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Fang Z, Ren Q, Wang H, Cao J, Shen X, Zhang W, Wan W, Yin W, Li L, Zang B. A New Strategy for the High-Throughput Characterization of Materials' Mechanical Homogeneity Based on the Effect of Isostatic Pressing on Surface Microstrain. Materials (Basel) 2024; 17:669. [PMID: 38591504 PMCID: PMC10856066 DOI: 10.3390/ma17030669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 04/10/2024]
Abstract
A new strategy for the high-throughput characterization of the mechanical homogeneity of metallurgical materials is proposed. Based on the principle of hydrostatic transmission and the synergistic analysis of the composition, microstructure, defects, and surface profile of the chosen material, the microstrain characteristics and changes in surface roughness after isostatic pressing were analyzed. After isostatic pressing, two types of microstrains were produced: low microstrain (surface smoothening with decreasing roughness) and large microstrain (surface roughening with increasing roughness). Furthermore, the roughness of the roughened microregions could be further classified based on the strain degree. The phenomenon of weak-interface damage with a large microstrain (plastic deformation, cleavage fracture, and tearing near nonmetallic inclusions) indicated that the surface microstrain analysis could be a new method of high-throughput characterization for microregions with relatively poor micromechanical properties. In general, the effect of isostatic pressing on the surface microstrain of heat-resistant steel provides a promising strategy for achieving high-throughput screening and statistically characterizing microregions with poor micromechanical properties, such as microregions containing microcracks, nonmetallic inclusions, pores, and other surface defects.
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Affiliation(s)
- Zhigang Fang
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Qun Ren
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Haizhou Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Jingyi Cao
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Xuejing Shen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Wenyu Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Weihao Wan
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Wenchang Yin
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Liang Li
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Bolin Zang
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
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2
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Mahmoud M, Huang Y, Garimella K, Audano PA, Wan W, Prasad N, Handsaker RE, Hall S, Pionzio A, Schatz MC, Talkowski ME, Eichler EE, Levy SE, Sedlazeck FJ. Utility of long-read sequencing for All of Us. Nat Commun 2024; 15:837. [PMID: 38281971 PMCID: PMC10822842 DOI: 10.1038/s41467-024-44804-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/03/2024] [Indexed: 01/30/2024] Open
Abstract
The All of Us (AoU) initiative aims to sequence the genomes of over one million Americans from diverse ethnic backgrounds to improve personalized medical care. In a recent technical pilot, we compare the performance of traditional short-read sequencing with long-read sequencing in a small cohort of samples from the HapMap project and two AoU control samples representing eight datasets. Our analysis reveals substantial differences in the ability of these technologies to accurately sequence complex medically relevant genes, particularly in terms of gene coverage and pathogenic variant identification. We also consider the advantages and challenges of using low coverage sequencing to increase sample numbers in large cohort analysis. Our results show that HiFi reads produce the most accurate results for both small and large variants. Further, we present a cloud-based pipeline to optimize SNV, indel and SV calling at scale for long-reads analysis. These results lead to widespread improvements across AoU.
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Affiliation(s)
- M Mahmoud
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Y Huang
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - K Garimella
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - P A Audano
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, 06032, USA
| | - W Wan
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - N Prasad
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - R E Handsaker
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - S Hall
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - A Pionzio
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - M C Schatz
- Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA
| | - M E Talkowski
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - E E Eichler
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - S E Levy
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
| | - F J Sedlazeck
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- Department of Computer Science, Rice University, Houston, TX, USA.
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Khavnekar S, Wan W, Majumder P, Wietrzynski W, Erdmann PS, Plitzko JM. Multishot tomography for high-resolution in situ subtomogram averaging. J Struct Biol 2023; 215:107911. [PMID: 36343843 DOI: 10.1016/j.jsb.2022.107911] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/29/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
Abstract
Cryo-electron tomography (cryo-ET) and subtomogram averaging (STA) can resolve protein complexes at near atomic resolution, and when combined with focused ion beam (FIB) milling, macromolecules can be observed within their native context. Unlike single particle acquisition (SPA), cryo-ET can be slow, which may reduce overall project throughput. We here propose a fast, multi-position tomographic acquisition scheme based on beam-tilt corrected beam-shift imaging along the tilt axis, which yields sub-nanometer in situ STA averages.
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Affiliation(s)
| | - W Wan
- Vanderbilt University, United States
| | | | | | - P S Erdmann
- MPI for Biochemistry, Germany; Human Technopole, Italy.
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Dong C, Sun D, Li D, Yang W, Wang H, Wan W, Yan Z. A Quantitative Method for the Composition of 7B05 Cast-Rolled Aluminum Alloys Based on Micro-Beam X-ray Fluorescence Spectroscopy and Its Application in Element Segregation of Recrystallization. Materials (Basel) 2023; 16:1605. [PMID: 36837234 PMCID: PMC9962192 DOI: 10.3390/ma16041605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 06/18/2023]
Abstract
Microscopic content segregation is among the important reasons for the anisotropy of mechanical properties in the cast-rolled sheets of the 7B05 aluminum alloy. It is of great significance to study the uniformity of aluminum alloys in terms of the microscopic composition and structure. In this study, a precise method for composition quantification based on micro-beam X-ray fluorescence spectroscopy is established by parameter optimization and a calibration coefficient. Furthermore, this method was applied for exploring and quantifying the relationship between recrystallization and deformation microstructures. The results show that the comprehensive measurement effects of all elements are the best when the X-ray tube voltage is 50 kV, the current is 150 μA, and the single-pixel scanning time is 100 ms. After verification, the sum of differences between the measured values and the standard values for all elements using the calibration coefficient is only 0.107%, which confirms the accuracy of the optimized quantitative method. Three types of segregation indexes in national standards were used to capture small differences, and finally ensure that the segregation degrees of elements are Ti > Fe > Cr > Cu > Mn > Zr > Zn > Al. The quantitative segregation results obtained by the spatial-mapping method show that the difference in the content of Al and Zn is approximately 0.2% between the recrystallization region and the deformation region, the difference in the content of Fe and Ti is 0.018% and 0.013%, the difference in the content of Cr, Cu and Zr is approximately 0.01%, and the difference in the content of Mn is not obvious, only 0.004%.
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Affiliation(s)
- Caichang Dong
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
- National Observation & Research Station on Materials Corrosion in Marine and Atmospheric Environment in Qingdao, Qingdao 266071, China
| | - Dandan Sun
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
- National Observation & Research Station on Materials Corrosion in Marine and Atmospheric Environment in Qingdao, Qingdao 266071, China
| | - Dongling Li
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Wanguo Yang
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
- National Observation & Research Station on Materials Corrosion in Marine and Atmospheric Environment in Qingdao, Qingdao 266071, China
| | - Haizhou Wang
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Weihao Wan
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Zun Yan
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
- National Observation & Research Station on Materials Corrosion in Marine and Atmospheric Environment in Qingdao, Qingdao 266071, China
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Zhou J, Yang S, Wan W, Chen L, Chen J. Synergistic Catalysis of Mesoporous Cu/Co3O4 and Surface Oxygen Vacancy for CO2 Fixation to Carbamates. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.017] [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: 01/22/2023]
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6
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Yu Y, Zhou W, Li Y, Wan W, Yao D, Wei X. Nuclear and Mitochondrial DNA Suggest That Nature Reserve Maintains Novel Haplotypes and Genetic Diversity of Honeybees (Apis cerana). RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422120146] [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: 12/29/2022]
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Han B, Sun D, Wan W, Dong C, Li D, Zhao L, Wang H. Correlation among Composition, Microstructure and Hardness of 7xxx Aluminum Alloy Using Original Statistical Spatial-Mapping Method. Materials (Basel) 2022; 15:5767. [PMID: 36013903 PMCID: PMC9413701 DOI: 10.3390/ma15165767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/31/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
The quantitative study of the relationship between material composition, microstructure and properties is of great importance for the improvement in material properties. In this study, the continuous data of elemental composition, recrystallization, hardness and undissolved phase distribution of the same sample in the range of 60 to 150 square millimeters were obtained by high-throughput testing instrument. The distribution characteristics and rules of a single data set were analyzed. In addition, each data set was divided into micro-areas according to the corresponding relationship of location, and the mapping between multi-source heterogeneous micro-area data sets was established to analyze and quantify the correlation between material composition, structure and hardness. The conclusions are as follows: (1) the average size of the insoluble phase in the middle of the two materials is larger than that of the surface, but due to the existence of central segregation, the average area of the T4 insoluble phase showed an abnormal decrease; (2) there was positive micro-segregation of Al, Cr, Ti, and Zr elements, and negative micro-segregation of Zn, Cu, and Fe elements in the recrystallized grains of the T5 middle segregation zone; (3) the growth process of the insoluble phase was synchronous with the recrystallization proportion and the size of the recrystallized grains; (4) the composition segregation and recrystallized coarse grains were the main reasons for the formation of low hardness zone in T4 and T5 materials, respectively.
