101
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Liu SY, Xu Y, Yang H, Liu L, Zhao M, Yin W, Xu YT, Huang Y, Tan C, Dai Z, Zhang H, Zhang JP, Chen XM. Ultrathin 2D Copper(I) 1,2,4-Triazolate Coordination Polymer Nanosheets for Efficient and Selective Gene Silencing and Photodynamic Therapy. Adv Mater 2021; 33:e2100849. [PMID: 33797149 DOI: 10.1002/adma.202100849] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/22/2021] [Indexed: 06/12/2023]
Abstract
Gene silencing holds promise for cancer therapeutics because of its potential to inhibit genes involved in tumor development. However, gene silencing is still restricted by its limited efficacy and safety. Nanoscale coordination polymers (CPs) emerge as promising nanocarriers for gene delivery, but their responsiveness and potential therapeutic properties have rarely been explored simultaneously. Here, multifunctional ultrathin 2D nanosheets of Cu(I) 1,2,4-triazolate CP with a thickness of 4.5 ± 0.8 nm are synthesized using a bottom-up method. These CP nanosheets can act as both an effective DNAzyme nanocarrier for gene therapy and an intrinsic photosensitizer for hypoxia-tolerant type I photodynamic therapy (PDT), which is ascribed to the Fenton-like reaction. Because of the glutathione (GSH)-responsiveness of the CP nanosheets, DNAzyme-loaded CP nanosheets exhibit excellent cancer-cell-targeting gene silencing of the early growth response factor-1 (EGR-1), with messenger RNA inhibited by 84% in MCF-7 (human breast cancer cells) and only 6% in MCF-10A (normal human mammary epithelial cells). After tail intravenous injection into MCF-7-tumor-bearing mice, the CP nanosheets loaded with chlorin-e6-modified DNAzyme under photoirradiation show a high antitumor efficacy (88.0% tumor regression), demonstrating a promising therapeutic platform with efficient and selective gene silencing and PDT of cancer.
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Affiliation(s)
- Si-Yang Liu
- School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yuzhi Xu
- Scientific Research Center, Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Huihui Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Liping Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Meiting Zhao
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Wen Yin
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yan-Tong Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Ying Huang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Chaoliang Tan
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Zong Dai
- School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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102
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Shen Y, Fabbris G, Miao H, Cao Y, Meyers D, Mazzone DG, Assefa TA, Chen XM, Kisslinger K, Prabhakaran D, Boothroyd AT, Tranquada JM, Hu W, Barbour AM, Wilkins SB, Mazzoli C, Robinson IK, Dean MPM. Charge Condensation and Lattice Coupling Drives Stripe Formation in Nickelates. Phys Rev Lett 2021; 126:177601. [PMID: 33988428 DOI: 10.1103/physrevlett.126.177601] [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] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Revealing the predominant driving force behind symmetry breaking in correlated materials is sometimes a formidable task due to the intertwined nature of different degrees of freedom. This is the case for La_{2-x}Sr_{x}NiO_{4+δ}, in which coupled incommensurate charge and spin stripes form at low temperatures. Here, we use resonant x-ray photon correlation spectroscopy to study the temporal stability and domain memory of the charge and spin stripes in La_{2-x}Sr_{x}NiO_{4+δ}. Although spin stripes are more spatially correlated, charge stripes maintain a better temporal stability against temperature change. More intriguingly, charge order shows robust domain memory with thermal cycling up to 250 K, far above the ordering temperature. These results demonstrate the pinning of charge stripes to the lattice and that charge condensation is the predominant factor in the formation of stripe orders in nickelates.
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Affiliation(s)
- Y Shen
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Fabbris
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - H Miao
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Material Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - Y Cao
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - D Meyers
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, USA
| | - D G Mazzone
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - T A Assefa
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - X M Chen
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Kisslinger
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Prabhakaran
- Department of Physics, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - A T Boothroyd
- Department of Physics, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - J M Tranquada
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Hu
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A M Barbour
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S B Wilkins
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Mazzoli
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I K Robinson
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M P M Dean
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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103
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Lin Y, Hu HC, Cheng J, Chen RY, Wang SS, Chen XM. [The current progress in mesenchymal stem cells-based therapy for atherosclerosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:288-292. [PMID: 33706466 DOI: 10.3760/cma.j.cn112148-20210129-00106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Lin
- Department of Cardiology, Ningbo No. 1 Hospital, Ningbo 315010, China
| | - H C Hu
- School of Medicine, Ningbo University, Ningbo 315211, China
| | - J Cheng
- School of Medicine, Ningbo University, Ningbo 315211, China
| | - R Y Chen
- School of Medicine, Ningbo University, Ningbo 315211, China
| | - S S Wang
- Department of Cardiology, Ningbo No. 1 Hospital, Ningbo 315010, China
| | - X M Chen
- Department of Cardiology, Ningbo No. 1 Hospital, Ningbo 315010, China
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104
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Zhao ZH, Du KJ, Wang T, Wang JY, Cao ZP, Chen XM, Song H, Zheng G, Shen XF. Maternal Lead Exposure Impairs Offspring Learning and Memory via Decreased GLUT4 Membrane Translocation. Front Cell Dev Biol 2021; 9:648261. [PMID: 33718391 PMCID: PMC7947239 DOI: 10.3389/fcell.2021.648261] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/08/2021] [Indexed: 11/13/2022] Open
Abstract
Lead (Pb) can cause a significant neurotoxicity in both adults and children, leading to the impairment to brain function. Pb exposure plays a key role in the impairment of learning and memory through synaptic neurotoxicity, resulting in the cognitive function. Researches have demonstrated that Pb exposure plays an important role in the etiology and pathogenesis of neurodegenerative diseases, such as Alzheimer's disease. However, the underlying mechanisms remain unclear. In the current study, a gestational Pb exposure (GLE) rat model was established to investigate the underlying mechanisms of Pb-induced cognitive impairment. We demonstrated that low-level gestational Pb exposure impaired spatial learning and memory as well as hippocampal synaptic plasticity at postnatal day 30 (PND 30) when the blood concentration of Pb had already recovered to normal levels. Pb exposure induced a decrease in hippocampal glucose metabolism by reducing glucose transporter 4 (GLUT4) levels in the cell membrane through the phosphatidylinositol 3 kinase-protein kinase B (PI3K-Akt) pathway. In vivo and in vitro GLUT4 over-expression increased the membrane translocation of GLUT4 and glucose uptake, and reversed the Pb-induced impairment to synaptic plasticity and cognition. These findings indicate that Pb exposure impairs synaptic plasticity by reducing the level of GLUT4 in the cell membrane as well as glucose uptake via the PI3K-Akt signaling pathway, demonstrating a novel mechanism for Pb exposure-induced neurotoxicity.
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Affiliation(s)
- Zai-Hua Zhao
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Ke-Jun Du
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Tao Wang
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Ji-Ye Wang
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Zi-Peng Cao
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Xiao-Ming Chen
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Han Song
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.,Department of Health Service, Chinese PLA General Hospital, Beijing, China
| | - Gang Zheng
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Xue-Feng Shen
- Department of Occupational and Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
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105
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Wang ZD, Feng Y, Sun L, Gan J, Li X, Ding WF, Chen XM. Anti-androgenetic alopecia effect of policosanol from Chinese wax by regulating abnormal hormone levels to suppress premature hair follicle entry into the regression phase. Biomed Pharmacother 2021; 136:111241. [PMID: 33485069 DOI: 10.1016/j.biopha.2021.111241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/27/2020] [Accepted: 12/31/2020] [Indexed: 12/15/2022] Open
Abstract
Previously, we have demonstrated that policosanol from Chinese wax suppressed testosterone(T)-induced alopecia in mice. However, the underlying mechanism remained to be determined. Herein, we investigated the mechanism of policosanol against androgenetic alopecia (AGA). AGA was induced in Kunming mice by subcutaneous administration of testosterone propionate for 60 d. Policosanol (0.5 %, 1% or 2%) was applied topically on the back of mice. Finasteride (2%) was applied topically as a positive control. The serum T and estradiol (E2) concentrations were determined by ELISA after 28 and 60 days of treatment. The cutaneous expression or activity of key mediators of hair growth, such as alkaline phosphatase (ALP), vascular endothelial growth factor (VEGF), and epidermal growth factor (EGF), was measured. MTS assay was performed to evaluate cell proliferation in cultured human dermal papilla cells (DPCs) treated with dihydrotestosterone (DHT). Western blotting was performed to evaluate the protein expression of Bax, Bcl2, TGF-β2, caspase-9, and caspase-3. We found lower T and T/E2 ratio in mice treated with policosanol than in the model group. Policosanol suppressed premature hair follicle entry into the regression phase, as shown by improving VEGF and EGF expression and ALP activity. The MTS assay showed that policosanol markedly inhibited the apoptosis of DHT-treated DPCs. Western blotting showed that policosanol significantly reduced the protein expression of TGF-β2, cleaved caspese-9, cleaved caspase-3, and Bax, and increased that of Bcl2. The optimal effect was obtained with 12.50 g/mL policosanol. In conclusion, policosanol prevents androgenetic alopecia by regulating hormone levels and suppressing premature hair follicle entry into the regression phase.
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Affiliation(s)
- Zhan-di Wang
- School of Chemistry, Biology and Environment of Yuxi Normal University, Yuxi, 653100, Yunnan, China
| | - Ying Feng
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China
| | - Long Sun
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China
| | - Jin Gan
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China
| | - Xian Li
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China
| | - Wei-Feng Ding
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China
| | - Xiao-Ming Chen
- Research Institute of Resource Insects of Chinese Academy of Forestry, Kunming, 650233, Yunnan, China.
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106
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Meng QR, Xu WJ, Hu WH, Ye H, Chen XX, Yuan W, Zhang WX, Chen XM. An unprecedented hexagonal double perovskite organic-inorganic hybrid ferroelastic material: (piperidinium) 2[KBiCl 6]. Chem Commun (Camb) 2021; 57:6292-6295. [PMID: 34075967 DOI: 10.1039/d1cc02085d] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An unprecedented A2MIMIIIX6-type double perovskite adopting a fully hexagonal BaNiO3-type structure, (piperidinium)2[KBiCl6], undergoes a 2/mF1[combining macron] ferroelastic phase transition at 285 K with a spontaneous strain of 0.0615, arising from the order-disorder transition of organic cations together with the synchronous displacement of inorganic chains.
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Affiliation(s)
- Qian-Ru Meng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Wei-Jian Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China. and Department of Chemistry & CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
| | - Wang-Hua Hu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hui Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiao-Xian Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Wei Yuan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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107
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Liu DX, Xie KP, Zhang WX, Zeng MH, Chen XM. Structural insights into a new family of three-dimensional thiocyanate-bridged molecular double perovskites. CrystEngComm 2021. [DOI: 10.1039/d1ce00147g] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Four new three-dimensional thiocyanate-bridged molecular double perovskites with bent Cd–S–C angles in a narrow distribution range reveal highly distorted frameworks with a relatively strong structural rigidity.
