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Yang Liu, Paolo Maccarini, Gregory M Palmer, Wiguins Etienne, Yulin Zhao, Chen-Ting Lee, Xiumei Ma, Brant A Inman, Tuan Vo-Dinh
Metastatic spread is the mechanism in more than 90 percent of cancer deaths and current therapeutic options, such as systemic chemotherapy, are often ineffective. Here we provide a proof of principle for a novel two-pronged modality referred to as Synergistic Immuno Photothermal Nanotherapy (SYMPHONY) having the potential to safely eradicate both primary tumors and distant metastatic foci. Using a combination of immune-checkpoint inhibition and plasmonic gold nanostar (GNS)-mediated photothermal therapy, we were able to achieve complete eradication of primary treated tumors and distant untreated tumors in some mice implanted with the MB49 bladder cancer cells...
August 17, 2017: Scientific Reports
Sagnik Das, Uttam Kumar Ghorai, Rajib Dey, Chandan Kumar Ghosh, Mrinal Pal
The design and development of novel and high quantum efficiency luminescent materials, such as phosphors, having tuneability in properties, have received tremendous interest among scientists. In this paper, we have achieved for the first-time multiple phosphorescence (blue and green) having a life-time of ∼10 μs in nanostructured zinc oxide that was synthesized using an easy and facile sol-gel method. Importantly, the photoluminescence (PL) intensity and the phosphorescence life-time could be tuned by controlling the annealing temperature under a reducing atmosphere...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
Nhung Thi Tuyet Vo, Trang Ngo Diem Phan, Trung Quang Vo
BACKGROUND: In Vietnam, dengue fever is a major health concern, yet comprehensive information on its economic costs is lacking. The present study investigated treatment costs associated with dengue fever from the perspective of health care provision. METHODS: This retrospective study was conducted between January 2013 and December 2015 in Cu Chi General Hospital. The following dengue-related treatment costs were calculated: hospitalisation, diagnosis, specialised services, drug usage and medical supplies...
May 2017: Malaysian Journal of Medical Sciences: MJMS
Hanzhou Li, Serena Jen, Jayanth H Keshavamurthy, Gregory H Bowers, Hoang Anh Vo, Eran Rotem
No abstract text is available yet for this article.
June 2017: Quantitative Imaging in Medicine and Surgery
Long Vo Ngoc, Yuan-Liang Wang, George A Kassavetis, James T Kadonaga
The signals that direct the initiation of transcription ultimately converge at the core promoter, which is the gateway to transcription. Here we provide an overview of the RNA polymerase II core promoter in bilateria (bilaterally symmetric animals). The core promoter is diverse in terms of its composition and function yet is also punctilious, as it acts with strict rules and precision. We additionally describe an expanded view of the core promoter that comprises the classical DNA sequence motifs, sequence-specific DNA-binding transcription factors, chromatin signals, and DNA structure...
July 1, 2017: Genes & Development
Alireza Bagherli, Hilary Bews, Minh Vo, John Ducas, Davinder S Jassal, Amir Ravandi
Inadvertent anastomosis of the left internal mammary artery (LIMA) or a saphenous vein graft (SVG) to the great cardiac vein (GCV) is a rare complication of coronary artery bypass grafting (CABG). We present two cases with a LIMA to GCV and a SVG to GCV anastomosis, respectively, resulting in angina and dyspnea in the postoperative state. As an alternative to repeat CABG, both patients underwent percutaneous coronary intervention with percutaneous coil embolization or implantation of an Amplatzer vascular plug within the bypass graft to GCV conduit...
September 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
Lien T M Do, Thammarat Aree, Pongpun Siripong, Nga T Vo, Tuyet T A Nguyen, Phung K P Nguyen, Santi Tip-Pyang
Five new flavones possessing a fully substituted A-ring with C-6 and C-8 methyl groups, bougainvinones I - M (1-5), along with three known congeners, 2'-hydroxydemethoxymatteucinol (6), 5,7,3',4'-tetrahydroxy-3-methoxy-6,8-dimethylflavone (7) and 5,7,4'-trihydroxy-3-methoxy-6,8-dimethylflavone (8), were isolated from the EtOAc extract of the stem bark of Bougainvillea spectabilis. Their structures were established by means of spectroscopic data (ultraviolet, infrared, high-resolution electrospray ionization mass spectrometry, and one-dimensional and two-dimensional nuclear magnetic resonance) and single-crystal X-ray crystallographic analysis...
