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Koymeth S, Yao B, Paluch M, Dai S, Mokhtarinori N, Swadzba-Kwasny M, Wojnarowska Z. Non-Isochronal Behavior of Charge Transport at Liquid-Liquid and Liquid-Glass Transition in Aprotic Ionic Liquids. J Phys Chem B 2024. [PMID: 38742730 DOI: 10.1021/acs.jpcb.4c00939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
A reversible, first-order transition separating two liquid phases of a single-component material is a fascinating yet poorly understood phenomenon. Here, we investigate the liquid-liquid transition (LLT) ability of two tetraalkylphosphonium ionic liquids (ILs), [P666,14]Cl and [P666,14][1,2,4-triazolide], using differential scanning calorimetry and dielectric spectroscopy. The latter technique also allowed us to study the LLT at elevated pressure. We found that cooling below 205 K transforms [P666,14]Cl and [P666,14][Trz] from one liquid state (liquid 1) to another (the self-assembled liquid 2), while the latter facilitates the charge transport decoupled from structural dynamics. In contrast to temperature, pressure was found to play an essential role in the self-organization of a liquid 2 phase, resulting in different time scales of charge transport for rapidly and slowly compressed samples. Furthermore, τσ(PLL) was found to be much shorter than τσ(TLL, P=atm), which constitutes the first example of non-isochronal behavior of charge transport at LLT. In turn, dielectric studies through the liquid-glass transition revealed the non-monotonic behavior of τσ at elevated pressure for [P666,14]Cl, while for [P666,14][Trz] τσ(Pg) was almost constant. These results highlight the diversity of liquid-liquid transition features within the class of phosphonium ionic liquids.
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Affiliation(s)
- S Koymeth
- Institute of Physics, University of Silesia in Katowice, Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - B Yao
- Institute of Physics, University of Silesia in Katowice, Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - M Paluch
- Institute of Physics, University of Silesia in Katowice, Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - S Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Department of Chemistry, Institute for Advanced Materials & Manufacturing, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - N Mokhtarinori
- Department of Chemistry, Institute for Advanced Materials & Manufacturing, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - M Swadzba-Kwasny
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen's University of Belfast, David Keir Building, Stranmillis Rd, BT9 5AG Belfast, NI, U.K
| | - Z Wojnarowska
- Institute of Physics, University of Silesia in Katowice, Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
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Nie W, Ren T, Zhao W, Yao B, Yuan W, Liu X, Abdullah, Zhang J, Liu Q, Zhang T, Tang S, He C, Fang Y, Li X. Electrochemical Generation of Te Vacancy Pairs in PtTe for Efficient Hydrogen Evolution. ACS Appl Mater Interfaces 2024; 16:21828-21837. [PMID: 38639177 DOI: 10.1021/acsami.4c01273] [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: 04/20/2024]
Abstract
Two-dimensional (2D) van der Waals materials are increasingly seen as potential catalysts due to their unique structures and unmatched properties. However, achieving precise synthesis of these remarkable materials and regulating their atomic and electronic structures at the most fundamental level to enhance their catalytic performance remain a significant challenge. In this study, we synthesized single-crystal bulk PtTe crystals via chemical vapor transport and subsequently produced atomically thin, large PtTe nanosheets (NSs) through electrochemical cathode intercalation. These NSs are characterized by a significant presence of Te vacancy pairs, leading to undercoordinated Pt atoms on their basal planes. Experimental and theoretical studies together reveal that Te vacancy pairs effectively optimize and enhance the electronic properties (such as charge distribution, density of states near the Fermi level, and d-band center) of the resultant undercoordinated Pt atoms. This optimization results in a significantly higher percentage of dangling O-H water, a decreased energy barrier for water dissociation, and an increased binding affinity of these Pt atoms to active hydrogen intermediates. Consequently, PtTe NSs featuring exposed and undercoordinated Pt atoms demonstrate outstanding electrocatalytic activity in hydrogen evolution reactions, significantly surpassing the performance of standard commercial Pt/C catalysts.
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Affiliation(s)
- Wenjie Nie
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China
| | - Taotao Ren
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Wen Zhao
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Bingqing Yao
- Department of Materials Science and Engineering, National University of Singapore, Singapore 119077, Singapore
| | - Wenhao Yuan
- Department of Materials Science and Engineering, National University of Singapore, Singapore 119077, Singapore
| | - Xuan Liu
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Abdullah
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jiaxun Zhang
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Qiyuan Liu
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Tianqing Zhang
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Shangfeng Tang
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Chi He
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yiyun Fang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xinzhe Li
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
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Yao B, Li L, Guan X, Zhu J, Liu Q, Qu B, Ding H. Endurance Training Inhibits the JAK2/STAT3 Pathway to Alleviate Sarcopenia. Physiol Res 2024; 73:295-304. [PMID: 38710060 PMCID: PMC11081189] [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] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/05/2023] [Indexed: 05/08/2024] Open
Abstract
Aging leads to a decrease in muscle function, mass, and strength in skeletal muscle of animals and humans. The transcriptome identified activation of the JAK/STAT pathway, a pathway that is associated with skeletal muscle atrophy, and endurance training has a significant effect on improving sarcopenia; however, the exact mechanism still requires further study. We investigated the effect of endurance training on sarcopenia. Six-month-old male SAMR1 mice were used as a young control group (group C), and the same month-old male SAMP8 mice were divided into an exercise group (group E) and a model group (group M). A 3-month running exercise intervention was performed on group E, and the other two groups were kept normally. Aging caused significant signs of sarcopenia in the SAMP8 mice, and endurance training effectively improved muscle function, muscle mass, and muscle strength in the SAMP8 mice. The expression of JAK2/STAT3 pathway factor was decreased in group E compared with group M, and the expression of SOCS3, the target gene of STAT3, and NR1D1, an atrophy-related factor, was significantly increased. Endurance training significantly improved the phenotypes associated with sarcopenia, and the JAK2/STAT3 pathway is a possible mechanism for the improvement of sarcopenia by endurance training, while NR1D1 may be its potential target. Keywords: Sarcopenia, Endurance training, Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3), Nuclear receptor subfamily 1, group D member 1 (Nr1d1).
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Affiliation(s)
- B Yao
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, Sichuan, China.
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Chen X, Shui X, Xu H, Peng J, Deng H, Zhong J, Wang C, Wu J, Yan J, Yao B, Xiong Z, Xu W, Yang X. Sudomotor dysfunction is associated with impaired left ventricular diastolic function in persons with type 2 diabetes: a cross-sectional study. J Endocrinol Invest 2024; 47:973-982. [PMID: 37999892 DOI: 10.1007/s40618-023-02214-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/26/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND The incidence of preserved ejection fraction heart failure has significantly increased in persons with type 2 diabetes mellitus (T2DM). Left ventricular (LV) diastolic dysfunction is an early and important manifestation of preserved ejection fraction heart failure. The onset of heart failure in persons with diabetes is associated with diabetic neuropathy. However, the relationship among sudomotor function, which is an early manifestation of small fiber neuropathy, and LV diastolic function remains unclear. This study aimed to explore the association between sudomotor function and LV diastolic function in persons with T2DM. METHODS In total, 699 persons with T2DM were enrolled and divided into three groups according to electrochemical skin conductance (ESC) assessed using the SUDOSCAN device: "no dysfunction" group (NSF), "moderate dysfunction" group (MDF), and "severe dysfunction" group (SDF). LV diastolic function was assessed using Doppler echocardiography. To evaluate the relationship between ESC and echocardiographic parameters, Pearson's correlation analysis was performed. Additionally, logistic regression analysis was used to determine the association between LV diastolic function and ESC. A receiver operating characteristic (ROC) curve was constructed to evaluate the performance of sudomotor function indicators in detecting impaired cardiac diastolic function. RESULTS There were 301 persons (43.06%) in the NSF group, 232 (33.19%) in the MDF group, and 166 (23.75%) in the SDF group. Compared to the NSF group, the MDF and SDF groups had higher A and E/e' and lower e' values (all p < 0.05). Pearson's correlation analysis showed that A and E/e' were negatively associated with foot ESC (FESC) and hand ESC (HESC), whereas e' was positively associated with FESC and HESC (all p < 0.05). After adjusting for confounding factors, binary logistic regression analysis showed that ESC was independently associated with impaired LV diastolic function (p = 0.003). The area under the ROC curve values for FESC and HESC were 0.621 and 0.635, respectively (both p < 0.05). CONCLUSIONS Deteriorating sudomotor function was associated with reduced diastolic function indicators. ESC can be used as a biomarker for detecting LV diastolic impairment.
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Affiliation(s)
- X Chen
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - X Shui
- Department of Cardiovascular Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - H Xu
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - J Peng
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - H Deng
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - J Zhong
- Department of Ultrasonography, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - C Wang
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - J Wu
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - J Yan
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - B Yao
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China
| | - Z Xiong
- Department of Cardiovascular Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China.
| | - W Xu
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China.
| | - X Yang
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Guangzhou, 510630, China.
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Li J, Chen Y, Yao B, Yang W, Cui X, Liu H, Dai S, Xi S, Sun Z, Chen W, Qin Y, Wang J, He Q, Ling C, Wang D, Zhang Z. Cascade Dual Sites Modulate Local CO Coverage and Hydrogen-Binding Strength to Boost CO 2 Electroreduction to Ethylene. J Am Chem Soc 2024; 146:5693-5701. [PMID: 38335459 DOI: 10.1021/jacs.4c00475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Rationally modulating the binding strength of reaction intermediates on surface sites of copper-based catalysts could facilitate C-C coupling to generate multicarbon products in an electrochemical CO2 reduction reaction. Herein, theoretical calculations reveal that cascade Ag-Cu dual sites could synergistically increase local CO coverage and lower the kinetic barrier for CO protonation, leading to enhanced asymmetric C-C coupling to generate C2H4. As a proof of concept, the Cu3N-Ag nanocubes (NCs) with Ag located in partial Cu sites and a Cu3N unit center are successfully synthesized. The Faraday efficiency and partial current density of C2H4 over Cu3N-Ag NCs are 7.8 and 9.0 times those of Cu3N NCs, respectively. In situ spectroscopies combined with theoretical calculations confirm that Ag sites produce CO and Cu sites promote asymmetric C-C coupling to *COCHO, significantly enhancing the generation of C2H4. Our work provides new insights into the cascade catalysis strategy at the atomic scale for boosting CO2 to multicarbon products.
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Affiliation(s)
- Junjun Li
- Department of Chemistry, School of Science; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, China
| | - Yu Chen
- Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing 211189, China
| | - Bingqing Yao
- Department of Material Science and Engineering, College of Design and Engineering, National University of Singapore, 9 Engineering Drive 1, EA #03-09, Singapore 117575, Singapore
| | - Wenjuan Yang
- Julong College, Shenzhen Technology University, Shenzhen 518118, China
| | - Xiaoya Cui
- Ministry of Education Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Huiling Liu
- Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Functional Porous Materials, Tianjin University of Technology, Tianjin 300384, China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Shibo Xi
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road Jurong Island, Singapore 627833, Republic of Singapore
| | - Zhiyi Sun
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Wenxing Chen
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yuchen Qin
- College of Sciences, Henan Agricultural University, Zhengzhou 450000, P. R. China
| | - Jinlan Wang
- Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing 211189, China
| | - Qian He
- Department of Material Science and Engineering, College of Design and Engineering, National University of Singapore, 9 Engineering Drive 1, EA #03-09, Singapore 117575, Singapore
| | - Chongyi Ling
- Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing 211189, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Zhicheng Zhang
- Department of Chemistry, School of Science; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, China
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Li Z, Yao B, Cheng C, Song M, Qin Y, Wan Y, Du J, Zheng C, Xiao L, Li S, Yin PF, Guo J, Liu Z, Zhao M, Huang W. Versatile Structural Engineering of Metal-Organic Frameworks Enabling Switchable Catalytic Selectivity. Adv Mater 2023:e2308427. [PMID: 38109695 DOI: 10.1002/adma.202308427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/26/2023] [Indexed: 12/20/2023]
Abstract
The structure engineering of metal-organic frameworks (MOFs) forms the cornerstone of their applications. Nonetheless, realizing the simultaneous versatile structure engineering of MOFs remains a significant challenge. Herein, a dynamically mediated synthesis strategy to simultaneously engineer the crystal structure, defect structure, and nanostructure of MOFs is proposed. These include amorphous Zr-ODB nanoparticles, crystalline Zr-ODB-hz (ODB = 4,4'-oxalyldibenzoate, hz = hydrazine) nanosheets, and defective d-Zr-ODB-hz nanosheets. Aberration-corrected scanning transmission electron microscopy combined with low-dose high-angle annular dark-field imaging technique vividly portrays these engineered structures. Concurrently, the introduced hydrazine moieties confer self-reduction properties to the respective MOF structures, allowing the in situ installation of catalytic Pd nanoparticles. Remarkably, in the hydrogenation of vanillin-like biomass derivatives, Pd/Zr-ODB-hz yields partially hydrogenated alcohols as the primary products, whereas Pd/d-Zr-ODB-hz exclusively produces fully hydrogenated alkanes. Density functional theory calculations, coupled with experimental evidence, uncover the catalytic selectivity switch triggered by the change in structure type. The proposed strategy of versatile structure engineering of MOFs introduces an innovative pathway for the development of high-performance MOF-based catalysts for various reactions.
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Affiliation(s)
- Zhixi Li
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Xi'an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi'an, 710129, P. R. China
| | - Bingqing Yao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Chuanqi Cheng
- Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Meina Song
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Yutian Qin
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Yue Wan
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Jing Du
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Chaoyang Zheng
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Liyun Xiao
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Shaopeng Li
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Peng-Fei Yin
- Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Jun Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, China
| | - Zhengqing Liu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Xi'an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi'an, 710129, P. R. China
| | - Meiting Zhao
- Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 30007, China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Xi'an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi'an, 710129, P. R. China
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7
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Yao B, Xin ZK, Wang D. The effect of curcumin on on intravitreal proinflammatory cytokines, oxidative stress markers, and vascular endothelial growth factor in an experimental model of diabetic retinopathy. J Physiol Pharmacol 2023; 74. [PMID: 38345446 DOI: 10.26402/jpp.2023.6.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 12/31/2023] [Indexed: 02/15/2024]
Abstract
The prevalence of diabetic retinopathy (DR) is high among individuals with diabetes. Curcumin (CUR) has been suggested as a possible treatment for this condition. This study aimed to investigate the impact of CUR on pro-inflammatory cytokines, oxidative stress markers, and vascular endothelial growth factor (VEGF) in an experimental model of DR. The study used Spontaneously Diabetic Torii (SDT) rats and divided them into groups to receive various CUR doses (10, 50, 100 mg/kg/day) or distilled water for four weeks. Non-diabetic Sprague-Dawley (SD) rats were used as a control group. Pro-inflammatory cytokines (interleukin (IL)-1, IL-6, tumor necrosis factor alpha (TNF-α), interferon gamma (IFN-γ)) (by ELISA), oxidative stress markers (superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GPX), catalase (CAT)), and VEGF expression (by RT-PCR) and content (by Western-blot and immunostaining) were assessed as outcome measures. The study found that diabetic rats who received varying doses of CUR showed a decrease in pro-inflammatory cytokines (TNF-α, IFN-γ, IL-1), oxidative stress markers (SOD, MDA, GPX, CAT), and VEGF expression and content in the vitreous. The decrease in these markers was dose-dependent and significantly different from diabetic rats who did not receive CUR (p<0.01). However, there was no significant difference in the vitreous level of IL-6 between the groups (p=0.35). The study concluded that CUR has the potential to alleviate inflammation and oxidative stress induced by diabetes in the vitreous microenvironment of rats. CUR also reduced the increase in VEGF levels in the vitreous of diabetic rats. These findings suggest that CUR could be a viable therapeutic option for the treatment of DR.