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Affiliation(s)
- Bing Han
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Dandan Sun
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
| | - Weihao Wan
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Caichang Dong
- Qingdao NCS Testing & Corrosion Protection Technology Co., Ltd., Qingdao 266071, China
| | - Dongling Li
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Lei Zhao
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
| | - Haizhou Wang
- Beijing Key Laboratory of Metal Materials Characterization, Central Iron & Steel Research Institute, Beijing 100081, China
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Wu F, Tian J, She Z, Liu Y, Wan W, Wen C. [Clinical features of children with Cunninghamella spp. infection: a case report and literature review]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:780-784. [PMID: 35673925 DOI: 10.12122/j.issn.1673-4254.2022.05.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We report a case of mucormycosis induced by Cunninghamella spp. infection in a ten-year-old girl with acute lymphoblastic leukemia, who developed fever and respiratory symptoms after chemotherapy and was diagnosed with invasive fungal disease. Peripheral blood DNA sequences were analyzed using metagenomic next-generation sequencing (mNGS), and by comparison with the Pathogens Metagenomics Database (PMDB), we identified Cunninghamella spp. with sequence number 514 as the pathogen. The patient was treated with amphotericin B combined with posaconazole and showed a favorable response. We searched Pubmed, Embase, CNKI, and Wanfang database for reports of cases of Cunninghamella spp. infection in children and retrieved 22 reported cases (including 12 males) with a median age of 13.5 (3-18) years. In these 22 cases, hematological malignancy was the most common underlying condition (19/22), and most of patients experienced an acute onset and rapid progression with respiratory symptoms (14/20) and fever (16/20) as the most common symptoms. CT imaging often showed unilateral lesions with varying imaging findings, including pulmonary nodules or masses, infiltrative changes, and pleural effusion. Definite diagnoses were established in 18 of the cases, and 4 had probable diagnoses; the lungs and skin were the most frequent organs compromised by the infection. A definite diagnosis of Cunninghamella spp. infection still relied on histopathological examination and fungal culture, but the molecular techniques including PCR and mNGS had shown potentials in the diagnosis. Almost all the cases received antifungal treatment after diagnosis (21/22), and 13 patients also underwent surgeries. Death occurred in 9 (42%) of the cases at a median of 19 (4-54) days after onset of the signs or symptoms. The patients receiving antifungal therapy combined with surgery had a high survival rate (9/13, 69%) than those with antifungal therapy alone (3/8, 37%). Invasive fungal disease is a common complication in immunoco-mpromised patients, but Cunninghamella spp. infection is rare and has a high mortality rate. In cases highly suspected of this disease, active diagnosis and early treatment are critical to improve the survival outcomes of the patients.
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Affiliation(s)
- F Wu
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - J Tian
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Z She
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Y Liu
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - W Wan
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - C Wen
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
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Yu Y, Ran Y, Zhan H, Wan W, Shi L, Li M, Wei X. The Importance of Genetic Isolation in Preserving the Gene Pool of Apis cerana in Fanjingshan Nature Reserve. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422020144] [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: 11/23/2022]
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10
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Ding L, Zhou R, Yuan Y, Yang H, Li J, Yu T, Liu C, Wang J, Li S, Gao H, Deng Z, Li N, Wang Z, Gong Z, Liu G, Xie J, Wang S, Rong Z, Deng D, Wang X, Han S, Wan W, Richter L, Huang L, Gou S, Liu Z, Yu H, Jia Y, Chen B, Dang Z, Zhang K, Li L, He X, Liu S, Di K. A 2-year locomotive exploration and scientific investigation of the lunar farside by the Yutu-2 rover. Sci Robot 2022; 7:eabj6660. [PMID: 35044796 DOI: 10.1126/scirobotics.abj6660] [Citation(s) in RCA: 5] [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: 11/02/2022]
Abstract
The lunar nearside has been investigated by many uncrewed and crewed missions, but the farside of the Moon remains poorly known. Lunar farside exploration is challenging because maneuvering rovers with efficient locomotion in harsh extraterrestrial environment is necessary to explore geological characteristics of scientific interest. Chang'E-4 mission successfully targeted the Moon's farside and deployed a teleoperated rover (Yutu-2) to explore inside the Von Kármán crater, conveying rich information regarding regolith, craters, and rocks. Here, we report mobile exploration on the lunar farside with Yutu-2 over the initial 2 years. During its journey, Yutu-2 has experienced varying degrees of mild slip and skid, indicating that the terrain is relatively flat at large scales but scattered with local gentle slopes. Cloddy soil sticking on its wheels implies a greater cohesion of the lunar soil than encountered at other lunar landing sites. Further identification results indicate that the regolith resembles dry sand and sandy loam on Earth in bearing properties, demonstrating greater bearing strength than that identified during the Apollo missions. In sharp contrast to the sparsity of rocks along the traverse route, small fresh craters with unilateral moldable ejecta are abundant, and some of them contain high-reflectance materials at the bottom, suggestive of secondary impact events. These findings hint at notable differences in the surface geology between the lunar farside and nearside. Experience gained with Yutu-2 improves the understanding of the farside of the Moon, which, in return, may lead to locomotion with improved efficiency and larger range.
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Affiliation(s)
- L Ding
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - R Zhou
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Yuan
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - J Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - T Yu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - C Liu
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - J Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Gao
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Deng
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - N Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Wang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Gong
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - G Liu
- Department of Aerospace Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
| | - J Xie
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - Z Rong
- Beijing Aerospace Control Center, Beijing 100094, China
| | - D Deng
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X Wang
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - S Han
- Beijing Aerospace Control Center, Beijing 100094, China
| | - W Wan
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - L Richter
- Large Space Structures GmbH, Hauptstrasse 1, D-85386 Eching, Germany
| | - L Huang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - S Gou
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - Z Liu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Jia
- China Academy of Space Technology, Beijing 100094, China
| | - B Chen
- China Academy of Space Technology, Beijing 100094, China
| | - Z Dang
- China Academy of Space Technology, Beijing 100094, China
| | - K Zhang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - L Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X He
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Liu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - K Di
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
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Chen C, Yang S, Jiang Z, Wan W, Zou H, Liang M. POS0884 THE ENHANCED LIVER FIBROSIS (ELF) SCORE AS A BIOMARKER OF SKIN FIBROSIS IN SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3648] [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: 11/04/2022]
Abstract
