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https://www.readbyqxmd.com/read/29045933/chemical-transformation-of-silver-nanoparticles-in-aquatic-environments-mechanism-morphology-and-toxicity
#1
REVIEW
Weicheng Zhang, Bangding Xiao, Tao Fang
Silver nanoparticles (Ag NPs) have been inevitably introduced into ecological environment during their extensive applications in daily human life. Thermodynamically, Ag NPs are unstable and transform into other species under various aqueous conditions. Ag NPs and their transformation products pose potential threats to environment and humans. However, the complex environmental conditions and transformations of Ag NPs complicate their human health and environmental risk assessment. To bridge the knowledge gap, four essential environmental transformations, oxidative dissolution, sulfidation, chlorination and photoreduction, of Ag NPs are reviewed herein...
October 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/29045779/hierarchically-porous-graphitic-carbon-with-simultaneously-high-surface-area-and-colossal-pore-volume-engineered-via-ice-templating
#2
Luis Estevez, Venkateshkumar Prabhakaran, Adam L Garcia, Yongsoon Shin, Jinhui Tao, Ashleigh M Schwarz, Jens Darsell, Priyanka Bhattacharya, Vaithiyalingam Shutthanandan, Ji-Guang Zhang
Developing hierarchical porous carbon (HPC) materials with competing textural characteristics such as surface area and pore volume in one material is difficult to accomplish-particularly for an atomically ordered graphitic carbon. Herein we describe a synthesis strategy to engineer tunable HPC materials across micro- meso- and macroporous length scales, allowing the fabrication of a graphitic HPC material (HPC-G) with both very high surface area (>2500 m(2)/g) and pore volume (>11 cm(3)/g), the combination of which has not been attained previously...
October 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/29045761/reversible-cleavage-formation-of-the-cr-cr-quintuple-bond-in-the-highly-regioselective-alkyne-cyclotrimerization
#3
Yi-Chou Tsai, Jen-Shiang Kenny Yu, Yu-Siang Huang, Gou-Tao Huang, Yao-Lun Liu
Here we report the employment of the quintuply bonded dichromium amidinates [Cr{κ2-HC(N-2,6-iPr2C6H3)(N-2,6-R2C6H3)}]2 (R = iPr (1), Me (7)) as catalysts to mediate the [2+2+2] cyclotrimerization of terminal alkynes giving 1,3,5-trisubstituted benzenes. During the catalysis, the ultrashort Cr-Cr quintuple bond underwent reversible cleavage/formation, corroborated by the characterization of two inverted arene sandwich dichromium complexes (μ-η6:η6-1,3,5-(Me3Si)3C6H3)[Cr{κ2-HC(N-2,6-iPr2C6H3)(N-2,6-R2C6H3)}]2 (R = iPr (5), Me (8))...
October 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29045436/development-and-characterization-of-novel-chimeric-monoclonal-antibodies-for-broad-spectrum-neutralization-of-rabies-virus
#4
Pan Kyeom Kim, Sun Ju Keum, Modupe O V Osinubi, Richard Franka, Ji Young Shin, Sang Tae Park, Man Su Kim, Mi Jung Park, Soo Young Lee, William Carson, Lauren Greenberg, Pengcheng Yu, Xiaoyan Tao, Wang Lihua, Qing Tang, Guodong Liang, Madhusdana Shampur, Charles E Rupprecht, Shin Jae Chang
Current post-exposure prophylaxis for rabies virus infection has several limitations in terms of supply, cost, safety, and efficacy. Attempts to replace human or equine rabies immune globulins (HRIG or ERIG) have been made by several companies and institutes. We developed potent monoclonal antibodies to neutralize a broad spectrum of rabies viruses by screening hybridomas received from the U.S. Centers for Disease Control and Prevention (CDC). Two kinds of chimeric human antibodies (chimeric #7 and #17) were constructed by cloning the variable regions from selected hybridomas and the constant region of a human antibody...
2017: PloS One
https://www.readbyqxmd.com/read/29045415/isolation-identification-and-phenotypic-and-molecular-characterization-of-pathogenic-vibrio-vulnificus-isolated-from-litopenaeus-vannamei
#5
Tao Teng, Liguo Liang, Kai Chen, Bingwen Xi, Jun Xie, Pao Xu
The morphology and the drug sensitivity of the strain GYX2014-1 isolated from the hepatic pancreatic tissue of moribund Litopenaeus vannamei were evaluated by conventional culture characteristics, physical and chemical characteristics, and molecular biology methods. Detection of extracellulase and hemolysin activity shows that the isolated GYX2014-1 has protease, lipase, gelatinase activity, but none of amylase, or lecithinase activity. The 16S rRNA gene (GenBank accession number: KT781675) was analyzed, and a phylogenetic tree analysis showed that the isolated pathogen was most closely related to V...