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Affiliation(s)
- B Yao
- Department of Ophthalmology, Aviation General Hospital, Beijing, China.
| | - Z K Xin
- Department of Ophthalmology, Aviation General Hospital, Beijing, China
| | - D Wang
- Department of Clinical Laboratory, Aviation General Hospital, Beijing, China
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8
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Fu Q, Cong X, Xu X, Zhu S, Zhao X, Liu S, Yao B, Xu M, Deng Y, Zhu C, Wang X, Kang L, Zeng Q, Lin ML, Wang X, Tang B, Yang J, Dong Z, Liu F, Xiong Q, Zhou J, Wang Q, Li X, Tan PH, Tay BK, Liu Z. Berry Curvature Dipole Induced Giant Mid-Infrared Second-Harmonic Generation in 2D Weyl Semiconductor. Adv Mater 2023; 35:e2306330. [PMID: 37737448 DOI: 10.1002/adma.202306330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/05/2023] [Indexed: 09/23/2023]
Abstract
Due to its inversion-broken triple helix structure and the nature of Weyl semiconductor, 2D Tellurene (2D Te) is promising to possess a strong nonlinear optical response in the infrared region, which is rarely reported in 2D materials. Here, a giant nonlinear infrared response induced by large Berry curvature dipole (BCD) is demonstrated in the Weyl semiconductor 2D Te. Ultrahigh second-harmonic generation response is acquired from 2D Te with a large second-order nonlinear optical susceptibility (χ(2) ), which is up to 23.3 times higher than that of monolayer MoS2 in the range of 700-1500 nm. Notably, distinct from other 2D nonlinear semiconductors, χ(2) of 2D Te increases extraordinarily with increasing wavelength and reaches up to 5.58 nm V-1 at ≈2300 nm, which is the best infrared performance among the reported 2D nonlinear materials. Large χ(2) of 2D Te also enables the high-intensity sum-frequency generation with an ultralow continuous-wave (CW) pump power. Theoretical calculations reveal that the exceptional performance is attributed to the presence of large BCD located at the Weyl points of 2D Te. These results unravel a new linkage between Weyl semiconductor and strong optical nonlinear responses, rendering 2D Te a competitive candidate for highly efficient nonlinear 2D semiconductors in the infrared region.
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Affiliation(s)
- Qundong Fu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- IRL 3288 CINTRA (CNRS-NTU-THALES Research Alliances), Nanyang Technological University, Singapore, 637553, Singapore
| | - Xin Cong
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
| | - Xiaodong Xu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Song Zhu
- School of Electrical & Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Xiaoxu Zhao
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Sheng Liu
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Bingqing Yao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Manzhang Xu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ya Deng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Chao Zhu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Xiaowei Wang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Lixing Kang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Qingsheng Zeng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Miao-Ling Lin
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
| | - Xingli Wang
- IRL 3288 CINTRA (CNRS-NTU-THALES Research Alliances), Nanyang Technological University, Singapore, 637553, Singapore
| | - Bijun Tang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Jianqun Yang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Zhili Dong
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Fucai Liu
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Qihua Xiong
- State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, P. R. China
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, P. R. China
| | - Jiadong Zhou
- Key Lab of advanced optoelectronic quantum architecture and measurement (Ministry of Education), Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems, and School of Physics, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Qijie Wang
- IRL 3288 CINTRA (CNRS-NTU-THALES Research Alliances), Nanyang Technological University, Singapore, 637553, Singapore
- School of Electrical & Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Xingji Li
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Ping-Heng Tan
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
| | - Beng Kang Tay
- IRL 3288 CINTRA (CNRS-NTU-THALES Research Alliances), Nanyang Technological University, Singapore, 637553, Singapore
| | - Zheng Liu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- IRL 3288 CINTRA (CNRS-NTU-THALES Research Alliances), Nanyang Technological University, Singapore, 637553, Singapore
- Institute for Functional Intelligent Materials, National University of Singapore, Blk S9, Level 9, 4 Science Drive 2, Singapore, 117544, Singapore
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9
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He YJ, Zhou ZL, Qin QY, Huang BJ, Huang XY, Li JM, Zhu MM, Yao B, Wang DJ, Qiu JG, Wang H, Ma TH. [Pelvic exenteration for late complications of radiation-induced pelvic injury: a preliminary study]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:940-946. [PMID: 37849264 DOI: 10.3760/cma.j.cn441530-20230816-00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Objective: To investigate the safety and efficacy of total pelvic exenteration (TPE) for treating late complications of radiation-induced pelvic injury. Methods: This was a descriptive case series study. The inclusion criteria were as follows: (1) confirmed radiation-induced pelvic injury after radiotherapy for pelvic malignancies; (2) late complications of radiation-induced pelvic injury, such as bleeding, perforation, fistula, and obstruction, involving multiple pelvic organs; (3) TPE recommended by a multidisciplinary team; (4) patient in good preoperative condition and considered fit enough to tolerate TPE; and (5) patient extremely willing to undergo the procedure and accept the associated risks. The exclusion criteria were as follows: (1) preoperative or intraoperative diagnosis of tumor recurrence or metastasis; (2) had only undergone diversion or bypass surgery after laparoscopic exploration; and (3) incomplete medical records. Clinical and follow-up data of patients who had undergone TPE for late complications of radiation-induced pelvic injury between March 2020 and September 2022 at the Sixth Affiliated Hospital of Sun Yat-sen University were analyzed. Perioperative recovery, postoperative complications, perioperative deaths, and quality of life 1 year postoperatively were recorded. Results: The study cohort comprised 14 women, nine of whom had recto-vagino-vesical fistulas, two vesicovaginal fistulas, one ileo-vesical fistula and rectal necrosis, one ileo-vesical and rectovaginal fistulas, and one rectal ulcer and bilateral ureteral stenosis. The mean duration of surgery was 592.1±167.6 minutes and the median blood loss 550 (100-6000) mL. Ten patients underwent intestinal reconstruction, and four the Hartmann procedure. Ten patients underwent urinary reconstruction using Bricker's procedure and 7 underwent pelvic floor reconstruction. The mean postoperative hospital stay was 23.6±14.9 days. Seven patients (7/14) had serious postoperative complications (Clavien-Dindo IIIa to IVb), including surgical site infections in eight, abdominopelvic abscesses in five, pulmonary infections in five, intestinal obstruction in four, and urinary leakage in two. Empty pelvis syndrome (EPS) was diagnosed in five patients, none of whom had undergone pelvic floor reconstruction. Five of the seven patients who had not undergone pelvic floor reconstruction developed EPS, compared with none of those who had undergone pelvic floor reconstruction. One patient with EPS underwent reoperation because of a pelvic abscess, pelvic hemorrhage, and intestinal obstruction. There were no perioperative deaths. During 18.9±10.1 months of follow-up, three patients died, two of renal failure, which was a preoperative comorbidity, and one of COVID-19. The remaining patients had gradual and significant relief of symptoms during follow-up. QLQ-C30 assessment of postoperative quality of life showed gradual improvement in all functional domains and general health at 1, 3, and 6 months postoperatively (all P<0.05). Conclusions: TPE is a feasible procedure for treating late complications of radiation-induced pelvic injury combined with complex pelvic fistulas. TPE is effective in alleviating symptoms and improving quality of life. However, the indications for this procedure should be strictly controlled and the surgery carried out only by experienced surgeons.
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Affiliation(s)
- Y J He
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - Z L Zhou
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - Q Y Qin
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - B J Huang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - X Y Huang
- Department of Pharmacy, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - J M Li
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - M M Zhu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - B Yao
- Department of Urology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - D J Wang
- Department of Urology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - J G Qiu
- Department of Urology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - H Wang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China
| | - T H Ma
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University; Biomedical Innovation Center, The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou 510655, China Department of Clinical Nutrition and Microecology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
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10
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Gao Q, Yan Z, Zhang W, Pillai HS, Yao B, Zang W, Liu Y, Han X, Min B, Zhou H, Ma L, Anaclet B, Zhang S, Xin H, He Q, Zhu H. Atomic Layers of B2 CuPd on Cu Nanocubes as Catalysts for Selective Hydrogenation. J Am Chem Soc 2023; 145:19961-19968. [PMID: 37651158 DOI: 10.1021/jacs.3c06514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The search for highly active and selective catalysts with high precious metal atom utilization efficiency has attracted increasing interest in both the fundamental synthesis of materials and important industrial reactions. Here, we report the synthesis of Pd-Cu nanocubes with a Cu core and an ordered B2 intermetallic CuPd shell with controllable atomic layers on the surface (denoted as Cu/B2 CuPd), which can efficiently and robustly catalyze the selective hydrogenation of acetylene (C2H2) to ethylene (C2H4) under mild conditions. The optimized Cu/B2 CuPd with a Pd loading of 9.5 at. % exhibited outstanding performance in the C2H2 semi-hydrogenation with 100% C2H2 conversion and 95.2% C2H4 selectivity at 90 °C. We attributed this outstanding performance to the core/shell structure with a high surface density of active Pd sites isolated by Cu in the B2 intermetallic matrix, representing a structural motif of single-atom alloys (SAAs) on the surface. The combined experimental and computational studies further revealed that the electronic states of Pd and Cu are modulated by SAAs from the synergistic effect between Pd and Cu, leading to enhanced performance compared with pristine Pd and Cu catalysts. This study provides a new synthetic methodology for making single-atom catalysts with high precious metal atom utilization efficiency, enabling simultaneous tuning of both geometric and electronic structures of Pd active sites for enhanced catalysis.
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Affiliation(s)
- Qiang Gao
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Zihao Yan
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Weijie Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hemanth Somarajan Pillai
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Bingqing Yao
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Wenjie Zang
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Yuanqi Liu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Xue Han
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Bokki Min
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hua Zhou
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Lu Ma
- National Synchrotron Light Source II (NSLS-II), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Bukuru Anaclet
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hongliang Xin
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Qian He
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Huiyuan Zhu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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11
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Yao B, Huang L, Wang R, Yue X. Conjunctival condylomata acuminata in a syphilis patient. QJM 2023; 116:584-585. [PMID: 37052528 DOI: 10.1093/qjmed/hcad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 04/10/2023] [Indexed: 04/14/2023] Open
Affiliation(s)
- B Yao
- Department of Ophthalmology, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, Jiangsu Province, China
| | - L Huang
- Department of Dermatology, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui branch, Southeast University, Nanjing, Jiangsu Province, China
| | - R Wang
- Department of Dermatology, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui branch, Southeast University, Nanjing, Jiangsu Province, China
| | - X Yue
- Department of Pathology, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui branch, Southeast University, Nanjing, Jiangsu Province, China
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12
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Yuan H, Yao B, Li JT, Zhu WL, Ren DL, Wang H, Ma TH, Chen SQ, Wu JJ, Tao YR, Ye L, Wang ZY, Qu H, Ma B, Zhong WW, Wang DJ, Qiu JG. [Observational study on perioperative outcomes of pelvic exenteration]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:260-267. [PMID: 36925126 DOI: 10.3760/cma.j.cn441530-20221024-00428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: To investigate the surgical indications and perioperative clinical outcomes of pelvic exenteration (PE) for locally advanced, recurrent pelvic malignancies and complex pelvic fistulas. Methods: This was a descriptive study.The indications for performing PE were: (1) locally advanced, recurrent pelvic malignancy or complex pelvic fistula diagnosed preoperatively by imaging and pathological examination of a biopsy; (2)preoperative agreement by a multi-disciplinary team that non-surgical and conventional surgical treatment had failed and PE was required; and (3) findings on intraoperative exploration confirming this conclusion.Contraindications to this surgical procedure comprised cardiac and respiratory dysfunction, poor nutritional status,and mental state too poor to tolerate the procedure.Clinical data of 141 patients who met the above criteria, had undergone PE in the Sixth Affiliated Hospital of Sun Yat-sen University from January 2018 to September 2022, had complete perioperative clinical data, and had given written informed consent to the procedure were collected,and the operation,relevant perioperative variables, postoperative pathological findings (curative resection), and early postoperative complications were analyzed. Results: Of the 141 included patients, 43 (30.5%) had primary malignancies, 61 (43.3%) recurrent malignancies, 28 (19.9%) complex fistulas after radical resection of malignancies,and nine (6.4%)complex fistulas caused by benign disease. There were 79 cases (56.0%) of gastrointestinal tumors, 30 cases (21.3%) of reproductive tumors, 16 cases (11.3%) of urinary tumors, and 7 cases (5.0%) of other tumors such mesenchymal tissue tumors. Among the 104 patients with primary and recurrent malignancies, 15 patients with severe complications of pelvic perineum of advanced tumors were planned to undergo palliative PE surgery for symptom relief after preoperative assessment of multidisciplinary team; the other 89 patients were evaluated for radical PE surgery. All surgeries were successfully completed. Total PE was performed on 73 patients (51.8%),anterior PE on 22 (15.6%),and posterior PE in 46 (32.6%). The median operative time was 576 (453,679) minutes, median intraoperative blood loss 500 (200, 1 200) ml, and median hospital stay 17 (13.0,30.5)days.There were no intraoperative deaths. Of the 89 patients evaluated for radical PE surgery, the radical R0 resection was achieved in 64 (71.9%) of them, R1 resection in 23 (25.8%), and R2 resection in two (2.2%). One or more postoperative complications occurred in 85 cases (60.3%), 32 (22.7%)of which were Clavien-Dindo grade III and above.One patient (0.7%)died during the perioperative period. Conclusion: PE is a valid option for treating locally advanced or recurrent pelvic malignancies and complex pelvic fistulas.
