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Kostanovskiy I, Schumann FO, Aliaev Y, Wei Z, Kirschner J. Core-resonant double photoemission from palladium films. J Phys Condens Matter 2016; 28:015601. [PMID: 26648513 DOI: 10.1088/0953-8984/28/1/015601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We studied the core-resonant double photoemission process from palladium films with linearly polarized synchrotron radiation. We excited either the 3d or 4p core level and focused on the Auger transitions which leave two holes in the valence band. We find that the two-dimensional energy distributions are markedly different for the 3d and 4p decay. The 3d decay can be understood by a sequential emission of the two electrons while the 4p decay proceeds in a single step. Despite the large differences in the two-dimensional energy spectra we find the shape of the energy sum spectra rather similar. For the description of the 4p decay we propose a model which uses available single electron spectra, but suggest an alternative interpretation of these data. With this we are able to explain the range over which the available energy is shared. Key assumptions of the model are verified by our experiments on the 3d decay.
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Affiliation(s)
- I Kostanovskiy
- Max-Planck Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
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152
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Yang X, Zhang K, Ye X, Zheng A, Huang G, Li W, Wei Z, Wang J, Han X, Ni X, Meng M, Ni Y, Yuan Q, Xing C. Artificial pneumothorax for pain relief during microwave ablation of subpleural lung tumors. Indian J Cancer 2016; 52 Suppl 2:e80-3. [PMID: 26728680 DOI: 10.4103/0019-509x.172519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND When microwave ablation (MWA) is used for subpleural lesions, severe pain was the common side effect under the local anesthesia conditions during the procedure and postprocedure. To study the pain relief effect of artificial pneumothorax in the treatment of subpleural lung tumors with MWA. MATERIALS AND METHODS From February 2012 to October 2014, 37 patients with 40 subpleural lung tumors underwent MWA, including 17 patients of 19 sessions given artificial pneumothorax prior to MWA (group-I), and 20 patients of 21 sessions without artificial pneumothorax (group-II). Patient's pain assessment scores (10-point visual analog scale [VAS]) at during-procedure, 6, 12, 24, and 48 h after the MWA procedure and mean 24 h morphine dose were compared between the two groups. Complications of the artificial pneumothorax were also summarized. RESULTS Pain VAS were 0.53, 0.65, 1.00, 0.24, and 0.18 at during-procedure, 6, 12, 24, and 48 h for group-I and 5.53, 2.32, 2.82, 1.21, and 0.21 for group-II, respectively. Pain VAS in group I was significantly decreased at during-procedure, 6, 12, and 24 h after the MWA (P < 0.001). No statistical pain VAS difference was observed at 48 h after the MWA between the two groups (P > 0.05). The mean 24 h morphine dose was 5.00 mg in group-I and 12.63 mg in group-II (P = 0.000). "Artificial pneumothorax" related complications occurred in two patients from group-I, including one pleural effusion and one minor hemoptysis. No patient in group-I and group-II died during the procedure or in 30 days after MWA. CONCLUSION Artificial pneumothorax is a safe and effective method for pain relief during MWA of subpleural lung tumors.
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Affiliation(s)
| | | | - X Ye
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
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Hew K, Miller P, Sun J, Wei Z, Zhang G, Lu Y, Mills G, Slingerland J, El-Ashry D, Simpkins F. Abstract AS31: MEK inhibition reverses antiestrogen resistance in ovarian cancer (OVCA) via alteration of cell cycle pathways and MAPK/estrogen regulated gene expression. Clin Cancer Res 2015. [DOI: 10.1158/1557-3265.ovcasymp14-as31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
BACKGROUND: It is estimated that 67% of epithelial OVCAs are estrogen receptor (ER) positive. However, the response to anti-estrogen therapy in OVCA remains marginal. The Ras/Raf/MEK/MAPK pathway is hyperactivated in 40% of OVCAs. We have previously shown that estrogens further activate kinases such as Src, ER and Src kinase binding in the cytoplasm suggesting a non-genomic role or ER in OVCA. We postulated that estrogens further activate MAPK signaling and combination ER blockade with MEK inhibition would block cross-talk and increase the efficacy of ER blockade.
METHODS: The effects of treatment with MEK inhibitor (AZD6244) and anti-estrogen (Fulvestrant), each alone or together, on cell cycle and cell survival were evaluated in ER+ OVCA lines in vitro. Drug effects on xenograft tumor growth were assayed in vivo in NOD/SCIDs. Reverse phase protein lysate array (RPPA) analysis and gene expression analysis (GEA) were performed to evaluate biomarkers of drug response. Finally, a previously reported MAPK gene signature identified in breast cancer was analyzed in the OVCA lines treated with AZD6244 and combination treatment. And using alteration of gene expression upon MEKi treatment as suggestive of MAPK regulation, we define a MAPK gene signature originating from ovarian cancer cells.
RESULTS: RPPA analysis of high grade serous tumors from the TCGA (n=408) demonstrates that over 70% of tumors have phosphorylated MEK and MAPK, and patients with ER+ cancers and high pMAPK or pMEK (top50%), have a worse overall survival than those with low pMAPK or pMEK. Estrogen (E2) increases phosphorylation of MEK in ER+ OVCA cells. Fulvestrant caused minimal growth arrest after treatment demonstrating intrinsic resistance. AZD6244 caused loss of pMAPK, partial G1 cell cycle arrest and a modest increase in p27 levels in a dose dependent manner after treatment. However, responsiveness of OVCA cells to fulvestrant increased by addition of AZD6244 in vitro, with synergistic cell cycle arrest mediated by p27 binding to Cyclin E/cdk2 and much greater inhibition of MAPK activity. Gene enrichment analysis showed an increase in the ERB4/MAPK gene set with Fulv alone and the addition of AZD6244 showed that the top 20 gene sets downregulated were all related to replication and cell cycle (ie FOXM1, CyclinE). RPPA confirmed that combination was more effective in decreasing cell cycle promoting proteins (ie FOXM1, Cyclin B1) and upregulating p27. AZD6244 treatment of OVCA lines resulted in differential expression of about ¼ of the breast cancer defined MAPK gene expression signature, and of these, fulvestrant addition to MEK inhibition (MEKi) differentially affected 19 genes, reflective of these being E2 regulated genes. Similarly, of the total MEKi affected genes, a subset were differentially regulated by the addition of fulvestrant indicating putative E2 regulation underlying these genes. Xenograft data showed the greatest decrease in tumor volume with the drug combination compared to either drug alone.
CONCLUSION: Given the majority of primary OVCAs express high MEK/MAPK activity may underlie failure of anti-estrogen therapy. MEK inhibition reverses anti-estrogen resistance in our OVCA models. These data support further pre-clinical and clinical evaluation of combined fulvestrant and MEK inhibition in OVCA.
Citation Format: K. Hew, P. Miller, J. Sun, Z. Wei, G. Zhang, Y. Lu, G. Mills, J. Slingerland, MD, PhD, D. El-Ashry, F. Simpkins. MEK inhibition reverses antiestrogen resistance in ovarian cancer (OVCA) via alteration of cell cycle pathways and MAPK/estrogen regulated gene expression [abstract]. In: Proceedings of the 10th Biennial Ovarian Cancer Research Symposium; Sep 8-9, 2014; Seattle, WA. Philadelphia (PA): AACR; Clin Cancer Res 2015;21(16 Suppl):Abstract nr AS31.
