201
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Bu D, Li S, Yu Z, Gao S, Ma L, Zhou X, Wang J. 1617 Effect of dietary energy source and level on rumen bacteria community in lactating dairy cows. J Anim Sci 2016. [DOI: 10.2527/jam2016-1617] [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: 11/13/2022] Open
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202
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Li N, Tian Y, Jin J, Li Y, Tang Y, Liu W, Wang W, Wang S, Liu Y, Liu X, Yu Z, Dai J. A Customized Tissue Compensator With 3-Dimensional Print Technique for Chest Wall Electron Irradiation. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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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203
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Talebizadeh N, Yu Z, Kronschläger M, Galichanin K, Söderberg P. Evidence for apoptosis in the lens after in vivo
exposure to ultraviolet radiation. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0126] [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: 11/28/2022]
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204
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Soderberg P, Yu Z, Talebizadeh N, Malmqist L, Sandberg Melin C, Galichanin K. Ambient exposure of the ocular tissues to optical radiation. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0707] [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: 11/27/2022]
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205
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Galichanin K, Yu Z, Talebizadeh N, Burmakin M, Söderberg P. Exposure to subthreshold dose of UVR-B induces apoptosis in the lens epithelial cells and does not in the lens fiber cells. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0288] [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: 11/29/2022]
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206
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Yu Z, Schulmeister K, Talebizadeh N, Kronschläger M, Söderberg P. Is the increasing exposure of the eye to near-infrared radiation from remote controls and sensing a threat to the lens? Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0040] [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: 11/30/2022]
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207
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Zhou Z, Huifeng H, Reiter R, Yu Z. Melatonin antagonizes cadmium-induced neurotoxicity by activating the transcription factor EB-dependent autophagy-lysosome machinery. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1889] [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: 11/28/2022]
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208
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Hammond K, Crompton L, Bannink A, Dijkstra J, Yáñez-Ruiz D, O’Kiely P, Kebreab E, Eugène M, Yu Z, Shingfield K, Schwarm A, Hristov A, Reynolds C. Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.05.018] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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209
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Zheng Y, Zhang R, Yu Z, Li N. P7007 Targeted IGF1 promoter modification in mice using small intestine-specific regulatory element binding sites. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4179x] [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: 11/13/2022] Open
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210
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Tan S, Wu G, Yu C, Zhuang Q, Xi Q, Meng Q, Jiang Y, Han Y, Yu Z, Li N. OR38: High-Fat Enteral Nutrition Improves Intestinal Muscularis Energy Metabolism for Postoperative Ileus. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30277-1] [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: 11/26/2022]
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211
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Tan S, Yu C, Wu G, Zhuang Q, Xi Q, Meng Q, Jiang Y, Han Y, Yu W, Yu Z, Li N. MON-P242: Early Enteral Nutrition for Patients After Pancreaticoduodenectomy, A Meta-Analysis Of Randomized Controlled Trials. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30876-7] [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: 11/17/2022]
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212
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Gu Z, Fang W, Shen Y, Wei Y, Chen K, Yu Z, Tan L, Fu J, Pang L, Li Y, Han Y, Wang Y, Zhang P, Zhou X, Liu Y, Liu Y, Chen C, Zhang R, Cui Y, Chen H. F-121LYMPH NODAL METASTASES IN THYMIC MALIGNANCIES: A CHINESE ALLIANCE FOR RESEARCH OF THYMOMAS RETROSPECTIVE DATABASE ANALYSIS. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.119] [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: 11/13/2022] Open
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213
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Yu Z, Kotake Y, Janzen EG. Structural dependence of nitroxide spin labels and nitroxide spin adducts on their reducibility by ascorbate ion. Redox Rep 2016; 2:133-9. [DOI: 10.1080/13510002.1996.11747040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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214
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Yáñez-Ruiz D, Bannink A, Dijkstra J, Kebreab E, Morgavi D, O’Kiely P, Reynolds C, Schwarm A, Shingfield K, Yu Z, Hristov A. Design, implementation and interpretation of in vitro batch culture experiments to assess enteric methane mitigation in ruminants—a review. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.03.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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215
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Ge X, Cao Z, Gu Y, Wang F, Li J, Han M, Xia W, Yu Z, Lyu P. PFKFB3 potentially contributes to paclitaxel resistance in breast cancer cells through TLR4 activation by stimulating lactate production. Cell Mol Biol (Noisy-le-grand) 2016; 62:119-125. [PMID: 27262815] [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] [Received: 02/26/2016] [Accepted: 05/24/2016] [Indexed: 06/05/2023]
Abstract
Paclitaxel is a commonly used agent for breast cancer therapy, which comes across the obstacle "drug resistance", resulting in shortened overall survival of patients. Warburg effect has become one character of cancer cell and was reported to induce paclitaxel resistance, the mechanism of which is poorly understood. In this study, we sought to examine the role of 6-Phosphofructo-2-kinase (PFKFB3), a critical regulator of glycolysis, in paclitaxel resistance development. Two clones of paclitaxel resistant breast cancer cells, MCF-7RA and MCF-7RB, were established by a long term exposure of MCF-7 cells to paclitaxel. Consequently, PFKFB3 expression was found to be increased in MCF-7RA and MCF-7RB cells compared with MCF-7 cells. Silencing PFKFB3 expression markedly reduced the IC50 concentrations of MCF-7RA and MCF-7RB cells. Moreover, PFKFB3 modulated toll like receptor 4 (TLR4) and MyD88 expression as well as interleukin (IL)-6 and IL-8 release from breast cancer cells in response to paclitaxel exposure. In addition, PFKFB3 overexpression boosted up fructose-2,6-bisphosphate (F2,6BP) and lactate production. The enhanced lactate contributed to TLR4 signaling activation, IL-6 and IL-8 generation, and cell viability promotion in MCF-7 cells. In all, we characterized the novel role of PFKFB3 in induction of paclitaxel resistance by raising lactate production and activating TLR4 signaling.
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Affiliation(s)
- X Ge
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - Z Cao
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - Y Gu
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - F Wang
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - J Li
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - M Han
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
| | - W Xia
- The First Affiliated Hospital of Zhengzhou University Department of Magnetic Resonance Imaging Zhengzhou China
| | - Z Yu
- The First Affiliated Hospital of Zhengzhou University Department of Radiology Zhengzhou China
| | - P Lyu
- The First Affiliated Hospital of Zhengzhou University Department of Breast Surgery Zhengzhou China
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216
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Yuan S, Yu Z, Liu Q, Zhang M, Xiang Y, Wu N, Wu L, Hu Z, Xu B, Cai T, Ma X, Zhang Y, Liao C, Wang L, Yang P, Bai L, Li Y. GPC5, a novel epigenetically silenced tumor suppressor, inhibits tumor growth by suppressing Wnt/β-catenin signaling in lung adenocarcinoma. Oncogene 2016; 35:6120-6131. [DOI: 10.1038/onc.2016.149] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 03/19/2016] [Accepted: 03/25/2016] [Indexed: 02/06/2023]
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217
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Abstract
Mutations in the Wilms' tumor gene, WT1, can lead to syndromic steroid-resistant nephrotic syndrome and isolated steroid-resistant nephrotic syndrome. WT1 mutations have been identified in the majority of children with Denys-Drash or Frasier syndrome. WT1 mutations have not previously been identified in boys with sporadic isolated steroid-resistant nephrotic syndrome, but, recently, four boys with isolated nephrotic syndrome were identified to have WT1 mutations. However, whether boys with sporadic isolated steroid-resistant nephrotic syndrome should be routinely subjected to mutation analysis of WT1 has not been established. We examined 35 boys with sporadic isolated steroid-resistant nephrotic syndrome for mutations in WT1. Mutation analysis of all 10 exons of WT1 was performed by polymerase chain reaction and direct sequencing. Karyotype analysis or Y chromosome identification was performed for all patients. A Y chromosome or a 46, XY karyotype was demonstrated for all 35 patients. No causative WT1 mutation was identified in any of the patients. The WT1 mutation, IVS4+14T>C, which is not predicted to affect splicing, was identified in one patient who achieved complete remission after 8 weeks of oral prednisone treatment, indicating that IVS4+14T>C is not a causative mutation. Five WT1 polymorphisms were also identified in some patients and controls. Our results suggest that mutation analysis of WT1 should not be routinely performed for genetically defined boys with sporadic isolated steroid-resistant nephrotic syndrome.