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Affiliation(s)
- De-Xuan Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Kai-Ping Xie
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Ming-Hua Zeng
- School of Chemistry and Pharmaceutical Sciences
- GuangXi Normal University
- Guilin 541004
- P. R. China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
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108
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Zheng Y, Cai GY, Chen XM. [The enlightenment and thinking of the ISH 2020 global hypertension practice guidelines on the management of renal hypertension in China]. Zhonghua Yi Xue Za Zhi 2020; 100:3281-3284. [PMID: 33202487 DOI: 10.3760/cma.j.cn112137-20200519-01579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Zheng
- Department of Nephrology, the First Medical Center, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing 100853, China
| | - G Y Cai
- Department of Nephrology, the First Medical Center, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing 100853, China
| | - X M Chen
- Department of Nephrology, the First Medical Center, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing 100853, China
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109
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Dong XB, Chen L, Pan M, Huang WJ, Xiang H, Wang HP, Mo ZW, Ye JW, Zhang K, Chen XM. Intramolecular charge transfer ampholytes with water-induced pendulum-type fluorescence variation. Chem Commun (Camb) 2020; 56:10702-10705. [PMID: 32789365 DOI: 10.1039/d0cc03835k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Triphenylimidazole-based ampholytes with intramolecular charge transfer were designed with the introduction of carboxyl groups. In solution, the synergistic solvent and ionization effects on the ampholytes led to a unique pendulum-type fluorescence variation during the water content increasing process. Among them, 4-(4,5-bis(4-hydroxyphenyl)-1H-imidazol-2-yl)benzoic acid showed the most prominent three-step fluorescence switching property.
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Affiliation(s)
- Xiao-Bin Dong
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529000, P. R. China.
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110
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Xu WJ, Romanyuk K, Martinho JMG, Zeng Y, Zhang XW, Ushakov A, Shur V, Zhang WX, Chen XM, Kholkin A, Rocha J. Photoresponsive Organic–Inorganic Hybrid Ferroelectric Designed at the Molecular Level. J Am Chem Soc 2020; 142:16990-16998. [DOI: 10.1021/jacs.0c06048] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Wei-Jian Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Konstantin Romanyuk
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - José M. G. Martinho
- CQE-Centro de Quı́mica Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Ying Zeng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xue-Wen Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Andrei Ushakov
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Vladimir Shur
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Andrei Kholkin
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - João Rocha
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
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111
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Chen XM, Zhang YX, Bao YF, Xu YJ. Correlation analysis between vitamin D receptor gene polymorphism (BsmI) and hallux valgus. J BIOL REG HOMEOS AG 2020; 34:1343-1353. [PMID: 32867408 DOI: 10.23812/20-214-a] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hallux valgus is a common foot deformity disease caused by various extrinsic and intrinsic factors, and systemic conditions, but the etiopathogenesis and pathogenesis of this deformity are still unknown. Hallux valgus affects 10-20% of Chinese adults. Although considered highly heritable, the candidate gene is unclear. We conducted the first candidate gene study of hallux valgus to identify the biological mechanism. Between June 2015 and July 2018, the records and radiographs of 80 patients diagnosed with hallux valgus and 80 controls who were treated were analyzed. In order to compare the differences in severity associated with this deformity, the charts of 80 patients were divided into 3 groups from the angle of hallux valgus. Clinical and basic studies were also statistically compared by PCR and data analysis. Patients and controls had significant differences in age and gender, however, there were no significant differences in age and gender among the light, moderate and severe groups. Post-operative groups resulted in significant improvements in all of the measured radiographic parameters compared with pre-operative groups. BsmI seemed to show a specific variation, and may serve as a useful bio-marker for the disease (OR = 5.88, 95% CI 1.54-22.35, P <0.001). In this paper, the article which proved the VDR polymorphisms (BsmI) playing an important role in hallux valgus were studied to understand and manage the hallux valgus more scientifically.
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Affiliation(s)
- X M Chen
- Department of Foot and Ankle Surgery, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi 9th People's Hospital, Wuxi, China
| | - Y X Zhang
- Department of Foot and Ankle Surgery, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi 9th People's Hospital, Wuxi, China
| | - Y F Bao
- Department of Foot and Ankle Surgery, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi 9th People's Hospital, Wuxi, China
| | - Y J Xu
- Department of Foot and Ankle Surgery, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi 9th People's Hospital, Wuxi, China
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112
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Guo J, Chen XM, Liu ZL, Liu Z, Zhang H, Song XC. [Treatment of severe infection of cervicothoracic mediastinum after radiotherapy for postoperative laryngeal cancer patient by a multidisciplinary team: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:787-789. [PMID: 32791780 DOI: 10.3760/cma.j.cn115330-20200228-00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Guo
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
| | - X M Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
| | - Z L Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
| | - Z Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
| | - H Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
| | - X C Song
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hosptial, Qingdao Uniersity, Yantai 264000, China
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113
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Wang Y, Chen XM, Zhang H, Li DJ, Wang Q, Song XC. [Clinical analysis of 61 cases of deep neck infection]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:358-362. [PMID: 32306633 DOI: 10.3760/cma.j.cn115330-20190911-00574] [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 explore the clinical experience in care for deep neck infection (DNI) and to analyze the factors influencing surgical treatment outcome. Methods: A retrospective analysis was conducted on 61 patients with DNI admitted to the Department of Otorhinolaryngology Head and Neck Surgery of Yantai Yuhuangding Hospital from March 2013 to April 2019, including 33 males and 28 females, aged from 6 months to 81 years with a median age of 49 years. Patients were divided into two groups, 31 cases with localized infection (neck abscess) in Group A and 30 cases with diffuse infection (neck necrotizing fasciitis) in Group B. Patients in two groups were compared for sex, age, hospital stay, diabetes, tracheostomy, drainage methods, mediastinal infection, and pathogenic bacteria. The influence of different drainage methods on hospital stay in Group A was analyzed. SPSS 25.0 software was used for statistical analysis. Results: Of the 61 patients, 45 patients underwent surgical incision and drainage (21 cases in Group A and 24 cases in Group B), 23 patients underwent ultrasound-guided fine needle aspiration (UG-FNA) and catheter drainage (10 cases in Group A and 13 cases in Group B), and 7 patients in Group B were treated with both drainage methods. Pathogens were cultured in 31 cases (50.82%). There were significant differences in hospital stay, drainage method and mediastinal infection (χ(2) values were 26.890, 8.687 and 6.035, respectively, P<0.05), but no significant difference was found in sex, age, diabetes, tracheotomy and pathogenic bacteria (χ(2) values were 0.157, 3.685, 2.434, 3.631 and 0.807, respectively, P>0.05) between the two groups. There was no significant difference in hospital stay between two drainage methods in patients in Group A (χ(2)=1.560, P>0.05). Conclusions: There were significant differences in hospital stay, drainage method and mediastinal infection between patients with localized infection and diffuse infection, as diffuse infection is often associated with serious complications. UG-FNA and catheter drainage is an optional method for the treatment of localized infection, with minimal invasion and no influence on hospital stay.
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Affiliation(s)
- Y Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - X M Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - H Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - D J Li
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - Q Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - X C Song
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
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114
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Yang J, Xu ZF, Su J, Fan SF, Wang JY, Ji LD, Chen XM. [Research progress on the circadian clock regulation in cardiovascular system and association between circadian clock regulation and cardiovascular diseases]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:610-615. [PMID: 32842273 DOI: 10.3760/cma.j.cn112148-20190725-00430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Yang
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Z F Xu
- Department of Cardiology, Zhenhai People's Hospital, Ningbo 315202, China
| | - J Su
- Department of Cardiology, Ningbo First Hospital, Ningbo 315010, China
| | - S F Fan
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, China
| | - J Y Wang
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, China
| | - L D Ji
- Department of Biochemistry, School of Medicine, Ningbo University, Ningbo 315211, China
| | - X M Chen
- Department of Cardiology, Ningbo First Hospital, Ningbo 315010, China
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115
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Chen XM, Cao F, Zhang HM, Chen HR, Zhang JD, Zhi P, Li ZY, Wang YX, Lu XC. [Exploration of omics mechanism and drug prediction of coronavirus-induced heart failure based on clinical bioinformatics]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:587-592. [PMID: 32228827 DOI: 10.3760/cma.j.cn112148-20200308-00172] [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: Present study investigated the mechanism of heart failure associated with coronavirus infection and predicted potential effective therapeutic drugs against heart failure associated with coronavirus infection. Methods: Coronavirus and heart failure were searched in the Gene Expression Omnibus (GEO) and omics data were selected to meet experimental requirements. Differentially expressed genes were analyzed using the Limma package in R language to screen for differentially expressed genes. The two sets of differential genes were introduced into the R language cluster Profiler package for gene ontology (GO) and Kyoto gene and genome encyclopedia (KEGG) pathway enrichment analysis. Two sets of intersections were taken. A protein interaction network was constructed for all differentially expressed genes using STRING database and core genes were screened. Finally, the apparently accurate treatment prediction platform (EpiMed) independently developed by the team was used to predict the therapeutic drug. Results: The GSE59185 coronavirus data set was searched and screened in the GEO database, and divided into wt group, ΔE group, Δ3 group, Δ5 group according to different subtypes, and compared with control group. After the difference analysis, 191 up-regulated genes and 18 down-regulated genes were defined. The GEO126062 heart failure data set was retrieved and screened from the GEO database. A total of 495 differentially expressed genes were screened, of which 165 were up-regulated and 330 were down-regulated. Correlation analysis of differentially expressed genes between coronavirus and heart failure was performed. After cross processing, there were 20 GO entries, which were mainly enriched in virus response, virus defense response, type Ⅰ interferon response, γ interferon regulation, innate immune response regulation, negative regulation of virus life cycle, replication regulation of viral genome, etc. There were 5 KEGG pathways, mainly interacting with tumor necrosis factor (TNF) signaling pathway, interleukin (IL)-17 signaling pathway, cytokine and receptor interaction, Toll-like receptor signaling pathway, human giant cells viral infection related. All differentially expressed genes were introduced into the STRING online analysis website for protein interaction network analysis, and core genes such as signal transducer and activator of transcription 3, IL-10, IL17, TNF, interferon regulatory factor 9, 2'-5'-oligoadenylate synthetase 1, mitogen-activated protein kinase 3, radical s-adenosyl methionine domain containing 2, c-x-c motif chemokine ligand 10, caspase 3 and other genes were screened. The drugs predicted by EpiMed's apparent precision treatment prediction platform for disease-drug association analysis were mainly TNF-α inhibitors, resveratrol, ritonavir, paeony, retinoic acid, forsythia, and houttuynia cordata. Conclusions: The abnormal activation of multiple inflammatory pathways may be the cause of heart failure in patients after coronavirus infection. Resveratrol, ritonavir, retinoic acid, amaranth, forsythia, houttuynia may have therapeutic effects. Future basic and clinical research is warranted to validate present results and hypothesis.
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Affiliation(s)
- X M Chen
- National Medical Center for Geriatric Diseases, Department of Hematology, Second Medical Center, General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - F Cao
- National Medical Center for Geriatric Diseases, Second Medical Center, General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - H M Zhang
- National Medical Center for Geriatric Diseases, Department of Hematology, Second Medical Center, General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - H R Chen
- School of Management, Shanxi Medical University, Taiyuan 030001, China
| | - J D Zhang
- Graduate School of Medical College of Chinese People's Liberation Army, Beijing 100853, China
| | - P Zhi
- School of Management, Shanxi Medical University, Taiyuan 030001, China
| | - Z Y Li
- School of Management, Shanxi Medical University, Taiyuan 030001, China
| | - Y X Wang
- Department of Traditional Chinese Medicine, Dongfang Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - X C Lu
- National Medical Center for Geriatric Diseases, Department of Hematology, Second Medical Center, General Hospital of Chinese People's Liberation Army, Beijing 100853, China
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116
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Shi W, Shen J, Shen L, Hu W, Xu P, Baucom JA, Ma S, Yang S, Chen XM, Lu Y. Electrolyte Membranes with Biomimetic Lithium-Ion Channels. Nano Lett 2020; 20:5435-5442. [PMID: 32491862 DOI: 10.1021/acs.nanolett.0c01910] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High-performance lithium-ion batteries (LIBs) demand efficient and selective transport of lithium ions. Inspired by ion channels in biology systems, lithium-ion channels are constructed by chemically modifying the nanoporous channels of metal-organic frameworks (MOFs) with negatively charged sulfonate groups. Analogous to the biological ion channels, such pendant anionic moieties repel free anions while allowing efficient transport of cations through the pore channels. Implementing such MOFs as an electrolyte membrane doubly enhances the lithium-ion transference number, alleviates concentration polarization, and affords striking durability of high-rate LIBs. This work demonstrates an ion-selective material design that effectively tunes the ion-transport behavior and could assist with more efficient operation of LIBs.
