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Surkalim DL, Clare PJ, Eres R, Gebel K, Bauman AE, Ding D. Exercise to socialize? Bidirectional relationships between physical activity and loneliness in middle-aged and older American adults. Am J Epidemiol 2024:kwae001. [PMID: 38319704 DOI: 10.1093/aje/kwae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 12/08/2023] [Indexed: 02/07/2024] Open
Abstract
Physical inactivity and loneliness are both associated with health risks and can affect each other through various social and behavioral mechanisms. However, current evidence on this relationship is equivocal and mostly based on cross-sectional data. This longitudinal study aims to determine whether current levels of physical activity (moderate- and vigorous-intensity) and loneliness are associated with future respective states of themselves and each other. Data from waves 6-14 (2002-2018) of the Health and Retirement Study were used (n=20,134) in a mixed-effects and random intercept cross-lagged panel model. Analysis showed that current loneliness and physical activity were associated with each future respective state. Additionally, weekly participation in moderate-intensity, but not vigorous-intensity, physical activity was associated with a lower likelihood of becoming lonely in the future (RR: 0.94; 95% CI: 0.90-0.99). However, changes in physical activity were not associated with deviation from a person's typical level of loneliness (vigorous-intensity mean deviation (MD): 0.00; 95% CI: -0.04-0.03, moderate-intensity MD: 0.01; 95% CI: -0.03-0.04). Loneliness was not associated with moderate- or vigorous-intensity physical activity in subsequent waves. This suggests that while lower physical activity levels can be associated with future loneliness, changing levels of physical activity has little impact on loneliness at the individual level.
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Affiliation(s)
- D L Surkalim
- Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- Charles Perkins Centre (D17), The University of Sydney, Camperdown, New South Wales, Australia
| | - P J Clare
- Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- National Drug and Alcohol Research Centre, UNSW Sydney, Sydney, New South Wales, Australia
| | - R Eres
- Neurodisability and Rehabilitation, Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
| | - K Gebel
- School of Public Health, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia
| | - A E Bauman
- Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- Charles Perkins Centre (D17), The University of Sydney, Camperdown, New South Wales, Australia
| | - D Ding
- Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- Charles Perkins Centre (D17), The University of Sydney, Camperdown, New South Wales, Australia
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2
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Ye X, Ding D, Chen Y, Liu C, Li Z, Lou B, Zhou Y. Identification of RNA silencing suppressor encoded by citrus chlorotic dwarf-associated virus. Front Microbiol 2024; 15:1328289. [PMID: 38333582 PMCID: PMC10850569 DOI: 10.3389/fmicb.2024.1328289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/04/2024] [Indexed: 02/10/2024] Open
Abstract
Introduction Citrus chlorotic dwarf-associated virus (CCDaV) is an economically important citrus virus associated with leaf curling, deformation, and chlorosis found in China. Plants have evolved RNA silencing to defend against viral infections; however, the mechanism by which CCDaV suppresses RNA silencing in citrus remains unknown. Methods Six proteins encoded by CCDaV were ectopically expressed in Nicotiana benthamiana 16c using the pCHF3 vector to identify RNA-silencing suppression activities. Results V2 protein encoded by CCDaV suppressed local RNA silencing and systemic RNA silencing triggered by GFP RNA, but did not impede short-distance movement of the RNA silencing signal in N. benthamiana 16c. GFP fluorescence observations showed that the ability of V2 protein to suppress RNA silencing was weaker than tomato bushy stunt virus P19. Deletion analysis showed that the putative nuclear localization signal (NLS, 25-54 aa) was involved in the RNA silencing suppression activity of V2 protein. Furthermore, V2 protein cannot block dsRNA-triggered RNA silencing. The subcellular localization assay suggested that V2 protein was localized to nucleus of N. benthamiana. Conclusion Overall, the results of this study demonstrate that CCDaV-V2 acts as an activity of silencing suppression. This is the first reported RNA-silencing suppressor encoded by Citlodavirus and will be valuable in revealing the molecular mechanism of CCDaV infection.
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Affiliation(s)
- Xiao Ye
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City/Citrus Research Institute, Southwest University, Chongqing, China
| | - Dongdong Ding
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City/Citrus Research Institute, Southwest University, Chongqing, China
| | - Yuan Chen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City/Citrus Research Institute, Southwest University, Chongqing, China
| | - Chuang Liu
- Lemon Industry Development Center, Anyue, Sichuan, China
| | - Zhongan Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City/Citrus Research Institute, Southwest University, Chongqing, China
| | - Binghai Lou
- Guangxi Citrus Breeding and Cultivation Research Center of Engineering Technology/Guangxi Academy of Specialty Crops, Guilin, Guangxi, China
| | - Yan Zhou
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City/Citrus Research Institute, Southwest University, Chongqing, China
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Fairman AD, Walko PF, Ding D, Morris L, Boateng J, Murphy K, Terhorst L. Reliability and validity testing of the ASSIST functional performance index. Assist Technol 2023:1-8. [PMID: 37552786 DOI: 10.1080/10400435.2023.2245004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/10/2023] Open
Abstract
Reliability and validity testing of the ASSIST Functional Performance Index (AFPI) was conducted, focusing on persons with physical disabilities (PwPD). The AFPI was iteratively developed to assess persons' needs for Mainstream Smart Home Technologies (MSHT) as Assistive Technology (AT) and to measure the impact of a service delivery model for MSHT. The AFPI consists of 46 items organized by functional domains. A total of N = 22 PwPD completed the AFPI twice. The median response time between these two time points was four days. Test-retest reliability of overall scores was assessed using the Intraclass Correlation Coefficient model (ICC, 3.1). The weighted kappa coefficient was applied to conduct an item analysis, demonstrating moderate to substantial agreement in all but one of the items. During the second administration, validity was established by correlating the number of hours of assistance and total AFPI scores with the SCI-FI Self-Care and Basic Mobility Short Form Questionnaires. Results indicate that the AFPI demonstrates good to very good validity as an assessment tool and outcome measure in recommending and evaluating the impact of MSHT for PwPD. Future studies, including more participants and persons with cognitive and sensory disabilities, may further establish the clinical utility of the AFPI.
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Affiliation(s)
- A D Fairman
- Department of Occupational Therapy, Johnson & Wales University, Providence, Rhode Island, USA
- Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - P Foschi Walko
- Department of Occupational Therapy, Johnson & Wales University, Providence, Rhode Island, USA
| | - D Ding
- Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - L Morris
- Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - J Boateng
- Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - K Murphy
- Department of Occupational Therapy, Johnson & Wales University, Providence, Rhode Island, USA
- Occupational Therapy Department, West Bay Collaborative, Warwick, Rhode Island, USA
| | - L Terhorst
- Department of Occupational Therapy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Zheng L, Dang Z, Ding D, Liu Z, Dai Y, Lu J, Fang Z. Electron-Induced Chirality-Selective Routing of Valley Photons via Metallic Nanostructure. Adv Mater 2023; 35:e2204908. [PMID: 36877955 DOI: 10.1002/adma.202204908] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Valleytronics in 2D transition metal dichalcogenides has raised a great impact in nanophotonic information processing and transport as it provides the pseudospin degree of freedom for carrier control. The imbalance of carrier occupation in inequivalent valleys can be achieved by external stimulations such as helical light and electric field. With metasurfaces, it is feasible to separate the valley exciton in real space and momentum space, which is significant for logical nanophotonic circuits. However, the control of valley-separated far-field emission by a single nanostructure is rarely reported, despite the fact that it is crucial for subwavelength research of valley-dependent directional emission. Here, it is demonstrated that the electron beam permits the chirality-selective routing of valley photons in a monolayer WS2 with Au nanostructures. The electron beam can locally excite valley excitons and regulate the coupling between excitons and nanostructures, hence controlling the interference effect of multipolar electric modes in nanostructures. Therefore, the separation degree can be modified by steering the electron beam, exhibiting the capability of subwavelength control of valley separation. This work provides a novel method to create and resolve the variation of valley emission distribution in momentum space, paving the way for the design of future nanophotonic integrated devices.
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Affiliation(s)
- Liheng Zheng
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Zhibo Dang
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Dongdong Ding
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Zhixin Liu
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Yuchen Dai
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Jianming Lu
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Zheyu Fang
- School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, 100871, P. R. China
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5
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Tian H, Ma Y, Li Z, Cheng M, Ning S, Han E, Xu M, Zhang PF, Zhao K, Li R, Zou Y, Liao P, Yu S, Li X, Wang J, Liu S, Li Y, Huang X, Yao Z, Ding D, Guo J, Huang Y, Lu J, Han Y, Wang Z, Cheng ZG, Liu J, Xu Z, Liu K, Gao P, Jiang Y, Lin L, Zhao X, Wang L, Bai X, Fu W, Wang JY, Li M, Lei T, Zhang Y, Hou Y, Pei J, Pennycook SJ, Wang E, Chen J, Zhou W, Liu L. Disorder-tuned conductivity in amorphous monolayer carbon. Nature 2023; 615:56-61. [PMID: 36859579 DOI: 10.1038/s41586-022-05617-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 12/01/2022] [Indexed: 03/03/2023]
Abstract
Correlating atomic configurations-specifically, degree of disorder (DOD)-of an amorphous solid with properties is a long-standing riddle in materials science and condensed matter physics, owing to difficulties in determining precise atomic positions in 3D structures1-5. To this end, 2D systems provide insight to the puzzle by allowing straightforward imaging of all atoms6,7. Direct imaging of amorphous monolayer carbon (AMC) grown by laser-assisted depositions has resolved atomic configurations, supporting the modern crystallite view of vitreous solids over random network theory8. Nevertheless, a causal link between atomic-scale structures and macroscopic properties remains elusive. Here we report facile tuning of DOD and electrical conductivity in AMC films by varying growth temperatures. Specifically, the pyrolysis threshold temperature is the key to growing variable-range-hopping conductive AMC with medium-range order (MRO), whereas increasing the temperature by 25 °C results in AMC losing MRO and becoming electrically insulating, with an increase in sheet resistance of 109 times. Beyond visualizing highly distorted nanocrystallites embedded in a continuous random network, atomic-resolution electron microscopy shows the absence/presence of MRO and temperature-dependent densities of nanocrystallites, two order parameters proposed to fully describe DOD. Numerical calculations establish the conductivity diagram as a function of these two parameters, directly linking microstructures to electrical properties. Our work represents an important step towards understanding the structure-property relationship of amorphous materials at the fundamental level and paves the way to electronic devices using 2D amorphous materials.