Background:Serum fibrotic markers for systemic sclerosis (SSc) remain limited. The Enhanced Liver Fibrosis (ELF) score, originally derived and validated in patients with chronic liver disease, is an algorithm combining 3 serum markers, known as procollagen type III amino terminal propeptide (PIIINP), tissue inhibitor of metalloproteinases 1 (TIMP-1), and hyaluronic acid (HA). The combined score was proved to be superior to the single components in reflecting the severity of liver fibrosis. However, the performance of ELF score and its components has not been fully validated in SSc.Objectives:To investigate PIIINP, TIMP-1, HA, and the combined algorithm ELF score as fibrotic markers for SSc skin involvement.Methods:Eighty SSc patients (44 dcSSc and 36 lcSSc), fulfilling the 2013 ACR/EULAR criteria with the absence of chronic liver diseases, were enrolled. Eighty age- and sex- matched healthy controls were also included. Serum PIIINP and HA levels were quantified by chemiluminescence immunoassay. Serum TIMP-1 levels were determined by enzyme-linked immunosorbent assay. The ELF score was calculated using the formula ELF score= 2.494 + 0.846*ln(HA) + 0.735*ln(PIIINP) + 0.391*ln(TIMP-1). Results were correlated with clinical profiles including modified Rodnan skin score (mRSS) and interstitial lung disease (ILD).Results:Compared with healthy controls, patients with SSc showed significantly elevated serum PIIINP (11.2±4.8 vs. 5.73±1.4μg/L, p<0.001), TIMP-I (123.7±78.6 vs. 67.8±26.5 ng/ml, p<0.001), and ELF score (10.5±0.9 vs. 9.7±0.4, P<0.001). Even higher levels of PIIINP, TIMP-1, and ELF score were observed in dcSSc patients, compared with lcSSc patients (p<0.001, p=0.024, p=0.003, respectively). No significant difference was found in the levels of serum HA between patients and controls. Strong correlations were observed between mRSS and ELF score (r=0.54, p<0.001), and between mRSS and PIIINP(r=0.62, p<0.001), whereas only weak correlations could be observed between mRSS and TIMP-1 (r=0.28, p=0.02), and between mRSS and HA (r=0.26, p=0.03). When stratified by ELF score, using cutoffs proposed for liver fibrosis and cirrhosis, SSc patients with ELF<9.8 showed the lowest mRSS on average, while patients with ELF>11.3 showed the highest (p<0.001). When stratified by serum PIIINP levels, using the 25th and 75th percentiles, SSc patients with serum PIIIINP levels<7.8μg/L showed the lowest mRSS on average, while patients with PIIINP>14.0μg/L showed the highest (p<0.001). Neither the ELF score nor its components showed significant difference between patients with and without ILD.Conclusion:The ELF score could be used for reflecting the severity of overall skin involvement in SSc, and serum PIIINP also increased in parallel with the increase of mRSS. Longitudinal prospective studies exploring ELF score or serum PIIINP as fibrotic markers and outcome measures of SSc are warranted.References:[1]Lichtinghagen R, Pietsch D, Bantel H, et al. The Enhanced Liver Fibrosis (ELF) score: Normal values, influence factors and proposed cut-off values. Journal of Hepatology. 2013; 59: 236-42.[2]Abignano G, Blagojevic J, Bissell LA, et al. European multicentre study validates enhanced liver fibrosis test as biomarker of fibrosis in systemic sclerosis. Rheumatology. 2019; 58: 254-59.Figure 1.Correlations of mRSS with ELF score (A) and serum PIIINP (B) and distribution of mRSS among different ELF (C) and PIIINP (D) ranges.Acknowledgements:The authors have no acknowledgements to declare.Disclosure of Interests:None declared
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Chen C, Yang S, Jiang Z, Wan W, Zou H, Liang M. POS0869 PREDICTIVE VALUE OF ANTI-INTERFERON-INDUCIBLE PROTEIN 16 ANTIBODIES FOR DIGITAL ULCERS OF SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3058] [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: 11/04/2022]
Abstract
Background:Interferon-inducible protein 16 (IFI-16) is constitutively expressed in vascular endothelial cells and can inhibit the proliferation of human endothelial cells and the formation of capillary-like structures in vitro. Anti-IFI-16 antibodies were reported in 21%-29% of patients with systemic sclerosis (SSc) and were associated with digital vascular events in a few retrospective studies.Objectives:To evaluate the presence and the clinical implication of anti-IFI-16 antibodies in Chinese SSc cohort, focusing on the associations with vasculopathy indexes, and to investigate the predictive value of anti-IFI-16 antibodies for the development of digital ulcers (DUs) in SSc prospectively.Methods:Patients with SSc presenting to our center between July 2018 and September 2018 were prospectively enrolled. Serum from 42 SSc patients and 42 age- and sex-matched healthy controls were analyzed for anti-IFI-16 antibodies by enzyme-linked immunosorbent assay (ELISA), and was considered positive if the optical density (OD) value was above the mean OD of controls plus two standard deviations. Tissue immunofluorescence was used to evaluate the expression of IFI16 in skin biopsy samples obtained from SSc patients and normal controls. At baseline, nailfold video-capillaroscopy was performed to assess nailfold capillary density of SSc patients. Power Doppler ultrasound was used to grade finger pulp blood flow (0-no observed flow; 1-decreased flow; 2-normal flow), and to measure ulnar and radial artery blood flow and resistive index (RI). All patients were followed up for 6 months to see whether they experienced new onset or recurrent DUs. The association of anti-IFI-16 antibodies with DUs was analyzed using logistic regression.Results:Of the 42 SSc patients, 8 (19.0%) were positive for anti-IFI-16 antibodies. Immunofluorescence of skin biopsy samples from SSc patients exhibited enhanced staining of IFI-16 in the dermis, and colocalization with endothelial marker CD31. SSc patients who were positive for anti-IFI-16 antibodies showed higher ulnar artery RI at baseline (0.95±0.09 vs. 0.86±0.09, p=0.015), while no significant differences were found for other vascular parameters, nor for clinical or demographic profiles. Within 6-month follow-up, 14 (33.3%) patients experienced new-onset or recurrent DUs. Univariate logistic regression revealed the presence of DUs at enrollment (p=0.009), anti-IFI-16 antibody (p=0.012), finger pulp blood flow (p=0.027), and ulnar artery RI (p=0.008) could be the predictors for the development of DUs. Multivariate analysis further identified DUs at enrollment (odds ratio [OR]: 10.85; 95% confidence interval [CI]: 1.61-73.18; p=0.014) and anti-IFI-16 antibody (OR: 15.00; 95% CI: 1.13-199.18; p=0.040) as independent risk factors. Among patients without DUs at enrollment, new-onset ulcers occurred in 80% (4/5) and 4.5% (1/22) of those with and without anti-IFI-16 antibody, respectively (p=0.001).Conclusion:Anti-IFI-16 antibody is associated with vasculopathy in SSc and could be used as a novel biomarker for indicating the development of DUs.References:[1]McMahan ZH, Shah AA, Vaidya D, et al. Anti-interferon-inducible protein 16 antibodies associate with digital gangrene in patients with Scleroderma. Arthritis Rheumatol. 2016; 68(5): 1262-71.[2]McMahan ZH, Cottrell TR, Wigley FM, et al. Autoantigens targeted in scleroderma patients with vascular disease are enriched in endothelial lineage cells. Arthritis Rheumatol. 2016; 68(10): 2540–49.Figure 1.Multivariate logistic analysis for new or recurrent digital ulcers.Acknowledgements:The authors would like to thank Doctor Yi Cheng for performing Power Doppler ultrasound assessment.Disclosure of Interests:None declared
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Zhang L, Sun Z, Fu X, Wan W, Ge J, Xia Y, Xu D, Nan F, Yu H, Zhang M, Li L, Li X, Li Z, Wang X, Chang Y, Yan J, Wu X, Zhou Z. THE SURVIVAL OF 2852 PATIENTS WITH LYMPHOMA: A SINGLE CENTER STUDY FROM CHINA. Hematol Oncol 2021. [DOI: 10.1002/hon.109_2881] [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: 11/10/2022]
Affiliation(s)
- L. Zhang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Sun
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Fu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - W. Wan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - J. Ge
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Y. Xia
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - D. Xu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - F. Nan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - H. Yu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - M. Zhang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - L. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Wang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Y. Chang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - J. Yan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Wu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Zhou
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
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Lin C, Wan W, Wei X, Chen J. H 2 Activation with Co Nanoparticles Encapsulated in N-Doped Carbon Nanotubes for Green Synthesis of Benzimidazoles. ChemSusChem 2021; 14:709-720. [PMID: 33226188 DOI: 10.1002/cssc.202002344] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/01/2020] [Indexed: 06/11/2023]
Abstract
Co nanoparticles (NPs) encapsulated in N-doped carbon nanotubes (Co@NC900 ) are systematically investigated as a potential alternative to precious Pt-group catalysts for hydrogenative heterocyclization reactions. Co@NC900 can efficiently catalyze hydrogenative coupling of 2-nitroaniline to benzaldehyde for synthesis of 2-phenyl-1H-benzo[d]imidazole with >99 % yield at ambient temperature in one step. The robust Co@NC900 catalyst can be easily recovered by an external magnetic field after the reaction and readily recycled for at least six times without any evident decrease in activity. Kinetic experiments indicate that Co@NC900 -promoted hydrogenation is the rate-determining step with a total apparent activation energy of 41±1 kJ mol-1 . Theoretical investigations further reveal that Co@NC900 can activate both H2 and the nitro group of 2-nitroaniline. The observed energy barrier for H2 dissociation is only 2.70 eV in the rate-determining step, owing to the presence of confined Co NPs in Co@NC900 . Potential industrial application of the earth-abundant and non-noble transition metal catalysts is also explored for green and efficient synthesis of heterocyclic compounds.
