1
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Li RJ, de Montmollin J, Fadaei-Tirani F, Scopelliti R, Severin K. Construction of Pd-based coordination cages with three geometrically distinct ligands. Dalton Trans 2023; 52:6451-6456. [PMID: 37092605 DOI: 10.1039/d3dt00248a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Three different dipyridyl ligands were combined with [Pd(CH3CN)4](BF4)2 to give mixtures of homo- and/or heteroleptic coordination cages. The three ligands were chosen so that one ligand shows a parallel orientation of the coordinate vectors, the second ligand a bent angle of 60°, and the third ligand a bent angle of 120°. We have identified ligand mixtures that give rise to integrative self-sorting, and we have characterized a heterotrileptic [Pd4L2L'2L''4]8+ cage by single crystal X-ray crystallography. The structural flexibility of ligands with alkynyl spacers was found to be of importance for the formation of heteroleptic complexes.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Jean de Montmollin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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2
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Li RJ, Tarzia A, Posligua V, Jelfs KE, Sanchez N, Marcus A, Baksi A, Clever GH, Fadaei-Tirani F, Severin K. Orientational self-sorting in cuboctahedral Pd cages. Chem Sci 2022; 13:11912-11917. [PMID: 36320919 PMCID: PMC9580501 DOI: 10.1039/d2sc03856k] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/29/2022] [Indexed: 12/01/2023] Open
Abstract
Cuboctahedral coordination cages of the general formula [Pd12L24]24+ (L = low-symmetry ligand) were analyzed theoretically and experimentally. With 350 696 potential isomers, the structural space of these assemblies is vast. Orientational self-sorting refers to the preferential formation of particular isomers within the pool of potential structures. Geometric and computational analyses predict the preferred formation of cages with a cis arrangement at the metal centers. This prediction was corroborated experimentally by synthesizing a [Pd12L24]24+ cage with a bridging 3-(4-(pyridin-4-yl)phenyl)pyridine ligand. A crystallographic analysis of this assembly showed exclusive cis coordination of the 3- and the 4-pyridyl donor groups at the Pd2+ ions.
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Affiliation(s)
- Ru-Jin Li
- Institut of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Andrew Tarzia
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus, 82 Wood Lane London W12 0BZ UK
| | - Victor Posligua
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus, 82 Wood Lane London W12 0BZ UK
| | - Kim E Jelfs
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus, 82 Wood Lane London W12 0BZ UK
| | | | - Adam Marcus
- Institut of Mathematics, EPFL Lausanne 1015 Switzerland
| | - Ananya Baksi
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, Universität Dortmund Dortmund 44227 Germany
| | - Guido H Clever
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, Universität Dortmund Dortmund 44227 Germany
| | - Farzaneh Fadaei-Tirani
- Institut of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Kay Severin
- Institut of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL) Lausanne 1015 Switzerland
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3
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Artmann K, Li RJ, Juber S, Benchimol E, Schäfer LV, Clever GH, Nuernberger P. Steering the Ultrafast Opening and Closure Dynamics of a Photochromic Coordination Cage by Guest Molecules. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kevin Artmann
- Universitat Regensburg Institut für Physikalische und Theoretische Chemie GERMANY
| | - Ru-Jin Li
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | - Selina Juber
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Chemistry GERMANY
| | - Elie Benchimol
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | | | - Guido H Clever
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | - Patrick Nuernberger
- Universitat Regensburg Institut für Physikalische und Theoretische Chemie Universitätsstraße 31 93053 Regensburg GERMANY
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4
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Artmann K, Li RJ, Juber S, Benchimol E, Schäfer LV, Clever GH, Nuernberger P. Steering the Ultrafast Opening and Closure Dynamics of a Photochromic Coordination Cage by Guest Molecules. Angew Chem Int Ed Engl 2022; 61:e202212112. [PMID: 36112055 PMCID: PMC10092689 DOI: 10.1002/anie.202212112] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 11/08/2022]
Abstract
Photochemical studies on supramolecular hosts that can encapsulate small guest molecules commonly focus on three aspects: photoswitching the cage to release or trap the guest, the effect of the confining environment on the guest, and light-induced exciton or charge transfer within the cage structure. Here, we exploit ultrafast spectroscopy to address how the guest alters the photoswitching characteristics of the cage. For this, the impacts of three disparate guest compounds on ring-opening or ring-closure of a dithienylethene (DTE) ligand in a photoswitchable DTE-based coordination cage are juxtaposed. The guest modulates both outcome and timescale of the cage's photodynamics, by an interplay of structural strain, heavy-atom effect, and enhancement of charge-transfer processes exercised by the guest on the photo-excited cage. The approach might prove beneficial for attuning the applicability of photoswitchable nanocontainers and desired guest compounds.
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Affiliation(s)
- Kevin Artmann
- Universitat Regensburg Institut für Physikalische und Theoretische Chemie GERMANY
| | - Ru-Jin Li
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | - Selina Juber
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Chemistry GERMANY
| | - Elie Benchimol
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | | | - Guido H Clever
- TU Dortmund: Technische Universitat Dortmund Chemistry GERMANY
| | - Patrick Nuernberger
- Universitat Regensburg Institut für Physikalische und Theoretische Chemie Universitätsstraße 31 93053 Regensburg GERMANY
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5
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Li RJ, Marcus A, Fadaei-Tirani F, Severin K. Orientational self-sorting: formation of structurally defined Pd 4L 8 and Pd 6L 12 cages from low-symmetry dipyridyl ligands. Chem Commun (Camb) 2021; 57:10023-10026. [PMID: 34505600 DOI: 10.1039/d1cc03828a] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Tetra- and hexanuclear coordination cages were obtained in reactions of [Pd(CH3CN)4](BF4)2 with low-symmetry dipyridyl ligands. In both cases, only one structurally defined complex was formed out of a vast pool of potential isomers.
