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Li Y, Yan C, Wang E, Xu WW. Proposed Structural Model for Chiral Au 40(SC 2H 4Ph) 24 Nanoclusters. J Phys Chem Lett 2024; 15:2241-2246. [PMID: 38380809 DOI: 10.1021/acs.jpclett.4c00130] [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: 02/22/2024]
Abstract
The structural configuration of thiolate-protected gold nanoclusters plays a pivotal role in elucidating the correlation between their structure and properties, comprehending their stability, and guiding experimental synthesis. In this study, utilizing the grand unified model and the ring model, we employed an innovative strategy of fusing triangular Au3 and tetrahedral Au4 elementary blocks by sharing a gold atom to design the gold core, predicting the structure of the Au40(SR)24 nanoclusters. Density functional theory calculations indicate that with the protective ligands simplified to methyl groups the energy of the predicted Au40(SR)24 is 0.45 eV lower than that of the experimentally reported Au40(o-MBT)24 nanoclusters, implying its substantial stability. Furthermore, the calculated UV absorption spectrum and circular dichroism spectrum of predicted Au40(SR)24 are consistent with the experimental results of Au40(SC2H4Ph)24 nanoclusters, suggesting that the predicted structure is a likely candidate for the structure of Au40(SC2H4Ph)24 nanoclusters.
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Affiliation(s)
- Yanshuang Li
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Chaoqiang Yan
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Wen Wu Xu
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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Liu C, Li Y, He Z, Yang Y, Wu C, Fan W, Xu WW, Li MB. Reduction-Oxidation Cascade Strategy for Reforming a Au 13-Kerneled Gold Thiolate Nanocluster. J Phys Chem Lett 2023; 14:11558-11564. [PMID: 38096134 DOI: 10.1021/acs.jpclett.3c03021] [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: 12/29/2023]
Abstract
Gold nanoclusters protected by thiolate ligands are ideal models for investigating the structure-property correlation of nanomaterals. Introducing relatively weak coordinating ligands into gold thiolate nanoclusters and thus reforming their structures is beneficial for further releasing their activities. However, controlling the selectivity of the process is a challenging task. In this work, we report a cascade strategy for deeply and purposefully reforming the structures of gold thiolate nanoclusters, exemplified by a Au13-kerneled Au23 nanocluster. Specifically, weakly coordinated triphenylphosphine was utilized to reduce (activate) the surface of Au23, enabling its further structural reformation by the following oxidation step. A structurally distinctive Au20 nanocluster was obtained based on this reduction-oxidation cascade strategy. Mechanism studies reveal that both the reduction and oxidation steps and their working sequence are critical for the transformation. Theoretical and experimental results all indicate that the deep structural reformation results in the evolution of the electronic and photoluminescent properties of the gold thiolate nanocluster.
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Affiliation(s)
- Chang Liu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China
| | - Yanshuang Li
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P.R. China
| | - Zongbing He
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China
| | - Ying Yang
- College of Materials and Chemical Engineering, West Anhui University, Lu'an, Anhui 237015, P.R. China
| | - Chao Wu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China
| | - Weigang Fan
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P.R. China
| | - Man-Bo Li
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China
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Xu T, Wang E, Liu S, Wei Z, Yin P, Sun J, Xu WW, Song Y. Large-scale synthesis, mechanism, and application of a luminescent copper hydride nanocluster. Dalton Trans 2023. [PMID: 38010928 DOI: 10.1039/d3dt02595k] [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: 11/29/2023]
Abstract
Elucidating the structure-property relationships of ultra-small metal nanocluster with basic nuclear is of great significance for understanding the evolution mechanism in both the structures and properties of polynuclear metal nanoclusters. In this study, an ultra-small copper hydride (CuH for short) nanocluster was simply synthesized with high yield, and the large-scale preparation was also achieved. Single crystal X-ray diffractometer (SC-XRD) analysis shows that this copper NC contains a tetrahedral Cu4 core co-capped by four PPh2Py ligands and two Cl in which the existence of the central H atom in tetrahedron was further identified experimentally and theoretically. This CuH nanocluster exhibits bright yellow emission, which is proved to be the mixture of phosphorescence and fluorescence by the sensitivity of both emission intensity and lifetime to O2. Furthermore, the temperature-dependent emission spectra and density functional theory (DFT) calculations suggest that the luminescence of CuH mainly originates from the metal-to-ligand charge transfer and cluster-centered triplet excited states. This work offers new insights into understanding the structure-property relationship of basic nuclear CuH nanocluster.
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Affiliation(s)
- Tingting Xu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Shuai Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Zhezhen Wei
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Peiqun Yin
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui 230032, China
| | - Jianan Sun
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui 230032, China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Yongbo Song
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui 230032, China
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Wang M, Luo R, Liu Y, Zhao X, Zhuang X, Xu WW, Chen M, Liu P. An unexpected interfacial Mo-rich phase in 2D molybdenum disulfide and 3D gold heterojunctions. Nanoscale 2023; 15:14906-14911. [PMID: 37654188 DOI: 10.1039/d3nr01818k] [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: 09/02/2023]
Abstract
The interface engineering of two-dimensional transition metal dichalcogenides (2D-TMDs) and metals has been regarded as a promising strategy to modulate their outstanding electrical and optoelectronic properties. Chemical Vapour Deposition (CVD) is an effective strategy to regulate the contact interface between TMDs and metals via directly growing 2D TMDs on a 3D metal substrate. Nevertheless, the underlying mechanisms of interfacial phase formation and evolution during TMD growth on a metallic substrate are less known. In this work, we found a 2D non-van der Waals (vdW) Mo-rich phase (MoNSN+1) during thermal sulfidation of a Mo-Au surface alloy to molybdenum disulfide (MoS2) in a S-poor environment. Systematic atomic-scale observations reveal that the periodic Mo and S atomic layers are arranged separating from each other in the non-vdW Mo-rich phase, and the Mo-rich phase preferentially nucleates between outmost 2D MoS2 and a 3D nanostructured Au substrate which possesses copious surface steps and kinks. Theoretical calculations demonstrate that the appearance of the Mo-rich phase with a unique metallic nature causes an n-type contact interface with an ultralow transition energy barrier height. This study may help understand the formation mechanism of the interfacial second phase during the epitaxial growth of 2D-TMDs on 3D nanostructured metals, and provide a new approach to tune the Schottky barrier height by the design of the interfacial phase structure at the heterojunction.
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Affiliation(s)
- Mengjia Wang
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
| | - Ruichun Luo
- School of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuxin Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Xiaoran Zhao
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
| | - Xiaodong Zhuang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Mingwei Chen
- Department of Materials Science and Engineering, Johns Hopkin University, Baltimore, MD 21218, USA.
| | - Pan Liu
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
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Yan C, Li Y, Wang E, Xu WW. Decoding Chemical Formula to Spatial Conformation: A Structural Study Targeting the [Au 25(SR) 19] 0 Nanocluster. J Phys Chem Lett 2023; 14:7632-7637. [PMID: 37602763 DOI: 10.1021/acs.jpclett.3c01731] [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: 08/22/2023]
Abstract
Structural global searches employing highly efficient algorithms have been extensively applied for studying molecules and clusters. However, the code-aided spatial conformational determination of thiolated gold nanoclusters (AuNCs) has not been accomplished because of the complex structural architecture of AuNCs, especially when only the chemical formula of the cluster is known. Experiments have shown that the star [Au25(SR)18]-1 cluster can transform into the [Au25(SR)19]0 cluster. However, the crystal structure of the [Au25(SR)19]0 cluster has not been experimentally determined, and theoretical structural predictions for this cluster are challenging because no template cluster presents for [Au25(SR)19]0. Utilizing the grand unified model, this study succeeded in obtaining the structure of the [Au25(SR)19]0 cluster by using minimal computations, which was verified to be reasonable through stability analysis and experimental absorption spectrum confirmation. Although the predicted [Au25(SR)19]0 cluster has the same number of Au atoms as the [Au25(SR)18]-1 cluster, the structure is considerably altered, owing to the presence of a face-centered cubic kernel. This study provides insights for decoding the chemical formulas of AuNCs to determine their spatial conformations.
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Affiliation(s)
- Chaoqiang Yan
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Yanshuang Li
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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Han W, Wang G, Liu P, Li W, Xu WW. Structural predictions of three medium-sized thiolate-protected gold nanoclusters Au 44(SR) 30, Au 56(SR) 32, and Au 60(SR) 34. Nanoscale Adv 2023; 5:4464-4469. [PMID: 37638170 PMCID: PMC10448351 DOI: 10.1039/d3na00372h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/27/2023] [Indexed: 08/29/2023]
Abstract
The knowledge of structural evolution among thiolate-protected gold nanoclusters is not only helpful for understanding their structure-property relationship but also provides scientific evidence to rule-guided structure predictions of gold nanoclusters. In this paper, three new atomic structures of medium-sized thiolate-protected gold nanoclusters, i.e. Au44(SR)30, Au56(SR)32, and Au60(SR)34, are predicted based on the grand unified model and ring model. Two structural evolution rules, i.e., Au44(SR)28 + [Au12(SR)4] → Au56(SR)32 + [Au12(SR)4] → Au68(SR)36 and Au44(SR)30 + [Au8(SR)2] → Au52(SR)32 + [Au8(SR)2] → Au60(SR)34 + [Au8(SR)2] → Au68(SR)36, are explored. The generic growth patterns underlying both sequences of nanoclusters can be viewed as sequential addition of four and three highly stable tetrahedral Au4 units on the cores, respectively. In addition, density functional theory calculations show that these three newly predicted gold nanoclusters have very close formation energies with their adjacent structures, large highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps, and all-positive harmonic vibration frequencies, indicating their high stabilities.
