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https://www.readbyqxmd.com/read/28107710/in-vivo-assesment-of-the-genotoxic-and-oxidative-stress-effects-of-particulate-matter-on-echinogammarus-veneris
#1
Melissa Marcoccia, Lucilla Ronci, Elvira De Matthaeis, Andrea Setini, Cinzia Perrino, Silvia Canepari
Seven types of atmospheric dusts (road dust, soil dust, brake dust, desert dust, pellet ash and coke and certified material NIST1648a - urban dust) have been tested for their genotoxicity on specimens of Echinogammarus veneris, a small aquatic amphipod. Experiments were carried out in vivo, by exposing the animals for 24 h to water containing 25 mg/L of dust. Each dust has been chemically analyzed for ions, elemental carbon, organic carbon and for the soluble and insoluble fractions of elements. Non-specific damages to DNA have been evaluated by the comet test, while oxidative damages have been estimated by coupling the comet test with formamido pyrimidine DNA glycosylase reaction...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28107634/electrolyte-gradient-based-modulation-of-molecular-transport-through-nanoporous-gold-membranes
#2
Daniel A McCurry, Ryan C Bailey
Nanopores, and nanoporous materials in general, are interesting for applications in chemical and biomolecular transport as pore sizes are on the same scale as the dimension of many (bio)chemical species. Many studies have focused on either single pores or small arrays of cylindrical pores, which are convenient in terms of their amenability towards computational modeling of transport phenomenon. However, the limited overall porosity may inhibit transport flux as well as the eventual implementation of these materials as active separation elements...
January 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28106165/effects-of-sr-ht-gahnite-on-osteogenesis-and-angiogenesis-by-adipose-derived-stem-cells-for-critical-sized-calvarial-defect-repair
#3
Guifang Wang, Seyed-Iman Roohani-Esfahani, Wenjie Zhang, Kaige Lv, Guangzheng Yang, Xun Ding, Derong Zou, Daxiang Cui, Hala Zreiqat, Xinquan Jiang
Tissue engineering strategies to construct vascularized bone grafts are now attracting much attention. Strontium-hardystonite-Gahnite (Sr-HT-Gahnite) is a strong, highly porous, and biocompatible calcium silicate based bio-ceramic that contains strontium and zinc ions. Adipose derived stem cells (ASCs) have been demonstrated to have the ability in promoting osteogenesis and angiogenesis. In this study, the effects of Sr-HT-Gahnite on cell morphology, cell proliferation, and osteogenic differentiation of ASCs were systematically investigated...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097923/co-processing-of-olive-bagasse-with-crude-rapeseed-oil-via-pyrolysis
#4
Suat Uçar, Selhan Karagöz
The co-pyrolysis of olive bagasse with crude rapeseed oil at different blend ratios was investigated at 500ºC in a fixed bed reactor. The effect of olive bagasse to crude rapeseed oil ratio on the product distributions and properties of the pyrolysis products were comparatively investigated. The addition of crude rapeseed oil into olive bagasse in the co-pyrolysis led to formation of upgraded biofuels in terms of liquid yields and properties. While the pyrolysis of olive bagasse produced a liquid yield of 52...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097615/trends-in-injection-risk-behaviors-among-people-who-inject-drugs-and-the-impact-of-harm-reduction-programs-in-ukraine-2007-2013
#5
Iuliia Makarenko, D C Ompad, Y Sazonova, T Saliuk, J DeHovitz, L Gensburg
The study examined trends in injection risk behaviors among people who inject drugs (PWIDs) and assessed the impact of harm reduction programs in Ukraine during 2007-2013. We performed a secondary analysis of the data collected in serial cross-sectional bio-behavioral surveillance surveys administered with PWIDs in Ukraine in 2007, 2008, 2011, and 2013. Using data from 14 Ukrainian cities, we assessed short-term trends in injection risk behaviors with the Cochran-Armitage test for trend and multivariable logistic regression models, adjusted for age, sex, region, marital status, education level, occupation, age at injection drug use initiation, experience of overdose, and self-reported HIV status...