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Affiliation(s)
- Ru-Jin Li
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Adam Marcus
- Institute of Mathematics, EPFL, 1015 Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Kay Severin
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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6
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Li RJ, Fadaei-Tirani F, Scopelliti R, Severin K. Tuning the Size and Geometry of Heteroleptic Coordination Cages by Varying the Ligand Bent Angle. Chemistry 2021; 27:9439-9445. [PMID: 33998736 DOI: 10.1002/chem.202101057] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Indexed: 12/13/2022]
Abstract
Spherical assemblies of the type [Pdn L2n ]2n+ can be obtained from PdII salts and curved N-donor ligands, L. It is well established that the bent angle, α, of the ligand is a decisive factor in the self-assembly process, with larger angles leading to complexes with a higher nuclearity, n. Herein, we report heteroleptic coordination cages of the type [Pdn Ln L'n ]2n+ , for which a similar correlation between the ligand bent angle and the nuclearity is observed. Tetranuclear cages were obtained by combining [Pd(CH3 CN)4 ](BF4 )2 with 1,3-di(pyridin-3-yl)benzene and ligands featuring a bent angle of α=120°. The use of a dipyridyl ligand with α=149° led to the formation of a hexanuclear complex with a trigonal prismatic geometry; for linear ligands, octanuclear assemblies of the type [Pd8 L8 L'8 ]16+ were obtained. The predictable formation of heteroleptic PdII cages from 1,3-di(pyridin-3-yl)benzene and different dipyridyl ligands is evidence that there are entire classes of heteroleptic cage structures that are privileged from a thermodynamic point of view.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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7
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Li RJ, Pezzato C, Berton C, Severin K. Correction: Light-induced assembly and disassembly of polymers with Pd n L 2n -type network junctions. Chem Sci 2021; 12:4985. [PMID: 34166480 PMCID: PMC8179599 DOI: 10.1039/d1sc90054d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Correction for ‘Light-induced assembly and disassembly of polymers with PdnL2n-type network junctions’ by Ru-Jin Li et al., Chem. Sci., 2021, DOI: 10.1039/d1sc00127b.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cristian Pezzato
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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8
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Li RJ, Pezzato C, Berton C, Severin K. Light-induced assembly and disassembly of polymers with Pd n L 2n -type network junctions. Chem Sci 2021; 12:4981-4984. [PMID: 34163745 PMCID: PMC8179541 DOI: 10.1039/d1sc00127b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/18/2021] [Accepted: 02/19/2021] [Indexed: 12/30/2022] Open
Abstract
Polymers containing Pd n L2n complexes as network junctions were obtained by reaction of poly(ethylene glycol)-linked N-donor ligands with Pd2+. The addition of a metastable state photoacid renders the networks light sensitive, and gel-sol transitions can be achieved by irradiation with light. The inverse process, a light-induced sol-gel transition, was realized by using a molecularly defined Pd complex as an acid-sensitive reservoir for Pd2+. Upon irradiation, Pd2+ ions are released, allowing the formation of an acid-resistant polymer network. Both the gel-sol and the sol-gel transitions are reversed in the dark.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cristian Pezzato
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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9
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Li RJ, Tessarolo J, Lee H, Clever GH. Multi-stimuli Control over Assembly and Guest Binding in Metallo-supramolecular Hosts Based on Dithienylethene Photoswitches. J Am Chem Soc 2021; 143:3865-3873. [PMID: 33673736 PMCID: PMC7975281 DOI: 10.1021/jacs.0c12188] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
![]()
It is difficult to
assemble multi-component metallo-supramolecular
architectures in a non-statistical fashion, which limits their development
toward functional materials. Herein, we report a system of interconverting
bowls and cages that are able to respond to various selective stimuli
(light, ligands, anions), based on the self-assembly of a photochromic
dithienylethene (DTE) ligand, La, with PdII cations. By combining the concept of “coordination
sphere engineering”, relying on bulky quinoline donors, with
reversible photoswitching between the ligand’s open (o-La) and closed (c-La) forms, a [Pd2(o-La)4] cage (o-C) and a [Pd2(c-La)3] bowl (c-B) were obtained,
respectively. This structural rearrangement modulates the system’s
guest uptake capabilities. Among three bis-sulfonate guests (G1, G2, and G3), the cage can encapsulate
only the smallest (G1), while the bowl binds all of them.
Bowl c-B was further used to synthesize
a series of heteroleptic cages, [Pd2LA3LB], representing a motif never reported before. Additional
ligands (Lc-f), with short
or long arms, tune the cavity size, thus enabling or preventing guest
uptake. Addition of Br–/Ag+ makes it
possible to change the overall charge, again triggering guest uptake
and release, as well as fourth ligand de-/recomplexation. In combination,
site-selective introduction of functionality and application of external
stimuli lead to an intricate system of hosts with different guest
preferences. A high degree of complexity is achieved through cooperativity
between only a few components.
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Affiliation(s)
- Ru-Jin Li
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Jacopo Tessarolo
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Haeri Lee
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Guido H Clever
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
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10
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Cheng ZY, Liu LY, Lei YJ, Li HL, Zhang LS, Li RJ, Huang QX. Modeling and improvement of a low-frequency micro-accelerometer. Rev Sci Instrum 2021; 92:025002. [PMID: 33648148 DOI: 10.1063/5.0024940] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
A sensitivity- and resolution-improving method for a low-frequency micro-vibration accelerometer is presented in this paper. A sensitivity model of the measurement system is derived and established. The key parameters that limit the sensitivity and the resolution of the accelerometer were identified through the sensitivity coefficient analysis method. The structural parameters and the signal process method were then optimized. Experimental results show that the sensitivity of the accelerometer has improved from 1.10 V/(m/s2) to 19.21 V/(m/s2), and the resolution has improved from 1.47 mm/s2 to 0.21 mm/s2. The lowest working frequency range has expanded from 1 Hz to 0.7 Hz. The presented method is effective and cheap and can be applied to other sensors.
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Affiliation(s)
- Z Y Cheng
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - L Y Liu
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - Y J Lei
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - H L Li
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - L S Zhang
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - R J Li
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - Q X Huang
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
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11
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Sudan S, Li RJ, Jansze SM, Platzek A, Rudolf R, Clever GH, Fadaei-Tirani F, Scopelliti R, Severin K. Identification of a Heteroleptic Pd 6L 6L' 6 Coordination Cage by Screening of a Virtual Combinatorial Library. J Am Chem Soc 2021; 143:1773-1778. [PMID: 33476512 DOI: 10.1021/jacs.0c12793] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The design of structurally defined heteroleptic coordination cages is a challenging task, and only few examples are known to date. Here we describe a selection approach that allowed the identification of a novel hexanuclear Pd cage containing two types of dipyridyl ligands. A virtual combinatorial library of [PdnL2n](BF4)2n complexes was prepared by mixing six different dipyridyl ligands with substoichiometric amounts of [Pd(CH3CN)4](BF4)2. Analysis of the equilibrated reaction mixture revealed the preferential formation of a heteroleptic [Pd6L6L'6](BF4)12 assembly. The complex was prepared on a preparative scale by a targeted synthesis, and its structure was elucidated by single-crystal X-ray diffraction. It features an unprecedented trigonal-antiprismatic cage structure with two triangular Pd3L3 macrocycles bridged by six L' ligands. A related but significantly larger [Pd6L6L'6](BF4)12 cage was obtained by using metalloligands instead of organic dipyridyl ligands.
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Affiliation(s)
- Sylvain Sudan
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Suzanne M Jansze
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - André Platzek
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Robin Rudolf
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Guido H Clever
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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12
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Zhou YL, Liu W, Li Y, Qin Y, Li RJ, Yu LL, Chen YH, Xu YJ. [Establishment of nutrition literacy core items for Chinese lactating women]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:1087-1092. [PMID: 33115194 DOI: 10.3760/cma.j.cn112150-20200327-00454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To establish the nutrition literacy core items for Chinese lactating women. Methods: The framework system and preliminary items of nutrition literacy were established through literature review and experts consultation. E-Delphi method was used to determine the nutrition literacy items. 11 experts in the field of maternal and child nutrition, obstetrics and gynecology, health education and nutrition and diseases were invited to score the importance of each nutrition literacy item via Email. The judgment basis and familiarity of experts towards the items, active coefficient, authority coefficient and harmony coefficient were evaluated and analyzed to generate the final list of nutrition literacy items. Results: The active coefficients of consultation in two rounds were 81.8% (9/11) and 87.5% (8/9). The authority coefficients were (0.86±0.11) and (0.85±0.06). The average scores of importance were (4.03±1.24) and (4.64±0.50)and the harmony coefficients were 0.556 (χ²=163.42, P<0.001) and 0.40 (χ²=64.41, P<0.001). After the second round of consultation, all selected items met the inclusion criteria. We identified the final list of nutrition literacy items consisting of 3 scales (basic knowledge and concept, lifestyles and dietary behaviors, and basic skills), 10 subscales (basic nutrition concept, food and nutrition knowledge, feeding knowledge, lifestyles, dietary behaviors, feeding behaviors, weight management, complementary food production, acquisition, understanding and application of nutrition information, judgement of nutrition information, and nutrition decision making) with 24 items in total. Conclusions: The framework system and core items of nutrition literacy were established for Chinese lactating women based on E-Delphi method. The experts involved in the consultation process presented a performance with good representativeness, enthusiasm and authority. All experts' opinions are coordinated and unified, which could satisfy the demand of developing nutrition literacy core items for target population.