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Affiliation(s)
- Wenhua Han
- College of Energy Engineering, Xinjiang Institute of Engineering Urumqi 830023 China
| | - Gang Wang
- College of Energy Engineering, Xinjiang Institute of Engineering Urumqi 830023 China
| | - Pengye Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University Ningbo 315211 China
| | - Wenliang Li
- College of Energy Engineering, Xinjiang Institute of Engineering Urumqi 830023 China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University Ningbo 315211 China
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Wang H, He Q, Liu D, Deng XZ, Ma J, Xie LN, Sun ZL, Liu C, Zhao RR, Lu K, Chu XX, Gao N, Wei HC, Sun YH, Zhong YP, Xing LJ, Zhang HY, Zhang H, Xu WW, Li ZJ. [Efficacy and safety of bendamustine-rituximab combination therapy for newly diagnosed indolent B-cell non-Hodgkin's lymphoma and elderly mantle cell lymphoma: a multi-center prospective phase II clinical trial in China]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:550-554. [PMID: 37749033 PMCID: PMC10509620 DOI: 10.3760/cma.j.issn.0253-2727.2023.07.004] [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] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Indexed: 09/27/2023]
Abstract
Objectives: This study aimed to assess the efficacy and safety of bendamustine in combination with rituximab (BR regimen) for the treatment of newly diagnosed indolent B-cell non-Hodgkin's lymphoma (B-iNHL) and elderly mantle cell lymphoma (eMCL) . Methods: From December 1, 2020 to September 10, 2022, a multi-center prospective study was conducted across ten Grade A tertiary hospitals in Shandong Province, China. The BR regimen was administered to evaluate its efficacy and safety in newly diagnosed B-iNHL and eMCL patients, and all completed at least four cycles of induction therapy. Results: The 72 enrolled patients with B-iNHL or MCL were aged 24-74 years, with a median age of 55 years. Eastern Cooperative Oncology Group (ECOG) performance status scores of 0-1 were observed in 76.4% of patients, while 23.6% had scores of 2. Disease distribution included follicular lymphoma (FL) (51.4% ), marginal zone lymphoma (MZL) (33.3% ), eMCL (11.1% ), and the unknown subtype (4.2% ). According to the Ann Arbor staging system, 16.7% and 65.3% of patients were diagnosed with stage Ⅲ and stage Ⅳ lymphomas, respectively. Following four cycles of BR induction therapy, the overall response rate was 98.6%, with a complete response (CR) rate of 83.3% and a partial response (PR) rate of 15.3%. Only one eMCL patient experienced disease progression during treatment, and only one FL patient experienced a relapse. Even when evaluated using CT alone, the CR rate was 63.9%, considering the differences between PET/CT and CT assessments. The median follow-up duration was 11 months (range: 4-22), with a PFS rate of 96.8% and an OS rate of 100.0%. The main hematologic adverse reactions included grade 3-4 leukopenia (27.8%, with febrile neutropenia observed in 8.3% of patients), grade 3-4 lymphopenia (23.6% ), grade 3-4 anemia (5.6% ), and grade 3-4 thrombocytopenia (4.2% ). The main non-hematologic adverse reactions such as fatigue, nausea/vomiting, rash, and infections occurred in less than 20.0% of patients. Conclusion: Within the scope of this clinical trial conducted in China, the BR regimen demonstrated efficacy and safety in treating newly diagnosed B-iNHL and eMCL patients.
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Affiliation(s)
- H Wang
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Q He
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - D Liu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - X Z Deng
- Department of Hematology, Weihai Municipal Hospital, Weihai 264200, China
| | - J Ma
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - L N Xie
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Z L Sun
- Department of Hematology, Jining First People's Hospital, Jining 272000, China
| | - C Liu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - R R Zhao
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - K Lu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - X X Chu
- Department of Hematology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, China
| | - N Gao
- Department of Hematology, Binzhou Medical University Hospital, Binzhou 256600, China
| | - H C Wei
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Y H Sun
- Department of Hematology, Weifang People's Hospital, Weifang 261000, China
| | - Y P Zhong
- Department of Hematology, Qingdao Municipal Hospital, Qingdao 266000, China
| | - L J Xing
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - H Y Zhang
- Department of Hematology, Linyi People's Hospital, Linyi 276000, China
| | - H Zhang
- Department of Hematology, Affiliated Hospital of Jining Medical University, Jining 272000, China
| | - W W Xu
- Department of Hematology, The First Affiliated Hospital of Shandong First Medical University, Jinan 250000, China
| | - Z J Li
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
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Zhang H, Xu WW, Chen CD, Ge CS, Zheng ZG, Duan CL, Xue GW, Cai YD, Zhang W, Wang L, Sun ZM, Li ZF, Du CL, Gao Y, Zhang JL. [A prospective study of position selection combined with autologous blood intrathoracic infusion in the treatment of postoperative persistent air leakage with an unexpanded lung]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:404-407. [PMID: 36990705 DOI: 10.3760/cma.j.cn112147-20220705-00563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
We prospectively studied 17 patients with spontaneous pneumothorax or giant emphysematous bulla at Rizhao Hospital of Traditional Chinese Medicine from October 2020 to March 2022. All patients underwent thoracoscopic interventional therapy, had experienced continued air leakage for 3 days with closed thoracic drainage postoperatively, had an unexpanded lung on CT, and/or failed to intervention with position selection combined with intra-pleural thrombin injection(referred to as "position plus1.0"). They were all treated with position selection combined with autologous blood (100 ml) and thrombin (5 000 U) intra-pleural injection(referred to as "position plus 2.0").The success rate of the "position plus 2.0" intervention was 16/17, and the recurrence rate was 3/17. There were four cases of fever, four cases of pleural effusion, one case of empyema, and no other adverse reactions. This study has shown that the "position plus 2.0" intervention is safe, effective, and simple for patient with persistent air leakage failed to intervention with"position plus 1.0" after thoracoscopic treatment of pulmonary and pleural diseases related to bulla.
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Affiliation(s)
- H Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W W Xu
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C D Chen
- Department of Respiratory Medicine, Rizhao People's Hospital, Rizhao 276800, China
| | - C S Ge
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z G Zheng
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C L Duan
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - G W Xue
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y D Cai
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - L Wang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z M Sun
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z F Li
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C L Du
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y Gao
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - J L Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
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Li WX, Xie ZB, Xu J, Xia BC, Duan HJ, Song JH, Wang HL, Xu WW, Zhang Y, Fan H. [Analysis of enterovirus infection type among acute respiratory tract infection cases in Luohe City, Henan Province from 2017 to 2021]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:378-385. [PMID: 36655353 DOI: 10.3760/cma.j.cn112150-20221011-00985] [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: 01/20/2023]
Abstract
Objective: To understand the infection status of Enterovirus (EV) in cases of acute respiratory infections (ARIs) in Luohe City, Henan Province from 2017 to 2021, and analyze the prevalence and type composition of EV in ARIs. Methods: From October 2017 to May 2021, pharyngeal swab samples were collected from 1 828 patients with ARIs in Luohe Central Hospital and the clinical epidemiological data of these cases were also collected. EV-positive samples were identified by Quantitative Real-time Polymerase Chain Reaction (qPCR). The 5'-untranslated region (5'UTR) was amplified by Reverse Transcription-Polymerase Chain Reaction (RT-PCR). The results of 5'UTR region were initially typed by Enterovirus Genotyping Tool Version 1.0. Based on the typing results, the full-length of VP1 region was amplified by RT-PCR. The EV typing was identified again by VP1 region. Results: Among 1 828 cases of ARIs, 56.7% (1 036) were males. The median (Q1, Q3) age was about 3 (1, 5) years. Patients under 5 years old accounted for 71.6% (1 309 cases). Among all cases, a total of 71 EV-positive samples were identified by qPCR, with a detection rate of 3.88% (71/1 828). The EV detection rates for men and women were 3.28% (34/1 036) and 4.67% (37/792), without statistically significant differences (χ2=2.32, P=0.14). The EV detection rates for 2 to <6 years, 6 months to <2 years, 6 to <10 years, and <6 months were 6.29% (48/763), 3.00% (18/600), 2.52% (4/159), and 1.67% (1/60) (χ2=27.91, P<0.001). The EV detection rate was 0.92% (3/326) in autumn and winter of 2017. The EV detection rates were 1.18% (6/508), 2.47% (12/485) and 8.31% (34/409) in each year from 2018 to 2020, with an increasing trend year by year(χ2trend=29.76, P<0.001). The main prevalent seasons were summer and autumn. The detection rate in spring of 2021 was 4.00% (4/100). A total of 12 types were identified and classified as CVA2, CVA4, CVA5, CVA6, CVA10, CVB3, CVB5, E5, E11, E30, PV-1, and EV-D68. The types of CVA2, CVA10, CVA6, and CVB3 were the dominant phenotypes. In 59 sample of EV typing, the main clinical manifestation was upper respiratory tract infection (36/59, 61.01%). The dominant types detected in upper respiratory tract infections were CVA10 (10/36, 27.78%), CVA6 (9/36, 25.00%) and CVB3 (8/36, 22.22%). The dominant type detected in lower respiratory tract infections was CVA2 (7/19, 36.84%). Conclusion: In Luohe City, Henan Province from 2017 to 2021, EV infection in ARIs cases has clear seasonal and age-specific patterns, and the dominant types of upper and lower respiratory tract infections are different.
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Affiliation(s)
- W X Li
- School of Public Health and Health Management, Shandong First Medical University/Shandong Academy of Medical Sciences, Jinan 250117, China NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Z B Xie
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - J Xu
- Institute of Expanded Immunization Programme, Henan Provincial Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - B C Xia
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - H J Duan
- School of Public Health and Health Management, Shandong First Medical University/Shandong Academy of Medical Sciences, Jinan 250117, China
| | - J H Song
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - H L Wang
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - W W Xu
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Y Zhang
- NHC Key Laboratory of Medical Virology and Viral Diseases/National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - H Fan
- School of Public Health and Health Management, Shandong First Medical University/Shandong Academy of Medical Sciences, Jinan 250117, China
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10
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Zhang H, Duan CL, Xue GW, Xu WW, Ge CS, Cai YD, Zheng ZG, Du CL, Gao Y, Zhang JL, Li ZF, Zhang W, Wang L. [Effectiveness and safety of medical glue assisted argon plasma coagulation union giant emphysematous bulla volume reduction via thoracoscope on the treatment of spontaneous pneumothorax with subpleural bullae]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:1204-1208. [PMID: 36480851 DOI: 10.3760/cma.j.cn112147-20221014-00820] [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: 12/13/2022]
Abstract
Objective: To evaluate the effectiveness and safety of a new treatment protocol that combined "medical glue assisted argon plasma coagulation"(hereinafter called "APC plus") and "giant emphysematous bulla volume reduction"(hereinafter called "one thoracoscope plus one needle") via medical thoracoscopy on the spontaneous pneumothorax patients whose chest high resolution CT (HRCT) showed multiple subpleural bullae (SPB) and at least one SPB≥4 cm in diameter. Methods: A retrospective analysis was performed on the clinical data of 46 cases of spontaneous pneumothorax with multiple SPB(at least one SPB≥4 cm in diameter), 42 males and 4 females, aged from 31 to 79 (68.5±10.3) years,from June 2018 to December 2021 in Rizhao Hospital of Traditional Chinese Medicine. The time of air leakage discontinuance, the disappearance rate and reduction degree of target subpleural blebs one week after operation, the degree of reduction and the incidence of postoperative complications were observed. Two-year follow-up after operation was carried out to assess the recurrence rate and its short- and long-term complications. Results: Among the 46 patients, SPB disappeared or nearly disappeared in 39 cases (84.78%), decreased in number or reduced in volume in 5 cases (10.87%), and remained unchanged in 2 cases (4.35%) after the intervention of "APC Plus"; 40 patients stopped leaking within 1 week and 6 cases stopped leaking over a week. Eleven patients finished the 3-year follow-up, 13 finished 2-year follow-up and 6 finished 1-year follow-up, with only 1 relapse. No serious complications occurred in all these 46 patients. Conclusion: "APC plus" combining with "one thoracoscope plus one needle" is safe and effective in the treatment of pneumothorax patients with multiple subpleural bullae of varying sizes.