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Affiliation(s)
- H Yuan
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - B Yao
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - J T Li
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - W L Zhu
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - D L Ren
- Department of Pelvic Floor Diseases, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - H Wang
- Department of Colorectal Surgery, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - T H Ma
- Department of Colorectal Surgery, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - S Q Chen
- Department of Gynecology, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - J J Wu
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - Y R Tao
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - L Ye
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - Z Y Wang
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - H Qu
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - B Ma
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - W W Zhong
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - D J Wang
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
| | - J G Qiu
- Department of Urology, the Sixth Affiliated Hospital, Sun Yat-sen University,Guangzhou 510655, China
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13
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Zhao L, Akdim O, Huang X, Wang K, Douthwaite M, Pattisson S, Lewis RJ, Lin R, Yao B, Morgan DJ, Shaw G, He Q, Bethell D, McIntosh S, Kiely CJ, Hutchings GJ. Insights into the Effect of Metal Ratio on Cooperative Redox Enhancement Effects over Au- and Pd-Mediated Alcohol Oxidation. ACS Catal 2023; 13:2892-2903. [PMID: 36910870 PMCID: PMC9990151 DOI: 10.1021/acscatal.2c06284] [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: 12/21/2022] [Revised: 01/30/2023] [Indexed: 02/12/2023]
Abstract
The aerobic oxidation of alcohols and aldehydes over supported heterogeneous catalysts can be considered as comprising two complementary and linked processes: dehydrogenation and oxygen reduction. Significant rate enhancements can be observed when these processes are catalyzed by independent active sites, coupled by electron transport between the two catalysts. This effect, termed cooperative redox enhancement (CORE), could significantly influence how researchers approach catalyst design, but a greater understanding of the factors which influence it is required. Herein, we demonstrate that the Au/Pd ratio used in physical mixtures of monometallic catalysts and phase-separated Au and Pd bimetallic catalysts dramatically influences the degree to which CORE effects can promote alcohol oxidation. Perhaps more interestingly, the roles of Au and Pd in this coupled system are determined to be interchangeable. Preliminarily, we hypothesize that this is attributed to the relative rates of the coupled reactions and demonstrate how physical properties can influence this. This deeper understanding of the factors which influence CORE is an important development in bimetallic catalysis.
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Affiliation(s)
- Liang Zhao
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Ouardia Akdim
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Xiaoyang Huang
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Kai Wang
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Mark Douthwaite
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Samuel Pattisson
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Richard J Lewis
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Runjia Lin
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Bingqing Yao
- Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, 119077 Singapore
| | - David J Morgan
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Greg Shaw
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Qian He
- Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, 119077 Singapore
| | - Donald Bethell
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Steven McIntosh
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Christopher J Kiely
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States.,Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Graham J Hutchings
- Max Planck- Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
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14
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Zhao T, Liu L, Zhou C, Zheng Z, Li H, Xie Q, Yao B, Ren L, Chai J, Dong Z, Zhao C, Chen J. Enhancement of Out-of-Plane Spin-Orbit Torque by Interfacial Modification. Adv Mater 2023; 35:e2208954. [PMID: 36647621 DOI: 10.1002/adma.202208954] [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: 09/28/2022] [Revised: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Spin-orbit torque (SOT)-induced switching of perpendicular magnetization in the absence of magnetic field is crucial for the application of SOT-based spintronic devices. Recent works have demonstrated that the low-symmetry crystal structure in CuPt/CoPt can give rise to an out-of-plane (OOP) spin torque and lead to deterministic magnetization switching without an external field. However, it is essential to improve OOP effective field for the efficient switching. In this work, the impact of interface oxidation on the generation of OOP effective field in a CuPt/ferromagnet heterostructure is systematically studied. By introducing an oxidized CuPt surface, it is found that the field-free switching performance shows remarkable improvement. OOP effective field measurement indicates that the oxidation treatment can enhance the OOP effective field by more than two times. It is also demonstrated that this oxidation-induced OOP SOT efficiency enhancement is independent of the device shapes, magnetic materials, or magnetization easy axis. This work contributes to improve the performance of SOT devices and provides an effective fabrication guidance for future spintronic devices that utilize OOP SOT.
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Affiliation(s)
- Tieyang Zhao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Liang Liu
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chenghang Zhou
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Zhenyi Zheng
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Huihui Li
- Beijing Superstring Academy of Memory Technology, Beijing, 100176, China
| | - Qidong Xie
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Bingqing Yao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Lizhu Ren
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Jianwei Chai
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), Singapore, 138634, Singapore
| | - Zhili Dong
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Chao Zhao
- Beijing Superstring Academy of Memory Technology, Beijing, 100176, China
| | - Jingsheng Chen
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), Singapore, 138634, Singapore
- Chongqing Research Institute, National University of Singapore, Chongqing, 401120, China
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15
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Yao B, Paluch M, Wojnarowska Z. Effect of bulky anions on the liquid-liquid phase transition in phosphonium ionic liquids: Ambient and high-pressure dielectric studies. Sci Rep 2023; 13:3040. [PMID: 36810358 PMCID: PMC9944924 DOI: 10.1038/s41598-023-29518-8] [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: 07/07/2022] [Accepted: 02/06/2023] [Indexed: 02/23/2023] Open
Abstract
Although the first-order liquid-liquid phase transition (LLT) has been reported to exist in various systems (i.e., phosphorus, silicon, water, triphenyl phosphite, etc.), it is still one of the most challenging problems in the field of physical science. Recently, we found that this phenomenon occurs in the family of trihexyl(tetradecyl)phosphonium [P666,14]+ based ionic liquids (ILs) with different anions (Wojnarowska et al in Nat Commun 13:1342, 2022). To understand the molecular structure-property relationships governing LLT, herein, we examine ion dynamics of two other quaternary phosphonium ILs containing long alkyl chains in cation and anion. We found that IL with the anion containing branched -O-(CH2)5-CH3 side chains does not reveal any signs of LLT, while IL with shorter alkyl chains in the anion brings a hidden LLT, i.e., it overlaps with the liquid-glass transition. Ambient pressure dielectric and viscosity measurements revealed a peculiar behavior of ion dynamics near Tg for IL with hidden LLT. Moreover, high-pressure studies have shown that IL with hidden LLT has relatively strong pressure sensitivity compared to the one without first-order phase transition. At the same time, the former exposes the inflection point indicating the concave-convex character of logτσ(P) dependences.
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Affiliation(s)
- B. Yao
- grid.11866.380000 0001 2259 4135Institute of Physics, University of Silesia, SMCEBI, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - M. Paluch
- grid.11866.380000 0001 2259 4135Institute of Physics, University of Silesia, SMCEBI, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Z. Wojnarowska
- grid.11866.380000 0001 2259 4135Institute of Physics, University of Silesia, SMCEBI, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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16
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Yao B, Wu R, Chen BH, Wesemann LD, Xu JR, Zhou Y, Wu LM. Cardiovascular magnetic resonance myocardial feature tracking for the determination of left atrial strain in hypertensive left ventricular hypertrophy and hypertrophic cardiomyopathy. Clin Radiol 2023; 78:e409-e416. [PMID: 36746719 DOI: 10.1016/j.crad.2022.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/07/2022] [Accepted: 12/28/2022] [Indexed: 01/23/2023]
Abstract
AIM To measure the left atrial (LA) function in patients with hypertrophic cardiomyopathy (HCM; with [OHCM] and without obstruction [NOHCM]) and hypertension-related left ventricular hypertrophy (H-LVH) using cardiovascular magnetic resonance imaging feature tracking (CMR-FT). MATERIALS AND METHODS Patients who met the criteria for HCM (n=68), H-LVH (n=46), and 30 healthy controls participated. Left atrial strain was analysed using CMR-FT in cine images with two and four chambers. RESULTS The strain rate and LA strain measurements showed that patients with HCM, and H-LVH had impaired conduit and reservoir functions (versus controls). These capacities were more severely impaired in OHCM than those seen in NOHCM and H-LVH. The LA volume parameters (LAVIpac, LAVImin and LAVImax) from the OHCM group were higher than both the NOHCM and H-LVH groups (all p<0.05). There were differences between the OHCM and H-LVH groups in terms of the parameters for LA reservoir function (εs), booster pump function (SRa), and conduit function (SRe, LA passive EF, εe; p<0.05). The strongest correlations included the associations between LA total EF and εs, εe and LA passive EF, and SRe and LA passive EF. CONCLUSION CMR-FT can reliably identify LA dysfunction and deformation in the early stages of HCM and H-LVH.
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Affiliation(s)
- B Yao
- Department of Radiology, Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou 215000, China
| | - R Wu
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - B-H Chen
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - L D Wesemann
- Department of Radiology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
| | - J-R Xu
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Y Zhou
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - L-M Wu
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
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17
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Fu A, Yao B, Dong T, Cai S. Emerging roles of intratumor microbiota in cancer metastasis. Trends Cell Biol 2022:S0962-8924(22)00258-6. [DOI: 10.1016/j.tcb.2022.11.007] [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] [Received: 08/31/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 12/15/2022]
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18
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Zang K, Yu ZH, Wang M, Huang Y, Zhu XX, Yao B. SOX2 como posible biomarcador pronóstico y diana molecular en el cáncer de pulmón: metaanálisis. Rev Clin Esp 2022; 222:584-592. [PMID: 35941044 DOI: 10.1016/j.rceng.2022.05.006] [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: 04/12/2022] [Accepted: 05/30/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To determine the association of SOX2 with the prognosis in lung cancer, studies providing survival information were selected based on multivariate Cox regression analysis. MATERIAL AND METHODS PubMed, Embase, and Web of Science databases were searched to identify eligible studies before June 19, 2021. The hazard ratios (HR) with 95% confidence intervals (CI) were calculated to assess the prognostic impact of SOX2 based on multivariate Cox regression analysis. Publication bias was used to assess the risk of bias. Functional analysis of SOX2 was also conducted. RESULTS 13 studies with a total of 2008 patients with lung cancer were included. SOX2 expression was not correlated with overall survival in lung cancer (10 studies with 1591 cases). Between-study heterogeneity was noted (I2=85.6%, p<0.0001). Subgroup analysis suggested that no correlation was found between SOX2 expression and overall survival in non-small cell lung cancer (NSCLC: eight studies with 1319 cases) and small-cell lung cancer (SCLC: two studies with 272 cases). SOX2 expression was significantly associated with worse time-to-progression (two studies with 104 cases: HR=3.50, 95% CI=1.34-9.15) and recurrence-free survival (two studies with 335 cases: HR=1.45, 95% CI=1.12-1.87) in NSCLC. Function analysis demonstrated that SOX2 was involved in DNA repair, cell cycle, regulation of stem cell population maintenance, and Hippo signaling pathway. CONCLUSION SOX2 may be an independent prognostic factor in time-to-progression and recurrence-free survival and may become a promising therapeutic target. More studies are essential to further our findings.
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Affiliation(s)
- K Zang
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China
| | - Z-H Yu
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China.
| | - M Wang
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China
| | - Y Huang
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China
| | - X-X Zhu
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China
| | - B Yao
- Department of ICU, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an City, China
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19
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Yan Z, Yao B, Hall C, Gao Q, Zang W, Zhou H, He Q, Zhu H. Metal-Metal Oxide Catalytic Interface Formation and Structural Evolution: A Discovery of Strong Metal-Support Bonding, Ordered Intermetallics, and Single Atoms. Nano Lett 2022; 22:8122-8129. [PMID: 36194541 DOI: 10.1021/acs.nanolett.2c02568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In-depth investigation of metal-metal oxide interactions and their corresponding evolution is of paramount importance to heterogeneous catalysis as it allows the understanding and maneuvering of the structure of catalytic motifs. Herein, using a series of core/shell metal/iron oxide (M/FeOx, M = Pd, Pt, Au) nanoparticles and through a combination of in situ and ex situ electron and X-ray investigations, we revealed anomalous and dissimilar M-FeOx interactions among different systems under reducing conditions. Pd interacts strongly with FeOx after high-temperature reductive treatment, featured by the formation of Pd single atoms in the FeOx matrix and increased Pd-Fe bonding, while Pt transforms into ordered PtFe intermetallics and Pt single atoms immediately upon the coating of FeOx. In contrast, Au does not manifest strong bonding with FeOx. As a proof of concept of tailoring metal-metal oxide interactions for catalysis, optimized Pd/FeOx demonstrates 100% conversion and 86.5% selectivity at 60 °C for acetylene semihydrogenation.
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Affiliation(s)
- Zihao Yan
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Bingqing Yao
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Connor Hall
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Qiang Gao
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Wenjie Zang
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Hua Zhou
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Qian He
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Huiyuan Zhu
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
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20
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Zhu DZ, Yao B, Yan ZQ, Huang S, Fu X. [Research advances on the construction of an ideal scar model in vitro based on innovative tissue engineering technology]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:983-988. [PMID: 36299213 DOI: 10.3760/cma.j.cn501120-20210723-00257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The scar brings a huge economic burden and creates a serious psychological shadow for patients. Although the current methods for scar treatment tend to be diversified, the treatment method that can truly achieve the goal of "perfect healing" or "scarless healing" after human skin injury is quite scarce. With the wide application of tissue engineering technologies in medicine research, technologies such as three-dimensional bioprinting, organoid culture, and organ chip technologies are constantly emerging. Disease models in vitro based on these innovative technologies showed more advantages than traditional animal disease models. The article introduces the current hotspot technologies in skin tissue engineering such as organoid culture, three-dimensional bioprinting, and organ chip technologies, focuses on summarizing the three key elements to be mastered for constructing an ideal scar model in vitro, and puts forward the future prospect of constructing an ideal scar model in vitro based on our research team's long-term experience in skin tissue repair and regeneration research.
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Affiliation(s)
- D Z Zhu
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - B Yao
- Institute of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Z Q Yan
- Unit 69213 of PLA, Kashgar 844900, China
| | - S Huang
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - Xiaobing Fu
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
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21
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Yao B, Dong T, Fu A, Li H, Jiang C, Li N, Cai S. Quantification and characterization of mouse and human tissue-resident microbiota by qPCR and 16S sequencing. STAR Protoc 2022; 3:101765. [PMID: 36209427 PMCID: PMC9558047 DOI: 10.1016/j.xpro.2022.101765] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/12/2022] [Accepted: 09/19/2022] [Indexed: 11/06/2022] Open
Abstract
The tissue-resident microbiota is an integral component of multiple tumor types, but it remains challenging to characterize its abundance and composition due to its low biomass. Here, we describe an optimized protocol for quantification and profiling of tissue-resident microbiota. The major optimized steps include DNA extraction, qPCR, 16S library construction, and bioinformatics analysis. This protocol enables robust and accurate characterization of the dynamics of normal and tumor tissue-resident microbiota at its physiological abundance from both mouse and human origins. For complete details on the use and execution of this protocol, please refer to Fu et al. (2022).
