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https://www.readbyqxmd.com/read/27910892/dynamic-microenvironment-induces-phenotypic-plasticity-of-esophageal-cancer-cells-under-flow
#1
Gizem Calibasi Kocal, Sinan Güven, Kira Foygel, Aaron Goldman, Pu Chen, Shiladitya Sengupta, Ramasamy Paulmurugan, Yasemin Baskin, Utkan Demirci
Cancer microenvironment is a remarkably heterogeneous composition of cellular and non-cellular components, regulated by both external and intrinsic physical and chemical stimuli. Physical alterations driven by increased proliferation of neoplastic cells and angiogenesis in the cancer microenvironment result in the exposure of the cancer cells to elevated levels of flow-based shear stress. We developed a dynamic microfluidic cell culture platform utilizing eshopagael cancer cells as model cells to investigate the phenotypic changes of cancer cells upon exposure to fluid shear stress...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910729/identification-of-cytochrome-p450s-involved-in-the-metabolism-of-6-benzyl-1-benzyloxymethyl-5-iodouracil-w-1-using-human-recombinant-enzymes-and-rat-liver-microsomes-in-vitro
#2
Ying-Yuan Lu, Hai-Xu Cheng, Xin Wang, Xiao-Wei Wang, Jun-Yi Liu, Pu Li, Ya-Qing Lou, Jun Li, Chuang Lu, Guo-Liang Zhang
1. The aim of this study was to identify the hepatic metabolic enzymes, which involved in the biotransformation of 6-benzyl-1-benzyloxymethyl-5-iodouracil (W-1), a novel non-nucleoside reverse transcriptase inhibitor (NNRTIs) in rat and human in vitro. 2. The parent drug of W-1 was incubated with RLMs or recombinant CYPs (CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4 and CYP3A5, respectively) in the presence or absence of NADPH regenerating system. The metabolites of W-1 were analyzed with liquid chromatography-ion trap-time of flight-mass spectrometry (LC-IT-TOF-MS)...
December 2, 2016: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/27910514/status-of-neutron-diagnostics-on-the-experimental-advanced-superconducting-tokamak
#3
G Q Zhong, L Q Hu, N Pu, R J Zhou, M Xiao, H R Cao, Y B Zhu, K Li, T S Fan, X Y Peng, T F Du, L J Ge, J Huang, G S Xu, B N Wan
Neutron diagnostics have become a significant means to study energetic particles in high power auxiliary heating plasmas on the Experimental Advanced Superconducting Tokamak (EAST). Several kinds of neutron diagnostic systems have been implemented for time-resolved measurements of D-D neutron flux, fluctuation, emission profile, and spectrum. All detectors have been calibrated in laboratory, and in situ calibration using (252)Cf neutron source in EAST is in preparation. A new technology of digitized pulse signal processing is adopted in a wide dynamic range neutron flux monitor, compact recoil proton spectrometer, and time of flight spectrometer...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910376/measurement-and-simulation-of-the-response-function-of-time-of-flight-enhanced-diagnostics-neutron-spectrometer-for-beam-ion-studies-at-east-tokamak
#4
X Y Peng, Z J Chen, X Zhang, T F Du, Z M Hu, L J Ge, Y M Zhang, J Q Sun, G Gorini, M Nocente, M Tardocchi, L Q Hu, G Q Zhong, N Pu, S Y Lin, B N Wan, X Q Li, G H Zhang, J X Chen, T S Fan
The 2.5 MeV TOFED (Time-Of-Flight Enhanced Diagnostics) neutron spectrometer with a double-ring structure has been installed at Experimental Advanced Superconducting Tokamak (EAST) to perform advanced neutron emission spectroscopy diagnosis of deuterium plasmas. This work describes the response function of the TOFED spectrometer, which is evaluated for the fully assembled instrument in its final layout. Results from Monte Carlo simulations and dedicated experiments with pulsed light sources are presented and used to determine properties of light transport from the scintillator...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909407/the-tlr4-active-morphine-metabolite-morphine-3-glucuronide-does-not-elicit-macrophage-classical-activation-in-vitro
#5