August 11, 2017: Planta Medica
Nathalie Percie du Sert, Alessio Alfieri, Stuart M Allan, Hilary Vo Carswell, Graeme A Deuchar, Tracy D Farr, Paul Flecknell, Lindsay Gallagher, Claire L Gibson, Michael J Haley, Malcolm R Macleod, Barry W McColl, Christopher McCabe, Anna Morancho, Lawrence Df Moon, Michael J O'Neill, Isabel Pérez de Puig, Anna Planas, C Ian Ragan, Anna Rosell, Lisa A Roy, Kathryn O Ryder, Alba Simats, Emily S Sena, Brad A Sutherland, Mark D Tricklebank, Rebecca C Trueman, Lucy Whitfield, Raymond Wong, I Mhairi Macrae
Most in vivo models of ischaemic stroke target the middle cerebral artery and a spectrum of stroke severities, from mild to substantial, can be achieved. This review describes opportunities to improve the in vivo modelling of ischaemic stroke and animal welfare. It provides a number of recommendations to minimise the level of severity in the most common rodent models of middle cerebral artery occlusion, while sustaining or improving the scientific outcomes. The recommendations cover basic requirements pre-surgery, selecting the most appropriate anaesthetic and analgesic regimen, as well as intraoperative and post-operative care...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
Albert Liberski, Nadia Ayad, Dorota Wojciechowska, Radoslaw Kot, Duy M P Vo, Dilibaier Aibibu, Gerald Hoffmann, Chokri Cherif, Katharina Grobelny-Mayer, Marek Snycerski, Helmut Goldmann
Weaving is a resourceful technology which offers a large selection of solutions that are readily adaptable for tissue engineering (TE) of artificial heart valves (HV). The different ways that the yarns are interlaced in this technique could be used to produce complex architectures, such as the three-layer architecture of the leaflets. Once the assembly is complete, growth of cells in the scaffold would occur in the orientation of the yarn, enabling the deposition of extra cellular matrixes proteins in an oriented manner...
August 3, 2017: Biotechnology Advances
Vo Hong Thanh
We present in this paper a new exact algorithm for improving performance of exact stochastic simulation algorithm. The algorithm is developed on concepts of the partial-propensity and the rejection-based approaches. It factorizes the propensity bounds of reactions and groups factors by common reactant species for selecting next reaction firings. Our algorithm provides favorable computational advantages for simulating of biochemical reaction networks by reducing the cost for selecting the next reaction firing to scale with the number of chemical species and avoiding expensive propensity updates during the simulation...
August 4, 2017: Mathematical Biosciences
Douglas J Mateas, Geoffrey R Tick, Kenneth C Carroll
Widely used flushing and in-situ destruction based remediation techniques (i.e. pump-and treat, enhanced-solubilization, and chemical oxidation/reduction) for sites contaminated by nonaqueous phase liquid (NAPL) contaminant sources have been shown to be ineffective at complete mass removal and reducing aqueous-phase contaminant of concern (COC) concentrations to levels suitable for site closure. A remediation method was developed to reduce the aqueous solubility and mass-flux of COCs within NAPL through the in-situ creation of a NAPL mixture source-zone...
July 25, 2017: Journal of Contaminant Hydrology
Nguyen T K Vo, Colin B Seymour, Carmel E Mothersill
Radiobiological responses of a highly clonogenic fish cell line, eelB, to low-LET ionizing radiation and effects of dose rates were studied. In acute exposure to 0.1-12 Gy of gamma rays, eelB's cell survival curve displayed a linear-quadratic (LQ) relationship. In the LQ model, α, β, and α/β ratio were 0.0024, 0.037, and 0.065, respectively; for the first time that these values were reported for fish cells. In the multi-target model, n, D o, and D q values were determined to be 4.42, 2.16, and 3.21 Gy, respectively, and were the smallest among fish cell lines being examined to date...
August 5, 2017: Radiation and Environmental Biophysics
Shahid Parvez, Glenn E Rice, Linda K Teuschler, Jane Ellen Simmons, Thomas F Speth, Susan D Richardson, Richard J Miltner, E Sidney Hunter, Jonathan G Pressman, Lillian F Strader, Gary R Klinefelter, Jerome M Goldman, Michael G Narotsky
A method based on regression modeling was developed to discern the contribution of component chemicals to the toxicity of highly complex, environmentally realistic mixtures of disinfection byproducts (DBPs). Chemical disinfection of drinking water forms DBP mixtures. Because of concerns about possible reproductive and developmental toxicity, a whole mixture (WM) of DBPs produced by chlorination of a water concentrate was administered as drinking water to Sprague-Dawley (S-D) rats in a multigenerational study...
