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Sun P, Lin XM, Bera MK, Lin B, Ying D, Chang T, Bu W, Schlossman ML. Metastable precipitation and ion-extractant transport in liquid-liquid separations of trivalent elements. Proc Natl Acad Sci U S A 2024; 121:e2315584121. [PMID: 38507453 PMCID: PMC10990121 DOI: 10.1073/pnas.2315584121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/15/2024] [Indexed: 03/22/2024] Open
Abstract
The extractant-assisted transport of metal ions from aqueous to organic environments by liquid-liquid extraction has been widely used to separate and recover critical elements on an industrial scale. While current efforts focus on designing better extractants and optimizing process conditions, the mechanism that underlies ionic transport remains poorly understood. Here, we report a nonequilibrium process in the bulk aqueous phase that influences interfacial ion transport: the formation of metastable ion-extractant precipitates away from the liquid-liquid interface, separated from it by a depletion region without precipitates. Although the precipitate is soluble in the organic phase, the depletion region separates the two and ions are sequestered in a long-lived metastable state. Since precipitation removes extractants from the aqueous phase, even extractants that are sparingly soluble in water will continue to be withdrawn from the organic phase to feed the aqueous precipitation process. Solute concentrations in both phases and the aqueous pH influence the temporal evolution of the process and ionic partitioning between the precipitate and organic phase. Aqueous ion-extractant precipitation during liquid-liquid extraction provides a reaction path that can influence the extraction kinetics, which plays an important role in designing advanced processes to separate rare earths and other minerals.
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Affiliation(s)
- Pan Sun
- Department of Physics, University of Illinois at Chicago, Chicago, IL60607
- ChemMatCARS, Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Mrinal K. Bera
- ChemMatCARS, Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Binhua Lin
- ChemMatCARS, Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Dongchen Ying
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Tieyan Chang
- ChemMatCARS, Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Wei Bu
- ChemMatCARS, Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Mark L. Schlossman
- Department of Physics, University of Illinois at Chicago, Chicago, IL60607
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2
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Diroll BT, Cassidy JP, Harankahage D, Hua M, Lin XM, Zamkov M. Large two-photon cross sections and low-threshold multiphoton lasing of CdS/CdSe/CdS quantum shells. Nanoscale 2023; 15:18415-18422. [PMID: 37936481 DOI: 10.1039/d3nr04203k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Colloidal quantum shells are spherical semiconductor quantum wells, which have shown strong promise as optical materials, particularly in classes of experiments requiring multiple excitons. The two-photon properties of CdS/CdSe/CdS quantum shell samples are studied here to demonstrate large non-linear absorption cross-sections while retaining advantageous multiexciton physics conferred by the geometrical structure. The quantum shells have large two-phonon cross sections (0.4-7.9 × 106 GM), which highlights their potential use in upconversion imaging in which large per particle two-photon absorption is critical. Time-resolved measurements confirmed that the quantum shells have long biexciton lifetime (>10 ns in the largest core samples reported here) and large gain bandwidth (>300 meV). The combination of these attributes with large two-photon cross sections makes the CdS/CdSe/CdS quantum shells excellent gain media for two-photon excitation. With a broad gain bandwidth and long gain lifetime, quantum shell solids support multimodal amplified spontaneous emission from excitons, biexcitons, and higher excited states. Thresholds for amplified spontaneous emission and lasing, which are as low as 1 mJ cm-2, are comparable to, or lower than, the thresholds reported for other colloidal materials.
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Affiliation(s)
- Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, USA.
| | - James P Cassidy
- The Center for Photochemical Sciences and Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Dulanjan Harankahage
- The Center for Photochemical Sciences and Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Muchuan Hua
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, USA.
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, USA.
| | - Mikhail Zamkov
- The Center for Photochemical Sciences and Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
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3
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Lin Y, Zhou T, Rosenmann ND, Yu L, Gage TE, Banik S, Neogi A, Chan H, Lei A, Lin XM, Holt M, Arslan I, Wen J. Surface premelting of ice far below the triple point. Proc Natl Acad Sci U S A 2023; 120:e2304148120. [PMID: 37844213 PMCID: PMC10622896 DOI: 10.1073/pnas.2304148120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/28/2023] [Indexed: 10/18/2023] Open
Abstract
Premelting of ice, a quasi-liquid layer (QLL) at the surface below the melting temperature, was first postulated by Michael Faraday 160 y ago. Since then, it has been extensively studied theoretically and experimentally through many techniques. Existing work has been performed predominantly on hexagonal ice, at conditions close to the triple point. Whether the same phenomenon can persist at much lower pressure and temperature, where stacking disordered ice sublimates directly into water vapor, remains unclear. Herein, we report direct observations of surface premelting on ice nanocrystals below the sublimation temperature using transmission electron microscopy (TEM). Similar to what has been reported on hexagonal ice, a QLL is found at the solid-vapor interface. It preferentially decorates certain facets, and its thickness increases as the phase transition temperature is approached. In situ TEM reveals strong diffusion of the QLL, while electron energy loss spectroscopy confirms its amorphous nature. More significantly, the premelting observed in this work is thought to be related to the metastable low-density ultraviscous water, instead of ambient liquid water as in the case of hexagonal ice. This opens a route to understand premelting and grassy liquid state, far away from the normal water triple point.
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Affiliation(s)
- Yulin Lin
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan430072, People's Republic of China
| | - Tao Zhou
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | | | - Lei Yu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Thomas E. Gage
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Suvo Banik
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Arnab Neogi
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Henry Chan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan430072, People's Republic of China
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Martin Holt
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Ilke Arslan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL60439
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4
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He H, Lee J, Jiang Z, He Q, Dinic J, Chen W, Narayanan S, Lin XM. Kinetics of Shear-Induced Structural Ordering in Dense Colloids. J Phys Chem B 2023; 127:7408-7415. [PMID: 37560941 DOI: 10.1021/acs.jpcb.3c03290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
The macroscopic rheological response of a colloidal solution is highly correlated with the local microscopic structure, as revealed by an in situ Rheo-SAXS experiment with a high temporal resolution. Oscillatory shear can induce a strain-controlled ordering-to-disorder transition, resulting in a shear-thickening process that is different from the normal shear-thickening behavior that is driven by hydrodynamics and particle friction. We reveal that there is a complex time-dependent kinetics toward structural ordering under different applied strains. When the strain amplitude reaches a critical value that starts to induce disordering in the system, the pathway toward the dynamic equilibrium can also become highly non-monotonic. Within the same oscillatory cycle, there is a strong correlation of ordering with different phases of the oscillation, with the system oscillating between two dynamic metastable states.
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Affiliation(s)
- HongRui He
- Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Jonghun Lee
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Zhang Jiang
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Qiming He
- Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Jelena Dinic
- Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Wei Chen
- Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Suresh Narayanan
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
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Sun J, Lin XM, Lu DH, Wang M, Li K, Li SR, Li ZQ, Zhu CJ, Zhang ZM, Yan CY, Pan MH, Gong HB, Feng JC, Cao YF, Huang F, Sun WY, Kurihara H, Li YF, Duan WJ, Jiao GL, Zhang L, He RR. Midbrain dopamine oxidation links ubiquitination of glutathione peroxidase 4 to ferroptosis of dopaminergic neurons. J Clin Invest 2023; 133:e173110. [PMID: 37395283 DOI: 10.1172/jci173110] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023] Open
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6
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Sun J, Lin XM, Lu DH, Wang M, Li K, Li SR, Li ZQ, Zhu CJ, Zhang ZM, Yan CY, Pan MH, Gong HB, Feng JC, Cao YF, Huang F, Sun WY, Kurihara H, Li YF, Duan WJ, Jiao GL, Zhang L, He RR. Midbrain dopamine oxidation links ubiquitination of glutathione peroxidase 4 to ferroptosis of dopaminergic neurons. J Clin Invest 2023; 133:165228. [PMID: 37183824 PMCID: PMC10178840 DOI: 10.1172/jci165228] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 03/17/2023] [Indexed: 05/16/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the gradual loss of midbrain dopaminergic neurons in association with aggregation of α-synuclein. Oxidative damage has been widely implicated in this disease, though the mechanisms involved remain elusive. Here, we demonstrated that preferential accumulation of peroxidized phospholipids and loss of the antioxidant enzyme glutathione peroxidase 4 (GPX4) were responsible for vulnerability of midbrain dopaminergic neurons and progressive motor dysfunctions in a mouse model of PD. We also established a mechanism wherein iron-induced dopamine oxidation modified GPX4, thereby rendering it amenable to degradation via the ubiquitin-proteasome pathway. In conclusion, this study unraveled what we believe to be a novel pathway for dopaminergic neuron degeneration during PD pathogenesis, driven by dopamine-induced loss of antioxidant GPX4 activity.
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Affiliation(s)
- Jie Sun
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Xiao-Min Lin
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Dan-Hua Lu
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Meng Wang
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Kun Li
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Sheng-Rong Li
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Zheng-Qiu Li
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Cheng-Jun Zhu
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Zhi-Min Zhang
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Chang-Yu Yan
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Ming-Hai Pan
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Hai-Biao Gong
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Jing-Cheng Feng
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Yun-Feng Cao
- Shanghai Institute for Biomedical and Pharmaceutical Technologies, National Health Commission Key Laboratory of Reproduction Regulation, Shanghai, China
| | - Feng Huang
- School of Chinese Materia Medica and Yunnan Key Laboratory of Southern Medicinal Utilization, Yunnan University of Chinese Medicine, Kunming, China
| | - Wan-Yang Sun
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Hiroshi Kurihara
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Yi-Fang Li
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Wen-Jun Duan
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Gen-Long Jiao
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Li Zhang
- Key Laboratory of CNS Regeneration, Ministry of Education, Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, China
| | - Rong-Rong He
- The First Affiliated Hospital of Jinan University, Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of the Chinese Ministry of Education, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, and The Sixth Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
- School of Chinese Materia Medica and Yunnan Key Laboratory of Southern Medicinal Utilization, Yunnan University of Chinese Medicine, Kunming, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
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7
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Chong L, Gao G, Wen J, Li H, Xu H, Green Z, Sugar JD, Kropf AJ, Xu W, Lin XM, Xu H, Wang LW, Liu DJ. La- and Mn-doped cobalt spinel oxygen evolution catalyst for proton exchange membrane electrolysis. Science 2023; 380:609-616. [PMID: 37167381 DOI: 10.1126/science.ade1499] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Discovery of earth-abundant electrocatalysts to replace iridium for the oxygen evolution reaction (OER) in a proton exchange membrane water electrolyzer (PEMWE) represents a critical step in reducing the cost for green hydrogen production. We report a nanofibrous cobalt spinel catalyst codoped with lanthanum (La) and manganese (Mn) prepared from a zeolitic imidazolate framework embedded in electrospun polymer fiber. The catalyst demonstrated a low overpotential of 353 millivolts at 10 milliamperes per square centimeter and a low degradation for OER over 360 hours in acidic electrolyte. A PEMWE containing this catalyst at the anode demonstrated a current density of 2000 milliamperes per square centimeter at 2.47 volts (Nafion 115 membrane) or 4000 milliamperes per square centimeter at 3.00 volts (Nafion 212 membrane) and low degradation in an accelerated stress test.
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Affiliation(s)
- Lina Chong
- Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Guoping Gao
- Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Haixia Li
- Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Haiping Xu
- Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | | | | | - A Jeremy Kropf
- Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Wenqian Xu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Hui Xu
- Giner Inc., Auburndale, MA 02466, USA
| | - Lin-Wang Wang
- Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Di-Jia Liu
- Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA
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8
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Lin XM, Liu P, Chang QQ, Wang J, Wu SD. [Bilateral simultaneous non-arteritic anterior ischemic optic neuropathy: a case report]. Zhonghua Yan Ke Za Zhi 2023; 59:404-407. [PMID: 37151010 DOI: 10.3760/cma.j.cn112142-20221206-00626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A 62-year-old female patient presented with binocular vision loss for 10 days. Fundus photography and optical coherence tomography showed bilateral optic disc edema. Fundus fluorescein angiography showed hypofluorescence of the optic disc in the early stage, but irregular filling defects and segmental hyperfluorescence in the late stage. The diagnosis of bilateral simultaneous non-arteritic anterior ischemic optic neuropathy was made. The patient's visual acuity and visual field were improved after the use of megadose corticosteroids and comprehensive treatment. The prognosis of the patient was stable during the follow-up period.
