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https://www.readbyqxmd.com/read/28738616/3d-cuo-nanosheet-wrapped-nanofilm-grown-on-cu-foil-for-high-performance-non-enzymatic-glucose-biosensor-electrode
#1
Rui-Mei Yuan, He-Jun Li, Xue-Min Yin, Jin-Hua Lu, Lei-Lei Zhang
3D binder-free CuO nanosheets wrapped nanofilms has been in situ synthesized on Cu substrate by a simple and facile procedure, with an aim of fabricating high-performance glucose sensor. The complex morphology that the nanosheet grown on Cu subtract evolved into nanofilms and eventually converged to nanowires, is benefit for the mass transport and electro-catalysis. Compared the ECSA of the CuO modified electrode to that of the bare Cu electrode, the effective surface area during the electro-catalysis of the CuO/Cu electrode is much larger...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738513/mitigation-of-nonpoint-source-pollution-in-rural-areas-from-control-to-synergies-of-multi-ecosystem-services
#2
Yonghong Wu, Junzhuo Liu, Renfang Shen, Bojie Fu
Nonpoint source (NPS) pollution produced by human activities in rural areas has induced excessive nutrient input into surface waters and the decline of water quality. The essence of NPS pollution is the transport of nutrients between soil and water. Traditional NPS pollution control strategies, however, are mainly based on the solid and liquid phases, with little focus on the bio-phase between water and soil. The pollutants produced from NPS can be regarded as a resource if recycled or reused in an appropriate way in the agricultural ecosystem...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738457/-survey-of-economic-burden-of-hepatitis-b-related-diseases-in-12-areas-in-china
#3
Q S Ma, S Liang, H W Xiao, S X Zhang, G H Zhuang, Y H Zou, H Z Tan, J C Liu, Y H Zhang, A Q Xu, L Zhang, X X Feng, D S Hu, F Z Wang, F Q Cui, X F Liang
Objective: Less surveys on the economic burden of hepatitis B (HB)-related diseases have been conducted in China, so the socioeconomic harm caused by the diseases is not clear and the key parameters for economic evaluation of hepatitis B prevention and treatment are lacking. This study aimed to analyze the direct, indirect and intangible expenditures of hospitalized patients with HB-related diseases during hospitalization and during a year in different areas of China. Methods: The hospitals for infectious diseases and the large general hospitals in 12 areas in China were selected in the study...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28738449/pbpk-modeling-of-the-effect-of-reduced-kidney-function-on-the-pharmacokinetics-of-drugs-excreted-renally-by-organic-anion-transporters
#4
C-H Hsueh, V Hsu, P Zhao, L Zhang, K M Giacomini, S-M Huang
Altered pharmacokinetics (PK) in subjects with chronic kidney disease (CKD) may lead to dosing adjustment of certain drugs in subjects with CKD. It can be valuable to quantitatively predict PK in CKD for the management of drug dosing in these subjects. We developed physiologically based pharmacokinetic (PBPK) models of seven renally eliminated drugs: adefovir, avibactam, entecavir, famotidine, ganciclovir, oseltamivir carboxylate, and sitagliptin. These drugs are all substrates of renal organic anion transporters (OATs)...