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Affiliation(s)
- Wenyue Shi
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Jianqiang Shen
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Li Shen
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Wei Hu
- College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, P.R. China
| | - Pengcheng Xu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Jesse A Baucom
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Shengxiang Ma
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Shuxing Yang
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Xiao-Ming Chen
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P.R. China
| | - Yunfeng Lu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
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117
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Huang NY, He H, Li H, Liao PQ, Chen XM. A metal-organic framework with in situ generated low-coordinate binuclear Cu(i) units as a highly effective catalyst for photodriven hydrogen production. Chem Commun (Camb) 2020; 56:6700-6703. [PMID: 32418996 DOI: 10.1039/c9cc09589f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, we report a metal-organic framework featuring a binuclear copper unit, showing extraordinarily high catalytic activity (102.8 mmol g-1 h-1) for photodriven hydrogen generation, which is attributed to the synergistic catalytic effect between the two copper ions.
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Affiliation(s)
- Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hai He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hao Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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118
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Zhang SY, Shu X, Zeng Y, Liu QY, Du ZY, He CT, Zhang WX, Chen XM. Molecule-based nonlinear optical switch with highly tunable on-off temperature using a dual solid solution approach. Nat Commun 2020; 11:2752. [PMID: 32487992 PMCID: PMC7265397 DOI: 10.1038/s41467-020-15518-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/05/2020] [Indexed: 11/22/2022] Open
Abstract
Nonlinear optical switches that reversibly convert between on/off states by thermal stimuli are promising for applications in the fields of photoelectronics and photonics. Currently one main drawback for practical application lies in the control of their switch temperature, especially for the temperature range near room temperature. By mixed melting treatment, here we describe an alloy-like nonlinear optical switch with tunable switch temperature via a dual solid solution approach within the coordination polymer system. We initially prepare a coordination polymer (i-PrNHMe2)[Cd(SCN)3], which functions as a high-contrast thermoresponsive nonlinear optical switch originating from a phase transition at around 328 K. Furthermore, by taking advantage of a synergistic dual solid solution effect, the melt mixing of it with its analogue (MeNHEt2)[Cd(SCN)3], which features an unequal anionic chain templated by an isomeric ammonium, can afford coordination polymer solid solutions with switch temperatures that are tunable in a range of 273-328 K merely by varying the component ratio.
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Affiliation(s)
- Shi-Yong Zhang
- College of Chemistry and Chemical Engineering, MOE Key Laboratory of Functional Small Organic Molecule, Jiangxi Normal University, Nanchang, 330022, China
- College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou, 341000, China
| | - Xia Shu
- College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou, 341000, China
| | - Ying Zeng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Qing-Yan Liu
- College of Chemistry and Chemical Engineering, MOE Key Laboratory of Functional Small Organic Molecule, Jiangxi Normal University, Nanchang, 330022, China
| | - Zi-Yi Du
- College of Chemistry and Chemical Engineering, MOE Key Laboratory of Functional Small Organic Molecule, Jiangxi Normal University, Nanchang, 330022, China.
| | - Chun-Ting He
- College of Chemistry and Chemical Engineering, MOE Key Laboratory of Functional Small Organic Molecule, Jiangxi Normal University, Nanchang, 330022, China.
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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119
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Guan GW, Gao L, Wang JW, Wen XJ, Mao TH, Peng SW, Zhang T, Chen XM, Lu FM. [Exploring the mechanism of liver enzyme abnormalities in patients with novel coronavirus-infected pneumonia]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:100-106. [PMID: 32077659 DOI: 10.3760/cma.j.issn.1007-3418.2020.02.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objective: To explore and analyze the possible mechanism of liver injury in patients with coronavirus disease 2019 (novel coronavirus pneumonia, NCP). Methods: The correlation between ALT, AST and other liver enzyme changes condition and NCP patients' disease status reported in the literature was comprehensively analyzed. ACE2 expression in liver tissue for novel coronavirus was analyzed based on single cell sequencing (GSE115469) data. RNA-Seq method was used to analyze Ace2 expression and transcription factors related to its expression in liver tissues at various time-points after hepatectomy in mouse model of acute liver injury with partial hepatectomy. t-test or Spearman rank correlation analysis was used for statistical analysis. Results: ALT and AST were abnormally elevated in some patients with novel coronavirus infection, and the rate and extent of ALT and AST elevation in severe NCP patients were higher than those in non-severe patients. Liver tissue results of single cell sequencing and immunohistochemistry showed that ACE2 was only expressed in bile duct epithelial cells of normal liver tissues, and very low in hepatocytes. In a mouse model of acute liver injury with partial hepatectomy, Ace2 expression was down-regulated on the first day, but it was elevated up to twice of the normal level on the third day, and returned to normal level on seventh day when the liver recovered and hepatocyte proliferation stopped. Whether this phenomenon suggests that the bile duct epithelial cells with positive expression of Ace2 participate in the process of liver regeneration after partial hepatectomy deserves further study. In RNA-Seq data, 77 transcription factors were positively correlated with the expression of Ace2 (r > 0.2, FDR < 0.05), which were mainly enriched in the development, differentiation, morphogenesis and cell proliferation of glandular epithelial cells. Conclusion: We assumed that in addition to the over activated inflammatory response in patients with NCP, the up-regulation of ACE2 expression in liver tissue caused by compensatory proliferation of hepatocytes derived from bile duct epithelial cells may also be the possible mechanism of liver tissue injury caused by 2019 novel coronavirus infection.
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Affiliation(s)
- G W Guan
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - L Gao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - J W Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - X J Wen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - T H Mao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - S W Peng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - T Zhang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - X M Chen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - F M Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China; Hepatology Institute, Peking University People's Hospital, Beijing 100044, China
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120
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Cui JY, Ma YT, Yang C, Chen XM, Wang C, Yang JY, Wang CB. [Establishment of mouse model and preliminary screening of serum biomarkers for Candidemia]. Zhonghua Yi Xue Za Zhi 2020; 100:1185-1190. [PMID: 32311885 DOI: 10.3760/cma.j.cn112137-20191128-02589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To establish mouse models of Candidemia, and investigates statistically significant polypeptide peaks to provide auxiliary diagnosis of this disease. Methods: A total of 170 specific pathogen free adult male ICR mice with body mass of 27-30 g were completely randomly divided into Candida albicans infection group (n=80), Candida parapsilosis infection group (n=80) and the normal control group (n=10), and the two kinds of Candidemia mouse models were established via tail vein injection. The serum samples were analyzed by Matrix-assisted laser desorption-ionization time of flight mass spectrometry and relevant software, and the polypeptide peaks with significant differences were screened to establish diagnostic models. Results: A total of 65 differential polypeptide peaks were obtained compared with the Candida albicans infection group and the normal control group. Combined with m/z 1 100.4, 1 581.0, 3 808.0 as differential polypeptide peaks to established the diagnostic model, the sensitivity was 95.24%(40/42), the specificity was 90.63%(29/32), the accuracy rate was 93.24%(69/74), and the AUC value of the ROC curve was 0.972(95%CI: 0.941-1.000). A total of 73 differential polypeptide peaks were obtained compared with Candida parapsilosis infection group and the normal control group. Combined with m/z 1 433.2, 1 148.5, 4 093.5, 4 522.2, 8 140.9, 8 234.6 as differential polypeptide peaks to established the diagnostic model, the sensitivity was 95%(38/40), the specificity was 81.25%(26/32), the accuracy rate was 88.89%(64/72), and the AUC value of the ROC curve was 0.953(95%CI: 0.903-1.000). A total of 78 differential polypeptide peaks were obtained compared with Candida albicans infection group and Candida parapsilosis infection group. Combined with m/z 2 736.9, 8 091.5, 8 153.7 as differential polypeptide peaks to established the diagnostic model, the accuracy of distinguishing C. albicans infection from C. parapsilosis infection was 98.78%(81/82). Conclusions: Successfully screened the differential polypeptides and established the related diagnostic models. Which is helpful to find serum biomarkers for the auxiliary diagnosis of Candidemia, and provides a basis for the early diagnosis and the rational use of drugs.
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Affiliation(s)
- J Y Cui
- School of Laboratory and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Y T Ma
- School of Medicine, Nankai University, Tianjin 300192, China
| | - C Yang
- Center of Laboratory Medicine, the First Medicine Center of PLA General Hospital, Beijing 100853, China
| | - X M Chen
- School of Laboratory and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - C Wang
- Center of Laboratory Medicine, the First Medicine Center of PLA General Hospital, Beijing 100853, China
| | - J Y Yang
- Center of Laboratory Medicine, the First Medicine Center of PLA General Hospital, Beijing 100853, China
| | - C B Wang
- School of Laboratory and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
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121
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Huang RK, Chen XX, Xiao ZF, Liu DX, Zhang WX, Chen XM. Enhancing switchable dielectric property for crystalline supramolecular rotor compounds by adding polar components. Chem Commun (Camb) 2020; 56:4114-4117. [PMID: 32163092 DOI: 10.1039/d0cc01026j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Two new compounds were obtained by assembling the [(2-methoxy-5-nitro-anilinium)(18-crown-6)]+ cation with non-polar PF6- and polar SO3CF3- anions, respectively. Benefiting from its polar anion, the SO3CF3- compound reveals a more significant dielectric switching behaviour during phase transition, demonstrating an effective strategy to enhance the dielectric property by adding polar components.