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Affiliation(s)
- X M Lin
- Department of Neurology, Xi'an No.1 Hospital (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China
| | - P Liu
- Department of Neurology, Xi'an No.1 Hospital (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China
| | - Q Q Chang
- Department of Neurology, Xi'an No.1 Hospital (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China
| | - J Wang
- Department of Neurology, Xi'an No.1 Hospital (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China
| | - S D Wu
- Department of Neurology, Xi'an No.1 Hospital (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China
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9
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Lu QL, Lin XM, Liu P, Wu SD. [Left occipital dural arteriovenous fistulas presenting as right red eye: a case report]. Zhonghua Yan Ke Za Zhi 2023; 59:310-312. [PMID: 37012596 DOI: 10.3760/cma.j.cn112142-20220613-00288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
A 63-year-old male with a healthy history presented with a red and swollen right eye for 3 months. Neuro-ophthalmic examination showed slight bulging of the right eyeball, and multiple spiral conjunctival vessels were visible on the surface of the right conjunctiva, suggesting a right carotid cavernous fistula. Cerebral angiography showed left occipital dural arteriovenous fistulas. After endovascular embolization treatment, the patient's abnormal craniocerebral venous drainage and right eye syndrome resolved, and there was no recurrence during the one-month clinical follow-up after surgery.
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Affiliation(s)
- Q L Lu
- Department of Neuro-ophthalmology, The First Hospital of Xi'an (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovention and Translation of Neuroimmunological Diesease, Xi'an 710002, China
| | - X M Lin
- Department of Neuro-ophthalmology, The First Hospital of Xi'an (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovention and Translation of Neuroimmunological Diesease, Xi'an 710002, China
| | - P Liu
- Department of Neuro-ophthalmology, The First Hospital of Xi'an (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovention and Translation of Neuroimmunological Diesease, Xi'an 710002, China
| | - S D Wu
- Department of Neuro-ophthalmology, The First Hospital of Xi'an (The First Affiliated Hospital of Northwestern University), Xi'an Key Laboratory for Innovention and Translation of Neuroimmunological Diesease, Xi'an 710002, China
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10
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Jiang TT, Ji PH, He ZQ, Zhang YL, Deng Y, Chen X, Hong Y, Zhao DY, Zhang HW, Lin XM, Chen WQ. [Epidemic trend and control progress of taeniasis and cysticercosis in Henan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 34:547-551. [PMID: 36464252 DOI: 10.16250/j.32.1374.2021280] [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: 06/17/2023]
Abstract
Henan Province is one of the provinces where taeniasis and cysticercosis were historically highly prevalent, and Taenia solium is the dominant species of tapeworm. Following the concerted efforts since 1970s, the prevalence of human taeniasis and cysticercosis has been maintained at a low level in Henan Province, which facilitates the national taeniasis and cysticercosis elimination program in China. Following the implementation of the policy of aeniasis and cysticercosis elimination and classified guidance, a great success has been achieved in aeniasis and cysticercosis control in Henan Province. With continuous promotion of the opening-up policy and the Belt and Road Initiative, there are still challenges in taeniasis and cysticercosis control. This review summarizes the control progress of taeniasis and cysticercosis and proposes the challenges of taeniasis and cysticercosis control in Henan Province.
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Affiliation(s)
- T T Jiang
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - P H Ji
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - Z Q He
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - Y L Zhang
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - Y Deng
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - X Chen
- Fangcheng Center for Disease Control and Prevention, Henan Province, China
| | - Y Hong
- Fangcheng Center for Disease Control and Prevention, Henan Province, China
| | - D Y Zhao
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - H W Zhang
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - X M Lin
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
| | - W Q Chen
- Henan Provincial Center for Disease Control and Prevention, Henan Medical Key Laboratory for Pathogen and Vector of Parasites, Zhengzhou, Henan 450016, China
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Chen WQ, Jiang TT, Deng Y, Zhang YL, Chen X, Hong Y, Zhao DY, Lin XM, Zhang HW. [Effectiveness of training on Taenia solium taeniasis and cysticercosis control knowledge among medical professionals in disease-elimination pilot areas of Henan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 33:600-605. [PMID: 35128890 DOI: 10.16250/j.32.1374.2021214] [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: 06/14/2023]
Abstract
OBJECTIVE To investigate the changes in the awareness rate of Taenia solium taeniasis and cysticercosis control knowledge among medical professionals before and after training in Fangcheng County, a disease-elimination pilot area of Henan Province, so as to evaluate the effectiveness of the training. METHODS Three townships in Fangcheng County were randomly selected as the study townships, including Dushu, Bowang and Yangji townships, while Erlangmiao, Yanglou and Xiaoshidian townships in the county were randomly selected as the control townships. The grassroots medical professionals in the study townships were given once training on T. solium taeniasis and cysticercosis control knowledge each year from 2016 to 2020, while those in the control townships were given no interventions. All village-level doctors and a part of township-level public health professionals were sampled from the study and control townships as intervention and control groups. The baseline and final assessments of the awareness of T. solium taeniasis and cysticercosis control knowledge were performed using questionnaire survey in intervention and control groups in 2016 and 2020, and the awareness of T. solium taeniasis and cysticercosis control knowledge was compared between the two groups. RESULTS A total of 663 medical professionals were investigated in Fangcheng County from 2016 to 2020, including 474 participants in the intervention group and 189 participants in the control group. Results from the 2016 baseline survey showed that the awareness rate of T. solium taeniasis and cysticercosis control knowledge was 28.83% (47/163) among grassroots medical professionals in Fangcheng County, and there were no significant differences in the awareness between the intervention (32.47%, 25/77) and control groups (25.58%, 22/86) (χ2 = 0.939, P > 0.05), between men (30.50%, 43/141) and women (18.18%, 4/22) (χ2 = 1.406, P > 0.05) or between village- (31.39%, 43/137) and township-level medical professionals (15.38%, 4/26) (χ2 = 2.727, P > 0.05), while significant differences were found in the awareness rate of T. solium taeniasis and cysticercosis control knowledge among medical professionals in terms of education levels (χ2 = 8.190, P < 0.05) and duration of working experiences (χ2 = 12.617, P < 0.05), and the awareness rate of T. solium taeniasis and cysticercosis control knowledge increased with education levels among medical professionals (χ2 = 6.768, P < 0.05). Only 5.52% (9/163) of the medical professionals had a history of diagnosis and therapy of T. solium taeniasis or cysticercosis, and only 1.23% (2/163) received training on T. solium taeniasis and cysticercosis control knowledge during the past 5 years. Results from the 2020 questionnaire survey showed a higher awareness rate of T. solium taeniasis and cysticercosis control knowledge among medical professionals in the intervention group (93.55%, 116/124) than in the control group (46.60%, 48/103) (χ2 = 61.845, P < 0.05), and no significant differences were seen in the awareness rate of T. solium taeniasis and cysticercosis control knowledge among medical professionals in terms of gender, level of medical professionals, duration of working experiences or history of diagnosis/therapy of T. solium taeniasis and cysticercosis in the intervention group (χ2 = 1.089, 0.140, 0.081 and 0.453, all P values > 0.05), while there was a significant difference in the awareness rate among medical professionals with different education levels (χ2 = 36.338, P < 0.05). In addition, the awareness rate of T. solium taeniasis and cysticercosis control knowledge significantly increased among medical professionals with various chracteristics in 2020 than in 2016. CONCLUSIONS In the low-prevalence areas of T. solium taeniasis and cysticercosis, long-term and persistent training may improve the awareness of T. solium taeniasis and cysticercosis control knowledge among grassroots medical professionals, which facilitates the timely identification of T. solium taeniasis and cysticercosis and the establishment of a sensitive disease surveillance system.
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Affiliation(s)
- W Q Chen
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - T T Jiang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - Y Deng
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - Y L Zhang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - X Chen
- Fangcheng County Center for Disease Control and Prevention, Henan Province, China
| | - Y Hong
- Fangcheng County Center for Disease Control and Prevention, Henan Province, China
| | - D Y Zhao
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - X M Lin
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - H W Zhang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
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Zhao C, Gu MZ, Chen YY, Hu XW, Xu YB, Lin XM, Liu XN, Chen L, Chen GS, Liu YL. Catalytic divergent synthesis of imidazoles via reaction condition-dependent [3 + 2] cyclization of TosMIC. Org Biomol Chem 2022; 20:8623-8627. [DOI: 10.1039/d2ob01747d] [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: 11/06/2022]
Abstract
A base-catalyzed divergent synthesis of 1,4,5-trisubstituted or 1,4-disubstituted imidazoles through TosMIC-based [3 + 2] cyclization reaction has been developed.
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Affiliation(s)
- Cheng Zhao
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Man-Zhen Gu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Yi-Yuan Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Xiao-Wei Hu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Yi-Bing Xu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Xiao-Min Lin
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Xin-Ni Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Long Chen
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, China
| | - Guo-Shu Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
| | - Yun-Lin Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 51000, China
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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Deng Y, Jiang TT, Ji PH, Chen WQ, Zhang YL, Hong Y, Zhou RM, Yang CY, Hu YB, Lin XM, Zhao DY. [Effectiveness of health education interventions targeting taeniasis and cysticercosis among primary school students in disease-elimination pilot areas of Henan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:583-589. [PMID: 35128888 DOI: 10.16250/j.32.1374.2021215] [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: 06/14/2023]
Abstract
OBJECTIVE To compare the changes of knowledge, attitude and practice (KAP) related to taeniasis and cysticercosis among primary school students before and after health education interventions in disease-elimination pilot areas of Henan Province, so as to evaluate the effectiveness of health education interventions. METHODS A primary school was selected from each of Dushu, Bowang and Yangji townships, Fangcheng County, Henan Province from 2017 to 2019; then, 2 to 3 classes were randomly selected from grade 4 to 6 in each primary school, and finally, all students in these classes were enrolled as study subjects. A thematic health education lecture pertaining to taeniasis and cysticercosis was given once each year by means of "health education in class". The KAP towards taeniasis and cysticercosis was investigated among primary school students using selffilled structured questionnaires, and the changes of awareness of taeniasis and cysticercosis control knowledge and percentage of healthy behaviors formation were compared in primary school students among years and following various frequencies of health education interventions. RESULTS More than 10 thousand person-time primary school students received health education interventions during the period from 2017 to 2019, and a total of 1 223 person-time primary school students were investigated during the 3-year study period, including 633 person-time men and 590 person-time women and 88.55% of primary school students at ages of 10 to 12 years. The proportion of households raising pigs and using dry toiliets decreased from 5.30% (24/453) and 18.10% (82/453) in 2017 to 3.60% (13/361) and 11.08% (40/361) in 2019, respectively. The awareness rate of taeniasis and cysticercosis control knowledge increased significantly from 0.22% (1/453) in 2017 to 62.59% (256/409) in 2018 and 76.73% (277/361) in 2019 (χ2 = 567.60, P < 0.001), and the awareness rate was 85.25% (104/122) among primary school students attending the thematic special health education courses for successive three times. The awareness rates of taeniasis and cysticercosis control knowledge were 0.44% (1/225), 58.00% (116/200) and 71.63% (149/208) among male students and 0 (0/338), 66.99% (140/209) and 83.66% (128/153) among female students from 2017 to 2019, and there was a significant difference in the awareness of taeniasis and cysticercosis control knowledge between male and female students in 2019 (χ2 = 7.14, P = 0.01). On-site teaching by doctors was the students' favorite way to receive health education interventions (70.07%, 857/1 223), followed by watching health education videos (58.63%, 717/1 223) and seeing parasite specimens (48.9%, 598/1 223). The proportion of students' families who used cutting boards for raw and cooked food separately increased from 7.28% (33/453) in 2017 to 47.37% (171/361) in 2019, was 67.21% (82/122) among students attending the health education courses for successive three times. The proportion of students who frequently washed their hands before meals and after using toilet increased from 71.96% (324/453) in 2017 to 89.47% (319/361) in 2019 and was 95.90% (117/122) among students attending the health education courses for successive three times. In addition, the percentage of students washing hands frequently in families using dry toilets was significantly lower in those who did not use dry toilets (χ2 = 9.21, P = 0.002), and the proportion of students with a habit of eating raw or undercooked meat decreased significantly from 35.76% (162/453) in 2017 to 6.65% (24/361) in 2019 (χ2 = 69.11, P < 0.01). CONCLUSIONS The thematic health education activity of "health education in class" contributes greatly to the increase in the awareness of taeniasis and cysticercosis control knowledge and the rate of healthy behaviors formation among primary school students in diseaseelimination pilot areas of Henan Province.
