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Nick Frazier, Allison Payne, Christopher Dillon, Nithya Subrahmanyam, Hamidreza Ghandehari
Combination of polymer therapeutics and hyperthermia has been shown to enhance accumulation in selectively heated tumor tissue. The additional use of heat shock (HS)-targeting towards tumor tissues can further enhance accumulation and retention, and improve therapeutic outcomes. In this work, high intensity focused ultrasound (HIFU) was used to generate hyperthermia in prostate tumor tissue. Upregulation of the cell surface HS receptor glucose regulated protein 78kDa (GRP78) was observed after treatment with HIFU hyperthermia which was then targeted by specific HS-targeting peptides...
November 29, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
Fan Yang, Long-Ji Luo, Lei Zhang, Dan-Dan Wang, Su-Jin Yang, Li Ding, Jian Li, Dan Chen, Rong Ma, Jian-Zhong Wu, Jin-Hai Tang
MicroRNAs (miRNAs) are a class of highly conserved small noncoding RNAs that play pivotal roles at the post-transcriptional level in the biological function of various cancers, including breast cancer. In our study, miR-346 mimic, inhibitor, negative control or si-SRCIN1 were transfected into MCF-7 and MCF-7/Doc cells, respectively. Quantitative real time PCR (qRT-PCR) was used to measure miR-346 and SRCIN1 mRNA expressions and western blot was used to detect the expression of SRCIN1 in protein level. CCK-8 and colony formation were employed to verify cell viability and proliferation...
November 29, 2016: Gene
Daniel Houle, Geneviève Lajoie, Louis Duchesne
Because of global warming, the frequency and severity of droughts are expected to increase, which will have an impact on forest ecosystem health worldwide(1). Although the impact of drought on tree growth and mortality is being increasingly documented(2-4), very little is known about the impact on nutrient cycling in forest ecosystems. Here, based on long-term monitoring data, we report nutrient fluxes in a boreal forest before, during and following a severe drought in July 2012. During and shortly after the drought, we observed high throughfall (rain collected below the canopy) concentrations of nutrient base cations (potassium, calcium and magnesium), chlorine, phosphorus and dissolved organic carbon (DOC), differing by one to two orders of magnitude relative to the long-term normal, and resulting in important canopy losses...
November 28, 2016: Nature Plants
J-B Doc, C Vergez, P Guillemain, J Kergomard
Sound production on a "coaxial saxophone" is investigated experimentally. The coaxial saxophone is a variant of the cylindrical saxophone made up of two tubes mounted in parallel, which can be seen as a low-frequency analogy of a truncated conical resonator with a mouthpiece. Initially developed for the purposes of theoretical analysis, an experimental verification of the analogy between conical and cylindrical saxophones has never been reported. The present paper explains why the volume of the cylindrical saxophone mouthpiece limits the achievement of a good playability...
November 2016: Journal of the Acoustical Society of America
Katsuya Takechi, Shinichi Hori, Keita Yamashiro, Takeo Yuki, Atsushi Hori
Hepatocellular carcinoma(HCC)with severe vascular invasion has a dismal prognosis, and there is no well-established effective therapy. We report an 84-year-old man who benefited from multiple transcatheter arterial chemoembolization (TACE)treatments for advanced HCC with severe vascular invasion. Initial CT revealed a recurrent, poorly differentiated HCC with tumor thrombus in the inferior vena cava(IVC)and right atrium(Vv3). Two cycles of TACE with 5-FU, DOC, MMC, and superabsorbent polymer microspheres(SAP-MS)with BV resulted in considerable reduction of the tumor thrombus...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
A Funes, A Del Arco, I Álvarez-Manzaneda, J de Vicente, I de Vicente
This study used microcosms to evaluate the effects of adding iron (Fe) magnetic microparticles (MPs) on water quality, focusing on P concentrations in the water column and sediment. Two treatments were considered for a constant 85:1 MP:PMobile molar ratio: T-W, applying MPs on the surface water layer; and T-S, applying MPs on the sediment. MP addition reduced P concentrations in lake water and sediment, with both treatments producing a mean reduction of 68±6% in dissolved inorganic P concentration (DIP) over a 70-day oxic period and reductions of 80±8% (T-W) and 80±4% (T-S) over a 5-day anoxic period...
November 25, 2016: Science of the Total Environment
Hanh Thuy Nguyen, Tuan Hiep Tran, Raj Kumar Thapa, Tung Thanh Pham, Jee-Heon Jeong, Yu Seok Youn, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
OBJECTIVES: In this study, we combined chemo- and hyperthermia therapy in a low temperature-sensitive liposome (LTSL) for potential cancer treatment. METHODS: Docetaxel (DOC) and indocyanine green (ICG) as a therapeutic agent and photosensitizer, respectively, were incorporated in a low temperature-sensitive liposome (LTSL/DI). Nanoparticles were evaluated for the physicochemical characterizations, in vitro uptake and cytotoxicity, and furthermore in vivo anticancer activity...