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Affiliation(s)
- Chuncheng Lin
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, No. 855, East Xingye Avenue, Panyu District, Guangzhou, 511443, P. R. China)
| | - Weihao Wan
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, No. 855, East Xingye Avenue, Panyu District, Guangzhou, 511443, P. R. China)
| | - Xueting Wei
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, No. 855, East Xingye Avenue, Panyu District, Guangzhou, 511443, P. R. China)
| | - Jinzhu Chen
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, No. 855, East Xingye Avenue, Panyu District, Guangzhou, 511443, P. R. China)
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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Xu F, Chen R, Ma C, Tang L, Wan W, You F, Chen L, Li J, Chen Z, Liang F. ELECTROACUPUNCTURE IMPROVES INSULIN SENSITIVITY IN HIGH-FAT DIET-INDUCED INSULIN RESISTANT RATS BY ACTIVATING SIRT1 AND GLUT4 IN QUADRICEPS FEMORIS. Acta Endocrinol (Buchar) 2020; 16:280-287. [PMID: 33363647 PMCID: PMC7748239 DOI: 10.4183/aeb.2020.280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVES To assess the effects of electroacupuncture (EA) at the Zusanli (ST36), Guanyuan (CV4), Zhongwan (CV12), and Fenglong (ST40) acupoints on sirtuin 1 (SIRT1) and glucose transporter type 4 (GLUT4) expression in high-fat diet (HFD)-induced insulin-resistant (IR) rats. METHODS Wistar rats were divided into normal control (NC), HFD, and HFD+EA groups. NC rats were fed a standard chow diet and did not receive EA. After being fed an HFD for eight weeks, rats in the HFD+EA group received EA at 2 Hz five times a week for eight weeks. Rats in the HFD group did not receive EA. RESULTS In HFD-induced IR rats, EA inhibited body weight increase and water intake, which were observed in HFD rats. EA had no effect on fasting blood glucose and postprandial blood sugar levels. Intraperitoneal insulin tolerance testing revealed that EA enhanced insulin sensitivity in HFD-induced IR rats. Compared with NC rats, SIRT1 and GLUT4 were downregulated in the quadriceps femoris of HFD-fed rats but were increased after eight weeks of EA stimulation. CONCLUSIONS EA enhanced HFD-induced insulin resistance by activating SIRT1 and GLUT4 in the quadriceps femoris. These results provide powerful evidence supporting the beneficial effects of EA on HFD-induced insulin resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - F. Liang
- Hubei University of Chinese Medicine, Department of Acupuncture and Moxibustion, Wuhan, China
- Wuhan, China
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Wang JG, Zhao XG, Wang XL, Liu MX, Wan W. Low expression of miR-1 promotes osteogenic repair of bone marrow mesenchymal stem cells by targeting TLR1. Eur Rev Med Pharmacol Sci 2020; 24:3492-3500. [PMID: 32329822 DOI: 10.26355/eurrev_202004_20808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Bone marrow mesenchymal stem cells (BMSCs) promote bone tissue repair. MiR-1 regulates myogenic and osteogenic differentiation of human adipose tissue stem cells. However, miR-1's effect on BMSCs osteogenesis is unclear. MATERIALS AND METHODS Rat BMSCs were isolated and divided into control group, miR-1 group, and si-miR-1 group respectively transfected with miR-1 plasmid and miR-1 siRNA followed by analysis of cell proliferation by MTT assay and Caspase 3 activity. The expression of osteogenic genes Runx2 and OPN was measured by Real Time-PCR. Healthy male Sprague-Dawley rats were separated into fracture group, NC group, and si-miR-1 group followed by analysis of bone mineral density, miR-1 level by Real Time-PCR, type I collagen, and BMP-2 by enzyme-linked immunosorbent assay (ELISA), and TLR1 expression by Western blot. RESULTS Transfection of miR-1 siRNA into BMSCs significantly downregulated miR-1 expression, promoted BMSCs cell proliferation, inhibited Caspase 3 activity, as well as promoted osteogenic genes Runx2 and OPN expression and decreased TLR1 expression (p<0.05). The upregulation of miR-1 expression significantly reversed the above changes. TLR1 is a target of miR-1. Downregulation of miR-1 expression in BMSCs of fractured rats significantly increased bone density and ALP activity, promoted type I collagen and BMP-2 expression, and decreased TLR1 expression (p<0.05). CONCLUSIONS The downregulation of miR-1 promotes BMSCs osteogenic differentiation via targeting TLR1, which promotes osteogenic differentiation and bone healing.
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Affiliation(s)
- J-G Wang
- Department of Joint Surgery, Hiser Medical Center of Qingdao, Qingdao, Shandong, China.
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18
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Wan W, Christensen NB, Sandvik AW, Tregenna-Piggott P, Nilsen GJ, Mourigal M, Perring TG, Frost CD, McMorrow DF, Rønnow HM. Temperature dependence of the [Formula: see text] anomaly in the excitation spectrum of the 2D quantum Heisenberg antiferromagnet. J Phys Condens Matter 2020; 32:374007. [PMID: 32050188 DOI: 10.1088/1361-648x/ab757a] [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: 06/10/2023]
Abstract
It is well established that in the low-temperature limit, the two-dimensional quantum Heisenberg antiferromagnet on a square lattice (2DQHAFSL) exhibits an anomaly in its spectrum at short-wavelengths on the zone-boundary. In the vicinity of the [Formula: see text] point the pole in the one-magnon response exhibits a downward dispersion, is heavily damped and attenuated, giving way to an isotropic continuum of excitations extending to high energies. The origin of the anomaly and the presence of the continuum are of current theoretical interest, with suggestions focused around the idea that the latter evidences the existence of spinons in a two-dimensional system. Here we present the results of neutron inelastic scattering experiments and Quantum Monte Carlo calculations on the metallo-organic compound Cu(DCOO)[Formula: see text]D2O (CFTD), an excellent physical realisation of the 2DQHAFSL, designed to investigate how the anomaly at [Formula: see text] evolves up to finite temperatures [Formula: see text]. Our data reveal that on warming the anomaly survives the loss of long-range, three-dimensional order, and that it is thus a robust feature of the two-dimensional system. With further increase of temperature the zone-boundary response gradually softens and broadens, washing out the [Formula: see text] anomaly. This is confirmed by a comparison of our data with the results of finite-temperature Quantum Monte Carlo simulations where the two are found to be in good accord. In the vicinity of the antiferromagnetic zone centre, there was no significant softening of the magnetic excitations over the range of temperatures investigated.
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Affiliation(s)
- W Wan
- Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
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19
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Chen X, Shen Q, Li Z, Wan W, Chen J, Zhang J. Metal-Free H 2 Activation for Highly Selective Hydrogenation of Nitroaromatics Using Phosphorus-Doped Carbon Nanotubes. ACS Appl Mater Interfaces 2020; 12:654-666. [PMID: 31808342 DOI: 10.1021/acsami.9b17582] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We reported that phosphorus-doped carbon nanotubes (P-CNTs), showing metal-like properties, can efficiently promote metal-free hydrogenation of nitrobenzene (1a) to aniline (2a) using molecular hydrogen (H2) as a reducing reagent under very mild conditions with a reaction temperature of only 50 °C. The kinetics of 1a hydrogenation over P-CNT reveals that the hydrogenation rate of 1a is a first-order dependence on the H2 pressure and the P-CNT loading level, and a zero-order dependence on 1a concentration, demonstrating the rate-determining step of H2 adsorption and activation over P-CNT. The activation energy of P-CNT-catalyzed 1a hydrogenation is 43 ± 3 kJ mol-1 with the turnover frequency around 3.60 ± 0.12 h-1 at 50 °C. In addition to 1a, the general applicability of the P-CNT-promoted metal-free hydrogenation process is further demonstrated by applying various functionalized nitroaromatics with wide industrial interest. The P-CNT shows both excellent yields and selectivities to hydrogenation with respect to reducible, labile, and strong leaving groups on the nitroaromatics molecules. The stability and reusability of the P-CNT demonstrate up to eight-time recycling without evident loss of activity and selectivity. In addition to hydrogenation, metal-free catalytic transfer hydrogenation of 1a is achieved with P-CNT using diverse hydrogen sources, including hydrazine hydrate (N2H4·H2O), carbon monoxide/water (CO/H2O), and formic acid/triethylamine (HCOOH/Et3N).