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Affiliation(s)
- Y Yang
- Department of Pediatrics, Fuzhou Dongfang Hospital, Fuzhou, Fujian, China.,Department of Pediatrics, Fuzhou Clinical Medical College, Fujian Medical University, Fuzhou, Fujian, China.,Department of Pediatrics, Affiliated Dongfang Hospital, Xiamen University, Fuzhou Fujian, China
| | - F Zhao
- Department of Pediatrics, Fuzhou Dongfang Hospital, Fuzhou, Fujian, China.,Department of Pediatrics, Fuzhou Clinical Medical College, Fujian Medical University, Fuzhou, Fujian, China.,Department of Pediatrics, Affiliated Dongfang Hospital, Xiamen University, Fuzhou Fujian, China
| | - X Tu
- Research Center for Molecular Diagnosis of Genetic Diseases, Fuzhou Dongfang Hospital, Fuzhou, Fujian, China
| | - Z Yu
- Department of Pediatrics, Fuzhou Dongfang Hospital, Fuzhou, Fujian, China.,Department of Pediatrics, Fuzhou Clinical Medical College, Fujian Medical University, Fuzhou, Fujian, China.,Department of Pediatrics, Affiliated Dongfang Hospital, Xiamen University, Fuzhou Fujian, China
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218
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Leng S, Yu Z, Halaweish A, Kappler S, Hahn K, Henning A, Li Z, Lane J, Levin DL, Jorgensen S, Ritman E, McCollough C. A High-Resolution Imaging Technique using a Whole-body, Research Photon Counting Detector CT System. Proc SPIE Int Soc Opt Eng 2016; 9783. [PMID: 27330238 DOI: 10.1117/12.2217180] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
A high-resolution (HR) data collection mode has been introduced to the whole-body, research photon-counting-detector CT system installed in our laboratory. In this mode, 64 rows of 0.45 mm × 0.45 mm detectors pixels were used, which corresponded to a pixel size of 0.225 mm × 0.225 mm at the iso-center. Spatial resolution of this HR mode was quantified by measuring the MTF from a scan of a 50 micron wire phantom. An anthropomorphic lung phantom, cadaveric swine lung, temporal bone and heart specimens were scanned using the HR mode, and image quality was subjectively assessed by two experienced radiologists. Comparison of the HR mode images against their energy integrating system (EID) equivalents using comb filters was also performed. High spatial resolution of the HR mode was evidenced by the MTF measurement, with 15 lp/cm and 20 lp/cm at 10% and 2% MTF. Images from anthropomorphic phantom and cadaveric specimens showed clear delineation of small structures, such as lung vessels, lung nodules, temporal bone structures, and coronary arteries. Temporal bone images showed critical anatomy (i.e. stapes superstructure) that was clearly visible in the PCD system but hardly visible with the EID system. These results demonstrated the potential application of this imaging mode in lung, temporal bone, and vascular imaging. Other clinical applications that require high spatial resolution, such as musculoskeletal imaging, may also benefit from this high resolution mode.
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Affiliation(s)
- S Leng
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - Z Yu
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | | | - S Kappler
- Siemens Healthcare, Forchheim, Germany
| | - K Hahn
- Siemens Healthcare, Forchheim, Germany
| | - A Henning
- Siemens Healthcare, Forchheim, Germany
| | - Z Li
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - J Lane
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - D L Levin
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - S Jorgensen
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - E Ritman
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
| | - C McCollough
- Department of Radiology, Mayo Clinic, Rochester, MN, 55901
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219
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Söderberg PG, Talebizadeh N, Yu Z, Galichanin K. Does infrared or ultraviolet light damage the lens? Eye (Lond) 2016; 30:241-6. [PMID: 26768915 PMCID: PMC4763141 DOI: 10.1038/eye.2015.266] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/18/2015] [Indexed: 11/09/2022] Open
Abstract
In daylight, the human eye is exposed to long wavelength ultraviolet radiation (UVR), visible radiation and short wavelength infrared radiation (IRR). Almost all the UVR and a fraction of the IRR waveband, respectively, left over after attenuation in the cornea, is absorbed in the lens. The time delay between exposure and onset of biological response in the lens varies from immediate-to-short-to-late. After exposure to sunlight or artificial sources, generating irradiances of the same order of magnitude or slightly higher, biological damage may occur photochemically or thermally. Epidemiological studies suggest a dose-dependent association between short wavelength UVR and cortical cataract. Experimental data infer that repeated daily in vivo exposures to short wavelength UVR generate photochemically induced damage in the lens, and that short delay onset cataract after UVR exposure is photochemically induced. Epidemiology suggests that daily high-intensity short wavelength IRR exposure of workers, is associated with a higher prevalence of age-related cataract. It cannot be excluded that this effect is owing to a thermally induced higher denaturation rate. Recent experimental data rule out a photochemical effect of 1090 nm in the lens but other wavelengths in the near IRR should be investigated.
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Affiliation(s)
- P G Söderberg
- Department of Neuroscience, Ophthalmology, Gullstrand laboratory, Uppsala University Hospital, Uppsala, Sweden
| | - N Talebizadeh
- Department of Neuroscience, Ophthalmology, Gullstrand laboratory, Uppsala University Hospital, Uppsala, Sweden
| | - Z Yu
- Department of Neuroscience, Ophthalmology, Gullstrand laboratory, Uppsala University Hospital, Uppsala, Sweden
| | - K Galichanin
- Department of Neuroscience, Ophthalmology, Gullstrand laboratory, Uppsala University Hospital, Uppsala, Sweden
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220
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Zhou CJ, Chen FF, Zhuang CL, Pang WY, Zhang FY, Huang DD, Wang SL, Shen X, Yu Z. Feasibility of radical gastrectomy for elderly patients with gastric cancer. Eur J Surg Oncol 2016; 42:303-11. [DOI: 10.1016/j.ejso.2015.11.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 10/30/2015] [Accepted: 11/20/2015] [Indexed: 12/30/2022] Open
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221
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Zhang LL, Gao Y, Liu Z, Ding X, Yu Z, Sun LC. A trinuclear ruthenium complex as a highly efficient molecular catalyst for water oxidation. Dalton Trans 2016; 45:3814-9. [DOI: 10.1039/c5dt04233j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A trinuclear catalyst, 3, was synthesized based on Ru(bda) (bda = 2,2′-bipyridine-6,6′-dicarboxylic acid)-type catalysts to achieve higher catalytic abilities in homogeneous water oxidation systems.