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Affiliation(s)
- K. Hew
- 1Dept. of OB-GYN, University of Miami,
| | - P. Miller
- 2Braman Family Breast Cancer Institute, Sylvester Cancer Center,
| | - J. Sun
- 2Braman Family Breast Cancer Institute, Sylvester Cancer Center,
| | - Z. Wei
- 3Dept. of Computer Science, New Jersey Institute of Technology,
| | | | - Y. Lu
- 5Dept. of Systems Biology MD Anderson Cancer Center,
| | - G. Mills
- 5Dept. of Systems Biology MD Anderson Cancer Center,
| | - J. Slingerland
- 2Braman Family Breast Cancer Institute, Sylvester Cancer Center,
| | - D. El-Ashry
- 2Braman Family Breast Cancer Institute, Sylvester Cancer Center,
| | - F. Simpkins
- 6Department of OB-GYN, University of Pennsylvania
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154
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Jiang Y, Wei Z, Wang Y, Hua X, Feng Y, Yu Y. Tracking a hospital outbreak of KPC-producing ST11 Klebsiella pneumoniae with whole genome sequencing. Clin Microbiol Infect 2015; 21:1001-7. [PMID: 26166545 DOI: 10.1016/j.cmi.2015.07.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 07/02/2015] [Accepted: 07/02/2015] [Indexed: 11/17/2022]
Abstract
An outbreak of carbapenem-resistant Klebsiella pneumoniae strains emerged at a hospital, and was tracked in order to understand the spread of these infectious pathogens. A total of 66 K. pneumoniae strains were collected from sterile samples in 2012. The MICs of 20 antimicrobial agents were determined for all strains. Molecular typing was performed with pulsed-field gel electrophoresis (PFGE). Twelve blaKPC-producing K. pneumoniae strains isolated from ten patients were selected for whole genome sequencing. Phylogenetic reconstruction of these 12 strains was performed by the use of single-nucleotide polymorphism (SNP) row sequences of each draft genome sequence. Plasmids from the 12 strains were separated by S1 digestion and PFGE. The 12 K. pneumoniae strains isolated from the ten patients were deemed to be representative of the hospital outbreak, owing to their similar PFGE patterns. These 12 blaKPC-producing strains conferred multidrug resistance, which contrasted with the remaining 54, more susceptible, strains in the hospital. Differences in SNPs between each draft genome of the blaKPC-producing strains partitioned the 12 outbreak strains into three separate clades. The patients with each clade shared close hospital units. All 12 strains harboured at least one multidrug resistance plasmid. Strains showing high-level resistance may facilitate nosocomial dissemination and result in an infectious pathogen outbreak. Although the 12 blaKPC-producing K. pneumoniae strains possessed similar PFGE patterns, SNP variations throughout the genome allowed the strains to be divided into three clades. These results suggest that three independent transmission events led to hospital-wide dissemination of the outbreak strains.
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Affiliation(s)
- Y Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Hangzhou, Zhejiang, China
| | - Z Wei
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, First Affiliated Hospital, College of Medicine, Hangzhou, Zhejiang, China
| | - Y Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Hangzhou, Zhejiang, China
| | - X Hua
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Hangzhou, Zhejiang, China
| | - Y Feng
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Hangzhou, Zhejiang, China; Translational Medicine Centre, Zhejiang University, Hangzhou, Zhejiang, China
| | - Y Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Hangzhou, Zhejiang, China; State Key Laboratory for Diagnosis and Treatment of Infectious Disease, First Affiliated Hospital, College of Medicine, Hangzhou, Zhejiang, China.
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155
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Wei Z, Gao W, Wu Y, Ni B, Tian Y. Mutual interaction between BCL6 and miRNAs contributing to the pathogenesis of various cancers. Clin Transl Oncol 2015; 17:841-6. [DOI: 10.1007/s12094-015-1322-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 06/05/2015] [Indexed: 12/18/2022]
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156
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Wei Z, Liu M. The effectiveness and safety of tranexamic acid in total hip or knee arthroplasty: a meta-analysis of 2720 cases. Transfus Med 2015; 25:151-62. [DOI: 10.1111/tme.12212] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 11/30/2014] [Accepted: 05/05/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Z. Wei
- Department of Trauma; Union Medicine Centre of Tianjin; Tianjin China
| | - M. Liu
- Department of Trauma; Union Medicine Centre of Tianjin; Tianjin China
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157
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Fang X, Wei Z, Chen R, Tang J, Zhao H, Zhang L, Zhao D, Fang D, Li J, Fang F, Chu X, Wang X. Influence of Exciton Localization on the Emission and Ultraviolet Photoresponse of ZnO/ZnS Core-Shell Nanowires. ACS Appl Mater Interfaces 2015; 7:10331-10336. [PMID: 25918945 DOI: 10.1021/acsami.5b01100] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The structural and optical properties of ZnO and ZnO/ZnS core-shell nanowires grown by a wet chemical method are investigated. The near-bandgap ultraviolet (UV) emission of the ZnO nanowires was enhanced by four times after coating with ZnS. The enhanced emission was attributed to surface passivation of the ZnO nanowires and localized states introduced during ZnS growth. The emission of the ZnO and ZnO/ZnS core-shell nanowires was attributed to neutral donor-bound excitons and localized excitons, respectively. Localized states prevented excitons from diffusing to nonradiative recombination centers, so therefore contributed to the enhanced emission. Emission from the localized exciton was not sensitive to temperature, so emission from the ZnO/ZnS core-shell nanowires was more stable at higher temperature. UV photodetectors based on the ZnO and ZnO/ZnS core-shell nanowires were fabricated. Under UV excitation, the device based on the ZnO/ZnS core-shell nanowires exhibited a photocurrent approximately 40 times higher than that of the device based on the ZnO nanowires. The differing photoresponse of the detectors was consistent with the existence of surface passivation and localized states. This study provides a means for modifying the optical properties of ZnO materials, and demonstrates the potential of ZnO/ZnS core-shell nanowires in UV excitonic emission and detection.
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Affiliation(s)
- Xuan Fang
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Zhipeng Wei
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Rui Chen
- ‡Department of Electrical and Electronic Engineering, South University of Science and Technology of China, Shenzhen, Guangdong 518055, People's Republic of China
| | - Jilong Tang
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Haifeng Zhao
- §Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, People's Republic of China
| | - Ligong Zhang
- §Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, People's Republic of China
| | - Dongxu Zhao
- §Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, People's Republic of China
| | - Dan Fang
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Jinhua Li
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Fang Fang
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Xueying Chu
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Xiaohua Wang
- †State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
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158
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Hew K, Miller P, El-Ashry D, Wei Z, Sun J, Zhang G, Guo W, Brafford P, Mills G, Slingerland J, Simpkins F. The effects of combined MEK inhibition and antiestrogen therapy in the treatment of ovarian cancer. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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159
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Wei Z, Schneider TM, Kim J, Kim HY, Aizenberg J, Mahadevan L. Elastocapillary coalescence of plates and pillars. Proc Math Phys Eng Sci 2015; 471:20140593. [PMID: 25792949 DOI: 10.1098/rspa.2014.0593] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 12/22/2014] [Indexed: 11/12/2022] Open
Abstract
When a fluid-immersed array of supported plates or pillars is dried, evaporation leads to the formation of menisci on the tips of the plates or pillars that bring them together to form complex patterns. Building on prior experimental observations, we use a combination of theory and computation to understand the nature of this instability and its evolution in both the two- and three-dimensional setting of the problem. For the case of plates, we explicitly derive the interaction torques based on the relevant physical parameters associated with pillar deformation, contact-line pinning/depinning and fluid volume changes. A Bloch-wave analysis for our periodic mechanical system captures the window of volumes where the two-plate eigenvalue characterizes the onset of the coalescence instability. We then study the evolution of these binary clusters and their eventual elastic arrest using numerical simulations that account for evaporative dynamics coupled to capillary coalescence. This explains both the formation of hierarchical clusters and the sensitive dependence of the final structures on initial perturbations, as seen in our experiments. We then generalize our analysis to treat the problem of pillar collapse in three dimensions, where the fluid domain is completely connected and the interface is a minimal surface with the uniform mean curvature. Our theory and simulations capture the salient features of experimental observations in a range of different situations and may thus be useful in controlling the ensuing patterns.
