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Yifan Cheng

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https://www.readbyqxmd.com/read/29132042/long-range-interactions-keep-bacterial-cells-from-liquid-solid-interfaces-evidence-of-a-bacteria-exclusion-zone-near-nafion-surfaces-and-possible-implications-for-bacterial-attachment
#1
Yifan Cheng, Carmen I Moraru
Hydrophilic surfaces of both abiotic and biological origin have been shown to bear particle-exclusion zones as large as hundreds of micrometers at liquid-solid interfaces. Here we present the first systematic investigation and evidence for bacteria-free exclusion zones for several bacterial strains, including pathogens associated with hospital infections and/or foodborne outbreaks: Staphylococcus aureus, Escherichia coli O157:H7, and Listeria monocytogenes. Tests were carried out both in a phosphate buffer, as well as triptic soy broth (TSB) of high ionic strength...
November 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29113239/cd109-expression-is-upregulated-in-penile-squamous-cell-carcinoma
#2
Fengyun Dong, Jin Wang, Yinghua Xu, Zuowang Cheng, Xiaocui Chen, Yifan Wang, Ju Liu
Cluster of differentiation (CD) 109 is a glycosylphosphatidylinositol-anchored cell surface glycoprotein and a co-receptor for transforming growth factor β. The expression of CD109 has been detected in squamous cell carcinoma of the lung, esophagus, skin and gallbladder. The aim of the present study was to evaluate CD109 expression in penile squamous cell carcinoma (PSCC). CD109 expression in PSCC tumor and adjacent tissues from 45 specimens in tissue microarrays was examined by immunohistochemical analyses...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29092494/high-precision-multi-node-clock-network-distribution
#3
Xing Chen, Yifan Cui, Xing Lu, Cheng Ci, Xuesong Zhang, Bo Liu, Hong Wu, Tingsong Tang, Kebin Shi, Zhigang Zhang
A high precision multi-node clock network for multiple users was built following the precise frequency transmission and time synchronization of 120 km fiber. The network topology adopts a simple star-shaped network structure. The clock signal of a hydrogen maser (synchronized with UTC) was recovered from a 120 km telecommunication fiber link and then was distributed to 4 sub-stations. The fractional frequency instability of all substations is in the level of 10(-15) in a second and the clock offset instability is in sub-ps in root-mean-square average...
October 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29071494/highly-efficient-isolation-and-release-of-circulating-tumor-cells-based-on-size-dependent-filtration-and-degradable-zno-nanorods-substrate-in-a-wedge-shaped-microfluidic-chip
#4
Songzhan Li, Yifan Gao, Xiran Chen, Luman Qin, Boran Cheng, Shubin Wang, Shengxiang Wang, Guangxin Zhao, Kan Liu, Nangang Zhang
Circulating tumor cells (CTCs) have been regarded as the major cause of metastasis, holding significant insights for tumor diagnosis and treatment. Although many efforts have been made to develop methods for CTC isolation and release in microfluidic system, it remains significant challenges to realize highly efficient isolation and gentle release of CTCs for further cellular and bio-molecular analyses. In this study, we demonstrate a novel method for CTC isolation and release using a simple wedge-shaped microfluidic chip embedding degradable znic oxide nanorods (ZnNRs) substrate...
October 25, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/29070851/association-of-leisure-time-physical-activity-and-nmr-detected-circulating-amino-acids-in-peripubertal-girls-a-7-5-year-longitudinal-study
#5
Xiaobo Zhang, Petri Wiklund, Na Wu, Yifan Yang, Haihui Zhuang, Sulin Cheng
This study investigated the longitudinal associations of physical activity and circulating amino acids concentration in peripubertal girls. Three hundred ninety-six Finnish girls participated in the longitudinal study from childhood (mean age 11.2 years) to early adulthood (mean age 18.2 years). Circulating amino acids were assessed by nuclear magnetic resonance spectroscopy. LTPA was assessed by self-administered questionnaire. We found that isoleucine, leucine and tyrosine levels were significantly higher in individuals with lower LTPA than their peers at age 11 (p < 0...
