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https://www.readbyqxmd.com/read/28421223/selectivity-of-quantum-dot-sensitized-zno-nanotube-arrays-for-improved-photocatalytic-activity
#1
Ge Gao, Qiaoyue Xi, Hua Zhou, Yongxia Zhao, Cunqi Wu, Lidan Wang, Pengran Guo, Jingwei Xu
In this work, PbS/ZnO, CdS/ZnO and CdSe/ZnO hierarchical heterostructures have been successfully synthesized by combining water bath and chemical bath deposition (CBD) methods on indium-doped tin oxide (ITO). Scanning electron microscopy (SEM) results show that quantum dots (QDs) certainly form on the pre-grown ZnO nanorod (NR) and nanotube (NT) arrays. The amount of QDs capped on ZnO could be regulated by varying the cycle times. The photocatalytic activity of the QD-sensitized ZnO is investigated by decomposition of methyl orange (MO) under irradiation, which show remarkable enhancement compared to bare ZnO...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28415389/antibacterial-osteogenic-and-angiogenic-activities-of-srtio3-nanotubes-embedded-with-ag2o-nanoparticles
#2
Yi Chen, Ang Gao, Long Bai, Yueyue Wang, Xin Wang, Xiangyu Zhang, Xiaobo Huang, Ruiqiang Hang, Bin Tang, Paul K Chu
Biomedical titanium (Ti) implants with good anti-infective, osteogenic, and angiogenic properties are in great demand. SrTiO3 nanotubes (NTs) are embedded with silver oxide (Ag2O) nanoparticles (NPs) (denoted as NT-Sr-Ag) by a hydrothermal treatment of TiO2 NTs containing Ag2O NPs (denoted as NT-Ag) in a Sr(OH)2 solution. The morphology, composition, microstructure, ion release phenomenon, as well as antibacterial, osteogenic, and angiogenic activities are investigated in details. During the hydrothermal treatment, the amorphous TiO2 in the NTs morphs into cubic SrTiO3 gradually and the ordered nanotubular architecture is preserved...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28410205/variant-2-of-kiaa0101-antagonizing-its-oncogenic-variant-1-might-be-a-potential-therapeutic-strategy-in-hepatocellular-carcinoma
#3
Lijuan Liu, Youyi Liu, Xiaobei Chen, Miao Wang, Yan Zhou, Ping Zhou, Wenxin Li, Fan Zhu
Hepatocellular carcinoma (HCC) is one of the most lethal malignant tumors worldwide and effective therapies, including molecular therapy, remain elusive. Our previous work demonstrates that oncogenic KIAA0101 transcript variant (tv) 1 promotes HCC development and might be a HCC therapeutic target. However, the function of another KIAA0101 variant, KIAA0101 tv2, remains unknown. In this study, we reported that KIAA0101 tv2 was highly expressed in adjacent non-tumorous liver tissues (NTs) compared to HCC tissues...
March 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28409648/assessment-of-simulated-emergency-scenarios-are-trained-observers-necessary
#4
Juliane Noveanu, Felix Amsler, Wolfgang Ummenhofer, Thomas von Wyl, Mathias Zuercher
OBJECTIVES: Simulation-based medical training is associated with superior educational outcomes and improved cost efficiency. Self- and peer-assessment may be a cost-effective and flexible alternative to expert-led assessment. We compared accuracy of self- and peer-assessment of untrained raters using basic evaluation tools to expert assessment using advanced validation tools including validated questionnaires and post hoc video-based analysis. METHODS: Twenty-eight simulated emergency airway management scenarios were observed and video-recorded for further assessment...
April 14, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28409030/effects-of-multicomponent-exercise-on-functional-and-cognitive-parameters-of-hypertensive-patients-a-quasi-experimental-study
#5
Hélio José Coelho Junior, Bruno Rodrigues, Daniele Jardim Feriani, Ivan de Oliveira Gonçalves, Ricardo Yukio Asano, Samuel da Silva Aguiar, Marco Carlos Uchida
Purpose. The present study aimed to investigate the impact of a 6-month multicomponent exercise program (MCEP) on physical function and cognitive parameters of normotensive (NTS) and hypertensive (HTS) older patients and verify if age can influence the adaptations in response to the exercise. Methods. A total of 218 subjects, 101 NTS and 117 HTS, were recruited and underwent functional and cognitive evaluations before and after six months of a MCEP. The program of exercise was performed twice a week, for 26 weeks...