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Affiliation(s)
- Z Wei
- School of Engineering and Applied Sciences , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA
| | - T M Schneider
- School of Engineering and Applied Sciences , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA ; Emergent Complexity in Physical Systems Laboratory (ECPS) , École Polytechnique Fédérale de Lausanne , Lausanne 1015, Switzerland
| | - J Kim
- Department of Mechanical and Aerospace Engineering , Seoul National University , Seoul 151-744, Korea
| | - H-Y Kim
- Department of Mechanical and Aerospace Engineering , Seoul National University , Seoul 151-744, Korea
| | - J Aizenberg
- School of Engineering and Applied Sciences , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA ; Kavli Institute for Nano-Bio Science and Technology , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA
| | - L Mahadevan
- School of Engineering and Applied Sciences , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA ; Department of Physics , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA ; Kavli Institute for Nano-Bio Science and Technology , Wyss Institute for Bio-inspired Engineering, Harvard University , Cambridge, MA 02138, USA
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160
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Di Filippo G, Trioni MI, Fratesi G, Schumann FO, Wei Z, Li CH, Behnke L, Patil S, Kirschner J, Stefani G. The LVV Auger line shape of sulfur on copper studied by Auger photoelectron coincidence spectroscopy. J Phys Condens Matter 2015; 27:085003. [PMID: 25650803 DOI: 10.1088/0953-8984/27/8/085003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have studied the line shapes of Cu(0 0 1)-p (2 × 2)S L2VV and L3VV Auger decay by means of Auger photoelectron coincidence spectroscopy. Measuring the LVV Auger spectrum in coincidence with S 2p1/2 and 2p3/2 photoelectrons respectively, we have been able to separate the two overlapping Auger spectra and determine their intrinsic line shapes. The two Auger transitions, though shifted in energy, display an identical line shape whose main features can be qualitatively understood considering a single particle approximation but are better described within a Cini-Sawatzky (CS) approach. Comparison between the experimental and the CS calculated spectra confirms that a substantial part of the Auger lines (∼20%) can be ascribed to decay events accompanied by the excitation of one additional electron-hole pair in the valence band. For the first time, the locality of the Auger process combined with the surface sensitivity of the APECS technique and its ability to separate overlapping structures are used to study Auger transitions taking place at the the surface states of a S/noble-metal interface.
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Affiliation(s)
- G Di Filippo
- Scuola dottorale in Matematica e Fisica, Università di Roma Tre, via della Vasca Navale 84, I-00146 Rome, Italy
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161
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Tian T, Zhao G, Han D, Zhu K, Chen D, Zhang Z, Wei Z, Cao Y, Zhou P. Effects of vitrification cryopreservation on follicular morphology and stress relaxation behaviors of human ovarian tissues: sucrose versus trehalose as the non-permeable protective agent. Hum Reprod 2015; 30:877-83. [DOI: 10.1093/humrep/dev012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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162
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Xu S, Yan Z, Jang KI, Huang W, Fu H, Kim J, Wei Z, Flavin M, McCracken J, Wang R, Badea A, Liu Y, Xiao D, Zhou G, Lee J, Chung HU, Cheng H, Ren W, Banks A, Li X, Paik U, Nuzzo RG, Huang Y, Zhang Y, Rogers JA. Assembly of micro/nanomaterials into complex, three-dimensional architectures by compressive buckling. Science 2015; 347:154-9. [DOI: 10.1126/science.1260960] [Citation(s) in RCA: 615] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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163
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Wei Z, Sandron S, Townsend AT, Nesterenko PN, Paull B. Determination of trace labile copper in environmental waters by magnetic nanoparticle solid phase extraction and high-performance chelation ion chromatography. Talanta 2015; 135:155-62. [PMID: 25640140 DOI: 10.1016/j.talanta.2014.12.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 10/24/2022]
Abstract
Cobalt magnetic nanoparticles surface functionalised with iminodiacetic acid were evaluated as a nano-particulate solid phase extraction absorbent for copper ions (Cu(2+)) from environmental water samples. Using an external magnetic field, the collector nanoparticles could be separated from the aqueous phase, and adsorbed ions simply decomplexed using dilute HNO3. Effects of pH, buffer concentration, sample and sorbent volume, extraction equilibrium time, and interfering ion concentration on extraction efficiency were investigated. Optimal conditions were then applied to the extraction of Cu(2+) ions from natural water samples, prior to their quantitation using high-performance chelation ion chromatography. The limits of detection (LOD) of the combined extraction and chromatographic method were ~0.1 ng ml(-1), based upon a 100-fold preconcentration factor (chromatographic performance; LOD=9.2 ng ml(-1) Cu(2+)), analytical linear range from 20 to 5000 ng mL(-1), and relative standard deviations=4.9% (c=1000 ng ml(-1), n=7). Accuracy and precision of the combined approach was verified using a certified reference standard estuarine water sample (SLEW-2) and comparison of sample determinations with sector field inductively coupled plasma mass spectrometry. Recoveries from the addition of Cu(2+) to impacted estuarine and rain water samples were 103.5% and 108.5%, respectively. Coastal seawater samples, both with and without prior UV irradiation and dissolved organic matter removal were also investigated using the new methodology. The effect of DOM concentration on copper availability was demonstrated.
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Affiliation(s)
- Z Wei
- Department of Environmental Science and Engineering, Nanjing Normal University, Nanjing 210023, PR China; Australian Centre for Research on Separation Sciences (ACROSS), School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart 7001, Tasmania, Australia
| | - S Sandron
- Australian Centre for Research on Separation Sciences (ACROSS), School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart 7001, Tasmania, Australia
| | - A T Townsend
- Central Science laboratory, University of Tasmania, Private Bag 74, Hobart 7001, Tasmania, Australia
| | - P N Nesterenko
- Australian Centre for Research on Separation Sciences (ACROSS), School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart 7001, Tasmania, Australia
| | - B Paull
- Australian Centre for Research on Separation Sciences (ACROSS), School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart 7001, Tasmania, Australia.