October 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28976767/programmable-regulation-of-dna-conjugation-to-gold-nanoparticles-via-strand-displacement
#6
Cheng Zhang, Ranfeng Wu, Yifan Li, Qiang Zhang, Jing Yang
Methods for conjugating DNA to gold nanoparticles (AuNPs) have recently attracted considerable attention. The ability to control such conjugation in a programmable way is of great interest. Here, we have developed a logic-based method for manipulating the conjugation of thiolated DNA species to AuNPs via cascading DNA strand displacement. Using this method, several logic-based operation systems are established and up to three kinds of DNA signals are introduced at the same time. In addition, a more sensitive catalytic logic-based operation is also achieved based on an entropy-driven process...
October 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28934548/controlling-styrene-maleic-acid-lipid-particles-through-raft
#7
Anton A A Smith, Henriette E Autzen, Tomas Laursen, Vincent Wu, Max Yen, Aaron Hall, Scott D Hansen, Yifan Cheng, Ting Xu
The ability of styrene maleic acid copolymers to dissolve lipid membranes into nanosized lipid particles is a facile method of obtaining membrane proteins in solubilized lipid discs while conserving part of their native lipid environment. While the currently used copolymers can readily extract membrane proteins in native nanodiscs, their highly disperse composition is likely to influence the dispersity of the discs as well as the extraction efficiency. In this study, reversible addition-fragmentation chain transfer was used to control the polymer architecture and dispersity of molecular weights with a high-precision...
October 9, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28919177/effects-of-gnrhr-polymorphisms-on-sperm-quality-in-chinese-water-buffalo
#8
Gang Wang, Linlin Hao, Yunyun Cheng, Shuai Li, Yu Zhang, Chen Lv, Wenzhen Wei, Shan Huang, Hongyu Shi, Lijie Dong, Yifan Zhang, Hao Yu, Jiabao Zhang
Gonadotropin-releasing hormone receptor (GnRHR) plays a critical physiological role in animal reproduction and is a potential marker for improving sperm quality. In the present study, eight SNPs (g.539T>C, g.640A>G, g.655T>C, g.707T>C, g.812A>G, g.18951A>T g.16867T>C and g.18953Indel GGCAAAGTAA) were detected in the GnRHR gene from one-hundred-sixty-five water buffalo by direct sequencing and identification of overlapping peaks. All SNPs were associated significantly with the ejaculate volume and two genes (g...
November 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28899098/heterodimers-made-of-upconversion-nanoparticles-and-metal-organic-frameworks
#9
Yifan Li, Zhenghan Di, Jinhong Gao, Ping Cheng, Chunzhi Di, Ge Zhang, Bei Liu, Xinghua Shi, Ling-Dong Sun, Lele Li, Chun-Hua Yan
Creating nanoparticle dimers has attracted extensive interest. However, it still remains a great challenge to synthesize heterodimers with asymmetric compositions and synergistically enhanced functions. In this work, we report the synthesis of high quality heterodimers composed of porphyrinic nanoscale metal-organic frameworks (nMOF) and lanthanide-doped upconversion nanoparticles (UCNPs). Due to the dual optical properties inherited from individual nanoparticles and their interactions, absorption of low energy photons by the UCNPs is followed by energy transfer to the nMOFs, which then undergo activation of porphyrins to generate singlet oxygen...
September 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28842939/a-one-dimensional-fluidic-nanogenerator-with-a-high-power-conversion-efficiency
#10
Yifan Xu, Peining Chen, Jing Zhang, Songlin Xie, Fang Wan, Jue Deng, Xunliang Cheng, Yajie Hu, Meng Liao, Bingjie Wang, Xuemei Sun, Huisheng Peng
Electricity generation from flowing water has been developed for over a century and plays a critical role in our lives. Generally, heavy and complex facilities are required for electricity generation, while using these technologies for applications that require a small size and high flexibility is difficult. Here, we developed a fluidic nanogenerator fiber from an aligned carbon nanotube sheet to generate electricity from any flowing water source in the environment as well as in the human body. The power conversion efficiency reached 23...
August 26, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28828929/prognostic-value-of-serum-thioredoxin-levels-in-ischemic-stroke
#11
Tieer Yu, Wanli Zhang, Yuanshao Lin, Qian Li, Jie Xue, Zhengyi Cai, Yifan Cheng, Bei Shao
OBJECTIVES: Thioredoxin (Trx) is one of significant antioxidative molecules to diminish oxidative stress. Current evidence suggests that Trx is a potent antioxidant with cytoprotective functions. The aim of our study was to investigate specifically the association between serum Trx levels and acute ischemic stroke (AIS) patients. METHODS: 198 AIS patients and 75 controls were enrolled to the study. Serum Trx levels were measured using an enzyme-linked immunosorbent assay (ELISA)...