2017: PloS One
https://www.readbyqxmd.com/read/29045135/structural-basis-of-inhibition-of-er%C3%AE-coactivator-interaction-by-high-affinity-n-terminus-isoaspartic-acid-tethered-helical-peptides
#6
Mingsheng Xie, Hui Zhao, Qisong Liu, Yujia Zhu, Feng Yin, Yu-Jie Liang, Yanhong Jiang, Dong-Yuan Wang, Kuan Hu, Xuan Qin, Zi-Chen Wang, Yujie Wu, Naihan Xu, Xi-Yang Ye, Tao Wang, Zigang Li
Direct inhibition of the protein-protein interaction of ERα and its endogenous coactivators with a cell permeable stabilized peptide may offer a novel, promising strategy for combating ERα positive breast cancers. Here, we report the co-crystal structure of a helical peptide stabilized by a N-terminal unnatural cross-linked aspartic acid (TD) in complex with the ERα ligand binding domain(LBD). We designed a series of peptides and peptide 6 that showed direct and high-affinity binding to ERα with selective anti-proliferative activity in ERα positive breast cancer cells...
October 18, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29045038/knitting-n-doped-hierarchical-porous-polymers-to-stabilize-ultra-small-pd-nanoparticles-for-solvent-free-catalysis
#7
Yan Sun, Tao Wang, Ang Li, Ling Zhang, Qisheng Huo, Zhen-An Qiao
Hierarchical porous polymers with more than one pore size distributions can effectively support noble metal catalysts and circumvent the limitation of the diffusion of the reactants, and thus exhibit both excellent catalytic activity and superior diffusive properties. Herein, we report a simple one-step Friedel-Crafts reaction to knit a series of benzene heterocycle monomers, such as indane, indoline, indole and tetrahydronaphthalene to obtain hierarchical porous polymers with high surface areas and/or abundant N sites...
October 16, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29044989/intercalating-ti2-nb14-o39-anode-materials-for-fast-charging-high-capacity-and-safe-lithium-ion-batteries
#8
Chunfu Lin, Shengjue Deng, David J Kautz, Zhihao Xu, Tao Liu, Jianbao Li, Ning Wang, Feng Lin
Ti-Nb-O binary oxide materials represent a family of promising intercalating anode materials for lithium-ion batteries. In additional to their excellent capacities (388-402 mAh g(-1) ), these materials show excellent safety characteristics, such as an operating potential above the lithium plating voltage and minimal volume change. Herein, this study reports a new member in the Ti-Nb-O family, Ti2 Nb14 O39 , as an advanced anode material. Ti2 Nb14 O39 porous spheres (Ti2 Nb14 O39 -S) exhibit a defective shear ReO3 crystal structure with a large unit cell volume and a large amount of cation vacancies (0...
October 17, 2017: Small
https://www.readbyqxmd.com/read/29044971/drug-nanocrystals-for-cancer-therapy
#9
REVIEW
Xiaoqing Miao, Wuwei Yang, Tao Feng, Jing Lin, Peng Huang
Drug nanocrystals (NCs) with fascinating physicochemical properties have attracted great attention in drug delivery. High drug-loading efficiency, great structural stability, steady dissolution, and long circulation time are a few examples of these properties, which makes drug NCs an excellent formulation for efficient cancer therapy. In the last two decades, there are a lot of hydrophobic or lipophilic drugs, such as paclitaxel (PTX), camptothecin (CPT), thymectacin, busulfan, cyclosporin A, 2-devinyl-2-(1-hexyloxyethyl) pyropheophorbide (HPPH), and so on, which have been formulated into drug NCs for cancer therapy...
October 17, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/29044905/efficacy-and-safety-of-postoperative-pain-relief-by-parecoxib-injection-after-laparoscopic-surgeries-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#10
Jun-Ming Huang, Zheng-Tao Lv, Ya-Nan Zhang, Wen-Xiu Jiang, Han-Ning Li, Ming-Bo Nie
OBJECTIVE: This study aims to evaluate the efficacy and safety of parecoxib injection in pain relief after laparoscopic surgeries. METHODS: Comprehensive literature search based on four online databases (Pubmed, EMBASE, CENTRAL, ISI Web of Science) was applied to retrieve all related randomized controlled trials (RCTs). Two independent reviewers screened each article for eligibility according to the predetermined inclusion criteria. The Cochrane's Tool was applied to evaluate the methodological quality of included studies...