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Affiliation(s)
- Huifeng Tian
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Yinhang Ma
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, China
| | - Zhenjiang Li
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Mouyang Cheng
- School of Physics, Peking University, Beijing, China
| | - Shoucong Ning
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Erxun Han
- School of Physics, Peking University, Beijing, China
| | - Mingquan Xu
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, China
| | - Peng-Fei Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Kexiang Zhao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Ruijie Li
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Yuting Zou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - PeiChi Liao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Shulei Yu
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Xiaomei Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Jianlin Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Shizhuo Liu
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Yifei Li
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Xinyu Huang
- School of Materials Science and Engineering, Peking University, Beijing, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Zhixin Yao
- School of Materials Science and Engineering, Peking University, Beijing, China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, China
| | - Dongdong Ding
- School of Physics, Peking University, Beijing, China
| | - Junjie Guo
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, China
| | - Yuan Huang
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Jianming Lu
- School of Physics, Peking University, Beijing, China
| | - Yuyan Han
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, China
| | - Zhaosheng Wang
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, China
| | - Zhi Gang Cheng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Junjiang Liu
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Zhi Xu
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Kaihui Liu
- School of Physics, Peking University, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China
| | - Peng Gao
- Songshan Lake Materials Laboratory, Dongguan, China
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Ying Jiang
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Li Lin
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Xiaoxu Zhao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Lifen Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Xuedong Bai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Wangyang Fu
- School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Jie-Yu Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Maozhi Li
- Department of Physics, Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-Nano Devices, Renmin University of China, Beijing, China
| | - Ting Lei
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Yanfeng Zhang
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Yanglong Hou
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Jian Pei
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Stephen J Pennycook
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, China
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Enge Wang
- Songshan Lake Materials Laboratory, Dongguan, China
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
- School of Physics, Liaoning University, Shenyang, China
| | - Ji Chen
- School of Physics, Peking University, Beijing, China.
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China.
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing, China.
| | - Wu Zhou
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, China.
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, China.
| | - Lei Liu
- School of Materials Science and Engineering, Peking University, Beijing, China.
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China.
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Li S, Li L, Min S, Liu S, Qin Z, Xiong Z, Xu J, Wang B, Ding D, Zhao S. [Soybean isoflavones alleviate cerebral ischemia/reperfusion injury in rats by inhibiting ferroptosis and inflammatory cascade reaction]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:323-330. [PMID: 36946055 PMCID: PMC10034535 DOI: 10.12122/j.issn.1673-4254.2023.02.23] [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: 03/23/2023]
Abstract
OBJECTIVE To explore the mechanism that mediates the effect of soybean isoflavones (SI) against cerebral ischemia/reperfusion (I/R) injury in light of the regulation of regional cerebral blood flow (rCBF), ferroptosis, inflammatory response and blood-brain barrier (BBB) permeability. METHODS A total of 120 male SD rats were equally randomized into sham-operated group (Sham group), cerebral I/R injury group and SI pretreatment group (SI group). Focal cerebral I/R injury was induced in the latter two groups using a modified monofilament occlusion technique, and the intraoperative changes of real-time cerebral cortex blood flow were monitored using a laser Doppler flowmeter (LDF). The postoperative changes of cerebral pathological morphology and the ultrastructure of the neurons and the BBB were observed with optical and transmission electron microscopy. The neurological deficits of the rats was assessed, and the severities of cerebral infarction, brain edema and BBB disruption were quantified. The contents of Fe2+, GSH, MDA and MPO in the ischemic penumbra were determined with spectrophotometric tests. Serum levels of TNF-α and IL-1βwere analyzed using ELISA, and the expressions of GPX4, MMP-9 and occludin around the lesion were detected with Western blotting and immunohistochemistry. RESULTS The rCBF was sharply reduced in the rats in I/R group and SI group after successful insertion of the monofilament. Compared with those in Sham group, the rats in I/R group showed significantly increased neurological deficit scores, cerebral infarction volume, brain water content and Evans blue permeability (P < 0.01), decreased Fe2+ level, increased MDA level, decreased GSH content and GPX4 expression (P < 0.01), increased MPO content and serum levels of TNF-α and IL-1β (P < 0.01), increased MMP-9 expression and lowered occludin expression (P < 0.01). All these changes were significantly ameliorated in rats pretreated with IS prior to I/R injury (P < 0.05 or 0.01). CONCLUSION SI preconditioning reduces cerebral I/R injury in rats possibly by improving rCBF, inhibiting ferroptosis and inflammatory response and protecting the BBB.
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Affiliation(s)
- S Li
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - L Li
- Department of Pathophysiology, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - S Min
- Department of Pathophysiology, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - S Liu
- Department of Pathophysiology, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Z Qin
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Z Xiong
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - J Xu
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - B Wang
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - D Ding
- Department of Pathophysiology, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - S Zhao
- Department of Pathophysiology, Bengbu Medical College, Bengbu 233000, China
- Key Laboratory of Basic and Clinical Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
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7
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Li P, Wang X, Ding D, Gao Z, Fang W, Zhang C, He C, Liu X. Surface Decarburization Depth Detection in Rods of 60Si2Mn Steel with Magnetic Barkhausen Noise Technique. Sensors (Basel) 2023; 23:503. [PMID: 36617102 PMCID: PMC9823766 DOI: 10.3390/s23010503] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/30/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
Magnetic Barkhausen noise (MBN), sensitive to the microstructure of materials, can be applied in the surface decarburization depth detection of ferromagnetic specimens. However, the effects of core microstructures on the determination results of decarburization depth have not been explored. In this study, MBN was employed to evaluate the magnetic properties of the decarburized 60Si2Mn spring steels with martensitic and pearlitic core microstructures. Spring steel samples were austenitized at different times to generate different decarburization depths. Seven magnetic features were extracted from the MBN butterfly profiles. We used the variation coefficient, linear correlation coefficient, and normalized sensitivity to discuss the influence of the core microstructures on these seven features. The different core microstructures led to a large difference in the ability of MBN features to characterize the decarburization layer depth. However, three features of MBN butterfly profiles demonstrated an approximately linear dependency (linear correlation coefficient > 94%) on surface decarburization depth and monotonically increased with the increase in depth in both core microstructures of spring steels.
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Affiliation(s)
- Peng Li
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Xianxian Wang
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Dongdong Ding
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Zhaoxiang Gao
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Wen Fang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Chaolei Zhang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Cunfu He
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Xiucheng Liu
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
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8
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Lei Q, Xiao Z, Wu W, Liang X, Zhao Q, Ding D, Deng W. The Joint Effect of Body Mass Index and Serum Lipid Levels on Incident Dementia among Community-Dwelling Older Adults. J Nutr Health Aging 2023; 27:1118-1126. [PMID: 37997734 DOI: 10.1007/s12603-023-2027-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/11/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVES This study aimed to explore the joint effect of body mass index (BMI) and serum lipids levels on incident dementia. METHODS We prospectively followed up with 1,627 dementia-free community residents aged ≥60 for 5.7 years on average. At baseline, weight, and height were measured, and total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were detected in serum. Demographic characteristics were collected through questionnaires. Dementia was based on consensus diagnosis of neurologists and neuropsychologists using DSM-IV criteria. Additive Cox proportional model was used to assess the exposure-response relationship between BMI and serum lipid levels and dementia risk. Interactions and further classifications of BMI and serum lipid levels were further presented by bivariate surface models and decision-tree models. RESULTS The joint effects of TC with BMI, TG with BMI, and LDL-C with BMI on the risk of incident dementia shared a similar pattern, different from their independent exposure-response curves. The joint effect of HDL-C with BMI showed an S-surface but without statistical significance. Participants with TC<5.4 mmol/L and BMI<21 kg/m2 (Hazard Ratio(HR) 1.93, 95% Confidence Interval (CI) 1.05-3.53), TC<5.4 mmol/L and BMI≥21 kg/m2 (HR 1.73, 95% CI 1.09-2.72), and TC≥5.4 mmol/L and BMI<21 kg/m2 (HR 4.02, 95% CI 2.10-7.71) were identified to have the increased risk of incident dementia compared to those with TC≥5.4 mmol/L and BMI≥21 kg/m2. Participants with TG<1.7 mmol/L and BMI<21 kg/m2 had an increased risk of incident dementia compared to those with TG≥1.7 mmol/L and BMI≥21 kg/m2 (HR 1.98, 95%CI 1.17-3.3). Participants with LDL-C≥3.3 mmol/L and BMI<21 kg/m2 were identified to have an increased risk of incident dementia compared to those with LDL-C≥3.3 mmol/L and BMI≥21 kg/m2 (HR 3.33, 95%CI 1.64-6.78). CONCLUSIONS Our study showed that low BMI combined with low or high levels of serum lipids may increase the risk of dementia among older adults. This finding suggests the potential impacts of these two metabolic indexes on the risk of dementia.
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Affiliation(s)
- Q Lei
- Wei Deng, 138 Yixueyuan Rd., Department of Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China, ; Ding Ding, 12 Wulumuqi Zhong Rd., Institute of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China,
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9
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Zheng J, Arif M, He X, Ding D, Zhang S, Ni X, Li C. Plant community assembly is jointly shaped by environmental and dispersal filtering along elevation gradients in a semiarid area, China. Front Plant Sci 2022; 13:1041742. [PMID: 36507391 PMCID: PMC9732563 DOI: 10.3389/fpls.2022.1041742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Environmental filtering (EF) and dispersal filtering (DF) are widely known to shape plant community assembly. Particularly in arid and semi-arid mountainous regions, however, it remains unclear whether EF or DF dominate in the community assembly of different life forms or how they interact along elevational gradients. This research aims to reveal how different ecological processes influence herbaceous and woody community assembly and how they respond to various environmental drivers and elevational gradients. Here we integrated taxonomic diversity (TD), phylogenetic diversity (PD), and ecological drivers across an elevational gradient of 1,420 m in the Helan Mountain Nature Reserve, in typical arid and semi-arid areas of China. This study showed that the TD and PD of herbaceous communities significantly increase linearly with changing elevation gradients, while woody 'TD' showed a unimodal pattern, and there was little relationship between woody 'PD' and elevation. Herbaceous species exhibited significant phylogenetic clustering at low elevations, where they were influenced by climate, aspect, and tree cover. However, woody species exhibited random patterns across elevations. Herbaceous and woody species' taxonomic and phylogenetic beta diversity is governed primarily by spatial turnover rather than nestedness. Spatial turnover is caused primarily by EF and DF's combined influence, but their relative importance differs between herbaceous and woody communities. Therefore, we conclude that the responses of herbaceous and woody plants along elevation gradients in the Helan Mountains are decoupled due to their different adaptation strategies to climate factors in the drylands. These findings are important for understanding the assembly mechanisms driving plant communities in dryland under the context of dramatic increases in drought driven by climate warming.
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Affiliation(s)
- Jie Zheng
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
| | - Muhammad Arif
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
| | - Xinrui He
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
| | - Dongdong Ding
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
| | - Songlin Zhang
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
| | - Xilu Ni
- State Key Laboratory of Seedling Bioengineering, Ningxia Forestry Institute, Yinchuan, China
| | - Changxiao Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
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10
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Ge H, Cai J, Li D, Ding D, Jia L, Wei S, Liu Y. Half-Field Segmented VMAT Spares Organs at Risk from Postoperative Left Breast Cancer Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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11
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Niu R, Li Z, Han X, Qu Z, Ding D, Wang Z, Liu Q, Liu T, Han C, Watanabe K, Taniguchi T, Wu M, Ren Q, Wang X, Hong J, Mao J, Han Z, Liu K, Gan Z, Lu J. Giant ferroelectric polarization in a bilayer graphene heterostructure. Nat Commun 2022; 13:6241. [PMID: 36271005 PMCID: PMC9587233 DOI: 10.1038/s41467-022-34104-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/14/2022] [Indexed: 11/28/2022] Open
Abstract
At the interface of van der Waals heterostructures, the crystal symmetry and the electronic structure can be reconstructed, giving rise to physical properties superior to or absent in parent materials. Here by studying a Bernal bilayer graphene moiré superlattice encapsulated by 30°-twisted boron nitride flakes, we report an unprecedented ferroelectric polarization with the areal charge density up to 1013 cm−2, which is far beyond the capacity of a moiré band. The translated polarization ~5 pC m−1 is among the highest interfacial ferroelectrics engineered by artificially stacking van der Waals crystals. The gate-specific ferroelectricity and co-occurring anomalous screening are further visualized via Landau levels, and remain robust for Fermi surfaces outside moiré bands, confirming their independence on correlated electrons. We also find that the gate-specific resistance hysteresis loops could be turned off by the other gate, providing an additional control knob. Furthermore, the ferroelectric switching can be applied to intrinsic properties such as topological valley current. Overall, the gate-specific ferroelectricity with strongly enhanced charge polarization may encourage more explorations to optimize and enrich this novel class of ferroelectricity, and promote device applications for ferroelectric switching of various quantum phenomena. Interfacial ferroelectricity may emerge in moiré superlattices. Here, the authors find that the polarized charge is much larger than the capacity of the moiré miniband and the associated anomalous screening exists outside the band.
