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Zhang Feng

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https://www.readbyqxmd.com/read/28735351/multiple-correlation-analyses-revealed-complex-relationship-between-dna-methylation-and-mrna-expression-in-human-peripheral-blood-mononuclear-cells
#1
Fang-Fei Xie, Fei-Yan Deng, Long-Fei Wu, Xing-Bo Mo, Hong Zhu, Jian Wu, Yu-Fan Guo, Ke-Qin Zeng, Ming-Jun Wang, Xiao-Wei Zhu, Wei Xia, Lan Wang, Pei He, Peng-Fei Bing, Xin Lu, Yong-Hong Zhang, Shu-Feng Lei
DNA methylation is an important regulator on the mRNA expression. However, a genome-wide correlation pattern between DNA methylation and mRNA expression in human peripheral blood mononuclear cells (PBMCs) is largely unknown. The comprehensive relationship between mRNA and DNA methylation was explored by using four types of correlation analyses and a genome-wide methylation-mRNA expression quantitative trait locus (eQTL) analysis in PBMCs in 46 unrelated female subjects. An enrichment analysis was performed to detect biological function for the detected genes...
July 22, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28735174/tetherless-near-infrared-control-of-brain-activity-in-behaving-animals-using-fully-implantable-upconversion-microdevices
#2
Ying Wang, Xudong Lin, Xi Chen, Xian Chen, Zhen Xu, Wenchong Zhang, Qinghai Liao, Xin Duan, Xin Wang, Ming Liu, Feng Wang, Jufang He, Peng Shi
Many nanomaterials can be used as sensors or transducers in biomedical research and they form the essential components of transformative novel biotechnologies. In this study, we present an all-optical method for tetherless remote control of neural activity using fully implantable micro-devices based on upconversion technology. Upconversion nanoparticles (UCNPs) were used as transducers to convert near-infrared (NIR) energy to visible light in order to stimulate neurons expressing different opsin proteins. In our setup, UCNPs were packaged in a glass micro-optrode to form an implantable device with superb long-term biocompatibility...
July 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28735142/bifurcation-location-and-growth-of-aneurysm-size-are-significantly-associated-with-an-irregular-shape-of-unruptured-intracranial-aneurysms
#3
Xin Feng, Baorui Zhang, Erkang Guo, Luyao Wang, Zenguhi Qian, Peng Liu, Xiaolong Wen, Wenjuan Xu, Chuhan Jiang, Youxiang Li, Zhongxue Wu, Aihua Liu
BACKGROUND AND OBJECTIVE: Previous studies firmly proved that an irregular aneurysmal shape was strongly associated with intracranial aneurysm (IA) rupture, but it is unclear how irregularly shaped intracranial aneurysms (IAs) form. We aimed to identify the factors related to irregular shape of IAs. METHOD: We retrospectively analyzed of consecutive patients evaluated or treated for IA at our institution from June 2015 to July 2016. According to the imaging morphology of aneurysm, the enrolled patients are divided into irregular and regular group...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28734898/anopheles-vectors-in-mainland-china-while-approaching-malaria-elimination
#4
REVIEW
Shaosen Zhang, Shaohua Guo, Xinyu Feng, Aneta Afelt, Roger Frutos, Shuisen Zhou, Sylvie Manguin
China is approaching malaria elimination; however, well-documented information on malaria vectors is still missing, which could hinder the development of appropriate surveillance strategies and WHO certification. This review summarizes the nationwide distribution of malaria vectors, their bionomic characteristics, control measures, and related studies. After several years of effort, the area of distribution of the principal malaria vectors was reduced, in particular for Anopheles lesteri (synonym: An. anthropophagus) and Anopheles dirus s...
July 19, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28734822/icotinib-versus-whole-brain-irradiation-in-patients-with-egfr-mutant-non-small-cell-lung-cancer-and-multiple-brain-metastases-brain-a-multicentre-phase-3-open-label-parallel-randomised-controlled-trial
#5
Jin-Ji Yang, Caicun Zhou, Yisheng Huang, Jifeng Feng, Sun Lu, Yong Song, Cheng Huang, Gang Wu, Li Zhang, Ying Cheng, Chengping Hu, Gongyan Chen, Li Zhang, Xiaoqing Liu, Hong Hong Yan, Fen Lai Tan, Wenzhao Zhong, Yi-Long Wu
BACKGROUND: For patients with non-small-cell lung cancer (NSCLC) and multiple brain metastases, whole-brain irradiation (WBI) is a standard-of-care treatment, but its effects on neurocognition are complex and concerning. We compared the efficacy of an epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor (TKI), icotinib, versus WBI with or without chemotherapy in a phase 3 trial of patients with EGFR-mutant NSCLC and multiple brain metastases. METHODS: We did a multicentre, open-label, parallel randomised controlled trial (BRAIN) at 17 hospitals in China...