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164
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Ye X, Li W, Yang X, Li Y, Huang G, Wang J, Han X, Ni X, Wei Z, Zheng A, Meng M. Microwave ablation as palliative treatment of locally recurrent colorectal cancer. Indian J Cancer 2015; 52 Suppl 2:e61-3. [PMID: 26728676 DOI: 10.4103/0019-509x.172515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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165
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Wei Z, Schumann FO, Li CH, Behnke L, Di Filippo G, Stefani G, Kirschner J. Dynamic screening probed by core-resonant double photoemission from surfaces. Phys Rev Lett 2014; 113:267603. [PMID: 25615385 DOI: 10.1103/physrevlett.113.267603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Indexed: 06/04/2023]
Abstract
The universal response of a sudden created core hole, predicted to occur on an attosecond (10(-18) s) time scale, lacks an experimental demonstration. With a two-dimensional coincidence spectrometer, we demonstrate an extensive energy sharing between the Ag 4p photoelectron and the N2,3VV Auger electron exceeding 10 eV. This energy width provides access to the time scale of the emission process. This is the fingerprint of the dynamic fluctuation process 4p(-1)⇌4d(-2)4f. The shakeup induced interband transitions from the Ag(100) surface are also identified by comparing the coincidence spectrum with the M4,5VV Auger transitions.
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Affiliation(s)
- Z Wei
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
| | - F O Schumann
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
| | - C H Li
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
| | - L Behnke
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
| | - G Di Filippo
- Scuola Dottorale in Matematica e Fisica, Università Roma Tre, via della Vasca Navale 84, 00146 Rome, Italy
| | - G Stefani
- CNISM and Dipartimento di Scienze, Università Roma Tre, via della Vasca Navale 84,00146 Rome, Italy
| | - J Kirschner
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany and Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle, Germany
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166
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Chen W, Wei Z, Ong SH, Machnicki G, Kristijan K. Health Care Utilization and Cost Comparison Between Adherent Hypertension Patients Treated by Single Exforge HCT and Amlodipine/Valsartan/Hydrochlorothiazide Free Combination. Value Health 2014; 17:A723. [PMID: 27202570 DOI: 10.1016/j.jval.2014.08.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- W Chen
- Beijing Novartis Pharma Co. Ltd., Shanghai, China
| | - Z Wei
- Beijing Novartis Pharma Co. Ltd., Shanghai, China
| | - S H Ong
- Novartis Pharma AG, Basel, Switzerland
| | - G Machnicki
- Novartis Argentina SA, Buenos Aires, Argentina
| | - K Kristijan
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
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167
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Tao L, Chandran A, Hirsch LJ, Wei Z, Wang D, Ji L, Sun Z, Qin G, Li Q. Design & Methods For Study Of Prevalence, Risk Factors And Economic Burden Of Insulin Injection-Related Lipohypertrophy In China. Value Health 2014; 17:A741-A742. [PMID: 27202672 DOI: 10.1016/j.jval.2014.08.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | - Z Wei
- BD, Franklin Lakes, NJ, USA
| | - D Wang
- BD, Franklin Lakes, NJ, USA
| | - L Ji
- Peking University People's Hospital, Beijing, China
| | - Z Sun
- Southeast university affiliated zhongda hospital, Nanjing, China
| | - G Qin
- Zhengzhou university first affiliated hospital, Zhengzhou, China
| | - Q Li
- First affiliated hospital of chongqing medical university, Chongqing, China
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168
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Brandt IS, Wei Z, Schumann FO, Kirschner J. Energy relations of positron-electron pairs emitted from surfaces. Phys Rev Lett 2014; 113:107601. [PMID: 25238385 DOI: 10.1103/physrevlett.113.107601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Indexed: 06/03/2023]
Abstract
The impact of a primary positron onto a surface may lead to the emission of a correlated positron-electron pair. By means of a lab-based positron beam we studied this pair emission from various surfaces. We analyzed the energy spectra in a symmetric emission geometry. We found that the available energy is shared in an unequal manner among the partners. On average the positron carries a larger fraction of the available energy. The unequal energy sharing is a consequence of positron and electron being distinguishable particles. We provide a model which explains the experimental findings.
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Affiliation(s)
- I S Brandt
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - Z Wei
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - F O Schumann
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - J Kirschner
- Max-Planck Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany and Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle, Germany
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169
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Wu D, Shi W, Chen J, Wei Z, Chen Z, Zhao D, Lan S, Zhong B, Yu H. Zbh-1205: a Novel Camptothecin Derivate Revealed Potent Antitumor Activities Mainly Through Cell Apoptosis Pathway. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu358.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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170
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Tong B, Wan B, Wei Z, Wang T, Zhao P, Dou Y, Lv Z, Xia Y, Dai Y. Role of cathepsin B in regulating migration and invasion of fibroblast-like synoviocytes into inflamed tissue from patients with rheumatoid arthritis. Clin Exp Immunol 2014; 177:586-97. [PMID: 24749816 PMCID: PMC4137842 DOI: 10.1111/cei.12357] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2014] [Indexed: 12/27/2022] Open
Abstract
Cathepsin B (CB), an important proteinase that participates in joint destruction in rheumatoid arthritis (RA), exhibits higher expression in fibroblast-like synoviocyte (FLS) of abnormal proliferative synovial tissues. Whether and how it affects the biological behaviours of RA-FLS, such as migration and invasion, are poorly understood. In the present study, CB expression in synovial tissues of patients with RA and ostearthritis (OA) were measured by quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC), respectively. Stable depletion of endogenous CB was achieved by small interfering RNA (siRNA) transfection, and decrease of CB activity was acquired by using its specific inhibitor (CA074Me). The effects of CA074Me and RNA interference (RNAi) treatments on proliferation, migration, invasion, matrix metalloproteinase (MMP)-2/-9 expression, focal adhesion kinase (FAK) activation, and mitogen-activated protein kinases (MAPKs) phosphorylation of FLS were analysed. In RA synovial tissues, CB was expressed at elevated levels compared with OA synovial tissues. CA074Me could inhibit invasion of FLS obtained from RA patients in an ex-vivo invasion model. CA074Me and siRNA treatments suppressed the migration and invasion of FLS, reduced the activity, expression and mRNA level of MMP-2, restrained the activation of FAK and reduced the expression of F-actin. Moreover, CA074Me decreased the phosphorylation of P38 MAPK and c-Jun N-terminal kinase (JNK) in FLS, while siCB treatment reduced the phosphorylation of P38 but not JNK. CB substantially contributes to the invasive phenotype of FLS that leads to joint destruction in RA. This proteinase may show promise as a therapeutic target in inflammatory arthritis.
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Affiliation(s)
- B Tong
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
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171
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Shen B, Wang W, Ding L, Sao Y, Huang Y, Shen Z, Zhuo Y, Wei Z, Zhang W. Nuclear factor erythroid 2-related factor 2 rescues the oxidative stress induced by di-N-butylphthalate in testicular Leydig cells. Hum Exp Toxicol 2014; 34:145-52. [PMID: 24917652 DOI: 10.1177/0960327114530744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Aim: This study aimed to determine whether nuclear factor erythroid 2-related factor 2 antagonized the oxidative stress induced by di- N-butylphthalate (DBP) in testicular Leydig cells. Methods: Mouse TM3 testicular Leydig cells were treated with Nrf2 knockdown (KD) or overexpression in the presence and absence of DBP. Oxidative profiles were examined. Nrf2 target antioxidant genes were studied, and the effects of Nrf2 inducer sulphoraphane (SFN) were tested. Results: DBP induced intracellular oxidative stress to a similar extent with Nrf2 KD. Expression and protein levels of Nrf2 were increased together with its target genes, namely heme oxygenase 1, nicotinamide adenine dinucleotide phosphate quinone oxidoreductase 1 and peroxiredoxin 6, following DBP stimulation. Use of SFN not only restored the intracellular oxidative toxicity but also cell proliferation and testosterone secretion in response to DBP. Conclusion: Increased Nrf2 activity, for example, by SFN can effectively antagonize the oxidative stress in testicular Leydig cells caused by DBP.