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Affiliation(s)
- L. L. Zhang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
| | - Y. Gao
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
| | - Z. Liu
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
| | - X. Ding
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
| | - Z. Yu
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
| | - L. C. Sun
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024
- China
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222
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Hu C, Rea C, Yu Z, Lee J. Relative importance of Microcystis
abundance and diversity in determining microcystin dynamics in Lake Erie coastal wetland and downstream beach water. J Appl Microbiol 2015; 120:138-51. [DOI: 10.1111/jam.12983] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/24/2015] [Accepted: 10/14/2015] [Indexed: 11/26/2022]
Affiliation(s)
- C. Hu
- Division of Environmental Health Sciences; College of Public Health; The Ohio State University; Columbus OH USA
| | - C. Rea
- Division of Environmental Health Sciences; College of Public Health; The Ohio State University; Columbus OH USA
| | - Z. Yu
- Department of Animal Sciences; The Ohio State University; Columbus OH USA
| | - J. Lee
- Division of Environmental Health Sciences; College of Public Health; The Ohio State University; Columbus OH USA
- Department of Food Science and Technology; The Ohio State University; Columbus OH USA
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223
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Fang Y, Xie LN, Liu XM, Yu Z, Kong FS, Song NX, Zhou F. Dysregulated module approach identifies disrupted genes and pathways associated with acute myelocytic leukemia. Eur Rev Med Pharmacol Sci 2015; 19:4811-4826. [PMID: 26744873] [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: 06/05/2023]
Abstract
OBJECTIVE To identify disrupted genes and pathways involved in acute myelocytic leukemia (AML) by systematically tracking the dysregulated modules across normal and AML conditions. MATERIALS AND METHODS In this study, we firstly integrated the protein interaction data and expression profiles to infer and reweight the normal and AML networks using Pearson correlation coefficient (PCC). Next, clustering-based on maximal cliques (CMC) approach and a maximum weight bipartite matching method were implemented to infer the condition-specific modules and capture the disturbed modules, respectively, from two conditional networks. Then, the gene compositions and functional enrichment analysis were performed to identify the dysregulated genes and pathways. Finally, reverse transcription polymerase chain reaction (RT-PCR) was implemented to study the expression level of several key genes in AML patients. RESULTS In two conditional-specific networks, universal changes of gene correlations were revealed, making the differential correlation density among disrupted module pairs. In this work, a total of 84 altered modules were identified by comparing modules in normal and AML networks. Functional enrichment analysis showed that genes in altered modules mainly involved in cell cycle, nucleic acids and cancer signaling process, and differentially expressed genes (DEGs) and changed gene correlations were mainly participated in natural killer cell-mediated cytotoxicity and acute myeloid leukemia pathway. The key genes, such as MYC, EGFR, MAPK1 and CCNA1, were all significantly differentially expressed in AML patients. CONCLUSIONS This module approach effectively identifies dysregulated pathways and genes associated with AML. The considerable differences of gene correlations yield to these dysfunctional modules, and the coordinated disruption of these very modules contributes to leukemogenesis.
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Affiliation(s)
- Y Fang
- Department of Hematology, Jinan Military General Hospital, Jinan, China.
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224
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Huang DD, Wang SL, Zhuang CL, Zheng BS, Lu JX, Chen FF, Zhou CJ, Shen X, Yu Z. Sarcopenia, as defined by low muscle mass, strength and physical performance, predicts complications after surgery for colorectal cancer. Colorectal Dis 2015. [PMID: 26194849 DOI: 10.1111/codi.13067] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIM Recent studies have shown that sarcopenia is associated with negative postoperative outcomes. However, none of these studies analysed muscle strength or physical performance, which are also important components of sarcopenia. The present study aimed to investigate whether sarcopenia itself, as defined by low muscle mass, strength and physical performance, would predict complications after surgery for colorectal cancer. METHOD We conducted a prospective study of patients who underwent surgery for colorectal cancer at our department between August 2014 and February 2015. Sarcopenia was diagnosed by a combination of third lumbar vertebra muscle index (L3 MI), handgrip strength and 6-m usual gait speed. Univariate and multivariate analyses evaluating the risk factors for postoperative complications were performed. Only complications classified as Grade II or above according to the Clavien-Dindo classification were analysed in this study. RESULTS A total of 142 patients were included in the study, and 17 patients were diagnosed as having sarcopenia. Postoperative complications of Grade II or above occurred in 40 patients, including 10 with sarcopenia and 30 without sarcopenia. Multivariate analysis showed that sarcopenia and previous abdominal surgery were independent risk factors for postoperative complications. Patients with sarcopenia also had an obvious tendency to a higher incidence of infectious complications. By comparing two logistic regression models, sarcopenia showed a better predictive power for postoperative complications than did low muscle mass. CONCLUSION Sarcopenia and previous abdominal surgery are independent risk factors for complications after surgery for colorectal cancer. Including a functional aspect to the definition of sarcopenia may result in a better prediction of postoperative complications.
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Affiliation(s)
- D-D Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - S-L Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - C-L Zhuang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - B-S Zheng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - J-X Lu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - F-F Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - C-J Zhou
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - X Shen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Z Yu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China.,Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai, China
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225
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Yu Z, Schulmeister K, Talebizadeh N, Kronschläger M, Söderberg P. Thermal cataract induced by near infrared radiation (IRR). Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0416] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Z. Yu
- Neuroscience/Ophthalmology; Gullstrand LAB; Uppsala Sweden
| | - K. Schulmeister
- Laser-LED & Lampen-Sicherheit; Seibersdorf Labor GmbH; Seibersdorf Austria
| | - N. Talebizadeh
- Neuroscience/Ophthalmology; Gullstrand LAB; Uppsala Sweden
| | | | - P. Söderberg
- Neuroscience/Ophthalmology; Gullstrand LAB; Uppsala Sweden
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226
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KronschlaGer M, Talebizadeh N, Yu Z, Löfgren S, Findl O. Sterile corneal keratolysis in the rat at 300 nm. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0384] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Z. Yu
- Gullstrand lab; Uppsala University; Uppsala Sweden
| | - S. Löfgren
- Ophthalmology; Karolinska Institutet; Stockholm Sweden
| | - O. Findl
- Ophthalmology; Hanusch Hospital; Vienna Austria
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227
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Kronschläger M, Yu Z, Talebizadeh N, Söderberg P. Caffeine, an in vivo oxidation protectant in the lens. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0036] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Z. Yu
- Ophthalmology; Uppsala University; Uppsala Sweden
| | | | - P. Söderberg
- Ophthalmology; Uppsala University; Uppsala Sweden
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228