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Affiliation(s)
- Ruirui Niu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Zhuoxian Li
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Xiangyan Han
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Zhuangzhuang Qu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Dongdong Ding
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Zhiyu Wang
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Qianling Liu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Tianyao Liu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Chunrui Han
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Kenji Watanabe
- National Institute for Materials Science, Tsukuba, Japan
| | | | - Menghao Wu
- School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qi Ren
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
| | - Xueyun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
| | - Jinhai Mao
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zheng Han
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Zizhao Gan
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Jianming Lu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China.
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12
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Ding D, Qu Z, Han X, Han C, Zhuang Q, Yu XL, Niu R, Wang Z, Li Z, Gan Z, Wu J, Lu J. Multivalley Superconductivity in Monolayer Transition Metal Dichalcogenides. Nano Lett 2022; 22:7919-7926. [PMID: 36173038 DOI: 10.1021/acs.nanolett.2c02947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In transition metal dichalcogenides (TMDs), Ising superconductivity with an antisymmetric spin texture on the Fermi surface has attracted wide interest due to the exotic pairing and topological properties. However, it is not clear whether the Q valley with a giant spin splitting is involved in the superconductivity of heavily doped semiconducting 2H-TMDs. Here by taking advantage of a high-quality monolayer WS2 on hexagonal boron nitride flakes, we report an ionic-gating induced superconducting dome with a record high critical temperature of ∼6 K, accompanied by an emergent nonlinear Hall effect. The nonlinearity indicates the development of an additional high-mobility channel, which (corroborated by first principle calculations) can be ascribed to the population of Q valleys. Thus, multivalley population at K and Q is suggested to be a prerequisite for developing superconductivity. The involvement of Q valleys also provides insights to the spin textured Fermi surface of Ising superconductivity in the large family of transition metal dichalcogenides.
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Affiliation(s)
- Dongdong Ding
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhuangzhuang Qu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Xiangyan Han
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Chunrui Han
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Quan Zhuang
- Shenzhen Institute for Quantum Science and Engineering (SIQSE), Southern University of Science and Technology, Shenzhen 518055, China
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, China
| | - Xiang-Long Yu
- Shenzhen Institute for Quantum Science and Engineering (SIQSE), Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy, Shenzhen 518048, China
| | - Ruirui Niu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhiyu Wang
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhuoxian Li
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zizhao Gan
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Jiansheng Wu
- Shenzhen Institute for Quantum Science and Engineering (SIQSE), Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy, Shenzhen 518048, China
| | - Jianming Lu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
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13
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Dahl J, Rasmussen LD, Ding D, Westra J, Wijns W, Tu S, Christiansen E, Eftekhari A, Li G, Winther S, Bottcher M. Diagnostic performance of on-site computation of quantitative flow ratio by a coronary computed tomography angiography based algorithm: comparison of distal and lesion-specific measurements. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1127] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Guidelines recommend secondary ischemia assessment following a coronary computed tomography angiography (CTA) with suspected obstructive coronary artery disease (CAD). Coronary CTA-derived quantitative flow ratio (CT-QFR) is an on-site technique performed on acquired CTA images that estimates the functional severity of a coronary stenosis. However, CT-QFR measurements are available throughout the coronary vessel with no clear recommendations as to which specific values should be used for identifying obstructive CAD, e.g. most distal or lesion-specific values.
Purpose
First, to investigate the feasibility of CT-QFR and the correlation and agreement with invasive fractional flow reserve (FFR). Secondly, to compare the diagnostic performance of distal versus lesion-specific CT-QFR for identifying obstructive CAD defined by invasive coronary angiography (ICA) with FFR.
Methods
A total of 1732 prospectively included patients with symptoms suggestive of CAD referred for CTA were included. All patients with ≥50% diameter stenosis (DS) on CTA were subsequently referred for ICA with conditional FFR in lesions with 30–89%DS. Obstructive CAD was defined by ICA as FFR ≤0.80 or high-grade stenosis by visual assessment (≥90%DS). A blinded analysis of CT-QFR was performed in patients referred to ICA with measurements at the distal end of a vessel (distal CT-QFR) and 1 cm distal to stenotic lesions on CTA (lesion-specific). CT-QFR ≤0.80 was defined as abnormal. For correlation analyses to invasive FFR, CT-QFR was assessed corresponding to the position of the invasive pressure sensor.
Results
In total, 445/1732 (25%) patients had suspected obstructive CAD at CTA and underwent subsequent ICA. CT-QFR analysis was feasible in 423/445 (95%) patients. CT-QFR correlated (Pearson's rho 0.54, p<0.001) and agreed (mean difference –0.02±0.09) to FFR with CT-QFR overestimating FFR (Fig. 1). Obstructive CAD was identified in 190/423 (44%) patients by ICA. Distal and lesion-specific CT-QFR classified 196 (46%) and 171 (40%) patients as abnormal, respectively. Areas under the receiver-operating characteristic curves for distal versus lesion-specific CT-QFR were similar (0.86 (95% CI: 0.82–0.89) vs. 0.86 (0.82–0.90), p=0.80). Sensitivities for distal and lesion-specific CT-QFR were 78% (95% CI: 71–84) vs. 74% (67–80), p=0.01, respectively, and specificities 79% (95% CI: 74–84) vs. 87% (82–91), p<0.01, respectively. Distal and lesion-specific CT-QFR had similar diagnostic accuracy (79 (95% CI: 75–83), vs. 81 (77–85), p=0.07) (Fig. 2).
Conclusion
In patients with suspected obstructive CAD on CTA, non-invasive estimation of FFR using CT-QFR is feasible with moderate correlation and good agreement with invasive FFR. Overall diagnostic performance of distal and lesion-specific values for discriminating obstructive CAD by invasive FFR are similar. The use of CT-QFR could therefore potentially reduce the need for referral to invasive angiography after CTA.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Aarhus UniversityRegion Mid Jutland
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Affiliation(s)
- J Dahl
- Goedstrup Hospital , Herning , Denmark
| | | | - D Ding
- National University of Ireland, The Lambe Institute for translational Medicine and Curam , Galway , Ireland
| | - J Westra
- Aarhus University Hospital, Department of Cardiology , Aarhus , Denmark
| | - W Wijns
- National University of Ireland, The Lambe Institute for translational Medicine and Curam , Galway , Ireland
| | - S Tu
- Shanghai Jiao Tong University, Biomedical Instrument Institute, School of Biomedical Engineering , Shanghai , China
| | - E Christiansen
- Aarhus University Hospital, Department of Cardiology , Aarhus , Denmark
| | - A Eftekhari
- Aalborg University Hospital, Department of Cardiology , Aalborg , Denmark
| | - G Li
- Shanghai Jiao Tong University, Biomedical Instrument Institute, School of Biomedical Engineering , Shanghai , China
| | - S Winther
- Goedstrup Hospital , Herning , Denmark
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14
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Dahl J, Ramussen LD, Ding D, Westra J, Wijns W, Tu S, Christiansen E, Eftekhari A, Gormsen LC, Ejlersen JA, Winther S, Bottcher M. Comparison of second-line on-site computed quantitative flow ratio from coronary computed tomography angiography to PET perfusion imaging for detecting obstructive coronary artery disease. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1190] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
In patients with suspected obstructive coronary artery disease (CAD) on coronary computed tomography (CTA), guidelines endorse second-line selective testing for hemodynamic evaluation of suspected CAD. A variety of non-invasive modalities are available, and myocardial perfusion imaging with Rubidium-82 positron emission tomography (PET) is an established method with high diagnostic performance. Recently, an on-site method estimating computed tomography-derived quantitative flow ratio (CT-QFR) showed promising results for discriminating obstructive CAD. However, no study has compared the diagnostic performances of PET and CT-QFR.
Purpose
To assess a possible non-inferiority of CT-QFR compared to PET in patients with suspected obstructive CAD at CTA using invasive coronary angiography (ICA) with fractional flow reserve (FFR) as reference.
Methods
Patients (n=1732, 57% males, age 59±9.5) referred on a clinical indication with symptoms suggestive of obstructive CAD underwent routine CTA. Patients with ≥50% diameter stenosis (DS) on CTA were referred for PET and subsequent ICA with FFR. CT-QFR was analyzed post-hoc blinded to PET and ICA results.
Abnormal CT-QFR was defined as CT-QFR ≤0.80 in any vessel with a diameter ≥1.5mm. An independent core-lab evaluated PET scans as abnormal/normal with optional analyst-dependent application of pre-specified criteria; summed stress score of ≥4 in ≥2 contiguous segments, vessel-specific myocardial blood flow (MBF) <2.00 ml/g/min, global myocardial blood flow reserve ≤1.8, and/or transient ischemic dilatation ratio >1.13. Obstructive CAD was defined as ICA with FFR ≤0.80 or high-grade stenosis (≥90% DS).
Results
In total, 445/1732 patients (25%) had suspected obstructive CAD on CTA of whom 400/445 patients (90%) underwent subsequent PET and ICA. CT-QFR was successfully analysed in 383/400 (96%) patients classifying 174/383 (45%) patients as having disease. In comparison, PET classified 130/383 (34%) patients as having disease. In total, obstructive CAD by ICA with FFR was identified in 162 (42%) patients.
There was no significant difference in area under the receiver-operating characteristic curves for CT-QFR compared to the best performing PET metric (lowest vessel-specific MBF); 0.84 (95% CI 0.80–0.89) vs. 0.81 (0.77–0.85), p=0.19)) (Fig. 1). Overall diagnostic accuracy of CT-QFR versus PET was similar (78% (95% CI 74–82) vs. 77% (72–81), p=0.70. Sensitivities for CT-QFR and PET were 78% (71–84) and 63% (55–70), p<0.01, respectively, and specificities 78% (72–84) and 87% (82–91), p=0.01, respectively (Fig. 2). Three-vessel or left main disease on ICA was correctly identified in 30/31 patients by both CT-QFR and PET.