January 17, 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
https://www.readbyqxmd.com/read/28094920/antifouling-thin-film-composite-membranes-by-controlled-architecture-of-zwitterionic-polymer-brush-layer
#6
Caihong Liu, Jongho Lee, Jun Ma, Menachem Elimelech
In this study, we demonstrate a highly antifouling thin-film-composite (TFC) membrane by grafting a zwitterionic polymer brush via atom-transfer radical-polymerization (ATRP), a controlled, environmentally benign chemical process. Initiator molecules for polymerization were immobilized on the membrane surface by bio-inspired catechol chemistry, leading to the grafting of a dense zwitterionic polymer brush layer. Surface characterization revealed that the modified membrane exhibits reduced surface roughness, enhanced hydrophilicity, and lower surface charge...
January 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28093365/vitamin-b3-metal-organic-frameworks-as-potential-delivery-vehicles-for-therapeutic-nitric-oxide
#7
Rosana V Pinto, Fernando Antunes, João Pires, Vanessa Graça, Paula Brandão, Moisés L Pinto
: The synthesis and structural characterization of two isostructural metal (M=Ni, Co) 3D framework structure that integrate vitamin B3 building blocks with NO delivery capabilities and low toxicity is presented. The compounds with a formula [M2(μ2-H2O)(μ-vitamin B3)4]·2H2O contain two crystallographic distinct divalent metal centers connected by a bridging water and carboxylate group from vitamin B3. The porous compounds have the capability of storing and releasing nitric oxide (NO) in a slow and reversible manner, with released amounts of 2...
January 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28091970/comparison-of-two-adsorbent-based-de-bittering-procedures-for-neem-azadirachta-indica-a-juss-tea-effect-on-polyphenols-anti-oxidant-capacity-color-and-volatile-profile
#8
Abhinandya Datta, Ingolf U Grün, Misha T Kwasniewski, Lakdas N Fernando
Bitterness reduction, especially of foods and beverages containing phytonutrients, is one of the biggest challenges in the food industry because bitterness has a deleterious effect on the taste profile of foods and beverages. Neem (Azadirachta indica A. Juss) is a medicinal tree, indigenous to the Indian-subcontinent, whose medicinal properties have led to it being heralded as the tree which is the "panacea for all diseases". However, neem leaf is extremely bitter, in large part due to its limonoid content, making it unpalatable...
January 14, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28088476/a-chimeric-protein-of-abrin-and-abrus-precatorius-agglutinin-that-neutralizes-abrin-mediated-lethality-in-mice
#9
Vinita Tiwari, Shradha Bagaria, Anjali A Karande
Abrin, a type II ribosome inactivating protein from the Abrus precatorius plant, is extremely toxic. It has been shown to be 75 times more potent than its infamous sister toxin, ricin and their potential use in bio-warfare is a cause of major concern. Although several vaccine candidates are under clinical trials for ricin, none are available against abrin. The present study proposes a chimeric protein, comprising of 1-123 amino acids taken from the A chain of abrin and 124-175 amino acids from Abrus precatorius agglutinin A chain, as a vaccine candidate against abrin intoxication...
January 11, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28081358/microbial-diversity-during-fermentation-of-sweet-paste-a-chinese-traditional-seasoning-using-pcr-denaturing-gradient-gel-electrophoresis
#10
Ping Mao, Yuanliang Hu, Tingting Liao, Zhaoting Wang, Shumiao Zhao, Yunxiang Liang, Yongmei Hu
The aim of this study was to elucidate the changes in the microbial community and biochemical properties of a traditional sweet paste during fermentation. PCR-denaturing gradient gel electrophoresis (DGGE) analysis showed that Aspergillus oryzae was the predominant species in the koji and the majority of the fungi isolated belonged to 2 Zygosaccharomyces species in the mash. The bacterial DGGE profiles revealed the presence of Bacillus subtilis during fermentation, and Lactobacillus acidipiscis, Lactobacillus pubuzihii, Lactobacillus sp, Staphylococcus kloosi and several uncultured bacteria were also detected in the mash after 14 days of main fermentation...