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Affiliation(s)
- Xuehua Chen
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
| | - Qiujuan Shen
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
| | - Zhijing Li
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
| | - Weihao Wan
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
| | - Jinzhu Chen
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Department of Chemical and Biological Engineering , Zhejiang University , 38 Zheda Road , Hangzhou 310027 , China
| | - Jiayan Zhang
- Guangdong Engineering and Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science , Jinan University , No. 601 Huangpu Avenue West , Tianhe District, Guangzhou 510632 , China
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Bao F, Hu K, Wan W, Tian L, Jing HM. [Efficacy of anti-CD19 CAR-T cell therapy in 10 refractory recurrent B cell malignancies]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:454-459. [PMID: 30032559 PMCID: PMC7342922 DOI: 10.3760/cma.j.issn.0253-2727.2018.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
目的 探讨抗CD19 CAR-T细胞治疗难治复发B细胞肿瘤的疗效和不良反应。 方法 2015年12月至2017年7月北京大学第三医院血液科收治的10例患者,包括难治复发的急性B淋巴细胞白血病(B-ALL)6例,难治复发的B细胞非霍奇金淋巴瘤(NHL)4例,采用抗CD19 CAR-T细胞治疗后观察治疗效果及不良反应。 结果 输注后第28天进行近期疗效评估,其中6例ALL患者4例(66.7%)完全缓解(CR),1例(16.7%)部分缓解(PR);总反应率(ORR)为83.3%。3例弥漫大B细胞淋巴瘤(DLBCL)患者1例达CR。1例套细胞淋巴瘤(MCL)患者大部分病灶消失,亦有顽固病灶呈进展状态。10例患者均发生细胞因子释放综合征(CRS),主要表现为发热;其中1例患者出现中枢神经系统症状,1例患者出现多脏器功能衰竭,经治疗不良反应均治愈。 结论 抗CD19 CAR-T细胞治疗难治复发B细胞血液系统肿瘤有效,不良反应可控。
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Affiliation(s)
- F Bao
- Department of Hematology, Peking University Third Hospital, Beijing 100083, China
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21
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Ivashko O, Horio M, Wan W, Christensen NB, McNally DE, Paris E, Tseng Y, Shaik NE, Rønnow HM, Wei HI, Adamo C, Lichtensteiger C, Gibert M, Beasley MR, Shen KM, Tomczak JM, Schmitt T, Chang J. Strain-engineering Mott-insulating La 2CuO 4. Nat Commun 2019; 10:786. [PMID: 30783084 PMCID: PMC6381167 DOI: 10.1038/s41467-019-08664-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 07/31/2018] [Accepted: 01/20/2019] [Indexed: 11/10/2022] Open
Abstract
The transition temperature Tc of unconventional superconductivity is often tunable. For a monolayer of FeSe, for example, the sweet spot is uniquely bound to titanium-oxide substrates. By contrast for La2-xSrxCuO4 thin films, such substrates are sub-optimal and the highest Tc is instead obtained using LaSrAlO4. An outstanding challenge is thus to understand the optimal conditions for superconductivity in thin films: which microscopic parameters drive the change in Tc and how can we tune them? Here we demonstrate, by a combination of x-ray absorption and resonant inelastic x-ray scattering spectroscopy, how the Coulomb and magnetic-exchange interaction of La2CuO4 thin films can be enhanced by compressive strain. Our experiments and theoretical calculations establish that the substrate producing the largest Tc under doping also generates the largest nearest neighbour hopping integral, Coulomb and magnetic-exchange interaction. We hence suggest optimising the parent Mott state as a strategy for enhancing the superconducting transition temperature in cuprates.
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Affiliation(s)
- O Ivashko
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
| | - M Horio
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
| | - W Wan
- Department of Physics, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| | - N B Christensen
- Department of Physics, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| | - D E McNally
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - E Paris
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Y Tseng
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - N E Shaik
- Institute of Physics, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - H M Rønnow
- Institute of Physics, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - H I Wei
- Department of Physics, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA
| | - C Adamo
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - C Lichtensteiger
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - M Gibert
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
| | - M R Beasley
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - K M Shen
- Department of Physics, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA
| | - J M Tomczak
- Institute of Solid State Physics, Vienna University of Technology, A-1040, Vienna, Austria
| | - T Schmitt
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - J Chang
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
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22
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Wang J, Li Y, Huang Z, Wan W, Zhang Y, Wang C, Cheng X, Ye F, Liu K, Fei G, Zeng M, Jin L. Neuromelanin-sensitive magnetic resonance imaging features of the substantia nigra and locus coeruleus in de novo
Parkinson's disease and its phenotypes. Eur J Neurol 2018. [PMID: 29520900 DOI: 10.1111/ene.13628] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- J. Wang
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - Y. Li
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - Z. Huang
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - W. Wan
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - Y. Zhang
- MR Research; GE Healthcare; Shanghai China
| | - C. Wang
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - X. Cheng
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - F. Ye
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - K. Liu
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - G. Fei
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - M. Zeng
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - L. Jin
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
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Scholl A, Marcus MA, Doran A, Nasiatka JR, Young AT, MacDowell AA, Streubel R, Kent N, Feng J, Wan W, Padmore HA. Hartmann characterization of the PEEM-3 aberration-corrected X-ray photoemission electron microscope. Ultramicroscopy 2018; 188:77-84. [PMID: 29554489 DOI: 10.1016/j.ultramic.2018.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/06/2018] [Accepted: 03/09/2018] [Indexed: 11/24/2022]
Abstract
Aberration correction by an electron mirror dramatically improves the spatial resolution and transmission of photoemission electron microscopes. We will review the performance of the recently installed aberration corrector of the X-ray Photoemission Electron Microscope PEEM-3 and show a large improvement in the efficiency of the electron optics. Hartmann testing is introduced as a quantitative method to measure the geometrical aberrations of a cathode lens electron microscope. We find that aberration correction leads to an order of magnitude reduction of the spherical aberrations, suggesting that a spatial resolution of below 100 nm is possible at 100% transmission of the optics when using x-rays. We demonstrate this improved performance by imaging test patterns employing element and magnetic contrast.
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Affiliation(s)
- A Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA.
| | - M A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A Doran
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - J R Nasiatka
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A T Young
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A A MacDowell
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - R Streubel
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - N Kent
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA; Department of Physics, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - J Feng
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - W Wan
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - H A Padmore
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
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Abstract
This review presents various TEM techniques including electron diffraction, high-resolution TEM and scanning TEM imaging, and electron tomography and their applications for structure characterization of zeolite materials.
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Affiliation(s)
- W. Wan
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - J. Su
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - X. D. Zou
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - T. Willhammar
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
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Clabbers MTB, van Genderen E, Wan W, Wiegers EL, Gruene T, Abrahams JP. Protein structure determination by electron diffraction using a single three-dimensional nanocrystal. Acta Crystallogr D Struct Biol 2017; 73:738-748. [PMID: 28876237 PMCID: PMC5586247 DOI: 10.1107/s2059798317010348] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 07/12/2017] [Indexed: 11/11/2022] Open
Abstract
Three-dimensional nanometre-sized crystals of macromolecules currently resist structure elucidation by single-crystal X-ray crystallography. Here, a single nanocrystal with a diffracting volume of only 0.14 µm3, i.e. no more than 6 × 105 unit cells, provided sufficient information to determine the structure of a rare dimeric polymorph of hen egg-white lysozyme by electron crystallography. This is at least an order of magnitude smaller than was previously possible. The molecular-replacement solution, based on a monomeric polyalanine model, provided sufficient phasing power to show side-chain density, and automated model building was used to reconstruct the side chains. Diffraction data were acquired using the rotation method with parallel beam diffraction on a Titan Krios transmission electron microscope equipped with a novel in-house-designed 1024 × 1024 pixel Timepix hybrid pixel detector for low-dose diffraction data collection. Favourable detector characteristics include the ability to accurately discriminate single high-energy electrons from X-rays and count them, fast readout to finely sample reciprocal space and a high dynamic range. This work, together with other recent milestones, suggests that electron crystallography can provide an attractive alternative in determining biological structures.