August 22, 2017: Neurological Research
https://www.readbyqxmd.com/read/28819881/resveratrol-induces-apoptosis-and-inhibits-adipogenesis-by-stimulating-the-sirt1-ampk%C3%AE-foxo1-signalling-pathway-in-bovine-intramuscular-adipocytes
#12
Xiaomu Liu, Hongbo Zhao, Qing Jin, Wei You, Haijian Cheng, Yifan Liu, Enliang Song, Guifen Liu, Xiuwen Tan, Xianglun Zhang, Fachun Wan
Sirtuin type 1 (SIRTl) and AMP-activated protein kinase (AMPK) play important roles in regulating energy metabolism, cell proliferation and differentiation, ageing, apoptosis, and metabolism. The effect of 100, 200, and 400 μm Resveratrol (RES), an activator of SIRT1, on apoptosis of bovine intramuscular adipocytes was investigated by nuclear staining, flow cytometry, quantitative real-time polymerase chain reaction, and western blotting. Results show that RES inhibited adipogenesis, decreased cell viability, and increased apoptotic rates in a dose-dependent way...
August 17, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28810891/the-variation-in-urinary-calcium-levels-in-adult-patients-with-fracture-and-surgical-intervention
#13
Junfei Wang, Xin Zheng, Liming Zhang, Yifan Zhang, Jin Xiong, Yixin Cheng, Hongfei Shi, Xusheng Qiu, Leqin Zhou, Xizhao Sun
BACKGROUND: Generally, a higher calcium diet is fed to fracture patients after surgery. However, recent studies have indicated that higher dietary calcium intakes increase the risk of urinary stones for fracture patients. Therefore, this study aimed to observe the variation in urinary calcium levels among fracture patients who underwent surgery, based on fracture type, fracture location, age and gender. METHODS: A total of 768 subjects were enrolled in this study from 2012 to 2015 and were divided into 2 groups: group A (fracture patients who underwent surgery) and group B (normal patients without fracture)...
August 15, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28757576/the-association-between-cardiorespiratory-fitness-and-gut-microbiota-composition-in-premenopausal-women
#14
Yifan Yang, Yi Shi, Petri Wiklund, Xiao Tan, Na Wu, Xiaobo Zhang, Olli Tikkanen, Chenhong Zhang, Eveliina Munukka, Sulin Cheng
The aim of this study was to investigate the association between cardiorespiratory fitness and gut microbiota composition in premenopausal women. The participants consisted of 71 premenopausal Finnish women (aged 19-49 years). Gut microbiota were analyzed using flow cytometry, 16S rRNA gene hybridization and DNA-staining. Maximum oxygen uptake (VO2max) was assessed by respiratory gas analyzer and body composition by Bioimpdance. We found that participants with low VO2max had lower Bacteroides, but higher Eubacterium rectale-Clostridium coccoides than the high VO2max group (p < 0...
July 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28687994/measurement-and-decomposition-of-energy-efficiency-of-northeast-china-based-on-super-efficiency-dea-model-and-malmquist-index
#15
Xiaojun Ma, Yan Liu, Xiaoxue Wei, Yifan Li, Mengchen Zheng, Yudong Li, Chaochao Cheng, Yumei Wu, Zhaonan Liu, Yuanbo Yu
Nowadays, environment problem has become the international hot issue. Experts and scholars pay more and more attention to the energy efficiency. Unlike most studies, which analyze the changes of TFEE in inter-provincial or regional cities, TFEE is calculated with the ratio of target energy value and actual energy input based on data in cities of prefecture levels, which would be more accurate. Many researches regard TFP as TFEE to do analysis from the provincial perspective. This paper is intended to calculate more reliably by super efficiency DEA, observe the changes of TFEE, and analyze its relation with TFP, and it proves that TFP is not equal to TFEE...