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Affiliation(s)
- Rui-Kang Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Xiao-Xian Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Zhi-Feng Xiao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - De-Xuan Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
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122
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Chen XM, Luo CN, Wu LJ, Shi YM, Wu X, Meng XY, Lei X, Liu Y, Reyimujiang Y, Gulimire K, Wang TY, Xia FF. [The clinical significance of serum autoantibodies and HLA-B(27) molecule testing in Uygur patients with human immunodeficiency virus infection]. Zhonghua Nei Ke Za Zhi 2020; 59:195-199. [PMID: 32146745 DOI: 10.3760/cma.j.issn.0578-1426.2020.03.005] [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 explore the clinical value of serum autoantibodies and human leukocyte antigen (HLA-B(27)) molecular testing in Uygur patients with human immunodeficiency virus (HIV) infection. Method: A total of 727 HIV-infected Uygur patients who visited Kuche infectious diseases hospital during May 2016 to March 2017 were include in this study. The other 390 healthy people were enrolled as controls. Serum antinuclear antibodies (ANA), anti-cyclic citrullinated peptide (CCP) antibody, anti-extractable nuclear antigen (ENAs) antibody and HLA-B(27) molecule were tested. Result: Among 727 HIV-infected Uygur patients, 317 were males and 410 were females with mean age (35.52±13.44) years old. The mean duration of disease was (6.34±3.05) years. There were 697 (95.87%) patients receiving highly active antiretroviral therapy (HAART) with mean duration of treatment (5.52±3.47) years. The mean CD4(+)T cell count was (520±271) cells/μl in 202 HIV-infected patients, and mean virus load was (108 139±20 498) copies/ml in 20 HIV-infected patients. Rheumatic manifestations were recorded in 238 (32.74%) HIV-infected Uygur patients, mainly with dry mouth and dry eye (15.41%) , alopecia (9.90%) , arthralgia (8.94%) , ect. Compared with the health controls, positive ANA was more common in HIV infected Uygur patients (33.43% vs. 17.43%, P<0.001) with low titers (ANA titer:1∶100) . HIV-infected Uygur patients had higher positive anti-u1-RNP antibodies positive rate (1.10%), but lower anti-SSA antibodies positive rate (0.14%) and anti-CCP antibodies positive rate (0.28%). Patients with positive ANA in HAART group were significantly less than that in non-treatment group (32.71% vs. 50.00%, P=0.049). There were no correlations between ANA and duration of HAART, CD4(+)T cell counts and virus load (r values 0.061, 0.047, 0.121, respectively. P>0.05). Only one female patient was HLA-B(27) positive (0.14%), which was significantly lower than that in healthy controls (3.08%) (P<0.001). Also, only one patient was diagnosed with rheumatoid arthritis (RA). Conclusion: Autoimmune manifestations are common in HIV-infected Uygur patients. Several autoantibodies are positive, but the coincidence of rheumatic diseases is rare. It's noted that patients with autoimmune manifestations should be considered as a differential diagnosis of HIV infection.
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Affiliation(s)
- X M Chen
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - C N Luo
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - L J Wu
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - Y M Shi
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - X Wu
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - X Y Meng
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - X Lei
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - Y Liu
- Department of Infectious Disease, Kuche Infectious Disease Hospital, Xinjiang Uygur Autonomous Region Kuche 842000, China
| | - Yimiti Reyimujiang
- Department of Infectious Disease, Kuche Infectious Disease Hospital, Xinjiang Uygur Autonomous Region Kuche 842000, China
| | - Kare Gulimire
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - T Y Wang
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - F F Xia
- Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
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Chen WP, Liao PQ, Jin PB, Zhang L, Ling BK, Wang SC, Chan YT, Chen XM, Zheng YZ. The Gigantic {Ni36Gd102} Hexagon: A Sulfate-Templated “Star-of-David” for Photocatalytic CO2 Reduction and Magnetic Cooling. J Am Chem Soc 2020; 142:4663-4670. [DOI: 10.1021/jacs.9b11543] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wei-Peng Chen
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University, 99 Yanxiang Road, Xi’an, Shaanxi 710054, P. R. China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Peng-Bo Jin
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University, 99 Yanxiang Road, Xi’an, Shaanxi 710054, P. R. China
| | - Lei Zhang
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University, 99 Yanxiang Road, Xi’an, Shaanxi 710054, P. R. China
| | - Bo-Kai Ling
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University, 99 Yanxiang Road, Xi’an, Shaanxi 710054, P. R. China
| | - Shi-Cheng Wang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Tsu Chan
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University, 99 Yanxiang Road, Xi’an, Shaanxi 710054, P. R. China
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124
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Xu WJ, Zeng Y, Yuan W, Zhang WX, Chen XM. A large room-temperature entropy change in a new hybrid ferroelastic with an unconventional bond-switching mechanism. Chem Commun (Camb) 2020; 56:10054-10057. [DOI: 10.1039/d0cc04092d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new organic–inorganic hybrid exhibits a reversible unconventional bond-switching ferroelastic transition with a large entropy change of 146 J K−1 kg−1.
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Affiliation(s)
- Wei-Jian Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Ying Zeng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei Yuan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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125
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Tian XY, Zhou HL, Zhang XW, Wang C, Zhou DD, Chen XM, Zhang JP. Tuning the packing, interpenetration, and porosity of two-dimensional networks by metal ions and ligand side groups. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00642d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A methyl-modified bent pyridyl-carboxylate ligand reacts with three metal ions to yield three sql coordination networks, showing different packing and interpenetration modes and porosities.
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Affiliation(s)
- Xiao-Yun Tian
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Hao-Long Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xue-Wen Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Chao Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Dong-Dong Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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126
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Chen XM. Lanthanide-Iron-Oxo Clusters Centering the ε-Keggin-Fe<sub>13</sub> Ion. ACTA PHYS-CHIM SIN 2020. [DOI: 10.3866/pku.whxb202004030] [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: 11/11/2022]
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127
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Qiu RG, Chen XX, Huang RK, Zhou DD, Xu WJ, Zhang WX, Chen XM. Nitroprusside as a promising building block to assemble an organic–inorganic hybrid for thermo-responsive switching materials. Chem Commun (Camb) 2020; 56:5488-5491. [DOI: 10.1039/d0cc01877e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new nitroprusside-based hybrid (Me2NH2)[KFe(CN)5(NO)] exhibits thermo-responsive switching behaviours on uniaxial expansivity and SHG signal owing to flexible host–guest hydrogen bonds and the synchronously deformable inorganic framework.
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Affiliation(s)
- Rong-Guan Qiu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xiao-Xian Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Rui-Kang Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Dong-Dong Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei-Jian Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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128
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Chen XM. Crystal structure of (4-methyl-benzoato-κ2O,O′)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate, C24H45ClN4NiO7. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC24H45ClN4NiO7, monoclinic, P21/n (no. 14), a = 10.4947(11) Å, b = 14.3956(13) Å, c = 19.7182(18) Å, β = 93.212(6)°, V = 2974.3(5) Å3, Z = 4, Rgt(F) = 0.0426, wRref(F2) = 0.1389, T = 296(2) K.
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Affiliation(s)
- Xiao-Ming Chen
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, P.R. China
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129
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Pan J, Jia GK, Liu F, Chen XM, Zhang XY. Crystal structure of 4-methoxyphenyl-3-phenylpropiolate, C16H12O3. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC16H12O3, orthorhombic, Pbca (no. 19), a = 3.9935(16) Å, b = 16.629(7) Å, c = 19.406(8) Å, V = 1288.7(9) Å3, Z = 4, Rgt(F) = 0.0387, wRref(F2) = 0.1084, T = 296(2) K.
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Affiliation(s)
- Jun Pan
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
| | - Guo-Kai Jia
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
| | - Fang Liu
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
| | - Xiao-Ming Chen
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
| | - Xing-Yu Zhang
- South China University of Technology, Guangzhou, Guangdong 510641, China
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130
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Huang NY, Shen JQ, Ye ZM, Zhang WX, Liao PQ, Chen XM. An exceptionally stable octacobalt-cluster-based metal-organic framework for enhanced water oxidation catalysis. Chem Sci 2019; 10:9859-9864. [PMID: 32015809 PMCID: PMC6977550 DOI: 10.1039/c9sc03224j] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 06/30/2019] [Accepted: 08/28/2019] [Indexed: 11/21/2022] Open
Abstract
Extensive efforts have been devoted to developing efficient and durable catalysts for water oxidation. Herein, we report a highly stable metal-organic framework that shows high catalytic activity and durability for electrically driven (an overpotential of 430 mV at 10 mA cm-2 in neutral aqueous solution) and photodriven (a turnover frequency of 16 s-1 and 12 000 cycles) water oxidation, representing the best catalyst for water oxidation reported to date. Computational simulation and isotope tracing experiments showed that the μ4-OH group of the {Co8(μ4-OH)6} unit participates in the water oxidation reaction to offer an oxygen vacancy site with near-optimal OH- adsorption energy.
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Affiliation(s)
- Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
| | - Jian-Qiang Shen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
- Department of Chemical and Biomolecular Engineering , University of California , Los Angeles , CA 90095 , USA
| | - Zi-Ming Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China .
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Gu XF, Chen XM, Chen HJ, Xu TT, Qiu ZW, Sun DD, Ge XT, Ying SM, Dai YR. [The role of S100A8/RAGE and Caveolin-1 and the effect of roxithromycin on their expression in a rat model of neutrophilic asthma]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 42:845-851. [PMID: 31694095 DOI: 10.3760/cma.j.issn.1001-0939.2019.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the role of S100A8, the receptor for advanced glycation endproducts (RAGE) and Caveolin-1 in neutrophilic asthmatic rats, and to further study the intervention of roxithromycin and the possible mechanisms. Methods: Male Brown Norway rats were randomly assigned to a control group, an asthma group and a Roxithromycin group. The asthmatic rat model was established by intraperitoneal injection of ovalbumin (OVA) and Freund's complete adjuvant (FCA) mixture, and aerosol inhalation of OVA. Rats in the Roxithromycin group were given roxithromycin injection 30 mg/kg 30 minutes before each challenge. Rats in the control and the asthma groups were replaced with equal volumes of saline, respectively. Bronchoalveolar lavage fluid (BALF) neutrophil percentage (Neu%) and pathological changes of pulmonary tissue (hematoxylin-eosin, HE staining) were measured to confirm the establishment of asthmatic models. The concentration of inflammatory cytokines and S100A8 were quantified by enzyme-linked immunosorbent assay (ELISA), and the expression of Caveolin-1 and RAGE at protein levels were detected by immunohistochemistry and Western blot. Results: Neu% in BALF of the asthma group was significantly higher than those of the control group, and Neu% in the Roxithromycin group was lower than the asthma group (all P<0.01). Pulmonary histology revealed that there were a large number of inflammatory cells infiltrated in the bronchial and perivascular, pulmonary interstitial and alveolar spaces, and the bronchial wall and smooth muscles were thickened obviously in the asthma group. Rats in the Roxithromycin group showed milder inflammation and airway remodeling change than the asthma group. There was no obvious pathological damage in the control group. The concentration of IL-6 and IL-17 in BALF and serum of rats in the asthma group were significantly higher than those in the control group (P<0.01), and Roxithromycin inhibited the high expression of these cytokines (P<0.05). The expression of S100A8 and RAGE in the asthma group were significantly higher than those in the control group [(20.6±4.4) vs (7.1±2.0) ng/L; (885±118) vs (462±102) ng/L; (14.2±1.7) vs (7.6±1.8) ng/L; (774±166) vs (406±69) ng/L, all P<0.05], and Roxithromycin inhibited the high expression of these proteins [(14.3±3.7) vs (20.6±4.4) ng/L; (650±53) vs (885±118) ng/L; (10.4±1.2) vs (14.2±1.7) ng/L; (560±64) vs (728±72) ng/L] (all P<0.05). Meanwhile, the expression of Caveolin-1 in the asthma group was significantly lower than that in the control group (P<0.01), and Roxithromycin up-regulated its expression (P<0.01). Correlation analysis showed that there was a significantly positive correlation between the expression of S100A8 and RAGE (r=0.706, P<0.01), while there was a significantly negative correlation between the expression of S100A8 and Caveolin-1 (r=-0.775, P<0.01), and between the expression of Caveolin-1 and RAGE (r=-0.919, P<0.01). Conclusion: S100A8 and Caveolin-1 may play an important role in neutrophilic asthma via RAGE, and Roxithromycin may exerts anti-inflammatory effects and inhibition of airway remodeling partly through this signaling pathway.