Conclusion
In patients with suspected obstructive CAD by CTA, second-line CT-QFR was non-inferior to PET for discriminating obstructive CAD by invasive FFR; Although diagnostic accuracy was similar, CT-QFR demonstrated higher sensitivity while PET showed higher specificity
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Aarhus University PhD fellowshipRegion Mid Health Research Foundation
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Affiliation(s)
- J Dahl
- Goedstrup Hospital , Herning , Denmark
| | | | - D Ding
- National University of Ireland, The Lambe Institute for translational Medicine and Curam , Galway , Ireland
| | - J Westra
- Aarhus University Hospital, Department of Cardiology , Aarhus , Denmark
| | - W Wijns
- National University of Ireland, The Lambe Institute for translational Medicine and Curam , Galway , Ireland
| | - S Tu
- Shanghai Jiao Tong University, Biomedical Instrument Institute, School of Biomedical Engineering , Shanghai , China
| | - E Christiansen
- Aarhus University Hospital, Department of Cardiology , Aarhus , Denmark
| | - A Eftekhari
- Aalborg University Hospital, Department of Cardiology , Aalborg , Denmark
| | - L C Gormsen
- Aarhus University Hospital, Department of Nuclear Medicine and PET , Aarhus , Denmark
| | - J A Ejlersen
- Viborg Hospital, Department of Clinical Physiology , Viborg , Denmark
| | - S Winther
- Goedstrup Hospital , Herning , Denmark
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15
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Kotoku N, Ding D, Ninomiya K, Masuda S, Kageyama S, Piazza N, Wijns W, Tu S, Onuma Y, Serruys PW. Murray law-based quantitative flow ratio for assessment of left main bifurcation derived from a single fluoroscopic angiographic view as compared to FFRCT. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1210] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
In patients with complex CAD, the presence of left main (LM) disease is an important prognostic factor in assessing the risk balance between PCI and CABG. Functional assessment has become standard of care to evaluate the significance of coronary stenosis and to justify the performance of PCI in the contemporary practice. FFRCT is a well-established method based on 3D reconstruction of coronary artery derived from CCTA. The Murray law-based quantitative flow reserve (μQFR) is a novel computational method of invasive angiography relying on a single angiographic view that takes into account side branches diameters to compute fractal flow division. The aim of the current analysis is to evaluate in patients with complex CAD the feasibility of μQFR in LM bifurcation and its diagnostic concordance with FFRCT. The impact of the optimal viewing angle defined by CCTA on the physiological assessment of the LM bifurcation using a single angiographic view was also evaluated.
Methods
In 299 consecutive patients with 3-vessel disease with or without LM coronary artery disease, up to 3 analyzable fluoroscopic projections per patient were analysed with μQFR retrospectively. FFRCT and μQFR were measured at 3 fiducial landmark points: i) point of LM bifurcation (POB); ii) proximal LAD 10 mm distal to POB; ii) proximal LCX 10 mm distal to POB. CCTA-based “optimal viewing angle” of LM bifurcation are computed by creating a 3-point closed spline involving the LM, LAD, and LCX at 5mm from the POB and subsequently by reconstructing the “en face” fluoroscopic viewing angle of the spline. The en face viewing angle provides an optimal assessment of the bifurcation geometry [1]. In terms of Rx gantry angulation, the closest angiographic projection to the optimal viewing angle derived from CCTA was defined as the “best fluoroscopic projection” for each patient.
Results
In 299 patients, 793 projections were analysed with μQFR and compared to FFRCT. Single view μQFR was analyzable in 100%. Correlation and agreement between μQFR and FFRCT for 793 projections in 299 patients are shown in Figure 1A, 2A. The Spearman's correlation coefficient showed moderate correlations at POB (r=0.481, p<0.001) and LCX (r=0.584, p<0.001), and strong correlation at LAD (r=0.642, p<0.001). Correlation and agreement between μQFR and FFRCT for best projections from each patient are shown in Figure 1B, 2B. Correlations were improved in the best projections with the following Spearman's correlation coefficient: at POB (r=0.522, p<0.001), LCX (r=0.622, p<0.001), and LAD (r=0.695, p<0.001).
Conclusion
Computation of μQFR from a single angiographic view has a high feasibility. Tailored optimal fluoroscopic view is essential for the physiological assessment of the LM bifurcation using a single angiographic view. Evaluation of diagnostic accuracy of μQFR warrants further analysis of the LMCAD after prospective planning of the optimal fluoroscopic view based on the selection of the best CCTA 3D view.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- N Kotoku
- National University of Ireland , Galway , Ireland
| | - D Ding
- National University of Ireland , Galway , Ireland
| | - K Ninomiya
- National University of Ireland , Galway , Ireland
| | - S Masuda
- National University of Ireland , Galway , Ireland
| | - S Kageyama
- National University of Ireland , Galway , Ireland
| | - N Piazza
- McGill University Health Centre , Montreal , Canada
| | - W Wijns
- National University of Ireland , Galway , Ireland
| | - S Tu
- Shanghai Jiao Tong University , Shanghai , China
| | - Y Onuma
- National University of Ireland , Galway , Ireland
| | - P W Serruys
- National University of Ireland , Galway , Ireland
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16
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Xu F, Zhang J, Ding D, Liu W, Zheng C, Zhou S, Chen Y, Kuang C. Real-time reconstruction using electro-optics modulator-based structured illumination microscopy. Opt Express 2022; 30:13238-13251. [PMID: 35472941 DOI: 10.1364/oe.454982] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Structured illumination microscopy (SIM), a super-resolution technology, has a wide range of applications in life sciences. In this study, we present an electro-optic high-speed phase-shift super-resolution microscopy imaging system including 2D SIM, total internal reflection fluorescence-SIM, and 3D SIM modes. This system uses galvanometers and an electro-optic modulator to flexibly and quickly control the phase and direction of structured illumination patterns. Moreover, its design consists of precise timing for improved acquisition speed and software architecture for real-time reconstruction. The highest acquisition rate achieved was 151 frames/s, while the highest real-time super-resolution reconstruction frame rate achieved was over 25 frames/s.
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Hu X, Arif M, Ding D, Li J, He X, Li C. Invasive Plants and Species Richness Impact Litter Decomposition in Riparian Zones. Front Plant Sci 2022; 13:955656. [PMID: 35873999 PMCID: PMC9301390 DOI: 10.3389/fpls.2022.955656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 06/14/2022] [Indexed: 05/03/2023]
Abstract
Natural ecosystems generally include litter decomposition as part of the natural cycle since the material properties and the environment greatly influence the decomposition rate. The invasion of exotic plants alters the species diversity and growth characteristics of plant communities, but its impact on litter decomposition is unknown in the riparian zone. This study examines how invasive plants affect the early stages of litter decomposition and how species richness impacts them. This experiment involved a random litter mixture of exotic (Alternanthera philoxeroides and Bidens pilosa) and native species in the riparian zone of the Three Gorges Dam Reservoir in China. There were 43 species mixture types, with various species richness ranging from 1 to 6. Litterbags were placed in the hydro-fluctuation zone and terrestrial zone, where they decomposed over the course of 55 days. Invasive plants decompose rapidly compared to native plants (35.71% of the remaining mass of the invasive plant). The invasive plant A. philoxeroides has the potential to accelerate native plant decomposition (0.29 of non-added synergetic effect), but Bidens pilosa cannot. Nonetheless, species richness had little effect on the decomposition rate. These effects are dependent upon differences in chemical functional characteristics among the species. The initial traits of the plants, specifically C, N, and C/N, were significantly and linearly correlated with the loss of mixed litter mass and mixing effect strength (P < 0.01). In addition, submergence decomposition conditions reduce the disturbance of invasive plants and predict decomposition rates based on litter characteristics. Invasive plants can therefore impact the material cycle of an ecosystem. There is a need to examine decomposition time, which may also involve considering other factors.
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Affiliation(s)
- Xin Hu
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Muhammad Arif
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
| | - Dongdong Ding
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Jiajia Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Xinrui He
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Changxiao Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- *Correspondence: Changxiao Li
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18
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Wang J, Xu X, Cheng T, Gu L, Qiao R, Liang Z, Ding D, Hong H, Zheng P, Zhang Z, Zhang Z, Zhang S, Cui G, Chang C, Huang C, Qi J, Liang J, Liu C, Zuo Y, Xue G, Fang X, Tian J, Wu M, Guo Y, Yao Z, Jiao Q, Liu L, Gao P, Li Q, Yang R, Zhang G, Tang Z, Yu D, Wang E, Lu J, Zhao Y, Wu S, Ding F, Liu K. Dual-coupling-guided epitaxial growth of wafer-scale single-crystal WS 2 monolayer on vicinal a-plane sapphire. Nat Nanotechnol 2022; 17:33-38. [PMID: 34782776 DOI: 10.1038/s41565-021-01004-0] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
The growth of wafer-scale single-crystal two-dimensional transition metal dichalcogenides (TMDs) on insulating substrates is critically important for a variety of high-end applications1-4. Although the epitaxial growth of wafer-scale graphene and hexagonal boron nitride on metal surfaces has been reported5-8, these techniques are not applicable for growing TMDs on insulating substrates because of substantial differences in growth kinetics. Thus, despite great efforts9-20, the direct growth of wafer-scale single-crystal TMDs on insulating substrates is yet to be realized. Here we report the successful epitaxial growth of two-inch single-crystal WS2 monolayer films on vicinal a-plane sapphire surfaces. In-depth characterizations and theoretical calculations reveal that the epitaxy is driven by a dual-coupling-guided mechanism, where the sapphire plane-WS2 interaction leads to two preferred antiparallel orientations of the WS2 crystal, and sapphire step edge-WS2 interaction breaks the symmetry of the antiparallel orientations. These two interactions result in the unidirectional alignment of nearly all the WS2 islands. The unidirectional alignment and seamless stitching of WS2 islands are illustrated via multiscale characterization techniques; the high quality of WS2 monolayers is further evidenced by a photoluminescent circular helicity of ~55%, comparable to that of exfoliated WS2 flakes. Our findings offer the opportunity to boost the production of wafer-scale single crystals of a broad range of two-dimensional materials on insulators, paving the way to applications in integrated devices.
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Affiliation(s)
- Jinhuan Wang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
| | - Xiaozhi Xu
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Ting Cheng
- Center for Multidimensional Carbon Materials, Institute for Basic Science, Ulsan, Korea
- College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Lehua Gu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, China
| | - Ruixi Qiao
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Zhihua Liang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Dongdong Ding
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Hao Hong
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China
| | - Peiming Zheng
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Zhibin Zhang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Zhihong Zhang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Shuai Zhang
- Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, China
| | - Guoliang Cui
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Chao Chang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Chen Huang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Jiajie Qi
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Jing Liang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Can Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Yonggang Zuo
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Guodong Xue
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Xinjie Fang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Jinpeng Tian
- Nanoscale Physics and Devices Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Muhong Wu
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Yi Guo
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Zhixin Yao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Qingze Jiao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
| | - Lei Liu
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Peng Gao
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Qunyang Li
- Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, China
| | - Rong Yang
- Nanoscale Physics and Devices Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Guangyu Zhang
- Nanoscale Physics and Devices Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Guangdong, China
| | - Zhilie Tang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, China
| | - Dapeng Yu
- Shenzhen Institute for Quantum Science and Engineering, and Department of Physics, Southern University of Science and Technology, Shenzhen, China
| | - Enge Wang
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Guangdong, China
- School of Physics, Liaoning University, Shenyang, China
| | - Jianming Lu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Yun Zhao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China.
| | - Shiwei Wu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, China.
| | - Feng Ding
- Center for Multidimensional Carbon Materials, Institute for Basic Science, Ulsan, Korea.
