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https://www.readbyqxmd.com/read/27926879/in%C3%A2-vitro-derivation-and-propagation-of-spermatogonial-stem-cell-activity-from-mouse-pluripotent-stem-cells
#1
Yukiko Ishikura, Yukihiro Yabuta, Hiroshi Ohta, Katsuhiko Hayashi, Tomonori Nakamura, Ikuhiro Okamoto, Takuya Yamamoto, Kazuki Kurimoto, Kenjiro Shirane, Hiroyuki Sasaki, Mitinori Saitou
The in vitro derivation and propagation of spermatogonial stem cells (SSCs) from pluripotent stem cells (PSCs) is a key goal in reproductive science. We show here that when aggregated with embryonic testicular somatic cells (reconstituted testes), primordial germ cell-like cells (PGCLCs) induced from mouse embryonic stem cells differentiate into spermatogonia-like cells in vitro and are expandable as cells that resemble germline stem cells (GSCs), a primary cell line with SSC activity. Remarkably, GSC-like cells (GSCLCs), but not PGCLCs, colonize adult testes and, albeit less effectively than GSCs, contribute to spermatogenesis and fertile offspring...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27925798/excessive-time-on-social-networking-sites-and-disordered-eating-behaviors-among-undergraduate-students-appearance-and-weight-esteem-as-mediating-pathways
#2
Marisa Murray, Danijela Maras, Gary S Goldfield
Social networking sites (SNS) are a popular form of communication among undergraduate students. Body image concerns and disordered eating behaviors are also quite prevalent among this population. Maladaptive use of SNS has been associated with disordered eating behaviors; however, the mechanisms remain unclear. The present study examined if body image concerns (e.g., appearance and weight esteem) mediate the relationship between excessive time spent on SNS and disordered eating behaviors (restrained and emotional eating)...
December 2016: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/27923743/displacement-front-behavior-of-near-miscible-co2-flooding-in-decane-saturated-synthetic-sandstone-cores-revealed-by-magnetic-resonance-imaging
#3
Yu Liu, Ying Teng, Lanlan Jiang, Jiafei Zhao, Yi Zhang, Dayong Wang, Yongchen Song
It is of great importance to study the CO2-oil two-phase flow characteristic and displacement front behavior in porous media, for understanding the mechanisms of CO2 enhanced oil recovery. In this work, we carried out near miscible CO2 flooding experiments in decane saturated synthetic sandstone cores to investigate the displacement front characteristic by using magnetic resonance imaging technique. Experiments were done in three consolidated sandstone cores with the permeabilities ranging from 80 to 450mD...
December 3, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27921067/parallel-pathways-from-whisker-and-visual-sensory-cortices-to-distinct-frontal-regions-of-mouse-neocortex
#4
Varun Sreenivasan, Alexandros Kyriakatos, Celine Mateo, Dieter Jaeger, Carl C H Petersen
The spatial organization of mouse frontal cortex is poorly understood. Here, we used voltage-sensitive dye to image electrical activity in the dorsal cortex of awake head-restrained mice. Whisker-deflection evoked the earliest sensory response in a localized region of primary somatosensory cortex and visual stimulation evoked the earliest responses in a localized region of primary visual cortex. Over the next milliseconds, the initial sensory response spread within the respective primary sensory cortex and into the surrounding higher order sensory cortices...
July 2017: Neurophotonics
https://www.readbyqxmd.com/read/27920272/mcpip1-regnase-1-restricts-il-17a-and-il-17c-dependent-skin-inflammation
#5
Leticia Monin, Johann E Gudjonsson, Erin E Childs, Nilesh Amatya, Xianying Xing, Akash H Verma, Bianca M Coleman, Abhishek V Garg, Meaghan Killeen, Alicia Mathers, Nicole L Ward, Sarah L Gaffen
The IL-17 family cytokines IL-17A and IL-17C drive the pathogenesis of psoriatic skin inflammation, and anti-IL-17A Abs were recently approved to treat human psoriasis. Little is known about mechanisms that restrain IL-17 cytokine-mediated signaling, particularly IL-17C. In this article, we show that the endoribonuclease MCP-1-induced protein 1 (MCPIP1; also known as regnase-1) is markedly upregulated in human psoriatic skin lesions. Similarly, MCPIP1 was overexpressed in the imiquimod (IMQ)-driven mouse model of cutaneous inflammation...
