1
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Zhang MD, Huang JR, Liao PQ, Chen XM. Utilisation of carbon dioxide and nitrate for urea electrosynthesis with a Cu-based metal-organic framework. Chem Commun (Camb) 2024. [PMID: 38456336 DOI: 10.1039/d3cc05821b] [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: 03/09/2024]
Abstract
It is important and challenging to utilise CO2 and NO3- as a feedstock for electrosynthesis of urea. Herein, we reported a stable 2D metal-organic framework (MOF) Cu-HATNA, possessing planar CuO4 active sites, as an efficient electrocatalyst for coupling CO2 and NO3- into urea, achieving a high yield rate of 1.46 g h-1 gcat-1 with a current density of 44.2 mA cm-1 at -0.6 V vs. RHE. This performance surpasses most of the previously reported catalysts, revealing the great prospects of MOFs in sustainable urea synthesis.
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Affiliation(s)
- Meng-Di Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China.
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China
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2
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Zhu HL, Huang JR, Zhang MD, Yu C, Liao PQ, Chen XM. Continuously Producing Highly Concentrated and Pure Acetic Acid Aqueous Solution via Direct Electroreduction of CO 2. J Am Chem Soc 2024; 146:1144-1152. [PMID: 38164902 DOI: 10.1021/jacs.3c12423] [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: 01/03/2024]
Abstract
It is crucial to achieve continuous production of highly concentrated and pure C2 chemicals through the electrochemical CO2 reduction reaction (eCO2RR) for artificial carbon cycling, yet it has remained unattainable until now. Despite one-pot tandem catalysis (dividing the eCO2RR to C2 into two catalytical reactions of CO2 to CO and CO to C2) offering the potential for significantly enhancing reaction efficiency, its mechanism remains unclear and its performance is unsatisfactory. Herein, we selected different CO2-to-CO catalysts and CO-to-acetate catalysts to construct several tandem catalytic systems for the eCO2RR to acetic acid. Among them, a tandem catalytic system comprising a covalent organic framework (PcNi-DMTP) and a metal-organic framework (MAF-2) as CO2-to-CO and CO-to-acetate catalysts, respectively, exhibited a faradaic efficiency of 51.2% with a current density of 410 mA cm-2 and an ultrahigh acetate yield rate of 2.72 mmol m-2 s-1 under neutral conditions. After electrolysis for 200 h, 1 cm-2 working electrode can continuously produce 20 mM acetic acid aqueous solution with a relative purity of 95+%. Comprehensive studies revealed that the performance of tandem catalysts is influenced not only by the CO supply-demand relationship and electron competition between the two catalytic processes in the one-pot tandem system but also by the performance of the CO-to-C2 catalyst under diluted CO conditions.
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Affiliation(s)
- Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Meng-Di Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Can Yu
- Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515021, China
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3
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Liu YY, Huang JR, Zhu HL, Liao PQ, Chen XM. Simultaneous Capture of CO 2 Boosting Its Electroreduction in the Micropores of a Metal-organic Framework. Angew Chem Int Ed Engl 2023; 62:e202311265. [PMID: 37782029 DOI: 10.1002/anie.202311265] [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: 08/03/2023] [Revised: 09/29/2023] [Accepted: 09/29/2023] [Indexed: 10/03/2023]
Abstract
Integration of CO2 capture capability from simulated flue gas and electrochemical CO2 reduction reaction (eCO2 RR) active sites into a catalyst is a promising cost-effective strategy for carbon neutrality, but is of great difficulty. Herein, combining the mixed gas breakthrough experiments and eCO2 RR tests, we showed that an Ag12 cluster-based metal-organic framework (1-NH2 , aka Ag12 bpy-NH2 ), simultaneously possessing CO2 capture sites as "CO2 relays" and eCO2 RR active sites, can not only utilize its micropores to efficiently capture CO2 from simulated flue gas (CO2 : N2 =15 : 85, at 298 K), but also catalyze eCO2 RR of the adsorbed CO2 into CO with an ultra-high CO2 conversion of 60 %. More importantly, its eCO2 RR performance (a Faradaic efficiency (CO) of 96 % with a commercial current density of 120 mA cm-2 at a very low cell voltage of -2.3 V for 300 hours and the full-cell energy conversion efficiency of 56 %) under simulated flue gas atmosphere is close to that under 100 % CO2 atmosphere, and higher than those of all reported catalysts at higher potentials under 100 % CO2 atmosphere. This work bridges the gap between CO2 enrichment/capture and eCO2 RR.
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Affiliation(s)
- Yuan-Yuan Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Guangdong Basic Research Center of Excellence for Functional Molecular Engineering School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Guangdong Basic Research Center of Excellence for Functional Molecular Engineering School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Guangdong Basic Research Center of Excellence for Functional Molecular Engineering School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Guangdong Basic Research Center of Excellence for Functional Molecular Engineering School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Guangdong Basic Research Center of Excellence for Functional Molecular Engineering School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
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4
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Zhao ZH, Huang JR, Liao PQ, Chen XM. Highly Efficient Electroreduction of CO 2 to Ethanol via Asymmetric C-C Coupling by a Metal-Organic Framework with Heterodimetal Dual Sites. J Am Chem Soc 2023. [PMID: 38014883 DOI: 10.1021/jacs.3c08974] [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: 11/29/2023]
Abstract
The electroreduction of CO2 into value-added liquid fuels holds great promise for addressing global environmental and energy challenges. However, achieving highly selective yielding of multi-carbon oxygenates through the electrochemical CO2 reduction reaction (eCO2RR) is a formidable task, primarily due to the sluggish asymmetric C-C coupling reaction. In this study, a novel metal-organic framework (CuSn-HAB) with unprecedented heterometallic Sn···Cu dual sites (namely, a pair of SnN2O2 and CuN4 sites bridged by μ-N atoms) was designed to overcome this limitation. CuSn-HAB demonstrated an impressive Faradic efficiency (FE) of 56(2)% for eCO2RR to alcohols, achieving a current density of 68 mA cm-2 at a low potential of -0.57 V (vs RHE). Notably, no significant degradation was observed over a continuous 35 h operation at the specified current density. Mechanistic investigations revealed that, in comparison to the copper site, the SnN2O2 site exhibits a higher affinity for oxygen atoms. This enhanced affinity plays a pivotal role in facilitating the generation of the key intermediate *OCH2. Consequently, compared to homometallic Cu···Cu dual sites (generally yielding ethylene product), the heterometallic dual sites were proved to be more thermodynamically favorable for the asymmetric C-C coupling between *CO and *OCH2, leading to the formation of the key intermediate *CO-*OCH2, which is favorable for yielding ethanol product.