October 17, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/29044785/hysteretic-two-step-spin-crossover-behavior-in-two-two-dimensional-hofmann-type-coordination-polymers
#11
Fu-Ling Liu, Jun Tao
The reaction of ferrous salts and square planar tetracyanometallates [MII(CN)4]2- (M = Pd, Pt) with ligand 4-(1H-pyrazol-3-yl)pyridine (Hppy) resulted in the formation of two two-dimensional (2D) Hofmann-like coordination polymers (CPs) with general formula of {FeII(Hppy)2[MII(CN)4]}·H2O (M = Pd for 1Pd, Pt for 1Pt). The two CPs have been studied by variable-temperature single-crystal X-ray crystallography, differential scanning calorimetry and magnetic measurements, respectively. 1Pd and 1Pt are isostructures, in which the Fe(II) atoms are equatorially coordinated with [MII(CN)4]2- to form 2D undulating layer and axially coordinated with Hppy ligands...
October 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29044662/the-terpene-synthase-gene-family-in-gossypium-hirsutum-harbors-a-linalool-synthase-ghtps12-implicated-in-direct-defense-responses-against-herbivores
#12
Xin-Zheng Huang, Yu-Tao Xiao, Tobias G Köllner, Wei-Xia Jing, Jun-Feng Kou, Jie-Yin Chen, Dan-Feng Liu, Shao-Hua Gu, Jun-Xiang Wu, Yong-Jun Zhang, Yu-Yuan Guo
Herbivore-induced terpenes have been reported to function as ecological signals in plant-insect interactions. Here we showed that insect-induced cotton volatile blends contained 16 terpenoid compounds with a relatively high level of linalool. The high diversity of terpene production is derived from a large terpene synthase (TPS) gene family. The TPS gene family of Gossypium hirsutum and G. raimondii consist of 46 and 41 members, respectively. Twelve TPS genes (GhTPS4-15) could be isolated and protein expression in E...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29044438/high-total-volatile-organic-compounds-pollution-in-a-hospital-dental-department
#13
Ming-Hui Liu, Tao-Hsin Tung, Fen-Fang Chung, Li-Chuan Chuang, Gwo-Hwa Wan
Bioaerosols produced by dental procedures may affect indoor air quality and cause infections in dental healthcare workers. To provide air quality data that can be used to protect dental healthcare workers, this study evaluated the air quality and its influencing factors in the dental department of the Chang Gung Memorial Hospital in Taiwan. The study was a cross-sectional study design. Indoor air quality (IAQ) evaluations were conducted in six locations: pediatric dentistry, craniofacial orthodontic dentistry, periodontal dentistry, and general practice dentistry, instrument washing room, and patient waiting area...
October 18, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29044197/development-of-a-multiplex-probe-combination-based-one-step-real-time-reverse-transcription-pcr-for-na-subtype-typing-of-avian-influenza-virus
#14
Zhihao Sun, Tao Qin, Feifei Meng, Sujuan Chen, Daxin Peng, Xiufan Liu
Nine influenza virus neuraminidase (NA) subtypes have been identified in poultry and wild birds. Few methods are available for rapid and simple NA subtyping. Here we developed a multiplex probe combination-based one-step real-time reverse transcriptase PCR (rRT-PCR) to detect nine avian influenza virus NA subtypes. Nine primer-probe pairs were assigned to three groups based on the different fluorescent dyes of the probes (FAM, HEX, or Texas Red). Each probe detected only one NA subtype, without cross reactivity...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29044143/metabolic-syndrome-in-rats-is-associated-with-erectile-dysfunction-by-impairing-pi3k-akt-enos-activity
#15
Rui Li, Kai Cui, Kang Liu, Hao Li, Yan Zhang, Xiaming Liu, Ruibao Chen, Mingchao Li, Tao Wang, Shaogang Wang, Jihong Liu, Ke Rao
Metabolic syndrome (MetS) is a risk factor for erectile dysfunction (ED), but the underlying mechanisms are unclear. The aims of this study were to determine the underlying mechanisms of metabolic syndrome-related ED (MED). Sprague Dawley (SD) rats were fed a high-fat diet for 6 months, and metabolic parameters were then assessed. An apomorphine test was conducted to confirm MED. Only rats with MED were administered an intracavernosal injection of either epidermal growth factor (EGF) or vehicle for 4 weeks...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29044142/the-piecewise-parabolic-method-for-riemann-problems-in-nonlinear-elasticity