January 12, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28077051/facile-preparation-of-antibacterial-highly-elastic-silvered-polyurethane-nanofiber-fabrics-using-silver-carbamate-and-their-dermal-wound-healing-properties
#11
Suk-Min Hong, Jong-Wan Kim, Jonathan C Knowles, Myoung-Seon Gong
In this study, polycarbonate diol/isosorbide-based antibacterial polyurethane nanofiber fabrics containing Ag nanoparticles were prepared by electrospinning process. Bio-based highly elastic polyurethane was prepared from hexamethylene diisocyanate and isosorbide/polycarbonate diol (8/2) by a simple one-shot bulk polymerization. Ag nanoparticles were formed using simple thermal reduction of silver 2-ethylhexylcarbamate at 120℃. The structural and morphological properties of polyurethane/Ag nanofibers were characterized by X-ray diffraction and scanning electron microscopy...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28076756/dissociation-of-survival-proliferation-and-state-control-in-human-hematopoietic-stem-cells
#12
David J H F Knapp, Colin A Hammond, Paul H Miller, Gabrielle M Rabu, Philip A Beer, Marketa Ricicova, Véronique Lecault, Daniel Da Costa, Michael VanInsberghe, Alice M Cheung, Davide Pellacani, James Piret, Carl Hansen, Connie J Eaves
The role of growth factors (GFs) in controlling the biology of human hematopoietic stem cells (HSCs) remains limited by a lack of information concerning the individual and combined effects of GFs directly on the survival, Mitogenesis, and regenerative activity of highly purified human HSCs. We show that the initial input HSC activity of such a purified starting population of human cord blood cells can be fully maintained over a 21-day period in serum-free medium containing five GFs alone. HSC survival was partially supported by any one of these GFs, but none were essential, and different combinations of GFs variably stimulated HSC proliferation...
January 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28076307/evaluation-of-the-greiner-bio-one-serum-separator-bca-fast-clot-tube
#13
Goce Dimeski, Julie Johnston, Paul P Masci, Kong-Nan Zhao, Nigel Brown
BACKGROUND: Current commercial tubes have difficulties in producing "true" serum from all blood samples even within the recommended clotting times. Hence, Becton Dickinson (BD) and now Greiner have produced tubes containing thrombin as the procoagulant to reduce the clotting time and increase the possibility of producing serum from anticoagulated blood samples. METHODS: The Greiner BCA Fast Clot (GBBCAFC) tube was evaluated in a hospital environment using 40 participants, (30 healthy and 10 undergoing renal dialysis) for 32 analytes against the Greiner lithium heparin tube and the BD Rapid Serum Tubes (BD RST) tube measured on Beckman DxC 800 and DxI 800 analyzers...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28075572/effect-of-protein-corona-on-silver-nanoparticle-stabilization-and-ion-release-kinetics-in-artificial-seawater
#14
Maja Levak, Petra Burić, Maja Dutour Sikirić, Darija Domazet Jurašin, Nevenka Mikac, Niko Bačić, Roland Drexel, Florian Meier, Željko Jakšić, Daniel Mark Lyons
In parallel with the growing use of nanoparticle-containing products, their release into the environment over the coming years is expected to increase significantly. With many large population centers located in near-coastal areas, and increasing evidence that various nanoparticles may be toxic to a range of organisms, biota in estuarine and coastal waters may be particularly vulnerable. While size effects may be important in cases, silver nanoparticles have been found to be toxic in large part due to their release of silver ions...