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Affiliation(s)
- H Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C L Duan
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - G W Xue
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W W Xu
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C S Ge
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y D Cai
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z G Zheng
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C L Du
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y Gao
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - J L Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z F Li
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - L Wang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
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11
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Zhao W, Xu WW, Jiang J, Zhao X, Duan X, Sun Y, Francisco JS, Zeng XC. Evidence of Formation of Monolayer Hydrated Salts in Nanopores. J Am Chem Soc 2022; 144:18976-18985. [PMID: 36197785 DOI: 10.1021/jacs.2c07372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Despite much effort being devoted to the study of ionic aqueous solutions at the nanoscale, our fundamental understanding of the microscopic kinetic and thermodynamic behaviors in these systems remains largely incomplete. Herein, we reported the first 10 μs molecular dynamics simulation, providing evidence of the spontaneous formation of monolayer hexagonal honeycomb hydrated salts of XCl2·6H2O (X = Ba, Sr, Ca, and Mg) from electrolyte aqueous solutions confined in an angstrom-scale slit under ambient conditions. By using both the classical molecular dynamics simulations and the first-principles Born-Oppenheimer molecular dynamics simulations, we further demonstrated that the hydrated salts were stable not only at ambient temperature but also at elevated temperatures. This phenomenon of formation of hydrated salt in water is contrary to the conventional view. The free energy calculations and dehydration analyses indicated that the spontaneous formation of hydrated salts can be attributed to the interplay between ion hydration and Coulombic attractions in the highly confined water. In addition to providing molecular-level insights into the novel behavior of ionic aqueous solutions at the nanoscale, our findings may have implications for the future exploration of potential existence of water molecules in the saline deposits on hot planets.
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Affiliation(s)
- Wenhui Zhao
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Wen Wu Xu
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Jian Jiang
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States.,Department of Materials Science & Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong, China
| | - Xiaorong Zhao
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Xiangmei Duan
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Yunxiang Sun
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Joseph S Francisco
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States.,Department of Materials Science & Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong, China
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12
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Abstract
This study presents thorough structural insights into the stability of crystallized Au22(SAdm)16 (HSAdm = 1-adamantanethiol) nanocluster. With the recently developed Ring Model for describing the interaction between inner gold cores and outer protecting ligands in thiolate-protected gold nanoclusters, the experimental spontaneous transformation from the crystallized Au22(SAdm)16 to Au21(SAdm)15 could be well understood as structurally unfavorable for the current Au22(SAdm)16 and could also be attributed to the weaker aurophilic interaction between the inner Au4 core and the surrounding rings in Au22(SAdm)16 over that in Au21(SAdm)15. Furthermore, with the Ring Model and the grand unified model, two new Au22(SCH3)16 isomers with evident lower energies, higher HOMO-LUMO gaps as well as distinct optical properties over the available crystallized isomer were obtained. This study deepens the current knowledge on the structure of the Au22(SR)16 cluster from a new structural point of view and also confirms the validity as well as practicability of the Ring Model in understanding and predicting the stable structures of thiolate-protected gold nanoclusters.
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Affiliation(s)
- Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China.
| | - Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, China. .,State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China.
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13
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Liu Y, Han W, Hong Z, Xu WW, Wang E. Toward Understanding the Correlation between the Charge States and the Core Structures in Thiolate-Protected Gold Nanoclusters. J Phys Chem Lett 2022; 13:5387-5393. [PMID: 35678557 DOI: 10.1021/acs.jpclett.2c01306] [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: 06/15/2023]
Abstract
The charge states of thiolate-protected gold nanoclusters (AuNCs) are vital to their stabilities through affecting the number of the valence electrons. However, the origin of the charge states of AuNCs has not been fully understood yet. Herein, through fulfilling the duet-rule derived Au3(2e) and Au4(2e) elementary blocks in the grand unified model (GUM), analysis on the substantial crystal structures indicates the charge states of AuNCs can correlate with their core structural packing, especially the number of Au3(2e) elementary blocks. In addition, aided by the Au3(2e) block's role in tailoring the population of valence electron, three new AuNCs including Au18(SCH3)14, Au30(SCH3)20, and [Au30(SCH3)21]- are predicted through controllably specifying the exact number of Au3(2e) in the core. This work shows that GUM can bridge the gap among the charge states of the cluster, the inner core structure of the cluster, and the detachment of outer ligands via the electron counting rule.
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Affiliation(s)
- Yuxin Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Zeen Hong
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
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14
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Zhu Z, Mao NY, Zhang Y, Xu WW. [Consideration on the emerging acute severe hepatitis cases with unknown etiology in children of some countries]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:679-681. [PMID: 35484645 DOI: 10.3760/cma.j.cn112150-20220427-00423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Since January 2022, acute severe hepatitis cases with unknown etiology in children have occurred in many countries in Europe and the United States, and 43.8% of the cases were positive for human adenovirus (HAdV), and some cases were identified as HAdV-41. However, more evidences including etiology, genomics, liver pathology, and immunohistochemistry are needed to determine the main cause of this outbreak. At present, due to the lack of systematic surveillance and research on hepatitis caused by HAdV infection, it is impossible to determine whether there are similar hepatitis cases occurred in China. It is urgent to carry out HAdV virolgocial surveillance based on clinical symptom, and potential risk of acute severe hepatitis should be studied as soon as possible according to the available relevant clinical, epidemiological and virological data, as well as risk factor information, which will provide scientific and technical support for the prevention and control of HAdV-related diseases.
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Affiliation(s)
- Z Zhu
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
| | - N Y Mao
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
| | - Y Zhang
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
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15
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Zhao X, Liu Y, Lin D, Zhu W, Ma N, Xu WW, Zhao W, Sun Y, Zeng XC. Anomalous Phase Behaviors of Monolayer NaCl Aqueous Solutions Induced by Effective Coulombic Interactions within Angstrom-Scale Slits. J Phys Chem Lett 2022; 13:2704-2710. [PMID: 35302778 DOI: 10.1021/acs.jpclett.2c00501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Interests in subnanofluidic devices have called for molecular dynamics (MD) simulation studies of the thermodynamic behavior of monolayer salt solution within angstrom-scale slits. However, it still remains a grand challenge to accurately describe the Coulombic interactions by incorporating the effects of charge transfer and electronic dielectric screening. Herein, by using the electronic continuum model, where the effective ion charges are fine-tuned with a scaling factor of λ, we present simulation evidence that the effective Coulombic interactions among Na+/Cl- ions can strongly affect the behavior of monolayer ionic aqueous solution. Our microsecond-scale MD simulations show that only the counterions with moderate effective charges (0.3 ≤ λ ≤ 0.8) can dissolve in monolayer water, whereas the high effective charges (λ ≥ 0.85) induce ions to assemble into monolayer nanocrystals, and ions with the low effective charges (λ ≤ 0.2) exhibit gas-like nanobubble. These findings could provide deeper insights into the physical chemistry behind subnanofluidic iontronic devices.
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Affiliation(s)
- Xiaorong Zhao
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Yuying Liu
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Dongdong Lin
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Weiduo Zhu
- Department of Physics, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Nan Ma
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Wen Wu Xu
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Wenhui Zhao
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Yunxiang Sun
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska─Lincoln, Lincoln, Nebraska 68588, United States
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16
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Song Y, Li Y, Zhou M, Li H, Xu T, Zhou C, Ke F, Huo D, Wan Y, Jie J, Xu WW, Zhu M, Jin R. Atomic structure of a seed-sized gold nanoprism. Nat Commun 2022; 13:1235. [PMID: 35264573 PMCID: PMC8907178 DOI: 10.1038/s41467-022-28829-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/11/2021] [Accepted: 02/07/2022] [Indexed: 11/18/2022] Open
Abstract
The growth of nanoparticles along one or two directions leads to anisotropic nanoparticles, but the nucleation (i.e., the formation of small seeds of specific shape) has long been elusive. Here, we show the total structure of a seed-sized Au56 nanoprism, in which the side Au{100} facets are surrounded by bridging thiolates, whereas the top/bottom {111} facets are capped by phosphine ligands at the corners and Br− at the center. The bromide has been proved to be the key to effectively stabilize the Au{111} to fulfill a complete face-centered-cubic core. In femtosecond electron dynamics analysis, the non-evolution of transient absorption spectra of Au56 is similar to that of larger-sized gold nanoclusters (n > 100), which is ascribed to the completeness of the prismatic Au56 core and an effective electron relaxation pathway created by the stronger Au-Au bonds inside. This work provides some insights for the understanding of plasmonic nanoprism formation. The formation pathway of shape-anisotropic nanoparticles is difficult to characterize and not well understood. The authors synthesize a prismatic-shaped Au56 nanocluster as possible seed of a prismatic nanoparticle and characterize the structure and ligand bonding motifs, providing insight into the formation and surface protection mechanisms.
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Affiliation(s)
- Yongbo Song
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, China. .,School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui, 230032, China.
| | - Yingwei Li
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Meng Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, China
| | - Tingting Xu
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui, 230032, China
| | - Chuanjun Zhou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, China
| | - Feng Ke
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, China
| | - Dayujia Huo
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Yan Wan
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Jialong Jie
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, China.
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
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17
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Jiang J, Xu WW, Zhang Y, Zhu Z, Mao NY. [Advances on molecular typing methods and evolution of human parainfluenza virus]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:203-211. [PMID: 35078303 DOI: 10.3760/cma.j.cn112150-20211022-00983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Human parainfluenza viruses (HPIVs) is one of the main causes of acute respiratory tract infections in children. HPIVs have been grouped into four serotypes (HPIV1~HPIV4) according to serological and genetic variation. Different serotypes of HPIVs have diverse clinical disease spectrum, epidemic characteristics and disease burden. Based on the nucleotide variation in structural protein genes, HPIVs can be further divided into distinct genotypes and subtypes with diverse temporal and spatial distribution features. The standard molecular typing methods are helpful to clarify the gene evolution and transmission patterns of HPIVs in the process of population transmission. However, the development of molecular epidemiology of HPIVs has been hindered by the lack of a standardized molecular typing method worldwide. Therefore, this study reviewed the viral characteristics, genome structure, existing genotyping methods and evolution of HPIVs, and screened the reference strains for molecular typing, so as to improve the understanding of gene characteristics and molecular typing of HPIVs, and provide an important scientific basis for the monitoring and research of molecular epidemiology of HPIVs in China.
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Affiliation(s)
- J Jiang
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - W W Xu
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Y Zhang
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Z Zhu
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - N Y Mao
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
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18
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Yang L, He Q, Han W, Liu P, Xu WW. Application of grand unified model and ring model in understanding the isomeric structures of Au28(SR)20 nanoclusters. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139133] [Citation(s) in RCA: 1] [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: 11/24/2022]
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19
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Zhang Y, Song JH, Xu WW. [Attention should be paid to the detection and surveillance of human respiratory syncytial virus]. Zhonghua Yi Xue Za Zhi 2021; 101:2835-2838. [PMID: 34587725 DOI: 10.3760/cma.j.cn112137-20210621-01400] [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: 11/05/2022]
Abstract
Human respiratory syncytial virus (HRSV) is the main pathogen of severe lower respiratory tract infection in infants and young children. It seriously endangers children's health. In recent years, great breakthroughs have been made in the research and development of HRSV vaccines and antibody-based biological products. The research and development and use strategies are inseparable from the monitoring of HRSV prevalence and virus variation characteristics. The World Health Organization (WHO) pays great attentions to the surveillance of HRSV epidemiology and virus variation characteristics, but China lacks national level and multi-center HRSV surveillance data, the surveillance case definitions used by various laboratories are inconsistent, and the detection and surveillance methods of HRSV are not unified. Results from different laboratories are difficult to be compared and analyzed. Therefore, it is urgent to establish a nation-wide HRSV surveillance network in China, and to persistently monitor the epidemic characteristics and virus variation characteristics of HRSV by using standardized HRSV detection methods and surveillance guideline, so as to provide basic scientific data for the research and development, use and evaluation of monoclonal antibodies and vaccines.