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Affiliation(s)
- Bingqing Yao
- Fudan University, Shanghai 200000, China,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China,School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China,Corresponding author
| | - Tingting Dong
- Fudan University, Shanghai 200000, China,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China,School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China
| | - Aikun Fu
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China,School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China
| | - Hang Li
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang 310024, China
| | - Chuhan Jiang
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China,School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China
| | - Nan Li
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang 310024, China
| | - Shang Cai
- Fudan University, Shanghai 200000, China,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China,Corresponding author
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22
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Yao B, Wen X, Li P. Next Flight Prediction for PKX's Frequent Flyers. INT J ARTIF INTELL T 2022. [DOI: 10.1142/s0218213022500488] [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: 11/18/2022]
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23
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Liang LT, Song W, Zhang C, Li Z, Yao B, Zhang MD, Yuan XY, Jirigala E, Fu XB, Huang S, Zhu P. [Effects of in situ cross-linked graphene oxide-containing gelatin methacrylate anhydride hydrogel on wound vascularization of full-thickness skin defect in mice]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:616-628. [PMID: 35899412 DOI: 10.3760/cma.j.cn501225-20220314-00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To prepare graphene oxide (GO)-containing gelatin methacrylate anhydride (GelMA) hydrogel and to investigate the effects of in situ photopolymerized GO-GelMA composite hydrogel in wound vascularization of full-thickness skin defect in mice. Methods: The experimental study method was used. The 50 μL of 0.2 mg/mL GO solution was evenly applied onto the conductive gel, and the structure and size of GO were observed under field emission scanning electron microscope after drying. Human skin fibroblasts (HSFs) were divided into 0 μg/mL GO (without GO solution, the same as below) group, 0.1 μg/mL GO group, 1.0 μg/mL GO group, 5.0 μg/mL GO group, and 10.0 μg/mL GO group treated with GO of the corresponding final mass concentration, and the absorbance value was detected using a microplate analyzer after 48 h of culture to reflect the proliferation activity of cells (n=6). HSFs and human umbilical vein vascular endothelial cells (HUVECs) were divided into 0 μg/mL GO group, 0.1 μg/mL GO group, 1.0 μg/mL GO group, and 5.0 μg/mL GO group treated with GO of the corresponding final mass concentration, and the migration rates of HSFs at 24 and 36 h after scratching (n=5) and HUVECs at 12 h after scratching (n=3) were detected by scratch test, and the level of vascular endothelial growth factor (VEGF) secreted by HSFs after 4, 6, and 8 h of culture was detected by enzyme-linked immunosorbent assay method (n=3). The prepared GO-GelMA composite hydrogels containing GO of the corresponding final mass concentration were set as 0 μg/mL GO composite hydrogel group, 0.1 μg/mL GO composite hydrogel group, 1.0 μg/mL GO composite hydrogel group, and 5.0 μg/mL GO composite hydrogel group to observe their properties before and after cross-linking, and to detect the release of GO after soaking with phosphate buffer solution for 3 and 7 d (n=3). The full-thickness skin defect wounds were made on the back of 16 6-week-old female C57BL/6 mice. The mice treated with in situ cross-linked GO-GelMA composite hydrogel containing GO of the corresponding final mass concentration were divided into 0 μg/mL GO composite hydrogel group, 0.1 μg/mL GO composite hydrogel group, 1.0 μg/mL GO composite hydrogel group, and 5.0 μg/mL GO composite hydrogel group according to the random number table, with 4 mice in each group. The general condition of wound was observed and the wound healing rate was calculated on 3, 7, and 14 d of treatment, the wound blood perfusion was detected by laser Doppler flowmetry on 3, 7, and 14 d of treatment and the mean perfusion unit (MPU) ratio was calculated, and the wound vascularization on 7 d of treatment was observed after hematoxylin-eosin staining and the vascular density was calculated (n=3). The wound tissue of mice in 0 μg/mL GO composite hydrogel group and 0.1 μg/mL GO composite hydrogel group on 7 d of treatment was collected to observe the relationship between the distribution of GO and neovascularization by hematoxylin-eosin staining (n=3) and the expression of VEGF by immunohistochemical staining. Data were statistically analyzed with analysis of variance for repeated measurement, one-way analysis of variance, and Tukey's method. Results: GO had a multilayered lamellar structure with the width of about 20 μm and the length of about 50 μm. The absorbance value of HSFs in 10.0 μg/mL GO group was significantly lower than that in 0 μg/mL GO group after 48 h of culture (q=7.64, P<0.01). At 24 h after scratching, the migration rates of HSFs were similar in the four groups (P>0.05); at 36 h after scratching, the migration rate of HSFs in 0.1 μg/mL GO group was significantly higher than that in 0 μg/mL GO group, 1.0 μg/mL GO group, and 5.0 μg/mL GO group (with q values of 7.48, 10.81, and 10.20, respectively, P<0.01). At 12 h after scratching, the migration rate of HUVECs in 0.1 μg/mL GO group was significantly higher than that in 0 μg/mL GO group, 1.0 μg/mL GO group, and 5.0 μg/mL GO group (with q values of 7.11, 8.99, and 14.92, respectively, P<0.01), and the migration rate of HUVECs in 5.0 μg/mL GO group was significantly lower than that in 0 μg/mL GO group and 1.0 μg/mL GO group (with q values of 7.81 and 5.33, respectively, P<0.05 or P<0.01 ). At 4 and 6 h of culture, the VEGF expressions of HSFs in the four groups were similar (P>0.05); at 8 h of culture, the VEGF expression of HSFs in 0.1 μg/mL GO group was significantly higher than that in 0 μg/mL GO group and 5.0 μg/mL GO group (with q values of 4.75 and 4.48, respectively, P<0.05). The GO-GelMA composite hydrogels in the four groups were all red liquid before cross-linking, which turned to light yellow gel after cross-linking, with no significant difference in fluidity. The GO in the GO-GelMA composite hydrogel of 0 μg/mL GO composite hydrogel group had no release of GO at all time points; the GO in the GO-GelMA composite hydrogels of the other 3 groups was partially released on 3 d of soaking, and all the GO was released on 7 d of soaking. From 3 to 14 d of treatment, the wounds of mice in the 4 groups were covered with hydrogel dressings, kept moist, and gradually healed. On 3, 7, and 14 d of treatment, the wound healing rates of mice in the four groups were similar (P>0.05). On 3 d of treatment, the MPU ratio of wound of mice in 0.1 μg/mL GO composite hydrogel group was significantly higher than that in 0 μg/mL GO composite hydrogel group, 1.0 μg/mL GO composite hydrogel group, and 5.0 μg/mL GO composite hydrogel group (with q values of 10.70, 11.83, and 10.65, respectively, P<0.05 or P<0.01). On 7 and 14 d of treatment, the MPU ratios of wound of mice in the four groups were similar (P>0.05). The MPU ratio of wound of mice in 0.1 μg/mL GO composite hydrogel group on 7 d of treatment was significantly lower than that on 3 d of treatment (q=14.38, P<0.05), and that on 14 d of treatment was significantly lower than that on 7 d of treatment (q=27.78, P<0.01). On 7 d of treatment, the neovascular density of wound of mice on 7 d of treatment was 120.7±4.1 per 200 times of visual field, which was significantly higher than 61.7±1.3, 77.7±10.2, and 99.0±7.9 per 200 times of visual field in 0 μg/mL GO composite hydrogel group, 1.0 μg/mL GO composite hydrogel group, and 5.0 μg/mL GO composite hydrogel group (with q values of 12.88, 7.79, and 6.70, respectively, P<0.01), and the neovascular density of wound of mice in 1.0 μg/mL GO composite hydrogel group and 5.0 μg/mL GO composite hydrogel group was significantly higher than that in 0 μg/mL GO composite hydrogel group (with q values of 5.10 and 6.19, respectively, P<0.05). On 7 d of treatment, cluster of new blood vessels in wound of mice in 0.1 μg/mL GO composite hydrogel group was significantly more than that in 0 μg/mL GO composite hydrogel group, and the new blood vessels were clustered near the GO; a large amount of VEGF was expressed in wound of mice in 0.1 μg/mL GO composite hydrogel group in the distribution area of GO and new blood vessels. Conclusions: GO with mass concentration lower than 10.0 μg/mL had no adverse effect on proliferation activity of HSFs, and GO of 0.1 μg/mL can promote the migration of HSFs and HUVECs, and can promote the secretion of VEGF in HSFs. In situ photopolymerized of GO-GelMA composite hydrogel dressing can promote the wound neovascularization of full-thickness skin defect in mice and increase wound blood perfusion in the early stage, with GO showing an enrichment effect on angiogenesis, and the mechanism may be related to the role of GO in promoting the secretion of VEGF by wound cells.
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Affiliation(s)
- L T Liang
- School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - W Song
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - C Zhang
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - Z Li
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - B Yao
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - M D Zhang
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - X Y Yuan
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - Enhe Jirigala
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - X B Fu
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - S Huang
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - Ping Zhu
- Guangdong Cardiovascular Institute, Department of Cardiac Surgery of Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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24
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Liu L, Zhou C, Zhao T, Yao B, Zhou J, Shu X, Chen S, Shi S, Xi S, Lan D, Lin W, Xie Q, Ren L, Luo Z, Sun C, Yang P, Guo EJ, Dong Z, Manchon A, Chen J. Current-induced self-switching of perpendicular magnetization in CoPt single layer. Nat Commun 2022; 13:3539. [PMID: 35725723 PMCID: PMC9209536 DOI: 10.1038/s41467-022-31167-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 06/07/2022] [Indexed: 11/30/2022] Open
Abstract
All-electric switching of perpendicular magnetization is a prerequisite for the integration of fast, high-density, and low-power magnetic memories and magnetic logic devices into electric circuits. To date, the field-free spin-orbit torque (SOT) switching of perpendicular magnetization has been observed in SOT bilayer and trilayer systems through various asymmetric designs, which mainly aim to break the mirror symmetry. Here, we report that the perpendicular magnetization of CoxPt100-x single layers within a special composition range (20 < x < 56) can be deterministically switched by electrical current in the absence of external magnetic field. Specifically, the Co30Pt70 shows the largest out-of-plane effective field efficiency and best switching performance. We demonstrate that this unique property arises from the cooperation of two structural mechanisms: the low crystal symmetry property at the Co platelet/Pt interfaces and the composition gradient along the thickness direction. Compared with that in bilayers or trilayers, the field-free switching in CoxPt100-x single layer greatly simplifies the SOT structure and avoids additional asymmetric designs. One challenge for spin-based electronics is the controlled and reliable switching of magnetization without magnetic fields. Here, Liu et al investigate a variety of compositions of CoPt, and determine the specific composition to maximize switching performance, potentially simplifying device design.
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Affiliation(s)
- Liang Liu
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Chenghang Zhou
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Tieyang Zhao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Bingqing Yao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Jing Zhou
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Xinyu Shu
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Shaohai Chen
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Shu Shi
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Shibo Xi
- Singapore Synchrotron Light Source (SSLS), National University of Singapore, 5 Research Link, Singapore, 117603, Singapore.,Institute of Sustainability for Chemicals, Energy and Environment, A*STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore
| | - Da Lan
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Weinan Lin
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Qidong Xie
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Lizhu Ren
- Department of Electrical and Computing Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Zhaoyang Luo
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Chao Sun
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Ping Yang
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore.,Singapore Synchrotron Light Source (SSLS), National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - Er-Jia Guo
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhili Dong
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | | | - Jingsheng Chen
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore. .,Suzhou Research Institute, National University of Singapore, Suzhou, 215123, China. .,Chongqing Research Institute, National University of Singapore, Chongqing, 401120, China. .,Institute of Material Research and Engineering, A*STAR, Singapore, 138634, Singapore.
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25
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Fang J, Van Der Geest JSA, Yao B, Yang Q, Chirico N, Brans MA, Roefs MT, Vader P, De Jager SCA, De Bruin A, Vink A, Van Mil A, Schiffelers RM, Lei Z, Sluijter JPG. E2F7/8 is involved in cardiomyocyte polyploidy but does not affect myocardial reperfusion injury recovery. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.061] [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
Funding Acknowledgements
Type of funding sources: Other. Main funding source(s): CSC fellowship
Background
Polyploidy cells consist of more than two complete sets of homologous chromosomes. Although a characteristic feature of cardiomyocytes and observed in all mammalian species, its molecular mechanism and biological functions are still unknown. Cardiomyocytes polyploidy in rodents occurs mainly through incomplete cytokinesis and increases with age. Studies have demonstrated that E2F7/8 transcription factors are key regulators of polyploidy in the liver and pancreas, however, it remains unclear if E2F7/8 control the generation of polyploidy cardiomyocytes and what the functional consequence is post-myocardial infarction (MI).
Methods
By using a tamoxifen inducible Cre/LoxP approach in new-born mice, we deleted E2F7/8 transcription factors ubiquitously and evaluated the biological significance of postnatal E2F7/8 loss. Mice underwent myocardial ischemia reperfusion injury (IRI) and heart function was assessed by 4D-echocardiography. Cardiomyocyte nucleus polyploidy was measured by FACS and microscope.
Results
Deficiency of E2F7/8 significantly suppress cardiomyocyte mononucleated and multinucleated polyploidy, as well as dramatically decreased hepatocytes polyploidy. E2F7/8 defect also led to a decrease in cardiac stress related marker lever such as ANP, BNP, MMP2, β-MHC/α-MHC and an increase in CD31 expression level. Surprisingly, E2F7/8 deletion did not have impact on cardiac function and dimensions post-IRI.
Conclusion
In summary, we identified that E2F7/8 activity is involved in the cellular polyploidy in the heart but did not affect myocardial function after myocardial injury.