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Affiliation(s)
- B Shen
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - W Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - L Ding
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - Y Sao
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - Y Huang
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - Z Shen
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - Y Zhuo
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - Z Wei
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
| | - W Zhang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
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172
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Peng ZW, Xu T, He QH, Shi CZ, Wei Z, Miao GD, Jing J, Lim KO, Zuo XN, Chan RCK. Default network connectivity as a vulnerability marker for obsessive compulsive disorder. Psychol Med 2014; 44:1475-1484. [PMID: 24001350 DOI: 10.1017/s0033291713002250] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Aberrant functional connectivity within the default network is generally assumed to be involved in the pathophysiology of obsessive compulsive disorder (OCD); however, the genetic risk of default network connectivity in OCD remains largely unknown. METHOD Here, we systematically investigated default network connectivity in 15 OCD patients, 15 paired unaffected siblings and 28 healthy controls. We sought to examine the profiles of default network connectivity in OCD patients and their siblings, exploring the correlation between abnormal default network connectivity and genetic risk for this population. RESULTS Compared with healthy controls, OCD patients exhibited reduced strength of default network functional connectivity with the posterior cingulate cortex (PCC), and increased functional connectivity in the right inferior frontal lobe, insula, superior parietal cortex and superior temporal cortex, while their unaffected first-degree siblings only showed reduced local connectivity in the PCC. CONCLUSIONS These findings suggest that the disruptions of default network functional connectivity might be associated with family history of OCD. The decreased default network connectivity in both OCD patients and their unaffected siblings may serve as a potential marker of OCD.
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Affiliation(s)
- Z W Peng
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - T Xu
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Q H He
- Guangzhou Psychiatry Hospital, Guangzhou, People's Republic of China
| | - C Z Shi
- Medical Imaging Center, The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Z Wei
- Guangzhou Psychiatry Hospital, Guangzhou, People's Republic of China
| | - G D Miao
- Guangzhou Psychiatry Hospital, Guangzhou, People's Republic of China
| | - J Jing
- Department of Maternal and Child Health, School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - K O Lim
- Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA
| | - X N Zuo
- Key Laboratory of Behavioral Science, Laboratory for Functional Connectome and Development, Institute of Psychology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - R C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, People's Republic of China
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173
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174
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175
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Zhu PP, Zhu ZZ, Hong YL, Zhang K, Huang WX, Yuan QX, Zhao XJ, Ju ZQ, Wu ZY, Wei Z, Wiebe S, Chapman LD. Common characteristics shared by different differential phase contrast imaging methods. Appl Opt 2014; 53:861-867. [PMID: 24663264 DOI: 10.1364/ao.53.000861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
There are many variations of differential phase contrast imaging methods. Although these imaging methods are different in configuration, they are alike in imaging by extracting differential phase information through the evaluation of the refraction angles. In this paper, we investigate common characteristics shared by various different differential phase contrast imaging methods.
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176
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Ma Y, Liu X, Wei Z, Wang X, Wang Z, Zhong W, Li Y, Zhu F, Guo C, Zhang L, Wang X. The expression and significance of TIPE2 in peripheral blood mononuclear cells from asthmatic children. Scand J Immunol 2014; 78:523-8. [PMID: 24107080 DOI: 10.1111/sji.12110] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
Abstract
Tumour necrosis factor-α-induced protein-8 like-2 (TIPE2) is a newly identified immune negative regulator. The abnormal expression of TIPE2 has been found in several human inflammatory diseases. However, the expression level and clinical significance of TIPE2 in childhood asthma remain unclear. In this study, we detected TIPE2 expression in peripheral blood mononuclear cells (PBMC) from 42 children with asthma and 39 healthy controls by RT-PCR, qRT-PCR and Western blot. We also detected the levels of serum total immunoglobulin E (IgE), eosinophil (EO), interleukin-4 (IL-4) and interferon-γ (IFN-γ) and analysed the correlations of TIPE2 expression with IgE, EO, IL-4 and IFN-γ. The results showed that TIPE2 mRNA and protein expression were decreased in children with asthma compared with healthy controls. The levels of IgE, EO and IL-4 in the children with asthma were obviously higher than those in normal controls, while the level of IFN-γ in patients with asthma was significantly lower than that in healthy subjects. Furthermore, the expression level of TIPE2 mRNA was negatively correlated with IgE, EO and IL-4. However, no statistically significant correlation was found between TIPE2 mRNA expression and serum IFN-γ level. In conclusion, our data suggest that reduced TIPE2 expression may contribute to the pathogenesis of childhood asthma.
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Affiliation(s)
- Y Ma
- Institute of Immunology, Shandong University School of Medicine, Jinan, Shandong, China
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177
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Liu W, Tkachov R, Komber H, Senkovskyy V, Schubert M, Wei Z, Facchetti A, Neher D, Kiriy A. Chain-growth polycondensation of perylene diimide-based copolymers: a new route to regio-regular perylene diimide-based acceptors for all-polymer solar cells and n-type transistors. Polym Chem 2014. [DOI: 10.1039/c3py01707a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chain-growth tin-free room temperature polymerization is reported which leads to perylene diimide-based n-type polymers suitable for solar cell and transistor applications.
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Affiliation(s)
- W. Liu
- Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Straße 6
- 01069 Dresden, Germany
| | - R. Tkachov
- Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Straße 6
- 01069 Dresden, Germany
| | - H. Komber
- Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Straße 6
- 01069 Dresden, Germany
| | | | - M. Schubert
- Institute of Physics and Astronomy
- University of Potsdam
- 14476 Potsdam, Germany
| | | | | | - D. Neher
- Institute of Physics and Astronomy
- University of Potsdam
- 14476 Potsdam, Germany
| | - A. Kiriy
- Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Straße 6
- 01069 Dresden, Germany
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178
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Ghanimati S, Spragg S, Campeau J, Brueggmann D, Jaque J, Chen J, Wei Z, Templeman C. Use of Complementary and Alternative Medicine (CAM) Practices among Patients with Pelvic Pain at an Academic Medical Center. J Minim Invasive Gynecol 2013. [DOI: 10.1016/j.jmig.2013.08.548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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179
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Wei Z, Jun S, Hui Z, Quan X, Liu B. NMR metabonomics analysis of helicopter aviators in maritime. ARCH MAL PROF ENVIRO 2013. [DOI: 10.1016/j.admp.2013.07.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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180
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Cardinale CJ, Wei Z, Panossian S, Wang F, Kim CE, Mentch FD, Chiavacci RM, Kachelries KE, Pandey R, Grant SFA, Baldassano RN, Hakonarson H. Targeted resequencing identifies defective variants of decoy receptor 3 in pediatric-onset inflammatory bowel disease. Genes Immun 2013; 14:447-52. [DOI: 10.1038/gene.2013.43] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 07/19/2013] [Indexed: 12/14/2022]
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181
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Wei Z, Yang M, Quan B, Wang Y, Wu Y, Ji B. Prevalence of latent tuberculosis infection among healthcare workers in China as detected by two interferon-gamma release assays. J Hosp Infect 2013; 84:323-5. [PMID: 23806839 DOI: 10.1016/j.jhin.2013.04.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 04/28/2013] [Indexed: 10/26/2022]
Abstract
Healthcare workers in China have a high risk of tuberculosis infection. This study measured the prevalence of latent tuberculosis infection in 210 healthcare workers in a chest hospital in Harbin using two interferon-gamma release assays (IGRAs) [QuantiFERON(®)-TB Gold In-Tube (QFT-GIT) and A.TB] and the tuberculin skin test. Results from the IGRAs had moderate agreement with positivity rates of 76.5% (QFT-GIT) and 65.7% (A.TB) but <50% of subjects returned for tuberculin skin test readings. Risk of infection increased with patient exposure. IGRAs may be more useful than tuberculin skin test in monitoring tuberculosis infections in high risk environments.