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Affiliation(s)
- Y L Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - W Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Y Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Y Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - R J Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - L L Yu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Y H Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Y J Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
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13
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Chen B, Zhang S, Tian YA, Liu HF, Liu DH, Xue X, Li RJ, Hu XX, Guan JY, Tang WX, Xu HE. [Study on syndromic deafness caused by novel pattern of compound heterozygous variants in the CDH23 gene]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:822-829. [PMID: 32911884 DOI: 10.3760/cma.j.cn115330-20191015-00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the pathogenic variants of a family with syndromic deafness by high-throughput sequencing. Methods: The family was from Puyang City, Henan Province, and had four members, including two with syndromic deafness. The proband and his sister had congenital deafness, and their parents had normal phenotypes. The clinical phenotype of the family was characterized using clinical examinations and pedigree analysis. The clinical examinations included imaging examination, audiometry (pure tone audiometry, acoustic immittance, brainstem auditory evoked potential, and otoacoustic emission), vestibular function test, and ophthalmic examination (visual acuity test, visual field test, fundus examination, visual evoked potential, and electroretinogram). Target exome sequencing of 129 known deafness genes and bioinformatics analysis were used to screen suspected pathogenic variants. Sanger sequencing and minigene assay were used to verify and functionally investigate the mutation detected, respectively. According to the standards and guidelines for interpreting genetic variants proposed by the American College of Medical Genetics and Genomics, the variants c.6049G>A and c.8699A>G were classified as pathogenic/likely pathogenic, and the variant c.9856C>G was classified as variants of uncertain significance. Results: The probands and his sister had severe sensorineural hearing loss with decreased binocular vision, night blindness, decreased peripheral visual field sensitivity and partial visual field defect, and normal vestibular function. Both of them had three CDH23 mutations, including CDH23 (NM_022124.5) c.6049G>A (p.Gly2017Ser),c.9856C>G (p.His3286Asp), and c.8699A>G (p. Asp2900Gly), The first two were inherited from the father, and the last one was from the mother. The missense variants c.9856C>G and c.8699A>G were not included in the gnomad database. The missense mutation c.6049G>A was located in the last position of exon 46 and was predicted to affect splicing by bioinformatics software. The minigene experiment showed that the mutation cause exon skipping of exon 46, resulting in an abnormal protein. Conclusions: Compound heterozygous variations of the CDH23 are the leading cause of USH1D in the family. This study confirms that the compound heterozygosity of splicing and missense variants of the CDH23 gene could lead to USH1D.
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Affiliation(s)
- B Chen
- Department of Otology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S Zhang
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - Y A Tian
- Beijing Genomics Institute College, Zhengzhou University, Zhengzhou 450052, China; Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou 450052, China
| | - H F Liu
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - D H Liu
- Application Center for Precision Medicine Research, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Xue
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - R J Li
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - X X Hu
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - J Y Guan
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
| | - W X Tang
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China; Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou 450052, China; Application Center for Precision Medicine Research, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H E Xu
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China; Application Center for Precision Medicine Research, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Wu YF, Shen ZY, Yang XY, Li RJ, Liang NX, Lan GH. [Non-occupational post-exposure prophylaxis in men who have sex with men in Guangxi Zhuang Autonomous Region]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1086-1091. [PMID: 32741176 DOI: 10.3760/cma.j.cn112338-20191008-00719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the effects of HIV non-occupational post-exposure prophylaxis (nPEP) in men who have sex with men (MSM) in Nanning and Liuzhou, Guangxi Zhuang Autonomous Region. Methods: Participants were recruited through community publicity and advocacy under a "Trinity" approach among non-governmental organizations (NGO), CDCs/hospitals and pharmacies. Basic information, drug taking and follow-up tests of participants who had enrolled for 28 days of the research were collected. Descriptive statistics were used for data analysis. Results: From September 2017 to March 2019, a total of 213 MSM cases consulted for nPEP service, 159 of them were eligible for nPEP, and 154 were enrolled in the study for drug taking. For 132 cases enrolled in the study for 28 days and above, 118 completed the 28-day course of antiretroviral therapy (ART), while 10 failed to complete the 28-day course of ART, and 4 could not be confirmed whether completed the full course of ART due to loss of contact. For those who completed 28-day course of ART, 94.1% (111/118) and 75.4% (89/118) respectively received HIV tests at 4-6 weeks and 3 months after exposure, the results were all HIV negative. Conclusion: Under the "Trinity" approach, taking antiviral drugs earlier after HIV non-occupational exposure can effectively reduce the risk of HIV infection and to some extent, reduce the new infection cases.
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Affiliation(s)
- Y F Wu
- Division of HIV/AIDS Prevention and Control, Guangxi Center for Disease Prevention and Control, Nanning 530028, China
| | - Z Y Shen
- Division of HIV/AIDS Prevention and Control, Guangxi Center for Disease Prevention and Control, Nanning 530028, China
| | - X Y Yang
- U.S. CDC Global AIDS Program, China Office, Beijing 100600, China
| | - R J Li
- Division of HIV/AIDS Prevention and Control, Guangxi Center for Disease Prevention and Control, Nanning 530028, China
| | - N X Liang
- Division of HIV/AIDS Prevention and Control, Guangxi Center for Disease Prevention and Control, Nanning 530028, China
| | - G H Lan
- Division of HIV/AIDS Prevention and Control, Guangxi Center for Disease Prevention and Control, Nanning 530028, China
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15
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Gao JD, Li RJ, Ma PL, Yu LL, Li JT, Tian HT. Knockdown of lncRNA HCP5 protects against cerebral ischemia/reperfusion injury by regulating miR-652-3p. J BIOL REG HOMEOS AG 2020; 34:893-900. [PMID: 32657103 DOI: 10.23812/20-148-a-33] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Previous studies have shown that lncRNAs play crucial roles in cerebral ischemia/reperfusion injury. In this study, the function and possible mechanism of lncRNA HCP5 in cerebral ischemia/reperfusion injury was investigated. An oxygen glucose deprivation (OGD) model in N2a cells was used to simulate cerebral ischemia/reperfusion injury in vitro. The functional mechanism of lncRNA HCP5 was detected using Trypan blue staining, JC-1, MTT and dual luciferase reporter assays. The expression of apoptosis-related proteins (Bcl-2 and Bax) was measured by Western blot analysis. We found that lncRNA HCP5 was upregulated in N2a cells treated with OGD/R, and knockdown of lncRNA HCP5 enhanced cell viability and reduced cell death. In addition, miR-652-3p was found to act as a sponge for lncRNA HCP5. The overexpression of miR- 652-3p can prevent cerebral ischemic reperfusion injury, however, lncRNA HCP5 attenuated the protective effect of miR-652-3p in cerebral ischemic reperfusion injury. In conclusion, upregulation of lncRNA HCP5 may exacerbate cerebral ischemic reperfusion injury by sponging miR-652-3p.