Samira Khabbazi, Nan Xie, Wenjun Pu, Yannick Goumon, Marie-Odile Parat
Macrophages are abundant in the tumor microenvironment where they adopt a pro-tumor phenotype following alternative polarization induced by paracrine factors from cancer and stromal cells. In contrast, classically activated macrophages have tumoricidal activities, such that the polarization of tumor-associated macrophages has become a novel therapeutic target. Toll-like receptor 4 engagement promotes classical activation of macrophages, and recent literature suggests TLR4 agonism to prevent metastasis and promote survival in experimental metastasis models...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27908781/heme-oxygenase-1-metabolite-biliverdin-not-iron-inhibits-porcine-reproductive-and-respiratory-syndrome-virus-replication
#6
Angke Zhang, Hong Duan, Na Li, Lijuan Zhao, Fengxing Pu, Baicheng Huang, Chunyan Wu, Yuchen Nan, Taofeng Du, Yang Mu, Qin Zhao, Yani Sun, Gaiping Zhang, Julian A Hiscox, En-Min Zhou, Shuqi Xiao
Porcinereproductiveandrespiratorysyndromevirus (PRRSV) causes significant economic losses to the pork industry worldwide. Previously, we demonstrated that heme oxygenase-1 (HO-1) interferes with PRRSV replication. To elucidate the mechanisms involved, here we assess whether the HO-1 downstream metabolites biliverdin (BV) and/or iron mediate the HO-1 antiviral effect. We demonstrate a BV concentration-dependent suppression of PRRSV replication and show that virions are not directly inactivated by BV. Additionally, BV or N-acetyl cysteine (NAC) significantly reduced reactive oxygen species (ROS) in PRRSV-infected MARC-145 cells; however, because NAC did not reduce viral load, the BV antiviral effect is independent of decreased ROS levels...
November 28, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27908608/a-hospital-based-survey-of-patients-with-severe-valvular-heart-disease-in-china
#7
Po Hu, Xian-Bao Liu, Jie Liang, Qi-Feng Zhu, Chao-Xia Pu, Meng-Yao Tang, Jian-An Wang
OBJECTIVES: Due to increasing aging, the epidemiology of VHD may have changed in China. This study aimed to provide contemporary information on the prevalence, distribution patterns, and etiology of severe VHD in China. METHODS: This was a retrospective survey at Second Affiliated Hospital of Zhejiang University, which included all consecutive patients between 2010 and 2015. RESULTS: In all, 139,496 patients were enrolled. Among severe valve diseases, MR was the most frequent (n=946, 0...
November 25, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27908499/a-strategy-to-modulate-the-electrophoretic-behavior-in-plastic-microchips-using-sodium-polystyrene-sulfonate
#8
Jinxiu Guo, Yu Chen, Lizhi Zhao, Ping Sun, Hongli Li, Lei Zhou, Xiayan Wang, Qiaosheng Pu
Plastic microchips have been broadly used as disposable microfluidic devices, but the poorly defined surface properties limit their application. Herein, we proved that an anionic polymer could be used as the background electrolyte (BGE) to provide a strong and stable cathodic electroosmotic flow (EOF) and modulate the electrophoretic behavior for efficient separation in relative thicker microchannels (∼75μm id). A cathodic EOF of ∼3.3×10(-4)cm(2)V(-1)s(-1) was maintained using sodium polystyrene sulfonate (PSSNa) with a molecular weight of 5×10(5) as the BGE, which ensured fluorescein isothiocyanate labeled biogenic amines (BAs) appeared ahead of other components in the electropherograms obtained with microchips of cyclic olefin copolymer...
November 23, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27906478/activatable-photoacoustic-nanoprobes-for-in-vivo-ratiometric-imaging-of-peroxynitrite
#9
Jianjian Zhang, Xu Zhen, Paul Kumar Upputuri, Manojit Pramanik, Peng Chen, Kanyi Pu
Organic semiconducting nanoprobes doped with bulky borane can undergo specific activation by ONOO(-) even at tumor-relevant acidic pH (6.8), permitting in vivo ratiometric photoacoustic imaging of ONOO(-) in the tumor environment of living mice.