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Affiliation(s)
- Z Wei
- Vaccine Laboratory, Nankai University, Tianjin, China
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182
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Yang D, Zhu Z, Wang W, Shen P, Wei Z, Wang C, Cai Q. Expression profiles analysis of pancreatic cancer. Eur Rev Med Pharmacol Sci 2013; 17:311-317. [PMID: 23426533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND [Corrected] Pancreatic cancer is the fourth most common cause of cancer-related deaths across the globe and has a poor prognosis. AIM To investigate the characteristics of genomic expression profiles of pancreatic cancer and screen differentially expressed genes. MATERIALS AND METHODS Using GSE16515 dataset downloaded from GEO (Gene Expression Omnibus) database, we first screened the differentially expressed genes (DEGs) in pancreatic cancer by packages in R language. The key functions of DEGs were investigated by GO (Gene Ontology) and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway enrichment analysis. The potential functionally important SNP (Single Nucleotide Polymorphism) was selected from the dbSNP database. RESULTS A total of 1270 DEGs were identified. Most of them were predicted to be involved in pancreatic cancer development by sequence variant. Six genes (CDC42, STAT1, RALA, BCL2L1, TGFA, and EGF) were enriched in the known pancreatic cancer pathway. All these six genes had SNP, usually mutation at A/G and C/T point. CONCLUSIONS Our results provide some underlying biomarkers for early diagnosis of pancreatic cancer.
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Affiliation(s)
- D Yang
- Department of Gastrointestinal Surgery, Shanghai Changzheng Hospital affiliated to the Second Military Medical University, Shanghai, China
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183
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Wei W, Ji A, Wang J, Wei Z, Lian C, Yang J, Ma L, Ma L, Qin X, Wang LD. Functional single nucleotide polymorphism in C20orf54 modifies susceptibility to esophageal squamous cell carcinoma. Dis Esophagus 2013; 26:97-103. [PMID: 22533825 DOI: 10.1111/j.1442-2050.2012.01339.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of this study was to explore the association of C20orf54 functional single nucleotide polymorphism (SNP) with the susceptibility to esophageal squamous cell carcinoma (ESCC) in a northern China population. The C20orf54 SNP was genotyped by direct sequencing in 240 cancer patients and 198 controls in northern China. The results showed that drinking status, family history of ESCC, and body mass index have great influence on the risk of developing ESCC. The overall genotype frequencies of C20orf54 in ESCC patients have a significant difference with healthy controls (χ(2) = 8.06, P = 0.018). By using C/C genotype as the reference, the C/T genotype showed a significantly decreased risk to the development of ESCC. Thus, compared with the C/C genotype, smokers, drinkers with C/T genotype significantly decreased the risk of developing ESCC. A positive family history of ESCC with C/T and T/T genotype both increased the risk of developing ESCC. Body mass index between 18.5 and 24 with C/T genotype significantly decreased the risk of developing ESCC. The present study suggests that the C20orf54 functional SNP might be associated with a risk of development in ESCC.
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Affiliation(s)
- W Wei
- Central Laboratory, Heping Hospital-Changzhi Medical College, 161 Jie Fang Dong Street, Changzhi, Shanxi Province, China
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184
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Gao Y, Cheng L, Su G, Wei Z, Li G. 55 STUDY ON THE INTERSPECIFIC NUCLEAR TRANSFER OF PRZEWALSKI'S GAZELLES AND BOVINES. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Przewalski’s gazelle (Procapra przewalskii), also known as Platts antelope, is an endangered species only found in China. It belongs to the Artiodactyla order, Bovidae family, antelope subfamily, and Gazella genus. In this study, 5 experiments were designed to examine the developmental potential of Przewalski’s gazelle somatic cells transplanted into bovine enucleated oocytes. Enucleation was conducted by Hoechst 33342 staining of the oocytes and guided by a fluorescent microscope to ensure the removal of the nuclei. The gazelle cells were then transferred to the enucleated oocytes and electrically fused to reconstructed embryos. The study resulted in 5 major findings. (1) When gazelle-bovine reconstructed embryos were treated with the deacetylase inhibitor valproic acid (VPA), at different concentrations and for different times, treatment of the cloned embryos with VPA at 0.5 mM for 24 h significantly increased the 8- to 16-cell-stage embryo development [61.9% (96/155) v. 33.8% (46/136) control]. However, the morula [1.3% (2/155) v. 1.5% (2/155); P > 0.05] and blastocyst (0.7% v. 1.5%; P > 0.05) development were similar to that of the control. In the intraspecific (bovine-bovine) control group, the cleavage, morula and blastocyst development of 3 cloned embryos were 72.6% (127/175), 28.0% (49/175), and 23.4% (41/175). (2) Octamer-binding transcription factor 4 (Oct-4), as a developmental potential and expression marker, was transfected to gazelle cells. When Oct-4-eGFP-confected cells were transferred, the cloned embryo development did not improve either with or without VPA treatment. (3) When the gazelle-bovine embryos were treated with the deacetylase inhibitor trichostatin A (TSA) for 24 h at 10 ng mL–1, blastocyst development was significantly higher than in the control group [3.6% (6/168) v. 0.8% (1/125); P < 0.05]. (4) When a reverse NT protocol, in which the oocyte nucleus was removed after the cell nucleus was fused to the oocyte, was used for NT, the cloned embryo development did not improve. (5) The gazelle-bovine and bovine-bovine cloned embryos at 8- to 16-cell stages, gazelle cells, bovine cells, and bovine oocytes transcriptomes were analyzed by Affymetrix microarray (Affymetrix Microarray Inc., Santa Clara, CA, USA) and repeated twice. A total of 643 genes were activated in gazelle-cattle embryos compared with oocytes, whereas 1527 genes were activated in bovine-bovine clones. A total of 1010 genes that were exclusively expressed in gazelle somatic cells were still expressed in the interspecies cloned embryos. In conclusion, TSA treatment of Przewalski’s gazelle somatic cells transferred into enucleated bovine oocytes improved development of cloned embryos to the blastocyst stage, although still with low efficiency. Data from microarray analyses of the gazelle-cattle embryos showed that over 1000 gazelle-specific genes were still expressed in the interspecific cloned embryos.
This work was supported by the National Basic Research Program of China (no. 2012CB22306).