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Affiliation(s)
- J D Gao
- Department of Pain Clinic, Yantaishan Hospital, Yantai, Shandong Province, China
| | - R J Li
- Department of Pharmacy, The People's Hospital of Zhangqiu Area, Jinan, Shandong Province, China
| | - P L Ma
- Department of Anesthesiology, Qingdao Hospital of Traditional Chinese Medicine, Qingdao Hiser Medical Group, Qingdao, Shandong Province, China
| | - L L Yu
- Endoscopic Room, The People's Hospital of Zhangqiu Area, Jinan, Shandong Province, China
| | - J T Li
- ECG Room, The People's Hospital of Zhangqiu Area, Jinan, Shandong Province, China
| | - H T Tian
- Department of Anesthesiology, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong Province, China
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16
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Xu P, Li RJ, Jin XW, Wang PY, Chen LJ, Fan KC. A new micro/nano-touch-trigger probe using an optoelectronic sensor with a wedge prism. Rev Sci Instrum 2020; 91:076103. [PMID: 32752806 DOI: 10.1063/5.0005587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 06/07/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we propose a new touch-trigger probe with high precision and a large permissible measurement range. A wedge prism was used in the sensing unit to achieve 3D detection using only one optoelectronic sensor. The measurement range was expanded from ±8 µm to ±14 µm through the new optical structure. The probe has uniform stiffness and uniform sensitivity. Some experiments were performed to investigate the performance of the probe. It was found that the probe has a resolution of 10 nm and a repeatability of less than 9.1 nm. The applicability of the probe was also verified.
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Affiliation(s)
- P Xu
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - R J Li
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - X W Jin
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - P Y Wang
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - L J Chen
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - K C Fan
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
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Li J, Li RJ, Zhao X, Liu HQ. The role of Sigma-1 receptor agonist in hepatic ischemiareperfusion injury. J BIOL REG HOMEOS AG 2020; 34:845-851. [PMID: 32660197 DOI: 10.23812/20-103-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Sigma-1 receptor (Sig-1R) is a ligand-operated protein that modulates activity of various proteins. It is expressed within the endoplasmic reticulum membranes of multiple organs. We examined the role of Sig-1R in hepatic ischemia-reperfusion injury (IRI). We studied IRI indicators in Sig-1R-/- mice and compared them with wild-type controls. In addition, we assessed the influence of Sig-1R agonist, fluvoxamine, on IRI in both types of animals. We found that Sig-1R-/- mice exhibited significantly decreased liver damage after hepatic IRI as compared to wild-type mice. This effect was manifested by decreased serum levels of alanine aminotransferase (AST), aspartate aminotransferase (ALT), myeloperoxidase (MPO), and supernatant level of lactate dehydrogenase (LDH), decreased endothelial glycocalyx shedding indexed by decreased serum levels of heparan sulfate and syndecan-1, slightly improved liver histology and reduced metalloproteinase-9 expression. Furthermore, in comparison to Sig-1R-/- mice, fluvoxamine significantly increased serum levels of AST, ALT, MPO, and LDH in wildtype animals in a dose-dependent manner at 6 h after IRI. Our findings demonstrate that the absence of Sig-1R provides a protective effect during hepatic IRI. Sig-1R-mediated signaling pathways may play distinct roles in IRI in different organs. The dynamic interaction between Sig-1R and other signaling molecules in different organs needs to be examined further.
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Affiliation(s)
- J Li
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - R J Li
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, Jilin, China
| | - X Zhao
- Department of Paediatrics, The First Hospital of Jilin University, Changchun, Jilin, China
| | - H Q Liu
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, Jilin, China
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18
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Li RJ, Holstein JJ, Hiller WG, Andréasson J, Clever GH. Mechanistic Interplay between Light Switching and Guest Binding in Photochromic [Pd 2Dithienylethene 4] Coordination Cages. J Am Chem Soc 2019; 141:2097-2103. [PMID: 30620873 DOI: 10.1021/jacs.8b11872] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Photochromic [Pd2L4] coordination cages based on dithienylethene (DTE) ligands L allow triggering guest uptake and release by irradiation with light of different wavelengths. The process involves four consecutive electrocyclic reactions to convert all chromophores between their open and closed photoisomeric forms. So far, guest affinity of the fully switched species was elucidated, but mechanistic details concerning the intermediate steps remained elusive. Now, a new member of the DTE cage family allows unprecedented insight into the interplay between photoisomerization steps and guest location inside/outside the cavity. Therefore, the intrinsic chirality of the DTE backbones was used as reporter for monitoring the fate of a chiral guest. In its "open" photoisomeric form ( o-L, [Pd2( o-L)4] = o-C), the C2-symmetric DTE chromophore quickly converts between energetically degenerate P and M helical conformations. After binding homochiral 1 R-( -) or 1 S-( +) camphor sulfonate ( R-CSA or S-CSA), guest-to-host chirality transfer was observed via a circular dichroism (CD) signal for the cage-centered absorption. Irradiating the R/S-CSA@ o-C host-guest complexes at 313 nm produced configurationally stable "closed" photoisomers, thus locking the induced chirality with an enantiomeric excess close to 25%. This value (corresponding to chiral induction for one out of four ligands), together with DOSY NMR, ion mobility mass spectrometry, and X-ray structure results, shows that closure of the first photoswitch is sufficient to expel the guest from the cavity.
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Affiliation(s)
- Ru-Jin Li
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Straße 6 , 44227 Dortmund , Germany
| | - Julian J Holstein
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Straße 6 , 44227 Dortmund , Germany
| | - Wolf G Hiller
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Straße 6 , 44227 Dortmund , Germany
| | - Joakim Andréasson
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , 41296 , Göteborg , Sweden
| | - Guido H Clever
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Straße 6 , 44227 Dortmund , Germany
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19
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Li RJ, Qin LM, Ning PL, Zhu DJ, Li XP. [Investigation on the normal value of urinary arsenic in healthy people in different areas of Guangxi, China]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:751-753. [PMID: 29294548 DOI: 10.3760/cma.j.issn.1001-9391.2017.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the upper limit of the normal value of arsenic in healthy adult population in different areas of Guangxi. Methods: From 2015 to 2016, 1533 subjects from 14 counties and cities in Guangxi were collected by age, gender, stratified random sampling and questionnaire survey. 1417 urine samples with satisfactory urine quality and complete information were collected.The content of arsenic in urine was determined by atomic fluorescence spectrometry. Results: The upper limit of normal arsenic in healthy adults in guangxi was 0.053 mg/L. Male urinary arsenicP(50)(0.011mg/L)was higher than that of the female(0.008mg/L), the difference was statistically significant(Z=5.352,P<0.01). Smoking urinary arsenicP(50)(0.012mg/L) was higher than that of nonsmokers(0.009mg/L), the difference was statistically significant(Z=3.404,P<0.01). GroupP(5)0 urine arsenic in coastal areas(0.012mg/L) the crowd was higher than that in non coastal areas(0.009mg/L), the difference was statistically significant(Z=-7.522,P<0.01). Conclusion: The upper limit of normal arsenic in healthy adults in Guangxi area is 0.053mg/L,and there are differences in the levels of arsenic in healthy adults, such as different genders and regions.