December 1, 2016: Advanced Materials
https://www.readbyqxmd.com/read/27906351/mitigating-transverse-mode-instability-in-all-fiber-laser-oscillator-and-scaling-power-up-to-2-5-kw-employing-bidirectional-pump-scheme
#10
Baolai Yang, Hanwei Zhang, Chen Shi, Xiaolin Wang, Pu Zhou, Xiaojun Xu, Jinbao Chen, Zejin Liu, Qisheng Lu
Transverse mode instability (TMI) is one of the main limiting factors in kW-level fiber lasers. Unlike fiber amplifiers, TMI in fiber laser oscillators attracts less attention from researchers. In this work, we construct an all-fiber ytterbium-doped laser oscillator and investigate the performance in co-pumping and bidirectional-pumping configurations, respectively. In the co-pumping scheme, TMI occurs at ~1.6kW and restricts further output power scaling. Different from the characteristic of dynamic TMI in fiber amplifiers, quasi-static TMI is observed in the laser oscillator...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906286/modeling-and-experimental-study-of-plasmonic-lens-imaging-with-resolution-enhanced-methods
#11
Zeyu Zhao, Yunfei Luo, Na Yao, Wei Zhang, Changtao Wang, Ping Gao, Chengwei Zhao, Mingbo Pu, Xiangang Luo
Plasmonic lens imaging with some resolution enhancement methods are investigated in this paper, mainly by physical modeling and numerical simulations. The imaging model is based on the refined optical transfer function with extra reflection in imaging space and measured in variant magnetic and electric field components. The influences of structured light illumination and mask patterns<sup>'</sup> modifications are considered as well. As experimental demonstrations, L-shaped slits pattern with a half-pitch of 60 nm is successfully imaged with 50 nm air distance, by using plasmonic cavity lens lithography and off-axis illumination with 365 nm wavelength light...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27904699/generation-of-induced-pluripotent-stem-cells-with-high-efficiency-from-human-embryonic-renal-cortical-cells
#12
Ling Yao, Ruifang Chen, Pu Wang, Qi Zhang, Hailiang Tang, Huaping Sun
Reprogramming of somatic cells into induced pluripotent stem cells (iPSCs) emerges as a prospective therapeutic angle in regenerative medicine and a tool for drug screening. Although increasing numbers of iPSCs from different sources have been generated, there has been limited progress in yield of iPSC. Here, we show that four Yamanaka factors Oct4, Sox2, Klf4 and c-Myc can convert human embryonic renal cortical cells (hERCCs) to pluripotent stem cells with a roughly 40-fold higher reprogramming efficiency compared with that of adult human dermal fibroblasts...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904624/application-of-transrectal-ultrasound-guided-repeat-needle-biopsy-in-the-diagnosis-of-prostate-cancer-in-chinese-population-a-retrospective-study
#13
Yi Wang, Xizhi Wang, Jiang Yu, Jun Ouyang, Weidong Shen, Yibin Zhou, Jianquan Hou, Duangai Wen, Jinxian Pu, Yuxi Shan, Boxin Xue
BACKGROUND: Transrectal ultrasound-guided repeat needle biopsy (TUGRNB) is widely used for diagnosis of prostate cancer (PCa). However, significance of TUGRNB in Chinese population was rarely reported. A retrospective study was conducted to evaluate the significance of TUGRNB applied in prediction of PCa in Chinese population. MATERIALS AND METHODS: A total of 960 from January 2009 to December 2012 were included. Repeat needle biopsy rate and PCa positive detection rate were evaluated...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27902606/preoperative-aspartate-aminotransferase-to-platelet-ratio-index-apri-is-a-predictor-on-postoperative-outcomes-of-hepatocellular-carcinoma
#14
JiWen Cheng, Pu Zhao, JiangBo Liu, Xi Liu, XuanLin Wu
Preoperative aspartate aminotransferase-to-platelet ratio index (APRI) has been identified as a biochemical marker for histological fibrogenesis and fibrosis in cirrhosis and prognosis of hepatocellular carcinoma (HCC). Whether preoperative APRI can predict postoperative short-term outcomes has not been studied. The purpose of this study was to investigate the ability of preoperative APRI to predict short-term outcomes following liver resection for HCC. APRI was evaluated in 360 patients undergoing liver resection for HCC...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27902236/corticicoccus-populi-gen-nov-sp-nov-a-member-of-the-family-staphylococcaceae-isolated-from-symptomatic-bark-of-populus-%C3%A3-euramericana-canker
#15
Yong Li, Sheng-Kun Wang, Han Xue, Ju-Pu Chang, Li-Min Guo, Xu-Qi Yang
Two gram-stain positive, aerobic, non-motile, bacterial strains were isolated from symptomatic bark tissue of Populus × euramericana canker. The isolates were able to grow between 10 and 37°C, pH 6 to 10 and 0-4% (w/v) NaCl, with optimal growth at 28-30°C, pH 7.0-8.0 and 2% (w/v) NaCl The strains were found to be oxidase positive and catalase negative. The menaquinone of the 26D10-3-4T was found to be MK-7 and the peptidoglycan type A3α based on L-Lys-Gly3-?Ala. The polar lipid profiles of 26D10-3-4T showed diphosphatidylglycerol, phosphatidylglycerol, two unidentified phospholipids and three unidentified glycolipids; the major fatty acids found were anteiso-C15:0, iso-C15:0, iso-C17:0 and anteiso-C17:0...