July 19, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28734262/mercury-risk-in-poultry-in-the-wanshan-mercury-mine-china
#6
Runsheng Yin, Wei Zhang, Guangyi Sun, Zhaohui Feng, James P Hurley, Liyuan Yang, Lihai Shang, Xinbin Feng
In this study, total mercury (THg) and methylmercury (MeHg) concentrations in muscles (leg and breast), organs (intestine, heart, stomach, liver) and blood were investigated for backyard chickens, ducks and geese of the Wanshan Mercury Mine, China. THg in poultry meat products range from 7.9 to 3917.1 ng/g, most of which exceeded the Chinese national standard limit for THg in meat (50 ng/g). Elevated MeHg concentrations (0.4-62.8 ng/g) were also observed in meat products, suggesting that poultry meat can be an important human MeHg exposure source...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28734252/river-sequesters-atmospheric-carbon-and-limits-the-co2-degassing-in-karst-area-southwest-china
#7
Tao Zhang, Jianhong Li, Junbing Pu, Jonathan B Martin, Mitra B Khadka, Feihong Wu, Li Li, Feng Jiang, Siyu Huang, Daoxian Yuan
CO2 fluxes across water-air interfaces of river systems play important roles in regulating the regional and global carbon cycle. However, great uncertainty remains as to the contribution of these inland water bodies to the global carbon budget. Part of the uncertainty stems from limited understanding of the CO2 fluxes at diurnal and seasonal frequencies caused by aquatic metabolism. Here, we measured surface water characteristics (temperature, pH, and DO, DIC, Ca(2+) concentrations) and CO2 fluxes across the air-water interface at two transects of Guijiang River, southwest China to assess the seasonal and diurnal dynamics of fluvial carbon cycling and its potential role in regional and global carbon budgets...
July 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28734151/magnetically-recyclable-reduced-graphene-oxide-nanosheets-magnetite-palladium-aerogel-with-superior-catalytic-activity-and-reusability
#8
Yan Feng, Hui Zhang, Baifu Xin, Jie Wu
A two-step method was employed to synthesize reduced graphene oxide nanosheets/magnetite-palladium (rGSs/Fe3O4-Pd) aerogel, with excellent catalytic activity and recyclability. Firstly, graphene oxide nanosheet (GS) hydrogels were formed by the self-assembly of GSs during the hydrothermal process. Meanwhile, hematite (α-Fe2O3) and Pd nanoparticles (NPs) were synthesized and anchored onto the surface of the hydrogel. During heat-treatment, GSs were reduced to rGSs, while nonmagnetic α-Fe2O3NPs were converted to magnetic Fe3O4 NPs...
July 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28734116/preparing-platelet-rich-plasma-with-whole-blood-harvested-intraoperatively-during-spinal-fusion
#9
Bin Shen, Zheng Zhang, Ning-Feng Zhou, Yu-Feng Huang, Yu-Jie Bao, De-Sheng Wu, Ya-Dong Zhang
BACKGROUND Platelet-rich plasma (PRP) has gained growing popularity in use in spinal fusion procedures in the last decade. Substantial intraoperative blood loss is frequently accompanied with spinal fusion, and it is unknown whether blood harvested intraoperatively qualifies for PRP preparation. MATERIAL AND METHODS Whole blood was harvested intraoperatively and venous blood was collected by venipuncture. Then, we investigated the platelet concentrations in whole blood and PRP, the concentration of growth factors in PRP, and the effects of PRP on the proliferation and viability of human bone marrow-derived mesenchymal stem cells (HBMSCs)...