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Sandberg Melin C, Malmberg F, Malmqvist L, Talebizadeh N, Yu Z, Söderberg P. Pigment epithelium central limit - Inner limit of the retina, Minimal Distance, PIMD, a morphometrical variable for glaucoma follow-up. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0304] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- C. Sandberg Melin
- Gullstrand Lab-Opthalmology; Neuroscience; Uppsala University; Uppsala Sweden
- Region Gavleborg; Uppsala University; Gävle Sweden
| | - F. Malmberg
- Information Technology; Uppsala University; Uppsala Sweden
| | - L. Malmqvist
- Gullstrand Lab-Opthalmology; Neuroscience; Uppsala University; Uppsala Sweden
| | - N. Talebizadeh
- Gullstrand Lab-Opthalmology; Neuroscience; Uppsala University; Uppsala Sweden
| | - Z. Yu
- Gullstrand Lab-Opthalmology; Neuroscience; Uppsala University; Uppsala Sweden
| | - P. Söderberg
- Gullstrand Lab-Opthalmology; Neuroscience; Uppsala University; Uppsala Sweden
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229
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Xiao B, Liu B, Song Y, Yu Z, Guo S. Local cytotoxic T-lymphocyte-associated antigen-4 immunoglobulin inhibition of rejection response is dependent on indoleamine 2,3-dioxygenase activities in the allograft. Transplant Proc 2015; 46:3637-40. [PMID: 25498102 DOI: 10.1016/j.transproceed.2014.06.072] [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] [Received: 03/17/2014] [Revised: 04/23/2014] [Accepted: 06/17/2014] [Indexed: 11/28/2022]
Abstract
A previous study showed that local gene transfer of cytotoxic T-lymphocyte-associated antigen-4 immunoglobulin (CTLA4Ig) significantly prolonged the survival time of rat flap allografts. However, the underlying mechanism is not fully understood. Indoleamine 2,3-dioxygenase (IDO) is considered to be able to modulate the unresponsiveness state of allografts. In this study, we tested the expression of the CD80 molecule, IDO mRNA, and the level of the tryptophan metabolite kynurenine with or without the application of the IDO blocker 1-methyl-tryptophan (1-MT) in a rat composite tissue allotransplantation model. CD80 expression could be detected in the allograft. The ration of IDO mRNA/glyceraldehyde 3-phosphate dehydrogenase (GAPDH) mRNA and the level of kynurenine were both enhanced (46.3 ± 8.8 versus 4.6 ± 1.8 and 18.9 ± 1.3 μmol/L versus 2.1 ± 0.2 μmol/L separately) after adenovirus-mediated CTLA4Ig (AdCTLA4Ig) transduction. When 1-MT was applied to the AdCTLA4Ig perfusion recipients, the ration of IDO mRNA/GAPDH mRNA (5.2 ± 2.9) and the level of kynurenine (0.8 ± 0.5 μmol/L) were significantly reduced. Moreover, the allograft survival time was greatly reduced when 1-MT was applied to AdCTLA4Ig perfusion recipients compared to single AdCTLA4Ig perfusion therapy recipients (7.2 days versus 13.6 days). We showed that the inhibitory effect of locally delivered CTLA4Ig is dependent on IDO activities within the allograft.
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Affiliation(s)
- B Xiao
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China.
| | - B Liu
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - Y Song
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - Z Yu
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - S Guo
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China.
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230
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Zou L, Liu J, Zhang H, Wu S, Long C, Ji B, Yu Z, Tang Y, Meng L, Wu A. A rabbit model of antegrade selective cerebral perfusion with cardioplegic arrest. Perfusion 2015; 31:327-33. [PMID: 26265692 DOI: 10.1177/0267659115599835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Due to the weak ascending aorta, it is extremely challenging to establish an anterograde selective cerebral perfusion (ASCP) model in rabbits, especially when cardioplegic arrest is required. Herein, the aim of this study was to establish a rabbit ASCP model with cardiac arrest being easily performed and being similar to the clinical scenario. MATERIALS AND METHODS Twenty-two adult New Zealand white rabbits were selected for ASCP model establishment and another 22 rabbits were utilized for blood donation. The cardiopulmonary bypass (CPB) circuit consisted of a roller pump, a membrane oxygenator, a heat-cooler system and a blood reservoir, which were connected by silicone tubing. The total priming volume of the circuit was 70 ml. Cannulations on the right and left subclavian arteries were used for arterial inflow and cardioplegia perfusion, respectively. Venous drainage was conducted through the right atrial appendage. ASCP was initiated by clamping the innominate artery; the flow rate was maintained 10 ml/kg/minute and sustained for 60 minutes. After 120 minutes of reperfusion, the rabbits were sacrificed. The mean arterial pressure, heart rate, electrocardiogram and urine output were monitored. Arterial blood samples were analyzed at the following time points: after anesthesia, immediately after CPB, after aorta cross-clamping and cardioplegia perfusion, 5 min after the re-opening of the aorta and at CPB termination. RESULTS ASCP modeling was performed successfully on 18 rabbits and 4 rabbits unsuccessfully. Vital signs and blood gas indictors changed in an acceptable range throughout the experiments. One rabbit had ventricular fibrillation after re-opening of the ascending aorta. Obvious hemodilution occurred after the perfusion of cardioplegia, but the hematocrit improved after CPB termination. CONCLUSION By using cannulation of the subclavian artery rather than the aorta and with a low priming volume, we established a modified rabbit model of ASCP with cardioplegic arrest. The model has excellent repeatability and operability, which is similar to the clinic process and is suitable for the study of cerebral, cardiac and renal protection.
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Affiliation(s)
- L Zou
- The Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - J Liu
- The Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - H Zhang
- Department of Surgery and Center for Pediatric Cardiac Surgery, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Science, Beijing, China
| | - S Wu
- The Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - C Long
- The Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - B Ji
- The Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - Z Yu
- Thoracic Cardiovascular Department, Peking University Shougang Hospital, Beijing, China
| | - Y Tang
- Animal Experimental Center, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - L Meng
- Animal Experimental Center, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - A Wu
- Animal Experimental Center, Cardiovascular Institute and Fuwai Hospital, Peking Union Medical College, Beijing, China
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231
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Shi L, Guo X, Shen P, Liu L, Tao S, Li X, Song Q, Yu Z, Yin S, Wang J. Noise-induced damage to ribbon synapses without permanent threshold shifts in neonatal mice. Neuroscience 2015; 304:368-77. [PMID: 26232715 DOI: 10.1016/j.neuroscience.2015.07.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 02/14/2015] [Revised: 07/22/2015] [Accepted: 07/24/2015] [Indexed: 11/29/2022]
Abstract
Recently, ribbon synapses to the hair cells (HCs) in the cochlea have become a novel site of interest in the investigation of noise-induced cochlear lesions in adult rodents (Kujawa and Liberman, 2009; Lin et al., 2011; Liu et al., 2012; Shi et al., 2013). Permanent noise-induced damage to this type of synapse can result in subsequent degeneration of spiral ganglion neurons (SGNs) in the absence of permanent changes to hearing sensitivity. To verify whether noise exposure during an early developmental period produces a similar impact on ribbon synapses, the present study examined the damaging effects of noise exposure in neonatal Kunming mice. The animals received exposure to broadband noise at 105-decibel (dB) sound pressure level (SPL) for 2h on either postnatal day 10 (P10d) or postnatal day 14 (P14d), and then hearing function (based on the auditory brainstem response (ABR)) and cochlear morphology were evaluated during either postnatal weeks 3-4 (P4w) or postnatal weeks 7-8 (P8w). There were no significant differences in the hearing threshold between noise-exposed and control animals, which suggests that noise did not cause permanent loss of hearing sensitivity. However, noise exposure did produce a significant loss of ribbon synapses, particularly in P14d mice, which continued to increase from P4w to P8w. Additionally, a corresponding reduction in the amplitude of compound action potential (CAP) was observed in the noise-exposed groups at P4w and P8w, and the CAP latency was elongated, indicating a change in synaptic function.