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea.
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China.
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China.
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Guangdong, China.
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Ding D, Arif M, Liu M, Li J, Hu X, Geng Q, Yin F, Li C. Plant-soil interactions and C:N:P stoichiometric homeostasis of plant organs in riparian plantation. Front Plant Sci 2022; 13:979023. [PMID: 35979078 PMCID: PMC9376457 DOI: 10.3389/fpls.2022.979023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/11/2022] [Indexed: 05/06/2023]
Abstract
Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric ratios give valuable insight into ecosystem function. The purpose of the present study is to probe into the C, N, and P stoichiometric characteristics in various organs and their relationships with soil factors of the dominant deciduous conifer plant species (Taxodium ascendens and Taxodium distichum) during afforestation in the riparian zone of Three Gorges Reservoir. The results showed only a small change in the concentration of C in different plant organs and soils. T. ascendens contained mean N and P concentrations of 7.63 and 1.54 g/kg in fine roots, 5.10 and 0.56 g/kg in stems, and 15.48 and 2.30 g/kg in leaves, respectively. Whereas T. distichum had a mean N and P concentration of 7.08 and 1.37 g/kg in fine roots, 4.84 and 0.59 g/kg in stems, and 16.89 and 2.23 g/kg in leaves. The N:P ratios in all organs were below 14, indicating that N may have inhibited tree growth. The fine roots P and N:P of T. distichum were weak plasticity and weak homeostasis, and those of T. ascendens were plasticity and weak plasticity. Their stems and leaves adhere to strict homeostasis. N concentrations were significantly positively related to P concentrations in every tissue (except the stems of T. ascendens), and C concentrations were significantly positively associated with P concentrations in the stems and leaves of T. ascendens and T. distichum (p < 0.05). Likewise, soil P and fine root P were positively associated (p < 0.01). This study contributes to the understanding of deciduous conifer plant stoichiometry. It demonstrates N, P, and N:P stoichiometric homeostasis in T. ascendens and T. distichum, which can withstand flooding and are suitable for vegetation restoration in the hydro-fluctuation zone.
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Affiliation(s)
- Dongdong Ding
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Muhammad Arif
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
| | - Minghui Liu
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Jiajia Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Xin Hu
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Qianwen Geng
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Fan Yin
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Changxiao Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
- *Correspondence: Changxiao Li,
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20
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Zheng J, Arif M, Zhang S, Yuan Z, Zhang L, Li J, Ding D, Li C. Dam inundation simplifies the plant community composition. Sci Total Environ 2021; 801:149827. [PMID: 34467924 DOI: 10.1016/j.scitotenv.2021.149827] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 06/28/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 05/20/2023]
Abstract
The construction of dams has caused riparian habitat degradation and ecosystem service loss globally. It is critical to assess the response of riparian plant communities to inundation gradients for their conservation. Recent evidence suggests that plant community assemblages are governed by flooding stress, soil nutrient availability, climate (environmental filtering) and dispersal, speciation, local extinction (dispersal filtering), but it remains unclear which dominates the riparian ecosystem regulated by a dam. Thus, this article aims to elucidate the relative importance of environmental and dispersal filtering to variations in plant communities to understand community assembly mechanisms in riparian ecosystems. Here we used plant community data related to four elevations in the riparian zone of the Three Gorges Dam Reservoir in China to show that species richness and diversity, community height, and the cover of total, annual, and exotic plant categories decreased, while the cover of perennial and native plant groups increased under higher flooding stress. Community composition varied substantially with elevation, and species composition tended to converge with increased inundation, characterized by flood-tolerant species. The community composition underwent stronger environmental filtering at low elevations and stronger dispersal filtering at high elevations, with stronger environmental filtering across riparian ecosystems. Therefore, we conclude that dam inundation drives community assemblages of riparian plants by the combined effects of environmental and dispersal filtering. Still, their relative contribution varies between elevations, and environmental filtering is more important in shaping community assembly. This study is the first to confirm that plant community assembly in the dam-regulated riparian area is determined by both niche-based and stochastic processes. Thus, we highlighted the importance of considering inundation intensity, propagule sources, and river connectivity when implementing restoration projects.
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Affiliation(s)
- Jie Zheng
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Muhammad Arif
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Songlin Zhang
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Zhongxun Yuan
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Limiao Zhang
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Jiajia Li
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Dongdong Ding
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
| | - Changxiao Li
- Key Laboratory of Eco-environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region, College of Life Sciences, Southwest University, Chongqing 400715, China.
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21
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Reddy A, Hill C, Sehgal S, Ding D, Zheng L, He J, Herman J, Meyer J, Narang A. KRAS and NOTCH1/2 Mutations are Associated With Pathologic and Clinical Outcomes in Localized Pancreatic Cancer Treated With Neoadjuvant Chemotherapy and Stereotactic Body Radiotherapy Followed by Surgical Exploration. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Qin M, Han X, Ding D, Niu R, Qu Z, Wang Z, Liao ZM, Gan Z, Huang Y, Han C, Lu J, Ye J. Light Controllable Electronic Phase Transition in Ionic Liquid Gated Monolayer Transition Metal Dichalcogenides. Nano Lett 2021; 21:6800-6806. [PMID: 34369798 DOI: 10.1021/acs.nanolett.1c01467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ionic liquid gating has proved to be effective in inducing emergent quantum phenomena such as superconductivity, ferromagnetism, and topological states. The electrostatic doping at two-dimensional interfaces relies on ionic motion, which thus is operated at sufficiently high temperature. Here, we report the in situ tuning of quantum phases by shining light on an ionic liquid-gated interface at cryogenic temperatures. The light illumination enables flexible switching of the quantum transition in monolayer WS2 from an insulator to a superconductor. In contrast to the prevailing picture of photoinduced carriers, we find that in the presence of a strong interfacial electric field conducting electrons could escape from the surface confinement by absorbing photons, mimicking the field emission. Such an optical tuning tool in conjunction with ionic liquid gating greatly facilitates continuous modulation of carrier densities and hence electronic phases, which would help to unveil novel quantum phenomena and device functionality in various materials.
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Affiliation(s)
- Maosen Qin
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Xiangyan Han
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Dongdong Ding
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Ruirui Niu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhuangzhuang Qu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhiyu Wang
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Zhi-Min Liao
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- Yangtze Delta Institute of Optoelectronics, Peking University, Nantong, Jiangsu 226010 China
| | - Zizhao Gan
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Yuan Huang
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China
| | - Chunrui Han
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Jianming Lu
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Jianting Ye
- Device Physics of Complex Materials, Zernike Institute for Advanced Materials, University of Groningen, Groningen 9746AG, The Netherlands
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23
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Liu S, Li Y, Zhang J, Zhang H, Wang Y, Chuah C, Tang Y, Lam J, Kwok R, Ou H, Ding D, Tang B. A two-in-one Janus NIR-II AIEgen with balanced absorption and emission for image-guided precision surgery. Mater Today Bio 2021; 10:100087. [PMID: 33889836 PMCID: PMC8050777 DOI: 10.1016/j.mtbio.2020.100087] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 10/03/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
Fluorescence imaging in the near-infrared II (NIR-II, 1000-1700 nm) region opens up new avenues for biological systems due to suppressed scattering and low autofluorescence at longer-wavelength photons. Nonetheless, the development of organic NIR-II fluorophores is still limited mainly due to the shortage of efficient molecular design strategy. Herein, we propose an approach of designing Janus NIR-II fluorophores by introducing electronic donors with distinct properties into one molecule. As a proof-of-concept, fluorescent dye 2 TT-m, oC6B with both twisted and planar electronic donors displayed balanced absorption and emission which were absent in its parent compound. The key design strategy for Janus molecule is that it combines the merits of intense absorption from planar architecture and high fluorescence quantum yield from twisted motif. The resulting 2 TT-m, oC6B nanoparticles exhibit a high molar absorptivity of 1.12 ⨯104 M-1 cm-1 at 808 nm and a NIR-II quantum yield of 3.7%, displaying a typical aggregation-induced emission (AIE) attribute. The highly bright and stable 2 TT-m, oC6B nanoparticles assured NIR-II image-guided cancer surgery to resect submillimeter tumor nodules. The present study may inspire further development of molecular design philosophy for highly bright NIR-II fluorophores for biomedical applications.
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Affiliation(s)
- S. Liu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Y. Li
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - J. Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - H. Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Y. Wang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - C. Chuah
- Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, South Australia, 5042, Australia
| | - Y. Tang
- Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, South Australia, 5042, Australia
| | - J.W.Y. Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - R.T.K. Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - H. Ou
- Key Laboratory of Bioactive Materials Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - D. Ding
- Key Laboratory of Bioactive Materials Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - B.Z. Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Center for Aggregation-Induced Emission SCUT-HKUST Joint Research Institute State Key Laboratory of Luminescent Materials and Devices South China University of Technology, Guangzhou, 510640, China
- AIE Institute, Guangzhou Development District, Huangpu, Guangzhou, 510530, China
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24
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Yusuf M, Gaskins J, Burton E, May M, Williams B, Ding D, Miller D, Woo S. Dose-Size Response Relationship For Melanoma Brain Metastases Treated With Stereotactic Radiosurgery In The Era Of Immunotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Yang WF, Qin N, Song X, Jiang C, Li T, Ji P, Li Y, Ding D, Wang C, Dai J, Jin G, Chen TW, Chang YS, Ouyang DQ, Liao GQ, Hu Z, Chang KP, Su YX, Ma H. Genomic Signature of Mismatch Repair Deficiency in Areca Nut-Related Oral Cancer. J Dent Res 2020; 99:1252-1261. [PMID: 32527169 DOI: 10.1177/0022034520930641] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Areca nut (AN) chewing contributes to an increase of oral squamous cell carcinoma (OSCC) cases in South and Southeast Asia; however, genomic events underlying the carcinogenesis process of AN-related OSCC remain unclear. Here, we comprehensively describe the genomic and transcriptome alterations of 113 Chinese OSCC patients (89 AN related and 24 AN negative) by whole-exome sequencing and RNA sequencing, and we compared the genomic differences between AN-related and AN-negative samples by integrating sequencing data of 325 OSCC patients from The Cancer Genome Atlas database and 50 from a published Taiwanese study. We identified 11 significantly mutated genes for OSCC, including 4 novel ones (ATG2A, WEE1, DST, and TSC2), of which WEE1 and ATG2A mutated with significantly higher rates in AN-related samples (P = 0.04 and P = 0.003, respectively). Mutational signature analysis revealed that AN-related OSCCs were specially characterized by the genomic signature of mismatch repair deficiency (dMMR), which could also predict the prognosis status of AN-related OSCC. In addition, an elevated PD-L1 expression was also observed in both AN-related patients (P = 3.71 × 10-11) and those with a high dMMR level (P = 1.99 × 10-4). Further differential expression analysis and in vitro experiments confirmed the role of dMMR in the development of OSCC induced by AN exposure. Taken together, this study first revealed the molecular profiles and highlighted the role of dMMR in AN-related OSCC among the Chinese population and identified that AN-related OSCC may represent a potential cohort for effective anti-PD-1/L1 immunotherapy.