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Affiliation(s)
- X F Gu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
| | - X M Chen
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
| | - H J Chen
- Department of Respiratory Medicine, Jinhua Municipal Central Hospital, Zhejiang, 321000, China
| | - T T Xu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
| | - Z W Qiu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
| | - D D Sun
- Department of Infectious Medicine, the First People's Hospital of Yuhang District, Hangzhou 311100, China
| | - X T Ge
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
| | - S M Ying
- Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University, Hangzhou 310058, China
| | - Y R Dai
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Zhejiang 325027, China
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132
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Chen XM, Farmer B, Woods JS, Dhuey S, Hu W, Mazzoli C, Wilkins SB, Chopdekar RV, Scholl A, Robinson IK, De Long LE, Roy S, Hastings JT. Spontaneous Magnetic Superdomain Wall Fluctuations in an Artificial Antiferromagnet. Phys Rev Lett 2019; 123:197202. [PMID: 31765174 DOI: 10.1103/physrevlett.123.197202] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/16/2019] [Indexed: 06/10/2023]
Abstract
Collective dynamics often play an important role in determining the stability of ground states for both naturally occurring materials and metamaterials. We studied the temperature dependent dynamics of antiferromagnetically ordered superdomains in a square artificial spin lattice using soft x-ray photon correlation spectroscopy. We observed an exponential slowing down of superdomain wall motion below the antiferromagnetic onset temperature, similar to the behavior of typical bulk antiferromagnets. Using a continuous time random walk model we show that these superdomain walls undergo low-temperature ballistic and high-temperature diffusive motions.
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Affiliation(s)
- X M Chen
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Electrical and Computer Engineering, University of Kentucky, Lexington, Kentucky 40506, USA
| | - B Farmer
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - J S Woods
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - S Dhuey
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - W Hu
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Mazzoli
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S B Wilkins
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R V Chopdekar
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - I K Robinson
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- London Centre for Nanotechnology, University College, Gower Street, London WC1E 6BT, United Kingdom
| | - L E De Long
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - S Roy
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J T Hastings
- Department of Electrical and Computer Engineering, University of Kentucky, Lexington, Kentucky 40506, USA
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Shi F, Wu M, Lian SS, Mo ZQ, Gou Q, Xu RD, Li HL, Huang ZM, Wu PH, Chen XM. Radiofrequency Ablation Following Downstaging of Hepatocellular Carcinoma by Using Transarterial Chemoembolization: Long-term Outcomes. Radiology 2019; 293:707-715. [PMID: 31638492 DOI: 10.1148/radiol.2019181991] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Transarterial chemoembolization (TACE) is an effective downstaging procedure for hepatocellular carcinoma (HCC). However, knowledge of the effectiveness of radiofrequency ablation (RFA) after downstaging of HCC is currently lacking. Purpose To evaluate the clinical outcomes of RFA after downstaging of HCC by using TACE. Materials and Methods This retrospective study investigated a cohort of patients who underwent RFA with curative intent after downstaging with TACE to meet Milan criteria (one lesion up to 5 cm or no more than three lesions ≤3 cm without vascular invasion or extrahepatic metastasis) from January 2012 to July 2017. A control group of patients initially meeting the Milan criteria also underwent RFA as first-line treatment in the same period. Overall survival (OS), disease-free survival (DFS), and major complication rates were compared by using the log-rank test. To reduce potential bias, a propensity score analysis was also performed. Results There were 72 patients (median age, 56.5 years; range, 30-78 years; 67 men) in the downstaging group and 357 patients meeting the Milan criteria (median age, 58.0 years; range, 25-87 years; 313 men) included in this study. After propensity score matching, the 1-, 3-, and 5-year OS rates were 99%, 80%, and 66%, respectively, for the patients in the downstaging group and 94%, 84%, and 69%, respectively, for the patients in the Milan criteria group. The 1-, 3-, and 5-year DFS rate were 73%, 34%, and 24% for the downstaging group and 74%, 43%, and 37% for the Milan criteria group. There were no differences in the OS, DFS, or major complication rates between the two groups (P = .74, P = .39, P = .73, respectively). Conclusion The long-term patient survival and major complication rates of radiofrequency ablation following transarterial chemoembolization downstaging for hepatocellular carcinoma were similar to that of patients initially meeting the Milan criteria. © RSNA, 2019 See also the editorial by vanSonnenberg and Mueller in this issue.
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Affiliation(s)
- Feng Shi
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Ming Wu
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Shan-Shan Lian
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Zhi-Qiang Mo
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Qing Gou
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Rong-De Xu
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Hui-Lan Li
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Zhi-Mei Huang
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Pei-Hong Wu
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
| | - Xiao-Ming Chen
- From the Department of Interventional Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Second Rd, Guangzhou, Guangdong 510080, China (F.S., Z.Q.M., Q.G., R.D.X., X.M.C.); Zhong-shan School of Medicine, Sun Yat-Sen University, Guangzhou, China (M.W.); Department of Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (S.S.L., H.L.L.); and Department of Interventional Radiology, Sun Yat-sen University Cancer Center, Guangzhou, China (Z.M.H., P.H.W.)
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Pan XM, Zhang GJ, Chen XM, Liang L, Tang N, Wang K. [Fructose-1, 6-bisphosphatase inhibits autophagy and proliferation in liver cancer cells]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:687-692. [PMID: 31594093 DOI: 10.3760/cma.j.issn.1007-3418.2019.09.006] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To construct the recombinant adenoviral containing fructose 1, 6-biphosphatase 1 (FBP1), and to investigate whether FBP1 has effect on autophagy and proliferation in liver cancer cells (HepG2). Methods: FBP1 cDNA sequence was amplified by PCR and cloned in adenovirus vector pAdTrack-TO4, and then recombinant adenovirus plasmid pAdTrack-FBP1 was constructed. The recombinant adenovirus plasmid was transfected into HEK293 cells by Lipofectamine 3000. High-titer of recombinant adenovirus AdFBP1 was obtained by packaging and amplification. HepG2 cells were infected with recombinant adenovirus AdFBP1, and the Mock and AdGFP group were set at the same time. Western blot and confocal laser scanning microscopy were used to observe the effect of FBP1 on the level of autophagy in hepatocellular carcinoma cells, and the effect of FBP1on the proliferation was observed by MTS and colony formation assay. A t-test and one-way ANOVA were used to compare the mean between group. Results: A high-titer recombinant adenovirus FBP1 was successfully constructed. Western blot and confocal laser scanning microscopy showed that the level of autophagy in AdFBP1 group was significantly lower than that in AdGFP group. Western blot results showed that LC3-II protein expression level in AdGFP was 1.10 ± 0.10 and 0.30 ± 0.01 in AdFBP1 group, F = 90.36, P < 0.01. Confocal laser scanning microscopy analysis showed that the average number of autophages in AdGFP was 28.33 ± 1.53 and 12.33 ± 1.53 in AdFBP1group, F = 97.40, P < 0.01. In addition, the results of colony formation assay and MTS assay showed that the proliferation of liver cancer cells in the AdFBP1 group was significantly inhibited compared with the AdGFP group. The results of colony formation showed that the cell clones in the AdGFP group was 65.66 ± 2.57 and 34.00 ± 2.00 in AdFBP1 group, F = 141.50, P < 0.01. MTS results showed that the absorbance of AdGFP group at 96h was 39.13 ± 2.21 and 30.61 ± 3.33 in AdFBP1 group, F = 7.80, P < 0.05. Conclusion: FBP1 inhibited the autophagy and proliferation in liver cancer cells (HepG2).
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Affiliation(s)
- X M Pan
- The Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Chongqing Medical University, Chongqing 400016, China
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Yang X, Zhou HL, He CT, Mo ZW, Ye JW, Chen XM, Zhang JP. Flexibility of Metal-Organic Framework Tunable by Crystal Size at the Micrometer to Submillimeter Scale for Efficient Xylene Isomer Separation. Research (Wash D C) 2019; 2019:9463719. [PMID: 31922147 PMCID: PMC6946284 DOI: 10.34133/2019/9463719] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/17/2019] [Indexed: 11/16/2022]
Abstract
Understanding, controlling, and utilizing the flexibility of adsorbents are of great importance and difficulty. Analogous with conventional solid materials, downsizing to the nanoscale is emerging as a possible strategy for controlling the flexibility of porous coordination polymers (or metal-organic frameworks). We report a unique flexibility controllable by crystal size at the micrometer to submillimeter scale. Template removal transforms [Cu2(pypz)2]·0.5p-xylene (MAF-36, Hpypz = 4-(1H-pyrazol-4-yl)pyridine) with one-dimensional channels to α-[Cu2(pypz)2] with discrete small cavities, and further heating gives a nonporous isomer β-[Cu2(pypz)2]. Both isomers can adsorb p-xylene to give [Cu2(pypz)2]·0.5p-xylene, meaning the coexistence of guest-driven flexibility and shape-memory behavior. The phase transition temperature from α-[Cu2(pypz)2] to β-[Cu2(pypz)2] decreased from ~270°C to ~150°C by increasing the crystal size from the micrometer to the submillimeter scale, ca. 2-3 orders larger than those of other size-dependent behaviors. Single-crystal X-ray diffraction showed coordination bond reconstitution and chirality inversion mechanisms for the phase transition, which provides a sufficiently high energy barrier to stabilize the metastable phase without the need of downsizing to the nanoscale. By virtue of the crystalline molecular imprinting and gate-opening effects, α-[Cu2(pypz)2] and β-[Cu2(pypz)2] show unprecedentedly high p-xylene selectivities of 16 and 51, respectively, as well as ultrafast adsorption kinetics (<2 minutes), for xylene isomers.
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Affiliation(s)
- Xiao Yang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hao-Long Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Chun-Ting He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zong-Wen Mo
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Wen Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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136
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Wang SS, Chen XX, Huang B, Huang RK, Zhang WX, Chen XM. Unique Freezing Dynamics of Flexible Guest Cations in the First Molecular Postperovskite Ferroelectric: (C
5
H
13
NBr)[Mn(N(CN)
2
)
3
]. CCS Chem 2019. [DOI: 10.31635/ccschem.019.20190012] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Sha-Sha Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
| | - Xiao-Xian Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
| | - Bo Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
| | - Rui-Kang Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275 (China)
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137
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Jia GK, Xiu-Wen C, Jing-Kun L, Chen XM. Crystal structure of 2-(naphthalen-2-yl)-1,8-naphthyridine, C 18H 12N 2. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C18H12N2, monoclinic, P21/c (no. 14), a = 27.514(5) Å, b = 6.3231(11) Å, c = 7.4175(13) Å, β = 95.805(2)°, V = 1283.8(4) Å3, Z = 4, R
gt(F) = 0.0439, wR
ref(F
2) = 0.1233, T = 296(2) K.