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Affiliation(s)
- R J Li
- Guangxi Occupational Disease Prevention Research Institute, Nanning 530021, China
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20
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Qin LM, Li RJ, Ning PL, Li Y, Li XP. [An investigation of normal urinary manganese value in healthy adults in different places in Guangxi, China]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:745-747. [PMID: 29294546 DOI: 10.3760/cma.j.issn.1001-9391.2017.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the normal urinary manganese value in healthy adults in Guangxi, China and its distribution characteristics. Methods: From 2015 to 2016, stratified random sampling based on age and sex was performed to select 1533 healthy adults aged 18-60 years in Nanning,Liuzhou,Guilin,Hezhou,Wuzhou,Yulin,Guigang,Beihai,Qinzhou,Laibin,Hechi Nandan,Bose Jingxi,Chongzuo Daxin,and Fangchenggang.All of them had no history of occupational manganese exposure or acute or chronic liver/renal diseases and had lived in the local area for more than one year. A total of 1417 urine samples with normal specific gravity and complete data were obtained, and graphite furnace atomic absorption spectrometry was used to measure urinary manganese.The distribution characteristics of urinary manganese level were analyzed among adults with different ages,sexes,or presence or absence of smoking habits or among those who lived or did not live in the mining area. Results: The geometric mean of urinary manganese among healthy adults in Guangxi was 0.52 μg/L,and the upper limit of normal was 5.68μg/L. There was no significant difference in urinary manganese level between the healthy adults with different ages, sexes,or presence or absence of smoking habits (P>0.05).The healthy adults who lived in the mining area of nonferrous metal mines had a significantly higher geometric mean of urinary manganese than those who did not live in such areas(1.65μg/Lvs0.34μg/L,P<0.01). Conclusion: The upper limit of normal of urinary manganese is 5.68 μg/L among healthy adults in Guangxi,and the healthy adults who live in the mining area of manganese mine or nonferrous metal mines have a significantly higher urinary manganese level than those who do not live in such areas.
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Affiliation(s)
- L M Qin
- Guangxi Occupational Disease Prevention Research Institute, Nanning 530021, China
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21
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Liu Y, Chen L, Liu ZG, Li RJ. Diagnosis and treatment of distal limb microcirculatory disturbance caused by steroid injection. J BIOL REG HOMEOS AG 2018; 32:941-944. [PMID: 30043581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Corticosteroid is commonly used for the clinical treatment of pain. It is safe, reliable and a simple procedure with other advantages. However, a possible potential catastrophic complication of corticosteroid injections in distal limbs (e.g., the wrist) is acute radial artery ischemia due to the injection into the radial artery. This may result from spasm attributed to the steroids. While the complication of corticosteroids in the wrist is rare, ischemia of the hand caused by corticosteroid injections in radial artery has been reported in several articles. We treated five patients with microcirculation disturbance of distal limb caused by corticosteroid treatment. Here, we report the two different treatment strategies adopted according to the severity of the disease which achieved good therapeutic effects.
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Affiliation(s)
- Y Liu
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, Jilin, China
| | - L Chen
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Z G Liu
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, Jilin, China
| | - R J Li
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, Jilin, China
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22
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Wang JF, Li Z, Zhang KS, Yuan F, Li RJ, Zhong QJ, Guan ZP. [Unilateral patellar resurfacing in bilateral total knee arthroplasty: a randomized controlled study]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:861-866. [PMID: 29045970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To perform unilateral patellar resurfacing and contralateral patellar retention in bilateral total knee arthroplasty (TKA) randomly, and to compare the clinical effects of patellar retention with patellar resurfacing in TKA. METHODS In the study, 14 bilateral knee osteoarthritis (OA) patients were randomized in the bilateral TKA to receive unilateral patellar resurfacing and contralateral patellar retention, including 28 knees, all were females, 53 to 78 years old, with average (66.9±7.8) years, and the BMI was (26.3±1.8) kg/m2. All subjects were followed up from 3 to 12 months. The clinical effects were evaluated based on measurements of American Knee Society score (KSS), range of motion (ROM), anterior knee pain, patellar clunk, and patellar tilt angle (PTA). RESULTS All the wounds healed primarily without significant complications, such as infection, aseptic loosening, patellar fracture and so on. The preoperative KSS scores of patellar resurfacing group were 38.9±22.2, and the scores changed to be 92.4±6.7 after operation, which were added by 53.5±20.3. While in the patellar retention group, the KSS scores were 38.4 ± 20.5 preoperatively, and after operation, which were added to be 92.1±4.2, and improved by 53.7±21.4. The differences in the changed KSS scores between TKA with and without patellar resurfacing were not statistically significant (Independent t-test, P=0.98). The ROM was changed from 95.4°±13.5° preoperatively to 120.4°±8.9° postoperatively in the patellar resurfacing group and from 92.9°±19.1° preoperatively to 120.4±8.4° postoperatively in the patellar retention group. The ROM of the two group were increased by 25.0°±14.5° and 27.5°±19.4° respectively. However, no remarkable differences were observed between the 2 groups in the knee ROM (Independent t-test, P=0.70). At the end of the latest follow-up, 3 knees in the patellar resurfacing group and 2 knees in the patellar retention group had knee anterior pain, the incidences of anterior knee pain were 21.4% and 14.3% respectively. There was no obvious difference for the incidence of post-operative anterior knee pain (Chi-square test, P=0.62). The incidences of post-operative patellar clunk in the 2 groups were all with 3 knees (21.4%), which had no significant difference in the 2 groups (Chi-square test, P=1.00). The post-operative PTA were 2.6°±2.6° in the patellar resurfacing group and 3.6°±2.9° in the patellar retention group, respectively. There was also no statistical difference between the 2 groups (Chi-square test, P=0.36). CONCLUSION For knee OA patients with mild or moderate patellar cartilage damage, performing patellar resurfacing or not didn't significantly affect anterior knee pain, patellar clunk, functional outcomes or patellar tracking after TKA. So we suggest retain patella in TKA for OA patients with mild or moderate patellar cartilage damage.
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Affiliation(s)
- J F Wang
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China; Department of Orthopedics, Peking University International Hospital, Beijing 102206, China
| | - Z Li
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - K S Zhang
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - F Yuan
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - R J Li
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - Q J Zhong
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - Z P Guan
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
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Chen L, Liu HQ, Yang F, Liu Y, Zhang ZX, Liu ZG, Li RJ. Small incision releasing of transverse carpal ligament in diagnosis and treatment of mild carpal tunnel syndrome. J BIOL REG HOMEOS AG 2017; 31:673-678. [PMID: 28956416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carpal tunnel syndrome (CTS) is a medical condition due to compression of the median nerve as it travels through the wrist at the carpal tunnel. Few studies have been carried out to examine the effectiveness of mini-open technique for carpal tunnel release using minor wrist skin crease incision in patients with mild CTS. Therefore, the present study was designed to improve the neurophysiological parameters for the diagnosis of mild CTS, and to examine the effectiveness of small incision surgery for the clinical treatment of mild CTS. To this end, we applied the electrophysiological diagnosis of difference between median and ulnar palmar latencies (PMPU) and the difference of median and ulnar latencies from D4 stimulation (D4MD4U) in 80 patients with mild CTS, whom were diagnosed by hand surgeon at the First Hospital of Jilin University. Those patients showed normal in median nerve electrophysiological examination, and received minor wrist skin crease incision surgery. All patients were followed up and received electromyography (EMG) examination. We showed that D4MD4U and PMPU methods are sensitive diagnosis methods for mild CTS, and mini-open wrist crease incision is beneficial for the treatment of mild CTS in clinical settings.