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Affiliation(s)
- L Shi
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China.
| | - X Guo
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China; Children's Medical Center, The Second Affiliated Hospital of Nanjing Medical University, 262 Zhongshan Road North, Nanjing 210003, China.
| | - P Shen
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China.
| | - L Liu
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China.
| | - S Tao
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China.
| | - X Li
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China.
| | - Q Song
- Department of Otolaryngology, 6th Affiliated Hospital, Jiaotong University, 600 Yishan Road, Shanghai 200233, China.
| | - Z Yu
- School of Human Communication Disorders, Dalhousie University, 1256 Barrington Street, Halifax, NS B3J1Y6, Canada.
| | - S Yin
- Department of Otolaryngology, 6th Affiliated Hospital, Jiaotong University, 600 Yishan Road, Shanghai 200233, China.
| | - J Wang
- Department of Physiology, Medical College of Southeast University, 87 Dingjiaoqiao Road, Nanjing 210009, China; School of Human Communication Disorders, Dalhousie University, 1256 Barrington Street, Halifax, NS B3J1Y6, Canada.
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232
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Wang L, Gutek A, Grewal S, Michel FC, Yu Z. Changes in diversity of cultured bacteria resistant to erythromycin and tetracycline in swine manure during simulated composting and lagoon storage. Lett Appl Microbiol 2015; 61:245-51. [PMID: 26031793 DOI: 10.1111/lam.12450] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 03/09/2015] [Revised: 05/13/2015] [Accepted: 05/14/2015] [Indexed: 11/27/2022]
Abstract
UNLABELLED This study investigated the impact of composting and lagoon storage on survival and change in diversity of tetracycline-resistant (Tc(r) ) and erythromycin-resistant (Em(r) ) bacteria and the resistance genes they carry in swine manure. Treatments were arranged as a 2 × 2 factorial design: composting vs lagoon storage and 0 vs 1% Surround WP Crop Protectant (a clay product) in three replicates. After 48 days of treatments, resistant bacteria were enumerated by selective plating and identified by 16S rRNA gene sequencing. The erm and the tet gene(s) carried by the resistant isolates were screened using class-specific PCR assays. The plate counts of Tc(r) and Em(r) bacteria decreased by 4-7 logs by composting, but only by 1-2 logs by the lagoon treatment. During the treatments, Acinetobacter gave way to Pseudomonas and Providencia as the largest resistant genera. The clay product had little effect on survival or diversity of resistant bacteria. Of six classes of erm and seven classes of tet genes tested, changes in prevalence were also noted. The results indicate that composting can dramatically shift Tc(r) and Em(r) bacterial populations, and composting can be an effective and practical approach to decrease dissemination of antibiotic resistance from swine farms to the environment. SIGNIFICANCE AND IMPACT OF THE STUDY The presented research provided evidence that composting is much more effective than lagoon storage in dramatically decreasing culturable bacteria resistant to erythromycin and tetracycline in swine manure. Considerable diversity changes of resistant bacteria were also demonstrated during composting or lagoon storage. Overall, Acinetobacter was the major resistant genus in untreated swine manure, but pseudomonads and Providencia became the major resistant genera after the treatments. This is the first study that investigated diversity changes of cultured bacteria resistant to these two antibiotics during composting and lagoon storage of swine manure. New genes encoding resistance to the two antibiotics were also implied in the cultured isolates.
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Affiliation(s)
- L Wang
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - A Gutek
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - S Grewal
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, Wooster, OH, USA
| | - F C Michel
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, Wooster, OH, USA
| | - Z Yu
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
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233
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Rodriguez-Peña AB, Gomez-Rodriguez J, Kortum RL, Palmer DC, Yu Z, Guittard GC, Wohlfert EA, Silver PB, Misplon JA, Sommers CL, Feigenbaum L, Epstein SL, Caspi RR, Belkaid Y, Restifo NP, Samelson LE, Balagopalan L. Enhanced T-cell activation and differentiation in lymphocytes from transgenic mice expressing ubiquitination-resistant 2KR LAT molecules. Gene Ther 2015; 22:781-92. [PMID: 26018935 DOI: 10.1038/gt.2015.48] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 02/22/2015] [Accepted: 03/20/2015] [Indexed: 12/26/2022]
Abstract
Linker for activation of T cells (LAT) is critical for the propagation of T-cell signals upon T-cell receptor (TCR) activation. Previous studies demonstrated that substitution of LAT lysines with arginines (2KR LAT) resulted in decreased LAT ubiquitination and elevated T-cell signaling, indicating that LAT ubiquitination is a molecular checkpoint for attenuation of T-cell signaling. To investigate the role of LAT ubiquitination in vivo, we have generated transgenic mice expressing WT and ubiquitin-defective 2KR LAT. On TCR stimulation of T cells from these mice, proximal signaling and cytokine production was elevated in 2KR versus wild-type (WT) LAT mice. Enhanced cytolytic activity as well as T-helper responses were observed on LAT expression, which were further elevated by 2KR LAT expression. Despite greater T-effector function, WT or 2KR LAT expression did not have any effect on clearance of certain pathogens or tumors. Our data support the model that lack of tumor clearance is due to increased differentiation and acquisition of effector phenotype that is associated with suboptimal immunity in an immunotherapy model. Thus, our data further reinforce the role of LAT ubiquitination in TCR signaling and uncovers a novel role for LAT in driving T-cell differentiation.
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Affiliation(s)
- A B Rodriguez-Peña
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.,Centro de Investigación del Cáncer, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas-University of Salamanca, Salamanca, Spain
| | - J Gomez-Rodriguez
- Cell Signaling and Immunity Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - R L Kortum
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Pharmacology; Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - D C Palmer
- Tumor Immunology Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Z Yu
- Tumor Immunology Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - G C Guittard
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - E A Wohlfert
- Immunity at Barrier Sites Initiative, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA.,Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA.,Department of Microbiology and Immunology, School of Medicine and Biomedical Sciences, University at Buffalo (SUNY), Buffalo, NY, USA
| | - P B Silver
- Immunoregulation Section, National Eye Institute, National Institutes of Health, Bethesda, MD, USA
| | - J A Misplon
- Center for Biologics Evaluation & Research, Food and Drug Administration, Silver Spring, MD, USA
| | - C L Sommers
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - L Feigenbaum
- Laboratory Animal Sciences Program, Leidos Biomedical Research Inc, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - S L Epstein
- Center for Biologics Evaluation & Research, Food and Drug Administration, Silver Spring, MD, USA
| | - R R Caspi
- Immunoregulation Section, National Eye Institute, National Institutes of Health, Bethesda, MD, USA
| | - Y Belkaid
- Immunity at Barrier Sites Initiative, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA.,Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA
| | - N P Restifo
- Tumor Immunology Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - L E Samelson
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - L Balagopalan
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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234
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Liu NF, Yu Z, Luo Y, Sun D, Yan Z. A NOVEL FLT4 GENE MUTATION AND MR LYMPHANGIOGRAPHY IN A CHINESE FAMILY WITH MILROY DISEASE. Lymphology 2015; 48:93-96. [PMID: 26714373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Milroy disease is a congenital onset lymphedema linked to FLT4 gene mutations in the tyrosine kinase domain. So far, a total of 59 different FLT4 variants have been identified. Here, we report a novel FLT4 gene mutation in a Chinese family with Milroy disease and present their clinical symptoms and MR lymphangiographic findings.