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Affiliation(s)
- J Fang
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - JSA Van Der Geest
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - B Yao
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - Q Yang
- University Medical Center Utrecht, CDL Research , Utrecht , Netherlands (The)
| | - N Chirico
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - MA Brans
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - MT Roefs
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - P Vader
- University Medical Center Utrecht, Experimental Cardiology and CDL Research , Utrecht , Netherlands (The)
| | - SCA De Jager
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - A De Bruin
- University of Groningen, Department of Pediatrics , Groningen , Netherlands (The)
| | - A Vink
- University Medical Center Utrecht, Department of Pathology , Utrecht , Netherlands (The)
| | - A Van Mil
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
| | - RM Schiffelers
- University Medical Center Utrecht, CDL Research , Utrecht , Netherlands (The)
| | - Z Lei
- University Medical Center Utrecht, Experimental Cardiology and CDL Research , Utrecht , Netherlands (The)
| | - JPG Sluijter
- University Medical Center Utrecht, Experimental Cardiology , Utrecht , Netherlands (The)
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Pinto AS, Yao B, Harris C, Hayward R, Keat A, Machado P. POS0152 DIRECT AND INDIRECT EFFECT OF TNF INHIBITORS ON SPINAL MOBILITY IN PEOPLE WITH AXIAL SPONDYLOARTHRITIS AND THE MEDIATOR ROLE OF DISEASE ACTIVITY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundAlthough it may be difficult to detect changes in spinal mobility on the short term, spinal mobility is considered an important measure to assess the efficacy of drugs used to treat axial spondyloarthritis (axSpA). However, few studies evaluated the long-term impact of biologic treatment on spinal mobility.ObjectivesTo describe the long-term effect of TNF inhibitors (TNFi) on spinal mobility in patients with axSpA, and to determine whether the use of TNFi treatment influences spinal mobility, and if this due to a direct or indirect effect (mediated by disease activity).MethodsWe performed a retrospective observational study, using data collected from patients with a clinical diagnosis of axSpA treated with TNFi at a tertiary care centre where disease activity and metrology assessments are routinely done. Adult patients with at least two Bath Ankylosing Spondylitis Metrology Index (BASMI) measurements were included. Disease activity was measured using the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and Ankylosing Spondylitis Disease Activity Score C-reactive protein (ASDAS). The longitudinal association between TNFi and improvement in BASDAI/ASDAS was tested using a linear mixed effects model with BASMI as dependent variable. To test whether TNFi had a direct effect on BASMI, not mediated by disease activity, we tested that TNFi treatment was not conditionally independent of BASMI given BASDAI/ASDAS (Figure 1). We tested whether the nodes TNFi and BASMI were disconnected if we removed BASDAI and ASDAS. To test this conditional independence, we first built a linear mixed effects model for BASMI given BASDAI or ASDAS when the patient was under TNFi and used this model to predict a 95% confidence interval (CI) for BASMI given the data for BASDAI/ASDAS when the patient was without TNFi. We checked whether the true value of BASMI lay within this 95% CI and performed a hypothesis test for binomial distribution where H0: p=0.95. To test for the indirect effect of TNFi on BASMI reduction, mediated through the disease activity, we regressed BASMI on BASDAI/ASDAS, TNFi (if there was a direct effect), demographics, presence of radiographic (r-) axSpA and HLA-B27 positivity, using a linear mixed effects model adjusted for within-patient correlation.Figure 1.Indirect effect of TNFi on BASMI (represented by the full line), through the influence of TNFi on disease activity, adjusted by other confounders and direct effect of TNFi on BASMI (dashed line), independently of disease activity.ResultsData from 188 patients and 1326 visits were analysed. Mean age was 45.6 (SD 11.6) years, mean disease duration was 15.8 (SD 9.64) years, 152 (80.9%) were male, 120 (73.6%) had r-axSpA, and 83 (74.8%) were HLA-B27 positive. Mean follow-up time was 8.0 (SD 4.4) years, ranging from 0.8 to 18.2 years. Treatment with TNFi was significantly associated with long-term improvement in BASMI (B=-0.423, 95% CI=[-0.553,-0.292], p<0.001). An indirect effect of TNFi on BASMI improvement was observed, mediated by reduction in disease activity, measured by BASDAI (B=0.146, 95% CI=[0.092, 0.200], p<0.001) or ASDAS (B=0.405, 95% CI=[0.260, 0.549], p<0.001). Using conditional independence tests, a direct effect of TNFi on BASMI improvement was also observed, independently of disease activity, when BASDAI was used (p<0.001) as a covariate, but not when ASDAS was used (p=0.3104). The direct effect of TNFi (B=-0.300, 95% CI=[-0.576,-0.025], p<0.001) on BASMI was estimated in the BASDAI-adjusted mixed effects model.ConclusionTNFi are effective at improving BASMI in patients with axSpA, in a real-life setting. This effect is mainly explained by the reduction in disease activity. However, a direct effect of TNFi on BASMI could also be demonstrated, when disease activity was measured by BASDAI, suggesting that ASDAS captures additional factors that can influence spinal mobility. These potential factors deserve further investigation, but they could for example include biomechanical properties of tendons and myofascial tissue.Disclosure of InterestsAna Sofia Pinto: None declared, Bohao Yao: None declared, Claire Harris: None declared, Rhys Hayward: None declared, Andrew Keat: None declared, Pedro Machado Speakers bureau: Received consulting/speaker’s fees from Abbvie, BMS, Celgene, Eli Lilly, Galapagos, Janssen, MSD, Novartis, Orphazyme, Pfizer, Roche and UCB, all unrelated to thismanuscript, Consultant of: Received consulting/speaker’s fees from Abbvie, BMS, Celgene, Eli Lilly, Galapagos, Janssen, MSD, Novartis, Orphazyme, Pfizer, Roche and UCB, all unrelated to thismanuscript
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Fu A, Yao B, Dong T, Chen Y, Yao J, Liu Y, Li H, Bai H, Liu X, Zhang Y, Wang C, Guo Y, Li N, Cai S. Tumor-resident intracellular microbiota promotes metastatic colonization in breast cancer. Cell 2022; 185:1356-1372.e26. [PMID: 35395179 DOI: 10.1016/j.cell.2022.02.027] [Citation(s) in RCA: 227] [Impact Index Per Article: 113.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/10/2022] [Accepted: 02/24/2022] [Indexed: 12/12/2022]
Abstract
Tumor-resident intracellular microbiota is an emerging tumor component that has been documented for a variety of cancer types with unclear biological functions. Here, we explored the functional significance of these intratumor bacteria, primarily using a murine spontaneous breast-tumor model MMTV-PyMT. We found that depletion of intratumor bacteria significantly reduced lung metastasis without affecting primary tumor growth. During metastatic colonization, intratumor bacteria carried by circulating tumor cells promoted host-cell survival by enhancing resistance to fluid shear stress by reorganizing actin cytoskeleton. We further showed that intratumor administration of selected bacteria strains isolated from tumor-resident microbiota promoted metastasis in two murine tumor models with significantly different levels of metastasis potential. Our findings suggest that tumor-resident microbiota, albeit at low biomass, play an important role in promoting cancer metastasis, intervention of which might therefore be worth exploring for advancing oncology care.
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Affiliation(s)
- Aikun Fu
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang Province, China
| | - Bingqing Yao
- School of Life Sciences, Fudan University, Shanghai, China; Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Tingting Dong
- School of Life Sciences, Fudan University, Shanghai, China; Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Yongyi Chen
- Department of Clinical Laboratory, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, 310000, China
| | - Jia Yao
- Department of Breast Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Yu Liu
- Department of Breast Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Hang Li
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang, China
| | - Huiru Bai
- School of Life Sciences, Fudan University, Shanghai, China; Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Xiaoqin Liu
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; School of Life Sciences, Fudan University, Shanghai, China
| | - Yue Zhang
- School of Life Sciences, Fudan University, Shanghai, China; Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Chunhui Wang
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Westlake Disease Modeling lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China
| | - Yajing Guo
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Nan Li
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang, China
| | - Shang Cai
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Westlake Disease Modeling lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang Province, China.
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Yao B, Wojnarowska Z, Paluch M. Effect of structure on molecular dynamics in glass-forming liquids. The case of aromaticity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117757] [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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Li Y, Liu Y, Yao B, Narasimalu S, Dong Z. Rapid preparation and antimicrobial activity of polyurea coatings with RE-Doped nano-ZnO. Microb Biotechnol 2021; 15:548-560. [PMID: 34676986 PMCID: PMC8867993 DOI: 10.1111/1751-7915.13891] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/22/2021] [Accepted: 07/02/2021] [Indexed: 12/04/2022] Open
Abstract
The recent COVID‐19 virus has led to a rising interest in antimicrobial and antiviral coatings for frequently touched surfaces in public and healthcare settings. Such coatings may have the ability to kill a variety of microorganisms and bio‐structures and reduce the risk of virus transmission. This paper proposes an extremely rapid method to introduce rare‐earth doping nano‐ZnO in polyamines for the preparation of the anti‐microbial polyurea coatings. The nano‐ZnO is prepared by wet chemical method, and the RE‐doped nano‐ZnO was obtained by mixing nano ZnO and RE‐dopants with an appropriate amount of nitric acid. This rapidly fabricated polyurea coating can effectively reduce bacteria from enriching on the surface. Comparing with pure nano‐ZnO group, all the polyurea coatings with four different rare‐earth elements (La, Ce, Pr and Gd) doped nano‐ZnO. The La‐doped nano‐ZnO formula group indicates the highest bactericidal rate over 85% to Escherichia coli (E. coli) and Pseudomonas aeruginosa (Pseudomonas). Followed by Ce/ZnO, the bactericidal rate may still remain as high as 83% at room temperature after 25‐min UV‐exposure. It is believed that the RE‐doping process may greatly improve the photocatalytic response to UV light as well as environmental temperature due to its thermal catalytic enhancement. Through the surface characterizations and bioassays, the coatings have a durably high bactericidal rate even after repeated usage. As polyurea coating itself has high mechanical strength and adhesive force with most substrate materials without peel‐off found, this rapid preparation method will also provide good prospects in practical applications.
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Affiliation(s)
- Yuanzhe Li
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Yang Liu
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore.,School of Mechanical Engineering & Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Xiangtan, 411105, China
| | - Bingqing Yao
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Srikanth Narasimalu
- Energy Research Institute @ NTU (ERI@N), CleanTech One, Singapore, 637141, Singapore
| | - ZhiLi Dong
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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Xue YF, Xue D, Yao B, Hu CG, Liu J. Correlation between microRNA-766 expression in patients with advanced gastric cancer and the efficacy of platinum-containing chemotherapy. Eur Rev Med Pharmacol Sci 2021; 24:8822-8829. [PMID: 32964970 DOI: 10.26355/eurrev_202009_22821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE We aimed at observing the correlation between microRNA-766 expression and the efficacy of platinum-containing chemotherapy in patients with stage IV gastric cancer (GCa). PATIENTS AND METHODS Tissue specimens were obtained from 100 patients with stage IV GCa who received platinum-based chemotherapy, and microRNA-766 expression in these samples was examined by quantitative real-time polymerase chain reaction (qPCR) analysis. Survival analysis was carried out through Kaplan-Meier test. The influencing factors of survival were assessed through COX univariate and multivariate regression. RESULTS GCa tissues contained significant lower expression of microRNA-766 than adjacent tissues. The degree of tumor differentiation and peritoneal metastasis were confirmed to have great relevance to microRNA-766 level. Patients with high microRNA-766 expression have better chemotherapy efficacy and longer progression-free survival. CONCLUSIONS Our study shows for the first time that the highly expressed microRNA-766 in tumor tissues of patients with stage Ⅳ GCa predicts better platinum-containing chemotherapy efficacy and prognosis.
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Affiliation(s)
- Y-F Xue
- Special Needs Ward, Shanxi Cancer Hospital, Taiyuan, China.
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Pang LR, Huang MX, Li H, Chen G, Zhong GP, Yao B, Chen J. LINC00707 accelerates the proliferation, migration and invasion of clear cell renal cell carcinoma. Eur Rev Med Pharmacol Sci 2021; 24:6616-6622. [PMID: 32633350 DOI: 10.26355/eurrev_202006_21647] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Long noncoding RNAs (lncRNAs) have been well concerned in tumor researches, which are believed to influence tumorigenesis and tumor progression. This study aims to uncover the role of LINC00707 in clear cell renal cell carcinoma (ccRCC) and the underlying mechanism. MATERIALS AND METHODS Differentially expressed lncRNAs in ccRCC tissues and renal epithelial tissues were analyzed in The Cancer Genome Atlas (TCGA), and LINC00707 was screened out. Expression level of LINC00707 in ccRCC cell lines was determined as well. Regulatory effects of LINC00707 on influencing proliferative, migratory, and invasive abilities of 786-O and 769-P cells were assessed. At last, relative levels of epithelial-mesenchymal transition (EMT)-related genes E-cadherin and N-cadherin in 786-O and 769-P cells were detected by quantitative real time-polymerase chain reaction (qRT-PCR) and Western blot. RESULTS LINC00707 was upregulated in ccRCC tissues and cell lines. Silence of LINC00707 attenuated proliferative, migratory, and invasive abilities of 786-O and 769-P cells. Moreover, knockdown of LINC00707 upregulated E-cadherin and downregulated N-cadherin in ccRCC cells at both mRNA and protein levels. CONCLUSIONS LINC00707 is upregulated in ccRCC, which could promote cancer cells to proliferate, migrate, and invade. LINC00707 accelerates the progression of ccRCC by activating EMT pathway.
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Affiliation(s)
- L-R Pang
- Department of Chemoradiotherapy Center, Yinzhou People's Hospital, Ningbo, China.
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Botwe BO, Akudjedu TN, Antwi WK, Rockson P, Mkoloma SS, Balogun EO, Elshami W, Bwambale J, Barare C, Mdletshe S, Yao B, Arkoh S. The integration of artificial intelligence in medical imaging practice: Perspectives of African radiographers. Radiography (Lond) 2021; 27:861-866. [PMID: 33622574 DOI: 10.1016/j.radi.2021.01.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/29/2021] [Accepted: 01/31/2021] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The current technological developments in medical imaging are centred largely on the increasing integration of artificial intelligence (AI) into all equipment modalities. This survey assessed the perspectives of African radiographers on the integration of AI in medical imaging in order to offer unique recommendations to support the training of the radiography workforce. METHODS An exploratory cross-sectional online survey of radiographers working within Africa was conducted from March to August 2020. The survey obtained data about their demographics and perspectives on AI implementation and usage. Data obtained were analysed using both descriptive and inferential statistics. RESULTS A total of 1020 valid responses were obtained. Majority of the respondents (n = 883,86.6%) were working in general X-ray departments. Of the respondents, 84.9% (n = 866) indicated that AI technology would improve radiography practice and quality assurance for efficient diagnosis and improved clinical care. Fear of job losses following the implementation of AI was a key concern of most radiographers (n = 625,61.3%). CONCLUSION Generally, radiographers were delighted about the integration of AI into medical imaging, however; there were concerns about job security and lack of knowledge. There is an urgent need for stakeholders in medical imaging infrastructure development and practices in Africa to start empowering radiographers through training programmes, funding, motivational support, and create clear roadmaps to guide the adoption and integration of AI in medical imaging in Africa. IMPLICATION FOR PRACTICE The current study offers unique suggestions and recommendations to support the training of the African radiography workforce and others in similar resource-limited settings to provide quality care using AI-integrated imaging modalities.
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Affiliation(s)
- B O Botwe
- Department of Radiography, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Box KB143, Korle Bu, Accra, Ghana.
| | - T N Akudjedu
- Institute of Medical Imaging & Visualisation, Department of Medical Science & Public Health, Faculty of Health & Social Sciences, Bournemouth University, Bournemouth, UK.
| | - W K Antwi
- Department of Radiography, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Box KB143, Korle Bu, Accra, Ghana.
| | - P Rockson
- Department of Medical Imaging, University of Health and Allied Sciences, Ho, Ghana.
| | | | - E O Balogun
- National Orthopaedic Hospital, Igbobi, Lagos, Nigeria.
| | - W Elshami
- Department of Medical Diagnostic Imaging, College of Health Sciences, University of Sharjah, United Arab Emirates.
| | - J Bwambale
- Society of Radiography of Uganda, Uganda.
| | - C Barare
- Kenyatta National Hospital, Kenya.
| | - S Mdletshe
- University of Auckland, Faculty of Medical and Health Sciences, Department of Anatomy and Medical Imaging, Auckland, New Zealand.
| | - B Yao
- National Institute for Health Technologists' Training (INFAS) Côte d'Ivoire, Department of Medical Imaging and Radiotherapy, Côte d'Ivoire.
| | - S Arkoh
- Department of Radiography, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Box KB143, Korle Bu, Accra, Ghana.