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Affiliation(s)
- Guo-Kai Jia
- Department of Biology and Chemistry , Hunan University of Science and Engineering , Yongzhou Hunan 425199 , People’s Republic of China
- Hunan Key Laboratory of Comprehensive Utilization of Advantage Plants Resources of Hunan South , Hunan University of Science and Engineering , Yongzhou Hunan 425199 , People’s Republic of China
| | - Chen Xiu-Wen
- School of Biotechnology and Health Sciences , Wuyi University , Jiangmen 529020 , People’s Republic of China
| | - Lv Jing-Kun
- Hunan HengWei Pharmaceutical Co., Ltd , Yongzhou Hunan 425199 , People’s Republic of China
| | - Xiao-Ming Chen
- Department of Biology and Chemistry , Hunan University of Science and Engineering , Yongzhou Hunan 425199 , People’s Republic of China
- Hunan HengWei Pharmaceutical Co., Ltd , Yongzhou Hunan 425199 , People’s Republic of China
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Gu XF, Chen HJ, Chen XM, Xu TT, Qiu ZW, Wu LQ, Dai W, Ying SM, Dai YR. [Expression of RAGE in asthmatic rats and the intervention of Roxithromycin]. Zhonghua Yi Xue Za Zhi 2019; 99:2542-2546. [PMID: 31484284 DOI: 10.3760/cma.j.issn.0376-2491.2019.32.015] [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 expression of the Receptor of Advanced glycation end products (RAGE) in asthmatic rats, and explore the intervention of Roxithromycin. Methods: A total of 18 Specific Pathogen Free-class Brown Norway male rats were randomly divided into control group, asthma model group and Roxithromycin group, with 6 rats in each group. The asthmatic model was sensitized by intraperitoneal injection of Ovalbumin (OVA)+Al(OH)(3), and challenged with OVA. Rats in Roxithromycin group were given Roxithromycin 30 mg/kg 30 minutes before each challenge. Rats in control group and asthma model group were treated with equal volume of saline. The concentrations of RAGE and interleukin (IL)-4 in serum and bronchoalveolar lavage fluid (BALF) were measured by enzyme-linked immunosorbent (ELISA); the pathological changes of lung tissues were observed by HE-staining; the thickness of airway wall and airway smooth muscle were measured by Image-Pro Plus; the relative expression of RAGE in lung tissues were detected by Western blot. Results: In asthma model group, the concentrations of RAGE and IL-4 in the serum and BALF were obviously higher than those in control group [(494±32) vs (327±45) ng/L; (32.4±5.8) vs (13.1±2.9) ng/L; (553±38) vs (399±56) ng/L; (37.8±3.4) vs (19.4±2.5) ng/L] (all P<0.01); in Roxithromycin group, the concentrations of RAGE and IL-4 in the serum and BALF were obviously lower than those in asthma model group [(438±18) vs (494±32) ng/L; (22.8±6.0) vs (32.4±5.8) ng/L; (444±42) vs (553±38) ng/L; (25.6±4.5) vs (37.8±3.4) ng/L] (all P<0.05). In asthma model group, the bronchial wall was thickened, the lumen was narrow, the mucosal wrinkles were significantly increased, edema appeared under the mucosa, and a large number of inflammatory cells infiltrated and aggregated in the bronchi, perivascular and alveolar spaces; the thickness of airway wall and airway smooth muscle were significantly increased than those in control group (P<0.01); in Roxithromycin group, airway inflammation and remodeling were alleviated compared with those in asthma model group (P<0.05). In asthma model group, the expression of RAGE in lung tissues were significantly increased than those in control group (P<0.01); in Roxithromycin group, the expression of RAGE were significantly decreased than those in asthma model group (P<0.01). There were positive correlations between the expression of RAGE and IL-4 in BALF and serum (r=0.782, 0.804, all P<0.01); there were positive correlations between RAGE and total white cell counts, eosinophil counts, smooth muscle thickness (r=0.897, 0.927, 0.860, all P<0.01). Conclusions: The increasing of RAGE in asthmatic rats are positively correlated with airway inflammation and airway remodeling. Roxithromycin may inhibit the development of asthma by reducing the expression of RAGE.
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Affiliation(s)
- X F Gu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - H J Chen
- Department of Respiratory Medicine, Jinhua Municipal Central Hospital, Jinhua 321000, China
| | - X M Chen
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - T T Xu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Z W Qiu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - L Q Wu
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - W Dai
- Department of Neurology Rehabilitation, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - S M Ying
- Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University, Hangzhou 310058, China
| | - Y R Dai
- Department of Respiratory Medicine, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Wang BB, Gong XR, Liu ZL, Zhang F, Chen XM, Li YY, Wang XY, Li ZY, Zhang QQ, Wang CY. [Local combined flap for repairing large skin defects in nose tumor: report of 7 cases]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:378-379. [PMID: 31137099 DOI: 10.3760/cma.j.issn.1673-0860.2019.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B B Wang
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
| | - X R Gong
- Department of Otorhinolaryngology, Penglai people's Hospital, Penglai 264300, China
| | - Z L Liu
- Department of Otorhinolaryngology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - F Zhang
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
| | - X M Chen
- Department of Otorhinolaryngology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - Y Y Li
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
| | - X Y Wang
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
| | - Z Y Li
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
| | - Q Q Zhang
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China; Department of Otorhinolaryngology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - C Y Wang
- Department of Otorhinolaryngology, Zhifu Branch of Yantai Yuhuangding Hospital, Yantai 264000, China
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140
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Sun L, Zhang L, Chen XM, Li P, Zhao HX, Chen JM, Yang K, Ma ZY, Wang P. [Clinicopathological features of intestinal mucosal lesions in AIDS patients and their relation with CD4+ T lymphocytes]. Zhonghua Bing Li Xue Za Zhi 2019; 48:378-384. [PMID: 31104678 DOI: 10.3760/cma.j.issn.0529-5807.2019.05.009] [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 histopathological features of different opportunistic infections and tumors of the intestinal mucosa in AIDS patients, and to explore the correlation between different lesions and CD4+ T lymphocyte levels. Methods: Colonic mucosal biopsy specimens of 263 patients with clinically diagnosed AIDS and abdominal pain, diarrhea, blood in the stool and other gastrointestinal symptoms were collected from Beijing Ditan Hospital from 2010 to 2018. There were 232 males and 31 females, with age range 10-81 (mean 40±13) years. HE staining, histochemical special staining, immunohistochemical staining, and in-situ hybridization were used to detect the expression of different opportunistic infection pathogens, tumors and CD4+ T lymphocytes. Peripheral blood was also taken for CD4+ T lymphocytes, CD8+ T lymphocytes, HIV viral load and routine indicators. Results: The cohort included 263 intestinal mucosal biopsy specimens. There were 175 cases (66.5%) of non-specific inflammation, and pathogens were detected in 41 cases (15.6%), including 20 cases(7.6%) of cytomegalovirus (CMV) infection, 12 cases (4.6%) of mycobacterial infection, eight cases (3.0%) of amoeba infestation, and one case (0.3%) of talaromycesmarneffei infection; there were also 41 (15.6%) neoplastic lesions including 25 cases (9.5%) of intraepithelial neoplasia, 10 cases (3.8%) of adenocarcinoma and squamous cell carcinoma, six cases (2.3%) of lymphoma; and six cases (2.3%) of ulcerative colitis. The peripheral blood CD4+T lymphocyte levels of patients with CMV, mycobacteria and talaromycesmarneffei were less than 200/μL; the peripheral blood CD4+ T lymphocyte level (P<0.01) and intestinal mucosa CD4+T lymphocytes (P<0.01) were all significantly lower than those in patients with non-specific inflammation. The peripheral red blood cells and hemoglobin levels of patients with CMV and mycobacterial infection (P<0.01), adenocarcinoma and squamous cell carcinoma (P<0.05) were significantly lower than those of non-specific inflammation patients. Conclusions: Pathologic examination of intestinal mucosa can identify specific infections and neoplastic lesions in AIDS patients; the most common lesions are non-specific inflammation, and CMV infection is the most common opportunistic infections; CMV, mycobacteria and talaromycesmarneffei infections are associated with decreased levels of CD4+ T lymphocytes in peripheral blood and intestinal mucosa; entamoeba histolytica infestation and non-HIV-related neoplastic lesions such as intraepithelial neoplasia, adenocarcinoma and squamous cell carcinoma are not associated with changes in AIDS immune function.
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Affiliation(s)
- L Sun
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - L Zhang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - X M Chen
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - P Li
- Department of Gastroenterology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - H X Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - J M Chen
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - K Yang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - Z Y Ma
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - P Wang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
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Zhang J, Chen J, Guan GW, Zhang T, Lu FM, Chen XM. [Expression and clinical significance of chemokine CXCL10 and its receptor CXCR3 in hepatocellular carcinoma]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:402-408. [PMID: 31209409 DOI: 10.19723/j.issn.1671-167x.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To explore the expression and clinical significance of chemokine CXCL10 and CXCR3 in hepatocellular carcinoma (HCC). METHODS The expression and prognostic of CXCL10 and CXCR3 in HCC tumor tissues and non-tumor tissues were analyzed in two different publicly available databases the Cancer Genome Atlas (TCGA) and Liver Cancer Institute (LCI). In addition, quantitative real-time PCR (qPCR) was used to detect the mRNA expression of CXCL10 and CXCR3 in 45 HCC clinical samples with HBV infection background. Pearson correlation and Spearman rank correlation were used to determine the correlation between the expression level of CXCL10 and CXCR3 in tumor and non-tumor tissues. RESULTS In TCGA database, the expression of CXCL10 in HCC tumor tissues was significantly higher than that in non-tumor tissues (nonpaired samples: 3.379±2.081 vs. 2.213±2.274, P<0.001; paired samples: 3.159±2.267 vs. 2.213±2.274, P=0.018). Similarly in LCI datebase (7.625±1.683 vs. 7.287±1.328, P=0.009). And higher CXCL10 expression was significantly associated with a better prognosis in the patients with HCC both in TCGA and LCI database (P=0.107, P=0.002). In TCGA database, the expression of CXCR3 in HCC tumor tissues was significantly higher than that in non-tumor tissues (nonpaired samples: -0.906±1.697 vs. -1.978±1.629, P<0.001; paired samples: -1.329±1.732 vs. -1.978±1.629, P=0.037), while lower in LCI database (3.989±0.339 vs. 4.074±0.309, P=0.003). In both databases, higher CXCR3 expression was significantly associated with a better prognosis in the HCC patients (P=0.004, P=0.014). Furthermore, in TCGA database, the expression level of CXCL10 and CXCR3 was positively correlated both in HCC tumor tissues and matched non-tumor tissues (r=0.584, P<0.001; r=0.776, P<0.001). The qPCR assay showed that the expression of CXCL10 in HBV-related HCC tumor tissues was significantly higher than those in normal liver tissues [0.479(0.223, 1.094) vs. 0.131(0.106, 0.159), P=0.010], and the expression in HBV-related non-tumor tissues was also significantly higher than those in normal liver tissues [0.484(0.241, 0.846) vs. 0.131(0.106, 0.159), P<0.001]. The same was true as CXCR3 [0.011(0.006, 0.019) vs. 0.002(0.001, 0.004), P=0.004; 0.016(0.011, 0.021) vs. 0.002(0.001, 0.004), P<0.001]. However there was no significant difference of CXCL10 and CXCR3 between tumor tissues and matched non-tumor tissues (P=1.000, P=0.374). CONCLUSION Expression of CXCL10 was up-regulated in HCC tissues, expression of CXCR3 was down-regulated in HBV-related HCC tissues, and the higher expression of both genes was correlated with better overall survival in HCC patients.