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Affiliation(s)
- W F Yang
- Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - N Qin
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - X Song
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - C Jiang
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital, Central South University, Changsha, Mainland China
| | - T Li
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital, Central South University, Changsha, Mainland China
| | - P Ji
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - Y Li
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - D Ding
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - C Wang
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China.,Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Mainland China
| | - J Dai
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - G Jin
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - T W Chen
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Y S Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - D Q Ouyang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Mainland China
| | - G Q Liao
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Mainland China
| | - Z Hu
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
| | - K P Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Y X Su
- Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - H Ma
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Mainland China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, Mainland China
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26
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Zhang L, Ding D, Gallagher R. P202 Are Chinese immigrants with CVD ready to use web-based health information: a comparative study in Australia. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.073] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Immigrant populations often have poor access to cardiovascular disease (CVD) secondary prevention due to linguistic and cultural barriers. Web-based interventions are effective in risk reduction and lifestyle modification and may reach those hard-to-reach populations such as Chinese immigrants. However, less is known about the current use of web-based health information and confidence in use.
Purposes
We compared the use of web-based health information and confidence in use between Chinese immigrants with CVD to those with and without another chronic condition; and explored the factors associated with the confidence in utilization.
Methods
Chinese immigrants with CVD, musculoskeletal conditions, or no chronic condition were recruited from Chinese communities across New South Wales, Australia. E-health literacy scale was used to explore the perceptions of web-based health information and confidence in use. Demographic, clinical data and use of web-based health information were collected and health literacy was measured using a validated single screening question.
Results
Participants (n = 90 CVD, n = 87 musculoskeletal, n = 154 no chronic conditions) were aged mean 59 ± 16 years, mostly female (69%), 75% reported fair to poor English proficiency, and 51% had completed university. The most accessed web-based health information concerned lifestyle (60%), health resources (45%), diseases (35%), and medications (30%). More than half (54%) were confident in using web-based health information.
Participants with CVD were the oldest (71 vs 65 vs 49 years, p<.001) and participants with any chronic condition had less education (p<.001) and English proficiency (p<.001) than the healthy group. Approximately half of the participants with CVD perceived web-based health information as useful (48%) and important (46%), and the most accessed information concerned lifestyle and medication (56% and 32%). Participants with CVD accessed medication information more often than musculoskeletal group (32% vs 23%), but there was no difference in accessing other information. Both chronic groups showed no difference in accessing web-based medication and lifestyle information compared with the healthy group. Confidence in using web-based health information was similar for CVD and musculoskeletal groups and lower than the healthy group (p<.001).
Participants with the least confidence to use web-based health information were older (p=.016), female (p=.014), had less than university level education (p<.001), and lower health literacy (p=.001) after adjusting for age, gender, education, English proficiency, employment status, social support, health literacy, and number of chronic conditions.
Conclusions
There is a strong potential to provide web-based medication and lifestyle information for Chinese immigrants with CVD if support is provided to improve confidence in this technology for older, women, and those with less education and/or health literacy.
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Affiliation(s)
- L Zhang
- University of Sydney, Sydney Nursing School, Sydney, Australia
| | - D Ding
- University of Sydney, School of Public Health, Sydney, Australia
| | - R Gallagher
- University of Sydney, Sydney Nursing School, Sydney, Australia
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27
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Qi GW, Zheng J, Ma YY, Feng JY, Chen L, Zhao J, Ding D. [Clinicopathological study of clear cell sarcoma of the kidney]. Zhonghua Bing Li Xue Za Zhi 2019; 48:799-801. [PMID: 31594046 DOI: 10.3760/cma.j.issn.0529-5807.2019.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- G W Qi
- Department of Pathology, Hangzhou Children's Hospital, Zhejiang Province, Hangzhou 310014, China
| | - J Zheng
- Department of Preventive Health Care, Hangzhou Children's Hospital, Zhejiang Province, Hangzhou 310014, China
| | - Y Y Ma
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - J Y Feng
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - L Chen
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - J Zhao
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - D Ding
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
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28
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Feng JY, Chen L, Ma YY, Zhao J, Ding D. [Role of a liver pathology standardized scoring system in the diagnosis of congenital biliary atresia and its relationship with prognosis]. Zhonghua Bing Li Xue Za Zhi 2019; 48:755-761. [PMID: 31594038 DOI: 10.3760/cma.j.issn.0529-5807.2019.10.002] [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 evaluate the diagnostic value of a histologic scoring system in congenital biliary atresia and its prognostic relevance. Methods: From January 2017 to June 2018 at Children's Hospital of Fudan University, 172 wedge liver biopsy specimens were obtained from infants with neonatal cholestasis [119 patients with congenital biliary atresia (CBA) and 53 patients with non-obstructive cholestasis as control]. A pathologist, single-blinded to the final diagnosis, made the histological diagnosis individually based on an 8-feature (portal ductal proliferation, bile duct reaction, bile plugs in portal ductules, liver fibrosis, edema in portal region, cholestasis, inflammatory cells infiltration in portal region, and ductal plate malformation), 21-point scoring system. Results: The main pathologic changes of biliary atresia were hepatocyte cholestasis, hyperplasia of bile ducts, fibrosis and infiltration of inflammatory cells in the portal area. There were significant difference in the degree of portal edema, bile duct hyperplasia and fibrosis between two groups (P<0.01). In addition, there were characteristic bile duct thrombosis in 97.5%(116/119) of the cases and abnormal development of bile duct plate in 9.2%(11/119) of the cases. Compared with non-CBA infant cholestasis group, the difference was statistically significant (P<0.05). The scoring system has high sensitivity, specificity (both 94.1%) and accuracy (94.3%) in the diagnosis of CBA. A score equal to or more than 11 points supported a diagnosis of CBA; whereas a score less than 11 points might suggest cholestasis. The degree of hepatic fibrosis and ductal plate malformation were related to prognosis. Conclusions: The liver pathology scoring system (8-feature, 21-point) is more accurate in diagnosing CBA than previous methods, which may guide the clinicopathological diagnosis. This histological scoring system also helps to assess the prognosis of CBA.
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Affiliation(s)
- J Y Feng
- Department of Pathology, Children's Hospital of Fudan University, Shanghai 201102, China
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29
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Sun C, Ding D, Chen T, Huang Q, Lu S, Yan J. Ecological risk analysis of the solid residues collected from the thermal disposal process of hyperaccumulator Pteris vittata including heavy metals and environmentally persistent free radicals. Environ Sci Pollut Res Int 2019; 26:29234-29245. [PMID: 31396866 DOI: 10.1007/s11356-019-06115-9] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 07/29/2019] [Indexed: 05/28/2023]
Abstract
To conduct a comprehensive ecological analysis on the solid residues derived from the thermal disposal of hyperaccumulator Pteris vittata, this study focused on the behaviors of As and Pb and the characteristics of environmentally persistent free radicals (EPFRs) in the solid residues under different thermal treatment conditions. The analysis results revealed that the concentrations of As in the biochars and bio-slag were approximately 350 and 1100 mg/kg, respectively. Moreover, the concentrations of Pb in the solid residues varied from 34 to 1050 mg/kg. According to the results of the modified BCR sequential extractions, As is more stable in the biochar while Pb is more stable in the combustion slags. In addition, As showed a higher volatilization temperature compared with Pb. The ecological risk assessment indicated that the correlation index between the contamination factor (Cf) of As and the risk index (R2 = 0.995) is considerably larger than the correlation index between the contamination factor of Pb and the risk index (R2 = 0.117), which implies that the pyrolysis method should be selected at priority. Moreover, the EPFR concentrations of the biochar declined by approximately 75 times when the pyrolysis temperature increased from 500 to 600 °C. This behavior indicated that high-temperature pyrolysis (> 600 °C) could simultaneously control both the heavy metal behavior and EPFR concentrations.
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Affiliation(s)
- Chen Sun
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Dongdong Ding
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Tong Chen
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China.
| | - Qunxing Huang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Shengyong Lu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Jianhua Yan
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
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30
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Gong F, Zhao F, Cheng SL, Ding D, Zhang BW, Li XL, Huang YL. Effect of insulin-like growth factor-1 on promoting healing of skin ulcers in diabetic rats. J BIOL REG HOMEOS AG 2019; 33:687-694. [PMID: 31162036] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To investigate the effect of exogenous insulin-like growth factor-1 (IGF-1) on the healing of skin ulcers in diabetic rats, male Sprague Dawleys (SD) rats with back skin ulcers were selected and divided into control group, model group and IGF-1 treatment group which received different doses of IGF-1 (0.5, 1.0, 1.5, and 2.0mg/L). The results showed that the healing speed of the skin ulcers was significantly affected by IGF-1, which reduced the size of wound (P less than 0.05). The expression of MMP-9 was enhanced while the expression of TIMP-1 was decreased in diabetic rats with skin ulcers. The IGF-1 treatment helped to re¬store the normal expression of both MMP-9 and TIMP-1 in diabetic rats with skin ulcers, and diabetic skin ulcers in the 1.5 mg/L IGF-1 group showed the best healing. Histological examination showed that after 20 days, fibroblasts in the IGF-1 experimental group with an appropriate concentration increased and the numbers of fibroblasts and capillaries were significantly higher than those of the other groups. Moreover, there were obvious wound surface contractions and re-epithelialization, and the new epithelium moved to the center of the wound faster. Therefore, it is concluded that an appropriate concentration of IGF-1 can significantly promote the healing of skin ulcers in diabetic rats.
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Affiliation(s)
- F Gong
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - F Zhao
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - S L Cheng
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - D Ding
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - B W Zhang
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - X L Li
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
| | - Y L Huang
- Department of Orthopaedics, People's Hospital of Autonomous Region of Ningxia Medical University, Yinchuan City, Ningxia Autonomous Region, China
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31
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Zhang L, Ding D, Neubeck L, Gallagher R. Readiness of Chinese Immigrants Diagnosed with CVD to use Web-based Health Information. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Wang F, Chen Z, Davagnanam I, Hoskote C, Ding D, Wang W, Yang B, Wang Y, Wang T, Li W, Sander JW, Kwan P. Comparing two classification schemes for seizures and epilepsy in rural China. Eur J Neurol 2018; 26:422-427. [PMID: 30414301 DOI: 10.1111/ene.13857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/05/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE The International League against Epilepsy (ILAE) updated the classifications of seizures and epilepsies in 2017. The 2017 classifications were compared with the 1980s classifications in rural China. METHODS People with epilepsy receiving treatment under the National Epilepsy Control Programme were recruited from rural areas in China. Their seizures and epileptic syndrome were classified using the 1980s ILAE classification system and then re-classified according to the 2017 system. Differences in seizure, epilepsy and aetiology classifications were identified. RESULTS A total of 597 individuals (58% males, aged 6-78 years) were included. Amongst them 535 (90%) had a single seizure type, 57 (9.55%) had two types and five (0.84%) had three. There was complete agreement between the 1981 and 2017 classifications for the 525 individuals with focal seizures. Seizures originally classified as generalized in 10 of 65 individuals were re-classified as unknown in the 2017 classification. Compared to the 1980s classifications, the proportion of individuals with unknown seizures and unknown epilepsy increased from 1.2% (7/597) to 2.8% (17/597, P = 0.002), and unknown aetiology increased from 32% (189/597: 182 cryptogenic and seven unclassified) to 39% (230/597; P < 0.001) in the 2017 classifications. CONCLUSIONS The 1980s and 2017 classifications had 100% agreement in classifying focal seizures and epilepsy in rural China. A small but significant proportion of generalized seizures and epilepsy and aetiologies classified in the old classifications were re-classified to unknown in the new classifications. These results highlight the need for improvement in clinical evaluation of people with epilepsy in resource-poor settings.