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235
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Yang K, Yu Z, Chen H, Mourtada F. SU-E-T-250: Determining VMAT Machine Limitations of An Elekta Linear Accelerator with Agility MLC for Accurate Modeling in RayStation and Robust Delivery. Med Phys 2015. [DOI: 10.1118/1.4924612] [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: 11/07/2022] Open
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236
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Abstract
Brain natriuretic peptide (BNP) is used as a marker of cardiac dysfunction to predict heart failure mortality. The significance of the prognostic ability of BNP for liver cirrhosis remains unknown, although the levels of BNP seen in cirrhosis are high. We aimed to determine whether the BNP level is related to the stage of cirrhosis and could serve as a prognostic marker of cirrhosis (predict the 1-year all-cause mortality). We recruited 92 patients at different stages of cirrhosis and 81 controls matched by age and gender for this study. At admission, cardiac physical examination and BNP measurements were performed. Upon discharge, the 89 patients were followed up for 12 months. The median BNP levels of patients with cirrhosis were 167.0 pg/mL, which were significantly higher than those of the control group (167.0 vs 34.8 pg/mL, P = 0.001). Serum BNP levels were positively correlated with the Child score, the grade of esophageal varices, a history of spontaneous bacterial peritonitis, and the presence of ascites and collateral circulation. BNP levels above the median were associated with an increased occurrence of death within 12 months of discharge (log rank P = 0.025), as determined by univariate and multivariate Cox regression analyses. Esophageal varices, large/medium volume ascites, and BNP levels were related to the clinical outcome (P = 0.034, 0.030, and 0.025, respectively). Together, these results suggested that serum BNP levels are significantly correlated with the stage of cirrhosis, suggesting that BNP levels might serve as a significant predictor for 1-year all-cause mortality.
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Affiliation(s)
- L Y Shi
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - R Jin
- Department of Epidemiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - C J Lin
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - J S Wu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - X W Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Z Yu
- Department of Surgery, Shanghai Tenth People's Hospital, Shanghai, China
| | - P C Zhang
- Department of General Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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237
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Wei G, Yu Z, Qu J. What made children active during rehabilitation sessions. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1636] [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: 10/23/2022]
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238
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Patra AK, Yu Z. Effects of garlic oil, nitrate, saponin and their combinations supplemented to different substrates on in vitro fermentation, ruminal methanogenesis, and abundance and diversity of microbial populations. J Appl Microbiol 2015; 119:127-38. [PMID: 25846054 DOI: 10.1111/jam.12819] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [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: 01/19/2015] [Revised: 03/25/2015] [Accepted: 03/31/2015] [Indexed: 11/28/2022]
Abstract
AIMS To investigate the effect of garlic oil (G), nitrate (N), saponin (S) and their combinations supplemented to different forage to concentrate substrates on methanogenesis, fermentation, diversity and abundances of bacteria and Archaea in vitro. METHODS AND RESULTS The study was conducted in an 8 × 2 factorial design with eight treatments and two substrates using mixed ruminal batch cultures obtained. Quillaja S (0·6 g l(-1) ), N (5 mmol l(-1) ) and G (0·27 g l(-1) ) were used separately or in binary and tertiary combinations. The two substrates contained grass hay and a dairy concentrate mixture at a 70 : 30 (high-forage substrate) ratio or a 30 : 70 (high-concentrate substrate) ratio. Ruminal fermentation and cellulolytic bacterial populations were affected by interaction between substrate and anti-methanogenic compounds. The inhibitor combinations decreased the methane production additively regardless of substrate. For the high-concentrate substrate, S decreased methane production to a greater extent, so did G and N individually for the high-forage substrate. Feed degradability and total volatile fatty acid (VFA) concentrations were not decreased by any of the treatments. Fibre degradability was actually improved by N+S for the high-forage substrate. VFA concentrations and profiles were affected differently by different anti-methanogenic inhibitors and their combinations. All treatments inhibited the growth of Archaea, but the effect on Fibrobacter succinogenes, Ruminococcus albus and Ruminococcus flavefaciens varied. CONCLUSIONS The results suggest that substrate influences the efficacy of these inhibitors when they are used separately, but in combinations, they can lower methanogenesis additively without much influence from the substrate. SIGNIFICANCE AND IMPACT OF THE STUDY The presented research provided evidence that binary and tertiary combination of garlic oil, nitrate and saponin can lower the methane production additively without adversely impacting rumen fermentation and degradability, and forage to concentrate ratio does not change the above effects. These anti-methanogenic inhibitors in combination may have practical application to mitigate methane emission from ruminants.
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Affiliation(s)
- A K Patra
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA.,Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, Kolkata, India
| | - Z Yu
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
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239
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Gibaja V, Shen F, Harari J, Korn J, Ruddy D, Saenz-Vash V, Zhai H, Rejtar T, Paris CG, Yu Z, Lira M, King D, Qi W, Keen N, Hassan AQ, Chan HM. Development of secondary mutations in wild-type and mutant EZH2 alleles cooperates to confer resistance to EZH2 inhibitors. Oncogene 2015; 35:558-66. [PMID: 25893294 PMCID: PMC4744243 DOI: 10.1038/onc.2015.114] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 02/27/2015] [Accepted: 03/06/2015] [Indexed: 12/22/2022]
Abstract
The histone methyltransferase Enhancer of Zeste Homolog 2 (EZH2) is frequently dysregulated in cancers, and gain-of-function (GOF) EZH2 mutations have been identified in non-Hodgkin lymphomas. Small-molecule inhibitors against EZH2 demonstrated anti-tumor activity in EZH2-mutated lymphomas and entered clinical trials. Here, we developed models of acquired resistance to EZH2 inhibitor EI1 with EZH2-mutated lymphoma cells. Resistance was generated by secondary mutations in both wild-type (WT) and GOF Y641N EZH2 alleles. These EZH2 mutants retained the substrate specificity of their predecessor complexes but became refractory to biochemical inhibition by EZH2 inhibitors. Resistant cells were able to maintain a high level of H3K27Me3 in the presence of inhibitors. Interestingly, mutation of EZH2 WT alone generated an intermediate resistance phenotype, which is consistent with a previously proposed model of cooperation between EZH2 WT and Y641N mutants to promote tumorigenesis. In addition, the findings presented here have implications for the clinical translation of EZH2 inhibitors and underscore the need to develop novel EZH2 inhibitors to target potential resistance emerging in clinical settings.