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Affiliation(s)
- Y Deng
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - T T Jiang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - P H Ji
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - W Q Chen
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - Y L Zhang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - Y Hong
- Fangcheng County Center for Disease Control and Prevention, Henan Province, China
| | - R M Zhou
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - C Y Yang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - Y B Hu
- School of Public Health, Zhengzhou University, China
| | - X M Lin
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
| | - D Y Zhao
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
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Lin XM, Shi XX, Xiong L, Nie JH, Ye HS, Du JZ, Liu J. Construction of IL-13 Receptor α2-Targeting Resveratrol Nanoparticles against Glioblastoma Cells: Therapeutic Efficacy and Molecular Effects. Int J Mol Sci 2021; 22:ijms221910622. [PMID: 34638961 PMCID: PMC8508707 DOI: 10.3390/ijms221910622] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 12/20/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common lethal primary brain malignancy without reliable therapeutic drugs. IL-13Rα2 is frequently expressed in GBMs as a molecular marker. Resveratrol (Res) effectively inhibits GBM cell growth but has not been applied in vivo because of its low brain bioavailability when administered systemically. A sustained-release and GBM-targeting resveratrol form may overcome this therapeutic dilemma. To achieve this goal, encapsulated Res 30 ± 4.8 nm IL-13Rα2-targeting nanoparticles (Pep-PP@Res) were constructed. Ultraviolet spectrophotometry revealed prolonged Res release (about 25%) from Pep-PP@Res in 48 h and fluorescent confocal microscopy showed the prolonged intracellular Res retention time of Pep-PP@Res (>24 h) in comparison with that of free Res (<4 h) and PP@Res (<4 h). MTT and EdU cell proliferation assays showed stronger suppressive effects of Pep-PP@Res on rat C6 GBM cells than that of PP@Res (p = 0.024) and Res (p = 0.009) when used twice for 4 h/day. Pep-PP@Res had little toxic effect on normal rat brain cells. The in vivo anti-glioblastoma effects of Res can be distinctly improved in the form of Pep-PP@Res nanoparticles via activating JNK signaling, upregulating proapoptosis gene expression and, finally, resulting in extensive apoptosis. Pep-PP@Res with sustained release and GBM-targeting properties would be suitable for in vivo management of GBMs.
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Affiliation(s)
- Xiao-Min Lin
- Research Center, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-M.L.); (L.X.); (J.-H.N.); (H.-S.Y.)
| | - Xiao-Xiao Shi
- Institute of Life Sciences, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-X.S.); (J.-Z.D.)
| | - Le Xiong
- Research Center, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-M.L.); (L.X.); (J.-H.N.); (H.-S.Y.)
| | - Jun-Hua Nie
- Research Center, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-M.L.); (L.X.); (J.-H.N.); (H.-S.Y.)
| | - Hai-Shan Ye
- Research Center, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-M.L.); (L.X.); (J.-H.N.); (H.-S.Y.)
| | - Jin-Zi Du
- Institute of Life Sciences, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-X.S.); (J.-Z.D.)
| | - Jia Liu
- Research Center, South China University of Technology (SCUT) School of Medicine, Guangzhou 510006, China; (X.-M.L.); (L.X.); (J.-H.N.); (H.-S.Y.)
- Liaoning Laboratory of Cancer Genetics and Epigenetics, Dalian Medical University, Dalian 610044, China
- Correspondence: or ; Tel.: +20-3938-1176
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Zhao DY, Jiang TT, Chen WQ, Zhang YL, Deng Y, Xu BL, Zhang HW, Guo WS, Lin XM, Li P, Zhao YL, Yang CY, Qian D, Zhou RM, Liu Y, Li SH, Chen JS. [Prevalence of intestinal protozoan infections among rural children in Henan Province from 2014 to 2015]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:287-292. [PMID: 34286531 DOI: 10.16250/j.32.1374.2021074] [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: 11/27/2022]
Abstract
OBJECTIVE To investigate the prevalence and influencing factors of intestinal protozoan infections among rural children in Henan Province. METHODS A total of 104 survey sites were sampled from 35 counties (cities) in Henan Province using the stratified cluster sampling method to investigate the prevalence of intestinal protozoan infections among rural children from 2014 to 2015. The trophozoites and cysts of intestinal protozoa were identified using the iodine staining method and the physiological saline direct smear method (one detection for one stool sample). The prevalence of intestinal protozoan infections was compared among rural children with different characteristics, and the factors affecting intestinal protozoan infections among rural children were identified. RESULTS The overall prevalence of intestinal protozoan infections was 0.60% (40/6 771) among rural children in Henan Province from 2014 to 2015. There were 7 species of intestinal protozoa identified, and there was no species-specific prevalence (χ2 = 37.732, P = 0.000). No significant differences were found in prevalence of intestinal protozoan infections among rural children in terms of gender (χ2 = 1.793, P = 0.181), age (χ2 = 1.443, P = 0.486), occupation (χ2 = 0.219, P = 0.896) or ecological region (χ2 = 1.700, P = 0.637). In addition, terrain (χ2 = 2.311, P = 0.510), economic level (χ2 = 4.322, P = 0.229), source of drinking water (χ2 = 0.731, P = 0.393), eating raw vegetables (χ2 = 1.134, P = 0.287) and deworming (χ2 = 1.089, P = 0.297) had no remarkable effects on the prevalence of intestinal protozoan infections among rural children in Henan Province; however, the prevalence of intestinal protozoan infections varied significantly among rural children living in regions with different coverage of non-harmless toilets (χ2 = 10.050, P = 0.018). CONCLUSIONS The prevalence of intestinal protozoan infections is low among rural children in Henan Province.
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Affiliation(s)
- D Y Zhao
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - T T Jiang
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - W Q Chen
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - Y L Zhang
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - Y Deng
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - B L Xu
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - H W Zhang
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - W S Guo
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - X M Lin
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - P Li
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - Y L Zhao
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - C Y Yang
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - D Qian
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - R M Zhou
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - Y Liu
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - S H Li
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
| | - J S Chen
- Henan Provincial Center for Disease Control and Prevention; Henan Provincial Key Laboratory for Pathogenic Microorganisms of Infectious Diseases, Zhengzhou 450016, China
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Chen GQ, Sun D, Yang JM, Zhang S, Tian YE, Che ZP, Liu SM, Jiang J, Lin XM. Synthesis of sulfonate derivatives of carvacrol and thymol as anti-oomycetes agents. J Asian Nat Prod Res 2021; 23:692-702. [PMID: 32406756 DOI: 10.1080/10286020.2020.1758675] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Two series of sulfonate derivatives of carvacrol and thymol were synthesized and screened in vitro for their anti-oomycete activity against Phytophthora capsici, respectively. Among all of 32 derivatives, five compounds 3a, 4a, 4k, 3n, and 4n exhibited more potent anti-oomycete activity against P. capsici with EC50 values of 66.66, 62.94, 68.65, 61.24, and 52.91 mg/L, respectively. This suggested that introduction of different substitutions at the hydroxyl position of 1/2 could have remarkable effect on anti-oomycete activity. Overall, when R1 = isopropyl and R2 = methyl, the anti-oomycete activities of the compounds were higher than that of the corresponding compounds of R1 = methyl and R2 = isopropyl.[Formula: see text].
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Affiliation(s)
- Gen-Qiang Chen
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Di Sun
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jin-Ming Yang
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Song Zhang
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Yue-E Tian
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhi-Ping Che
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Sheng-Ming Liu
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jia Jiang
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Xiao-Min Lin
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
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Pan SP, Zheng XL, Zhang N, Lin XM, Li KJ, Xia XF, Zou CL, Zhang WY. A novel nomogram for predicting the risk of epilepsy occurrence after operative in gliomas patients without preoperative epilepsy history. Epilepsy Res 2021; 174:106641. [PMID: 33878595 DOI: 10.1016/j.eplepsyres.2021.106641] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 04/07/2021] [Accepted: 04/11/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Epilepsy is a common complication in glioma patients after undergoing brain tumor surgery combined with chemotherapy and/or radiotherapy. Whether antiepileptic drug prophylaxis could be used in these patients remains an open question. The purpose of this study was to produce a model for predicting the risk of epilepsy occurrence in such patients. METHODS The clinicopathologic data of glioma patients after tumor treatment were reviewed in this study. Univariate and multivariate logistic regression analyses were carried out to analyze the correlation between the clinicopathologic data and the risk of epilepsy occurrence. A nomogram was built according to the multivariate logistic regression model results. RESULTS A total of 219 patients with gliomas were reviewed. Univariate analyses revealed that age, WHO glioma classification, CD34, EGFR, Ki67, MGMT, P53 and VIM were significantly associated with the risk of epilepsy occurrence. Multivariate analyses revealed that age, WHO glioma classification, CD34, EGFR, MGMT, and VIM were predictors of risk of epilepsy occurrence. A nomogram of the risk of epilepsy occurrence was built based on statistically significant variables from the multivariate logistic regression analysis. The c-index of the nomogram was 0.755 (95 % confidence interval (CI), 0.742-0.769). SIGNIFICANCE This nomogram model provides reliable information about the risk of epilepsy occurrence for oncologists and neurological physicians.
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Affiliation(s)
- Si-Pei Pan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Xiao-Lu Zheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Nan Zhang
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Xiao-Min Lin
- Department of Neurology, The People's Hospital of Wencheng, WenZhou, China
| | - Ke-Jie Li
- Department of Radiotherapy, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Xiao-Fang Xia
- Department of Radiotherapy, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Chang-Lin Zou
- Department of Radiotherapy, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China
| | - Wen-Yi Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Wenzhou Medical University, WenZhou, China.
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Zhang RY, Wu CM, Hu XM, Lin XM, Hua YN, Chen JJ, Ding L, He X, Yang B, Ping BH, Zheng L, Wang Q. LncRNA AC105942.1 Downregulates hnRNPA2/B1 to Attenuate Vascular Smooth Muscle Cells Proliferation. DNA Cell Biol 2021; 40:652-661. [PMID: 33781092 DOI: 10.1089/dna.2020.6451] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The abnormal proliferation of vascular smooth muscle cells (VSMCs) is crucial in the atherosclerosis. Although long noncoding RNAs (lncRNAs) are implicated in a variety of diseases, their roles in activation of VSMCs proliferation and vascular disorder diseases are not well understood. In addition, heterogeneous nuclear ribonucleoprotein A2/B1 (hnRNPA2/B1) was reported to participate in lncRNAs-mediated function. Herein, we propose to investigate the role of lncRNA AC105942.1 and hnRNPA2/B1 in pathological VSMCs proliferation and the possible mechanisms in vitro. We have identified that lncRNA AC105942.1 was downregulated and hnRNPA2/B1 was upregulated in atherosclerotic plaques compared with normal artery tissues. Enhanced lncRNA AC105942.1 could noticeably inhibit Ang II-induced VSMCs proliferation. Further investigation suggested that lncRNA AC105942.1 could downregulate the expression of hnRNPA2/B1 and then regulate the level of CDK4 and p27. Taken together, our study indicated that lncRNA AC105942.1 downregulated hnRNPA2B1 to protect against the atherosclerosis by suppressing VSMCs proliferation. LncRNA AC105942.1 and hnRNPA2/B1 could represent potential therapeutic and diagnostic targets to atherosclerosis-related diseases.