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Affiliation(s)
- Y Zhang
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
| | - J H Song
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Diseases Control and Prevention, China CDC, NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Measles/Rubella Laboratory, Beijing 102206, China
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20
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Ke F, Zhou C, Zheng M, Li H, Bao J, Zhu C, Song Y, Xu WW, Zhu M. The alloying-induced electrical conductivity of metal-chalcogenolate nanowires. Chem Commun (Camb) 2021; 57:8774-8777. [PMID: 34378573 DOI: 10.1039/d1cc01849c] [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: 11/21/2022]
Abstract
Alloying is one of the most effective strategies to change the properties of inorganic-organic hybrid materials, but there are few reports of the alloying of one-dimensional nanowires with precise atomic structure due to the difficulties in obtaining the single crystals of nanowires themselves. Herein, we describe the synthesis and characterization of an alloyed one-dimensional Ag-Cu nanowire [Ag2.5Cu1.5(S-Adm)4]n. Compared with the unalloyed [Ag4(S-Adm)4]n, our novel alloyed nanowire exhibits good conductivity, and its resistivity (as a powder) was determined to be 107 Ω m by impedance analysis-consistent with that of a semiconductor. Accordingly, based on these properties combined with its excellent thermal stability and high-yielding, gram-scale synthesis, [Ag2.5Cu1.5(S-Adm)4]n is proposed for electronic-device applications.
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Affiliation(s)
- Feng Ke
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, 230601, P. R. China.
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21
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Wang DY, Song Y, Han ZZ, Xiao JB, Lu HH, Yan DM, Ji TJ, Yang Q, Zhu SL, Xu WW, Zhang Y. [Genetic characterization analysis of the whole genome sequence of Coxsackievirus A8 associated with hand, foot and mouth disease in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1487-1492. [PMID: 34814572 DOI: 10.3760/cma.j.cn112338-20201023-01266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To study the genomic sequence of Coxsackievirus A8 (CV-A8) associated with hand, foot and mouth disease (HFMD) from 2013 to 2018 in China and to analyze the genetic evolution of each coding region of the full-length genome. Methods: The genome sequences of 11 CV-A8 strains isolated from patients with HFMD in different regions of China from 2013 to 2018 were determined. Sequence alignment and genetic evolution analysis were performed by Sequencher 5.0 and MEGA 7.0 software, etc. Results: Sequence alignment showed that the genome length of 11 CV-A8 strains ranged from 7 393 bp to 7 400 bp. There was no base insertion or deletion in the coding region compared with the prototype strain, but there were individual base insertion or deletion in the non-coding region. The nucleotide and amino acid similarities in the VP1 region of 11 CV-A8 strains were 78.3%-98.6% and 92.6%-99.7%, respectively, and the nucleotide and amino acid sequences identities with the CV-A8 prototype strain were 78.3%-98.2% and 92.6%-99.7%, respectively. Based on the phylogenetic analysis of VP1 region sequences, the CV-A8 can be divided into five genotypes: A, B, C, D and E. The 11 CV-A8 strains in this study belonged to genotypes C (1 strain), D (2 strains) and E (8 strains). The nucleotide and amino acid similarities of 11 CV-A8 full-length genomes were 81.3%-98.8% and 95.9%-99.5%, respectively. The phylogenetic tree of the P2 region showed that the eight E genotypes CV-A8 had the closest evolutionary distance with CV-A4, CV-A14, and CV-A16. The phylogenetic tree of the P3 region showed that the eight E genotypes CV-A8 had a close evolutionary distance with CV-A5, CV-A16, CV-A14 and CV-A4. Conclusions: The 11 CV-A8 stains in this study showed significant intra-genotype diversity in capsid region and recombinant diversity in non-capsid region which indicated that CV-A8 quasispecies were still undergoing dynamics variation. CV-A8 may become an important pathogen of HFMD and the monitoring of CV-A8 needs to be further strengthened.
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Affiliation(s)
- D Y Wang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - Y Song
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - Z Z Han
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - J B Xiao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - H H Lu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - D M Yan
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - T J Ji
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - Q Yang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - S L Zhu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
| | - Y Zhang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention/National Laboratory of Poliomyelitis/WHO West Pacific Regional Polio Reference Laboratory/Key Laboratory of Biosafety and Key Laboratory of Medical Viruses and Viral Diseases, National Health Commission, Beijing 102206, China
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Zhang H, Wang L, Ge CS, Xue GW, Bu XC, Zhang W, Duan CL, Liu ZT, Wang MY, Cai YD, Xu WW, Gao Y. [Efficacy and safety of giant emphysematous bulla volume reduction via medical thoracoscope]. Zhonghua Yi Xue Za Zhi 2021; 101:2370-2374. [PMID: 34404129 DOI: 10.3760/cma.j.cn112137-20201116-03107] [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: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of giant emphysematous bulla (GEB) volume reduction via medical thoracoscope. Methods: This was a prospective, single-arm study conducted between July 2018 and September 2020 in Ri Zhao Hospital of Traditional Chinese Medicine. Patients who met the inclusion criteria were treated with GEB volume reduction via medical thoracoscope and were followed up to evaluate the efficacy and safety of the technique. According to comparison of preoperative and postoperative chest CT results, the self-designed evaluation criteria of imaging efficacy were as follows: complete or nearly complete disappearance of GEB (GEB volume reduction ≥90%), significant reduction of GEB (75%≤GEB volume reduction<90%), reduction of GEB (50%≤GEB volume reduction<75%) and no change (GEB volume reduction<50%). Results: A total of 47 patients were included, among whom 43 were males, with an age M (Q1, Q3) of 63.0 (55.0, 67.0). The CT results showed complete or nearly complete disappearance of GEB in 43 patients, significant reduction of GEB in 3 patients and reduction of GEB in 1 patient before discharge. The degree of dyspnea improved significantly (P<0.05). Arterial partial pressure of carbon dioxide (PaCO2) decreased from (48.2±8.4)mmHg (1 mmHg=0.133 kPa) to (45.4±7.3)mmHg (P<0.05). The 6-minute walk test (6MWT) increased from (245.6±162.4)m to (283.5±152.2)m (P<0.05). Six-month postoperative follow-up was completed in 24 patients, and CT results showed that the efficacy of volume reduction was continuous compared with that before discharge. GEB was further reduced or even disappeared in 3 of the cases. Besides, the degree of dyspnea, 6MWT (384.4±148.2)m and PaCO2 (42.7±6.6)mmHg were improved significantly (P<0.05). The oxygenation index (356.86±61.21)mmHg was significantly higher than that before surgery (295.20±67.16)mmHg and before discharge (294.50±76.69)mmHg (P<0.05). No perioperative deaths occurred. Conclusions: GEB volume can be completely eliminated or significantly reduced by this innovative technique, while PaCO2, the degree of dyspnea and exercise endurance can be significantly improved after operation. The 6-month follow-up after surgery showed that the above benefits continued, and that the oxygenation index improved significantly.
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Affiliation(s)
- H Zhang
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - L Wang
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C S Ge
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - G W Xue
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - X C Bu
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W Zhang
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - C L Duan
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Z T Liu
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - M Y Wang
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y D Cai
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - W W Xu
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
| | - Y Gao
- Department of Respiratory and Critical Care Medicine, Ri Zhao Hospital of Traditional Chinese Medicine, Rizhao 276800, China
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23
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Xu J, Xie ZB, Guo JY, Song JH, He P, Min XY, Zhou SS, Zhang Q, Sun KX, Hu ML, Xia BC, Liu Y, Jiang J, Zhu Z, Mao NY, Zhang Y, Xu WW. [Viral pathogenic spectrum analysis of severe acute respiratory infection cases in Luohe City, Henan province from 2017 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:931-937. [PMID: 34445830 DOI: 10.3760/cma.j.cn112150-20210325-00296] [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: 11/05/2022]
Abstract
Objective: The purpose of this study was to investigate the characteristics of viral pathogen spectrum and the epidemiological characteristics of each viral pathogen in hospitalized cases associated with severe acute respiratory infection (SARI) in Luohe City, Henan Province from 2017 to 2019. Methods: Based the SARI Case Surveillance Platform, SARI cases were collected in Central Hospital of Luohe City, Henan Province from November 2017 to February 2019. In the end, 783 SARI cases were included, whose throat swabs were taken within 24 h of admission, as well as their demographic characteristics, onset time, clinical characteristics and other information recorded. At the same time, viral identification was performed, and the age and time distribution of each virus were analyzed. Results: The age of 783 SARI cases shown as M (P25, P75) was 3 (1, 5) years old, ranging from 1 month to 95 years old. Children under 5 years old were the majority (71.01%). The males (61.81%) were more than females (38.18%). Among the 783 SARI cases, a total of 9 kind of viruses were identified with 64.88% (508/783) of the throat swabs tested positive for at least one virus. The positive rate of influenza virus and human respiratory syncytial virus were both 20.18% (158 cases), which was the highest among all the detected respiratory virus. The co-infection rate was 15.84% (124/783), among which double infection was the most common, accounting for 85.48% (106/124) of the co-infected cases. And human respiratory syncytial virus, human rhinovirus and influenza virus were the most common pathogen in co-infection cases. Moreover, the viral positive rate was 68.71% in children aged 5 years and 63.27% in people aged 60-95 years. Influenza and human respiratory syncytial virus dominated in winter and spring, while human parainfluenza virus was the main infection in summer. Conclusion: Influenza virus and human respiratory syncytial virus were the main viruses in throat swabs of SARI cases from 2017 to 2019 in Luohe City, Henan Province. There were differences in the age and seasonal epidemiological characteristics of each virus.