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Affiliation(s)
- L Chen
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
| | - H Q Liu
- Department of Anesthesiology, The First Hospital of Jilin University, Jilin, China
| | - F Yang
- Department of Pediatric surgery, The First Hospital of Jilin University, Jilin, China
| | - Y Liu
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
| | - Z X Zhang
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
| | - Z G Liu
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
| | - R J Li
- Department of Hand Surgery, The First Hospital of Jilin University, Jilin, China
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Zhao D, Liu B, Zhang YK, Guo W, Li SY, Lu XJ, Li RJ. Structural and biochemical characteristics of chitin-binding protein SeCBP66 from Spodoptera exigua (Hübner). Genet Mol Res 2016; 15:gmr8789. [PMID: 27525954 DOI: 10.4238/gmr.15038789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Peritrophic membrane proteins are important components of the insect peritrophic membrane. A novel cDNA gene encoding a chitin-binding protein, named secbp66, was identified by immunization screening of the cDNA library of Spodoptera exigua. The full length of secbp66 is 1806 bp, which encodes 602 amino acids. The predicted weight of the protein is 64.2 kDa. Bioinformatic analysis showed that a signal peptide composed of 17 amino acids located at the N-terminal of SeCBP66 contained seven tandem putative Type-II functional chitin-binding domains and five potential N-glycosylation sites, but no O-linked glycosylation sites. To study the properties of SeCBP66, recombinant SeCBP66 was successfully expressed in the insect cell line BTI-Tn-5B1-4 with a Bac-to-Bac expression system. A chitin binding experiment showed that the recombinant SeCBP66 protein could bind to chitin strongly. This study of the novel chitin-binding protein SeCBP66 provides a basis for developing new control targets for S. exigua.
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Affiliation(s)
- D Zhao
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - B Liu
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Y K Zhang
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - W Guo
- College of Plant Protection, Agricultural University of Hebei, Baoding, China .,Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - S Y Li
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - X J Lu
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - R J Li
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
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Li M, Li RJ, Bai H, Xiao P, Liu GJ, Guo YW, Mei JZ. Association between the pre-miR-196a2 rs11614913 polymorphism and gastric cancer susceptibility in a Chinese population. Genet Mol Res 2016; 15:gmr7516. [PMID: 27173281 DOI: 10.4238/gmr.15027516] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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
We did a case-control study to provide a more comprehensive evaluation of the association of the pre-miR-196a2 rs11614913 polymorphism with gastric cancer. Between January 2013 and December 2014, 182 patients newly diagnosed with primary gastric cancer and 182 control subjects were recruited at Zhengzhou People's Hospital. For SNP genotyping, we used the Assay Designer 3.1 to design the primers of polymerase chain reaction. Using the chi-square test, we found that patients with gastric cancer were more likely to be alcohol drinkers (χ(2) = 4.4, P = 0.04), to have a family history of cancer in the first relatives (χ(2) = 5.29, P = 0.02), and to be infected with Helicobacter pylori (χ(2) = 23.39, P < 0.001). A significant difference in the genotype distributions of rs11614913 was observed in our study (χ(2) = 6.66, P = 0.04). By logistic regression analysis, we found that the CC genotype of rs11614913 was associated with an increased risk of gastric cancer in a codominant model (OR = 2.68, 95%CI = 1.17-6.44). By stratification analysis, we found that the CC genotype was associated with a strongly increased risk of gastric cancer in drinkers when compared with the TT+TC genotype (OR = 5.63, 95%CI = 1.54-30.76). In conclusion, the results of our study suggest an association between the rs11614913 gene polymorphism and an elevated risk of gastric cancer, especially in drinkers.
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Affiliation(s)
- M Li
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - R J Li
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - H Bai
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - P Xiao
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - G J Liu
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - Y W Guo
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - J Z Mei
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
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Li RJ, Li M, Liu GJ, Guo YW, Bai H, Xiao P, Mei JZ. Association between ERCC5 gene polymorphisms and gastric cancer risk in a Chinese population. Genet Mol Res 2016; 15:gmr7510. [PMID: 27051028 DOI: 10.4238/gmr.15017510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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
We conducted a hospital-based case-control study to investigate the association between 3 common SNPs in the ERCC5 gene (rs1047768, rs751402, and rs17655) and the risk of developing gastric cancer. Between January 2013 and December 2014, samples were collected from 216 gastric cancer patients and 216 control subjects. ERCC5 rs1047768, rs751402, and rs17655 polymorphisms were genotyped by polymerase chain reaction combined with restriction fragment length polymorphism analysis. By conditional logistic regression analysis, the GG genotype of rs17655 was found to be associated with an elevated risk of gastric cancer in a codominant model, and the adjusted OR (95%CI) was 1.96 (1.10-3.50). Moreover, in a dominant model, the CG + GG genotype of rs17655 was correlated with an increased risk of gastric cancer compared to the CC genotype (OR = 1.48; 95%CI = 1.00-2.22). rs1047768 and rs751402 were not significantly correlated with an increased or decreased gastric cancer risk.
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Affiliation(s)
- R J Li
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - M Li
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - G J Liu
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - Y W Guo
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - H Bai
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - P Xiao
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
| | - J Z Mei
- Department of Medical Oncology, Zhengzhou People's Hospital, Zhengzhou, China
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Zhang H, Li RJ, Huang X. Role of atrium in automaticity of the sinus node. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:47-50. [PMID: 26736197 DOI: 10.1109/embc.2015.7318297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
As the electrical source of hearts, sino-atrial node cells (SANCs) play significant roles in rhythmic firings. Due to the complex structure and function of SANCs, electrical interactions of SAN and its surrounding atrium has not yet been fully understood. The aim of the present study is to investigate effects of coupling conductance between SAN and atrial cells as well as the ectopic beats in atrium on automaticity of the SAN by computer simulation methods. On the basis of a dynamic mathematical single cell model considering the heterogeneity of central and peripheral SANCs, a two-dimensional inhomogeneous tissue slice including SAN and atrium was developed. The operator splitting method was used to integrate the tissue model. The results demonstrated that the coupling conductance between SAN and atrium had effects on the direction of spontaneous action potential conduction in SAN. Weak coupling resulted in a shift of the earliest pacemaker site from central to peripheral SANCs. Additionally, the ectopic beat-induced excitation in atrium was found to be able to enter into and overdrive suppress the automaticity of SAN. Even if the ectopic beat was delivered after the spontaneous firing had started in central SANCs, the spontaneous conduction toward the periphery could also be suppressed by the retrograde activation from the entering atrial depolarization wave. These findings suggested a direct link between sinus node dysfunction and atrial arrhythmias, and therefore were helpful in explaining the role of atrium in sinus node dysfunction.