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Affiliation(s)
- Ru-Yi Zhang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chang-Meng Wu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiu-Mei Hu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao-Min Lin
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yu-Neng Hua
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jun-Jiang Chen
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Li Ding
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xin He
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Biao Yang
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Bao-Hong Ping
- Hui Qiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Zheng
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qian Wang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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19
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Zhang RY, Luo SH, Lin XM, Hu XM, Zhang Y, Zhang XH, Wu CM, Zheng L, Wang Q. A novel electrochemical biosensor for exosomal microRNA-181 detection based on a catalytic hairpin assembly circuit. Anal Chim Acta 2021; 1157:338396. [PMID: 33832593 DOI: 10.1016/j.aca.2021.338396] [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: 01/12/2021] [Revised: 03/02/2021] [Accepted: 03/07/2021] [Indexed: 10/21/2022]
Abstract
Exosomal microRNAs (miRNAs) derived from different cells are proposed to be important noninvasive biomarkers for the diagnosis of cardiovascular disease. Recently, sensitive and reliable sensing of exosomal miRNAs has been garnered significant attention. Herein, a novel electrochemical biosensor based on a step polymerization catalytic hairpin assembly (SP-CHA) circuit is designed for exosomal miR-181 detection. Exosomal miR-181 as a trigger, induced SP-CHA process and generated a large number of T shaped concatemers with different length on the electrode surface. These ultra-concatemers could provide a much enhanced signal-to-noise ratio with the linear range from 10 fM to 100 nM and the detection limit of 7.94 fM. Furthermore, this assay was successfully applied to the detection of exosomal miR-181 in serum samples of normal healthy controls and patients with coronary heart disease (CHD) and the results were consistent with those analysis collected from qRT-PCR. The assembly demonstrated great performance in differentiating CHD patients from healthy controls (AUC:0.9867). Collectively, this sensing system possessed high stability and sensitivity with ease of operation and cost efficiency, leading to great potential for exosomal miRNAs detection in cardiovascular disease.
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Affiliation(s)
- Ru-Yi Zhang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Shi-Hua Luo
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Xiao-Min Lin
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Xiu-Mei Hu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Ye Zhang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Xiao-He Zhang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Chang-Meng Wu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China
| | - Lei Zheng
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China.
| | - Qian Wang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, PR China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, Guangdong Province, PR China.
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20
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Tian YE, Sun D, Han XX, Yang JM, Zhang S, Feng NN, Zhu LN, Xu ZY, Che ZP, Liu SM, Lin XM, Jiang J, Chen GQ. Synthesis, anti-oomycete activity, and SAR studies of paeonol derivatives. J Asian Nat Prod Res 2021; 23:138-149. [PMID: 32009450 DOI: 10.1080/10286020.2020.1718116] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 10/23/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
Three series of sulfonate derivatives of paeonol were synthesized and screened in vitro for their anti-oomycete activity against P. capsici, respectively. Among all the compounds, 4m displayed the best promising and pronounced anti-oomycete activity against P. capsici than zoxamide, with the EC50 values of 24.51 and 26.87 mg/L, respectively. The results show that acetyl and 4-OCH3 are two necessary groups. The existence of these two sites is closely related to the anti-oomycete activity. Relatively speaking, hydroxyl group is well tolerated, and the results showed that after modification of hydroxyl group with sulfonyl, the anti-oomycete activity was significantly increased. [Formula: see text].
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Affiliation(s)
- Yue-E Tian
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Di Sun
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Xiao-Xiao Han
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jin-Ming Yang
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Song Zhang
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Nan-Nan Feng
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Li-Na Zhu
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhong-Yuan Xu
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhi-Ping Che
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Sheng-Ming Liu
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Xiao-Min Lin
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jia Jiang
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Gen-Qiang Chen
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
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21
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Che ZP, Yang JM, Zhang S, Sun D, Tian YE, Liu SM, Lin XM, Jiang J, Chen GQ. Synthesis of novel 9 R/S-acyloxy derivatives of cinchonidine and cinchonine as insecticidal agents. J Asian Nat Prod Res 2021; 23:163-175. [PMID: 32091234 DOI: 10.1080/10286020.2020.1729136] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/30/2020] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
Endeavor to discover biorational natural products-based insecticides, two series (27) of novel 9R/S-acyloxy derivatives of cinchonidine and cinchonine were prepared and assessed for their insecticidal activity against Mythimna separata in vivo by the leaf-dipping method at 1 mg/mL. Among all the compounds, especially derivatives 6l and 6o exhibited the best insecticidal activity with final mortality rates of 75.0% and 71.4%, respectively. Overall, a free 9-hydroxyl group is not a prerequisite for insecticidal activity and C9-substitution is well tolerated; the configuration of C8/9 position is important for insecticidal activity, and 9S-configuration is optimal; 6'-OCH3 moiety is not necessary, removal of it is also acceptable. [Formula: see text].
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Affiliation(s)
- Zhi-Ping Che
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jin-Ming Yang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Song Zhang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Di Sun
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Yue-E Tian
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Sheng-Ming Liu
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Xiao-Min Lin
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Jia Jiang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
| | - Gen-Qiang Chen
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
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22
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Abstract
Porous polymer membranes are widely desired as catalyst supports, sensors, and active layers for separation membranes. We demonstrate that electron beam irradiation of freely suspended gold or Fe3O4 nanoparticle (NP) monolayer sheets followed by wet chemical etching is a high-fidelity strategy to template two-dimensional (2D) porous cross-linked hydrocarbon membranes. This approach, which relies on secondary electrons generated by the NP cores, can further be used to transform three-dimensional (3D) terraced gold NP supercrystals into 3D porous hydrocarbon membranes. We utilize electron tomography to show how the number of NP layers (monolayer to pentalayer) controls attenuation and scattering of the primary e-beam, which in turn determines ligand cross-link density and 3D pore structure. Electron tomography also reveals that many nanopores are vertically continuous because of preferential sintering of NPs. This work demonstrates new routes for the construction of functional nanoporous media.
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Affiliation(s)
- Grayson L Jackson
- James Franck Institute, University of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United States
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439 United States
| | - Jotham Austin
- Advanced Electron Microscopy Facility, University of Chicago, 929 E. 57th Street, Chicago, Illinois 60637 United States
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439 United States
| | - Heinrich M Jaeger
- James Franck Institute, University of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United States
- Department of Physics, University of Chicago, 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States
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23
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Xiong L, Lin XM, Nie JH, Ye HS, Liu J. Resveratrol and its Nanoparticle suppress Doxorubicin/Docetaxel-resistant anaplastic Thyroid Cancer Cells in vitro and in vivo. Nanotheranostics 2021; 5:143-154. [PMID: 33457193 PMCID: PMC7806457 DOI: 10.7150/ntno.53844] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/01/2020] [Indexed: 12/24/2022] Open
Abstract
Background: Docetaxel and doxorubicin combination has been widely used in anaplastic thyroid cancer/ATC treatment but often results in serious adverse effects and drug resistance. Resveratrol effectively inhibits ATC cell proliferation in vitro without affecting the corresponding normal cells, while its in vivo anti-ATC effects especially on the ones with docetaxel/doxorubicin-resistance have not been reported due to its low bioavailability. Nanoparticles with sustained-release and cancer-targeting features may overcome this therapeutic bottleneck. Methods: The resveratrol nanoparticles with sustained-release and IL-13Rα2-targeting capacities (Pep-1-PEG3.5k-PCL4k@Res) were prepared to improve the in vivo resveratrol bioavailability. Human THJ-16T ATC cell line was employed to establish nude mice subcutaneous transplantation model. The tumor-bearing mice were divided into four groups as Group-1, without treatment, Group-2, treated by 30 mg/kg free resveratrol, Group-3, treated by 30 mg/kg Pep-1-PEG3.5k-PCL4k@Res and Group-4, treated by 5 mg/kg docetaxel/5 mg/kg doxorubicin combination. TUNEL staining was used to detect the apoptotic cells in the tumor tissues. Docetaxel/doxorubicin resistant xenografts named as THJ-16T/R were isolated and subjected to 2D and 3D culture. The docetaxel/doxorubicin and resveratrol sensitivities of the original THJ-16T and THJ-16T/R cells were analyzed by multiple methods. Results: Docetaxel/doxorubicin and Pep-1-PEG3.5k-PCL4k@Res but not free resveratrol significantly delayed tumor growth (P < 0.01) and caused extensive apoptosis. The mice in docetaxel/doxorubicin-treated group suffered from weight loss (> 10%) and 2/3 of them died within 3 times of treatment and the chemotherapy was stop to avoid further animal loss. One week after drug withdrawal, the subcutaneous tumors regrew and the tumor volume increased 55.28% within 14 days. The cells isolated from the regrowing tumors (THJ-16T/R) were successfully cultured under 2D and 3D condition and underwent drug treatments. Compared with THJ-16T, the death rate of docetaxel/doxorubicin-treated THJ-16T/R population was lower (39.3% vs 18.0%), which remained almost unchanged in resveratrol-treated group (45.3% vs 49.3%). Conclusion: Resveratrol sustained-release targeting nanoparticles effectively inhibit in vivo ATC growth. Docetaxel/doxorubicin suppresses ATC xenografts but causes obvious side effects and secondary drug resistance that can be overcome by resveratrol.
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Affiliation(s)
- Le Xiong
- South China University of Technology School of Medicine, Guangzhou 510006, P.R. China
| | - Xiao-Min Lin
- South China University of Technology School of Medicine, Guangzhou 510006, P.R. China
| | - Jun-Hua Nie
- South China University of Technology School of Medicine, Guangzhou 510006, P.R. China
| | - Hai-Shan Ye
- South China University of Technology School of Medicine, Guangzhou 510006, P.R. China
| | - Jia Liu
- South China University of Technology School of Medicine, Guangzhou 510006, P.R. China
- Guangzhou First People's Hospital, South China University of Technology (SCUT) School of Medicine, Guangzhou 510180, China
- Liaoning Laboratory of Cancer Genomics, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
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24
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Chen GQ, Xia YF, Yang JM, Che ZP, Sun D, Li S, Tian YE, Liu SM, Jiang J, Lin XM. Controlled synthesis of N, N-dimethylarylsulfonamide derivatives as nematicidal agents. J Asian Nat Prod Res 2020; 22:1197-1206. [PMID: 31773971 DOI: 10.1080/10286020.2019.1694513] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Gramine can be intelligently and efficiently supplied with N, N-dimethylamino group and then reacted with the corresponding sulfonyl chlorides to synthesize N, N-dimethylarylsulfonamides. We herein designed and controlled synthesis of N, N-dimethylarylsulfonamide derivatives, and first reported the results of the nematicidal activity of 15 title compounds 3a-o against Meloidogyne incongnita in vitro, respectively. Among all of the title derivatives, compounds 3a, 3c, 3k, and 3o exhibited potent nematicidal activity with median lethal concentration (LC50) values ranging from 0.22 to 0.26 mg/L. Most noteworthy, N, N-dimethyl-4-methoxyphenylsulfonamide (3c) and N, N-dimethyl-8-quinolinesulfonamide (3o) showed the best promising and pronounced nematicidal activity, with LC50 values of 0.2381 and 0.2259 mg/L, respectively.