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Affiliation(s)
- F Wang
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Z Chen
- Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia.,School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - I Davagnanam
- Academic Department of Neuroradiology, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, London, UK
| | - C Hoskote
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK
| | - D Ding
- Fudan University, Shanghai, China
| | - W Wang
- Beijing Neurosurgical Institute, Beijing, China
| | - B Yang
- Jiaozuo People's Hospital, Henan, China
| | - Y Wang
- Ningxia Medical University, Ningxia, China
| | - T Wang
- Jincheng Emergency Medical Rescue Center, Jincheng, China
| | - W Li
- Affiliated Second Hospital, Hebei Medical University, Hebei, China
| | - J W Sander
- NIHR University College London Hospitals, Biomedical Research Centre, UCL Institute of Neurology, London, UK.,Chalfont Centre for Epilepsy, Chalfont St Peter, UK.,Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, The Netherlands
| | - P Kwan
- Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia.,School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.,Department of Medicine and Therapeutics, Chinese University of Hong Kong, Hong Kong, China.,Department of Neuroscience, Central Clinical School, Monash University, Melbourne, Australia
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Wang J, Corazzini KN, Xu H, Wei S, McConnell ES, Ding D, Wu B. LIVING WITH COGNITIVE IMPAIRMENT IN CHINA: EXPLORING DYADIC EXPERIENCES THROUGH A PERSON-CENTERED CARE LENS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Wang
- Duke University, Durham, North Carolina, United States
| | | | - H Xu
- Duke University School of Nursing, Durham, NC, USA; Duke Global Health Institute, Durham, NC, USA
| | - S Wei
- Duke University School of Nursing, Durham, NC, USA
| | | | - D Ding
- Huashan Hospital Affiliated to Fudan University, Shanghai, China
| | - B Wu
- New York University Rory Meyers College of Nursing, New York, NY, USA
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Yang Y, Liu YH, Cheng Q, Cheng Z, Wu SH, Ding D, Xu SC. [Application of MDCT and post-processing in children with tracheal foreign body]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:1492-1495. [PMID: 29798101 DOI: 10.13201/j.issn.1001-1781.2017.19.007] [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] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Indexed: 11/12/2022]
Abstract
Objective:To explore the clinical value of MDCT and post-processing in children with suspected foreign body in trachea.Method:Two hundred patients with suspected tracheal foreign body were treated with 64-slice spiral CT (MDCT) and simulated endoscopic imaging,then compared with seen in bronchoscopy; Compare the results of MDCT and post-processing with the coincidence of intraoperative findings.Result:One hundred and eighty-four cases of positive children were examined by MDCT postprocessing technique and bronchoscopy,179 cases were obstructed by exogenous foreign body,5 cases were phlegm thrombosis (endogenous foreign body) obstruction; 16 cases of children with no foreign body diagnosed by MDCT post-processing technique were also examined by bronchoscopy. The results showed that there was a foreign body in 1 case,and the foreign body was located in the pharyngeal cleft (watermelon spermoderm),and the remaining 15 cases had no foreign body. MDCT and post-treatment techniques for children with tracheal foreign body diagnosis of 99.4% sensitivity,specificity of 75%.There was no significant difference in the detection rate of foreign body between the two techniques of MDCT and post-processing technique and bronchoscopy (P>0.05). Examed by MDCT and postprocessing,we can understand the specific location and size of foreign body,nature,shape preoperatively.Conclusion:Although MDCT and post-processing techniques can not be used to treat tracheal foreign bodies,but the diagnostic rate of bronchial foreign bodies is comparable to that of bronchoscopy. We could apply MDCT examination and post processing before the bronchoscopy,for foreign body inhalation history is not clear,or suspected airway foreign body. We can improve the level of diagnosis and treatment through guiding the operation of bronchoscopy focus.
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Affiliation(s)
- Y Yang
- Department of Otolaryngology Head and Neck Surgery,the First Affiliated Hospital of Medical University of Anhui,Hefei,230022,China
| | - Y H Liu
- Department of Otolaryngology Head and Neck Surgery,the First Affiliated Hospital of Medical University of Anhui,Hefei,230022,China
| | - Q Cheng
- Department of Otorhinolaryngology,Children's Hospital of Anhui Province
| | - Z Cheng
- Department of Otorhinolaryngology,Children's Hospital of Anhui Province
| | - S H Wu
- Department of Otorhinolaryngology,Children's Hospital of Anhui Province
| | - D Ding
- Department of Otorhinolaryngology,Children's Hospital of Anhui Province
| | - S C Xu
- Department of Otorhinolaryngology,Children's Hospital of Anhui Province
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35
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Ding D, Zhao F, Huang YL, Li XL, Gong F, Yao ZC, Zhang BW, Yang ZY, Ma JM, Shen J, Wen P. [Effects of sural nerve nutrition vess els-supported flap for reconstruction of distal lower leg and ankle soft tissue defects]. Zhonghua Yi Xue Za Zhi 2018; 98:842-845. [PMID: 29609267 DOI: 10.3760/cma.j.issn.0376-2491.2018.11.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the effects of sural nerve nutrition vessels-supported flap for reconstruction of distal lower leg and ankle soft tissue defects. Methods: From June 2014 to June 2017, 37 patients with calf distal and ankle soft tissue defect were repaired with sural nerve nutrition vessels-supported flap, of them 12 cases with calf distal soft tissue defect wounds and 25 cases with ankle soft tissue defect wounds.The scope of flaps was 9 cm×4 cm to 18 cm×9 cm, anti-infection, anti-freezing and dressing treatments were carried out after operation.The results of two-point discrimination among reexamination were recorded. Results: All the flaps survived without ulcer and effusion, only 1 flap for reconstruction of medial malleolus swelled and deactivated at the beginning while it recovered with proper dressings.During the follow-up periods, all the flaps kept favorable feelings, aspects and functions, and the two-point discrimination was 5 to 15 mm [averaged (11.2±1.7) mm]. Conclusion: Sural nerve nutrition vessels-supported flap brings significant effects with excellent safety and reliability in repairing calf and ankle soft tissue defects.
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Affiliation(s)
- D Ding
- Department of Hand and Foot Microsurgery for Reconstruction, the First Affiliated Hospital of Northwest University for Nationalities (the Affiliated Ningxia Peoples Hospital of Ningxia Medical University), Yinchuan 750003, China
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Zhou X, Wang C, Ding D, Chen Z, Peng Y, Peng H, Hou X, Wang P, Hou X, Ye W, Li T, Yang H, Qiu R, Xia K, Sequeiros J, Tang B, Jiang H. Analysis of (CAG) n expansion in ATXN1, ATXN2 and ATXN3 in Chinese patients with multiple system atrophy. Sci Rep 2018; 8:3889. [PMID: 29497168 PMCID: PMC5832826 DOI: 10.1038/s41598-018-22290-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 02/20/2018] [Indexed: 01/09/2023] Open
Abstract
Multiple system atrophy (MSA) is a complex and multifactorial neurodegenerative disease, and its pathogenesis remains uncertain. Patients with MSA or spinocerebellar ataxia (SCA) show overlapping clinical phenotypes. Previous studies have reported that intermediate or long CAG expansions in SCA genes have been associated with other neurodegenerative disease. In this study, we screened for the number of CAG repeats in ATXN1, 2 and 3 in 200 patients with MSA and 314 healthy controls to evaluate possible associations between (CAG)n in these three polyQ-related genes and MSA. Our findings indicated that longer repeat lengths in ATXN2 were associated with increased risk for MSA in Chinese individuals. No relationship was observed between CAG repeat length in the three examined genes and age at onset (AO) of MSA.
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Affiliation(s)
- X Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - C Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - D Ding
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - Z Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - Y Peng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - H Peng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - X Hou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - P Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - X Hou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - W Ye
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - T Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - H Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - R Qiu
- School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - K Xia
- Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China
| | - J Sequeiros
- IBMC - Institute for Molecular and Cell Biology, i3S - Instituto de Investigação e Inovação na Saúde; and ICBAS; Univ. Porto, Porto, Portugal
| | - B Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, P. R. China.,National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, 410078, China
| | - H Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China. .,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China. .,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, P. R. China.
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Liu N, Ding D, Wang L, Zhao H, Zhu L, Geng X. Two novel Mg(II)-based and Zn(II)-based complexes: inhibiting growth of human liver cancer cells. ACTA ACUST UNITED AC 2017; 51:e6929. [PMID: 29267507 PMCID: PMC5734187 DOI: 10.1590/1414-431x20176929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/20/2017] [Indexed: 12/16/2022]
Abstract
Two new Mg(II)-based and Zn(II)-based coordination polymers, {[Mg3(BTB)(DMA)4](DMA)2}n (1, H3BTB=1,3,5-benzenetrisbenzoic acid, DMA=N,N-dimethylacetamide) and {(H2NMe2)2[Zn3(BTB)2(OH)(Im)](DMF)9(MeOH)7}n (2, Im=imidazole, DMF=N,N-dimethylformamide), have been successfully synthesized and structurally characterized under solvothermal conditions. 1 contains a linear [Mg3(COO)6] cluster that connected by the fully deprotonated BTB3- ligands to give a kgd-type 2D bilayer structure; 2 represents a microporous 3D pillar-layered system based on the binuclear Zn units and pillared Im ligands, which shows a (3,5)-connected hms topological net. In addition, in vitro anticancer activities of compounds 1 and 2 on 4 human liver cancer cells (HB611, HHCC, BEL-7405 and SMMC-7721) were determined.
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Affiliation(s)
- N Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - D Ding
- Department of Physiology, Anhui Medical College, Hefei, Anhui, China
| | - L Wang
- Department of Physiology, Basic Medical College of Anhui Medical University, Hefei, Anhui, China
| | - H Zhao
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - L Zhu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - X Geng
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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Ding D, Huang H, Jiang W, Yu W, Zhu H, Liu J, Saiyin H, Wu J, Huang H, Jiang S, Yu L. Reticulocalbin-2 enhances hepatocellular carcinoma proliferation via modulating the EGFR-ERK pathway. Oncogene 2017; 36:6747-6748. [PMID: 29188822 DOI: 10.1038/onc.2017.366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This corrects the article DOI: 10.1038/onc.2017.230.