October 24, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27901454/signalment-clinical-features-and-outcome-for-male-horses-with-urethral-rents-following-perineal-urethrotomy-or-corpus-spongiotomy-33-cases-1989-2013
#16
Kati G Glass, Carolyn E Arnold, Dickson D Varner, M Keith Chaffin, James Schumacher
OBJECTIVE To describe the signalment, clinical features, and outcome for male horses with urethral rents following perineal urethrotomy (PU) or corpus spongiotomy (CS). DESIGN Retrospective case series. ANIMALS 33 horses. PROCEDURES Medical records of male horses examined because of hematuria or hemospermia caused by urethral rents that underwent PU or CS at a referral hospital between 1989 and 2013 were reviewed. Data regarding signalment, clinical features, urethroscopic findings, surgical treatment, and outcome were recorded...
December 15, 2016: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/27901391/comparison-of-antibacterial-effects-among-three-foams-used-with-negative-pressure-wound-therapy-in-an-ex-vivo-equine-perfused-wound-model
#17
Lore L Van Hecke, Maarten Haspeslagh, Katleen Hermans, Ann M Martens
OBJECTIVE To compare antibacterial effects among 3 types of foam used with negative-pressure wound therapy (NPWT) in an ex vivo equine perfused wound model. SAMPLES Abdominal musculocutaneous flaps from 6 equine cadavers. PROCEDURES Each musculocutaneous flap was continuously perfused with saline (0.9% NaCl) solution. Four 5-cm circular wounds were created in each flap and contaminated with 10(6) CFUs of both Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA). After a 1-hour incubation period, 1 of 4 treatments (NPWT with silver-impregnated polyurethane foam [NPWT-AgPU], polyurethane foam [NPWT-PU], or polyvinyl alcohol foam [NPWT-PVA] or a nonadherent dressing containing polyhexamethylene biguanide without NPWT [control]) was randomly applied to each wound...
December 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27901102/input-graph-the-hidden-geometry-in-controlling-complex-networks
#18
Xizhe Zhang, Tianyang Lv, Yuanyuan Pu
The ability to control a complex network towards a desired behavior relies on our understanding of the complex nature of these social and technological networks. The existence of numerous control schemes in a network promotes us to wonder: what is the underlying relationship of all possible input nodes? Here we introduce input graph, a simple geometry that reveals the complex relationship between all control schemes and input nodes. We prove that the node adjacent to an input node in the input graph will appear in another control scheme, and the connected nodes in input graph have the same type in control, which they are either all possible input nodes or not...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900552/giant-chordoma-in-the-thoracolumbar-spine-a-case-report-and-literature-review
#19
Feifei Pu, Baichuan Wang, Jianxiang Liu, Fengxia Chen, Zengwu Shao
STUDY DESIGN: Case report. PURPOSE: We present a rare case of a giant chordoma in the thoracolumbar spine and review the current literature. We describe its complicated clinical progression, hoping to shed light on the clinical management of this complex tumor. METHODS: We present a previously healthy 41-year-old man who experienced progressive low back pain at T10-L2 for the past 2 years. A giant tumor was detected on magnetic resonance imaging, and aspiration biopsy was used to obtain a definite pathological diagnosis...
November 29, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27899942/adiponectin-receptor-1-and-small-ubiquitin-like-modifier-4-polymorphisms-are-associated-with-risk-of-coronary-artery-disease-without-diabetes
#20
Hong Li, Ze Yang, Lian-Mei Pu, Xiang Li, Yang Ruan, Fan Yang, Shuai Meng, Duo Yang, Wei Yao, Hao Fu, Feng Zhang, Ze-Ning Jin
BACKGROUND: The genes encoding adiponectin receptor 1 (ADIPOR1) and small ubiquitin-like modifier 4 (SUMO4) have been linked to anti-atherogenic effects, but little is known about whether polymorphisms in the two genes, acting separately or interacting, affect risk of coronary artery disease (CAD) without diabetes. METHODS: We genotyped 200 CAD patients without diabetes and 200 controls without CAD or diabetes at three single-nucleotide polymorphisms (SNPs) in ADIPOR1 and one SNP in SUMO4, which were chosen based on previous studies...
September 2016: Journal of Geriatric Cardiology: JGC
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