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Li RJ, Lin X, Lin SS, Liu X, Chen HS. Tunable deep-subwavelength superscattering using graphene monolayers. Opt Lett 2015; 40:1651-1654. [PMID: 25872039 DOI: 10.1364/ol.40.001651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this Letter, we theoretically propose for the first time that graphene monolayers can be used for superscatterer designs. We show that the scattering cross-section of the bare deep-subwavelength dielectric cylinder is markedly enhanced by six orders of magnitude due to the excitation of the first-order resonance of graphene plamons. By utilizing the tunability of the plasmonic resonance through tuning graphene's chemical potential, the graphene superscatterer works in a wide range of frequencies from several terahertz to tens of terahertz.
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Hu WX, Ding CM, Li RJ, Fan HY, Guo ZJ, Liu W. Single nucleotide polymorphisms in the mitochondrial displacement loop and age-at-onset of non-small cell lung cancer. Genet Mol Res 2015; 14:2512-7. [PMID: 25867397 DOI: 10.4238/2015.march.30.9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The associations between single nucleotide polymorphisms (SNPs) in the displacement loop (D-loop) of mitochondrial DNA (mtDNA) and cancer risk and disease outcome have been extensively analyzed. We investigated the association between age-at-onset and SNPs in the mitochondrial D-loop using a population-based series of non-small cell lung cancer (NSCLC) patients. The D-loop region of mtDNA from NSCLC patients was amplified and sequenced. The age-at-onset curve of NSCLC patients was calculated using the Kaplan-Meier method at each SNP site and values were compared using the log-rank test. The SNP sites of nucleotides 200G/A and 16362T/C were identified to determine their association with age-at-onset of NSCLC using the log-rank test. The nucleotide 207G/A was identified for its association with age-at-onset at a borderline significance level (P = 0.060). We found that genetic polymorphisms in the D-loop were predictive markers for age-at-onset in NSCLC patients. Accordingly, the analysis of genetic polymorphisms in the mitochondrial D-loop can be used to identify NSCLC patient subgroups at high risk of early onset.
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Affiliation(s)
- W X Hu
- Department of Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - C M Ding
- Department of Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - R J Li
- Department of Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - H Y Fan
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Z J Guo
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - W Liu
- Department of Oncology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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Li RJ, Li M, Zhou XP, Ng SW, O'Keeffe M, Li D. ROD-8, a rod MOF with a pyrene-cored tetracarboxylate linker: framework disorder, derived nets and selective gas adsorption. CrystEngComm 2014. [DOI: 10.1039/c4ce00279b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported here is a new CdII-based metal–organic framework (MOF), ROD-8, based on the rod secondary building unit (SBU) and tetratopic linker 1,3,6,8-tetrakis(p-benzoic acid)pyrene.
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Affiliation(s)
- Ru-Jin Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- , PR China
| | - Mian Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- , PR China
| | - Xiao-Ping Zhou
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- , PR China
| | - Seik Weng Ng
- Department of Chemistry
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
- Chemistry Department
- Faculty of Science
| | - Michael O'Keeffe
- Department of Chemistry and Biochemistry
- Arizona State University
- Tempe, USA
| | - Dan Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- , PR China
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Li RJ, Li M, Zhou XP, Li D, O'Keeffe M. A highly stable MOF with a rod SBU and a tetracarboxylate linker: unusual topology and CO2adsorption behaviour under ambient conditions. Chem Commun (Camb) 2014; 50:4047-9. [DOI: 10.1039/c3cc49684h] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Mn-based rod metal–organic framework (MOF), ROD-6, with a new lrk net is synthesized and studied with Ideal Adsorbed Solution Theory (IAST) for selective gas adsorption.
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Affiliation(s)
- Ru-Jin Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- Guangdong 515063, P.R. China
| | - Mian Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- Guangdong 515063, P.R. China
| | - Xiao-Ping Zhou
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- Guangdong 515063, P.R. China
| | - Dan Li
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials
- Shantou University
- Guangdong 515063, P.R. China
| | - Michael O'Keeffe
- Department of Chemistry and Biochemistry
- Arizona State University
- Tempe, USA
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Abstract
Bibliometric analyses, which study trends in research productivity, have not previously been applied to hand and wrist research. This study analyses temporal and geographic trends in hand and wrist research from 1988 to 2007. Original research articles were collected from seven English language journals selected on the basis of impact factor. Research production and quality (level of evidence) were determined by country and global region. Linear regression analysis was used to investigate trends. No significant increase in research volume was observed, but journal impact factors have risen significantly since 1988. Western Europe contributed significantly more high-quality (Level I and II) studies than the United States. Research contributions show a geographical distribution concentrated in the US and Western Europe, but considerable changes in this distribution have occurred. From 1988 to 2007, there was a relative increase in research production from Europe, Latin America and Asia, and a relative decline from the US.
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Affiliation(s)
- C S Ahn
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA
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Hao PP, Zhang MX, Li RJ, Yang JM, Wang JL, Chen YG, Zhang Y. Clopidogrel 150 vs. 75 mg day(-1) in patients undergoing percutaneous coronary intervention: a meta-analysis. J Thromb Haemost 2011; 9:627-37. [PMID: 21255255 DOI: 10.1111/j.1538-7836.2011.04216.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Whether an increase in the daily oral maintenance dose of clopidogrel may improve clinical outcomes in patients undergoing percutaneous coronary intervention (PCI) is still debated. OBJECTIVES This meta-analysis aimed to estimate the relative effect of a 150- vs. 75-mg daily maintenance dosage of clopidogrel on clinical and laboratory end-points in patients undergoing PCI. METHODS We searched electronic and printed sources (up to 14 December 2010) for both randomized control trials and observational studies satisfying the predefined inclusion criteria. RESULTS We retrieved 12 reports of studies including a total of 23,814 patients. Clopidogrel, 150 mg day(-1), was associated with significant reductions in major adverse cardiac and/or cerebrovascular events (odds ratio [OR], 0.67; 95% confidence interval [CI], 0.48-0.94), myocardial infarction (OR, 0.72; 95% CI, 0.60-0.86), target vessel revascularization (OR, 0.27; 95% CI, 0.12-0.62) and stent thrombosis (OR, 0.64; 95% CI, 0.53-0.77) and decreased adenosine diphosphate-induced maximal platelet aggregation. However, as compared with 75 mg day(-1), the 150-mg daily maintenance dosage significantly increased the risk of minor bleeding (OR, 1.21; 95% CI, 1.08-1.36). CONCLUSION As compared with the currently recommended 75-mg day(-1) maintenance dosage of clopidogrel, the 150-mg day(-1) dosage can reduce major adverse cardiac and/or cerebrovascular events but may increase the risk of minor bleeding.