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185
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Wang B, Wei Z, Li M, Liu G, Zou Y, Xing G, Tan TT, Li S, Chu X, Fang F, Fang X, Li J, Wang X, Ma X. Tailoring the photoluminescence characteristics of p-type GaSb: The role of surface chemical passivation. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2012.11.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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186
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Bai L, Li X, Liu Y, Wei Z, Li G. 45 EFFECT OF DEACETYLASE INHIBITOR VALPROIC ACID ON BOVINE CULTURED SOMATIC CELLS. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Normal development depends on a precise sequence of changes in the configuration of chromatin. Epigenetic modifications, such as histone acetylation and methylation and DNA methylation, control the precise tissue-specific gene expressions. Valproic acid (VPA) is an aliphatic acid compound and a deacetylase inhibitor that influences cellular proliferation, differentiation, apoptosis, and migration. Several studies have shown that treatment of fused, cloned embryos with VPA improved embryo development. However, whether the treatment of donor cells with VPA affected cloned embryo development was not clear. In the present study, bovine fibroblast cells were treated with VPA at 0, 0.25, 0.5, 1.0, 2.0, and 4.0 mM concentrations for 24 and 48 h, respectively. The cell growth, cell cycle, diploid composition, and histone modifications were examined. The results showed that (1) when the cells were treated with VPA at and over 2.0 mM concentrations for 24 or 48 h, cell growth was significantly inhibited; (2) VPA treatment resulted in a decrease in cell diploid composition; (3) VPA induced the arrestment of cells at the G0/G1 stages; (4) VPA treatment increased early cell apoptosis; (5) VPA at a 4.0 mM concentration and treatment of cells for 24 h improved H3K9 acetylation; however, treatment of cells with VPA decreased H3K9 methylation in all experimental groups; and (6) when the cells treated with VPA at 0, 0.25, 0.5, 1.0, and 2.0 mM concentrations for 24 h were used as donor cells for NT, the cleavage rates were 83.2, 80.0, 82.1, 80.5, and 65.5%, respectively, and the percentages of blastocyst development were 30.5, 29.6, 29.2, 25.0, and 15.5%, respectively. When the cells were treated with VPA at 4.0 mM concentration, the cleavage (65.5%, 76/116) and blastocyst development (15.5%, 18/116) significantly decreased as compared with the control [83.2% (158/190) and 30.5% (58/190), respectively]. The cell numbers of the blastocysts derived from VPA treatment at 0, 0.25, 0.5, 1.0, and 2.0 mM concentrations were 89.6, 88.6, 87.6, 75.0, and 71.3, respectively, which decreased with the increase in VPA concentration. In conclusion, VPA affected cell growth and histone modifications in a concentration-dependent manner. The VPA-treated cells did not improve the cloned embryo development and even decreased blastocyst when VPA was at a high concentration.
This work was supported by the National Basic Research Program of China (no. 2012CB22306).
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Pellegrino R, Sunaga DY, Guindalini C, Martins RCS, Mazzotti DR, Wei Z, Daye ZJ, Andersen ML, Tufik S. Whole blood genome-wide gene expression profile in males after prolonged wakefulness and sleep recovery. Physiol Genomics 2012; 44:1003-12. [DOI: 10.1152/physiolgenomics.00058.2012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Although the specific functions of sleep have not been completely elucidated, the literature has suggested that sleep is essential for proper homeostasis. Sleep loss is associated with changes in behavioral, neurochemical, cellular, and metabolic function as well as impaired immune response. Using high-resolution microarrays we evaluated the gene expression profiles of healthy male volunteers who underwent 60 h of prolonged wakefulness (PW) followed by 12 h of sleep recovery (SR). Peripheral whole blood was collected at 8 am in the morning before the initiation of PW (Baseline), after the second night of PW, and one night after SR. We identified over 500 genes that were differentially expressed. Notably, these genes were related to DNA damage and repair and stress response, as well as diverse immune system responses, such as natural killer pathways including killer cell lectin-like receptors family, as well as granzymes and T-cell receptors, which play important roles in host defense. These results support the idea that sleep loss can lead to alterations in molecular processes that result in perturbation of cellular immunity, induction of inflammatory responses, and homeostatic imbalance. Moreover, expression of multiple genes was downregulated following PW and upregulated after SR compared with PW, suggesting an attempt of the body to re-establish internal homeostasis. In silico validation of alterations in the expression of CETN3, DNAJC, and CEACAM genes confirmed previous findings related to the molecular effects of sleep deprivation. Thus, the present findings confirm that the effects of sleep loss are not restricted to the brain and can occur intensely in peripheral tissues.
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Affiliation(s)
- R. Pellegrino
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - D. Y. Sunaga
- Human Genome Research Center, Biosciences Institute of University of Sao Paulo, São Paulo, Brazil
| | - C. Guindalini
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - R. C. S. Martins
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - D. R. Mazzotti
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Z. Wei
- Department of Computer Science, New Jersey Institute of Technology, Newark, New Jersey; and
| | - Z. J. Daye
- Department of Biostatistics and Epidemiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - M. L. Andersen
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - S. Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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188
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Yang FH, Zhang B, Zhou DJ, Bie L, Tom MW, Drummond DC, Nicolaides T, Mueller S, Banerjee A, Park JW, Prados MD, James DC, Gupta N, Hashizume R, Strohbehn GW, Zhou J, Fu M, Patel TR, Piepmeier JM, Saltzman WM, Xie Q, Johnson J, Bradley R, Ascierto ML, Kang L, Koeman J, Marincola FM, Briggs M, Tanner K, Vande Woude GF, Tanaka S, Klofas LK, Wakimoto H, Borger DR, Iafrate AJ, Batchelor TT, Chi AS, Madhankumar AB, Slagle-Webb B, Rizk E, Harbaugh K, Connor JR, Sarkar G, Curran GL, Jenkins RB, Kurozumi K, Ichikawa T, Onishi M, Fujii K, Ishida J, Shimazu Y, Date I, Ebsworth K, Walters MJ, Ertl LS, Wang Y, Berahovich RD, Zhang P, Powers JP, Liu SC, Al Omran R, Sullivan TJ, Jaen JC, Brown M, Schall TJ, Yusuke N, Shimizu S, Shishido-Hara Y, Shiokawa Y, Nagane M, Wang J, Sai K, Chen FR, Chen ZP, Shi Z, Zhang J, Zhang K, Han L, Chen L, Qian X, Zhang A, Wang G, Jia Z, Pu P, Kang C, Kong LY, Doucette TA, Ferguson SD, Hachem J, Yang Y, Wei J, Priebe W, Fuller GN, Qiao W, Rao G, Heimberger AB, Chen PY, Ozawa T, Drummond D, Santos R, Torre JD, Ng C, Lepe EL, Butowski N, Prados M, Bankiewicz K, James CD, Cheng Z, Gong Y, Ma Y, Muller-Knapp S, Knapp S, Wang J, Fujii K, Kurozumi K, Ichikawa T, Onishi M, Shimazu Y, Ishida J, Antonio Chiocca E, Kaur B, Date I, Yu JS, Judkowski V, Bunying A, Ji J, Li Z, Bender J, Pinilla C, Srinivasan V, Dombovy-Johnson M, Carson-Walter E, Walter K, Xu Z, Popp B, Schlesinger D, Gray L, Sheehan J, Keir ST, Friedman HS, Bigner DD, Kut C, Tyler B, McVeigh E, Li X, Herzka