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Affiliation(s)
- J Xu
- Institute of Expanded Immunization Programme, Henan Provincial Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Z B Xie
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - J Y Guo
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - J H Song
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - P He
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - X Y Min
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - S S Zhou
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Q Zhang
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - K X Sun
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - M L Hu
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - B C Xia
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Y Liu
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - J Jiang
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Z Zhu
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - N Y Mao
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - Y Zhang
- WHO WPRO Regional Reference Laboratory of Measles and Rubella/NHC Key Laboratory of Medical Virology and Viral Diseases/National Measles Laboratory, National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Disease Control and Prevention, Chinese Centers for Disease Control and Prevention, Beijing 102206, China
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Zhang H, Zhang W, Wang MY, Ge CS, Wang L, Liu ZT, Duan CL, Gao Y, Cai YD, Xu WW, Du CL, Sun ZM, Liu XL, Chen CD. [Efficacy and safety of position selection combined with intra-pleural thrombin injection in the treatment of postoperative persistent air leakage in bullous pulmonary-pleural diseases]. Zhonghua Jie He He Hu Xi Za Zhi 2021; 44:619-623. [PMID: 34256448 DOI: 10.3760/cma.j.cn112147-20210109-00034] [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: 11/05/2022]
Abstract
Objective: To explore the efficacy and safety of position selection in combination with intra-pleural thrombin injection in the treatment of persistent air leakage (PAL) after medical thoracoscopic treatment of bullous pulmonary-pleural diseases (e.g. spontaneous pneumothorax or giant emphysematous bulla). Methods: This was a prospective study conducted in Rizhao Hospital of Traditional Chinese Medicine from August 2018 to November 2020. Twenty patients(19 males,1 female) with a mean age of (62.3±8.1) years met the diagnostic criteria for PAL which was defined as the air leak persisted more than 3 days despite of the closed thoracic drainage after medical thoracoscopic treatment of bullous pulmonary-pleural diseases.They received the following treatment procedures (referred to as "position plus"):①Pleural cavity injection (50% glucose 20 ml+thrombin 5 000 U).②Changing the patient's position under continuous negative pressure suction to find the position causing the complete stop or significant reduction of air leakage, and keeping in the position for 24-48 hours.③If the PAL wasn't stopped 48 hours later, the procedures above would be repeated.The duration of air leakage after "position plus", times of pleural cavity injection, condition of lung re-expansion, recurrence of air leakage and complications during hospitalization were recorded. Descriptive statistics were used to summarize the results:¯x±s or M(P25, P75) for continuous variables; frequency and percentages for categoric variables. Results: A total of 20 patients were included. The average duration of air leakage after"position plus" was (1.32±0.97) days. The times of pleural cavity injection required were 1.0(1.0, 1.0).All the patients showed good lung re-expansion in review of imaging after PAL was stopped. One patient had recurrent air leakage during hospitalization. No serious complications occurred. Conclusion: The comprehensive "position plus" intervention method is effective, safe and easily operating for the treatment of PAL after medical thoracoscopic treatment of bullous pulmonary-pleural diseases.
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Affiliation(s)
- H Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - W Zhang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - M Y Wang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - C S Ge
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - L Wang
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - Z T Liu
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - C L Duan
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - Y Gao
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - Y D Cai
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - W W Xu
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - C L Du
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - Z M Sun
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - X L Liu
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
| | - C D Chen
- Department of Respiratory and Critical Care Medicine, Rizhao Hospital of Traditional Chinese Medicine, Shandong Province 276800, China
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25
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Zhou C, Li H, Ke F, Zhu C, Pan P, Xu WW, Kang X, Song Y, Zhu M. Au 11Ag 6 nanocluster: Controllable preparation, structural determination, and optical property investigation. J Chem Phys 2021; 154:184302. [PMID: 34241021 DOI: 10.1063/5.0050079] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The structure/composition of nanoclusters has a decisive influence on their physicochemical properties. In this work, we obtained two different Au-Ag nanoclusters, [Au9Ag12(SAdm)4(dppm)6Cl6]3+ and Au11Ag6(dppm)4(SAdm)4(CN)4, via controlling the Au/Ag molar ratios by a one-pot synthetic approach. The structure of nanoclusters was confirmed and testified by single-crystal x-ray diffraction, electrospray ionization time-of-flight mass spectrometry, XPS, powder x-ray diffraction, and electron paramagnetic resonance. The Au11Ag6 nanocluster possessed a M13 core caped by four Au atoms and four dppm and four AdmS ligands. Interestingly, four CN are observed to locate at the equator of the M13 core. Both nanoclusters contain a similar icosahedral M13 core, whereas their surface structures are totally different. However, the Au11Ag6 nanocluster exhibits good stability and strong red photoluminescence in solution.
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Affiliation(s)
- Chuanjun Zhou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Feng Ke
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Chen Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Peiyao Pan
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, People's Republic of China
| | - Xi Kang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
| | - Yongbo Song
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, Anhui 230032, People's Republic of China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, People's Republic of China
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26
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Wang E, Xu WW, Zhu B, Gao Y. Understanding the Chemical Insights of Staple Motifs of Thiolate-Protected Gold Nanoclusters. Small 2021; 17:e2001836. [PMID: 32761984 DOI: 10.1002/smll.202001836] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Improving the fundamental understanding of the basic structures of ligand-protected gold nanoclusters is essential to their bottom-up synthesis as well as their further application explorations. The thiolate ligands that cover the central metal core in staple motifs are vital for the stability of the gold clusters. However, the knowledge about the geometrical and bonding characters of the thiolate ligands has not been fully uncovered yet. In this work, density functional theory calculations and molecular orbital analysis are applied to show that the Au atoms in the thiolate ligands are hypervalent. The chemical insights of the linear SAuS configuration as well as the lengthened AuS bond by combining the 3-center 4-electron (3c-4e) model and the well-recognized valence shell electron pair repulsion theory are revealed. Valence bond formulations of the motifs are given to provide more chemical insights, for example, the resonant structures, to show how the thiolate motif forms one covalent bond and one dative covalent bond with the Au core. This work provides a thorough understanding of the structure and bonding pattern of thiolate ligands of Au nanoclusters, which is important for the rational design of ligands-protected Au nanoclusters.
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Affiliation(s)
- Endong Wang
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Beien Zhu
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Yi Gao
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
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27
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Liu P, Han W, Zheng M, Li W, Ren J, Tlahuice-Flores A, Xu WW. [Au 7(SR) 7] Ring as a New Type of Protection Ligand in a New Atomic Structure of Au 15(SR) 13 Nanocluster. J Phys Chem A 2021; 125:5933-5938. [PMID: 34190555 DOI: 10.1021/acs.jpca.1c04026] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We present a [Au7(SR)7] ring as a new type of protection ligand in a new atomic structure of Au15(SR)13 nanocluster for the first time based on the ring model developed to understand how interfacial interaction dictates the structures of protection motifs and gold cores in thiolate-protected gold nanoclusters. This new Au15(SR)13 model shows a tetrahedral Au4 core protected by one [Au7(SR)7] ring and two [Au2(SR)3] "staple" motifs. Density functional theory (DFT) calculations show that the newly predicted Au15(SR)13 (R = CH3/Ph) has a lower energy of 0.24/0.68 eV than previously proposed isomers. By comparing calculated optical absorption spectra (UV), circular dichroism (CD) spectra, and powder X-ray diffraction (XRD) patterns with related experimental spectra, the calculated CD spectra of the newly predicted Au15(SR)13 (R = CH3/Ph) cannot reproduce the experimental results, indicating that the newly predicted Au15(SR)13 is a new structure that needs to be confirmed by experiment. In addition, DFT calculations also show that the newly predicted Au15(SR)13 (R = CH3/Ph) exhibits a large HOMO-LUMO gap, suggesting its high chemical stability. The proposition of the [Au7(SR)7] ring as a protection ligand in the newly predicted Au15(SR)13 not only enriches the types of protection ligands in thiolate-protected gold nanoclusters but also further confirms the effectiveness and rationality of the ring model for understanding the interfacial interaction between the protection motifs and gold cores in thiolate-protected gold nanoclusters.
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Affiliation(s)
- Pengye Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Mengke Zheng
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenliang Li
- College of Energy Engineering; Xinjiang Institute of Engineering, Urumqi 830023, China
| | - Junfeng Ren
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
| | - Alfredo Tlahuice-Flores
- Universidad Autónoma de Nuevo León, CICFIM-Facultad de Ciencias Físico-Matemáticas, San Nicolás de los Garza, Nuevo León 66455, Mexico
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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Song JH, Chen ZX, Guo JY, Xie ZB, Du J, Wang HL, Cui AL, Zhu Z, Mao NY, Xu WW, Zhang Y. [Genotype and genetic characteristics of human respiratory syncytial virus circulating in Quanzhou, 2018-2019]. Zhonghua Yi Xue Za Zhi 2021; 101:1695-1699. [PMID: 34126719 DOI: 10.3760/cma.j.cn112137-20210202-00326] [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: 11/05/2022]
Abstract
Objective: To study the prevalence and genetic characteristics of human respiratory syncytial virus (HRSV) in Quanzhou city, from 2018 to 2019. Methods: A total of 141 throat swabs were collected from children patients of lower respiratory tract infection in Quanzhou children Hospital, Fujian Province from November 2018 to May 2019. RT-PCR was used to amplify the 3 'end of G gene HRSV. Sequencer 5.0 and MEGA5.05 softwares were used for sequence editing, phylogenetic tree construction and genotyping analysis. Results: Twenty-five samples were positive for HRSV. Seventeen samples succeeded to obtain the target gene, including 13 of HRSVA and 4 of HRSVB. Two genotypes were identified: ON1 genotype (13 samples, HRSVA) and BA9 genotype (4 samples, HRSVB). Five strains of ON1 genotype sequences were clustered with the ON1 sequences prevalent in Beijing, Changchun and Zhejiang from 2012 to 2015 (cluster1); one strain (FJ19-02) was clustered with the sequences of ON1 genotype circulating in many regions of China from 2012 to 2015 (cluster2); Seven strains were clustered independently (cluster FJ). FJ18-02, FJ19-14 and FJ19-15 of HRSVB were clustered with the BA9 genotype sequences prevalent in Changchun, Jilin Province in 2015, while FJ19-13 was closely related to the BA9 genotype sequences prevalent in Guangzhou and Zhejiang Province in 2013. Both the ON1 and BA9 genotypes showed variations of nucleotide and amino acid in 72 and 60 insertion segments. Amino acid mutation (H266L) only occurred among the sequence of cluster-FJ, and the mutations of H261Q and Q265L only appeared in strain FJ19-13. Conclusion: BA9 and ON1 genotypes were prevalent in Quanzhou city, from 2018 to 2019. Cluster-FJ was a newly discovered independent transmission chain, which may continue to circulate in local Quanzhou area.
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Affiliation(s)
- J H Song
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Z X Chen
- Department of Critical Care Medicine, Quanzhou Children's Hospital, Quanzhou 362000, China
| | - J Y Guo
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Z B Xie
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - J Du
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - H L Wang
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - A L Cui
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Z Zhu
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - N Y Mao
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - W W Xu
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Y Zhang
- WHO WPRO Regional Reference Measles/Rubella Laboratory National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
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Liu P, Han W, Zheng M, Li W, Xu WW. Unraveling the Atomic Structures of 10-Electron (10e) Thiolate-Protected Gold Nanoclusters: Three Au 32(SR) 22 Isomers, One Au 28(SR) 18, and One Au 33(SR) 23. ACS Omega 2021; 6:10497-10503. [PMID: 34056202 PMCID: PMC8153794 DOI: 10.1021/acsomega.1c01345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
The atomic structures of 10-electron (10e) thiolate-protected gold nanoclusters have not received extensive attention both experimentally and theoretically. In this paper, five new atomic structures of 10e thiolate-protected gold nanoclusters, including three Au32(SR)22 isomers, one Au28(SR)18, and one Au33(SR)23, are theoretically predicted. Based on grand unified model (GUM), four Au17 cores with different morphologies can be obtained via three different packing modes of five tetrahedral Au4 units. Then, five complete structures of three Au32(SR)22 isomers, one Au28(SR)18, and one Au33(SR)23 isomers can be formed by adding the thiolate ligands to three Au17 cores based on the interfacial interaction between thiolate ligands and gold core in known gold nanoclusters. Density functional theory calculations show that the relative energies of three newly predicted Au32(SR)22 isomers are quite close to two previously reported isomers. In addition, five new 10e gold nanoclusters have large highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps and all-positive harmonic vibration frequencies, indicating their high stabilities.