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Affiliation(s)
- Gen-Qiang Chen
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Yan-Fei Xia
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Jin-Ming Yang
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Zhi-Ping Che
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Di Sun
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Shen Li
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Yue-E Tian
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Sheng-Ming Liu
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Jia Jiang
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Xiao-Min Lin
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
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25
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Xiong L, Nie JH, Lin XM, Wu JB, Chen Z, Xu B, Liu J. Biological implications of PTEN upregulation and altered sodium/iodide symporter intracellular distribution in resveratrol-suppressed anaplastic thyroid cancer cells. J Cancer 2020; 11:6883-6891. [PMID: 33123279 PMCID: PMC7592015 DOI: 10.7150/jca.48180] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/10/2020] [Indexed: 12/18/2022] Open
Abstract
Objective: Anaplastic thyroid cancer/ATC is a highly aggressive malignancy with extremely poor prognosis. Resveratrol/Res promotes re-differentiation of cancer cells and exerts inhibitory effects on ATC cells. Sodium/iodide symporter/NIS and phosphate and tension homology deleted on chromsome ten/PTEN levels are positively correlated with the grade of thyroid cancer differentiation, while the impact of Res on them remain unknown. Materials and Methods: The patterns of NIS and PTEN expression and intracellular distribution in THJ-16T and THJ-21T ATC and Nthy-ori 3-1 normal thyroid cells and their relevance with Res-caused ATC suppression were investigated via multiple experimental methods. E-cadherin was cited as a re-differentiation biomarker of ATC cells. Results: MTT and EdU cell proliferation assays showed distinct growth suppression in ATC cells after Res treatment. TUNEL staining revealed extensive apoptosis of Res-treated THJ-16T and THJ-21T rather than Nthy-ori 3-1 cells. Western blotting, immunocytochemical/ICC and double-labeled immunofluorescent/IF staining showed increased PTEN levels accompanied with distinct NIS and PTEN nuclear co-translocation in Res-treated THJ-16T and THJ-21T cells. E-cadherin but not NIS appeared on the outer membrane. Conclusion: PTEN upregulation and the concurrent NIS and PTEN nuclear translocation in Res-suppressed ATC cells may indicate the better therapeutic outcome and would be a group of beneficial prognostic factors of ATCs.
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Affiliation(s)
- Le Xiong
- South China University of Technology School of Medicine, Guangzhou 510006, China
| | - Jun-Hua Nie
- South China University of Technology School of Medicine, Guangzhou 510006, China
| | - Xiao-Min Lin
- South China University of Technology School of Medicine, Guangzhou 510006, China
| | - Jian-Bin Wu
- Department of Oncology, First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, P.R. China
| | - Zhen Chen
- Department of Thyroid Surgery, Guangzhou First People's Hospital, South China University of Technology School of Medicine, Guangzhou 510180, China
| | - Bo Xu
- Department of Thyroid Surgery, Guangzhou First People's Hospital, South China University of Technology School of Medicine, Guangzhou 510180, China
| | - Jia Liu
- South China University of Technology School of Medicine, Guangzhou 510006, China.,Department of Thyroid Surgery, Guangzhou First People's Hospital, South China University of Technology School of Medicine, Guangzhou 510180, China
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26
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Che ZP, Yang JM, Shan XJ, Tian YE, Liu SM, Lin XM, Jiang J, Hu M, Chen GQ. Synthesis and insecticidal activity of sulfonate derivatives of sesamol against Mythimna separata in vivo. J Asian Nat Prod Res 2020; 22:678-688. [PMID: 31120307 DOI: 10.1080/10286020.2019.1616289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 04/30/2019] [Accepted: 05/05/2019] [Indexed: 06/09/2023]
Abstract
A series of sulfonate derivatives of sesamol were synthesized and evaluated for their insecticidal activity against a crop-threatening agricultural pest, the pre-third-instar larvae of Mythimna separata in vivo. Among all the target compounds, compounds 3b, 3g, 3h, and 3p exhibited more promising insecticidal activity than sesamol and toosendanin, and the final mortality rates (FMRs) of 3b, 3g, 3h, 3p, 1, and toosendanin were 60.7%/60.7%/67.9%/53.6%/32.1%/50.0%, respectively. Especially compound 3h exhibited the most potent insecticidal activity with FMRs of 67.9%. This suggested that a 4-fluorophenylsulfonyl group introduced at the hydroxyl position of sesamol was necessary for obtaining the most potent compound.[Formula: see text].
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Affiliation(s)
- Zhi-Ping Che
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Jin-Ming Yang
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Xi-Jie Shan
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Yue-E Tian
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Sheng-Ming Liu
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Xiao-Min Lin
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Jia Jiang
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Mei Hu
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
| | - Gen-Qiang Chen
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 4710003, China
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27
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Tian YE, Sun D, Yang JM, Che ZP, Liu SM, Lin XM, Jiang J, Chen GQ. Synthesis of sulfonate derivatives of maltol and their biological activity against Phytophthora capsici and Bursaphelenchus xylophilus in vitro. J Asian Nat Prod Res 2020; 22:578-587. [PMID: 31046458 DOI: 10.1080/10286020.2019.1608958] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 02/28/2019] [Revised: 04/11/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
Sixteen sulfonate derivatives of maltol were synthesized and screened in vitro for their anti-oomycete and nematicidal activity against Phytophthora capsici and Bursaphelenchus xylophilus, respectively. Among all the compounds, 3e, 3m, and 3p exhibited the most promising and pronounced anti-oomycete activity against P. capsici than zoxamide, and the EC50 values of 25.42, 18.44, 23.69, and 27.99 mg/L, respectively; compounds 3e, 3m, 3n, and 3p exhibited potent nematicidal activity with LC50 values ranging from 1 to 2 mg/L, especially 3m and 3n showed the best promising and pronounced nematicidal activity, with LC50 values of 1.1762 and 1.2384 mg/L, respectively. [Formula: see text].
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Affiliation(s)
- Yue-E Tian
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Di Sun
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Jin-Ming Yang
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Zhi-Ping Che
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Sheng-Ming Liu
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Xiao-Min Lin
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Jia Jiang
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
| | - Gen-Qiang Chen
- Laboratory of Pharmaceutical Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China
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Che ZP, Yang JM, Sun D, Tian YE, Liu SM, Lin XM, Jiang J, Chen GQ. Combinatorial Synthesis of A Series of Paeonol-based Phenylsulfonyl hydrazone Derivatives as Insecticidal Agents. Comb Chem High Throughput Screen 2020; 23:232-238. [DOI: 10.2174/1386207323666200127121129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/19/2019] [Accepted: 01/10/2020] [Indexed: 12/23/2022]
Abstract
Background:
Plant secondary metabolites play an essential role in the discovery of
novel insecticide due to their unique sources and potential target sites. Paeonol, the main phenolic
components in Moutan Cortex, is recognized as a safe and potent botanical insecticide to many
insects. The structural modification of paeonol in this study into phenylsulfonylhydrazone
derivatives is proved an effective approach for the development of novel insecticides, those
derivatives being more toxic than paeonol. However, there have been no reports on the insecticidal
activity of paeonol-based phenylsulfonylhydrazone derivatives in controlling Mythimna separata.
Methods:
We have been working to discover biorational natural products-based insecticides.
Twelve novel paeonol-based phenylsulfonylhydrazone derivatives have been successfully prepared
by structural modification of paeonol, and the insecticidal activity against M. separata by the leafdipping
method at the concentration of 1 mg/mL has been evaluated.
Results:
Insecticidal activity revealed that out of 12 title compounds, derivatives 5c and 5f
displayed the best against M. separate with the FMR both of 53.6% than toosendanin (FMR =
50.0%).
Conclusion:
The results suggested that for the paeonol-based phenylsulfonylhydrazone series
derivatives, the proper substituent of arylsulfonyl R at the hydroxyl position of paeonol was very
important for their insecticidal activity. These preliminary results will pave the way for further
modification of paeonol in the development of potential new insecticides.
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Affiliation(s)
- Zhi-Ping Che
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Jin-Ming Yang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Di Sun
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Yue-E Tian
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Sheng-Ming Liu
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Xiao-Min Lin
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Jia Jiang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Gen-Qiang Chen
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
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Li SY, Song LP, Ma YS, Lin XM. Predictors of catheter-related bladder discomfort after gynaecological surgery. BMC Anesthesiol 2020; 20:97. [PMID: 32345223 PMCID: PMC7187521 DOI: 10.1186/s12871-020-01018-6] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/19/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Urinary catheterization is universally used during surgery, and the incidence of postoperative catheter-related bladder discomfort (CRBD) is very high during recovery. We conducted this study to identify the incidence and predictors of postoperative CRBD after gynaecological surgery in the post-anesthesia care unit (PACU). METHODS This was a prospective observational study. Patients undergoing gynaecological surgery under general anesthesia with intra-operative urinary catheterization were enrolled. We collected the clinical data, incidence and severity of CRBD, and postoperative pain for the patients. Predictive factors of CRBD were analysed by univariate and multivariate analysis. RESULTS A total of 407 patients were included in this study. The incidence of CRBD after gynaecological surgery was 64.6% (mild CRBD: 22.8%; moderate CRBD: 34.2%; and severe CRBD: 7.6%). Univariate analysis showed that age, type of surgery, type of laparoscopic surgery, additional analgesics, and postoperative pain were influencing factors for CRBD. Based on multivariate logistic regression analysis, age ≥ 50 years, uterus-related laparoscopic surgery, and lack of additional analgesics were independent predictors of moderate or severe CRBD. CONCLUSIONS This observational study revealed that the incidence of CRBD after gynaecological surgery in PACU was very high. Age ≥ 50 years, uterus-related laparoscopic surgery, and lack of additional analgesics were independent predictors of CRBD. TRIAL REGISTRATION ChiCTR1800016390. Registered on 30 May 2018.
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Affiliation(s)
- S Y Li
- Department of Anesthesiology, West China Second Hospital of Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, No.20, Section 3, Renmin Nanlu, Chengdu, China
| | - L P Song
- Department of Anesthesiology, West China Second Hospital of Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, No.20, Section 3, Renmin Nanlu, Chengdu, China
| | - Y S Ma
- Department of Anesthesiology, West China Second Hospital of Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, No.20, Section 3, Renmin Nanlu, Chengdu, China.
| | - X M Lin
- Department of Anesthesiology, West China Second Hospital of Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, No.20, Section 3, Renmin Nanlu, Chengdu, China
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30
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Wan G, Zhang G, Lin XM. Toward Efficient Carbon and Water Cycles: Emerging Opportunities with Single-Site Catalysts Made of 3d Transition Metals. Adv Mater 2020; 32:e1905548. [PMID: 31782566 DOI: 10.1002/adma.201905548] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/07/2019] [Indexed: 06/10/2023]
Abstract
Advances in the chemical and electrochemical transformation of carbon and water are vital for delivering affordable and environmentally friendly energy sources and chemicals. Central to this challenge is the performance of materials. Traditionally, noble metal particles or metal complexes have been used as catalysts for many reactions. Recently, 3d transition-metal single-site catalysts (3dTM-SSCs) have emerged as potentially transformational candidates for the next-generation high-performance noble-metal-free catalysts. Designing catalysts at the molecular level can lead to a more efficient utilization of metal atoms and at the same time enhance catalytic performance under harsh reaction conditions. Despite this promise, several fundamental issues remain, in particular the structural evolution of 3dTM-SSCs during the synthesis, the molecular-level insights into the structure of the active sites, catalytic mechanisms, and the long-term cycling stability. Here, the material chemistries that facilitate the 3dTM-SSCs generation through a controlled pyrolytic synthesis are discussed, with focus on elucidating the underlying performance descriptors that can tune the catalytic properties in various critical reactions in carbon and water cycles. The current challenges and possible solutions for improving these novel catalytic materials are also highlighted.
