a-therapeutic-strategy-for-myeloproliferative-neoplasms
#15
Qingfei Jiang, Catriona Jamieson
In this issue of Cancer Cell, Kleppe et al. describe a combination strategy designed to inhibit BET bromodomain and JAK/STAT signaling as a method for effectively inhibiting NF-κB and cytokine production in myeloproliferative neoplasms (MPNs). The results provide a strong rationale for clinical evaluation of dual BET/JAK inhibition in MPNs.
January 8, 2018: Cancer Cell
https://www.readbyqxmd.com/read/29315611/isolation-of-a-high-affinity-bet-v-1-specific-igg-derived-scfv-from-a-subject-vaccinated-with-hypoallergenic-bet-v-1-fragments
#16
Elisabeth Gadermaier, Katharina Marth, Christian Lupinek, Raffaela Campana, Gerhard Hofer, Katharina Blatt, Dubravka Smiljkovic, Uwe Roder, Margarete Focke-Tejkl, Susanne Vrtala, Walter Keller, Peter Valent, Rudolf Valenta, Sabine Flicker
BACKGROUND: Recombinant hypoallergenic allergen derivatives have been used in clinical immunotherapy studies and clinical efficacy seems to be related to the induction of blocking IgG antibodies recognizing the wild type allergens. However, so far no treatment-induced IgG antibodies have been characterized. OBJECTIVE: To clone, express and characterize IgG antibodies induced by vaccination with two hypoallergenic recombinant fragments of the major birch pollen allergen, Bet v 1 in a non-allergic subject...
January 9, 2018: Allergy
https://www.readbyqxmd.com/read/29314730/transcription-factors-early-growth-response-gene-egr-2-and-3-control-inflammatory-responses-of-tolerant-t-cells
#17
Becky Omodho, Tizong Miao, Alistair L J Symonds, Randeep Singh, Suling Li, Ping Wang
INTRODUCTION: Impaired proliferation and production of IL2 are the hallmarks of experimental T cell tolerance. However, in most autoimmune diseases, auto-reactive T cells do not display hyper proliferation, but inflammatory phenotypes. METHODS: We have now demonstrated that the transcription factors Egr2 and 3 are important for the control of inflammatory cytokine production by tolerant T cells, but not for tolerance induction. RESULTS: In the absence of Egr2 and 3, T cell tolerance, as measured by impaired proliferation and production of IL2, can still be induced, but tolerant T cells produced high levels of inflammatory cytokines...
January 3, 2018: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29313689/porous-interdigitation-molecular-cage-from-tetraphenylethylene-trimeric-macrocycles-that-showed-highly-selective-adsorption-of-co2-and-tnt-vapor-in-air
#18
Jia-Bin Xiong, Jin-Hua Wang, Bao Li, Chun Zhang, Bien Tan, Yan-Song Zheng
A new [3 + 3] trimeric macrocycle, based on tetraphenylethylene having an aggregation-induced emission effect, could form a interdigitation molecular cage with a big void by host-guest interactions. The cage could accommodate two TNT molecules and detect TNT at the 1.7 fg level per mL of air. Moreover, the cage could give permanent pores that had a BET surface area of 347 m2/g and could adsorb 7.8 wt % CO2 with high CO2/N2 selectivity up to 32 (273 K, 1 bar).
January 9, 2018: Organic Letters
https://www.readbyqxmd.com/read/29312470/combined-inhibition-of-bet-proteins-and-class-i-hdacs-synergistically-induces-apoptosis-in-urothelial-carcinoma-cell-lines
#19
Alexander S Hölscher, Wolfgang A Schulz, Maria Pinkerneil, Günter Niegisch, Michèle J Hoffmann
Background: New efficient therapies for urothelial carcinoma (UC) are urgently required. Small-molecule drugs targeting chromatin regulators are reasonable candidates because these regulators are frequently mutated or deregulated in UC. Indeed, in previous work, Romidepsin, which targets class I histone deacetylases (HDAC), efficiently killed UC cells, but did not elicit canonical apoptosis and affected benign urothelial cells indiscriminately. Combinations of HDAC inhibitors with JQ1, an inhibitor of bromodomain-containing acetylation reader proteins like BRD4, which promote especially the transcription of pro-tumorigenic genes, have shown efficacy in several tumor types...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29311634/variation-in-salinity-tolerance-between-and-within-anadromous-subpopulations-of-pike-esox-1ucius
#20
Johanna Sunde, Carl Tamario, Petter Tibblin, Per Larsson, Anders Forsman
Environmental heterogeneity is a key determinant of genetic and phenotypic diversity. Stable and homogenous environments tends to result in evolution of specialism and local adaptations, while temporally unpredictable environments may maintain a diversity of specialists, promote generalist strategies, or favour diversified bet hedging strategies. We compared salinity tolerance between two anadromous subpopulations of pike (Esox Lucius) that utilize freshwater spawning sites with different salinity regimes. Eggs from each population were artificially fertilized and incubated in a salinity gradient (0, 3, 5, 7, and 9 psu) using a split-brood design...
January 8, 2018: Scientific Reports
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