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Affiliation(s)
- Pengye Liu
- Department
of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenhua Han
- Department
of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Mengke Zheng
- Department
of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenliang Li
- College
of Energy Engineering, Xinjiang Institute
of Engineering, Urumqi 830023, China
| | - Wen Wu Xu
- Department
of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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30
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Han W, Liu P, Zheng M, Zeng XC, Xu WW. Ring Model for Understanding How Interfacial Interaction Dictates the Structures of Protection Motifs and Gold Cores in Thiolate-Protected Gold Nanoclusters. J Phys Chem Lett 2021; 12:3006-3013. [PMID: 33733772 DOI: 10.1021/acs.jpclett.1c00544] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Understanding the effect of interfacial interactions between the protection motifs and gold cores on the stabilities of thiolate-protected gold nanoclusters is still a challenging task. Based on analyses of 95 experimentally crystallized and theoretically predicted thiolate-protected gold nanoclusters, we present a ring model to offer a deeper insight into the interfacial interactions for this class of nanoclusters. In the ring model, all the gold nanoclusters can be generically viewed as a fusion or interlocking of several [Aum(SR)n] (m = 4-8, 10, and 12 and 0 ≤ n ≤ m) rings. Guided by the ring model and the grand unified model, a new Au42(SR)26 isomer is predicted, whose total energy is lower than those of two previously crystallized isomers. The ring model offers a mechanistic understanding of the interactions between the protection ligands and gold cores and practical guidance on predicting new gold nanoclusters for future experimental synthesis and confirmation.
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Affiliation(s)
- Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Pengye Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Mengke Zheng
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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31
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Ding YX, Mao NY, Xu WW, Gao ZG, Zhang Y. [Contribution of measles virus IgG antibody avidity assay to the identification of measles cases]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:544-548. [PMID: 34814427 DOI: 10.3760/cma.j.cn112338-20190527-00373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To evaluate the value of measles IgG antibody avidity assay in identifying the measles cases. Methods: Data from the Measles Surveillance Information System was used to collect laboratory confirmed or discarded cases in 2013-2015, and then tracing back the blood specimens from all measles network laboratories in Tianjin. Measles antibody avidity assay was used to detect and to redefine cases from the discarded ones. Results: A total of 326 measles cases including 267 laboratory-confirmed and 59 discarded cases were enrolled into this study, with 92.33% (301/326) of them aged ≥20 years. Result from the measles IgG antibody avidity assay showed that the ratio of high-avidity was 91.23%(52/57) of the discarded cases, which was significantly higher than 66.95% (158/236) of the laboratory confirmed cases (χ2=13.33, P<0.001). According to the case criterion, 15.25% (9/59) of the discarded cases were redefined as measles cases. Eight out of the nine cases were high-avidity with measles containing vaccine (MCV) vaccination history that named as SVF cases. One in nine cases with low-avidity was with typical clinical symptomatic measles but with no vaccination history of MCV. Conclusion: Measles IgG antibody avidity assay could provide reference serological evidence to reduce the error from those discarded cases caused by false negative results on IgM antibody, when diagnosing the measles cases.
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Affiliation(s)
- Y X Ding
- Expanded Program Immunization Department, Tianjin Center for Diseases Control and Prevention, Tianjin 300011, China
| | - N Y Mao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z G Gao
- Expanded Program Immunization Department, Tianjin Center for Diseases Control and Prevention, Tianjin 300011, China
| | - Y Zhang
- Expanded Program Immunization Department, Tianjin Center for Diseases Control and Prevention, Tianjin 300011, China
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32
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Guo S, Zhang G, Han ZK, Zhang S, Sarker D, Xu WW, Pan X, Li G, Baiker A. Synergistic Effects of Ternary PdO-CeO 2-OMS-2 Catalyst Afford High Catalytic Performance and Stability in the Reduction of NO with CO. ACS Appl Mater Interfaces 2021; 13:622-630. [PMID: 33356099 DOI: 10.1021/acsami.0c18451] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We developed a robust ternary PdO-CeO2-OMS-2 catalyst with excellent catalytic performance in the selective reduction of NO with CO using a strategy based on combining components that synergistically interact leading to an effective abatement of these toxic gases. The catalyst affords 100% selectivity to N2 at the nearly full conversion of NO and CO at 250 °C, high stability in the presence of H2O, and a remarkable SO2 tolerance. To unravel the origin of the excellent catalytic performance, the structural and chemical properties of the PdO-CeO2-OMS-2 nanocomposite were analyzed in the as-prepared and used state of the catalyst, employing a series of pertinent characterization methods and specific catalytic tests. The experimental as well as theoretical results, based on density-functional theory calculations suggest that CO and NO follow different reaction pathways, CO is preferentially adsorbed and oxidized at Pd sites (PdII and Pd0), while NO decomposes on the ceria surface. Lattice oxygen vacancies at the interfacial perimeter of PdO-CeO2 and PdO-OMS-2, and the diffusion of oxygen and oxygen vacancies are proposed to play a critical role in this multicenter reaction system.
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Affiliation(s)
- Song Guo
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Guomei Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Zhong-Kang Han
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 143026, Russia
| | - Shaoyang Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Debalaya Sarker
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 143026, Russia
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Xiaoli Pan
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Gao Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Alfons Baiker
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Hönggerberg, HCl, Zurich CH-8093, Switzerland
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33
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Zhao HT, Peng ZB, Yang XK, Li ZL, Ren MR, Qin Y, Sun XJ, Yu JX, An ZJ, Mao NY, Xu WW, Li ZJ. [Progress in research of specific antibody dynamic characteristics in patients with COVID-19]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:39-43. [PMID: 32932571 DOI: 10.3760/cma.j.cn112338-20200809-01047] [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: 11/05/2022]
Abstract
COVID-19 is an emerging infectious disease caused by SARS-CoV-2. After the infection of the virus, the host immune system is stimulated to produce multifarious specific antibodies to decrease or eliminate effects of the pathogen. Study of the specific antibodies dynamic characteristics in patients with COVID-19 is very important for the understanding and diagnosis of the disease, research and development of vaccine, and planning of prevention and control strategy. This paper reviews and summarizes the domestic and oversea research on dynamic characteristics of specific antibodies of COVID-19 patients, including the antibody producing, duration and level, and its possible influencing factors in order to improve the understanding of the immunological characteristics of COVID-19.
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Affiliation(s)
- H T Zhao
- Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Early-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z B Peng
- Branch of Respiratory Disease, Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Ear-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X K Yang
- Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Early-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z L Li
- Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Early-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M R Ren
- Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Early-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Qin
- Branch of Respiratory Disease, Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Ear-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X J Sun
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J X Yu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z J An
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - N Y Mao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W W Xu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z J Li
- Division of Infectious Disease, Key Laboratory of Infectious Disease Surveillance and Early-warning, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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34
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Liu X, Yao G, Cheng X, Xu J, Cai X, Hu W, Xu WW, Zhang C, Zhu Y. Cd-driven surface reconstruction and photodynamics in gold nanoclusters. Chem Sci 2021; 12:3290-3294. [PMID: 34164098 PMCID: PMC8179392 DOI: 10.1039/d0sc05163b] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/04/2021] [Indexed: 12/14/2022] Open
Abstract
With atomically precise gold nanoclusters acting as a starting unit, substituting one or more gold atoms of the nanocluster with other metals has become an effective strategy to create metal synergy for improving catalytic performances and other properties. However, so far detailed insight into how to design the gold-based nanoclusters to optimize the synergy is still lacking, as atomic-level exchange between the surface-gold (or core-gold) and the incoming heteroatoms is quite challenging without changing other parts. Here we report a Cd-driven reconstruction of Au44(DMBT)28 (DMBT = 3,5-dimethylbenzenethiol), in which four Au2(DMBT)3 staples are precisely replaced by two Au5Cd2(DMBT)12 staples to form Au38Cd4(DMBT)30 with the face-centered cubic inner core retained. With the dual modifications of the surface and electronic structure, the Au38Cd4(DMBT)30 nanocluster exhibits distinct excitonic behaviors and superior photocatalytic performances compared to the parent Au44(DMBT)28 nanocluster.
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Affiliation(s)
- Xu Liu
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
| | - Guo Yao
- School of Physics, Nanjing University Nanjing 210093 China
| | - Xinglian Cheng
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
| | - Jiayu Xu
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
| | - Xiao Cai
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
| | - Weigang Hu
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
| | - Wen Wu Xu
- School of Physical Science and Technology, Ningbo University Ningbo 315211 China
| | - Chunfeng Zhang
- School of Physics, Nanjing University Nanjing 210093 China
| | - Yan Zhu
- School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 China
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35
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Liu P, Han W, Zheng M, Xu WW. Two-dimensional growth mode of thiolate-protected gold nanoclusters Au 28+4n(SR) 20+2n ( n = 0-8): compared with their one-dimensional growth mode. Nanoscale 2020; 12:20677-20683. [PMID: 33043333 DOI: 10.1039/d0nr05439a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, six new atomic structures of thiolate-protected gold nanoclusters, i.e. Au32(SR)20, Au40(SR)26, Au48(SR)30, two Au56(SR)34, and Au60(SR)36, are predicted. Considering these six newly predicted structures and six previously predicted or crystallized Au28(SR)20, Au36(SR)24, Au44(SR)28, Au52(SR)32, and Au60(SR)36 altogether, the two-dimensional (2D) growth mode of Au28+4n(SR)20+2n (n = 0-8) nanoclusters is completely presented to compare with their one-dimensional (1D) growth mode. In Au28+4n(SR)20+2n (n = 0-8) nanoclusters with both 1D and 2D growth modes, the same number of gold-core atoms with different morphologies can be seen. Furthermore, the growth of the gold cores occurs via sequential fusion of one tetrahedral Au4 unit by sharing one gold atom. In addition, density functional theory calculations show that these six newly predicted gold nanoclusters following the 2D growth mode have relative energies very close to those of their isomeric structures following the 1D growth mode, large highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps, and all-positive harmonic vibration frequencies, indicating their high stabilities. Therefore, the complete presentation of the 2D growth mode of Au28+4n(SR)20+2n (n = 0-8) is beneficial not only for a better understanding of the structural growth of gold nanoclusters, but also for a theoretical guidance on the prediction of new stable structures for experimental confirmation.
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Affiliation(s)
- Pengye Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Mengke Zheng
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo 315211, China
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36
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Li H, Zhai H, Zhou C, Song Y, Ke F, Xu WW, Zhu M. Atomically Precise Copper Cluster with Intensely Near-Infrared Luminescence and Its Mechanism. J Phys Chem Lett 2020; 11:4891-4896. [PMID: 32490675 DOI: 10.1021/acs.jpclett.0c01358] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, a new Cu(I) cluster is synthesized and structurally characterized: [Cu11(TBBT)9(PPh3)6](SbF6)2 (where TBBT = 4-tert-butylbenzenethiol). This Cu(I) cluster exhibits good stability and a bright-red emission both in solution (685 nm) and in the solid state (675 nm) with a large Stokes shift (∼280 nm) under ambient conditions. Its absolute quantum yield is 0.22 in the solid state. Temperature-dependent emissions and theoretical calculations suggest that the origin of this cluster luminescence mainly results from a mixture of the metal-ligand charge transfer and the cluster-centered triplet excited states. This work not only opens new opportunities for functional applications of copper clusters but also sheds light on the structure-luminescence relationship.