January 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28069508/bio-inspired-virus-imprinted-polymer-for-prevention-of-viral-infections
#15
Ning Li, Yan-Jie Liu, Fei Liu, Mi-Fang Luo, Ying-Chun Wan, Zheng Huang, Qiang Liao, Fang-Sheng Mei, Zhi-Cheng Wang, Ai-Yin Jin, Yun Shi, Bin Lu
: A novel virus-imprinted polymer for prevention of viral infection was prepared by anchoring molecularly imprinted polymer (MIP) on the surface of poly-dopamine (PDA)-coated silica particles. The imprinting reaction was carried out via self-polymerization of dopamine in the presence of a virus template. Plaque forming assay indicated that the MIP exhibited selective anti-viral infection properties for the template virus in complex media containing different interfering substances, and even other types of viruses...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28069007/the-benzopyrone-biochanin-a-as-a-reversible-competitive-and-selective-monoamine-oxidase-b-inhibitor
#16
Najla O Zarmouh, Suresh K Eyunni, Karam F A Soliman
BACKGROUND: Monoamine oxidase-B (MAO-B) inhibitors are widely used in the treatment of Parkinson's disease. They increase vital monoamine neurotransmitters in the brain. However, there is a need for safer natural reversible MAO inhibitors with MAO-B selectivity. Our previous studies showed that Psoralea corylifolia seeds (PCS) extract contains compounds that inhibit monoamine oxidase-B. METHODS: In this study, six of PCS constituents sharing a benzopyrone structure were investigated...
January 10, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28068645/characteristics-of-pah-tar-oil-contaminated-soils-black-particles-resins-and-implications-for-treatment-strategies
#17
Clément Trellu, Anja Miltner, Rosita Gallo, David Huguenot, Eric D van Hullebusch, Giovanni Esposito, Mehmet A Oturan, Matthias Kästner
Tar oil contamination is a major environmental concern due to health impacts of polycyclic aromatic hydrocarbons (PAH) and the difficulty of reaching acceptable remediation end-points. Six tar oil-contaminated soils with different industrial histories were compared to investigate contamination characteristics by black particles. Here we provide a simple method tested on 6 soils to visualize and identify large amounts of black particles (BP) as either solid aggregates of resinified and weathered tar oil or various wood/coke/coal-like materials derived from the contamination history...
December 31, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28067487/investigation-into-pseudo-capacitance-behavior-of-glycoside-containing-hydrogels
#18
Nachiket Raravikar, Andrew Dobos, Eshwaran Narayanan, Taraka Sai Pavan Grandhi, Saurabh Mishra, Kaushal Rege, Michael Goryll
Electrochemical pseudocapacitors are an attractive choice for energy storage applications because they offer higher energy densities than electrostatic or electric double layer capacitors. They also offer higher power densities in shorter durations of time, as compared to batteries. Recent efforts on pseudocapacitors include biocompatible hydrogel electrolytes and transition metal electrodes for implantable energy storage applications. Pseudocapacitive behavior in these devices has been attributed to the redox reactions that occur within the electric double layer, which is formed at the electrode-electrolyte interface...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28063363/tracking-bio-hydrogen-mediated-production-of-commodity-chemicals-from-carbon-dioxide-and-renewable-electricity
#19
Sebastià Puig, Ramon Ganigué, Pau Batlle-Vilanova, M Dolors Balaguer, Lluís Bañeras, Jesús Colprim
This study reveals that reduction of carbon dioxide (CO2) to commodity chemicals can be functionally compartmentalized in bioelectrochemical systems. In the present example, a syntrophic consortium composed by H2-producers (Rhodobacter sp.) in the biofilm is combined with carboxidotrophic Clostridium species, mainly found in the bulk liquid. The performance of these H2-mediated electricity-driven systems could be tracked by the activity of a biological H2 sensory protein identified at cathode potentials between -0...
December 30, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/28056369/conversion-of-undaria-pinnatifida-residue-to-glycolic-acid-with-recyclable-methylamine-in-low-temperature-hydrothermal-liquefaction
#20
Yongxing Chen, Xiulian Ren, Qifeng Wei
The conversion of Undaria pinnatifida residue to glycolic acid was carried out using methylamine as catalyst by hydrothermal method at relatively low temperature. GC-MS and HPLC were used to identify the composition of bio-oil and liquid products which provide the knowledge of the chemical reaction pathways of the hydrothermal liquefaction. The main liquid product was organic acid which contained glycolic acid, lactic acid, formic acid and acetic acid. And the major organic acid was glycolic acid with the highest yield of 46...
December 24, 2016: Bioresource Technology
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