December 5, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27920144/methyl-cpg-binding-protein-mbd1-regulates-neuronal-lineage-commitment-through-maintaining-adult-neural-stem-cell-identity
#6
Emily M Jobe, Yu Gao, Brian E Eisinger, Janessa K Mladucky, Charles C Giuliani, Laurel E Kelnhofer, Xinyu Zhao
: MBD1 belongs to a family of methyl-CpG binding proteins that are epigenetic "readers", linking DNA methylation to transcriptional regulation. MBD1 is expressed in neural stem cells residing in the dentate gyrus of the adult hippocampus (aNSCs), and MBD1 deficiency leads to reduced neuronal differentiation, impaired neurogenesis, learning deficits, and autism-like behaviors in mice; however the precise function of MBD1 in aNSCs remains unexplored. Here, we show that MBD1 is important for maintaining the integrity and stemness of NSCs, which is critical for their ability to generate neurons...
December 5, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27919737/histone-deacetylases-3-deletion-restrains-pm2-5-induced-mice-lung-injury-by-regulating-nf-%C3%AE%C2%BAb-and-tgf-%C3%AE-smad2-3-signaling-pathways
#7
Li-Zhi Gu, Hong Sun, Jian-Hui Chen
Acute lung injury (ALI) as a serious disease with high mortality has been emphasized as a threat to human health and life. Accumulating studies demonstrated that PM2.5 plays a significant role in metabolic and lung diseases. Histone deacetylases 3 (HDAC3) is an important regulator in control of gene transcription, required in up-regulation of inflammation-related signaling, and has been known as a key hotpot in treating a lot of chronic inflammatory diseases. TGF-β/Smad signaling pathway has been proven to be of significance in fibrosis development...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27916856/a-novel-gravity-compensation-method-for-high-precision-free-ins-based-on-extreme-learning-machine
#8
Xiao Zhou, Gongliu Yang, Qingzhong Cai, Jing Wang
In recent years, with the emergency of high precision inertial sensors (accelerometers and gyros), gravity compensation has become a major source influencing the navigation accuracy in inertial navigation systems (INS), especially for high-precision INS. This paper presents preliminary results concerning the effect of gravity disturbance on INS. Meanwhile, this paper proposes a novel gravity compensation method for high-precision INS, which estimates the gravity disturbance on the track using the extreme learning machine (ELM) method based on measured gravity data on the geoid and processes the gravity disturbance to the height where INS has an upward continuation, then compensates the obtained gravity disturbance into the error equations of INS to restrain the INS error propagation...
November 29, 2016: Sensors
https://www.readbyqxmd.com/read/27916098/-knockdown-of-nedd9-inhibits-the-proliferation-invasion-and-migration-of-esophageal-carcinoma-ec109-cells
#9
Wen Zhang, Shaojun Li, Yunlong Zhao, Nannan Guo, Yingjie Li
Objective To observe the expression of the neural precursor cell expressed, developmentally down-regulated 9 (NEDD9) in esophageal cancer, to investigate the impact of decreased expression of NEDD9 on invasion and migration, and to explicit the function of NEDD9 in EC109 human esophageal cancer cell line. Methods Immunohistochemical staining was used to detect the expression of NEDD9 in human esophageal cancer tissues and paracancerous normal tissues. RNA interfering (RNAi) was used to knockdown NEDD9 in EC109 cells...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27916089/-estrogen-exerts-anti-inflammatory-effects-by-inhibiting-nf-%C3%AE%C2%BAb-pathway-through-binding-with-estrogen-receptor-%C3%AE-on-synovicytes-of-osteoarthritis
#10
Enwei Zhang, Hongtao Zhang, Fengzhou Liu, Chuan Dong, Yun Yao, Zhe Yun, Weiming Jian, Bao'an Ma
Objective To investigate the mechanism of estrogen's anti-inflammatory effects on synovial cells during the pathogenic process of osteoarthritis. Methods We isolated synovicytes from synovium tissues and identified the cells with flow cytometry. Then we detected the expression level of estrogen receptor β (ERβ) in synovicytes with immunofluorescence staining. The synovicytes were divided into control group, group pretreated with 10 ng/mL IL-1β, group pretreated with 10 ng/mL IL-1β and 10(-7) mol/L estrogen, group pretreated with 10 ng/mL IL-1β, 10(-7) mol/L estrogen and specific antagonist of ERβ, 10(-5) mol/L tetrahydrocannabinol (THC)...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27915080/a-nudge-in-a-healthier-direction-how-environmental-cues-help-restrained-eaters-pursue-their-weight-control-goal
#11
Aline E Stämpfli, Sabrina Stöckli, Thomas A Brunner
Losing weight is a goal for many people, but it is hard to pursue. However, dieting cues in the environment hold promise for improving individuals' eating behavior. For example, exposure to thin, human-like sculptures by the artist Alberto Giacometti has been found to promote healthy snack choices at a vending machine. Whether health- or weight-related processes drive such effects has not yet been determined. However, a detailed understanding of the content-related drivers of environmental cues' effects provides the first indications regarding a cue's possible use...