July 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28733871/a-mdr-transporter-contributes-to-the-different-extracellular-production-of-sesquiterpene-pyridine-alkaloids-between-adventitious-root-and-hairy-root-liquid-cultures-of-tripterygium-wilfordii-hook-f
#10
Guo-Peng Miao, Juan Han, Ji-Feng Zhang, Chuan-Shu Zhu, Xing Zhang
TwMDR1 transports sesquiterpene pyridine alkaloids, wilforine and wilforgine, into the hairy roots of T. wilfordii Hook.f. resulting in low secretion ratio of alkaloids. Hairy roots (HRs) exhibit high growth rate and biochemical and genetic stability. However, varying secondary metabolites in HR liquid cultures mainly remain in root tissues, and this condition may affect cell growth and cause inconvenience in downstream extraction. Studies pay less attention to adventitious root (AR) liquid cultures though release ratio of some metabolites in AR liquid cultures is significantly higher than that of HR...
July 21, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28733666/improved-liver-r2-mapping-by-averaging-decay-curves
#11
Xinyuan Zhang, Jie Peng, Changqing Wang, Yanqiu Feng, Qianjin Feng, Xinzhong Li, Wufan Chen, Taigang He
Liver R2* mapping is often degraded by the low signal-to-noise ratio (SNR) especially in the presence of severe iron. This study aims to improve liver R2* mapping at low SNRs by averaging decay curves before the process of curve-fitting. Independently filtering echo images by nonlocal means (NLM) demonstrated improved quality of R2* mapping, but may introduce new errors due to the nonlinear nature of the NLM filter, during which the averaging weights may vary with different image contents at multiple echo times...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733548/the-survival-benefits-of-local-surgery-in-stage-iv-breast-cancer-are-not-affected-by-breast-cancer-subtypes-a-population-based-analysis
#12
San-Gang Wu, Wen-Weng Zhang, Jia-Yuan Sun, Feng-Yan Li, Huan-Xin Lin, Juan Zhou, Zhen-Yu He
This retrospective study aimed to investigate the clinical value of local surgery in stage IV BC and determined whether the survival outcomes were affected by the breast cancer subtype (BCS). Women with de novo stage IV BC from 2010 to 2013 were included using the Surveillance Epidemiology and End Results database. Univariate and multivariate Cox regression analyses were performed to evaluate the prognostic factors for breast cancer-specific survival (BCSS) and overall survival (OS). Among 9,256 patients were identified, 3,130 (33...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733537/depdc1-is-required-for-cell-cycle-progression-and-motility-in-nasopharyngeal-carcinoma
#13
Xuefei Feng, Chundong Zhang, Ling Zhu, Lian Zhang, Hongxia Li, Longxia He, Yan Mi, Yitao Wang, Jiang Zhu, Youquan Bu
DEP domain containing 1 (DEPDC1) is a newly identified cancer-related and cell cycle related gene and has been demonstrated as a novel therapeutic target for bladder cancer. However, the functional involvement and therapeutic potential of DEPDC1 in nasopharyngeal carcinoma (NPC) remains unclear. Our results showed that DEPDC1 was overexpressed at both mRNA and protein levels in NPC tissues compared with normal or non-tumor tissues. The siRNA-mediated DEPDC1 depletion resulted in significant inhibition of proliferation and delay in cell cycle progression in both NPC cell lines, CNE-1 and HNE-1...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732396/role-of-dams-in-the-phase-transfer-of-antibiotics-in-an-urban-river-receiving-wastewater-treatment-plant-effluent
#14
Xiaoyu Guo, Chenghong Feng, Jianhong Zhang, Chenhao Tian, Jingling Liu
Dams are universally constructed to change hydrodynamic forces and impound water in urban rivers, but few efforts have been made to expound the impact of dams on the transport of antibiotics in rivers. In this study, the main object and focus was to elucidate the intercept effect of rubber dam and the gate dam on the sediment-water phase redistribution of eight typical antibiotics along an urban river with the water replenished from wastewater treatment plants (WWTPs). The results show that the eight antibiotics were widely detected in the whole river segment, and the WWTPs were found to be the main sources...
July 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28732361/morusin-inhibits-cell-proliferation-and-tumor-growth-by-downregulating-c-myc-in-human-gastric-cancer
#15
Feng Wang, Dunke Zhang, Jingxin Mao, Xiao-Xue Ke, Rui Zhang, Chao Yin, Ning Gao, Hongjuan Cui
Morusin is a pure extract from the root bark of Morus australis (Moraceae). In recent years, morusin has been reported to exhibit anti-tumor biological activity in some types of human cancers through different mechanisms. Here, we attempted to investigate the inhibitory effect and mechanism of morusin on gastric cancer. Morusin markedly inhibited gastric cancer cell proliferation by down-regulating CDKs and Cyclins, such as CDK2, CDK4, Cyclin D1 and Cyclin E1. Additionally, morusin suppressed tumor growth in vitro and in vivo...