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Wylie GR, Yao B, Genova HM, Chen MH, DeLuca J. Using functional connectivity changes associated with cognitive fatigue to delineate a fatigue network. Sci Rep 2020; 10:21927. [PMID: 33318529 PMCID: PMC7736266 DOI: 10.1038/s41598-020-78768-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 11/24/2020] [Indexed: 12/22/2022] Open
Abstract
Cognitive fatigue, or fatigue related to mental work, is a common experience. A growing body of work using functional neuroimaging has identified several regions that appear to be related to cognitive fatigue and that potentially comprise a "fatigue network". These include the striatum of the basal ganglia, the dorsolateral prefrontal cortex (DLPFC), the dorsal anterior cingulate cortex (dACC), the ventro-medial prefrontal cortex (vmPFC) and the anterior insula. However, no work has been conducted to assess whether the connectivity between these regions changes as a function of cognitive fatigue. We used a task-based functional neuroimaging paradigm to induce fatigue in 39 healthy individuals, regressed the signal associated with the task out of the data, and investigated how the functional connectivity between these regions changed as cognitive fatigue increased. We observed functional connectivity between these regions and other frontal regions largely decreased as cognitive fatigue increased while connectivity between these seeds and more posterior regions increased. Furthermore the striatum, the DLPFC, the insula and the vmPFC appeared to be central 'nodes' or hubs of the fatigue network. These findings represent the first demonstration that the functional connectivity between these areas changes as a function of cognitive fatigue.
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Affiliation(s)
- G R Wylie
- Kessler Foundation, Rocco Ortenzio Neuroimaging Center, 1199 Pleasant Valley Way, West Orange, NJ, 07052, USA.
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA.
- The Department of Veterans' Affairs, The War Related Illness and Injury Center, New Jersey Healthcare System, East Orange Campus, East Orange, NJ, 07018, USA.
| | - B Yao
- Kessler Foundation, Rocco Ortenzio Neuroimaging Center, 1199 Pleasant Valley Way, West Orange, NJ, 07052, USA
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA
| | - H M Genova
- Kessler Foundation, Rocco Ortenzio Neuroimaging Center, 1199 Pleasant Valley Way, West Orange, NJ, 07052, USA
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA
| | - M H Chen
- Kessler Foundation, Rocco Ortenzio Neuroimaging Center, 1199 Pleasant Valley Way, West Orange, NJ, 07052, USA
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA
| | - J DeLuca
- Kessler Foundation, Rocco Ortenzio Neuroimaging Center, 1199 Pleasant Valley Way, West Orange, NJ, 07052, USA
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA
- Department of Neurology, Rutgers University, New Jersey Medical School, Newark, NJ, 07101, USA
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Zhang YJ, Li JJ, Yao B, Song W, Huang S, Fu XB. [Influence of the stiffness of three-dimensionally bioprinted extracellular matrix analogue on the differentiation of bone mesenchymal stem cells into skin appendage cells]. Zhonghua Shao Shang Za Zhi 2020; 36:1013-1023. [PMID: 33238684 DOI: 10.3760/cma.j.cn501120-20200811-00375] [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 observe the influence of the stiffness of three-dimensionally bioprinted extracellular matrix analogue on the differentiation of bone marrow mesenchymal stem cells (BMSCs) into skin appendage cells. Methods: (1) Sodium alginate of 1 g and 4 g gelatin, 3 g sodium alginate and 8 g gelatin were mixed respectively, and the two mixtures were dissolved in 100 mL ultra-pure water respectively to prepare two sodium alginate-gelatin composite hydrogels, named 1A4G hydrogel and 3A8G hydrogel, which were used in the subsequent experiments. The morphology of the two hydrogels at room temperature, after condensation for 15-30 min at 4 ℃ (the same condensation condition below), after condensation and cross-linking with 25 g/L calcium chloride solution (the same cross-linking condition below), and after condensation and three-dimensional printing with a three-dimensional bioprinter (the same three-dimensional printer below) and cross-linking were observed respectively. Young's modulus (stiffness) of the two kinds of hydrogels was measured by Young's modulus tester after condensation and cross-linking (n=3). Two kinds of hydrogels were cross-linked and freeze-dried, and their pore structure was observed by scanning electron microscope. Two hydrogels were cross-linked and freeze-dried, and the porosity was detected by anhydrous ethanol replacement method (n=3). (2) BMSCs were isolated from femur and tibia of 20 C57BL/6 mice (no limitation with sex, born 7 days) and cultured, and the second passage of cells was used for further test. The BMSCs single cell suspension (1.0×10(7) /mL) was mixed with 1A4G hydrogel and 3A8G hydrogel respectively at 1∶9 volume ratio to prepare BMSCs-loaded 1A4G hydrogel and BMSCs-loaded 3A8G hydrogel for three-dimensional printing. One construct was printed with 1 mL cell-loaded hydrogel (the same dosage for printing below). Mesenchymal stem cells (MSCs) specific medium was added after cross-linking, and the printed constructs were divided into 1A4G group and 3A8G group according to the hydrogel. One construct of each group cultured for 7 days was tested with live/dead kit to count the live cells and dead cells in 50-fold field of view. Nine printed constructs from each of the two groups were taken, and BMSCs of nine wells (1.0×10(6) per well) cultured with 2 mL MSCs specific medium were set as two-dimensional culture group. After 1, 3, 5 day (s) of culture, three printed constructs from 1A4G group and 3A8G group respectively and three wells of cells from two-dimensional culture group were taken to detect the absorbance value in culture medium by cell counting kit 8, denoting the cell proliferation activity. (3) BMSCs-loaded 1A4G hydrogel and BMSCs-loaded 3A8G hydrogel of 10 mL respectively were prepared as in experiment (2), which were respectively mixed with 0.5 mL plantar dermis homogenate extracted from 10 C57BL/6 mice of 1 day postnatal with unknown sex, then three-dimensionally printed, cross-linked, cultured with MSCs specific medium for 3 days and then changed to sweat gland specific medium. The printed constructs were divided into 1A4G group and 3A8G group according to their hydrogel. After 7 days of culture with sweat gland specific medium, the expressions of epithelial cell surface markers cytokeratin-5 (CK5) and CK14, sweat gland cell surface markers CK18 and Na(+) /K(+) -ATPase (NKA), and hair follicle cell surface markers CK17 and alkaline phosphatase (ALP) at protein level in cells of printed constructs in the two groups were detected by immunofluorescence method. The expressions of CK5, CK14, CK18, NKA (detecting ATP1a1), CK17, and ALP at mRNA level in cells of printed constructs in the two groups were detected with real-time fluorescent quantitative reverse transcription polymerase chain reaction (n=3). Data were statistically analyzed with independent sample t test, Fisher's exact probability test, analysis of variance for factorial design, and Bonferroni method. Results: (1) Compared with that of 3A8G hydrogel, 1A4G hydrogel had lower viscosity and better fluidity at room temperature. Both kinds of hydrogels were gel-like after condensation, based on which, the shape of cross-linked hydrogels was uniform and regular, with three-dimensional printing and cross-linking made hrdrogels forming solid crisscross cylindrical constructs. The Young's modulus of 1A4G hydrogel was (52±6) kPa, which was obviously lower than (218±5) kPa of 3A8G hydrogel (t=40.470, P<0.01). The pore structure of the two hydrogels was similar, with all the cross-sections showing porous network structure. The porosity of the two hydrogels was similar (t=0.930, P>0.05). (2) The distribution of live/dead cells between 1A4G group and 3A8G group was similar after 7 days of culture (P>0.05), most of which were live cells. The absorbance value in culture medium of printed constructs among 1A4G group, 3A8G group, and two-dimensional culture group didn't show statistically significant differences after 1, 3, 5 day (s) of culture (P>0.05). Compared with that after 1 day of culture within each group, the absorbance value in culture medium of printed constructs in 1A4G group and 3A8G group was significantly increased after 3 and 5 days of culture (P<0.05 or P<0.01), and the absorbance value in culture medium of cells in two-dimensional culture group was significantly increased after 5 days of culture (P<0.01). Compared with that after 3 days of culture within each group, the absorbance value in culture medium of printed constructs in 1A4G group and 3A8G group and that of cells in two-dimensional culture group was significantly increased after 5 days of culture (P<0.01). (3) After 7 days of culture with sweat gland specific medium, the CK5, CK14, CK18, NKA, CK17, and ALP were positively expressed at protein level in cells of printed constructs in the two groups. After 7 days of culture with sweat gland specific medium, the expressions of CK5, CK14, CK18, and NKA at mRNA level in cells of printed constructs were close between the two groups (t=0.362, 0.807, 0.223, 1.356, P>0.05); the expressions of CK17 and ALP at mRNA level in cells of printed constructs in 3A8G group were 1.96±0.21 and 55.57±11.49, respectively, which were significantly higher than 1.05±0.42 and 2.01±0.27 in 1A4G group (t=3.333, 8.074, P<0.05 or P<0.01). Conclusions: BMSCs cultured three-dimensionally in 1A4G and 3A8G hydrogels tend to differentiate into sweat gland cells, but the BMSCs cultured three-dimensionally in 3A8G hydrogel show a stronger tendency to differentiate into hair follicle cells than the cells cultured in 1A4G hydrogel. It suggests that relatively high stiffness of three-dimensionally bioprinted extracellular matrix analogue facilitates not only differentiation of BMSCs into sweat gland cells, but also their differentiation into hair follicle cells.
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Affiliation(s)
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- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China (Enhejirigala is currently studying for doctorate in Tianjin Medical University 300070)
| | - Y J Zhang
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - J J Li
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - B Yao
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - W Song
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - S Huang
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
| | - X B Fu
- Research Center for Wound Repair and Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100048, China
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Short E, Heckman P, Yao B, McLaughlin P, Narayana V. Improved Rectal Dose Distribution for External Beam Treatment of Prostate Cancers Using Hybrid Plans. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wei LC, Zhang YJ, Huang S, Yao B, Li X, Chen XY, Li Y, Fu XB, Wu X. [Preparation and preliminary research on the characteristics of modified nano-bioglass hydrogel]. Zhonghua Shao Shang Za Zhi 2020; 36:930-938. [PMID: 33105945 DOI: 10.3760/cma.j.cn501120-20190806-00337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the preparation and preliminary research on the characteristics of modified nano-bioglass hydrogel. Methods: (1) The nano-bioglass suspension was prepared by adding 67 mL nano-silica suspension into 400 mL saturated calcium hydroxide solution, and its suspension stability was observed. (2) The hydrogel with final mass fraction of 10% gelatin and 1% sodium alginate was prepared and set as control group. On the basis of the hydrogel in control group, the nano-bioglass suspension prepared in experiment (1) was added to prepare the hydrogel with the final mass fraction of 0.5% bioglass, 10% gelatin, and 1% sodium alginate, and the hydrogel was set as the experimental group. The gelling time at 4 and 25 ℃and the dissolution time at 37 ℃ of hydrogel in 2 groups were recorded, and the gelation at 4 and 25 ℃and dissolution condition at 37 ℃of the hydrogel in 2 groups were observed. The hydrogel in 2 groups were collected and cross-linked with 25 g/L calcium chloride solution after cold bath at 4 ℃, and the compression modulus was measured by Young's modulus tester. In addition, the hydrogel in 2 groups were collected and cross-linked as before, and freeze-drying hydrogel was made at -20 ℃. The relative volumes were measured and the porosity of hydrogel in 2 groups was calculated. The number of sample in the experiment was 3. (3) Fibroblasts (Fbs) were isolated and cultured from 12 C57BL/6J mice of 24 hours old and the morphology was observed by inverted microscope, and the third passage of Fbs were cultured for the following experiment. Fbs were collected to make single cell suspension with the cell concentration of 1×10(5)/mL. The single cell suspension was divided into experimental group and control group according the random number table (the same grouping method below), which were added with hydrogel in experimental group and control group prepared in experiment (2), respectively. At culture hour 12, 24, and 48, cells of 3 wells in each group were collected to detect the survival rate by cell counting kit 8 method. (4) The third passage Fbs were collected to prepare the single cell suspension with the cell concentration of (3.0~4.5)×10(7)/mL, which was divided into experimental group and control group, with 1 tube in each group. The single cell suspension in 2 groups were added with green fluorescent probe DIO for staining and then added with 9 mL hydrogel in experimental group and control group prepared in experiment (2), respectively. The mixed solution of Fbs and hydrogel in 2 groups was cross-linked as before to make cell-loaded hydrogel. On culture day 3, the survival of cells in the hydrogel was observed by laser confocal microscope. The cell-loaded hydrogel was prepared as before and without added with green fluorescent probe DIO. On culture day 7, the adhesion and extension of cells in the hydrogel were observed by scanning electron microscope. (5) Twelve 6-week-old female BALB/c-nu nude mice were collected and divided into experimental group and control group, with 6 mice in each group. A round full-thickness skin defect wound with diameter of 1 cm was made on the back of each mouse. Immediately after injury, one cell-loaded hydrogel block in the experimental group and the control group prepared in experiment (4) was placed in the wound of each mouse in the experimental group and the control group, respectively. On post injury day (PID) 7 and 14, 3 nude mice in each group were sacrificed to collect the wound and wound margin tissue, which was stained with hematoxylin-eosin to observe the wound healing. Data were statistically analyzed with independent sample t test. Results: (1) The nano-bioglass particles could be uniformly dispersed in water and had good suspension stability. (2) The hydrogels of the 2 groups were molten at 37 ℃, and no precipitation of particle was observed. The dissolving time of the hydrogel in the experimental group and the control group at 37 ℃ was 5 and 10 min, respectively. The gelation time of the hydrogel in the experimental group and the control group at 25 ℃ was 30 and 180 min, respectively, and the gelation time of the 2 groups at 4 ℃ was 5 and 10 min, respectively. The compression modulus of hydrogel in the experimental group was (53±6) kPa, which was significantly higher than (23±6) kPa in the control group (t=6.364, P<0.01). The porosity of the hydrogel in the experimental group was (86.1±2.1)%, which was similar to (88.2±4.4)% in the control group (t=1.210, P>0.05). (3) The cells were in long fusiform, and the proportion of nuclei was high, which was accorded with the morphological characteristics of Fbs. At culture hour 12, 24, and 48, the survival rate of cells in the experimental group was (84±4)%, (89±4)%, and (130±10)%, which was similar to (89±5)%, (90±4)%, and (130±11)% in the control group, respectively (t=1. 534, 0.611, 0.148, P>0.05). (4) On culture day 3, the cells in the two groups had complete morphology in the hydrogel, no nuclear lysis or disappearance were observed, the cytoplasm remained intact, and the fluorescence intensity of the cells in the experimental group was significantly stronger than that in the control group. On culture day 7, the cells in the experimental group and the control group adhered and stretched in the hydrogel, and the number of cells in the experimental group adhered to the hydrogel was significantly more than that in the control group. On PID 7, the wound area of the nude mice in the control group and the experimental group were reduced, the reduction area of mice in the experimental group was more obvious, and a large amount of inflammatory cells were seen in and around the wound in the 2 groups. On PID 14, the wound area of the nude mice in the control group was larger than that of the experimental group, and the number of inflammatory cells in and around the wound was significantly more than that in the experimental group. Conclusions: Nano-bioglass hydrogel possesses good physical, chemical, and biological properties, cell loading potential, and the ability to promote wound healing, which means it has a good potential in clinical application.