2017: Journal of Aging Research
https://www.readbyqxmd.com/read/28408877/dull-to-social-acceptance-rather-than-sensitivity-to-social-ostracism-in-interpersonal-interaction-for-depression-behavioral-and-electrophysiological-evidence-from-cyberball-tasks
#6
Qing Zhang, Xiaosi Li, Kai Wang, Xiaoqin Zhou, Yi Dong, Lei Zhang, Wen Xie, Jingjing Mu, Hongchen Li, Chunyan Zhu, Fengqiong Yu
Objectives: Impairments in interpersonal relationships in depression present as irritability, pessimism, and withdrawal, and play an important role in the onset and maintenance of the disorder. However, we know little about the neurological causes of this impaired interpersonal function. This study used the event-related brain potential (ERP) version of the Cyberball paradigm to investigate the emotions and neural activities in depressive patients during social inclusion and exclusion simultaneously to explore neuropsychological mechanisms...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28405101/the-feasibility-study-of-a-hybrid-coplanar-arc-technique-versus-hybrid-intensity-modulated-radiotherapy-in-treatment-of-early-stage-left-sided-breast-cancer-with-simultaneous-integrated-boost
#7
Yuan-Gui Chen, An-Chuan Li, Wen-Yao Li, Miao-Yun Huang, Xiao-Bo Li, Ming-Qiu Chen, Mutian Zhang, Ben-Hua Xu
This study demonstrated the feasibility and advantages of a hybrid, volumetric arc therapy technique that used two 90° coplanar arcs and two three-dimensional conformal tangential beams in the simultaneous-integrated boost radiotherapy of left-sided breast cancer after breast-conserving surgery. A total of nine patients with stage I, left-sided breast cancer who underwent breast-conserving surgery were selected for this retrospective study. For each patient, a hybrid arc plan was generated and then compared with two hybrid intensity-modulated radiotherapy plans...
January 2017: Journal of Medical Physics
https://www.readbyqxmd.com/read/28404583/acute-hypoxia-activates-neuroendocrine-but-not-pre-sympathetic-neurons-in-the-paraventricular-nucleus-of-the-hypothalamus-differential-role-of-nitric-oxide
#8
K Max Coldren, De-Pei Li, David D Kline, Eileen M Hasser, Cheryl M Heesch
Hypoxia results in decreased arterial PO2, arterial chemoreflex activation, and compensatory increases in breathing, sympathetic outflow, and neuroendocrine secretions, including increased secretion of vasopressin (AVP), corticotropin releasing hormone (CRH), adrenocorticotropin hormone (ACTH), and corticosterone. In addition to a brainstem pathway including the nucleus tractus solitarius (nTS) and the rostral ventrolateral medulla (RVLM), medullary pathways to the paraventricular nucleus of the hypothalamus (PVN) contribute to chemoreflex responses...
April 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28402290/improved-uv-response-of-zno-nanotubes-by-resonant-coupling-of-anchored-plasmonic-silver-nanoparticles
#9
Pranab Biswas, Seong Rae Cho, Jong-Woo Kim, Sung-Doo Baek, Jae-Min Myoung
In this study, plasmonic silver (Ag) nanoparticles (NPs)-anchored ZnO nanorods (NRs) and nanotubes (NTs)-based UV photodetectors are demonstrated. Here, Ag NPs are synthesized and anchored by using a room-temperature photochemical method by exposing the precursor solution in UV radiation. In order to achieve stronger surface plasmon resonance (SPR) and minimum agglomeration, the photochemical method is optimized with precursor concentration of 5 mmol, UV intensity of 0.4 mW• cm-2, and exposure time of 30 min...
April 12, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28388624/development-of-a-glycoconjugate-vaccine-to-prevent-invasive-salmonella-typhimurium-infections-in-sub-saharan-africa
#10
Scott M Baliban, Mingjun Yang, Girish Ramachandran, Brittany Curtis, Surekha Shridhar, Rachel S Laufer, Jin Y Wang, John Van Druff, Ellen E Higginson, Nicolas Hegerle, Kristen M Varney, James E Galen, Sharon M Tennant, Andrew Lees, Alexander D MacKerell, Myron M Levine, Raphael Simon
Invasive infections associated with non-typhoidal Salmonella (NTS) serovars Enteritidis (SE), Typhimurium (STm) and monophasic variant 1,4,[5],12:i:- are a major health problem in infants and young children in sub-Saharan Africa, and currently, there are no approved human NTS vaccines. NTS O-polysaccharides and flagellin proteins are protective antigens in animal models of invasive NTS infection. Conjugates of SE core and O-polysaccharide (COPS) chemically linked to SE flagellin have enhanced the anti-COPS immune response and protected mice against fatal challenge with a Malian SE blood isolate...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28384162/responses-of-nucleus-tractus-solitarius-nts-early-and-late-neurons-to-blood-pressure-changes-in-anesthetized-f344-rats
#11
Jenya Kolpakova, Liang Li, Jeffrey T Hatcher, He Gu, Xueguo Zhang, Jin Chen, Zixi Jack Cheng
Previously, many different types of NTS barosensitive neurons were identified. However, the time course of NTS barosensitive neuronal activity (NA) in response to arterial pressure (AP) changes, and the relationship of NA-AP changes, have not yet been fully quantified. In this study, we made extracellular recordings of single NTS neurons firing in response to AP elevation induced by occlusion of the descending aorta in anesthetized rats. Our findings were that: 1) Thirty-five neurons (from 46 neurons) increased firing, whereas others neurons either decreased firing upon AP elevation, or were biphasic: first decreased firing upon AP elevation and then increased firing during AP decrease...