July 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732344/visible-light-driven-label-free-photoelectrochemical-immunosensor-based-on-tio2-s-bivo4-ag2s-nanocomposites-for-sensitive-detection-ota
#16
Jinhui Feng, Yueyun Li, Zengqiang Gao, Hui Lv, Xiaobo Zhang, Dawei Fan, Qin Wei
A label-free photoelectrochemical (PEC) platform with high visible-light activity for quantitative detection of the ochratoxin A (OTA) was developed by assembly of Ag2S nanoparticles (NPs) sensitized on titanium dioxide/red blood cell-like shape bismuth vanadate (TiO2/S-BiVO4) electrode via layer-by-layer (LBL) strategy. In this protocol, ascorbic acid was used as an efficient electron donor for scavenging photo-generated holes and inhibiting light driven electron-hole pair recombination. TiO2 has good photoelectric activity and large surface area...
July 13, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28732335/characteristics-and-source-apportionment-of-pm2-5-during-persistent-extreme-haze-events-in-chengdu-southwest-china
#17
Lulu Li, Qinwen Tan, Yuanhang Zhang, Miao Feng, Yu Qu, Junling An, Xingang Liu
Based on detailed data from Chengdu Plain (CP) from 6 January to 16 January, two typical haze episodes were analyzed to clarify the haze formation mechanism in winter. Weather conditions, chemical compositions, secondary pollutant transformation, optical properties of aerosols, the potential source contribution function (PSCF) and source apportionment were studied. The planetary boundary layer (PBL) height decreased distinctly during the haze episodes and restrained air pollutant vertical dispersion. As the haze worsened, the value of PBL × PM2...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28732288/lncrna-hotair-alleviates-rheumatoid-arthritis-by-targeting-mir-138-and-inactivating-nf-%C3%AE%C2%BAb-pathway
#18
Hong-Ju Zhang, Qiao-Feng Wei, Shu-Jun Wang, Hong-Jie Zhang, Xiu-Ying Zhang, Qin Geng, Yan-Hui Cui, Xiu-Hua Wang
Rheumatoid arthritis (RA) is a chronic and autoimmune-mediated inflammatory disease. We aimed to investigate the regulation of lncRNA HOTAIR in LPS-treated chondrocytes and RA mouse. Our results showed that HOTAIR expression was significantly reduced in LPS-treated chondrocytes. The HOTAIR was then over-expressed in chondrocytes by transfecting recombinant lentivirus carrying sequences encoding HOTAIR. The LPS-induced reduction of cell proliferation rate and production of two inflammatory factors interleukin (IL)-17, IL-23 were markedly inhibited...
July 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28732011/proteomics-analysis-reveals-a-dynamic-diurnal-pattern-of-photosynthesis-related-pathways-in-maize-leaves
#19
Dan Feng, Yanwei Wang, Tiegang Lu, Zhiguo Zhang, Xiao Han
Plant leaves exhibit differentiated patterns of photosynthesis rates under diurnal light regulation. Maize leaves show a single-peak pattern without photoinhibition at midday when the light intensity is maximized. This mechanism contributes to highly efficient photosynthesis in maize leaves. To understand the molecular basis of this process, an isobaric tag for relative and absolute quantitation (iTRAQ)-based proteomics analysis was performed to reveal the dynamic pattern of proteins related to photosynthetic reactions...
2017: PloS One
https://www.readbyqxmd.com/read/28731962/polymorphisms-in-cytochrome-p450-oxidoreductase-and-its-effect-on-drug-metabolism-and-efficacy
#20
Liang Gong, Cong-Min Zhang, Jin-Feng Lv, Hong-Hao Zhou, Lan Fan
Cytochrome P450 oxidoreductase (POR) has played a potential role in the metabolism of drugs and steroids by supplying electrons to microsomal cytochrome P450 (CYP) enzymes. More than 200 different POR mutations and polymorphisms causing more than 130 amino acid changes in the POR protein have been reported since 2004. A503V is a common amino acid sequence variant encoded by POR*28, whereas A287P and R457H are the most common disease-causing mutations in Europeans and Asians, respectively. Polymorphisms in the POR gene can affect POR activity, CYP-mediated drug metabolism activities, and the efficacy of several clinically used drugs...
July 20, 2017: Pharmacogenetics and Genomics
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