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Affiliation(s)
- M. T. B. Clabbers
- Center for Cellular Imaging and NanoAnalytics (C-CINA), Biozentrum, Basel University, Mattenstrasse 26, CH-4058 Basel, Switzerland
| | - E. van Genderen
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
| | - W. Wan
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - E. L. Wiegers
- Leiden Institute of Physics, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
| | - T. Gruene
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
| | - J. P. Abrahams
- Center for Cellular Imaging and NanoAnalytics (C-CINA), Biozentrum, Basel University, Mattenstrasse 26, CH-4058 Basel, Switzerland
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
- Leiden Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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Yang P, Jing HM, Zhao W, Hu K, Dong F, Li QH, Wan W, Tian L, Wang JJ, Ke XY. [Analysis of survival and treatment outcome of young patients with high-risk diffuse large B cell lymphoma]. Zhonghua Yi Xue Za Zhi 2017; 97:2485-2490. [PMID: 28835053 DOI: 10.3760/cma.j.issn.0376-2491.2017.32.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze clinical feature and treatment outcome of young patients with high-risk diffuse large B cell lymphoma. Methods: A total of 122 young patients with high-risk diffuse large B cell lymphoma who were treated in Third Hospital of Peking University during the period from January 2000 to April 2015 were retrospectively analyzed, and the clinical features, laboratory data were included in Kaplan-Meier and prognostic analysis. Results: In our center, the incidence of young high-risk DLBCL was 27.1% in all DLBCL patients, median age was 44.0 years, 99.2% patients belong to Ⅲ and Ⅳstage, 50% patients had more than two extranodal organs involvement, and the higher proliferation index(Ki-67≥80%) was present in 63.1% of patients, Immunohistochemistry showed that 36.7% patients in 30 cases were double-expressed DLBCL. The overall response rate(ORR) for the whole group was 79.4%, the complete response rate was 39.7% , the 3, 5-year progression free survival rate was 59.8% and 57.0%, the 3, 5-year overall survival rate was 63.5% and 57.8%, respectively. 44.3% patients were refractory-relapsed DLBCL. Rituximab can improve the survival of patients and 3-year overall survival rate was 75.2% vs 46.1%(P=0.001). High-dose chemotherapy was superior to CHOP regimen which 3-year overall survival rate was 84.6% vs 54.1%(P=0.006). Compared with chemotherapy group , auto-hematopoietic stem cell transplantation can improve prognosis of patients and 3-year overall survival rate was 93.4% vs 48.3%(P<0.001). The level of Ki-67, B symptom, ECOG score, the level of LDH, WBC and albumin, ESR level, anemia, rituximab therapy, initial regimens, ASCT, initial treatment outcome and refractory-relapsed were predictive of overall survival. Multivariate analysis indicated that albumin level(RR=5.462, P=0.019), initial treatment outcome(RR=34.863, P<0.001) and refractory-relapsed (RR=24.374, P<0.001)were independent prognostic risk factors. Conclusions: Young patients with high-risk DLBCL were highly aggressive in clinical and pathological features . Rituximab and high-dose regimens can improve the survival of patients.
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Affiliation(s)
- P Yang
- Department of Hematology, Third Hospital of Peking University, Beijing 100191, China
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Bear HD, Wan W, Robidoux A, Rubin P, Limentani S, White RL, Granfortuna J, Hopkins JO, Oldham D, Rodriguez A, Sing AP. Abstract P2-10-04: Using the 21-gene assay from core needle biopsies to choose neoadjuvant therapy for breast cancer: A multi-center trial. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-10-04] [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
Neoadjuvant systemic therapy (NST) can facilitate breast conserving surgery (BCS) for large cancers. While hormone receptor positive (HR+) cancers respond to neoadjuvant chemotherapy (NCT), pathologic complete responses (pCR) are unlikely. Neoadjuvant hormonal therapy (NHT) may make BCS possible with less toxicity than NCT. We hypothesized that the Oncotype Dx® 21-gene Recurrence Score (RS), could guide the decision to treat with NHT versus NCT to facilitate BCS. This hypothesis is based on the ability of the RS to identify ER+ patients (pts) likely to benefit from adjuvant CT vs unlikely to benefit, as well as prior studies showing that pts with a low RS have no pCRs when receiving NCT (Yardley, et al 2015).
Methods: This prospective multi-center study enrolled pts with HR+, HER2-negative, invasive breast cancers not suitable for BCS (size ≥ 2 cm). Diagnosis was made by core needle biopsy (bx). Tissue blocks from the bx's were sent to Genomic Health for RS testing. Pts whose tumors had a RS < 11 were to receive NHT; pts with RS >25 tumors were to receive NCT; pts with midrange RS of 11-25 were randomized to NHT or NCT.
The primary objective was the feasibility of randomizing pts with RS values 11-25 between NHT and NCT. The primary endpoint was whether 1/3 or more of randomized pts would refuse assigned treatment. Secondary endpoints included: clinical partial and complete response (cPR, cCR) rates, overall clinical response rates (CR), pCR in the breast, pCR in the breast and nodes and successful BCS. One-sample binomial test was used to compare the observed refusal rate with 1/3, along with its 95% CI. Fisher's exact test, logistic regression (for a binary endpoint), and/or ordinal regression (for an ordinal endpoint) were used to compare the 4 treatment groups for secondary endpoints.
Results: Seven US and Canadian centers enrolled 64 pts; 5 were excluded (1 delay in RS result, 1 lost block, 1 HR testing discrepancy, 2 not eligible). Of 33 pts with RS 11-25, 5 (15%; 95% CI =2.9% - 27.4%) refused assignment to NCT (2 chose NHT and finished the study). This was significantly lower than the 33% target (binomial test, p=0.0292). Results for other endpoints are shown in the Table (according to treatment received); the total number of pts for the analyses is 55; 1 pt had missing data for clinical response.
Results According to TreatmentTreatment GroupRS<11 NHTRS 11-25 NHTRS 11-25 NCTRS>25 NCTOverall PNN=12N=18N=11N=14 cCR8.3%22.2%36.4%28.6%0.0422cPR75%27.8%36.4%64.3% CR (cCR + cPR)83.3%50%72.7%92.9%0.0490pCR Breast8.3%6%021.4%NSpCR Breast + Nodes00014.3%NSSuccessful BCS75%72.2%63.6%57.1%NS
Conclusions:This pilot showed the feasibility of using the RS to guide NST, with only a 15% refusal rate of randomly assigned treatment. Of greater interest is the finding that pts with a RS <11 had a high CR rate with NHT and that pts with a RS 11-25 who received NHT had a similar rate of BCS success as the pts with RS <11. Conversely, pts with RS>25 treated with NCT had the highest CR (cCR + pCR) and pCR rates. These results demonstrate that conducting a similarly designed larger trial is feasible and suggests that for pts with a low RS, NHT is a potentially effective strategy.
Citation Format: Bear HD, Wan W, Robidoux A, Rubin P, Limentani S, White, Jr. RL, Granfortuna J, Hopkins JO, Oldham D, Rodriguez A, Sing AP. Using the 21-gene assay from core needle biopsies to choose neoadjuvant therapy for breast cancer: A multi-center trial [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-10-04.
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Affiliation(s)
- HD Bear
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - W Wan
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - A Robidoux
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - P Rubin
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - S Limentani
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - RL White
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - J Granfortuna
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - JO Hopkins
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - D Oldham
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - A Rodriguez
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - AP Sing
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
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28
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Abstract
In addition to its roles in embryonic development, Growth and Differentiation Factor 11 (GDF 11) has recently drawn much interest about its roles in other processes, such as aging. GDF 11 has been shown to play pivotal roles in the rescue of the proliferative and regenerative capabilities of skeletal muscle, neural stem cells and cardiomyocytes. We would be remiss not to point that some controversy exists regarding the role of GDF 11 in biological processes and whether it will serve as a therapeutic agent. The latest studies have shown that the level of circulating GDF 11 correlates with the outcomes of patients with cardiovascular diseases, cancer and uremia. Based on these studies, GDF 11 is a promising candidate to serve as a novel biomarker of diseases. This brief review gives a detailed and concise view of the regulation and functions of GDF 11 and its roles in development, neurogenesis and erythropoiesis as well as the prospect of using this protein as an indicator of cardiac health and aging.
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Affiliation(s)
- A Jamaiyar
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA; School of Biomedical Sciences, Kent State University, Kent, OH, USA
| | - W Wan
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA; Department of Cardiology, Renmin Hospital of Wuhan University, Hubei, China
| | - D M Janota
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - M K Enrick
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - W M Chilian
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - L Yin
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.
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29
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Abstract
Development of advanced analytical techniques is essential for the identification of water oxidation catalysts together with mechanistic studies.