2017: PloS One
https://www.readbyqxmd.com/read/28379213/energy-dense-diet-triggers-changes-in-gut-microbiota-reorganization-of-gut%C3%A2-brain-vagal-communication-and-increases-body-fat-accumulation
#12
Alexandra C Vaughn, Erin M Cooper, Patricia M DiLorenzo, Levi J O'Loughlin, Michael E Konkel, James H Peters, Andras Hajnal, Tanusree Sen, Sun Hye Lee, Claire B de La Serre, Krzysztof Czaja
Obesity is associated with consumption of energy-dense diets and development of systemic inflammation. Gut microbiota play a role in energy harvest and inflammation and can influence the change from lean to obese phenotypes. The nucleus of the solitary tract (NTS) is a brain target for gastrointestinal signals modulating satiety and alterations in gut-brain vagal pathway may promote overeating and obesity. Therefore, we tested the hypothesis that high-fat diet‑induced changes in gut microbiota alter vagal gut-brain communication associated with increased body fat accumulation...
2017: Acta Neurobiologiae Experimentalis
https://www.readbyqxmd.com/read/28379185/growth-structure-and-photocatalytic-properties-of-hierarchical-v%C3%A2-o%C3%A2-tio%C3%A2-nanotube-arrays-obtained-from-the-one-step-anodic-oxidation-of-ti-v-alloys
#13
María C Nevárez-Martínez, Paweł Mazierski, Marek P Kobylański, Grażyna Szczepańska, Grzegorz Trykowski, Anna Malankowska, Magda Kozak, Patricio J Espinoza-Montero, Adriana Zaleska-Medynska
V₂O₅-TiO₂ mixed oxide nanotube (NT) layers were successfully prepared via the one-step anodization of Ti-V alloys. The obtained samples were characterized by scanning electron microscopy (SEM), UV-Vis absorption, photoluminescence spectroscopy, energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (DRX), and micro-Raman spectroscopy. The effect of the applied voltage (30-50 V), vanadium content (5-15 wt %) in the alloy, and water content (2-10 vol %) in an ethylene glycol-based electrolyte was studied systematically to determine their influence on the morphology, and for the first-time, on the photocatalytic properties of these nanomaterials...
April 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28376246/non-technical-skills-of-surgeons-and-anaesthetists-in-simulated-operating-theatre-crises
#14
A G Doumouras, M Hamidi, K Lung, C L Tarola, M W Tsao, J W Scott, D S Smink, S Yule
BACKGROUND: Deficiencies in non-technical skills (NTS) have been increasingly implicated in avoidable operating theatre errors. Accordingly, this study sought to characterize the impact of surgeon and anaesthetist non-technical skills on time to crisis resolution in a simulated operating theatre. METHODS: Non-technical skills were assessed during 26 simulated crises (haemorrhage and airway emergency) performed by surgical teams. Teams consisted of surgeons, anaesthetists and nurses...
April 4, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28373203/three-tier-regulation-of-cell-number-plasticity-by-neurotrophins-and-tolls-in-drosophila
#15
Istvan Foldi, Niki Anthoney, Neale Harrison, Monique Gangloff, Brett Verstak, Mohanakarthik Ponnadai Nallasivan, Samaher AlAhmed, Bangfu Zhu, Mark Phizacklea, Maria Losada-Perez, Marta Moreira, Nicholas J Gay, Alicia Hidalgo
Cell number plasticity is coupled to circuitry in the nervous system, adjusting cell mass to functional requirements. In mammals, this is achieved by neurotrophin (NT) ligands, which promote cell survival via their Trk and p75(NTR) receptors and cell death via p75(NTR) and Sortilin. Drosophila NTs (DNTs) bind Toll receptors instead to promote neuronal survival, but whether they can also regulate cell death is unknown. In this study, we show that DNTs and Tolls can switch from promoting cell survival to death in the central nervous system (CNS) via a three-tier mechanism...