July 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28658211/electron-cryo-microscopy-structure-of-the-mechanotransduction-channel-nompc
#16
Peng Jin, David Bulkley, Yanmeng Guo, Wei Zhang, Zhenhao Guo, Walter Huynh, Shenping Wu, Shan Meltzer, Tong Cheng, Lily Yeh Jan, Yuh-Nung Jan, Yifan Cheng
Mechanosensory transduction for senses such as proprioception, touch, balance, acceleration, hearing and pain relies on mechanotransduction channels, which convert mechanical stimuli into electrical signals in specialized sensory cells. How force gates mechanotransduction channels is a central question in the field, for which there are two major models. One is the membrane-tension model: force applied to the membrane generates a change in membrane tension that is sufficient to gate the channel, as in the bacterial MscL channel and certain eukaryotic potassium channels...
July 6, 2017: Nature
https://www.readbyqxmd.com/read/28591576/regulation-of-rvb1-rvb2-by-a-domain-within-the-ino80-chromatin-remodeling-complex-implicates-the-yeast-rvbs-as-protein-assembly-chaperones
#17
Coral Y Zhou, Caitlin I Stoddard, Jonathan B Johnston, Michael J Trnka, Ignacia Echeverria, Eugene Palovcak, Andrej Sali, Alma L Burlingame, Yifan Cheng, Geeta J Narlikar
The hexameric AAA+ ATPases Rvb1 and Rvb2 (Rvbs) are essential for diverse processes ranging from metabolic signaling to chromatin remodeling, but their functions are unknown. While originally thought to act as helicases, recent proposals suggest that Rvbs act as protein assembly chaperones. However, experimental evidence for chaperone-like behavior is lacking. Here, we identify a potent protein activator of the Rvbs, a domain in the Ino80 ATPase subunit of the INO80 chromatin-remodeling complex, termed Ino80INS...
June 6, 2017: Cell Reports
https://www.readbyqxmd.com/read/28559351/positive-impacts-of-early-auditory-training-on-cortical-processing-at-an-older-age
#18
Yuan Cheng, Guoqiang Jia, Yifan Zhang, Huanhuan Hao, Ye Shan, Liping Yu, Xinde Sun, Qingyin Zheng, Nina Kraus, Michael M Merzenich, Xiaoming Zhou
Progressive negative behavioral changes in normal aging are paralleled by a complex series of physical and functional declines expressed in the cerebral cortex. In studies conducted in the auditory domain, these degrading physical and functional cortical changes have been shown to be broadly reversed by intensive progressive training that improves the spectral and temporal resolution of acoustic inputs and suppresses behavioral distractors. Here we found older rats that were intensively trained on an attentionally demanding modulation-rate recognition task in young adulthood substantially retained training-driven improvements in temporal rate discrimination abilities over a subsequent 18-mo epoch-that is, forward into their older age...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28550250/frequency-dependent-changes-in%C3%A2-the%C3%A2-amplitude-of-low-frequency-fluctuations-in-mild-cognitive-impairment-with-mild-depression
#19
Yuxia Li, Bin Jing, Han Liu, Yifan Li, Xuan Gao, Yongqiu Li, Bin Mu, Haikuo Yu, Jinbo Cheng, Peter B Barker, Hongxing Wang, Ying Han
BACKGROUND: Depression is a potential marker of preclinical Alzheimer's disease (AD). However, little is known about the abnormal characteristics revealed by resting-state functional magnetic resonance imaging (rs-fMRI) in mild cognitive impairment (MCI) subjects with depressive symptoms (MCI-d). OBJECTIVE: The study was to examine whether abnormalities in amplitudes of low-frequency oscillation occurred in MCI-d and tried to find the possible spectrum showed higher recognition ability to the diagnosis by utilizing functional MRI (fMRI)...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28525882/interfacially-crosslinked-composite-porous-membranes-for-ultrafast-removal-of-anionic-dyes-from-water-through-permeating-adsorption
#20
Cuijing Liu, Liang Cheng, Yifan Zhao, Liping Zhu
The dye wastewater is one of the most difficult industrial wastewaters to treat. It keeps a big challenge to realize fast removal of dyes from water by membrane filtration due to the trade-off between separation selectivity and permeation flux for ultrafiltration or nanofiltration (NF) process. Here we report novel composite porous membranes which can remove anionic dyes from water by ultrafast permeating adsorption. A crosslinked polyethyleneimine (PEI) polymer with strong adsorption ability was incorporated onto a nylon microfiltration membrane by the interfacial amidation reaction between PEI and trimesoyl chloride...
April 12, 2017: Journal of Hazardous Materials
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