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Affiliation(s)
- J. Li
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - R. Güttinger
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - R. Moré
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - F. Song
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
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Anderson J, Wan W, Kaplan B, Myers J, Fields E. Changing Paradigm in Pancreatic Cancer: From Adjuvant to Neoadjuvant Chemoradiation. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.997] [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: 10/20/2022]
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31
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Nabavizadeh R, Abbassi M, Wan W, Grob B, Fields E. Underuse and Potential Detrimental Effect of Radiation Therapy in the Management of Ureteral Carcinoma. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1289] [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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32
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Abstract
Cryo-electron tomography (cryo-ET) allows 3D volumes to be reconstructed from a set of 2D projection images of a tilted biological sample. It allows densities to be resolved in 3D that would otherwise overlap in 2D projection images. Cryo-ET can be applied to resolve structural features in complex native environments, such as within the cell. Analogous to single-particle reconstruction in cryo-electron microscopy, structures present in multiple copies within tomograms can be extracted, aligned, and averaged, thus increasing the signal-to-noise ratio and resolution. This reconstruction approach, termed subtomogram averaging, can be used to determine protein structures in situ. It can also be applied to facilitate more conventional 2D image analysis approaches. In this chapter, we provide an introduction to cryo-ET and subtomogram averaging. We describe the overall workflow, including tomographic data collection, preprocessing, tomogram reconstruction, subtomogram alignment and averaging, classification, and postprocessing. We consider theoretical issues and practical considerations for each step in the workflow, along with descriptions of recent methodological advances and remaining limitations.
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Affiliation(s)
- W Wan
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - J A G Briggs
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
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33
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Wan W, Hawkins C, Hemingway J, Hughes D, Duszak R. Enteral access: evolving roles of radiologists and other providers nationally over two decades. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.463] [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] Open
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34
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Yan LL, Wan W, Chen L, Zhou F, Gong SJ, Tong X, Feng M. Exploring structural phase transitions of ion crystals. Sci Rep 2016; 6:21547. [PMID: 26865229 PMCID: PMC4749997 DOI: 10.1038/srep21547] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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: 11/10/2015] [Accepted: 01/27/2016] [Indexed: 11/09/2022] Open
Abstract
Phase transitions have been a research focus in many-body physics over past decades. Cold ions, under strong Coulomb repulsion, provide a repealing paradigm of exploring phase transitions in stable confinement by electromagnetic field. We demonstrate various conformations of up to sixteen laser-cooled (40)Ca(+) ion crystals in a home-built surface-electrode trap, where besides the usually mentioned structural phase transition from the linear to the zigzag, two additional phase transitions to more complicated two-dimensional configurations are identified. The experimental observation agrees well with the numerical simulation. Heating due to micromotion of the ions is analysed by comparison of the numerical simulation with the experimental observation. Our investigation implies very rich and complicated many-body behaviour in the trapped-ion systems and provides effective mechanism for further exploring quantum phase transitions and quantum information processing with ultracold trapped ions.
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Affiliation(s)
- L. L. Yan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - W. Wan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - L. Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - F. Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - S. J. Gong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - X. Tong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - M. Feng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
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35
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Wan W. 506P Simulation modeling of lung cancer screening cost-effectiveness analysis. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv535.01] [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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36
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Kim JY, Kim JW, Wan W. Design of in-flight fragment separator using high-power primary beams in the energy of a few hundred MeV/u. Rev Sci Instrum 2015; 86:073302. [PMID: 26233367 DOI: 10.1063/1.4923284] [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
An in-flight fragment separator usually requires large acceptance and high momentum resolution to minimize the loss of a rare isotope beam of interest produced at a thin target, which is especially important when (238)U fission reactions in the energy of 200 MeV/u are used. The production target and beam dump are located in the pre-separator, where a beam power of up to 400 kW is dissipated. The area is surrounded by thick radiation shielding walls, which result in long drift spaces between adjacent magnetic components at various locations and an asymmetrical layout. Efforts have been made to minimize non-linear effects in the pre-separator beam optics with trials of different separator configurations and correction schemes using COSY Infinity and GICOSY. The main separator is configured to be mirror symmetric such that correction with hexapole and octupole coils can be more readily applied. The separator configuration was finalized to allow the facility design to proceed and the key components including superconducting magnets have been designed and prototyped. In addition, the separator design has been evaluated using LISE++ including a set of wedge degraders at dispersive focal planes to improve the yield and purity of selected isotope beam.
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Affiliation(s)
- J Y Kim
- Institute for Basic Science, Yuseong, Daejeon 305-811, South Korea
| | - J W Kim
- Institute for Basic Science, Yuseong, Daejeon 305-811, South Korea
| | - W Wan
- Lawrence Berkeley Laboratory, Berkeley, California 94720, USA
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37
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Wan W, Xu X, Zhao DB, Pang YF, Wang YX. Polymorphisms of uric transporter proteins in the pathogenesis of gout in a Chinese Han population. Genet Mol Res 2015; 14:2546-50. [PMID: 25867401 DOI: 10.4238/2015.march.30.13] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, we analyzed single nucleotide polymorphisms (SNP) in urate transporter genes to examine the pathogenesis of gout. We conducted a 1:1-matched case-control study that included 110 patients with acute gout attacks as the patient group and 110 healthy age- and gender-matched subjects as the control group. Clinical parameters were recorded and blood biochemistry tests were conducted for both groups. Multivariate logistic regression analysis was used to analyze the data. Hyperuricemia, hypercholesterolemia, and hypertriglyceridemia were found to be the main risk factors for the onset of gout, with relative risks of 29.2 (P < 0.001), 25.5 (P = 0.003), and 11.2 (P < 0.001). For all detected SNP, rs2231142, located in ABCG2, showed the largest frequency differences for the G/G, G/T, and T/T genotypes between groups: the distribution of these genotypes in the case group was 22, 49, and 26 individuals, respectively, and was 54, 38, and 9 individuals, respectively, in the control group. There was a statistically significant difference between the 2 groups (P < 0.001) and the odds ratio was 7.091 (95% confidence interval = 2.867-17.541). Other SNPs (rs1165196, rs1165205, rs1183201, rs17300741, rs2078267, rs2242206, rs3733591, and rs9358856) showed no significant difference between the groups (P > 0.05). The risk factors of gout were hyperuricemia, hypercholesterolemia, hypertriglyceridemia, and the T/T genotype of the rs2231142 locus in the ABCG2 gene; expression of the G/G genotype may be a protective factor against gout development.
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Affiliation(s)
- W Wan
- Department of Rheumatology and Immunology, Shanghai Hospital of Second Military Medical University, Shanghai, China
| | - X Xu
- Department of Rheumatology and Immunology, Shanghai Hospital of Second Military Medical University, Shanghai, China
| | - D B Zhao
- Department of Rheumatology and Immunology, Shanghai Hospital of Second Military Medical University, Shanghai, China
| | - Y F Pang
- Department of Rheumatology and Immunology, Shanghai Hospital of Second Military Medical University, Shanghai, China
| | - Y X Wang
- Department of Rheumatology and Immunology, Shanghai Hospital of Second Military Medical University, Shanghai, China
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Wen C, Wan W, Li FH, Tang D. Restoring defect structures in 3C-SiC/Si (001) from spherical aberration-corrected high-resolution transmission electron microscope images by means of deconvolution processing. Micron 2015; 71:22-31. [PMID: 25637810 DOI: 10.1016/j.micron.2014.12.008] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/28/2014] [Accepted: 12/28/2014] [Indexed: 10/24/2022]
Abstract
The [110] cross-sectional samples of 3C-SiC/Si (001) were observed with a spherical aberration-corrected 300 kV high-resolution transmission electron microscope. Two images taken not close to the Scherzer focus condition and not representing the projected structures intuitively were utilized for performing the deconvolution. The principle and procedure of image deconvolution and atomic sort recognition are summarized. The defect structure restoration together with the recognition of Si and C atoms from the experimental images has been illustrated. The structure maps of an intrinsic stacking fault in the area of SiC, and of Lomer and 60° shuffle dislocations at the interface have been obtained at atomic level.
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Affiliation(s)
- C Wen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Science, Southwest University of Science and Technology, Mianyang 621010, China
| | - W Wan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - F H Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - D Tang
- FEI Company, Achtseweg Noord 5, 5651 GG Eindhoven, The Netherlands
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Feng J, Nasiatka J, Wan W, Vecchione T, Padmore HA. A novel system for measurement of the transverse electron momentum distribution from photocathodes. Rev Sci Instrum 2015; 86:015103. [PMID: 25638118 DOI: 10.1063/1.4904930] [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: 10/21/2014] [Accepted: 12/08/2014] [Indexed: 06/04/2023]
Abstract
The transverse momentum of electrons produced by a photocathode contributes significantly to the performance of several different types of accelerator-based light sources, such as Free Electron Lasers, as well as systems designed for ultrafast electron diffraction and dynamic transmission electron microscopy. Minimization of the transverse emittance from photocathodes is the subject of intensive research, and therefore measurement of this parameter is of great importance. Here, we describe a simple system that offers real time measurements of transverse emittance and can be easily integrated into the photocathode fabrication process.