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Affiliation(s)
- Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
| | - Hongsheng Zhai
- Spectral Measurement and Application of Infrared Material Key Laboratory of Henan Province, School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - Chuanjun Zhou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
| | - Yongbo Song
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
| | - Feng Ke
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, People's Republic of China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
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37
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Xu WW, Lin D, Fu J, Zhao W, Duan X, Zeng XC. Chiral Au 22(SR) 17-: a new ligand-binding strategy for structural prediction of thiolate-protected gold nanocluster. Chem Commun (Camb) 2020; 56:2995-2998. [PMID: 32043505 DOI: 10.1039/d0cc00134a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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
A new atomic structure of chiral thiolate-protected gold nanocluster Au22(SR)17- is predicted on the basis of the new ligand-binding strategy, namely, redistributing the Au-S "staple" motifs on the well-known Au10 core from previously laboratory-determined Au21(SR)15 crystal structure. Density functional theory calculations show that this structure is very likely the realistic structure for the synthesized Au22(SR)17-.
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Affiliation(s)
- Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo, 315211, China
| | - Dongdong Lin
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo, 315211, China
| | - Jie Fu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo, 315211, China
| | - Wenhui Zhao
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo, 315211, China
| | - Xiangmei Duan
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China. and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo, 315211, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA.
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38
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Liao QH, He C, Xu WW, Zhi JF. Role of inflammatory factors in peripheral blood cells of patients with ischemic cerebrovascular disease. J BIOL REG HOMEOS AG 2020; 34:21. [PMID: 32124596 DOI: 10.23812/19-368-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Q H Liao
- Department of Rehabilitation Medicine, First People's Hospital of Jiashan County, Zhejiang Province, Jiashan County, China
| | - C He
- Department of General Practice, First People's Hospital of Jiashan County, Zhejiang Province, Jiashan County, China
| | - W W Xu
- Department of Rehabilitation Medicine, First People's Hospital of Jiashan County, Zhejiang Province, Jiashan County, China
| | - J F Zhi
- Department of Rehabilitation Medicine, First People's Hospital of Jiashan County, Zhejiang Province, Jiashan County, China
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39
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Luo R, Xu WW, Zhang Y, Wang Z, Wang X, Gao Y, Liu P, Chen M. Van der Waals interfacial reconstruction in monolayer transition-metal dichalcogenides and gold heterojunctions. Nat Commun 2020; 11:1011. [PMID: 32081885 PMCID: PMC7035323 DOI: 10.1038/s41467-020-14753-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/29/2020] [Indexed: 11/09/2022] Open
Abstract
The structures and properties of van der Waals (vdW) heterojunctions between semiconducting two-dimensional transition-metal dichalcogenides (2D TMDs) and conductive metals, such as gold, significantly influence the performances of 2D-TMD based electronic devices. Chemical vapor deposition is one of the most promising approaches for large-scale synthesis and fabrication of 2D TMD electronics with naturally formed TMD/metal vdW interfaces. However, the structure and chemistry of the vdW interfaces are less known. Here we report the interfacial reconstruction between TMD monolayers and gold substrates. The participation of sulfur leads to the reconstruction of Au {001} surface with the formation of a metastable Au4S4 interfacial phase which is stabilized by the top MoS2 and WS2 monolayers. Moreover, the enhanced vdW interaction between the reconstructed Au4S4 interfacial phase and TMD monolayers results in the transition from n-type TMD-Au Schottky contact to p-type one with reduced energy barrier height.
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Affiliation(s)
- Ruichun Luo
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Yongzheng Zhang
- WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Ziqian Wang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Xiaodong Wang
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yi Gao
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Pan Liu
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
- WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan.
| | - Mingwei Chen
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
- WPI Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan.
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Xu WW, Duan X, Zeng XC. Modulation of the Double-Helical Cores: A New Strategy for Structural Predictions of Thiolate-Protected Gold Nanoclusters. J Phys Chem Lett 2020; 11:536-540. [PMID: 31903767 DOI: 10.1021/acs.jpclett.9b03515] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A fundamental understanding of the structural growth of thiolate-protected gold nanoclusters not only benefits experimental synthesis but also will advance the methodology for structural predictions and for rational design of highly stable nanoclusters. Herein, we report numerous new structures (11 total) of thiolate-protected gold nanoclusters predicted from theoretical modulation of the double-helical cores of experimentally determined nanoclusters. Among these newly predicted structures, Au32(SR)22, Au40(SR)26, and Au48(SR)30 are obtained by adding a defective layer containing 4 gold atoms on a structural sequence of experimentally crystallized nanoclusters, namely, Au28(SR)20, Au36(SR)24, and Au44(SR)28. The generic growth pattern underlying this sequence of nanoclusters can be viewed as adding the highly stable tetrahedral Au4 unit on the double-helical cores. Likewise, the other eight newly predicted structures, including two groups of isomeric structures corresponding to the sequence of experimentally determined Au28(SR)20, Au36(SR)24, Au44(SR)28, and Au52(SR)32 nanoclusters, are successfully predicted. Density functional theory calculations show that these 11 newly predicted nanoclusters exhibit large highest occupied molecular orbital-lowest unoccupied molecular orbital gaps and all-positive harmonic vibrational frequencies, suggesting their high chemical stabilities. Additional analyses on the structures and properties suggest that these newly predicted nanoclusters are very likely to be synthesized in the laboratory. Confirmation by experiments would validate the new strategy for structural prediction of thiolate-protected gold nanoclusters by taking advantage of a large structure database of crystallized ligand-protected gold nanoclusters with a variety of gold cores.
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Affiliation(s)
- Wen Wu Xu
- Department of Physics, School of Physical Science and Technology , Ningbo University , Ningbo 315211 , China
- Laboratory of Clean Energy Storage and Conversion , Ningbo University , Ningbo 315211 , China
| | - Xiangmei Duan
- Department of Physics, School of Physical Science and Technology , Ningbo University , Ningbo 315211 , China
- Laboratory of Clean Energy Storage and Conversion , Ningbo University , Ningbo 315211 , China
| | - Xiao Cheng Zeng
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588 , United States
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Lin D, Zheng M, Xu WW. Structural predictions of thiolate-protected gold nanoclusters via the redistribution of Au–S “staple” motifs on known cores. Phys Chem Chem Phys 2020; 22:16624-16629. [DOI: 10.1039/d0cp01661f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Four structures of gold nanoclusters were predicted via the redistribution of Au–S motifs on known cores.
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Affiliation(s)
- Dongdong Lin
- Department of Physics
- School of Physical Science and Technology
- Ningbo University
- Ningbo 315211
- China
| | - Mengke Zheng
- Department of Physics
- School of Physical Science and Technology
- Ningbo University
- Ningbo 315211
- China
| | - Wen Wu Xu
- Department of Physics
- School of Physical Science and Technology
- Ningbo University
- Ningbo 315211
- China
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Zhou C, Li H, Song Y, Ke F, Xu WW, Zhu M. Insights into the effect of surface coordination on the structure and properties of Au 13Cu 2 nanoclusters. Nanoscale 2019; 11:19393-19397. [PMID: 31329204 DOI: 10.1039/c9nr04457d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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
Comparable systems are of great significance for understanding the structure-property relationship. Herein, a new Au13Cu2 nanocluster protected by phenylethanethiol (PET) and triphenylphosphine (TPP) is synthesized and structurally determined, including an icosahedral Au13 and two CuS3 configurations. Based on previous work, a comparable system was formed-only the surface coordination of Cu atoms changes from Cu-N to Cu-S, which results in a tremendous change in the optical properties. Based on this, the effect of the coordination mode on the structure and optical properties was primarily investigated in both experiment and theory. And the results demonstrate that changing the coordination mode from Cu-N to Cu-S has a significant effect on the electronic structure. This work will offer new insights into ligand engineering.
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Affiliation(s)
- Chuanjun Zhou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
| | - Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
| | - Yongbo Song
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
| | - Feng Ke
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
| | - Wen Wu Xu
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China.
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
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Abstract
It remains a pressing task to search for new two-dimensional (2D) semiconducting materials for future-generation electronic applications. By using density functional theory computations and global structure prediction methods, we demonstrate two new gold sulfide monolayers (2D Au2S and AuS), both exhibiting excellent electronic properties and high stabilities. All the gold sulfide monolayers are semiconductors with band gaps in the range 1.0-3.6 eV. In particular, the α-Au2S monolayer is predicted to possess a direct band gap of 1.0 eV and extremely high electron and hole mobilities of 8.45 × 104 and 0.40 × 104 cm2 V-1 S-1, respectively. The phonon dispersion calculations and ab initio molecular dynamics simulations indicate that the gold sulfide monolayers exhibit robust dynamical and thermal stabilities. Moreover, the α-Au2S monolayer appears to show strong oxidation resistibility. The novel electronic properties, coupled with structural and chemical stabilities, endow the new gold sulfide monolayers to be highly promising for future applications in nanoelectronics.
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Affiliation(s)
- Qisheng Wu
- School of Physics , Southeast University , Nanjing 211189 , P. R. China
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588 , United States
| | - Wen Wu Xu
- School of Physical Science and Technology , Ningbo University , Ningbo 315211 , P. R. China
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588 , United States
| | - Dongdong Lin
- School of Physical Science and Technology , Ningbo University , Ningbo 315211 , P. R. China
| | - Jinlan Wang
- School of Physics , Southeast University , Nanjing 211189 , P. R. China
| | - Xiao Cheng Zeng
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588 , United States
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Abstract
Understanding special stability of numerous ligand-protected gold nanoclusters has always been an active area of research. In the past few decades, several theoretical models, including the polyhedral skeletal electron pair theory (PSEPT), superatom complex (SAC), and superatom network (SAN), among others, have been developed for better understanding the stabilities and structures of selected ligand-protected gold nanoclusters. This Account overviews the recently proposed grand unified model (GUM) to offer some new insights into the structures and growth mechanism of nearly all crystallized and predicted ligand-protected gold nanoclusters. The main conceptual advancement of the GUM is identification of the duet and octet rules on the basis of the "big data" of 70+ reported ligand-protected gold nanoclusters. According to the two empirical rules, the cores of the gold nanoclusters can be regarded as being composed of two kinds of elementary blocks (namely, triangle Au3 and tetrahedron Au4), each having 2 e closed-shell valence electrons (referred as Au3(2 e) and Au4(2 e)), as well as the secondary block (icosahedron Au13) with 8 e closed-shell valence electrons (referred as Au13(8 e)). The two elementary blocks (Au3(2 e) and Au4(2 e)) and the secondary block (Au13(8 e)), from electron counting point of view, can be regarded as an analogy of the highly stable noble-gas atoms of He and Ne, respectively. In each elementary block, the Au atoms exhibit three different valence-electron states (i.e., 1 e, 0.5 e, and 0 e), depending on the type of ligands bonded with these Au atoms. Such three valence-electron states are coined as three "flavors" of gold (namely, bottom, middle, and top "flavor"), a term borrowed from the quark model in the particle physics. Upon application of the duet and octet rules with accounting the three valence states of gold atoms, the Au3(2 e), Au4(2 e), and Au13(8 e) blocks can exhibit 10 (denoted as Δ1-Δ10), 15 (denoted as T1-T15), and 91 (denoted as I1-I91) variants of valence states, respectively. When packing these blocks (with distinct electronic states) together, it forms the gold core of ligand-protected gold nanocluster. As such, the special stabilities of the ligand-protected gold nanoclusters are explained based on the local stability of each block. With GUM, rich and complex structures of ligand-protected gold nanoclusters have been analyzed through structure anatomy. Moreover, the growth of these clusters can be simply viewed as sequential addition of the blocks, rather than as addition of the gold atoms. Another useful application of the GUM is to analyze the structural isomerism. The three types of isomerism for the gold nanoclusters, i.e., core, staple, and complex isomerism, can be considered as an analogy of chain, point, and functional isomerism (known in organic chemistry), respectively. GUM can be applied to predict new clusters, thereby guiding experimental synthesis. Indeed, a number of ligand-protected gold nanoclusters with high stabilities were rationally designed based on the GUM.