July 24, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28738416/conditionally-immortal-slc4a11-mouse-corneal-endothelial-cell-line-recapitulates-disrupted-glutaminolysis-seen-in-slc4a11-mouse-model
#5
Wenlin Zhang, Diego G Ogando, Edward T Kim, Moon-Jung Choi, Hongde Li, Jason M Tenessen, Joseph A Bonanno
Purpose: To establish conditionally immortal mouse corneal endothelial cell lines with genetically matched Slc4a11+/+ and Slc4a11-/- mice as a model for investigating pathology and therapies for SLC4A11 associated congenital hereditary endothelial dystrophy (CHED) and Fuchs' endothelial corneal dystrophy. Methods: We intercrossed H-2Kb-tsA58 mice (Immortomouse) expressing an IFN-γ dependent and temperature-sensitive mutant of the SV40 large T antigen (tsTAg) with Slc4a11+/+ and Slc4a11-/- C57BL/6 mice...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28738415/monocarboxylate-transporters-mediate-fluorescein-uptake-in-corneal-epithelial-cells
#6
Yi-Chen Sun, Hau-Min Liou, Po-Ting Yeh, Wei-Li Chen, Fung-Rong Hu
Purpose: To determine the presence of monocarboxylate transporter (MCT) in human and rabbit corneal epithelium and its role in transcellular fluorescein transportation in the cornea. Methods: The presence of MCTs in human and rabbit corneal epithelium was determined by RT-PCR and immunohistochemistry. Intracellular fluorescein uptake experiment was performed using cultured human corneal epithelial cells (HCECs). The involvement of MCT in fluorescein uptake was determined by addition of MCT inhibitors to HCECs and acute dry eye model on New Zealand albino rabbits by spectrophotometry, corneal impression cytology, and external eye photographs...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28738383/hydralazine-is-a-suitable-mimetic-agent-of-hypoxia-to-study-the-impact-of-hypoxic-stress-on-in-vitro-blood-brain-barrier-model
#7
Morgane Chatard, Clémentine Puech, Nathalie Perek, Frédéric Roche
BACKGROUND/AIMS: Understanding cellular mechanisms induced by hypoxia is fundamental to reduce blood-brain barrier (BBB) disruption. Nevertheless, the investigation of hypoxia on cellular pathways is complex with true hypoxia because HIF-1α has a short lifetime and rapidly reverts back to a normoxic state. To overcome this difficulty, mimetic agents of the hypoxia pathway have been developed, including the gold standard CoCl2. In this study, we proposed to compare CoCl2 and hydralazine in order to determine a suitable mimetic agent of hypoxia for the study on the BBB...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738351/major-depression-as-a-neuroprogressive-prelude-to-dementia-what-is-the-evidence
#8
Brian E Leonard
Epidemiological studies implicate chronic depression as a predisposing factor for dementia in later life. However, the link is incompletely understood and controversial. The aim of this review is to consider some of the biological factors that contribute to neuroprogressive brain dysfunction in late life as a consequence of prolonged, low-grade inflammation in the course of depressive episodes. As chronic inflammation is known to precipitate increased apoptosis of neurons and astrocytes, this could be a contributing factor to brain dysfunction...
2017: Modern Trends in Pharmacopsychiatry
https://www.readbyqxmd.com/read/28738332/neuroprogression-and-immune-activation-in-major-depressive-disorder
#9
Jeffrey H Meyer
Traditionally, the neurobiology of major depressive disorder (MDD) has been largely considered from the perspective of the state of major depressive episodes (MDE) versus being in remission, but the current accumulation of disease markers, largely acquired cross-sectionally, is strongly suggestive of neuroprogressive aspects of MDD. This chapter focuses on the changes in disease markers involved in the reorganization of the nervous system in MDD, including the translocator protein (TSPO; an index of microglial activation), glial fibrillary acidic protein (GFAP; an index of astroglial activation), [11C]harmine (a marker of monoamine oxidase A; MAO-A), and several other indices (metabotropic glutamate receptor 5 [mGluR5], excitatory amino acid transporters, and magnetic resonance imaging spectroscopy measurements) of glutamate dysregulation...
2017: Modern Trends in Pharmacopsychiatry
https://www.readbyqxmd.com/read/28738304/bacteria-contribute-to-pesticide-degradation-in-cryoconite-holes-in-an-alpine-glacier
#10
Claudia Ferrario, Francesca Pittino, Ilario Tagliaferri, Isabella Gandolfi, Giuseppina Bestetti, Roberto Sergio Azzoni, Guglielmina Diolaiuti, Andrea Franzetti, Roberto Ambrosini, Sara Villa
Organic contaminants deposited on glacier snow and ice are subject to partitioning and degradation processes that determine their environmental fate and, consequently, their accumulation in ice bodies. Among these processes, organic compound degradation by supraglacial bacteria has been investigated to a lesser extent than photo- and chemical degradation. We investigated biodegradation of the organophosphorus insecticide chlorpyrifos (CPF), a xenobiotic tracer that accumulates on glaciers after atmospheric medium- and long-range transport, by installing in situ microcosms on an Alpine glacier to simulate cryoconite hole systems...