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Seigel GM, Manohar S, Bai YY, Ding D, Salvi R. An immortalized microglial cell line (Mocha) derived from rat cochlea. Mol Cell Neurosci 2017; 85:202-210. [PMID: 29109020 DOI: 10.1016/j.mcn.2017.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/19/2017] [Accepted: 11/02/2017] [Indexed: 01/18/2023] Open
Abstract
Microglia are glial-immune cells that are essential for the function and survival of the central nervous system. Microglia not only protect neural tissues from immunological insults, but also play a critical role in neural development and repair. However, little is known about the biology of microglia in the cochlea, the auditory portion of the inner ear. In this study, we detected TMEM119+, CD11b+, CD45+ and Iba1+ populations of cells in the rat cochlea, particularly in Rosenthal's canal, inner sulcus and stria vascularis. Next, we isolated and enriched the population of CD11b+ cells from the cochlea and immortalized these cells with the 12S E1A gene of adenovirus in a replication-incompetent retroviral vector to derive a novel microglial cell line, designated Mocha (microglia of the cochlea). The resulting Mocha cells express a number of markers consistent with microglia and respond to lipopolysaccharide (LPS) stimulation by upregulation of genes (Cox2, ICAM-1, Il6r, Ccl2, Il13Ra and Il15Ra) as well as releasing cytokines (IL-1beta, IL-12, IL-13 and RANTES). As evidence of microglial function, Mocha cells phagocytose fluorescent beads at 37°C, but not at 4°C. The expression pattern of microglial markers in Mocha cells suggests that immortalization leads to a more primitive phenotype, a common phenomenon in immortalized cell lines. In summary, Mocha cells display key characteristics of microglia and are now available as a useful model system for the study of cochlear microglial behavior, both in vitro and in vivo.
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Affiliation(s)
- G M Seigel
- University at Buffalo, Center For Hearing & Deafness, 3435 Main Street, Cary 137, Buffalo, NY 14214, United States.
| | - S Manohar
- University at Buffalo, Center For Hearing & Deafness, 3435 Main Street, Cary 137, Buffalo, NY 14214, United States.
| | - Y Y Bai
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing 210009, China.
| | - D Ding
- University at Buffalo, Center For Hearing & Deafness, 3435 Main Street, Cary 137, Buffalo, NY 14214, United States.
| | - R Salvi
- University at Buffalo, Center For Hearing & Deafness, 3435 Main Street, Cary 137, Buffalo, NY 14214, United States; Department of Audiology and Speech-Language Pathology, Asia University, Taichung, Taiwan.
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Zhou B, Hong Z, Zhao Q, Ding D, Guo Q, Kojima S, Fukushima M. The fist year follow-up of Shanghai MCI cohort study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
It remains unresolved how insect embryos acquire sufficient oxygen to sustain high rates of respiratory metabolism during embryogenesis in the absence of a fully developed tracheal system. Our previous work showed that the two distinct subunits (Hc1 and Hc2) of haemocyanin (Hc), a copper-containing protein, display embryo-specific high expression that is essential for embryonic development and survival in the migratory locust Locusta migratoria. Here we investigated the role of haemocyanins in oxygen sensing and supply in the embryo of this locust. Putative binding sites for hypoxia-regulated transcription factors were identified in the promoter region of all of the Hc1 and Hc2 genes. Embryonic expression of haemocyanins was highly upregulated by ambient O2 deprivation, up to 10-fold at 13% O2 content. The degree of upregulation of haemocyanins increased with increasing levels of hypoxia. Compared with low-altitude locusts, embryonic expression of haemocyanins in high-altitude locusts from Tibetan plateau was constitutively higher and more robust to oxygen deprivation. These findings strongly suggest an active involvement of haemocyanins in oxygen exchange in embryos. We thus propose a mechanistic model for embryo respiration in which haemocyanin plays a key role by complementing the tracheal system for oxygen transport during embryogenesis.
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Affiliation(s)
- B Chen
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - R Ma
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - D Ding
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - L Wei
- College of Life Sciences, Hebei University, Baoding, China
| | - L Kang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Long L, Ding D, Han Z, Zhao H, Lin Q, Ding S. Thermotolerant hemicellulolytic and cellulolytic enzymes from Eupenicillium parvum 4-14 display high efficiency upon release of ferulic acid from wheat bran. J Appl Microbiol 2017; 121:422-34. [PMID: 27171788 DOI: 10.1111/jam.13177] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/13/2016] [Accepted: 05/05/2016] [Indexed: 11/28/2022]
Abstract
AIMS To characterize the hemicellulolytic and cellulolytic enzymes from novel fungi, and evaluate the potential of novel enzyme system in releasing ferulic acid (FA) from biomass resource. METHODS AND RESULTS A hemicellulolytic and cellulolytic enzyme-producing fungus 4-14 was isolated from soil by Congo red staining method, and identified as Eupenicillium parvum based on the morphologic and molecular phylogenetic analysis. The optimum temperature of fungal growth was 37°C. Hemicellulolytic and cellulolytic enzymes were produced by this fungus in solid-state fermentation (SSF), and their maximum activities were 554, 385, 218, 2·62 and 5·25 U g(-1) for CMCase, xylanase, β-glucosidase, FPase and FAE respectively. These enzymes displayed the best catalytic ability at low pH values (pH 4·5-5·0). The optimum temperatures were 70°C, 70°C, 75°C and 55°C for CMCase, β-glucosidase, xylanase and FAE respectively. CMCase, xylanase and FAE were stable at different pHs or high temperature (60°C). Enzymatic hydrolysis experiment indicated that the maximum (76·8 ± 4)% of total alkali-extractable FA was released from de-starched wheat bran by the fungal enzyme system. CONCLUSIONS High activities of thermotolerant CMCase, β-glucosidase, xylanase and FAE were produced by the newly isolated fungus E. parvum 4-14 in SSF. The fungal enzyme system displayed high efficiency at releasing FA from wheat bran. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides a new fungal strain for researches of novel hemicellulolytic and cellulolytic enzymes and will improve the bioconversion and utilization of agricultural by-products.
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Affiliation(s)
- L Long
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - D Ding
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Z Han
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - H Zhao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Q Lin
- Nanjing Institute for the Comprehensive Utilization of Wild Plants, Nanjing, China
| | - S Ding
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
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Chen GD, Ding D, Tian HY, Zhu YY, Cao WT, Wang C, Chen YM. Adherence to the 2006 American Heart Association's Diet and Lifestyle Recommendations for cardiovascular disease risk reduction is associated with bone mineral density in older Chinese. Osteoporos Int 2017; 28:1295-1303. [PMID: 27924380 DOI: 10.1007/s00198-016-3857-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 11/22/2016] [Indexed: 12/01/2022]
Abstract
UNLABELLED This cross-sectional study investigated the association between the modified 2006 American Heart Association Diet and Lifestyle Recommendations (AHA-DLR) and bone mineral density in Chinese adults. We found that better adherence to the AHA-DLR associated with higher bone mineral density (BMD) at multiple sites. INTRODUCTION Accumulating evidence shows that cardiovascular disease (CVD) and osteoporosis are associated with each other, yet little research has focused on whether strategies to reduce CVD risk could also benefit bone health. We aimed to assess the association between adherence to the modified 2006 American Heart Association Diet and Lifestyle Recommendations (AHA-DLR) and BMD in Chinese adults. METHODS We included 2092 women and 1051 men aged 40-75 years in this community-based cross-sectional study. Dietary information was assessed using a 79-item food frequency survey through face-to-face interviews at baseline (2008-2010) and 3 years later (2011-2013). Adherence to the AHA-DLR was assessed using modified diet and lifestyle scores (American Heart Association Diet and Lifestyle Score (AHA-DLS)) adjusted for bone health. BMD for the whole body, lumbar spine, total hip, femur neck, and trochanter sites was measured using dual-energy X-ray absorptiometry in 2011-2013. RESULTS After adjusting for potential covariates, greater adherence to the modified AHA-DLS was positively and dose-dependently associated with BMD. The mean BMD was 1.93-3.11% higher in quartile 4 (vs. 1) (all p values <0.01) at multiple sites. Five-unit increases in the modified AHA-DLS score were associated with 4.20-6.07, 4.44-8.51, and 3.36-4.67 mg/cm2 increases in BMD at multiple sites for the total subjects, males, and females, respectively (all p values <0.01). CONCLUSIONS Better adherence to the AHA-DLR shows protective associations with BMD at multiple sites in the middle-aged and elderly Chinese population.
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Affiliation(s)
- G D Chen
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - D Ding
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - H Y Tian
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Y Y Zhu
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - W T Cao
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - C Wang
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Y M Chen
- Department of Medical Statistics and Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
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Li N, Ding D, Pan X, Zhang Z, Zhu J, Boyer C, Zhu X. Temperature programed photo-induced RAFT polymerization of stereo-block copolymers of poly(vinyl acetate). Polym Chem 2017. [DOI: 10.1039/c7py01531c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Stereo-triblock copolymers of poly(vinyl acetate) are synthesized with controlled molecular weights based on a temperature-programed photo-induced RAFT in HFIP.
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Affiliation(s)
- Na Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Dongdong Ding
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Xiangqiang Pan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Zhengbiao Zhang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Jian Zhu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for Nano Medicine (ACN)
- School of Chemical Engineering
- UNSW Australia
- Sydney
- Australia
| | - Xiulin Zhu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
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Partridge S, Grunseit A, O’Hara B, Neubeck L, Ding D, Gallagher P, Freeman B, Bauman A, Phongsavan P, Gallagher R. Development of a Social Media Intervention for the Secondary Prevention of Cardiovascular Disease. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jin K, Neubeck L, Gullick J, Koo F, Ding D. Acculturation is Associated with Higher Prevalence of Cardiovascular Disease Risk Factors in Chinese Immigrants in Australia: Evidence from a Large Australian Cohort. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tang S, Luo F, Feng Y, Wei X, Miao H, Lu Y, Tang Y, Ding D, Jin J, Zhu Q. Neutral Ceramidase Secreted Via Exosome Protects Against Palmitate-Induced Apoptosis in INS-1 Cells. Exp Clin Endocrinol Diabetes 2016; 125:130-135. [PMID: 28008587 DOI: 10.1055/s-0042-116314] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S. Tang
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - F. Luo
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Y. Feng
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - X. Wei
- Endocrine and Diabetes Center, Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing University of Traditional Chinese Medicine, Branch of China Academy of Chinese Medical Science, Nanjing, China
| | - H. Miao
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Y. Lu
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Y. Tang
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - D. Ding
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - J. Jin
- China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin, China
| | - Q. Zhu
- Department of Endocrinology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Ding D, Kim T, Minnich AJ. Active Thermal Extraction and Temperature Sensing of Near-field Thermal Radiation. Sci Rep 2016; 6:32744. [PMID: 27595609 PMCID: PMC5011705 DOI: 10.1038/srep32744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/10/2016] [Indexed: 12/15/2022] Open
Abstract
Recently, we proposed an active thermal extraction (ATX) scheme that enables thermally populated surface phonon polaritons to escape into the far-field. The concept is based on a fluorescence upconversion process that also occurs in laser cooling of solids (LCS). Here, we present a generalized analysis of our scheme using the theoretical framework for LCS. We show that both LCS and ATX can be described with the same mathematical formalism by replacing the electron-phonon coupling parameter in LCS with the electron-photon coupling parameter in ATX. Using this framework, we compare the ideal efficiency and power extracted for the two schemes and examine the parasitic loss mechanisms. This work advances the application of ATX to manipulate near-field thermal radiation for applications such as temperature sensing and active radiative cooling.
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Affiliation(s)
- D. Ding
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - T. Kim
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - A. J. Minnich
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
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Jin K, Ding D, Gullick J, Koo F, Neubeck L. Marked Differences in Cardiovascular Risk Profiles in Middle-Aged and Older Chinese Residents: Evidence from a Large Australian Cohort. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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