April 3, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28368384/glp-1-acts-on-habenular-avoidance-circuits-to-control-nicotine-intake
#16
Luis M Tuesta, Zuxin Chen, Alexander Duncan, Christie D Fowler, Masago Ishikawa, Brian R Lee, Xin-An Liu, Qun Lu, Michael Cameron, Matthew R Hayes, Theodore M Kamenecka, Matthew Pletcher, Paul J Kenny
Tobacco smokers titrate their nicotine intake to avoid its noxious effects, sensitivity to which may influence vulnerability to tobacco dependence, yet mechanisms of nicotine avoidance are poorly understood. Here we show that nicotine activates glucagon-like peptide-1 (GLP-1) neurons in the nucleus tractus solitarius (NTS). The antidiabetic drugs sitagliptin and exenatide, which inhibit GLP-1 breakdown and stimulate GLP-1 receptors, respectively, decreased nicotine intake in mice. Chemogenetic activation of GLP-1 neurons in NTS similarly decreased nicotine intake...
April 3, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28365410/performance-evaluation-of-direct-fluorescent-antibody-focus-diagnostics-simplexa%C3%A2-flu-a-b-rsv-and-multi-parameter-customized-respiratory-taqman%C3%A2-array-card-in-immunocompromised-patients
#17
Deborah Steensels, Marijke Reynders, Patrick Descheemaeker, Martin D Curran, Frédérique Jacobs, Olivier Denis, Marie-Luce Delforge, Isabel Montesinos
BACKGROUND: Molecular assays for diagnosis of Flu A, Flu B, and RSV with short turn-around-time (TAT) are of considerable clinical importance. In addition, rapid and accurate diagnosis of a large panel of viral and atypical pathogens can be crucial in immunocompromised patients. OBJECTIVES: First, to evaluate the performance of the Simplexa™ Direct assay system in comparison with direct fluorescent antibody (DFA) and customized Taqman® Array Card (TAC) testing for RSV, Flu A, and Flu B in immunocompromised patients...
March 30, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28362492/synthesis-of-low-pt-based-quaternary-ptpdrute-nanotubes-with-optimized-incorporation-of-pd-for-enhanced-electrocatalytic-activity
#18
Si-Yue Ma, Hui-Hui Li, Bi-Cheng Hu, Xiang Cheng, Qi-Qi Fu, Shu-Hong Yu
Improving heteroatomic interactions via alloying or forming heterogeneous catalysts is of importance to the enhancement in terms of electrocatalytic activity and stability. In this work, a simple galvanic replacement reaction was utilized to synthesize low Pt-based quaternary nanotubes (NTs). It is easy to obtain PtPdRuTe NTs with different composition and controlled shape using ultrathin Te nanowires (NWs) as sacrificial templates for its high activity. The NT wall thickness and formed NPs on the surface are closely related with the composition, especially Pd content...
April 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28362359/self-organized-tio%C3%A2-mno%C3%A2-nanotube-arrays-for-efficient-photocatalytic-degradation-of-toluene
#19
María C Nevárez-Martínez, Marek P Kobylański, Paweł Mazierski, Jolanta Wółkiewicz, Grzegorz Trykowski, Anna Malankowska, Magda Kozak, Patricio J Espinoza-Montero, Adriana Zaleska-Medynska
Vertically oriented, self-organized TiO₂-MnO₂ nanotube arrays were successfully obtained by one-step anodic oxidation of Ti-Mn alloys in an ethylene glycol-based electrolyte. The as-prepared samples were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), UV-Vis absorption, photoluminescence spectroscopy, X-ray diffraction (XRD), and micro-Raman spectroscopy. The effect of the applied potential (30-50 V), manganese content in the alloy (5-15 wt. %) and water content in the electrolyte (2-10 vol...
March 31, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28359336/effect-of-electroacupuncture-on-the-nts-is-modulated-primarily-by-acupuncture-point-selection-and-stimulation-frequency-in-normal-rats
#20
Jun-Fan Fang, Jun-Ying Du, Xiao-Mei Shao, Jian-Qiao Fang, Zhe Liu
BACKGROUND: The effect of electroacupuncture (EA) is affected by both the acupuncture point selection and the frequency of stimulation. However, little is known regarding acupuncture point and simulation frequency selection. Neuronal activation of the nucleus of the solitary tract (NTS) is one of the important targets of EA for modulating gastrointestinal function. This study investigated the effects of various combinations of EA frequencies and acupuncture points on NTS neurons. METHODS: Rats were randomly divided into normal, 2 Hz EA, 100 Hz EA and the alternate 2/100 Hz EA groups...
March 31, 2017: BMC Complementary and Alternative Medicine
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