November 28, 2016: Expert Opinion on Drug Delivery
Stephanie E Hampton, Aaron W E Galloway, Stephen M Powers, Ted Ozersky, Kara H Woo, Ryan D Batt, Stephanie G Labou, Catherine M O'Reilly, Sapna Sharma, Noah R Lottig, Emily H Stanley, Rebecca L North, Jason D Stockwell, Rita Adrian, Gesa A Weyhenmeyer, Lauri Arvola, Helen M Baulch, Isabella Bertani, Larry L Bowman, Cayelan C Carey, Jordi Catalan, William Colom-Montero, Leah M Domine, Marisol Felip, Ignacio Granados, Corinna Gries, Hans-Peter Grossart, Juta Haberman, Marina Haldna, Brian Hayden, Scott N Higgins, Jeff C Jolley, Kimmo K Kahilainen, Enn Kaup, Michael J Kehoe, Sally MacIntyre, Anson W Mackay, Heather L Mariash, Robert M McKay, Brigitte Nixdorf, Peeter Nõges, Tiina Nõges, Michelle Palmer, Don C Pierson, David M Post, Matthew J Pruett, Milla Rautio, Jordan S Read, Sarah L Roberts, Jacqueline Rücker, Steven Sadro, Eugene A Silow, Derek E Smith, Robert W Sterner, George E A Swann, Maxim A Timofeyev, Manuel Toro, Michael R Twiss, Richard J Vogt, Susan B Watson, Erika J Whiteford, Marguerite A Xenopoulos
Winter conditions are rapidly changing in temperate ecosystems, particularly for those that experience periods of snow and ice cover. Relatively little is known of winter ecology in these systems, due to a historical research focus on summer 'growing seasons'. We executed the first global quantitative synthesis on under-ice lake ecology, including 36 abiotic and biotic variables from 42 research groups and 101 lakes, examining seasonal differences and connections as well as how seasonal differences vary with geophysical factors...
November 27, 2016: Ecology Letters
Ye Du, Qian-Yuan Wu, Yun Lu, Hong-Ying Hu, Yang Yang, Rui Liu, Feng Liu
Toxic and harmful disinfection byproducts (DBPs) were formed during wastewater chlorination. It was recently suggested that cytotoxicity to mammalian cells reflects risks posed by chlorinated wastewater. Here, ATP assays were performed to evaluate the cytotoxicity to mammalian cells. Chlorination significantly increased cytotoxicity of treated wastewater. Factors affecting cytotoxicity formation during wastewater chlorination were investigated. Quenching with sodium thiosulfate and ascorbic acid decreased the formed cytotoxicity, while ammonium kept the cytotoxicity stable...
November 15, 2016: Journal of Hazardous Materials
Giorgi Dal Pont, Fabíola Xochilt Valdez Domingos, Marisa Fernandes-de-Castilho, Adalberto Luis Val
In this study, we evaluated the capacity of the Biotic Ligand Model (BLM) to predict copper toxicity in white-waters of the Solimões-Amazon River. LC50 tests using the species Otocinclus vittatus (Regan, 1904) were performed with Solimões-Amazon river water (100%) at 20%, 40%, 60%, and 80% dilutions. A sevenfold decrease in both dissolved and total Cu toxicity was observed in the experiment conducted with 100% when compared to 20% white-water, indicating that physicochemical characteristics of white-water attenuate Cu toxicity...
November 26, 2016: Bulletin of Environmental Contamination and Toxicology
Terhi Rasilo, Ryan H S Hutchins, Clara Ruiz-González, Paul A Del Giorgio
Streams are typically supersaturated in carbon dioxide (CO2) and methane (CH4), and are recognized as important components of regional carbon (C) emissions in northern landscapes. Whereas there is consensus that in most of the systems the CO2 emitted by streams represents C fixed in the terrestrial ecosystem, the pathways delivering this C to streams are still not well understood. We assessed the contribution of direct soil CO2 injection versus the oxidation of soil-derived dissolved organic C (DOC) and CH4 in supporting CO2 supersaturation in boreal streams in Québec...
November 22, 2016: Science of the Total Environment
Elena Leinert, Susanne Singer, Wolfgang Janni, Nadia Harbeck, Tobias Weissenbacher, Brigitte Rack, Doris Augustin, Arthur Wischnik, Marion Kiechle, Johannes Ettl, Visnja Fink, Lukas Schwentner, Martin Eichler
BACKGROUND: Elderly breast cancer patients are affected by poorer quality of life (QoL) compared to younger patients. Because QoL has a relevant impact on guideline-adherent treatment, elderly breast cancer patients are often undertreated, especially with regard to adjuvant chemotherapy, and overall survival is decreased. Thus, understanding the impact of chemotherapy on QoL in elderly patients is crucial. This study compared QoL in patients aged < 65 years and 65 to 70 years receiving adjuvant chemotherapy as a secondary outcome in the prospective randomized multicenter ADEBAR trial...