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Affiliation(s)
- V Gibaja
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - F Shen
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - J Harari
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - J Korn
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - D Ruddy
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - V Saenz-Vash
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - H Zhai
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - T Rejtar
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - C G Paris
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Z Yu
- China Novartis Institutes for BioMedical Research, Shanghai, China
| | - M Lira
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - D King
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - W Qi
- China Novartis Institutes for BioMedical Research, Shanghai, China
| | - N Keen
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - A Q Hassan
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - H M Chan
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
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Yang H, Xu W, Zhou Z, Liu J, Li X, Chen L, Weng J, Yu Z. Curcumin Attenuates Urinary Excretion of Albumin in Type II Diabetic Patients with Enhancing Nuclear Factor Erythroid-Derived 2-Like 2 (Nrf2) System and Repressing Inflammatory Signaling Efficacies. Exp Clin Endocrinol Diabetes 2015; 123:360-7. [DOI: 10.1055/s-0035-1545345] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- H. Yang
- Biomedical Drug R&D Center, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - W. Xu
- Biomedical Drug R&D Center, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Z. Zhou
- Biomedical Drug R&D Center, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - J. Liu
- Department of Endocrinology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X. Li
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - L. Chen
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - J. Weng
- Department of Endocrinology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Z. Yu
- Biomedical Drug R&D Center, Fujian University of Traditional Chinese Medicine, Fuzhou, China
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241
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Taft D, Ward D, Ollberding N, Schibler K, Ambalavanan N, Yu Z, Newburg D, Davidson B, Morrow A. Preterm Infant Gut Microbiome and Weight at 36 Weeks Corrected Gestational Age. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.601.6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Diana Taft
- CAGE Cincinnati Children's HospitalUnited States
| | - D Ward
- Perinatal Institute Cincinnati Children's HospitalUnited States
| | - N Ollberding
- Biostatistics and Epidemiology Cincinnati Children's HospitalUnited States
| | - K Schibler
- Perinatal Institute Cincinnati Children's HospitalUnited States
| | - N Ambalavanan
- PediatricsUniversity of Alabama at BirminghamUnited States
| | - Z Yu
- BiologyBoston CollegeUnited States
| | | | - B Davidson
- Perinatal Institute Cincinnati Children's HospitalUnited States
| | - A Morrow
- Perinatal Institute Cincinnati Children's HospitalUnited States
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242
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Firkins JL, Yu Z. RUMINANT NUTRITION SYMPOSIUM: How to use data on the rumen microbiome to improve our understanding of ruminant nutrition1,2. J Anim Sci 2015; 93:1450-70. [DOI: 10.2527/jas.2014-8754] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- J. L. Firkins
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - Z. Yu
- Department of Animal Sciences, The Ohio State University, Columbus 43210
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243
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Ollberding N, Ward D, Cline A, Taft D, Davidson B, Yu Z, Valentine C, Newburg D, Morrow A. Human Gut Microbes Associated with Infant Weight‐for‐Length Growth. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.385.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- N. Ollberding
- Cincinnati Children's HospitalUnited States
- University of CincinnatiUnited States
| | - D. Ward
- Broad InstituteUnited States
| | - A Cline
- Cincinnati Children's HospitalUnited States
- University of CincinnatiUnited States
| | - D. Taft
- Cincinnati Children's HospitalUnited States
- University of CincinnatiUnited States
| | - B Davidson
- Cincinnati Children's HospitalUnited States
| | - Z. Yu
- Boston CollegeUnited States
| | | | | | - A Morrow
- Cincinnati Children's HospitalUnited States
- University of CincinnatiUnited States
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244
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Yu Z, Zhang L, Jiang P, Papelis C, Li Y. Study on water-rock interactions of trace elements in groundwater with leaching experiments. Ground Water 2015; 53 Suppl 1:95-102. [PMID: 24601971 DOI: 10.1111/gwat.12182] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Accepted: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Measurements of trace elements leached from host rocks can indicate the source of flowing groundwater and provide the host rock's fingerprint information that may be useful in understanding the mixing patterns of different groundwaters and flowpaths. In this study, the leaching characteristics of three widely-distributed aquifer host rocks in Southern Nevada were investigated through leaching experiments of 13 trace elements under different experimental conditions (leaching time, pH, grain size, and rock mineralogy). The fraction of leached trace elements from different aquifer host rocks was calculated for examining the water-rock interaction in different conditions. The effect of host rock mineralogy on leachate composition was examined, which could provide useful information about groundwater source. Solute speciation and saturation indices were simulated using geochemical modeling to further explore the redistribution and leaching process of trace elements.
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Affiliation(s)
- Z Yu
- Department of Geoscience, University of Nevada Las Vegas, Las Vegas, NV 89154
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245
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Usmanov DT, Chen LC, Yu Z, Yamabe S, Sakaki S, Hiraoka K. Atmospheric pressure chemical ionization of explosives using alternating current corona discharge ion source. J Mass Spectrom 2015; 50:651-661. [PMID: 26149109 DOI: 10.1002/jms.3552] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 10/28/2014] [Accepted: 11/19/2014] [Indexed: 06/04/2023]
Abstract
The high-sensitive detection of explosives is of great importance for social security and safety. In this work, the ion source for atmospheric pressure chemical ionization/mass spectrometry using alternating current corona discharge was newly designed for the analysis of explosives. An electromolded fine capillary with 115 µm inner diameter and 12 mm long was used for the inlet of the mass spectrometer. The flow rate of air through this capillary was 41 ml/min. Stable corona discharge could be maintained with the position of the discharge needle tip as close as 1 mm to the inlet capillary without causing the arc discharge. Explosives dissolved in 0.5 µl methanol were injected to the ion source. The limits of detection for five explosives with 50 pg or lower were achieved. In the ion/molecule reactions of trinitrotoluene (TNT), the discharge products of NOx (-) (x = 2,3), O3 and HNO3 originating from plasma-excited air were suggested to contribute to the formation of [TNT - H](-) (m/z 226), [TNT - NO](-) (m/z 197) and [TNT - NO + HNO3 ](-) (m/z 260), respectively. Formation processes of these ions were traced by density functional theory calculations. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- D T Usmanov
- Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
- Institute of Ion-Plasma and Laser Technologies, Dormon Yoli Street 33, Akademgorodok, Tashkent, 100125, Uzbekistan
| | - L C Chen
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
| | - Z Yu
- Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
- School of Chemical and Life Sciences, Shenyang Normal University, Shenyang, 110034, China
| | - S Yamabe
- Fukui Institute of Fundamental Chemistry, Kyoto University, Takano, Sakyoku, Kyoto, 606-8103, Japan
| | - S Sakaki
- Fukui Institute of Fundamental Chemistry, Kyoto University, Takano, Sakyoku, Kyoto, 606-8103, Japan
| | - K Hiraoka
- Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
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246
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Jie H, Tao S, Liu L, Xia L, Charko A, Yu Z, Bance M, Yin S, Robertson GS, Wang J. Cochlear protection against cisplatin by viral transfection of X-linked inhibitor of apoptosis protein across round window membrane. Gene Ther 2015; 22:546-52. [PMID: 25809464 DOI: 10.1038/gt.2015.22] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 01/23/2023]
Abstract
We have previously demonstrated that both age-related and noise-induced hearing loss are reduced in transgenic mice that ubiquitously overexpress X-linked inhibitor of apoptosis protein (XIAP). In view of the therapeutic implications of these findings, we have developed a minimally invasive surgical method to deliver adenoid-associated virus (AAV) across the round window membrane (RWM) of the cochlea, enabling efficient gene transfer to hair cells and sensory neurons in this enclosed structure. This RWM approach was used in the present study to evaluate the effectiveness of AAV-mediated XIAP overexpression in protecting against cisplatin-induced ototoxicity. Two weeks following surgery, AAV-derived XIAP was detected in the majority of inner and outer hair cells, resulting in a threefold elevation of this antiapoptotic protein in the cochlea. The protection of AAV-mediated XIAP overexpression was evaluated in animals treated with cisplatin at a dose of 4 mg kg(-1) per day for 4-7 consecutive days. The XIAP overexpression was found to attenuate cisplatin-induced hearing loss by ~22 dB. This was accompanied by a reduction of the loss of vulnerable hair cells and sensory neurons in the cochlea by 13%.