November 30, 2016: Appetite
https://www.readbyqxmd.com/read/27914750/-medical-prescription-and-informed-consent-for-the-use-of-physical-restraints-in-nursing-homes-in-the-canary-islands-spain
#12
Gabriel J Estévez-Guerra, Emilio Fariña-López, Eva Penelo
OBJECTIVE: To identify the frequency of completion of informed consent and medical prescription in the clinical records of older patients subject to physical restraint, and to analyse the association between patient characteristics and the absence of such documentation. METHODS: A cross-sectional and descriptive multicentre study with direct observation and review of clinical records was conducted in nine public nursing homes, comprising 1,058 beds. RESULTS: 274 residents were physically restrained...
November 30, 2016: Gaceta Sanitaria
https://www.readbyqxmd.com/read/27914337/restrain-recombination-by-spraying-pyrolysis-tio2-on-nio-film-for-quinoxaline-based-p-type-dye-sensitized-solar-cells
#13
Ying Yu, Xing Li, Zhongjin Shen, Xiaoyu Zhang, Peng Liu, Yuting Gao, Tao Jiang, Jianli Hua
In this work, we reported two new quinoxaline-based sensitizers (BQI and BQII) for p-type dye-sensitized solar cells (p-DSSCs) featuring carboxylic acid and pyridine as anchoring groups, respectively, in combination with triphenylamine donor. The optical, electrochemical and photovoltaic properties of BQI and BQII were investigated. Results showed that BQI-based p-DSSC with carboxylic acid anchoring group obtained higher photoelectric conversion efficiency (PCE) of 0.140%. To further optimize the device performance, we added a layer of TiO2 on the surface of NiO film as a barrier layer, which contributed to the improvement of the photocurrent density from 3...
November 10, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914002/phenotypic-and-genotypic-characterization-of-bacteriocinogenic-enterococci-against-clostridium-botulinum
#14
Awad A Shehata, Reda Tarabees, Shereen Basiouni, Mahmoud Gamil, Ahmed S Kamal, Monika Krüger
The present study aimed to characterize Enterococcus faecalis (n = -6) and Enterococcus faecium (n = 1) isolated from healthy chickens to find a novel perspective probiotic candidate that antagonize Clostridium botulinum types A, B, D, and E. The isolated enterococci were characterized based on phenotypic properties, PCR, and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF). The virulence determinants including hemolytic activity on blood agar, gelatinase activity, sensitivity to vancomycin, and presence of gelatinase (gelE) and enterococcal surface protein (esp) virulence genes were investigated...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27910585/the-eddy-current-probe-array-for-keda-torus-experiment
#15
Zichao Li, Hong Li, Cui Tu, Jintong Hu, Wei You, Bing Luo, Mingsheng Tan, Yolbarsop Adil, Yanqi Wu, Biao Shen, Bingjia Xiao, Ping Zhang, Wenzhe Mao, Hai Wang, Xiaohui Wen, Haiyang Zhou, Jinlin Xie, Tao Lan, Adi Liu, Weixing Ding, Chijin Xiao, Wandong Liu
In a reversed field pinch device, the conductive shell is placed as close as possible to the plasma so as to balance the plasma during discharge. Plasma instabilities such as the resistive wall mode and certain tearing modes, which restrain the plasma high parameter operation, respond closely with conditions in the wall, in essence the eddy current present. Also, the effect of eddy currents induced by the external coils cannot be ignored when active control is applied to control instabilities. One diagnostic tool, an eddy current probe array, detects the eddy current in the composite shell...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910133/physical-restraints-and-associations-with-neuropsychiatric-symptoms-and-personal-characteristics-in-residential-care-a-cross-sectional-study
#16
Marja Kuronen, Hannu Kautiainen, Pertti Karppi, Sirpa Hartikainen, Hannu Koponen
BACKGROUND: Physical restraints are widely used in residential care. The objective was to investigate restraint use and its associations with neuropsychiatric symptoms and personal characteristics in residential care. METHODS: Data were collected in the South Savo Hospital District from 66 of 68 public or private institutions providing long-term residential care. Nurses assessed the use of physical restraints and neuropsychiatric symptoms (NPS) included in the symptom list of the Neuropsychiatric Inventory (NPI)...