October 19, 2016: Clinical Breast Cancer
Angelica Bianco, Guillaume Voyard, Laurent Deguillaume, Gilles Mailhot, Marcello Brigante
Improving our understanding of cloud chemistry depends on achieving better chemical characterization (90% of the organic carbon [OC] fraction remains uncharacterized) and, consequently, assessing the reactivity of this complex system. In this manuscript, we report for the first time the concentrations of 16 amino acids (AAs) in 25 cloud water samples. The concentrations of individual AAs ranged from a few nM up to ~2.0 μM, and the average contribution of AAs corresponded to 9.1% (4.4 to 21.6%) of the dissolved OC (DOC) concentration...
November 23, 2016: Scientific Reports
Haidong Hu, Cong Jiang, Haijun Ma, Lili Ding, Jinju Geng, Ke Xu, Hui Huang, Hongqiang Ren
Previous research has focused on dissolved organic carbon (DOC) as a surrogate for dissolved organic matter (DOM) in pharmaceutical wastewater. Dissolved organic nitrogen (DON) as a part of DOM has received little attention. This study investigated the removal characteristics of DON and its influence on the N-nitrosodimethylamine formation potential (NDMA FP) and acute toxicity of DOM in a full-scale hydrolysis/acidification + anaerobic/anoxic/aerobic + moving bed biofilm reactor (MBBR) process treating pharmaceutical wastewater...
October 5, 2016: Water Research
Carolina Voigt, Richard E Lamprecht, Maija E Marushchak, Saara E Lind, Alexander Novakovskiy, Mika Aurela, Pertti J Martikainen, Christina Biasi
Rapidly rising temperatures in the Arctic might cause a greater release of greenhouse gases (GHGs) to the atmosphere. To study the effect of warming on GHG dynamics, we deployed open-top chambers in a subarctic tundra site in Northeast European Russia. We determined carbon dioxide (CO2 ), methane (CH4 ), and nitrous oxide (N2 O) fluxes as well as the concentration of those gases, inorganic nitrogen (N) and dissolved organic carbon (DOC) along the soil profile. Studied tundra surfaces ranged from mineral to organic soils and from vegetated to unvegetated areas...
November 14, 2016: Global Change Biology
Sara J Klapstein, Susan E Ziegler, David A Risk, Nelson J O'Driscoll
The present study examined potential effects of seasonal variations in photoreactive dissolved organic matter (DOM) on methylmercury (MeHg) photodemethylation rates in freshwaters. A series of controlled experiments were carried out using natural and photochemically preconditioned DOM in water collected from one lake in June, August, and October. Natural DOM concentrations doubled between June and August (DOC = 10.2-21.2 mg C L(-1) ) and then remained stable into October (DOC = 19.4 mg C L(-1) )...
November 17, 2016: Environmental Toxicology and Chemistry
Mario E Muscarella, Stuart E Jones, Jay T Lennon
The movement of resources between terrestrial and aquatic habitats has strong effects on ecological processes in recipient ecosystems. Allochthonous inputs modify the quality and quantity of the available resource pool in ways that may alter the composition and stability of recipient communities. Inputs of terrestrial dissolved organic carbon (tDOC) into aquatic ecosystems represent a large influx of resources that has the potential to affect local communities, especially microorganisms. To evaluate the effects of terrestrial inputs on aquatic bacterial community composition and stability, we manipulated the supply rate of tDOC to a set of experimental ponds...
August 2016: Ecology
Gábor Márk Tardy, Bálint Lóránt, Máté Lóka
OBJECTIVES: Power production characteristics and substrate concentration dependence of voltage have been investigated together with the determination of kinetic constants in two-chambered mediator-less microbial fuel cells (MFC) for acetate and peptone substrates. RESULTS: At 500 mg DOC l(-1) (dissolved organic carbon), power densities normalized to the anode surface of 112 mW m(-2) with acetate and 114 mW m(-2) with peptone as electron donor were attained by applying cathodes with a Pt catalyst layer...
November 17, 2016: Biotechnology Letters
Jonathan P Ritson, Michael Bell, Richard E Brazier, Emilie Grand-Clement, Nigel J D Graham, Chris Freeman, David Smith, Michael R Templeton, Joanna M Clark
Peatland ecosystem services include drinking water provision, flood mitigation, habitat provision and carbon sequestration. Dissolved organic carbon (DOC) removal is a key treatment process for the supply of potable water downstream from peat-dominated catchments. A transition from peat-forming Sphagnum moss to vascular plants has been observed in peatlands degraded by (a) land management, (b) atmospheric deposition and (c) climate change. Here within we show that the presence of vascular plants with higher annual above-ground biomass production leads to a seasonal addition of labile plant material into the peatland ecosystem as litter recalcitrance is lower...
November 18, 2016: Scientific Reports
Nareman D H Khaleel, Waleed M M Mahmoud, Oliver Olsson, Klaus Kümmerer
Trimipramine (TMP) is an antidepressant drug used for the treatment of a variety of depressive states and other psychiatric disorders. It has been already detected in the aquatic environment. Currently, no further knowledge is available on fate and effects of TMP in the aquatic environment. Therefore, we studied the biodegradability of TMP and of its photolysis transformation products (PTPs) generated by irradiation with polychromatic UV light in aqueous solution. Different conditions including initial drug concentration, pH, and temperature were applied during TMP photolysis...
November 2, 2016: Water Research
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