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Affiliation(s)
- J Zhang
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - J Chen
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - G W Guan
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - T Zhang
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - F M Lu
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - X M Chen
- Department of Microbiology & Infectious Disease Center, Peking University School of Basic Medical Sciences, Beijing 100191, China
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Jiang XL, Gu XY, Zhou XX, Chen XM, Zhang X, Yang YT, Qin Y, Shen L, Yu WF, Su DS. Intestinal dysbacteriosis mediates the reference memory deficit induced by anaesthesia/surgery in aged mice. Brain Behav Immun 2019; 80:605-615. [PMID: 31063849 DOI: 10.1016/j.bbi.2019.05.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 01/17/2019] [Accepted: 05/03/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Postoperative cognitive dysfunction (POCD) is associated with increased morbidity and mortality and has become a major concern for patients and caregivers. POCD is most common in older patients. Previous studies demonstrated that the gut microbiome affects cognitive function and behaviour, and perioperative factors, including the operation itself, antibiotics, opioids or acid-inducing drugs, affect the gut microbiome. Thus, we hypothesised that intestinal dysbacteriosis caused by anaesthesia/surgery induces POCD. METHODS Tibial fracture internal fixation was performed in 18-month-old C57BL/6 mice under isoflurane anaesthesia to establish the POCD model. The Morris water maze was used to measure reference memory after anaesthesia/surgery. High-throughput sequencing of 16S rRNA from faecal samples was used to investigate changes in the abundance of intestinal bacteria after anaesthesia/surgery. To confirm the role of the gut microbiome in POCD, we pretreated mice with compound antibiotics or mixed probiotics (VSL#3). Anaesthesia/surgery impaired reference memory and induced intestinal dysbacteriosis in aged mice. RESULTS The 16S rRNA sequencing data revealed 37 genera (18 families) of bacteria that changed in abundance after anaesthesia/surgery. Pretreating mice with compound antibiotics or mixed probiotics (VSL#3) prevented the learning and memory deficits induced by anaesthesia/surgery. We further conducted quantitative real-time polymerase chain reaction (qRT-PCR) of 22 common types of bacteria among the 37 total types to verify the results of bacterial flora changes after anaesthesia/surgery. Numbers of 8 types of bacteria changed after anaesthesia/surgery but returned to normal after treatment with a mix of probiotics. CONCLUSIONS Our data suggest that deficits in reference memory induced by anaesthesia/surgery are mediated by intestinal dysbacteriosis.
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Affiliation(s)
- X L Jiang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - X Y Gu
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - X X Zhou
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - X M Chen
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - X Zhang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - Y T Yang
- Department of Anesthesiology, First Hospital in Quanzhou City of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Y Qin
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - L Shen
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - W F Yu
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - D S Su
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China.
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143
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Hu K, Luo Q, Zhu XF, Sun SH, Feng GL, Liu ZY, Chen XM. [Isolation of homogeneous polysaccharide from Poria cocos and effect of its sulfated derivatives on migration of human breast cancer MDA-MB-231 cells]. Zhongguo Zhong Yao Za Zhi 2019; 44:2835-2840. [PMID: 31359698 DOI: 10.19540/j.cnki.cjcmm.20190321.305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
SATB1 plays a crucial role in the invasion and metastasis of breast cancer,and inhibition of SATB1 expression can effectively control breast cancer metastasis. In this study,homogeneous polysaccharides were isolated from Poria cocos and their sulfated derivatives were prepared to screen out the polysaccharide compositions with inhibitory effects on SATB1 expression. Smal-molecule components were removed from P. cocos by ethanol extraction,and P. cocos crude polysaccharide PPS was obtained by water extraction and ethanol precipitation. Then PPS was successively separated by DEAE Sepharose fast flow anion-exchange and Superdex-75 gel permeation chromatographic steps to give PPSW-1. The structure of PPSW-1 was identified and its sulfated derivatives were prepared. Then their inhibitory effects on human breast cancer MDA-MB-231 cells were investigated. A kind of polysaccharide,PPSW-1 with inhibitory effect on human breast cancer MDA-MB-231 cells,was obtained from P. cocos,with a relative molecular weight of 3. 06×104,and structure of 1,6-branched 1,3-α-D-galactan. PPSW-1 and its sulfated derivative Sul-W-1 showed good inhibitory effect on cells migration,and the water solubility of Sul-W-1 was better than that of PPSW-1. In addition,it was found that polysaccharide of P. cocos and its sulfated derivative can inhibit expression of SATB1. In this study,a kind of homogeneous polysaccharide with inhibitory effect on human breast cancer MDA-MB-231 cells was isolated from P. cocos,and its sulfated derivative with similar efficacy but better solubility was prepared,laying the foundation for the substance basis study of P. cocos.
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Affiliation(s)
- Kang Hu
- Department of Thyroid Breast Surgery,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Qing Luo
- Cancer Research Laboratory,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Xiao-Feng Zhu
- Department of Thyroid Breast Surgery,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Su-Hong Sun
- Department of Thyroid Breast Surgery,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Guo-Li Feng
- Department of Thyroid Breast Surgery,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Zheng-Yun Liu
- Research Center for Medicine & Biology,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
| | - Xiao-Ming Chen
- Department of Thyroid Breast Surgery,Affiliated Hospital of Zunyi Medical College Zunyi 563000,China
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144
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Chen XM, Li YJ, Han D, Zhu HC, Xue CD, Chui HC, Cao T, Qin KR. A Capillary-Evaporation Micropump for Real-Time Sweat Rate Monitoring with an Electrochemical Sensor. Micromachines (Basel) 2019; 10:mi10070457. [PMID: 31284628 PMCID: PMC6680474 DOI: 10.3390/mi10070457] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 01/05/2023]
Abstract
Sweat collection and real time monitoring of sweat rate play essential roles in physiology monitoring and assessment of an athlete’s performance during exercise. In this paper, we report a micropump for sweat simulant collection based on the capillary–evaporation effect. An electrochemical sensor is integrated into the micropump, which monitors the flow rate in real-time by detecting the current using three electrodes. The evaporation rate from micropore array, equivalent to the sweat rate, was theoretically and numerically investigated. The designed micropump yields the maximum collection rate as high as 0.235 μL/min. In addition, the collection capability of the micropump was validated experimentally; the flow rate through the microchannel was further detected in real-time with the electrochemical sensor. The experimental maximum collection rate showed good consistency with the theoretical data. Our proposed device shows the potential for sweat collection and real-time monitoring of sweat rate, which is a promising candidate for being a wearable platform for real-time physiology and performance monitoring during exercise.
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Affiliation(s)
- Xiao-Ming Chen
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Yong-Jiang Li
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Dan Han
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Hui-Chao Zhu
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Chun-Dong Xue
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Hsiang-Chen Chui
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Tun Cao
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China.
| | - Kai-Rong Qin
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China.
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145
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Dai SN, Hou AJ, Zhao SM, Chen XM, Huang HT, Chen BH, Kong HL. Ginsenoside Rb1 Ameliorates Autophagy of Hypoxia Cardiomyocytes from Neonatal Rats via AMP-Activated Protein Kinase Pathway. Chin J Integr Med 2019; 25:521-528. [PMID: 30088211 DOI: 10.1007/s11655-018-3018-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To investigate whether ginsenoside-Rb1 (Gs-Rb1) improves the CoCl-induced autophagy of cardiomyocytes via upregulation of adenosine 5'-monophosphate-activated protein kinase (AMPK) pathway. METHODS Ventricles from 1- to 3-day-old Wistar rats were sequentially digested, separated and incubated in Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum for 3 days followed by synchronization. Neonatal rat cardiomyocytes were randomly divided into 7 groups: control group (normal level oxygen), hypoxia group (500 μmol/L CoCl2), Gs-Rb1 group (200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2), Ara A group (500 μmol/L Ara A + 500 μmol/L CoCl2), Ara A+ Gs-Rb1 group (500 μmol/L Ara A + 200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2), AICAR group [1 mmol/L 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) + 500 μmol/L CoCl2], and AICAR+Gs-Rb1 group (1 mmol/L AICAR + 200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2). Cells were treated for 12 h and cell viability was determined by methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay and cardiac troponin I (cTnI) levels were detected by enzyme-linked immunosorbent assay (ELISA). AMPK activity was assessed by 2',7'-dichlorofluorescein diacetate (DCFH-DA) ELISA assay. The protein expressions of Atg4B, Atg5, Atg6, Atg7, microtubule-associated protein 1A/1B-light chain 3 (LC3), P62, and active-cathepsin B were measured by Western blot. RESULTS Gs-Rb1 significantly improved the cell viability of hypoxia cardiomyocytes (P<0.01). However, the viability of hypoxia-treated cardiomyocytes was significantly inhibited by Ara A (P<0.01). Gs-Rb1 increased the AMPK activity of hypoxia-treated cardiomyocytes. The AMPK activity of hypoxia-treated cadiomyocytes was inhibited by Ara A (P<0.01) and was not affected by AICAR =0.983). Gs-Rb1 up-regulated Atg4B, Atg5, Beclin-1, Atg7, LC3B II, the LC3B II/I ratio and cathepsin B activity of hypoxia cardiomyocytes (P<0.05), each of these protein levels was significantly enhanced by Ara A (all P<0.01), but was not affected by AICAR (all P>0.05). Gs-Rb1 significantly down-regulated P62 levels of hypoxic cardiomyocytes (P<0.05). The P62 levels of hypoxic cardiomyocytes were inhibited by Ara A (P<0.05) and were not affected by AICAR (P=0.871). CONCLUSION Gs-Rb1 may improve the viability of hypoxia cardiomyocytes by ameliorating cell autophagy via the upregulation of AMPK pathway.
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Affiliation(s)
- Sheng-Nan Dai
- Department of Cardiology, the People's Hospital of China Medical University, the People's Hospital of Liaoning Province, Shenyang, 110016, China
| | - Ai-Jie Hou
- Department of Cardiology, the People's Hospital of China Medical University, the People's Hospital of Liaoning Province, Shenyang, 110016, China
| | - Shu-Mei Zhao
- International Education College, Shenyang Normal University, Shenyang, 110034, China
| | - Xiao-Ming Chen
- Department of Cardiology, the People's Hospital of China Medical University, the People's Hospital of Liaoning Province, Shenyang, 110016, China
| | - Hua-Ting Huang
- Department of Cardiology, the People's Hospital of China Medical University, the People's Hospital of Liaoning Province, Shenyang, 110016, China
| | - Bo-Han Chen
- Department of Cardiology, the First Affiliated Hospital of Dalian Medical University, Dalian, 116044, China
| | - Hong-Liang Kong
- Department of Cardiology, the People's Hospital of China Medical University, the People's Hospital of Liaoning Province, Shenyang, 110016, China.
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146
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Sun DQ, Zhang L, Zheng CF, Liu WY, Zheng KI, Chen XM, Zheng MH, Yuan WJ. Metabolic Acidosis in Critically Ill Cirrhotic Patients with Acute Kidney Injury. J Clin Transl Hepatol 2019; 7:112-121. [PMID: 31293910 PMCID: PMC6609841 DOI: 10.14218/jcth.2019.00013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/20/2019] [Accepted: 04/22/2019] [Indexed: 12/12/2022] Open
Abstract
Background and Aims: The metabolic acid-base disorders have a high incidence of acute kidney injury (AKI) in critically ill cirrhotic patients (CICPs). The aims of our study were to ascertain the composition of metabolic acidosis of CICPs with AKI and explore its relationship with hospital mortality. Methods: Three-hundred and eighty consecutive CICPs with AKI were eligible for the cohort study. Demographic, clinical and laboratory parameters were recorded and arterial acid-base state was analyzed by the Stewart and Gilfix methodology. Results: Net metabolic acidosis, lactic acidosis, acidosis owing to unmeasured anions, acidemia, and dilutional acidosis were less frequent in the non-survival group compared to the survival group of CICPs. The presence of acidemia, acidosis owing to unmeasured anions, and lactic acidosis were independently associated with increased risk of intensive care unit 30-day mortality, with hazard ratios of 2.11 (95% confidence interval (CI): 1.43-3.12), 3.38 (95% CI: 2.36-4.84), and 2.16 (95% CI: 1.47-3.35), respectively. After full adjustment for confounders, the relationship between acidosis owing to unmeasured anions with hospital mortality was still significant, with hazard ratio of 2.29 (95% CI: 1.22-4.30). Furthermore, arterial lactate concentration in combination with chronic liver failure-sequential organ failure assessment and BEUMA had the strongest ability to differentiate 30-day mortality (area under the receiver operating characteristic curve: 0.79, 95% CI: 0.74-0.83). Conclusions: CICPs with AKI exhibit a complex metabolic acidosis during intensive care unit admission. Lactic acidosis and BEUMA, novel markers of acid-base disorders, show promise in predicting mortality rate of CICPs with AKI.