December 2, 2016: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/27908112/oscillating-electric-field-effects-on-adsorbed-water-at-rutile-and-anatase-tio2-surfaces
#17
Zdenek Futera, Niall J English
We have performed non-equilibrium molecular dynamics simulations of various TiO2/water interfaces at ambient temperature in presence of oscillating electric fields in frequency range 20-100 GHz and RMS intensities 0.05-0.25 V/Å. Although the externally applied fields are by one order of magnitude lower than the intrinsic electric field present on the interfaces (∼1.5-4.5 V/Å), significant non-thermal coupling of rotational and translational motion of water molecules was clearly observed. Enhancement of the motion, manifested by increase of diffusivity, was detected in the first hydration layer, which is known to be heavily confined by adsorption to the TiO2 surface...
November 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27906433/microrna-185-5p-modulates-chemosensitivity-of-human-non-small-cell-lung-cancer-to-cisplatin-via-targeting-abcc1
#18
K Pei, J-J Zhu, C-E Wang, Q-L Xie, J-Y Guo
OBJECTIVE: MicroRNA-185-5p (miR-185-5p) dysregulation is found in various human cancers. Our purpose is to investigate the association of miR-185-5p expression with the sensitivity of non-small cell lung cancer (NSCLC) to cisplatin. MATERIALS AND METHODS: Real-time PCR or Western blot assay was performed to detect the expression of mature miR-185-5p and ATP-binding cassette, subfamily C, member 1 (ABCC1) protein. Cell lines with abnormal expression of miR-185-5p were generated using miR-185-5p inhibitor and mimics...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27904874/imaging-of-accidental-contamination-by-fluorine-18-solution-a-quick-troubleshooting-procedure
#19
Kalevi Kairemo, Aki Kangasmäki
To the best of our knowledge, imaging of accidental exposure to radioactive fluorine-18 (F-18) due to liquid spill has not been described earlier in the scientific literature. The short half-life of F-18 (t½=110 min), current radiation safety requirements, and Good Manufacturing Practice (GMP) regulations on radiopharmaceuticals have restrained the occurrence of these incidents. The possibility of investigating this type of incidents by gamma and positron imaging is also quite limited. Additionally, a quick and precise analysis of radiochemical contamination is cumbersome and sometimes challenging if the spills of radioactive materials are low in activity...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27903730/network-patterns-associated-with-navigation-behaviors-are-altered-in-aged-nonhuman-primates
#20
James R Engle, Christopher J Machado, Michele R Permenter, Julie A Vogt, Andrew P Maurer, Alicia M Bulleri, Carol A Barnes
: The ability to navigate through space involves complex interactions between multiple brain systems. Although it is clear that spatial navigation is impaired during aging, the networks responsible for these altered behaviors are not well understood. Here, we used a within-subject design and [(18)F]FDG-microPET to capture whole-brain activation patterns in four distinct spatial behaviors from young and aged rhesus macaques: constrained space (CAGE), head-restrained passive locomotion (CHAIR), constrained locomotion in space (TREADMILL), and unconstrained locomotion (WALK)...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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