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Affiliation(s)
- H Jie
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - S Tao
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - L Liu
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - L Xia
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - A Charko
- School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Z Yu
- School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
| | - M Bance
- Department of Surgery, Division of Otolaryngology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - S Yin
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - G S Robertson
- Departments of Psychiatry and Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - J Wang
- 1] Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China [2] School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
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247
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Yu Z, Leng S, Jorgensen SM, Li Z, Gutjahr R, Chen B, Duan X, Halaweish AF, Yu L, Ritman EL, McCollough CH. Initial results from a prototype whole-body photon-counting computed tomography system. Proc SPIE Int Soc Opt Eng 2015; 9412. [PMID: 26097280 DOI: 10.1117/12.2082739] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
X-ray computed tomography (CT) with energy-discriminating capabilities presents exciting opportunities for increased dose efficiency and improved material decomposition analyses. However, due to constraints imposed by the inability of photon-counting detectors (PCD) to respond accurately at high photon flux, to date there has been no clinical application of PCD-CT. Recently, our lab installed a research prototype system consisting of two x-ray sources and two corresponding detectors, one using an energy-integrating detector (EID) and the other using a PCD. In this work, we report the first third-party evaluation of this prototype CT system using both phantoms and a cadaver head. The phantom studies demonstrated several promising characteristics of the PCD sub-system, including improved longitudinal spatial resolution and reduced beam hardening artifacts, relative to the EID sub-system. More importantly, we found that the PCD sub-system offers excellent pulse pileup control in cases of x-ray flux up to 550 mA at 140 kV, which corresponds to approximately 2.5×1011 photons per cm2 per second. In an anthropomorphic phantom and a cadaver head, the PCD sub-system provided image quality comparable to the EID sub-system for the same dose level. Our results demonstrate the potential of the prototype system to produce clinically-acceptable images in vivo.
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Affiliation(s)
- Z Yu
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
| | - S Leng
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
| | - S M Jorgensen
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA 55905
| | - Z Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA 55905
| | - R Gutjahr
- Siemens Medical Solutions, Malvern, PA, USA 19355
| | - B Chen
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
| | - X Duan
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
| | | | - L Yu
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
| | - E L Ritman
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA 55905
| | - C H McCollough
- Department of Radiology, Mayo Clinic, Rochester, MN, USA 55905
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248
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Shuen WH, Kan R, Yu Z, Lung HL, Lung ML. Novel lentiviral-inducible transgene expression systems and versatile single-plasmid reporters for in vitro and in vivo cancer biology studies. Cancer Gene Ther 2015; 22:207-14. [PMID: 25721206 DOI: 10.1038/cgt.2015.9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 12/11/2022]
Abstract
Many of the cancer cell lines derived from solid tumors are difficult to transfect using commonly established transfection approaches. This hurdle for some DNA transfection systems has hindered cancer biology studies. Moreover, there are limited tools for studying pathway activities. Therefore, highly efficient improved gene transfer and versatile genetic tools are required. In this study, we established and developed a comprehensive set of new lentiviral tools to study gene functions and pathway activities. Using the optimized conditions, cancer cell lines achieved >90% transduction efficiency. Novel lentiviral doxycycline-regulated pTet-IRES-EGFP (pTIE) systems for transgene expression and TRE reporters used for pathway activity determination were developed and tested. The pTIE Tet-Off system showed in vitro doxycycline-sensitive responses with low or undetectable leakage of protein expression and in vivo tumor suppression as illustrated using candidate tumor suppressors, Fibulin-2 and THY1. In contrast, the Tet-On system showed dose-dependent responses. The pTRE-EGFP (pTE) and pTRE-FLuc-EF1α-RLuc (pT-FER) reporters with the NFκB p65 subunit consensus sequence showed GFP and firefly luciferase responses, which were directly correlated with TNFα stimulation, respectively. Taken together, these newly developed lentiviral systems provide versatile in vitro and in vivo platforms to strengthen our capabilities for cancer biology studies.
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Affiliation(s)
- W H Shuen
- Department of Clinical Oncology, University of Hong Kong, Hong Kong (SAR), China
| | - R Kan
- Department of Clinical Oncology, University of Hong Kong, Hong Kong (SAR), China
| | - Z Yu
- Department of Clinical Oncology, University of Hong Kong, Hong Kong (SAR), China
| | - H L Lung
- 1] Department of Clinical Oncology, University of Hong Kong, Hong Kong (SAR), China [2] Center for Cancer Research, University of Hong Kong, Hong Kong (SAR), China [3] Center for Nasopharyngeal Carcinoma Research, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong (SAR), China
| | - M L Lung
- 1] Department of Clinical Oncology, University of Hong Kong, Hong Kong (SAR), China [2] Center for Cancer Research, University of Hong Kong, Hong Kong (SAR), China [3] Center for Nasopharyngeal Carcinoma Research, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong (SAR), China
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249
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Abstract
SUMMARY The present meta-analysis shows that a nonlinear association between alcohol consumption and the risk of hip fracture was observed. Light alcohol consumption was inversely significantly associated with hip fracture risk, whereas heavy alcohol consumption was associated with an elevated hip fracture risk. INTRODUCTION Previous studies examining the association between alcohol consumption and the risk of hip fracture have reported conflicting findings. Therefore, we conducted a meta-analysis of prospective cohort studies to assess the association between alcohol consumption and the risk of hip fracture. METHODS PubMed and EMBASE were searched for prospective cohort studies on the relationship between alcohol consumption and the risk of hip fractures. Relative risks (RR) with 95% confidence intervals (CI) were derived using random-effects models throughout the whole analysis. RESULTS Eighteen prospective cohort studies were included with 3,730,424 participants and 26,168 hip fracture cases. Compared with non-drinkers, the pooled RR of hip fractures for alcohol consumption was 1.03 (95% CI, 0.91-1.15), with high heterogeneity between studies (P<0.001, I2=72.6%). A nonlinear relationship between alcohol consumption and the risk of hip fracture was identified (P nonlinearity=0.003). Compared with non-drinkers, the pooled RRs of hip fractures were 0.88 (95% CI, 0.83-0.89) for light alcohol consumption (0.01-12.5 g/day), 1.00 (95% CI, 0.85-1.14) for moderate alcohol consumption (12.6-49.9 g/day), and 1.71 (95% CI, 1.41-2.01) for heavy alcohol consumption (≥50 g/day). CONCLUSIONS There was no evidence of publication bias. In conclusion, a nonlinear association between alcohol consumption and the risk of hip fracture was observed in this meta-analysis. Further, light alcohol consumption was inversely significantly associated with hip fracture risk, whereas heavy alcohol consumption was associated with an elevated hip fracture risk.
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Affiliation(s)
- X Zhang
- Department of Clinical Medicine, Shanghai Medical College, Fudan University, Shanghai, China
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250
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Liu H, Xu R, Sun R, Wang Q, Liu J, Ge W, Yu Z. Association of PTPN22 gene polymorphism with type 1 diabetes mellitus in Chinese children and adolescents. Genet Mol Res 2015; 14:63-8. [DOI: 10.4238/2015.january.15.8] [Citation(s) in RCA: 7] [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: 11/03/2022]
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