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Affiliation(s)
- L C Wei
- Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - Y J Zhang
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing 100039, China
| | - S Huang
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing 100039, China
| | - B Yao
- Key Laboratory of Tissue Repair and Regeneration of PLA, Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Fourth Medical Center, General Hospital of PLA, Beijing 100048, China
| | - X Li
- Department of Emergency, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - X Y Chen
- Department of Comprehensive Medical Treatment Ward, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - Y Li
- Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - X B Fu
- Key Laboratory of Tissue Repair and Regeneration of PLA, Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Fourth Medical Center, General Hospital of PLA, Beijing 100048, China
| | - X Wu
- Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
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Yao B, Kuznetsov VL, Xiao T, Jie X, Gonzalez-Cortes S, Dilworth JR, Al-Megren HA, Alshihri SM, Edwards PP. Fuels, power and chemical periodicity. Philos Trans A Math Phys Eng Sci 2020; 378:20190308. [PMID: 32811361 PMCID: PMC7435144 DOI: 10.1098/rsta.2019.0308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
The insatiable-and ever-growing-demand of both the developed and the developing countries for power continues to be met largely by the carbonaceous fuels comprising coal, and the hydrocarbons natural gas and liquid petroleum. We review the properties of the chemical elements, overlaid with trends in the periodic table, which can help explain the historical-and present-dominance of hydrocarbons as fuels for power generation. However, the continued use of hydrocarbons as fuel/power sources to meet our economic and social needs is now recognized as a major driver of dangerous global environmental changes, including climate change, acid deposition, urban smog and the release of many toxic materials. This has resulted in an unprecedented interest in and focus on alternative, renewable or sustainable energy sources. A major area of interest to emerge is in hydrogen energy as a sustainable vector for our future energy needs. In that vision, the issue of hydrogen storage is now a key challenge in support of hydrogen-fuelled transportation using fuel cells. The chemistry of hydrogen is itself beautifully diverse through a variety of different types of chemical interactions and bonds forming compounds with most other elements in the periodic table. In terms of their hydrogen storage and production properties, we outline various relationships among hydride compounds and materials of the chemical elements to provide some qualitative and quantitative insights. These encompass thermodynamic and polarizing strength properties to provide such background information. We provide an overview of the fundamental nature of hydrides particularly in relation to the key operating parameters of hydrogen gravimetric storage density and the desorption/operating temperature at which the requisite amount of hydrogen is released for use in the fuel cell. While we await the global transition to a completely renewable and sustainable future, it is also necessary to seek CO2 mitigation technologies applied to the use of fossil fuels. We review recent advances in the strategy of using hydrocarbon fossil fuels themselves as compounds for the high capacity storage and production of hydrogen without any CO2 emissions. Based on these advances, the world may end up with a hydrogen economy completely different from the one it had expected to develop; remarkably, with 'Green hydrogen' being derived directly from the hydrogen-stripping of fossil fuels. This article is part of the theme issue 'Mendeleev and the periodic table'.
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Affiliation(s)
- B. Yao
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - V. L. Kuznetsov
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - T. Xiao
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - X. Jie
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - S. Gonzalez-Cortes
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - J. R. Dilworth
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - H. A. Al-Megren
- Materials Division, King Abdulaziz City for Science and Technology, Riyadh 11442, Kingdom of Saudi Arabia
| | - S. M. Alshihri
- Materials Division, King Abdulaziz City for Science and Technology, Riyadh 11442, Kingdom of Saudi Arabia
| | - P. P. Edwards
- KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
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Qiu J, Wang D, Qu H, Yao B, Ma B, Ye L, Zhong W, Wang Q, Xie W. 657P Mutation landscape of genes involved in DNA-damage repair pathway among Chinese patients with prostate cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Abstract
Background The outbreak of Corona Virus Disease-2019 (COVID-19) has posed unprecedented pressure and threats to healthcare workers in Wuhan and the entire country. Aims To assess the effect of the COVID-19 outbreak on the sleep quality of healthcare workers in a children’s healthcare centre in Wuhan. Methods A cross-sectional, anonymized, self-reported questionnaire survey was conducted at the Children’s Healthcare Centre of Renmin Hospital, Wuhan University, Wuhan, China. The questionnaire consisted of three parts, including socio-demographic characteristics and COVID-19 epidemic-related factors, the Pittsburgh sleep quality index (PSQI), and Zung’s self-rating anxiety scale (SAS) and self-rating depression scale (SDS). Results In total, 47 out of 123 (38%) participants with PSQI scores > 7 were identified as having sleep disturbance. A logistic regression analysis showed that sleep disturbance was independently associated with being an only child (adjusted odds ratio (OR) and 95% confidence interval (CI) 3.40 (1.21–9.57), P < 0.05), exposure to COVID-19 patients (adjusted OR and 95% CI 2.97 (1.08–8.18), P < 0.05) and depression (adjusted OR and 95% CI 2.83 (1.10–7.27), P < 0.05). Conclusions We observed that, during the outbreak of COVID-19, sleep disturbance was highly prevalent among paediatric healthcare workers, and sleep disturbance was independently associated with being an only child, exposure to COVID-19 patients and depression. Therefore, more mental health services are required for front-line paediatric healthcare workers in Wuhan.
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Affiliation(s)
- S Wang
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - L Xie
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Y Xu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - S Yu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - B Yao
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - D Xiang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Zhou J, Nie H, Liu P, Wang Z, Yao B, Yang L. Down-regulation of miR-339 promotes differentiation of BMSCs and alleviates osteoporosis by targeting DLX5. Eur Rev Med Pharmacol Sci 2020; 23:29-36. [PMID: 30657543 DOI: 10.26355/eurrev_201901_16744] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE It was the aim of this study to investigate whether miR-339 may affect osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) by targeting DLX5, thereby alleviating osteoporosis. MATERIALS AND METHODS BMSCs were isolated from the bone marrow of mice. The expression levels of miR-339 and DLX5 during the process of osteogenesis was detected by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Meanwhile, the expression of downstream osteogenesis-associated proteins, such as runt-related transcription factor 2 (RUNX2) and osteopontin (OPN), were also detected after overexpression or inhibition of miR-339. The alkaline phosphatase (ALP) activity was measured in cells by ALP activity assay kit. Alizarin red staining was performed to reveal the cell mineralization ability. The luciferase reporter gene assay was used to identify the targeted pairings of miR-339 and DLX5 genes. In addition, the expression of DLX5 was detected by Western blot analysis after overexpression or knockdown of miR-339. Rescue test was applied to evaluate whether miR-339 could affect the differentiation of BMSCs by inhibiting the expression of DLX5. RESULTS QRT-PCR showed that miR-339 expression gradually decreased while the expression of DLX5 increased during the induction culture of BMSCs. After overexpression of miR-339 in BMSCs, the expression levels of ALP, RUNX2, and OPN were reduced. Besides, ALP activity assay showed a decreased cell ALP activity. RUNX2 protein expression was also decreased. In addition, Alizarin red staining detected a significant increase in cell mineralization, whereas silencing miR-339 resulted in an opposite result. These results indicated that miR-339 could regulate the osteogenic differentiation of BMSCs. Subsequently, we predicted using bioinformatics software that miR-339 might target DLX5, and validated this hypothesis by luciferase reporter assay. Finally, Western blot and ALP activity assay revealed that DLX5 could reverse the inhibitory effect of overexpression of miR-339 on osteogenic differentiation of BMSCs. CONCLUSIONS Down-regulation of miR-339 can promote osteogenic differentiation of BMSCs by targeting DLX5, thereby relieving osteoporosis.
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Affiliation(s)
- J Zhou
- Department of Orthopedic, East Campus of Sichuan Provincial People's Hospital, Chengdu, China.
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Jie B, Yao B, Li R, An J, Zhang Y, He Y. Post-traumatic maxillofacial reconstruction with vascularized flaps and digital techniques: 10-year experience. Int J Oral Maxillofac Surg 2020; 49:1408-1415. [PMID: 32404244 DOI: 10.1016/j.ijom.2020.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/22/2020] [Accepted: 04/21/2020] [Indexed: 12/24/2022]
Abstract
The aim of this study was to present a treatment protocol for the individual repair of post-traumatic maxillofacial bone defects with vascularized flaps assisted by digital techniques. This study reviewed 20 patients with post-traumatic maxillofacial bone defects who underwent reconstruction with composite vascularized bone flaps assisted by digital techniques between April 2009 and July 2019. Preoperative computed tomography (CT) data were imported into ProPlan CMF software to complete virtual fracture reduction and reconstruction. Surgical navigation, three-dimensionally (3D) printed surgical plates, and prefabricated titanium mesh/plates were used to guide the actual surgery. All patients underwent open reduction and internal fixation and reconstruction surgery in one stage. CT data obtained at 1 week postoperative were imported into Geomagic Control software to evaluate the accuracy of the virtual surgical plan. The mean follow-up interval was 24 months (range 6-96 months). Donor and recipient site morbidity and second-stage procedures to rehabilitate the dentition and cosmetic organs were recorded. The flap success rate was 100%. Nine patients had deep circumflex iliac artery flaps and eleven patients had fibula flaps. The accuracy of computer-assisted surgery was 4.4±0.8mm. There were no postoperative complications. This study is novel in presenting a treatment protocol for individual computer-assisted reconstruction for post-traumatic maxillofacial bone defects with vascularized flaps.
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Affiliation(s)
- B Jie
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - B Yao
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - R Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - J An
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y He
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.
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Zheng XY, Luo SH, Wei XY, Ling P, Ai HY, Liu ZY, Lin QY, Lü J, Yao B, Yan JH, Weng JP, Yang DZ. [Related factors for microalbuminuria in adult type 1 diabetes patients of short disease duration]. Zhonghua Yi Xue Za Zhi 2020; 100:419-423. [PMID: 32146763 DOI: 10.3760/cma.j.issn.0376-2491.2020.06.005] [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 investigate related factors for microalbuminuria in adult type 1 diabetes (T1D) patients of short disease duration (less than 5 years), and provide evidence for prevention of early diabetic kidney disease in this population. Methods: All adult patients enrolled in the Guangdong T1D translational medicine study between 2011 and 2017 with a disease duration of less than 5 years were included in this analysis. At enrollment, patients' demographic and clinical data were documented, and blood and urine samples were collected for the measurements of blood lipids, glycated hemoglobin A1c and urine albuminuria. Insulin resistance was evaluated by estimated glucose disposal rate (eGDR). Patients were categorized into groups based on urine albumin creatitine ratio (UACR): normoalbuminuric group (UACR<30 mg/g) and microalbuminuric group (UACR≥30 mg/g). Stepwise multivariate linear regression analysis was used to analyze risk factors for microalbuminuria in adult T1D patients of short disease duration. Results: A total of 384 patients were included in this analysis, and 51.3% (197/384) of which was female. The onset age of patients was (24.6±12.5) years, with a disease duration of 2.1(0.6, 3.5) years, body mass index of (19.8±3.2) kg/m(2), waist hip ratio of 0.85±0.21, and glycated hemoglobin A1c of (9.8±3.3)% at enrollment. Microalbuminuria occurred in 62 patients (16.1%). Multivariate linear analysis showed that higher glycated hemoglobin A1c, higher systolic blood pressure and more severe insulin resistance were related factors for microalbuminuria (t=2.322, 2.868 and -2.373, respectively, all P<0.05). Conclusions: Microalbuminuria was not rare in adult T1D patients of short disease duration. Inadequate glycemic control and insulin resistance were independent related factors for microalbuminuria in this population.
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Affiliation(s)
- X Y Zheng
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - S H Luo
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - X Y Wei
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - P Ling
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - H Y Ai
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Z Y Liu
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Q Y Lin
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J Lü
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - B Yao
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J H Yan
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J P Weng
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - D Z Yang
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
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Zhao W, Wang P, He W, Tao T, Li H, Li Y, Jiang W, Sun J, Ge X, Chen X, Zheng Y, Wei L, Chen C, Wang Y, Li C, Chen H, Yao B, Tang W, Zhu M. MYPT1 Down-regulation by Lipopolysaccharide-SIAH1/2 E3 Ligase-Ubiquitin-Proteasomal Degradation Contributes to Colonic Obstruction of Hirschsprung Disease. Cell Mol Gastroenterol Hepatol 2019; 9:345-347.e6. [PMID: 31759145 PMCID: PMC6997446 DOI: 10.1016/j.jcmgh.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/13/2022]
Key Words
- anova, analysis of variance
- cir, circular
- d, dilated
- haec, hirschsprung-associated enterocolitis
- hd, hirschsprung disease
- long, longitudinal
- lps, lipopolysaccharide
- n, narrow
- rlc, regulatory light chain
- snp, sodium nitroprusside
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Affiliation(s)
- W Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China; Reproductive Medical Center, Jinling Hospital Affiliated Medical School of Nanjing University, Nanjing, China
| | - P Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - W He
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Soochow University, Suzhou, China
| | - T Tao
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - H Li
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Y Li
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - W Jiang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - J Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - X Ge
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated Medical College of Zhejiang University, Hangzhou, China
| | - X Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - Y Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - L Wei
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - C Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - Y Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - C Li
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China
| | - H Chen
- College of Life Science, Nanjing Normal University, Nanjing, China
| | - B Yao
- Reproductive Medical Center, Jinling Hospital Affiliated Medical School of Nanjing University, Nanjing, China.
| | - W Tang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China.
| | - M Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study and the Medical School of Nanjing University, Nanjing, China.
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Zheng XY, Yang DZ, Ai HY, Qiu LL, Ling P, Wu ZK, Wei XY, Lin QY, Lü J, Yan JH, Yao B, Weng JP, Luo SH. [Awareness of preconceptional care and its related factors in women of child-bearing age with type 1 diabetes]. Zhonghua Yi Xue Za Zhi 2019; 99:2654-2659. [PMID: 31505714 DOI: 10.3760/cma.j.issn.0376-2491.2019.34.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 investigate the awareness of preconception care among women of child-bearing age with type 1 diabetes (T1DM) and their self-management status, in order to provide evidence for establishment of management pathway for women with T1DM in pregnancy in China. Methods: This cross-sectional survey recruited female participants of child-bearing age from the cohort of Guangdong Type 1 Diabetes Translational Medicine Study conducted between June 2011 and December 2017. The participants were asked to fill out a questionnaire on the awareness of preconception care, their frequency of self-monitoring of blood glucose (SMBG) and other related variables. Chi-squared test or chi-squared test for trend was used in comparisons of categorical variables, and logistic regression analysis was performed to assess associated factors. Results: Totally, 441 women of child-bearing age with T1DM were investigated. The results show that their awareness of preconception care was poor (15.42%, 68/441). Higher educational level (χ(2trend)=3.990, P=0.046), experience of post-diabetes education evaluation (P<0.001), and better coverage of different modules in diabetes education (survival skills: χ(2)=7.525, P=0.004; basic knowledge: χ(2)=8.598, P=0.002; advanced knowledge: P<0.001) were associated with better awareness of preconception care. The average frequency of SMBG in these participants was 0.29 (0.14, 2.00) times per day, and only 8.5% (37/435) of them reached the frequency (≥4 times per day) recommended by guidelines. Moreover, 21.1% (92/435) of them hardly ever performed SMBG. Conclusion: Child-bearing age women with T1DM in Gunangdong had poor awareness of preconception care, with a much lower SMBG frequency than recommendation.