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Affiliation(s)
- P P Hao
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital, Shandong University, Jinan, China
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Jolley V, Li RJ, Richmon JD. Lymphomatous Neoplasm within the Carotid Sheath. Laryngoscope 2010. [DOI: 10.1002/lary.21217] [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: 11/08/2022]
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Li RJ, Zhang GS, Chen YH, Zhu JF, Lu QJ, Gong FJ, Kuang WY. Down-regulation of mitochondrial ATPase by hypermethylation mechanism in chronic myeloid leukemia is associated with multidrug resistance. Ann Oncol 2009; 21:1506-1514. [PMID: 20038517 DOI: 10.1093/annonc/mdp569] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND To identify novel proteins involved in multidrug resistance in chronic myeloid leukemia (CML). MATERIALS AND METHODS Comparative proteomics was used to screen multidrug resistance-related proteins from K562 and K562/A02; the differently expressed proteins were further confirmed by western blot and real-time PCR. short hairpin RNA (shRNA) assay was applied to determine the relationship between candidate protein and adriamycin resistance. Bisulfite sequencing was carried out to assess methylation status of candidate multidrug resistance-related gene promoter. K562/A02 was treated with 5-azacytidine or trichostatin A (TSA); multidrug resistance phenotype and corresponding protein or gene changes were detected. RESULTS Seventeen proteins with altered abundances of more than twofold were detected, among which mitochondrial ATPase in K562/A02 was significantly down-regulated. Suppressing mitochondrial ATPase by shRNA could enhance adriamycin resistance and antiapoptosis activity of K562. The promoter hypermethylation in mitochondrial ATPase was found to be attributed to the adriamycin-resistant phenotype of both K562/A02 (methylated frequency 18.18%) and CML primary cells in accelerated phase (methylated frequency 7.95%) or blast crisis (methylated frequency 26.59%). Inhibition of hypermethylation increased adriamycin sensitivity of K562/A02. A synergistic effect on reversing adriamycin-resistant phenotype was obtained when 5-azacytidine was combined with TSA. CONCLUSION Down-regulation of mitochondrial ATPase can lead to adriamycin resistance in CML and the mechanism is associated with DNA methylation regulation.
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Affiliation(s)
- R J Li
- Department of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China
| | - G S Zhang
- Department of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China.
| | - Y H Chen
- Department of Molecular and Computational Biology, University of Southern California, CA, USA
| | - J F Zhu
- Department of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China
| | - Q J Lu
- Department of Dermatology and Epigenetic Research Center, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China
| | - F J Gong
- Department of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China
| | - W Y Kuang
- Department of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, China
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Lai S, Liu W, Chen J, Yang J, Li ZJ, Li RJ, Liang FX, Liang SL, Zhu QY, Yu XF. Changes in HIV-1 incidence in heroin users in Guangxi Province, China. J Acquir Immune Defic Syndr 2001; 26:365-70. [PMID: 11317080 DOI: 10.1097/00126334-200104010-00014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Guangxi Province, China recently experienced an outbreak of HIV-1 infection among heroin users. We studied HIV-1 incidence rates and associated risk factors for HIV-1 infection among heroin users residing in Pingxiang City. A total of 318 heroin users were followed from February 1998 through January 1999 (median follow-up: 8.1 months). Of these, 130 were prospectively followed from January through September 1999 (median follow-up: 8.3 months). HIV-1 and hepatitis C virus (HCV) incidence rates for each period were calculated. A generalized estimating equation approach was implemented to identify independent risk factors associated with HIV-1 infection across both periods. Among 318 study participants, 97.2% were men. The median age was 22 years. Approximately 60% reported sharing needles. HIV-1 prevalence at baseline was 15.4%. During the first follow-up period, HIV-1 incidence was 2.38 per 100 person years (py), and HCV incidence was 26.8 per 100 py. During the second follow-up period, HIV-1 incidence was 6.86 per 100 py, and HCV incidence was 28.9 per 100 py. After controlling for age and other factors, HCV seropositivity, history of sexually transmitted diseases, and sharing needles were independently associated with HIV-1 infection. These data suggest that HIV-1 incidence was rising over time in Pingxiang City, Guangxi Province. The high incidence of HCV heightens the importance of enhanced prevention programs to reduce injection and needle sharing among heroin users.
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Affiliation(s)
- S Lai
- Department of Epidemiology, Johns Hopkins University School of Hygiene and Public Health, Baltimore, Maryland 21205, USA.
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Chen L, Li RJ, Zhou YB, Chen JJ. [Effect of microinjection of taurine into anterior hypothalamic area on blood pressure in rats]. Sheng Li Xue Bao 1999; 51:593-6. [PMID: 11498960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The effect of taurine in anterior hypothalamic area (AHA) on blood pressure was investigated by means of microinjection and spectrophotofluorometry. The results are as follows. (1) Taurine microinjected into AHA decreased blood pressure markedly. (2) The depressor response of taurine in AHA could be antagonized by propranolol, but not by phentolamine. (3) After microinjection of taurine into AHA, the content of norepinephrine in hypothalamus increased significantly. The above results suggest that taurine in AHA attenuates blood pressure by increasing the content of norepinephrine, probably mediated by beta-adrenergic receptor.
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Affiliation(s)
- L Chen
- Department of Physiology, Faculty of Medicine, Qingdao University, Qingdao 266021
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Li M, Li RJ, Liu MY. [Study on the biological nature of ginseng pearl knot]. Zhongguo Zhong Yao Za Zhi 1989; 14:654-5, 701. [PMID: 2619887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Pearl knots of the root system of cultivated ginseng in different ages and different development stages were studied and compared with wild ginseng. It has been found that the biological nature of pearl knots is the foundation of seasonal absorbing root of ginseng. It is pointed out that to remove the cold-proof matter later and keep suitable soil water in spring are important to prevent cold injury and promote growth of root system of ginseng. Key words ginseng; pearl knot; seasonal absorbing root
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Abstract
Studies are reported on two outbreaks of epidemic diarrhea in China involving 19,007 patients. The first outbreak occurred in the northern part of the Guangxi Autonomous Region and extended south from April through September 1983. In June 1984 a second outbreak of 6,570 cases occurred in Guanyang, a county in the northern part of Guangxi. 125 fecal samples from the two outbreaks were cultured for bacteria; all of the samples except one were negative. Rotavirus particles were detected in 44.1% (15/34) of stool specimens examined by immune electron microscopy. The two outbreaks appeared to be caused by non-group-A rotaviruses, based on the pattern of electrophoretic migration of the RNA genome segments in polyacrylamide gels and on the lack of a detectable common group antigen(s) when tested by an enzyme-linked immunosorbent assay for group A rotaviruses. Complement-fixation tests also indicated that 37.5% of convalescent-phase sera from patients produced antibody to the isolated rotavirus. The total molecular weight of the RNA segments in the new Guangxi strain was calculated to be 10.69 X 10(6), with the 11 genome segments having molecular weights (X 10(6)) of 2.19, 1.83, 1.56, 1.53, 0.82, 0.81, 0.60, 0.46, 0.35, 0.30, and 0.24. This study also reports comparative detection rates for direct and immune electron microscopy and for PAGE. PAGE proved to be the most sensitive detection method for these new rotaviruses.
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Zhou SG, Li SY, Li RJ, Fu XP, Zhao YD. [Fluorescence characteristics of lysine and arginine residues in venom of Naja naja atra]. Zhongguo Yao Li Xue Bao 1984; 5:164-5. [PMID: 6239506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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41
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Li RJ. [Study of the csf isoniazid levels for the optimum isoniazid dosage for treating tuberculous meningitis in adults]. Zhonghua Jie He He Hu Xi Xi Ji Bing Za Zhi 1983; 6:29-31. [PMID: 6872769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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