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Affiliation(s)
- Gang Wan
- Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Guanghui Zhang
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA
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31
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Lian DW, Xu YF, Deng QH, Lin XM, Huang B, Xian SX, Huang P. Effect of patchouli alcohol on macrophage mediated Helicobacter pylori digestion based on intracellular urease inhibition. Phytomedicine 2019; 65:153097. [PMID: 31568921 DOI: 10.1016/j.phymed.2019.153097] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/18/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Helicobacter pylori infects almost half of the world population and is listed as a type I carcinoma factor since 1994. Pogostemon cablin (Blanco) Benth. (Labiatae) has been used to treat gastro-intestinal diseases for thousands of years in many east Asian countries, and the key ingredient, patchouli alcohol (PA), has been observed to exert anti-H. pylori and anti-urease activities. PURPOSE We investigated the effect of PA on H. pylori urease and its subsequent influence on macrophage phagosome maturation and function. METHODS In H. pylori experiment, the berthelot method and pH shock assay were adopted to evaluate the effect of PA on extracellular and intracellular H. pylori urease. And then, Q-PCR and Western blot were carried out to analyze the alterations in the expression of urease-related genes and proteins after PA treatment. In the H. pylori and macrophage cell (RAW264.7) co-culture experiment, the effects of PA on H. pylori-induced phagocytosis and intracellular killing of RAW264.7 were investigated using gentamycin protection assay, and the underlying mechanism was explored by immunofluorescence. RESULTS PA at 25 and 50 μM inhibited intracellular H. pylori urease activity but not isolated urease by down-regulating the gene expression levels of ureB, ureE, ureI and nixA and reducing the protein expression level of UreB, thereby inhibiting the acid resistance of H. pylori. PA also recovered the function of macrophage bacterial digestion, and prior treatment with ammonium chloride inhibited the efficacy of PA. CONCLUSION PA suppressed intracellular H. pylori urease function and maturation, which increased macrophage digestion ability.
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Affiliation(s)
- D W Lian
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, PR China; Lingnan Medical Research Center, Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, PR China; Postdoctoral Research Station of Guangzhou University of Chinese Medicine, Guangzhou 510006, PR China
| | - Y F Xu
- Shenzhen Traditional Chinese Medicine Hospital, The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518033, PR China; Postdoctoral Research Station of Guangzhou University of Chinese Medicine, Guangzhou 510006, PR China
| | - Q H Deng
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - X M Lin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - B Huang
- Shenzhen Traditional Chinese Medicine Hospital, The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518033, PR China
| | - S X Xian
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, PR China; Lingnan Medical Research Center, Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, PR China.
| | - P Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China.
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32
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Chen WQ, Li SH, Zhang YL, Deng Y, Xu BL, Zhang HW, Lin XM, Li P, Zhao YL, Yang CY, Qian D, Zhou RM, Liu Y, Chen JS. [Prevalence and influencing factors of intestinal parasitic diseases among rural children in Henan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 31:491-497. [PMID: 31713377 DOI: 10.16250/j.32.1374.2019053] [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: 11/27/2022]
Abstract
OBJECTIVE To understand the epidemic status and influencing factors of intestinal parasitic diseases among rural children in Henan Province. METHODS According to the Scheme for The National Survey on Current Status of Major Human Parasitic Diseases in China, the survey counties were selected based on the ecological zones and economic levels in Henan Province between 2014 and 2015. Then, the included counties were stratified according to the topography and economic levels. A township was randomly sampled from each stratum, and a village was randomly sampled from each township as the study site. Finally, a total of 104 study sites from 35 counties were enrolled for the survey of intestinal parasitic diseases in children. At least 250 fresh stool samples were collected from each study site for detection of intestinal helminth eggs with the Kato-Katz technique, for the identification of Necator americanus and Ancylostoma duodenale with the fecal culture method, and for the detection of intestinal protozoa trophozoite and cyst with the physiological saline smear and iodine staining techniques. In addition, the Enterobius vermicularis and tapeworm eggs were detected in children aged 3 to 6 years using the adhesive cellophane-tape perianal swab method. RESULTS The overall prevalence of intestinal parasitic infections was 3.21% (214/6 671) among rural children in Henan Province, and the prevalence of intestinal helminthes (2.62%, 175/6 671) was higher than that of intestinal protozoa (0.60%, 40/6 671). A total of 12 species of intestinal parasites were found, including 4 nematodes species, one trematode species, and 7 protozoa species, and the highest infection was seen in E. vermicularis (2.47%, 161/6 671). Among the four ecological zones in Henan Province, the greatest prevalence of intestinal parasitic infections was detected among children in the Qinba Mountain Ecological Zone (5.85%, 90/1 538). There was no gender-specific difference in the prevalence of intestinal parasitic infections in children (P > 0.05); however, there were age- (χ2 = 32.762, P < 0.05) and education level-specific differences in the prevalence of intestinal parasitic infections in children (χ2 = 67.507, P < 0.05), with the greatest prevalence of E. vermicularis infection seen in all species of intestinal parasites in children at all age groups. Multivariate non-conditional logistic regression analysis showed that high education level, high coverage of harmless toilets, drinking tap water and deworming were protective factors for intestinal parasitic infections in children in Henan Province. The overall prevalence of intestinal parasitic infections appeared a tendency towards a gradual decline among children in Henan Province as compared to the previous two surveys. CONCLUSIONS The overall prevalence of intestinal parasitic infections shows a tendency towards a remarkable decline among children in Henan Province. E. vermicularis infection should be given a priority for future parasitic disease control activities among rural children in Henan Province.
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Affiliation(s)
- W Q Chen
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - S H Li
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y L Zhang
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y Deng
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - B L Xu
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - H W Zhang
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - X M Lin
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - P Li
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y L Zhao
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - C Y Yang
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - D Qian
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - R M Zhou
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y Liu
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - J S Chen
- Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
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33
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Lin XM, Wu ZX, Lai JQ, Tao HL, Wei WH, Zhuang HL, Chen Y, Lian DW. [Mechanism of lysosome-mediated eradication activity of macrophages on specific anti-Helicobacter pylori of patchouli alcohol]. Zhongguo Zhong Yao Za Zhi 2019; 43:3171-3175. [PMID: 30200714 DOI: 10.19540/j.cnki.cjcmm.20180608.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Indexed: 11/18/2022]
Abstract
The aim of this paper is to investigate the effect of patchouli alcohol in enhancing Helicobater pylori's action in eradicating macrophages and its mechanism. H. pylori was co-cultured with macrophages at a ratio of MOI=100 in different concentrations of patchouli alcohol. The effect of patchouli alcohol in eradicating macrophages was detected by agar dilution method. The effect of patchouli alcohol on NO and myeloperoxidase (MPO) levels in macrophages were measured by H. pylori by biochemical methods. Patchouli alcohol effect on H. pylori-induced pro-inflammatory gene expression and protein secretion in macrophages were detected by RT-qPCR and ELISA method. The eradication of H. pylori has significantly enhanced, and the destabilization of lysosomes has been reversed. Meanwhile, patchouli alcohol has an effect in inhibiting pro-inflammation and oxidation. The mechanism of patchouli alcohol in eradicating H. pylori and resisting oxidative stress may be associated to the blocking of bacteria escape lysosome combination procedures.
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Affiliation(s)
- Xiao-Min Lin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Ze-Xin Wu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Jie-Qing Lai
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Hao-Lin Tao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Wen-Hui Wei
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Hui-Ling Zhuang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Yang Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Da-Wei Lian
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
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Chen SC, Ren JJ, Zhao HJ, Wang XL, Wang TH, Jin SD, Wang ZH, Li CY, Liu AR, Lin XM, Ahammed GJ. Trichoderma harzianum Improves Defense Against Fusarium oxysporum by Regulating ROS and RNS Metabolism, Redox Balance, and Energy Flow in Cucumber Roots. Phytopathology 2019; 109:972-982. [PMID: 30714883 DOI: 10.1094/phyto-09-18-0342-r] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Plant survival in the terrestrial ecosystem is influenced by both beneficial and harmful microbes. Trichoderma spp. are a group of filamentous fungi that promote plant growth and resistance to harmful microbes. Previously, we showed that the genus Trichoderma could effectively suppress Fusarium wilt in cucumber. However, the mechanisms that underlie the effects of the genus Trichoderma on plant defense have not been fully substantiated. Two essential metabolic pathways, such as the ascorbate (AsA)-glutathione (GSH) cycle and the oxidative pentose phosphate pathway (OPPP), have been shown to participate in plant tolerance to biotic stressors; nevertheless, the involvement of these pathways in Trichoderma-induced enhanced defense remains elusive. Here, we show that Trichoderma harzianum could alleviate oxidative and nitrostative stress by minimizing reactive oxygen species (ROS; hydrogen peroxide and superoxide) and reactive nitrogen species (nitric oxide [NO]) accumulation, respectively, under Fusarium oxysporum infection in cucumber roots. The genus Trichoderma enhanced antioxidant potential to counterbalance the overproduced ROS and attenuated the transcript and activity of NO synthase and nitrate reductase. The genus Trichoderma also stimulated S-nitrosylated glutathione reductase activity and reduced S-nitrosothiol and S-nitrosylated glutathione content. Furthermore, the genus Trichoderma enhanced AsA and GSH concentrations and activated their biosynthetic enzymes, γ-GCS and l-galactono-1,4-lactone dehydrogenase. Interestingly, the genus Trichoderma alleviated Fusarium-inhibited activity of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase, enzymes involved in the OPPP. Such positive regulation of the key enzymes indicates the adequate maintenance of the AsA-GSH pathway and the OPPP, which potentially contributed to improve redox balance, energy flow, and defense response. Our study advances the current knowledge of Trichoderma-induced enhanced defense against F. oxysporum in cucumber.
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Affiliation(s)
- Shuang-Chen Chen
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
- 2 Department of Plant Science, Agricultural and Animal Husbandry College, Tibet University, Linzhi 860000, People's Republic of China
| | - Jing-Jing Ren
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Hong-Jiao Zhao
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Xiang-Li Wang
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Tai-Hang Wang
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
- 2 Department of Plant Science, Agricultural and Animal Husbandry College, Tibet University, Linzhi 860000, People's Republic of China
| | - Sun-Da Jin
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Zhong-Hong Wang
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
- 2 Department of Plant Science, Agricultural and Animal Husbandry College, Tibet University, Linzhi 860000, People's Republic of China
| | - Chong-Yang Li
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Ai-Rong Liu
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Xiao-Min Lin
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Golam Jalal Ahammed
- 1 College of Forestry, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
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35
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Mitchell NP, Carey RL, Hannah J, Wang Y, Cortes Ruiz M, McBride SP, Lin XM, Jaeger HM. Conforming nanoparticle sheets to surfaces with Gaussian curvature. Soft Matter 2018; 14:9107-9117. [PMID: 30339166 DOI: 10.1039/c8sm01640b] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoparticle monolayer sheets are ultrathin inorganic-organic hybrid materials that combine highly controllable optical and electrical properties with mechanical flexibility and remarkable strength. Like other thin sheets, their low bending rigidity allows them to easily roll into or conform to cylindrical geometries. Nanoparticle monolayers not only can bend, but also cope with strain through local particle rearrangement and plastic deformation. This means that, unlike thin sheets such as paper or graphene, nanoparticle sheets can much more easily conform to surfaces with complex topography characterized by non-zero Gaussian curvature, like spherical caps or saddles. Here, we investigate the limits of nanoparticle monolayers' ability to conform to substrates with Gaussian curvature by stamping nanoparticle sheets onto lattices of larger polystyrene spheres. Tuning the local Gaussian curvature by increasing the size of the substrate spheres, we find that the stamped sheet morphology evolves through three characteristic stages: from full substrate coverage, where the sheet extends over the interstices in the lattice, to coverage in the form of caps that conform tightly to the top portion of each sphere and fracture at larger polar angles, to caps that exhibit radial folds. Through analysis of the nanoparticle positions, obtained from scanning electron micrographs, we extract the local strain tensor and track the onset of strain-induced dislocations in the particle arrangement. By considering the interplay of energies for elastic and plastic deformations and adhesion, we construct arguments that capture the observed changes in sheet morphology as Gaussian curvature is tuned over two orders of magnitude.
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Affiliation(s)
- Noah P Mitchell
- James Franck Institute and Department of Physics, University of Chicago, Chicago, IL, USA.