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Affiliation(s)
- J Feng
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J Nasiatka
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - W Wan
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - T Vecchione
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - H A Padmore
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Abstract
We report a dopamine-based crosslinker-conjugated gelatin/polycaprolactone nanofibrous sheet. The nanosheet was then employed to treat stomach incisions without sutures during surgery.
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Affiliation(s)
- J. Jiang
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
- Department of Biochemistry and Medical Genetics
| | - W. Wan
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
| | - L. Ge
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
| | - S. Bu
- Jiangsu Province Hospital Affiliated with Nanjing Medical University
- Nanjing 210029
- China
| | - W. Zhong
- Department of Biosystem Engineering
- University of Manitoba
- Canada
| | - M. Xing
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
- Department of Biochemistry and Medical Genetics
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Tarawneh H, Steier C, Falcone R, Robin D, Nishimura H, Sun C, Wan W. ALS-II, a Potential Soft X-ray, Diffraction Limited Upgrade of the Advanced Light Source. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/493/1/012020] [Citation(s) in RCA: 3] [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: 11/11/2022]
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Steier C, Madur A, Bailey B, Berg K, Biocca A, Black A, Casey P, Colomb D, Gunion B, Li N, Marks S, Nishimura H, Pappas C, Petermann K, Portmann G, Prestemon S, Rawlins A, Robin D, Rossi S, Scarvie T, Schlueter R, Sun C, Tarawneh H, Wan W, Williams E, Yin L, Zhou Q, Jin J, Zhang J, Chen C, Wen Y, Wu J. Completion of the Brightness Upgrade of the ALS. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/493/1/012030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Vu HN, O'Connor PW, Shoemaker RR, Wan W, Fratkin MJ, Bear HD. Abstract P1-01-17: Sentinel node biopsy for breast cancer: Intraoperative injection of radiocolloid. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p1-01-17] [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
INTRODUCTION. Preoperative injection of radiocolloid for axillary sentinel node biopsy for breast cancer is visibly uncomfortable for many patients. We sought to determine whether injection of the radiocolloid once the patient has been anesthetized would be reliable for sentinel lymph node identification when compared to preoperative injection.
METHODS. A cohort of patients with breast cancer who underwent intraoperative injection of radiocolloid was compared to those who received their injection preoperatively. All injections employed 1mCi 0.5 ml of filtered (0.22 micron) Tc-99m sulfur colloid. All operative surgeons directed injections into the retroareolar tissue; some also intradermally directly over the tumor.
RESULTS. 904 sentinel node biopsy procedures were performed in the six years study period. 759 sentinel node biopsies were analyzed, 664 with preoperative injection of radiocolloid for localization and ninety-five with intraoperative injection. The average age of the patients was 56.8 years: 57.3 years in the preoperative injection group and 53.8 years in the intraoperative injection group. 753 of the 759 patients were women.
Sentinel Node Identification. The overall sentinel lymph node identification rate was similar for the two groups: 94.1% for the preoperative injection group and 93.5% for the intraoperative injection group (P = NS). The identification rate remained equivalent for both groups when analyzed by T stage of the tumor. Similarly, the average number of lymph nodes removed did not differ between preoperative vs. intraoperative injection: 2.66 nodes and 2.55 nodes, respectively.
Sentinel Node Positivity. The overall rate of positive sentinel nodes was also similar for the two groups, 24.7% for the preoperative injection group and 26.4% for the intraoperative injection group (P = NS). When analyzed by T stage, the positivity rate remained similar and not statistically significant. T1 tumors were 21.6% positive in the preoperative group versus 23.9% in the intraoperative group, and T2 tumors were 40.1% vs. 37.0%, respectively.
DISCUSSIONS. Our sentinel lymph node identification rate of 93.5% for the intraoperative injection group appears similar to that of the published literature (96-100%). Our study also showed no statistical difference in positive sentinel node biopsy between preoperative injection (24.7%) and intraoperative injection (26.2%) and is comparable to that of others When analyzed by T stage, our study had 23.9% positive sentinel node biopsies for T1, and 37% for T2 with intraoperative injection.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P1-01-17.
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Affiliation(s)
- HN Vu
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
| | - PW O'Connor
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
| | - RR Shoemaker
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
| | - W Wan
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
| | - MJ Fratkin
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
| | - HD Bear
- Virginia Commonwealth University, Richmond, VA; Wayne State University Detroit Medical Center, Detroit, MI
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Ramos C, Urdaneta A, Wan W, Chang M, Song S. Bilateral Neck Irradiation Confers a Higher Risk of Developing Hypothyroidism in Patients With Head-and-Neck Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1272] [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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Tromp R, Hannon J, Wan W, Berghaus A, Schaff O. A new aberration-corrected, energy-filtered LEEM/PEEM instrument II. Operation and results. Ultramicroscopy 2013; 127:25-39. [DOI: 10.1016/j.ultramic.2012.07.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Li RK, To H, Andonian G, Feng J, Polyakov A, Scoby CM, Thompson K, Wan W, Padmore HA, Musumeci P. Surface-plasmon resonance-enhanced multiphoton emission of high-brightness electron beams from a nanostructured copper cathode. Phys Rev Lett 2013; 110:074801. [PMID: 25166375 DOI: 10.1103/physrevlett.110.074801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Indexed: 06/03/2023]
Abstract
We experimentally investigate surface-plasmon assisted photoemission to enhance the efficiency of metallic photocathodes for high-brightness electron sources. A nanohole array-based copper surface was designed to exhibit a plasmonic response at 800 nm, fabricated using the focused ion beam milling technique, optically characterized and tested as a photocathode in a high power radio frequency photoinjector. Because of the larger absorption and localization of the optical field intensity, the charge yield observed under ultrashort laser pulse illumination is increased by more than 100 times compared to a flat surface. We also present the first beam characterization results (intrinsic emittance and bunch length) from a nanostructured photocathode.
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Affiliation(s)
- R K Li
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - H To
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - G Andonian
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - J Feng
- Advanced Light Source Division, LBNL, Berkeley, California 94720, USA
| | - A Polyakov
- Advanced Light Source Division, LBNL, Berkeley, California 94720, USA
| | - C M Scoby
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - K Thompson
- Advanced Light Source Division, LBNL, Berkeley, California 94720, USA
| | - W Wan
- Advanced Light Source Division, LBNL, Berkeley, California 94720, USA
| | - H A Padmore
- Advanced Light Source Division, LBNL, Berkeley, California 94720, USA
| | - P Musumeci
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
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Moghanaki D, Koontz B, Karlin J, Wan W, Mukhopadhay N, Hagan M, Anscher M. Elective Pelvic Lymph Node Irradiation, Without Androgen Deprivation Therapy, During Postprostatectomy Salvage Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.477] [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: 10/27/2022]
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Wen C, Liang Q, Yi Z, Wan W. Erdheim-Chester disease in a child. W INDIAN MED J 2012; 61:834-837. [PMID: 23757907] [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: 06/02/2023]
Abstract
Erdheim-Chester disease (ECD) is a rare systemic non-Langerhans histiocytosis that affects multiple organ systems. It occurs more often in adults, and paediatric ECD is extremely rare. The diagnosis of ECD can be established based on clinical presentations and imaging but the final diagnosis should be based on biopsy. Treatment of ECD has involved the use of corticosteroids, radiotherapy, chemotherapy, surgery and haematopoietic stem cell transplantation, yet the efficacy of these treatments is difficult to determine. At present, it is thought that the treatment of interferon-alpha (IFN-alpha) is safe and effective for ECD. Herein, we report on an 11-year old girl who was admitted to hospital because of systemic bone pain and limping, and the final diagnosis of ECD was based on evidence provided by her clinical presentation, imaging and biopsy of a lesion of the right ilium. The patient was treated with subcutaneous IFN-alpha at a dosage of 3 x 10(6) units three times weekly for 19 months. We thought that the treatment of IFN-alpha was safe and effective for the girl's clinical manifestations, and IFN-alpha might be a valuable first-line therapy for paediatric ECD.
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Affiliation(s)
- C Wen
- Department of Paediatrics, Xiangya Second Hospital of Central South University, Changsha City, China.
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Chen H, Liu L, Wan W, Sun J. Crystal structure study for nano-sized zeolites with rotation electron diffraction. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312098005] [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: 11/10/2022] Open
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