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Affiliation(s)
- Wen Wu Xu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Department of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
- Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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Mou JJ, Qi MY, Li CS, Zheng HY, Chen M, Zhou JH, He JL, Xu WW, Xu ST, Xu XG. [Characterization analysis of gM, gL genes of varicella zoster virus in six provinces of China]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:419-423. [PMID: 29614611 DOI: 10.3760/cma.j.issn.0253-9624.2018.04.016] [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 the genetic characterization of glycoprotein M(gM.),glycoprotein L(gL) of varicella zoster virus. Methods: According to the program of "Ministry of Science and Technology of China" , Based on the 12 suspected VZV patients monitored in Beijing (1 case), Shanghai (5 cases), Jilin (2 cases), Qinghai (1 case), Guangdong (2 case) and Sichuan (case) in 2007-2015. A total of 12 Vesicle fluid and throat swab samples were collected. Positive samples were identified by Agarose gel electrophoresis and two glycoprotein genes were amplified by polymerase chain reaction (PCR). Nucleotide sequences were determined and analyzed by PCR amplification of VZV positive specimens V-OKA-BK of the domestic varicella attenuated live vaccine and the Varilrix-1 of the imported attenuated live vaccine. Nucleotide sequences of VZV positive specimens, vaccine strains (V-OKA-BK, varilrix-1) and GenBank foreign wild strains (41 strains), parent strains (P-oka), vaccine strains (V-oka, Varilrix, Varivax) were compared using BioEdit and MEGA 5.0. Results: 12 specimens were VZV positive. Compared with the vaccine strains and the parent strains, the GM gene of 1 positive specimen had radical mutation at 86686 sites, which resulted in amino acid mutation, 5 positive specimens had base mutation at 87844 sites, and 30 strains of foreign wild strains had the same variation at 87 844 sites. 1 positive specimens of gL gene in 101245 sites had base mutation, and led to amino acid mutation, 6 positive specimens at 101624, 101625, 101626 sites had base of loss and the foreign wild strains in these 3 sites had the same variation. Compared with the vaccine strains, the nucleotide and amino acid homology of gM of 12 VZV positive specimens were 99.2%-100% and 98.2%-100%, respectively, and gL of those were 99.3%-100% and 98.6%-100%, respectively. Compared with 41 strains of foreign wild strains, homology of gM's nucleotides and amino acid were 99.3%-100% and 98.5%-100%, respectively; 99.1%-100% and 98.6%-100% for gL. The results of phylogenetic analysis showed that 7 VZV positive samples were on the same branch with 4 vaccine strains and p-oka strain. Based on gL, 12 VZV positive samples were on the same branch as the vaccine strains and p-oka strain. Conclusion: This study demonstrates that the genes of gM, gL are highly conserved and remain stable immunogen, which may be involved in the attenuation of VZV and need to be further researched.
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Affiliation(s)
- J J Mou
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, China
| | - M Y Qi
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, China
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Abstract
The isomerism in thiolate-protected gold (Au) nanoclusters is important for the understanding of structure-property correlations and the design of Au nanoclusters with specific structures and properties. Although recent studies have identified stereoisomerism, the understanding of structural isomerism is still lacking. Herein, we identified three distinct mechanisms of structural isomerism (i.e., core isomerism, staple isomerism, and complex isomerism) based on the crystallized isomers of thiolate-protected Au nanoclusters, and these mechanisms can be viewed as analogous to those of the structural isomerism in organic molecules (i.e., chain isomerism, point isomerism, and functional isomerism). Using the discovered core isomerism and staple isomerism, two Au28(SR)20 isomers are predicted and their synthesis feasibilities are illuminated. These new insights into the structural isomerism can facilitate rational design of new isomers of thiolate-protected Au nanoclusters and guide future experimental synthesis.
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Affiliation(s)
- Wen Wu Xu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
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Wu Q, Xu WW, Ma L, Wang J, Zeng XC. Two-Dimensional AuMX 2 (M = Al, Ga, In; X = S, Se) Monolayers Featuring Intracrystalline Aurophilic Interactions with Novel Electronic and Optical Properties. ACS Appl Mater Interfaces 2018; 10:16739-16746. [PMID: 29687988 DOI: 10.1021/acsami.8b02820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Aurophilicity, known as aurophilic interaction, is a strong attractive van der Waals interaction between cationic gold(I) centers, whose strength is comparable to the hydrogen bond. Here, we show that aurophilicity can serve as an engineering approach to expand the structural dimensionality for nanomaterials design. Specifically, based on a global-structure search method and density functional theory calculations, we predict a series of stable two-dimensional (2D) AuMX2 (M = Al, Ga, In; X = S, Se) structures featuring intracrystalline aurophilic interactions. All the AuMX2 monolayers designed are semiconductors with moderate band gaps, excellent carrier mobilities, and good optical properties. The intriguing chemistry of aurophilicity coupled with novel electronic properties render AuMX2 monolayers a potentially new series of 2D materials that are of fundamental importance in gold chemistry and of technological importance for nanoelectronics.
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Affiliation(s)
- Qisheng Wu
- School of Physics , Southeast University , Nanjing 211189 , P. R. China
| | - Wen Wu Xu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics , Chinese Academy of Sciences , Shanghai 201800 , P. R. China
| | | | - Jinlan Wang
- School of Physics , Southeast University , Nanjing 211189 , P. R. China
- Synergetic Innovation Center for Quantum Effects and Applications (SICQEA) , Hunan Normal University , Changsha 410081 , Hunan , P. R. China
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Xin WS, Zhang F, Yan GR, Xu WW, Xiao SJ, Zhang ZY, Huang LS. A whole genome sequence association study for puberty in a large Duroc × Erhualian F2 population. Anim Genet 2017; 49:29-35. [PMID: 29194674 DOI: 10.1111/age.12623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2017] [Indexed: 01/30/2023]
Abstract
A large proportion of gilts and sows are culled from reproduction populations because of anestrus and pubertal reproductive failure. Selecting early onset of puberty gilts has a favorable effect on sows' reproductivity. However, age at puberty is hard to be routinely measured in commercial herds. With molecular genetic predictors, identifying individuals that have a propensity for early onset of puberty can be simplified. We previously performed genome scanning and a genome-wide association study for puberty in an F2 resource population using 183 microsatellites and 62 125 SNPs respectively. The detection power and resolution of identified quantitative trait loci were very low. Herein, we re-sequenced 19 founders of the F2 resource population in high coverage, and whole genome sequences of F2 individuals were imputed to perform an association study for reproductive traits. A total of 2339 SNPs associated with pubertal reproductive failure were identified in the region of 30.94-40.74 Mb on SSC7, with the top one, positioned at 33.36 Mb, explaining 16% of the phenotypic variances. We improved the magnitude of the P-value by 10E+5 to 10E+7 using the whole genome sequence rather than using low/middle density markers as in previous studies, and we narrowed down the QTL confidence interval to 5.25 Mb. Combining the annotation of gene function, RAB23 and BAK1 were perceived as the most compelling candidate genes. The identified loci may be useful in culling sows failing to show estrus by marker-assisted selection to increase reproductive efficiency of swine herds.
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Affiliation(s)
- W S Xin
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - F Zhang
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - G R Yan
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - W W Xu
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - S J Xiao
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Z Y Zhang
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - L S Huang
- State Key Laboratory for Swine Genetics, Breeding and Production Technology, Jiangxi Agricultural University, Nanchang, 330045, China
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Affiliation(s)
- Wen Wu Xu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China.,Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.,Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China. .,Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai, 201204, China.
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50
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Zhong Y, Yang J, Xu WW, Wang Y, Zheng CC, Li B, He QY. KCTD12 promotes tumorigenesis by facilitating CDC25B/CDK1/Aurora A-dependent G2/M transition. Oncogene 2017; 36:6177-6189. [PMID: 28869606 PMCID: PMC5671937 DOI: 10.1038/onc.2017.287] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 06/19/2017] [Accepted: 07/14/2017] [Indexed: 02/06/2023]
Abstract
Cell cycle dysregulation leads to uncontrolled cell proliferation and tumorigenesis. Understanding the molecular mechanisms underlying cell cycle progression can provide clues leading to the identification of key proteins involved in cancer development. In this study, we performed proteomics analysis to identify novel regulators of the cell cycle. We found that potassium channel tetramerization domain containing 12 (KCTD12) was significantly upregulated in M phase compared with S phase. We also found that KCTD12 overexpression not only facilitated the G2/M transition and induced cancer cell proliferation, but also promoted the growth of subcutaneous tumors and Ki-67 proliferation index in mice. Regarding the mechanism underlying these phenomena, cyclin-dependent kinase 1 (CDK1) was identified as an interacting partner of KCTD12 by immunoprecipitation and mass spectrometry analysis, which showed that KCTD12 activated CDK1 and Aurora kinase A (Aurora A) and that the effects of KCTD12 on CDK1 phosphorylation and cell proliferation were abrogated by cell division cycle 25B (CDC25B) silencing. In addition, Aurora A phosphorylated KCTD12 at serine 243, thereby initiating a positive feedback loop necessary for KCTD12 to exert its cancer-promoting effects. Furthermore, we analyzed the expression levels of various genes and the correlations between the expression of these genes and survival using tumor tissue microarray and Gene Expression Omnibus (GEO) data sets. The data showed that KCTD12 expression was significantly upregulated in cervical and lung cancers. More importantly, high KCTD12 expression was associated with larger tumor sizes, higher pathological stages and poor patient survival. Collectively, our study demonstrate that KCTD12 binds to CDC25B and activates CDK1 and Aurora A to facilitate the G2/M transition and promote tumorigenesis and that Aurora A phosphorylates KCTD12 at serine 243 to trigger a positive feedback loop, thereby potentiating the effects of KCTD12. Thus, the KCTD12-CDC25B-CDK1-Aurora A axis has important implications for cancer diagnoses and prognoses.
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Affiliation(s)
- Y Zhong
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China.,Department of Pathology, Medical College, Jinan University, Guangzhou, China
| | - J Yang
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - W W Xu
- Institute of Biomedicine, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, China
| | - Y Wang
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - C-C Zheng
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - B Li
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Q-Y He
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
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