D, Grossman S, Lasky JL, Wang Y, Panosyan E, Meisen WH, Hardcastle J, Wojton J, Wohleb E, Alvarez-Breckenridge C, Nowicki M, Godbout J, Kaur B, Lee SY, Slagle-Webb B, Sheehan JM, Connor JR, Yin S, Kaluz S, Devi SN, de Noronha R, Nicolaou KC, Van Meir EG, Lachowicz JE, Demeule M, Che C, Tripathy S, Jarvis S, Currie JC, Regina A, Nguyen T, Castaigne JP, Zielinska-Chomej K, Mohanty C, Viktorsson K, Lewensohn R, Driscoll JJ, Alsidawi S, Warnick RE, Rixe O, deCarvalho AC, Irtenkauf S, Hasselbach L, Xin H, Mikkelsen T, Sherman JH, Siu A, Volotskova O, Keidar M, Gibo DM, Dickinson P, Robertson J, Rossmeisl J, Debinski W, Nair S, Schmittling R, Boczkowski D, Archer G, Bigner DD, Sampson JH, Mitchell DA, Miller IS, Didier S, Murray DW, Issaivanan M, Coniglio SJ, Segall JE, Al-Abed Y, Symons M, Fotovati A, Hu K, Wakimoto H, Triscott J, Bacha J, Brown DM, Dunn SE, Daniels DJ, Peterson TE, Dietz AB, Knutson GJ, Parney IF, Diaz RJ, Golbourn B, Picard D, Smith C, Huang A, Rutka J, Saito N, Fu J, Yao J, Wang S, Koul D, Yung WKA, Fu J, Koul D, Yao J, Wang S, Yuan Y, Sulman EP, Colman H, Lang FF, Yung WKA, Slat EA, Herzog ED, Rubin JB, Brown M, Carminucci AS, Amendolara B, Leung R, Lei L, Canoll P, Bruce JN, Wojton JA, Chu Z, Kwon CH, Chow LM, Palascak M, Franco R, Bourdeau T, Thornton S, Qi X, Kaur B, Kitange GJ, Mladek AC, Su D, Carlson BL, Schroeder MA, Pokorny JL, Bakken KK, Gupta SK, Decker PA, Wu W, Sarkaria JN, Colman H, Oddou MP, Mollard A, Call LT, Vakayalapati H, Warner SL, Sharma S, Bearss DJ, Chen TC, Cho H, Wang W, Hofman FM, Flores CT, Snyder D, Sanchez-Perez L, Pham C, Friedman H, Bigner DD, Sampson JH, Mitchell DA, Woolf E, Abdelwahab MG, Turner G, Preul MC, Lynch A, Rho JM, Scheck AC, Salphati L, Heffron TP, Alicke B, Barck K, Carano RA, Cheong J, Greve J, Lee LB, Nishimura M, Pang J, Plise EG, Reslan HB, Zhang X, GOuld SG, Olivero AG, Phillips HS, Zadeh G, Jalali S, Voce D, Wei Z, Shijun K, Nikolai K, Josh W, Clayton C, Bakhtiar Y, Alkins R, Burgess A, Ganguly M, Wels W, Hynynen K, Li YM, Jun H, Daniel V, Walter HA, Nakashima H, Nguyen TT, Shalkh I, Goins WF, Chiocca EA, Pyko IV, Nakada M, Furuyama N, Lei T, Hayashi Y, Kawakami K, Minamoto T, Fedulau AS, Hamada JI. LAB-EXPERIMENTAL (PRE-CLINICAL) THERAPEUTICS AND PHARMACOLOGY. Neuro Oncol 2012; 14:vi25-vi37. [PMCID: PMC3488776 DOI: 10.1093/neuonc/nos222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023] Open
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189
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Hu H, Nau M, Ehrenberg P, Chenine A, Daye Z, Wei Z, Michael N, Vahey M, Kim J, Marovich M, Ratto-Kim S. Distinct gene expression profiles associated with the susceptibility of pathogen-specific CD4+ T cells to HIV-1 infection. Retrovirology 2012. [PMCID: PMC3441412 DOI: 10.1186/1742-4690-9-s2-o46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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190
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191
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Zhou B, Meng QX, Ren LP, Shi FH, Wei Z, Zhou ZM. Evaluation of chemical composition, in situ degradability and in vitro gas production of ensiled and sun-dried mulberry pomace. J Anim Feed Sci 2012. [DOI: 10.22358/jafs/66063/2012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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192
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Sullivan TJ, Dairaghi DJ, Krasinski A, Miao Z, Wang Y, Zhao BN, Baumgart T, Berahovich R, Ertl LS, Pennell A, Seitz L, Miao S, Ungashe S, Wei Z, Johnson D, Boring L, Tsou CL, Charo IF, Bekker P, Schall TJ, Jaen JC. Characterization of CCX140-B, an orally bioavailable antagonist of the CCR2 chemokine receptor, for the treatment of type 2 diabetes and associated complications. ACTA ACUST UNITED AC 2012:jpet.111.190918. [DOI: 10.1124/jpet.111.190918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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193
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194
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Meng Y, Wei Z, Lu YL, Zhang LQ. Structure, morphology, and mechanical properties of polysiloxane elastomer composites prepared by in situ polymerization of zinc dimethacrylate. EXPRESS POLYM LETT 2012. [DOI: 10.3144/expresspolymlett.2012.94] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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195
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Xinzhou H, Ning Y, Ou W, Xiaodan L, Fumin Y, Huitu L, Wei Z. RKIP inhibits the migration and invasion of human prostate cancer PC-3M cells through regulation of extracellular matrix. Mol Biol 2011. [DOI: 10.1134/s0026893311060197] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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196
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Xinzhou H, Ning Y, Ou W, Xiaodan L, Fumin Y, Huitu L, Wei Z. RKIp inhibits the migration and invasion of human prostate cancer PC-3M cells through regulation of extracellular matrix. Mol Biol (Mosk) 2011; 45:1004-1011. [PMID: 22295570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raf kinase inhibitor protein (RKIP) plays a pivotal role in several intracellular signaling cascades and has been implicated as a metastasis suppressor in multiple cancer cells including prostate cancer cells, but the mechanism is not very clear. In this study, we investigated the effect of RKIP on cell proliferation, migration and invasion using human prostate cancer PC-3M cells as a model system. Our results indicate that RKIP does not effect cell proliferation in PC-3M cells, but inhibits both cell migration and cell invasion. In association with this inhibitory effect, RKIP down-regulates matrix metalloproteinases (MMP-2 and MMP-9), cathepsin B and urinary plasminogen activator (uPA). Also RKIP has the ability to regulate the expression of E-cadherin. But ectopic expression of RKIP does not affect the level of the Snail protein. As it has been indicated here, RKIP inhibits the migration and invasion ability of human prostate cancer cells through regulation of the extracellular matrix. These findings provide new mechanistic insight how RKIP suppresses metastasis in vitro.
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Affiliation(s)
- H Xinzhou
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, 100875
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197
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Hong Z, Yan X, Jia X, Ruibin C, Wei Z, Zi Y. Training effectiveness improvements of cardiopulmonary resuscitation skills based on 2010 CPR guideline in emergency medicine. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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198
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Lvdan, Wei Z, Baodan, Xiongzhi F, Huang L, Lianfeng Z. Downregulation of CYP2E1 ameliorates oxidative stress and apoptosis. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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199
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Hong Z, Yan X, Jia X, Ruibin C, Wei Z, Zi Y. Assess improvements in effectiveness of cardiopulmonary resuscitation skills based on 2010 CPR guidelines. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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200
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Dan L, Wei Z, Dan B, Xiongzhi Q, Lan H, Lianfeng Z. Downregulation of the CYP2E1 ameliorates oxidative stress and apoptosis. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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