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Affiliation(s)
- Dan-Qin Sun
- Department of Nephrology, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, China
- Department of Nephrology, Shanghai General Hospital of Nanjing Medical University, Shanghai, China
| | - Lai Zhang
- Department of Nephrology, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Chen-Fei Zheng
- Department of Nephrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wen-Yue Liu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kenneth I. Zheng
- NAFLD Research Center, Department of Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiao-Ming Chen
- Zhejiang Engineering Research Center of Intelligent Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ming-Hua Zheng
- NAFLD Research Center, Department of Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- *Correspondence to: Wei-Jie Yuan, Department of Nephrology, Shanghai General Hospital, Nanjing Medical University, Shanghai 200080, China. E-mail: ; Ming-Hua Zheng, Department of Hepatology, NAFLD Research Center, The First Affiliated Hospital of Wenzhou Medical University; No. 2 Fuxue Lane, Wenzhou 325000, China. E-mail:
| | - Wei-Jie Yuan
- Department of Nephrology, Shanghai General Hospital of Nanjing Medical University, Shanghai, China
- *Correspondence to: Wei-Jie Yuan, Department of Nephrology, Shanghai General Hospital, Nanjing Medical University, Shanghai 200080, China. E-mail: ; Ming-Hua Zheng, Department of Hepatology, NAFLD Research Center, The First Affiliated Hospital of Wenzhou Medical University; No. 2 Fuxue Lane, Wenzhou 325000, China. E-mail:
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147
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Liu L, Yuan CY, Wang MN, See DR, Zemetra RS, Chen XM. QTL analysis of durable stripe rust resistance in the North American winter wheat cultivar Skiles. Theor Appl Genet 2019; 132:1677-1691. [PMID: 30796480 DOI: 10.1007/s00122-019-03307-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 02/05/2019] [Indexed: 05/19/2023]
Abstract
This study determined the effects of growth stage and temperature on expression of high-temperature adult-plant resistance to stripe rust, mapped six QTL for durable resistance in winter wheat Skiles using a doubled haploid population, and selected breeding lines with different combinations of the QTL using marker-assisted selection. The winter wheat cultivar Skiles has a high level of high-temperature adult-plant (HTAP) resistance to stripe rust caused by Puccinia striiformis f. sp. tritici (Pst). The Skiles HTAP resistance was highly effective at the adult-plant stage even under low temperatures, but high temperatures induced earlier expression and increased levels of resistance. To map resistance genes, Skiles was crossed with the susceptible cultivar Avocet S and a doubled haploid (DH) population was developed. The DH population was tested in fields at Pullman, WA, in 2016, 2017 and 2018, Mount Vernon, WA, in 2017 and 2018 under natural infection, and an environmentally controlled greenhouse at the adult-plant stage with the currently predominant race PSTv-37. The population was genotyped using the 90 K Illumina iSelect wheat SNP chip and selected SSR markers on specific chromosomes. In total, 2526 polymorphic markers were used for QTL mapping and six QTL were detected. Two of the six QTL had major effects across all environments, with one mapped on chromosome 3BS, explaining up to 28.2% of the phenotypic variation and the other on chromosome 4BL, explaining up to 41.8%. Minor QTL were mapped on chromosomes 1BL, 5AL, 6B and 7DL. Genotyping 140 wheat cultivars from the US Pacific Northwest revealed high polymorphism of markers for five of the QTL, and five highly resistant lines with the five QTL were selected from Skiles-derived breeding lines using the markers. This study demonstrated that multiple QTL with mostly additive effects contributed to the high-level HTAP resistance in Skiles.
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Affiliation(s)
- L Liu
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA
| | - C Y Yuan
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA
- College of Life Sciences, Luoyang Normal University, Luoyang, 471934, Henan, People's Republic of China
| | - M N Wang
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA
| | - D R See
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA
- USDA-ARS, Wheat Health, Genetics and Quality Research Unit, Pullman, WA, 99164-6430, USA
| | - R S Zemetra
- Department of Crop and Soil Sciences, Oregon State University, Corvallis, OR, 97331-3002, USA
| | - X M Chen
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA.
- USDA-ARS, Wheat Health, Genetics and Quality Research Unit, Pullman, WA, 99164-6430, USA.
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148
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Wang Y, Huang NY, Zhang XW, He H, Huang RK, Ye ZM, Li Y, Zhou DD, Liao PQ, Chen XM, Zhang JP. Selective Aerobic Oxidation of a Metal-Organic Framework Boosts Thermodynamic and Kinetic Propylene/Propane Selectivity. Angew Chem Int Ed Engl 2019; 58:7692-7696. [PMID: 30913363 DOI: 10.1002/anie.201902209] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Indexed: 11/06/2022]
Abstract
Efficient adsorptive separation of propylene/propane (C3 H6 /C3 H8 ) is highly desired and challenging. Known strategies focus on either the thermodynamic or the kinetic mechanism. Here, we report an interesting reactivity of a metal-organic framework that improves thermodynamic and kinetic adsorption selectivity simultaneously. When the metal-organic framework is heated under oxygen flow, half of the soft methylene bridges of the organic ligands are selectively oxidized to form the more polar and rigid carbonyl bridges. Mixture breakthrough experiments showed drastic increase of C3 H6 /C3 H8 selectivity from 1.5 to 15. For comparison, the C3 H6 /C3 H8 selectivities of the best-performing metal-organic frameworks Co-MOF-74 and KAUST-7 were experimentally determined to be 6.5 and 12, respectively. Gas adsorption isotherms/kinetics, single-crystal X-ray diffraction, and computational simulations revealed that the oxidation gives additional guest recognition sites, which improve thermodynamic selectivity, and reduces the framework flexibility, which generate kinetic selectivity.
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Affiliation(s)
- Yu Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xue-Wen Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Hai He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Rui-Kang Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zi-Ming Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yang Li
- Instrumental Analysis and Research Center, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Dong-Dong Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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149
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Liu J, Gao Y, Tang Y, Wang D, Chen X, Yao Y, Guo Y. Genome-Wide Identification, Comprehensive Gene Feature, Evolution, and Expression Analysis of Plant Metal Tolerance Proteins in Tobacco Under Heavy Metal Toxicity. Front Genet 2019; 10:345. [PMID: 31105736 PMCID: PMC6491887 DOI: 10.3389/fgene.2019.00345] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 12/06/2018] [Accepted: 03/29/2019] [Indexed: 11/13/2022] Open
Abstract
Plant metal tolerance proteins (MTPs) comprise a family of membrane divalent cation transporters that play essential roles in plant mineral nutrition maintenance and heavy metal stresses resistance. However, the evolutionary relationships and biological functions of MTP family in tobacco remain unclear. In the present study, 26, 13, and 12 MTPs in three main Nicotiana species (N. tabacum, N. sylvestris, and N. tomentosiformis) were identified and designated, respectively. The phylogenetic relationships, gene structures, chromosome distributions, conserved motifs, and domains of NtMTPs were systematic analyzed. According to the phylogenetic features, 26 NtMTPs were classified into three major substrate-specific groups that were Zn-cation diffusion facilitators (CDFs), Zn/Fe-CDFs, and Mn-CDFs, and seven primary groups (1, 5, 6, 7, 8, 9, and 12). All of the NtMTPs contained a modified signature sequence and the cation_efflux domain, whereas some of them also harbored the ZT_dimer. Evolutionary analysis showed that NtMTP family of N. tabacum originated from its parental genome of N. sylvestris and N. tomentosiformis, and further underwent gene loss and expanded via one segmental duplication event. Moreover, the prediction of cis-acting elements (CREs) and the microRNA target sites of NtMTP genes suggested the diverse and complex regulatory mechanisms that control NtMTPs gene expression. Expression profile analysis derived from transcriptome data and quantitative real-time reverse transcription-PCR (qRT-PCR) analysis showed that the tissue expression patterns of NtMTPs in the same group were similar but varied among groups. Besides, under heavy metal toxicity, NtMTP genes exhibited various responses in either tobacco leaves or roots. 19 and 15 NtMTPs were found to response to at least one metal ion treatment in leaves and roots, respectively. In addition, NtMTP8.1, NtMTP8.4, and NtMTP11.1 exhibited Mn transport abilities in yeast cells. These results provided a perspective on the evolution of MTP genes in tobacco and were helpful for further functional characterization of NtMTP genes.
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Affiliation(s)
- Jikai Liu
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Yongfeng Gao
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Yunlai Tang
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Dan Wang
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - XiaoMing Chen
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Yinan Yao
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Yaoling Guo
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
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150
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Chen XM, Weng JY, Lai PL, Wang YL, Huang X, Geng SX, Guo LY, Huang T, Zeng LJ, Du X. [Artesunate attenuate chronic graft-versus-host disease by regulating Th17/Treg balance]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:63-68. [PMID: 30704231 PMCID: PMC7351699 DOI: 10.3760/cma.j.issn.0253-2727.2019.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
目的 探讨青蒿琥酯抗慢性移植物抗宿主病(cGVHD)的作用及可能机制。 方法 将B10D2小鼠的骨髓细胞和脾脏细胞混合悬液通过尾静脉输入近交系雌性BALB/c小鼠体内建立cGVHD模型,分别予青蒿琥酯(实验组)和丙酮腹腔(对照组)注射治疗。观察两组小鼠的cGVHD临床表现、生存时间和组织病理学改变;应用流式细胞术分析小鼠外周血和脾脏Th17和Treg细胞比例;免疫磁珠分选BALB/c小鼠脾脏CD4+T细胞,分别予丙酮和青蒿琥酯进行干预72 h,流式细胞术分析两组Th17/Treg细胞比例。 结果 ①实验组小鼠cGVHD临床症状较对照组明显减轻,生存时间延长[(55.71±6.99)d对(46.57±7.83)d,χ2=5.457,P=0.020]。②实验组小鼠皮肤及肺脏cGVHD病理损伤较轻。③与对照组比较,实验组小鼠外周血、脾脏Th17细胞比例均降低[(0.58±0.19)%对(1.51±0.18)%,t=7.233,P<0.001;(0.71±0.18)%对(1.48±0.38)%,t=3.653,P=0.011],Treg细胞比例增高[(8.40±0.23)%对(4.45±0.04)%,t=15.680,P<0.001;(10.48±0.48)%对(6.62±0.24)%,t=6.590,P=0.003],Th17/Treg细胞比值均下降(0.09±0.03对0.34±0.05,t=7.621,P=0.002;0.06±0.02对0.19±0.03,t=6.993,P=0.002)。④体外培养小鼠脾脏CD4+T细胞,青蒿琥酯干预组较对照组Th17细胞比例减低[(0.82±0.37)%对(3.39±1.22)%,t=4.044,P=0.007],Treg细胞比例明显增高[(34.63±1.29)%对(14.28±1.69)%,t=19.119,P<0.001],Th17/Treg细胞比值下降(0.24±0.09对0.02±0.01,t=4.780,P=0.003)。 结论 青蒿琥酯可通过减少Th17细胞及增加Treg细胞,恢复Th17/Treg平衡,减轻cGVHD的临床与病理学损伤,从而发挥抗cGVHD作用。
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Affiliation(s)
- X M Chen
- Department of Hematology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangdong Geriatrics Institute, Guangzhou 510080, China
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