July 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28738302/abnormal-pinocytosis-and-valence-variable-behaviors-of-cerium-suggested-a-cellular-mechanism-for-plant-yield-reduction-induced-by-environmental-cerium
#11
Lihong Wang, Jingfang He, Qing Yang, Xiaofen Lv, Jigang Li, David D Y Chen, Xiaolan Ding, Xiaohua Huang, Qing Zhou
The environmental safety of cerium (Ce) applications in many fields has been debated for almost a century because the cellular effects of environmental Ce on living organisms remain largely unclear. Here, using new, interdisciplinary methods, we surprisingly found that after Ce(III) treatment, Ce(III) was first recognized and anchored on the plasma membrane in leaf cells. Moreover, some trivalent Ce(III) was oxidized to tetravalent Ce(IV) in this organelle, which activated pinocytosis. Subsequently, more anchoring sites and stronger valence-variable behavior on the plasma membrane caused stronger pinocytosis to transport Ce(III and IV) into the leaf cells...
July 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28738301/effects-of-an-in-situ-diesel-oil-spill-on-oxidative-stress-in-the-clam-anomalocardia-flexuosa
#12
Adriana E Sardi, Paul E Renaud, Gisele C Morais, César C Martins, Paulo da Cunha Lana, Lionel Camus
Intensive exploitation and transport of oil and derivatives are increasing the risk of coastal contamination by either dramatic disasters or diffuse sources. Tools for monitoring diffuse contamination, such as diesel oil that leaks from marine vessels are much needed. We experimentally tested the efficiency of antioxidant biomarkers as indicators of chronic exposure to diesel oil in a mudflat from the subtropical Bay of Paranaguá, in southern Brazil. We examined the effects of three successive diesel oil spills, with two weeks of recovery time between exposures, on the edible clam Anomalocardia flexuosa...
July 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28738293/oxytocin-effects-on-emotional-response-to-others-faces-via-serotonin-system-in-autism-a-pilot-study
#13
Mina Fukai, Tetsu Hirosawa, Mitsuru Kikuchi, Yasuomi Ouchi, Tetsuya Takahashi, Yuko Yoshimura, Yoshiaki Miyagishi, Hirotaka Kosaka, Masamichi Yokokura, Etsuji Yoshikawa, Tomoyasu Bunai, Yoshio Minabe
The oxytocin (OT)-related serotonergic system is thought to play an important role in the etiology and social symptoms of autism spectrum disorder (ASD). However, no evidence exists for the relation between the prosocial effect of chronic OT administration and the brain serotonergic system. Ten male subjects with ASD were administered OT for 8-10 weeks in an open-label, single-arm, non-randomized, uncontrolled manner. Before and during the OT treatment, positron emission tomography was used with the ((11)C)-3-amino-4-(2-[(demethylamino)methyl]phenylthio)benzonitrile((11)C-DASB) radiotracer...
June 28, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28738271/heterogeneous-photocatalysis-of-tris-2-chloroethyl-phosphate-by-uv-tio2-degradation-products-and-impacts-on-bacterial-proteome
#14
Jinshao Ye, Juan Liu, Chongshu Li, Pulin Zhou, Shuang Wu, Huase Ou
The widespread, persistent and toxic organophosphorus esters (OPEs) have become one category of emerging environmental contaminants. Thus, it is in urgent need to develop a cost-effective and safe treatment technology for OPEs control. The current study is a comprehensive attempt to use UV/TiO2 heterogeneous photocatalysis for the degradation of a water dissolved OPEs, tris(2-chloroethyl) phosphate (TCEP). A pseudo-first order degradation reaction with a kobs of 0.3167 min(-1) was observed, while hydroxyl radical may be the dominating reactive oxidative species...
July 18, 2017: Water Research
https://www.readbyqxmd.com/read/28738230/fluorinated-tripodal-receptors-for-potentiometric-chloride-detection-in-biological-fluids
#15
Nadezda Pankratova, Maria Cuartero, Laura A Jowett, Ethan N W Howe, Philip A Gale, Eric Bakker, Gastón A Crespo
Fluorinated tripodal compounds were recently reported to be efficient transmembrane transporters for a series of inorganic anions. In particular, this class of receptors has been shown to be suitable for the effective complexation of chloride, nitrate, bicarbonate and sulfate anions via hydrogen bonding. The potentiometric properties of urea and thiourea-based fluorinated tripodal receptors are explored here for the first time, in light of the need for reliable sensors for chloride monitoring in undiluted biological fluids...