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36
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Wei L, Wang GQ, Sarah J, Cheng Q, Xie MR, Wang M, Xu ZP, Duan JL, Hou MX, Zhang YX, Zhang G, Tang W, Zhao SM, Lin ZS, Jia JJ, Niu ZL, Gao H, Yuan MH, Lin XM, Zhou JD, Luo Y, Linda F, Niloufar M, Wang Y, Jia J. [Efficacy and safety of ombitasvir/paritaprevir/ritonavir and dasabuvir combined with ribavirin in Asian adult patients with chronic HCV genotype 1b infection and compensated cirrhosis]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:353-358. [PMID: 29996203 DOI: 10.3760/cma.j.issn.1007-3418.2018.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of ombitasvir/paritaprevir/ritonavir (OBV/PTV/r) 25/150/100 mg once daily and dasabuvir (DSV) 250 mg twice daily combined with ribavirin in adult patients of Mainland China with chronic HCV genotype 1b infection and compensated cirrhosis. Methods: An open-label, multicenter, phase 3 clinical trial study was conducted in mainland China, Taiwan, and South Korea. Adult patients with compensated cirrhosis (Metavir score =F4) who were newly diagnosed and treated for hepatitis C virus genotype 1b infection with ombitasvir/paritaprevir/ritonavir and dasabuvir combined with ribavirin for 12 weeks were included. Assessed SVR rate of patients obtained at 12 and 24 weeks after drug withdrawal. Efficacy and safety were evaluated in patients who received at least one time study drugs. Results: A total of 63 patients from mainland China were enrolled, 62 of whom (98.4%) had a baseline Child-Pugh score of 5 points. The overall rate of SVR12 and SVR24 in patients was 100% (95% CI: 94.3% to 100.0%). Most of the adverse events that occurred were mild. The incidence of common (≥10%) adverse events and laboratory abnormalities included elevated total bilirubin (36.5%), weakness (19.0%), elevated unconjugated bilirubin (19.0%) and conjugated bilirubin (17.5%), and anemia (14.3%). Three cases (4.8%) of patients experienced Grade ≥ 3 adverse events that were considered by the investigators to be unrelated to the study drug. None patients had adverse events leading to premature drug withdrawal. Conclusion: Mainland Chinese patients with chronic HCV genotype 1b infection and compensated cirrhosis who were treated with OBV/PTV/r plus DSV combined with RBV for 12 weeks achieved 100 % SVR at 12 and 24 weeks after drug withdrawal. Tolerability and safety were good, and majority of adverse events were mild.
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Affiliation(s)
- L Wei
- Peking University People's Hospital, Beijing 100044, China
| | - G Q Wang
- Peking University First Hospital, Beijing 100034, China
| | - J Sarah
- AbbVie Inc., North Chicago 60064, IL, USA
| | - Q Cheng
- Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - M R Xie
- Rui Jin Hospital Shanghai, Jiao Tong University School of Medicine, Shanghai 200025, China
| | - M Wang
- 81 Hospital, The Chinese People's Liberation Army, Nanjing 210002, China
| | - Z P Xu
- The 8th Hospital of Guangzhou, Guangzhou 510000, China
| | - J L Duan
- Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - M X Hou
- Nan Fang Hospital, Guangzhou 510515, China
| | - Y X Zhang
- Shengyang 6th People's Hospital, Shenyang 110006, China
| | - G Zhang
- The 1st Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - W Tang
- West China School of Medicine, Chengdu 610041, China
| | - S M Zhao
- Nanjing 2nd Hospital, Nanjing 210028, China
| | - Z S Lin
- The 1st Hospital of Xi'an Jiaotong University, Xi'an 710065, China
| | - J J Jia
- Tangdu Hospital, Xi'an 710038, China
| | - Z L Niu
- The 1st Hospital of Jilin University, Changchun 130021, China
| | - H Gao
- The 3rd Hospital, Sun Yay-sen Hospital, Guangzhou 510630, China
| | - M H Yuan
- The 1st Hospital of Lanzhou University, Lanzhou 730000, China
| | - X M Lin
- The Infectious Hospital of Fuzhou, Fuzhou 350001, China
| | - J D Zhou
- Xijing Hospital of The 4th Military Medical University, Xi'an 710032, China
| | - Yan Luo
- AbbVie Inc., North Chicago 60064, IL, USA
| | | | | | - Ye Wang
- AbbVie. Shanghai 200041, China
| | - Jidong Jia
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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37
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Wen J, Wu K, Yang D, Tian J, Huang Z, Filatov AS, Lei A, Lin XM. Low-Pressure Flow Chemistry of CuAAC Click Reaction Catalyzed by Nanoporous AuCu Membrane. ACS Appl Mater Interfaces 2018; 10:25930-25935. [PMID: 30032615 DOI: 10.1021/acsami.8b06927] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Click chemistry has been widely used in bioconjugation, polymer synthesis, and the development of new anticancer drugs. Here, we report a nanoporous membrane made of AuCu alloy nanowires, which can effectively catalyze copper(I)-catalyzed 1,3-dipolar cycloaddition between azide and terminal alkyne (CuAAC) in flow condition with pressure less than one bar. Comparison studies of the nanowires before and after the reaction using X-ray photoelectron spectroscopy reveal Cu(0) and Cu(I) are main species that promote the reaction. This simple strategy can be used to synthesize a variety of compounds with triazole linkage and extended to gram level chemical production.
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Affiliation(s)
- Jiangwei Wen
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
- Center for Nanoscale Materials , Argonne National Laboratory , 9700 South Cass Avenue , Argonne , Illinois 60439 , United States
| | - Kun Wu
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
- Center for Nanoscale Materials , Argonne National Laboratory , 9700 South Cass Avenue , Argonne , Illinois 60439 , United States
| | - Dali Yang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Jun Tian
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
- Center for Nanoscale Materials , Argonne National Laboratory , 9700 South Cass Avenue , Argonne , Illinois 60439 , United States
| | - Zhiyuan Huang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Alexander S Filatov
- Department of Chemistry , The University of Chicago , 929 East 57th Street , Chicago , Illinois 60637 , United States
| | - Aiwen Lei
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - Xiao-Min Lin
- Center for Nanoscale Materials , Argonne National Laboratory , 9700 South Cass Avenue , Argonne , Illinois 60439 , United States
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38
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Peng P, Lin XM, Liu Y, Filatov AS, Li D, Stamenkovic VR, Yang D, Prakapenka VB, Lei A, Shevchenko EV. Binary Transition-Metal Oxide Hollow Nanoparticles for Oxygen Evolution Reaction. ACS Appl Mater Interfaces 2018; 10:24715-24724. [PMID: 29953206 DOI: 10.1021/acsami.8b06165] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Low-cost transition metal oxides are actively explored as alternative materials to precious metal-based electrocatalysts for the challenging multistep oxygen evolution reaction (OER). We utilized the Kirkendall effect allowing the formation of hollow polycrystalline, highly disordered nanoparticles (NPs) to synthesize highly active binary metal oxide OER electrocatalysts in alkali media. Two synthetic strategies were applied to achieve compositional control in binary transition metal oxide hollow NPs. The first strategy is capitalized on the oxidation of transition-metal NP seeds in the presence of other transition-metal cations. Oxidation of Fe NPs treated with Ni (+2) cations allowed the synthesis of hollow oxide NPs with a 1-4.7 Ni-to-Fe ratio via an oxidation-induced doping mechanism. Hollow Fe-Ni oxide NPs also reached a current density of 10 mA/cm2 at 0.30 V overpotential. The second strategy is based on the direct oxidation of iron-cobalt alloy NPs which allows the synthesis of hollow Fe xCo100- x-oxide NPs where x can be tuned in the range between 36 and 100. Hollow Fe36Co64-oxide NPs also revealed the current density of 10 mA/cm2 at 0.30 V overpotential in 0.1 M KOH.
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Affiliation(s)
- Pan Peng
- Institute of Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , Hubei , P. R. China
| | | | | | | | | | | | - Dali Yang
- Institute of Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , Hubei , P. R. China
| | | | - Aiwen Lei
- Institute of Advanced Studies (IAS), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , Hubei , P. R. China
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39
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Xu BL, Zhang HW, Deng Y, Chen ZL, Chen WQ, Lu DL, Zhang YL, Zhao YL, Lin XM, Huang Q, Yang CY, Liu Y, Zhou RM, Li P, Chen JS, He LJ, Qian D. [Stratified sampling survey of major human parasitic diseases in Henan province]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:322-328. [PMID: 29609247 DOI: 10.3760/cma.j.issn.0254-6450.2018.03.014] [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: 06/08/2023]
Abstract
Objective: To understand the prevalence of major human parasitic diseases and related factors in Henan province. Methods: This stratified sampling survey was carried out according to the requirement of national survey protocol of major human parasitic diseases, 2014-2015. The prevalence of soil-transmitted helminths infection, taeniasis and intestinal protozoiasis were surveyed in 104 sites selected from 35 counties (districts) and the prevalence of clonorchiasis was surveyed in 62 sites selected from 37 townships. In each survey spot, 250 persons were surveyed. A total of 26 866 persons and 15 893 persons were surveyed. Modified Kato-Katz thick smear was used to detect the eggs of intestinal helminthes. Tube fecal culture was used to identify the species of hookworm. The Enterobius eggs were detected in children aged 3 to 6 years by using adhesive tape. The cyst and trophozoite of intestinal protozoa were examined with physiological saline direct smear method and iodine stain method. Results: The overall infestation rate of intestinal parasites was2.02% in Henan, and the worm infection rate was higher than protozoa infection rate. Fourteen kinds of intestinal parasites were found, including nematode (5 species), trematode (2 species), and protozoan (7 species). The infection rate of Enterobius vermicularis was highest, and Qinba Mountain ecological area had the highest infestation rate of intestinal parasites in 4 ecological areas of Henan. There was no significant difference in intestinal parasite infection rate between males and females (χ(2)=3.630, P=0.057), and the differences in intestinal parasite infection rate among different age groups had significance (χ(2)=124.783, P=0.000 1). The infection rate reached the peak in age group ≤9 years and the major parasite was Enterobius vermicularis. Furthermore the overall human infection rate of parasite showed a downward trend with the increase of educational level of the people (χ(2)=70.969, P=0.000 1), the differences had significance (χ(2)=120.118, P=0.000 1). For different populations, the infection rate of intestinal parasites was highest among preschool children. The infection of intestinal helminth was mainly mild, only 2 severe cases were detected. The infection rate of Clonorchis sinensis in urban residents was only 0.006%. Logistic regression analysis showed that being preschool children (χ(2)=15.765, P=0.000 1) and drinking well water (χ(2)=45.589, P=0.000 1) were the risk factors for intestinal parasite infection, and annual income per capita of farmers was the protective factor against intestinal parasite infection. The infection rates of protozoa and intestinal parasites decreased sharply compared with the results of previous two surveys, and the rate of intestinal helminth infection also dropped sharply compared with the second survey. The numbers of protozoa, helminth and intestinal parasites detected in this survey were all less than the numbers found in the previous two surveys. Conclusions: Compared the results of three surveys in Henan, the infection rate of protozoa and intestinal parasites showed a downward trend. The prevention and treatment of Enterobius vermicularis infection in children should be the key point of parasitic disease control in the future.