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Affiliation(s)
- X Y Zheng
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - D Z Yang
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - H Y Ai
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - L L Qiu
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - P Ling
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Z K Wu
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - X Y Wei
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Q Y Lin
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J Lü
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J H Yan
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - B Yao
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J P Weng
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - S H Luo
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
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Gao Y, Nan X, Shi X, Mu X, Liu B, Zhu H, Yao B, Liu X, Yang T, Hu Y, Liu S. SREBP1 promotes the invasion of colorectal cancer accompanied upregulation of MMP7 expression and NF-κB pathway activation. BMC Cancer 2019; 19:685. [PMID: 31299935 PMCID: PMC6626379 DOI: 10.1186/s12885-019-5904-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 07/02/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Sterol-regulatory element binding protein 1 (SREBP1), an intracellular cholesterol sensor located in the endoplasmic reticulum, regulates the intracellular cholesterol by the Insig-Srebp-Scap pathway. Over-expression of SREBP1 can cause dyslipidemia. SREBP1 can regulate the metabolic pathway, and then promote the proliferation of tumor cells. However, there is no relevant research of metastasis and invasion in the field of colorectal cancer (CRC). METHODS Expression of SREBP1 was manipulated in CRC cell lines with low and high level SREBP1 expression by transfectiong with plasmids containing the SREBP1 gene, or by shRNA. The effect of SREBP1 on cell migration was assayed. The expression of SREBP1, p65 and MMP7 were detected by western blot. Human umbilical vein endothelial cell was used for detection of angiogenesis by adding the culture supernatant from HT29 and SW620. The level of reactive oxygen species (ROS) was detected by Dihydroethidium (DHE) staining. NF-κB inhibitor SN50 was used to test the relationship of SREBP1, NF-κB pathway and MMP7. RESULTS We found that the expression of SREBP1 in colon adenocarcinoma was significantly higher than that in noncancerous tissues, especially in the invasive tumor front including tumor budding. In vitro, SREBP1 over-expressed in colon cancer cell lines HT29 promoted angiogenesis in endothelial cells, increased ROS levels, phosphorylation of NF-κB-p65 and increases MMP7 expression. The effect of SREBP1 on expression of MMP7 was lost following treatment with the NF-κB inhibitor SN50. CONCLUSION Our results suggest that SREBP1 can promote the invasion and metastasis of CRC cells by means of promoting the expression of MMP7 related to phosphorylation of p65.
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Affiliation(s)
- Yuyan Gao
- The Department of Radiotherapy, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
- The Department of Radiotherapy, Cancer Hospital, Harbin Medical University, Harbin, China.
- The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, Heilongjiang, China.
| | - Xianxiu Nan
- The Department of Radiotherapy, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xinjue Shi
- The Department of Radiotherapy, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaoqin Mu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China.
| | - Binbin Liu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Huifen Zhu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Bingqing Yao
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Xinyi Liu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Tianyue Yang
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Yiting Hu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
| | - Shulin Liu
- Systemomics Center, College of Pharmacy, and Genomics Research Center, Harbin Medical University, Harbin, China
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Liu HX, Li GM, Zhou YW, Luo SH, Zheng XY, Yang DZ, Liang H, Yan JH, Yao B, Weng JP. [Clinical characteristics and classification diagnosis of newly diagnosed diabetes onset with ketosis or ketoacidosis in adult patients]. Zhonghua Yi Xue Za Zhi 2019; 99:1369-1374. [PMID: 31137122 DOI: 10.3760/cma.j.issn.0376-2491.2019.18.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To describe the clinical characteristics and classification diagnosis of newly diagnosed diabetes onset with ketosis or ketoacidosis in adult patients. Methods: Medical records of newly diagnosed diabetes onset with ketosis or ketoacidosis in the Third Affiliated Hospital of Sun Yat-sen University between January 2011 and August 2016 were reviewed. Patients aged 18 years or older were included, while other diseases that may cause urinary ketoacidosis and special types of diabetes were excluded. Patients were classified as type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM) or diabetes mellitus untyped based on discharged diagnosis, and groups were compared for differences in clinical profiles. Then the patient's medication, final diagnosis and outcome within 2 years of discharge were tracked through the inpatient and the outpatient medical record systems. Receiver operating characteristics (ROC) curves were analyzed to check the ability of clinical indicators such as onset age, body mass index (BMI) and C-peptide to discriminate T1DM from T2DM, and to find the best diagnostic cut-off points. Results: A total of 123 patients (88 males) were enrolled [with a mean age of (41.1±13.6) years old], with 37 patients (30.1%) diagnosed as T1DM, 60 patients (48.8%) diagnosed as T2DM and 26 patients (21.1%) diagnosed as Untyped. There was a statistically significant difference in onset age, BMI, blood pressure, blood gas pH and bicarbonate, blood lipids, fasting, 0.5 h and 2 h C-peptide level, any diabetic antibody and anti-glutamic acid decarboxylase antibody (GADA) positive rate, combined fatty liver ratio and family history among the three groups (all P<0.05). ROC curve analysis was performed on patients diagnosed with T1DM (n=36) and T2DM (n=87) after 2 years follow-up, and the area under the curve (AUC) of onset age, BMI, fasting C-peptide, 0.5 h and 2 h C-peptide was 0.735, 0.813, 0.855, 0.898, and 0.882, respectively. Conclusion: The ROC curve analysis indicates that C-peptide, onset age and BMI can provide effective diagnostic value, and the diagnostic value of C peptide is better than BMI and onset age.
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Affiliation(s)
- H X Liu
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - G M Li
- Department of Endocrinology, Qujing First People's Hospital, Qujing 655000, Yunnan, China
| | - Y W Zhou
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - S H Luo
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - X Y Zheng
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - D Z Yang
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - H Liang
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J H Yan
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - B Yao
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J P Weng
- Department of Endocrinology and Metabolic Disease, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
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Wang Y, Gu Z, Ren Y, Wang Z, Yao B, Dong Z, Adamo G, Zeng H, Sun H. Perovskite-Ion Beam Interactions: Toward Controllable Light Emission and Lasing. ACS Appl Mater Interfaces 2019; 11:15756-15763. [PMID: 30969116 DOI: 10.1021/acsami.9b01592] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Achieving controllable coherent and incoherent light sources is crucial to meet the requests of the constantly developing integrated optics, which, however, remains challenging for the existing semiconductor materials and techniques. All-inorganic lead halide perovskites (ILHPs) are emerging as the promising semiconductors, featuring the defect-tolerant nature and tunable band gap. Herein, an experimental design, based on the interaction between ILHPs and energetic ions, for achieving controllable light emitters and microlasers is reported. We reveal that the photoluminescence intensity from ILHPs can be modulated by more than 1 order of magnitude upon low-dose gallium ion (∼1015 ions/cm2) irradiation, which can be attributed to the generation of vacancy/interstitial defects, metallic lead, and crystal-to-amorphization transition. Such ion-dependent light emission can be exploited to make the colorful photopatterns and in situ tailor the lasing behavior from CsPbBr3 microplates. Further, a strong sputtering effect is observed with the increase of the ion dose (∼1017 ions/cm2), which enables the top-down fabrication of microlasers based on ILHPs. These findings represent a significant step toward controllable light sources leveraging on perovskite-ion interactions.
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Affiliation(s)
- Yue Wang
- MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | | | - Yinjuan Ren
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Ziming Wang
- MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Bingqing Yao
- School of Materials Science and Engineering , Nanyang Technological University , Nanyang Avenue , Singapore 639798 , Singapore
| | - Zhili Dong
- School of Materials Science and Engineering , Nanyang Technological University , Nanyang Avenue , Singapore 639798 , Singapore
| | | | - Haibo Zeng
- MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Handong Sun
- MajuLab, International Joint Research Unit UMI 3654, CNRS, Université Côte d'Azur, Sorbonne Université, National University of Singapore, Nanyang Technological University , Singapore 637371 , Singapore
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Delaloge S, Cella D, Ye Y, Buyse M, Chan A, Barrios CH, Holmes FA, Mansi J, Iwata H, Ejlertsen B, Moy B, Chia SKL, Gnant M, Smichkoska S, Ciceniene A, Martinez N, Filipović S, Ben-Baruch NE, Joy AA, Langkjer ST, Senecal F, de Boer RH, Moran S, Yao B, Bryce R, Auerbach A, Fallowfield L, Martin M. Effects of neratinib on health-related quality of life in women with HER2-positive early-stage breast cancer: longitudinal analyses from the randomized phase III ExteNET trial. Ann Oncol 2019; 30:567-574. [PMID: 30689703 DOI: 10.1093/annonc/mdz016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND We report longitudinal health-related quality-of-life (HRQoL) data from the international, randomized, double-blind, placebo-controlled phase III ExteNET study, which demonstrated an invasive disease-free survival benefit of extended adjuvant therapy with neratinib over placebo in human epidermal growth factor receptor-2-positive early-stage breast cancer. PATIENTS AND METHODS Women (N = 2840) with early-stage HER2-positive breast cancer who had completed trastuzumab-based adjuvant therapy were randomly assigned to neratinib 240 mg/day or placebo for 12 months. HRQoL was an exploratory end point. Patients completed the Functional Assessment of Cancer Therapy-Breast (FACT-B) and EuroQol 5-Dimensions (EQ-5D) questionnaires at baseline and months 1, 3, 6, 9, and 12. Changes from baseline were compared using analysis of covariance with no imputation for missing values. Sensitivity analyses used alternative methods. Changes in HRQoL scores were regarded as clinically meaningful if they exceeded previously reported important differences (IDs). RESULTS Of the 2840 patients (intention-to-treat population), 2407 patients were evaluable for FACT-B (neratinib, N = 1171; placebo, N = 1236) and 2427 patients for EQ-5D (neratinib, N = 1186; placebo, N = 1241). Questionnaire completion rates exceeded 85%. Neratinib was associated with a decrease in global HRQoL scores at month 1 compared with placebo (adjusted mean differences: FACT-B total, -2.9 points; EQ-5D index, -0.02), after which between-group differences diminished at later time-points. Except for the FACT-B physical well-being (PWB) subscale at month 1; all between-group differences were less than reported IDs. The FACT-B breast cancer-specific subscale showed small improvements with neratinib at months 3-9, but all were less than IDs. Sensitivity analyses exploring missing data did not change the results. CONCLUSIONS Extended adjuvant neratinib was associated with a transient, reversible decrease in HRQoL during the first month of treatment, possibly linked to treatment-related diarrhea. With the exception of the PWB subscale at month 1, all neratinib-related HRQoL changes did not reach clinically meaningful thresholds. ClinicalTrials.gov: NCT00878709.
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Affiliation(s)
- S Delaloge
- Department of Medicine, Institut Gustave Roussy, Villejuif, France.
| | - D Cella
- Department of Medical Social Sciences, Feinberg School of Medicine at Northwestern University, Chicago
| | - Y Ye
- Puma Biotechnology Inc, Los Angeles, USA
| | - M Buyse
- International Drug Development Institute (IDDI), Louvain-la-Neuve, Belgium
| | - A Chan
- Breast Cancer Research Centre-WA & Curtin University, Perth, Australia
| | - C H Barrios
- Oncology Research Unit, Pontifical Catholic University of Rio Grande do Sul School of Medicine, Porto Alegre, Brazil
| | | | - J Mansi
- Department of Medical Oncology, Guy's and St Thomas' NHS Foundation Trust and Biomedical Research Centre, King's College London, London, UK
| | - H Iwata
- Department of Breast Oncology, Aichi Cancer Center, Chikusa-ku, Nagoya, Japan
| | - B Ejlertsen
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - B Moy
- Department of Hematology/Oncology, Massachusetts General Hospital Cancer Center, Boston, USA
| | - S K L Chia
- Medical Oncology, British Columbia Cancer Agency, Vancouver, Canada
| | - M Gnant
- Department of Surgery and Comprehensive Cancer Centre, Medical University of Vienna, Vienna, Austria
| | - S Smichkoska
- University Clinic for Radiotherapy and Oncology, Ss Cyril and Methodius University of Skopje, Skopje, Republic of Macedonia
| | - A Ciceniene
- Oncology Institute of Vilnius University, Vilnius, Lithuania
| | - N Martinez
- Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - S Filipović
- Clinic of Oncology, Clinical Center Niš, Nis, Serbia
| | - N E Ben-Baruch
- Department of Oncology, Kaplan Medical Center, Rehovot, Israel
| | - A A Joy
- Cross Cancer Institute, Edmonton, Canada
| | - S T Langkjer
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - F Senecal
- Northwest Medical Specialties PLLC, Tacoma, USA
| | - R H de Boer
- Department of Medical Oncology, Royal Melbourne Hospital, Melbourne, Australia
| | - S Moran
- Puma Biotechnology Inc, Los Angeles, USA
| | - B Yao
- Puma Biotechnology Inc, Los Angeles, USA
| | - R Bryce
- Puma Biotechnology Inc, Los Angeles, USA
| | - A Auerbach
- Puma Biotechnology Inc, Los Angeles, USA
| | - L Fallowfield
- Sussex Health Outcomes Research & Education in Cancer (SHORE-C), Brighton and Sussex Medical School, University of Sussex, Brighton, UK
| | - M Martin
- Medical Oncology, Instituto de Investigación Sanitaria Gregorio Marañón, CIBERONC, GEICAM, Universidad Complutense, Madrid, Spain
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Ling P, Zhang Y, Luo SH, Zheng XY, Qiu LL, Yang DZ, Ai HY, Lü J, Yuan FY, Zhang XW, Xu W, Liang H, Yan JH, Yao B, Weng JP. [Glycemic control and its associated factors in children and adolescents with type 1 diabetes mellitus]. Zhonghua Yi Xue Za Zhi 2019; 98:3762-3766. [PMID: 30541218 DOI: 10.3760/cma.j.issn.0376-2491.2018.46.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A higher frequency of SMBG is one of the key factors to achieve sufficient glycemic control among children and adolescents with T1DM treated with CSII.
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Affiliation(s)
- P Ling
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Key Laboratory of Prevention and Cure of Diabetes, Guangzhou 510630, China
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Doan Q, Lalla D, Yao B, Danese M, Barnett B, Crown J. Modeling the long-term efficacy of neratinib in the extended adjuvant setting for women with HER2+/HR+ early stage breast cancer (ESBC). Breast 2019. [DOI: 10.1016/s0960-9776(19)30114-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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