July 8, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28738200/global-distribution-of-dissolved-organic-matter-along-the-aquatic-continuum-across-rivers-lakes-and-oceans
#16
Philippe Massicotte, Eero Asmala, Colin Stedmon, Stiig Markager
Based on an extensive literature survey containing more than 12,000 paired measurements of dissolved organic carbon (DOC) concentrations and absorption of chromophoric dissolved organic matter (CDOM) distributed over four continents and seven oceans, we described the global distribution and transformation of dissolved organic matter (DOM) along the aquatic continuum across rivers and lakes to oceans. A strong log-linear relationship (R(2)=0.92) between DOC concentration and CDOM absorption at 350nm was observed at a global scale, but was found to be ecosystem-dependent at local and regional scales...
July 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738148/biofunctional-polymer-lipid-hybrid-high-density-lipoprotein-mimicking-nanoparticles-loading-anti-mir155-for-combined-antiatherogenic-effects-on-macrophages
#17
Jing Lu, Yi Zhao, Xiaoju Zhou, Jian Hua He, Yun Yang, Cuiping Jiang, Zitong Qi, Wenli Zhang, Jianping Liu
A biofunctional polymer-lipid hybrid high density lipoprotein-mimicking nanoparticle (HNP) loading anti-miR155 was constructed for combined antiatherogenic effects on macrophages. The HNP consisted of an anti-miR155 core condensed by acid-labile polyethylenimine (acid-labile PEI) polymers and a lipid bilayer coat that was decorated with apolipoprotein A-1, termed acid-labile PEI/HNP. The acid-labile PEI was synthesized with low molecular weight PEI and glutaraldehyde to reduce the cytotoxicity and facilitate nucleic acids escaping from acidic endolysosomes...
July 24, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28738143/sustained-high-nutrient-supply-as-an-allelopathic-trigger-between-periphytic-biofilm-and-microcystis-aeruginosa
#18
Yonghong Wu, Jun Tang, Junzhuo Liu, Bruce Graham, Philip G Kerr, Hong Chen
Allelopathy among aquatic organisms, especially microorganisms, has received growing attention in recent years for its role in shaping interactions with bloom-forming algae. Many studies have shown that allelopathy occurs and increases under nutrient limiting conditons. However, to date there is no reported direct evidence to indicate allelopathy occurs under the condition of constant high nutrient supply. Here we report the allelopathic action of periphytic biofilm on bloom-forming cyanobacteria (Microcystis aeruginosa), which was triggered by the stress of high nutrient conditions, and continues while nutrients are sustained at high levels (trophic state index at 159 and 171)...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28738127/early-onset-alzheimer-disease-and-candidate-risk-genes-involved-in-endolysosomal-transport
#19
Brian W Kunkle, Badri N Vardarajan, Adam C Naj, Patrice L Whitehead, Sophie Rolati, Susan Slifer, Regina M Carney, Michael L Cuccaro, Jeffery M Vance, John R Gilbert, Li-San Wang, Lindsay A Farrer, Christiane Reitz, Jonathan L Haines, Gary W Beecham, Eden R Martin, Gerard D Schellenberg, Richard P Mayeux, Margaret A Pericak-Vance
Importance: Mutations in APP, PSEN1, and PSEN2 lead to early-onset Alzheimer disease (EOAD) but account for only approximately 11% of EOAD overall, leaving most of the genetic risk for the most severe form of Alzheimer disease unexplained. This extreme phenotype likely harbors highly penetrant risk variants, making it primed for discovery of novel risk genes and pathways for AD. Objective: To search for rare variants contributing to the risk for EOAD. Design, Setting, and Participants: In this case-control study, whole-exome sequencing (WES) was performed in 51 non-Hispanic white (NHW) patients with EOAD (age at onset <65 years) and 19 Caribbean Hispanic families previously screened as negative for established APP, PSEN1, and PSEN2 causal variants...
July 24, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28738089/a-random-forest-approach-to-predict-the-spatial-distribution-of-sediment-pollution-in-an-estuarine-system
#20
Eric S Walsh, Betty J Kreakie, Mark G Cantwell, Diane Nacci
Modeling the magnitude and distribution of sediment-bound pollutants in estuaries is often limited by incomplete knowledge of the site and inadequate sample density. To address these modeling limitations, a decision-support tool framework was conceived that predicts sediment contamination from the sub-estuary to broader estuary extent. For this study, a Random Forest (RF) model was implemented to predict the distribution of a model contaminant, triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol) (TCS), in Narragansett Bay, Rhode Island, USA...
2017: PloS One
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