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Affiliation(s)
- B L Xu
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou 450016, China
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40
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Tian J, Yang D, Wen J, Filatov AS, Liu Y, Lei A, Lin XM. A stable rhodium single-site catalyst encapsulated within dendritic mesoporous nanochannels. Nanoscale 2018; 10:1047-1055. [PMID: 29266147 DOI: 10.1039/c7nr06258c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Catalysis plays an essential role in the modern chemical industry. However, it still remains a great challenge to improve the efficiency of many heterogeneous catalysts based on a per metal atom basis. Single-site catalysts (SsCs) with isolated metal atoms/ions anchored to the supports are thus highly desirable, providing an innovative solution towards highly efficient usage of precious metal atoms in heterogeneous catalysts. Creating SsCs with high metal loading proves to be challenging because, without robust anchoring, atoms tend to diffuse to form large aggregates during catalytic reactions. We report a facile ligand exchange method to anchor a single-site Rh catalyst inside the individual channels of three-dimensional dendritic mesoporous silica nanospheres (MSNSs). The short porous channels inside MSNSs provide an easy access of reactants and the strong binding of the ligand prevents the aggregation of catalyst sites. The as-synthesized Rh1@MSNS-NH2 catalyst shows excellent activity, stability and reusability in the reduction of 4-nitrophenol. The same catalyst shows high regioselectivity in the hydrosilylation of terminal alkynes to yield α-vinylsilanes through the Markovnikov addition.
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Affiliation(s)
- Jun Tian
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, P.R. China.
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41
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Lee J, Jiang Z, Wang J, Sandy AR, Narayanan S, Lin XM. Unraveling the Role of Order-to-Disorder Transition in Shear Thickening Suspensions. Phys Rev Lett 2018; 120:028002. [PMID: 29376723 DOI: 10.1103/physrevlett.120.028002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 11/16/2017] [Indexed: 06/07/2023]
Abstract
Using high-resolution in situ small angle x-ray scattering in conjunction with oscillatory shear on highly monodisperse silica suspensions, we demonstrate that an order-to-disorder transition leads to a dynamic shear thickening in a lower stress regime than the standard steady shear thickening. We show that the order-to-disorder transition is controlled by strain, which is distinguishably different from steady shear thickening, which is a stress-related phenomenon. The appearance of this two-step shear thinning and thickening transition is also influenced by the particle size, monodispersity, and measurement conditions (i.e., oscillatory shear versus steady shear). Our results show definitively that the order-to-disorder transition-induced thickening is completely unrelated to the mechanism that drives steady shear thickening.
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Affiliation(s)
- Jonghun Lee
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Zhang Jiang
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Jin Wang
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Alec R Sandy
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Suresh Narayanan
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
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42
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Kirschner MS, Ding W, Li Y, Chapman CT, Lei A, Lin XM, Chen LX, Schatz GC, Schaller RD. Phonon-Driven Oscillatory Plasmonic Excitonic Nanomaterials. Nano Lett 2018; 18:442-448. [PMID: 29191022 DOI: 10.1021/acs.nanolett.7b04354] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate that coherent acoustic phonons derived from plasmonic nanoparticles can modulate electronic interactions with proximal excitonic molecular species. A series of gold bipyramids with systematically varied aspect ratios and corresponding localized surface plasmon resonance energies, functionalized with a J-aggregated thiacarbocyanine dye molecule, produces two hybridized states that exhibit clear anticrossing behavior with a Rabi splitting energy of 120 meV. In metal nanoparticles, photoexcitation generates coherent acoustic phonons that cause oscillations in the plasmon resonance energy. In the coupled system, these photogenerated oscillations alter the metal nanoparticle's energetic contribution to the hybridized system and, as a result, change the coupling between the plasmon and exciton. We demonstrate that such modulations in the hybridization are consistent across a wide range of bipyramid ensembles. We also use finite-difference time domain calculations to develop a simple model describing this behavior. Such oscillatory plasmonic-excitonic nanomaterials offer a route to manipulate and dynamically tune the interactions of plasmonic/excitonic systems and unlock a range of potential applications.
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Affiliation(s)
- Matthew S Kirschner
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Wendu Ding
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Yuxiu Li
- Center for Nanoscale Materials, Argonne National Laboratory , Lemont, Illinois 60439, United States
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan 430072, People's Republic of China
| | - Craig T Chapman
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan 430072, People's Republic of China
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - Lin X Chen
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
- Chemical Science and Engineering, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - George C Schatz
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Richard D Schaller
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
- Center for Nanoscale Materials, Argonne National Laboratory , Lemont, Illinois 60439, United States
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43
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Wang Y, Chan H, Narayanan B, McBride SP, Sankaranarayanan SKRS, Lin XM, Jaeger HM. Thermomechanical Response of Self-Assembled Nanoparticle Membranes. ACS Nano 2017; 11:8026-8033. [PMID: 28715195 DOI: 10.1021/acsnano.7b02676] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Monolayers composed of colloidal nanoparticles, with a thickness of less than 10 nm, have remarkable mechanical moduli and can suspend over micrometer-sized holes to form free-standing membranes. In this paper, we discuss experiments and coarse-grained molecular dynamics simulations characterizing the thermomechanical properties of these self-assembled nanoparticle membranes. These membranes remain strong and resilient up to temperatures much higher than previous simulation predictions and exhibit an unexpected hysteretic behavior during the first heating-cooling cycle. We show this hysteretic behavior can be explained by an asymmetric ligand configuration from the self-assembly process and can be controlled by changing the ligand coverage or cross-linking the ligand molecules. Finally, we show the screening effect of water molecules on the ligand interactions can strongly affect the moduli and thermomechanical behavior.
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Affiliation(s)
- Yifan Wang
- Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637 United States
| | - Henry Chan
- Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Badri Narayanan
- Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Sean P McBride
- Department of Physics, Marshall University , One John Marshall Drive, Huntington, West Virginia 25755, United States
| | | | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Heinrich M Jaeger
- Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637 United States
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44
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Wen J, Shi W, Zhang F, Liu D, Tang S, Wang H, Lin XM, Lei A. Electrooxidative Tandem Cyclization of Activated Alkynes with Sulfinic Acids To Access Sulfonated Indenones. Org Lett 2017; 19:3131-3134. [DOI: 10.1021/acs.orglett.7b01256] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiangwei Wen
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60439, United States
| | - Wenyan Shi
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
| | - Fan Zhang
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
| | - Dong Liu
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
| | - Shan Tang
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
| | - Huamin Wang
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
| | - Xiao-Min Lin
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60439, United States
| | - Aiwen Lei
- The
Institute for Advanced Studies (IAS), College of Chemistry and Molecular
Sciences, Wuhan University, Wuhan 430072, Hubei, China
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45
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Abstract
We demonstrate how gold nanoparticle monolayers can be curled up into hollow scrolls that make it possible to extract both bending and stretching moduli from indentation by atomic force microscopy. We find a bending modulus that is 2 orders of magnitude larger than predicted by standard continuum elasticity, an enhancement we associate with nonlocal microstructural constraints. This finding opens up new opportunities for independent control of resistance to bending and stretching at the nanoscale.
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Affiliation(s)
- Yifan Wang
- Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States
| | - Jianhui Liao
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing, 100871, China
| | - Sean P McBride
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States
| | - Efi Efrati
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States
- Department of Physics of Complex Systems, Weizmann Institude of Science , Rehovot, 76100, Israel
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Heinrich M Jaeger
- Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States
- James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States
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46
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Lin XM, Sun Y, Shevchenko EV, Sankaranarayanan SKRS, John D, Fedin I, Bresme F, Möhwald H, Moriarty P, Sorensen CM, Law BM. Highlights of the Faraday Discussion on Nanoparticle Synthesis and Assembly, Argonne, USA, April 2015. Chem Commun (Camb) 2015; 51:13725-30. [PMID: 26281789 DOI: 10.1039/c5cc90369f] [Citation(s) in RCA: 2] [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: 11/21/2022]
Affiliation(s)
- Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA.
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47
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Jiang Z, He J, Deshmukh SA, Kanjanaboos P, Kamath G, Wang Y, Sankaranarayanan SKRS, Wang J, Jaeger HM, Lin XM. Subnanometre ligand-shell asymmetry leads to Janus-like nanoparticle membranes. Nat Mater 2015; 14:912-917. [PMID: 26053763 DOI: 10.1038/nmat4321] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
Self-assembly of nanoparticles at fluid interfaces has emerged as a simple yet efficient way to create two-dimensional membranes with tunable properties. In these membranes, inorganic nanoparticles are coated with a shell of organic ligands that interlock as spacers and provide tensile strength. Although curvature due to gradients in lipid-bilayer composition and protein scaffolding is a key feature of many biological membranes, creating gradients in nanoparticle membranes has been difficult. Here, we show by X-ray scattering that nanoparticle membranes formed at air/water interfaces exhibit a small but significant ∼6 Å difference in average ligand-shell thickness between their two sides. This affects surface-enhanced Raman scattering and can be used to fold detached free-standing membranes into tubes by exposure to electron beams. Molecular dynamics simulations elucidate the roles of ligand coverage and mobility in producing and maintaining this asymmetry. Understanding this Janus-like membrane asymmetry opens up new avenues for designing nanoparticle superstructures.
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Affiliation(s)
- Zhang Jiang
- Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue Argonne, Illinois 60439, USA
| | - Jinbo He
- Department of Physics and James Franck Institute, The University of Chicago, 929 East 57th Street Chicago, Illinois 60637, USA
| | - Sanket A Deshmukh
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue Argonne, Illinois 60439, USA
| | - Pongsakorn Kanjanaboos
- Department of Physics and James Franck Institute, The University of Chicago, 929 East 57th Street Chicago, Illinois 60637, USA
| | - Ganesh Kamath
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue Argonne, Illinois 60439, USA
- Department of Chemistry, University of Missouri, 601 South College Avenue Columbia, Missouri 65211, USA
| | - Yifan Wang
- Department of Physics and James Franck Institute, The University of Chicago, 929 East 57th Street Chicago, Illinois 60637, USA
| | | | - Jin Wang
- Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue Argonne, Illinois 60439, USA
| | - Heinrich M Jaeger
- Department of Physics and James Franck Institute, The University of Chicago, 929 East 57th Street Chicago, Illinois 60637, USA
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue Argonne, Illinois 60439, USA
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48
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Reguera J, Scarabelli L, Petit C, Siramdas R, Wolf H, Chanana M, Liu X, Martin M, Tebbe M, Lin XM, Isa L, Moehwald H, Schurtenberger P, Velev O, Liu Y, Abdel Fattah AR, Bumajdad A, Ganeshan D, Faivre D, Bresme F, Sorensen C, Guimera Coll P, Ghosh S, Fery A, El Haddassi F, Salerno KM, Graf C, Cardinal MF, Schiffrin D, Li Z, Shevchenko E, Teranishi T, Shubiao Z, Talapin D, Alivisatos AP, Duguet E, Philipse A, Bianchi E, Latsuzbaia R. New routes to control nanoparticle synthesis: general discussion. Faraday Discuss 2015; 181:147-79. [PMID: 26156139 DOI: 10.1039/c5fd90050f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Reguera J, Malachosky E, Martin M, Tebbe M, Law B, Isa L, Moehwald H, Liu Y, Bresme F, Ganeshan D, Sorensen C, Ghosh S, Fery A, Král P, Widmer-Cooper A, Graf C, Gallego A, Schiffrin D, Korgel B, Okram G, Sankaranarayanan S, Wang Y, Teranishi T, Salerno KM, McBride S, Lin XM. Properties of self-assembled nanostructures: general discussion. Faraday Discuss 2015; 181:365-81. [PMID: 26149423 DOI: 10.1039/c5fd90042e] [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: 11/21/2022]
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50
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Liu Y, Xie DY, Lin XM, Chi C. Case Report Unicentric Castleman disease located in the anterior mediastinum misdiagnosed as invasive thymoma: a case report. Genet Mol Res 2015; 14:6674-8. [PMID: 26125875 DOI: 10.4238/2015.june.18.10] [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: 11/03/2022]
Abstract
Castleman disease is a rare lymphoproliferative disorder of unknown etiology. The localized form, which usually presents as a slow-growing mass, is most commonly located in the mediastinum. Invasion of the vena anonyma by a mass has rarely been reported. We herein describe a case of initially misdiagnosed invasive thymoma in a 72-year-old woman, but postoperatively proven to have anterior mediastinal Castleman disease with invasion of the vena anonyma.
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Affiliation(s)
- Y Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - D Y Xie
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - X M Lin
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - C Chi
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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