#16
Wei Zhang, Tao Wang, Jing-Song Bai, Ping Li, Zhen-Hua Wan, De-Jun Sun
We present the application of Harten-Lax-van Leer (HLL)-type solvers on Riemann problems in nonlinear elasticity which undergoes high-load conditions. In particular, the HLLD ("D" denotes Discontinuities) Riemann solver is proved to have better robustness and efficiency for resolving complex nonlinear wave structures compared with the HLL and HLLC ("C" denotes Contact) solvers, especially in the shock-tube problem including more than five waves. Also, Godunov finite volume scheme is extended to higher order of accuracy by means of piecewise parabolic method (PPM), which could be used with HLL-type solvers and employed to construct the fluxes...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29043534/male-produced-aggregation-pheromone-of-coffee-bean-weevil-araecerus-fasciculatus
#17
Shuai Yang, Xiao-Fang Zhang, Yu-Lin Gao, Dan Chen, Dong-Mei She, Tao Zhang, Jun Ning
The coffee bean weevil (CBW), Araecerus fasciculatus (De Geer, 1775), is a cosmopolitan stored-product pest, especially in tropical and subtropical areas. Previous reports showed evidence for aggregation behavior of CBW and this study aimed to identify and evaluate the aggregation pheromone of this pest. Whole-body solvent extractions were analyzed by coupled gas chromatography-mass spectrometry and comparison of male and female extracts showed a male-specific compound which was identified as squalene, 2,6,10,15,19,23-hexamethyl-2,6,10,14,18,22-tetracosahexaene...
October 17, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29043526/chemoradiation-therapy-for-unresected-extrahepatic-cholangiocarcinoma-a-propensity-score-matched-analysis
#18
Anna Torgeson, Shane Lloyd, Dustin Boothe, George Cannon, Ignacio Garrido-Laguna, Jonathan Whisenant, Mark Lewis, Robin Kim, Courtney Scaife, Randa Tao
BACKGROUND: Unresected extrahepatic cholangiocarcinoma (uEHCC) remains a deadly disease. Guidelines for uEHCC recommend either chemotherapy alone (CT) or chemoradiotherapy (CRT). This study used the National Cancer Database (NCDB) to compare outcomes for patients treated with CT and those who underwent CRT. METHODS: Patients with initially diagnosed non-metastatic uEHCC from 2004 to 2014 were identified. Using Chi square analysis, patients who underwent CT were compared with those who received CRT...
October 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29043496/erlotinib-plus-bevacizumab-phase-ll-study-in-patients-with-advanced-non-small-cell-lung-cancer-jo25567-updated-safety-results
#19
Terufumi Kato, Takashi Seto, Makoto Nishio, Koichi Goto, Noboru Yamamoto, Isamu Okamoto, Liang Tao, Wei Yu, Tarik Khaznadar, Kosei Tajima, Masahiko Shibata, Akihiro Seki, Nobuyuki Yamamoto
INTRODUCTION: The phase II JO25567 study compared the efficacy and safety of erlotinib plus bevacizumab vs. erlotinib alone as first-line therapy for advanced epidermal growth factor receptor (EGFR) mutation-positive non-small-cell lung cancer (NSCLC). OBJECTIVE: Our objective is to provide updated analyses of safety and the assessment of manageability of specific adverse events. METHODS: Patients with stage IIIB/IV or recurrent, non-squamous, EGFR mutation-positive NSCLC were randomized to receive erlotinib plus bevacizumab or erlotinib...
October 17, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/29043444/combined-treatment-with-alendronate-and-drynaria-rhizome-extracts-effect-on-fracture-healing-in-osteoporotic-rats
#20
Long Chen, Zhou-Shan Tao, Hui Chen, Kailiang Zhou, Dong-Sheng Zhou
The effects of both alendronate (ALN) and Drynaria rhizome extracts (DRE) alone could promote bone healing in osteoporotic fractures but there are no reports about the combined use of ALN and DRE for promotion of bone healing of fractures in osteoporotic settings. This study investigated the effects of ALN plus DRE on fractures in osteopenic rats. Osteopenic rats underwent unilateral transverse osteotomy on the femur fixed by a sterilized Kirschner wire 2 weeks after intragastric administration of retinoic acid (80 mg/kg body weight/day)...
October 17, 2017: Zeitschrift Für Gerontologie und Geriatrie
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