August 2017: Journal of Environmental Sciences (China)
Pengyu Dong, Guihua Hou, Chao Liu, Xinjiang Zhang, Hao Tian, Fenghua Xu, Xinguo Xi, Rong Shao
Pristine Ag₃PO₄ microspheres were synthesized by a co-precipitation method, followed by being calcined at different temperatures to obtain a series of calcined Ag₃PO₄ photocatalysts. This work aims to investigate the origin of activity and stability enhancement for Ag₃PO₄ photocatalyst after calcination based on the systematical analyses of the structures, morphologies, chemical states of elements, oxygen defects, optical absorption properties, separation and transfer of photogenerated electron-hole pairs, and active species...
November 29, 2016: Materials
Tiegui Lin, Jian Wang, Gang Liu, Langping Wang, Xiaofeng Wang, Yufen Zhang
To fabricate high-quality polycrystalline VO₂ thin film with a metal-insulator transition (MIT) temperature less than 50 °C, high-power impulse magnetron sputtering with different discharge currents was employed in this study. The as-deposited VO₂ films were characterized by a four-point probe resistivity measurement system, visible-near infrared (IR) transmittance spectra, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. The resistivity results revealed that all the as-deposited films had a high resistance change in the phase transition process, and the MIT temperature decreased with the increased discharge current, where little deterioration in the phase transition properties, such as the resistance and transmittance changes, could be found...
June 9, 2017: Materials
Bertina Fisher, Larisa Patlagan
VO₂ is the prototype material for insulator-metal transition (IMT). Its transition at TIMT = 340 K is fast and consists of a large resistance jump (up to approximately five orders of magnitude), a large change in its optical properties in the visible range, and symmetry change from monoclinic to tetragonal (expansion by 1% along the tetragonal c-axis and 0.5% contraction in the perpendicular direction). It is a candidate for potential applications such as smart windows, fast optoelectronic switches, and field-effect transistors...
May 19, 2017: Materials
Dong Zhang, Hong-Jun Sun, Min-Huan Wang, Li-Hua Miao, Hong-Zhu Liu, Yu-Zhi Zhang, Ji-Ming Bian
Vanadium dioxide (VO₂) thermochromic thin films with various thicknesses were grown on quartz glass substrates by radio frequency (RF)-plasma assisted oxide molecular beam epitaxy (O-MBE). The crystal structure, morphology and chemical stoichiometry were investigated systemically by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses. An excellent reversible metal-to-insulator transition (MIT) characteristics accompanied by an abrupt change in both electrical resistivity and optical infrared (IR) transmittance was observed from the optimized sample...
March 19, 2017: Materials
Yuping Jin, Nuannuan Zhang, Bin Zhang
The oxygen vacancy (VO) is known as the main compensation center in p-type ZnO, which leads to the difficulty of fabricating high-quality p-type ZnO. To reduce the oxygen vacancies, we oxidized Zn₃N₂ films in oxygen plasma and successfully prepared p-type ZnO:N films at temperatures ranging from room temperature to 300 °C. The films were characterized by X-ray diffraction (XRD), non-Rutherford backscattering (non-RBS) spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectrum, and Hall Effect...
February 27, 2017: Materials
Onruthai Srirodpai, Jatuphorn Wootthikanokkhan, Saiwan Nawalertpanya, Kitti Yuwawech, Vissanu Meeyoo
Thermochromic films based on vanadium dioxide (VO₂)/ethylene vinyl acetate copolymer (EVA) composite were developed. The monoclinic VO₂ particles was firstly prepared via hydrothermal and calcination processes. The effects of hydrothermal time and tungsten doping agent on crystal structure and morphology of the calcined metal oxides were reported. After that, 1 wt % of the prepared VO₂ powder was mixed with EVA compound, using two different mixing processes. It was found that mechanical properties of the EVA/VO₂ films prepared by the melt process were superior to those of which prepared by the solution process...
January 11, 2017: Materials
Tam Thuy Lu Vo, Ji-Hyeon Park, Ji Hae Seo, Eun Ji Lee, Hoon Choi, Sung-Jin Bae, Hoang Le, Sunho An, Hye Shin Lee, Hee-Jun Wee, Kyu-Won Kim
Aurora kinase A (AuA) is a prerequisite for centrosome maturation, separation, and mitotic spindle assembly, thus, it is essential for cell cycle regulation. Overexpression of AuA is implicated in poor prognosis of many types of cancer. However, the regulatory mechanisms underlying the functions of AuA are still not fully understood. Here, we report that AuA colocalizes with arrest defective protein 1 (ARD1) acetyltransferase during cell division and cell migration. Additionally, AuA is acetylated by ARD1 at lysine residues at positions 75 and 125...
July 18, 2017: Oncotarget
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