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Affiliation(s)
- Zhen-Hua Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China
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5
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Zhang MD, Huang JR, Shi W, Liao PQ, Chen XM. Self-Accelerating Effect in a Covalent-Organic Framework with Imidazole Groups Boosts Electroreduction of CO 2 to CO. Angew Chem Int Ed Engl 2023; 62:e202308195. [PMID: 37656139 DOI: 10.1002/anie.202308195] [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: 06/11/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/02/2023]
Abstract
Solvent effect plays an important role in catalytic reaction, but there is little research and attention on it in electrochemical CO2 reduction reaction (eCO2 RR). Herein, we report a stable covalent-organic framework (denoted as PcNi-im) with imidazole groups as a new electrocatalyst for eCO2 RR to CO. Interestingly, compared with neutral conditions, PcNi-im not only showed high Faraday efficiency of CO product (≈100 %) under acidic conditions (pH ≈ 1), but also the partial current density was increased from 258 to 320 mA cm-2 . No obvious degradation was observed over 10 hours of continuous operation at the current density of 250 mA cm-2 . The mechanism study shows that the imidazole group on the framework can be protonated to form an imidazole cation in acidic media, hence reducing the surface work function and charge density of the active metal center. As a result, CO poisoning effect is weakened and the key intermediate *COOH is also stabilized, thus accelerating the catalytic reaction rate.
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Affiliation(s)
- Meng-Di Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Wen Shi
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
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6
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Liu YC, Huang JR, Zhao ZH, Liao PQ, Chen XM. Cyclic Trinickel(II) Clusters in A Metal-Azolate Framework for Efficient Overall Water Splitting. Chem Asian J 2023:e202300281. [PMID: 37147935 DOI: 10.1002/asia.202300281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/02/2023] [Accepted: 05/02/2023] [Indexed: 05/07/2023]
Abstract
Herein, a stable metal-azolate framework with cyclic trinickel(II) clusters, namely [Ni3(μ3-O)(BTPP)(OH)(H2O)2] (Ni-BTPP, H3BTPP = 1,3,5-tris((1H-pyrazol-4-yl)phenylene)benzene), achieved a current density of 50 mA cm-2 at a cell voltage of 1.8 V in 1.0 M KOH solution, while the current density of 20%Pt/C@NF||IrO2@NF is just 35.8 mA cm-2 at 2.0 V under the same condition. Moreover, no obvious degradation was observed over 12 hours of continuous operation at a large current density of 50 mA cm-2. Theoretical calculations revealed that the μ3-O atom in the cyclic trinickel(II) cluster serves as hydrogen-bonding acceptor to facilitate the dissociation of a H2O molecule adsorbed on the adjacent Ni(II) ion, giving a lower energy barrier of H2O dissociation compared with Pt/C; meanwhile, the μ3-O atom can also participate in the water oxidation reaction to couple with the adjacent *OH adsorbed on Ni(II) ion, providing a low-energy coupling pathway, thus Ni-BTPP achieves high performance for the overall water splitting.
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Affiliation(s)
- Yan-Chen Liu
- Sun Yat-Sen University, School of Chemistry, CHINA
| | | | | | - Pei-Qin Liao
- Sun Yat-Sen University, School of Chemistry, No. 135, Xingang Xi Road, 510275, Guangzhou, CHINA
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7
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Zhao ZH, Huang JR, Liao PQ, Chen XM. Isolated Tin(IV) Active Sites for Highly Efficient Electroreduction of CO 2 to CH 4 in Neutral Aqueous Solution. Angew Chem Int Ed Engl 2023; 62:e202301767. [PMID: 36823343 DOI: 10.1002/anie.202301767] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 02/05/2023] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 02/25/2023]
Abstract
The development of efficient electrocatalysts with non-copper metal sites for electrochemical CO2 reduction reactions (eCO2 RR) to hydrocarbons and oxygenates is highly desirable, but still a great challenge. Herein, a stable metal-organic framework (DMA)4 [Sn2 (THO)2 ] (Sn-THO, THO6- = triphenylene-2,3,6,7,10,11-hexakis(olate), DMA = dimethylammonium) with isolated and distorted octahedral SnO6 2- active sites is reported as an electrocatalyst for eCO2 RR, showing an exceptional performance for eCO2 RR to the CH4 product rather than the common products formate and CO for reported Sn-based catalysts. The partial current density of CH4 reaches a high value of 34.5 mA cm-2 , surpassing most reported copper-based and all non-Cu metal-based catalysts. Our experimental and theoretical results revealed that the isolated SnO6 2- active site favors the formation of key *OCOH species to produce CH4 and can greatly inhibit the formation of *OCHO and *COOH species to produce *HCOOH and *CO, respectively.
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Affiliation(s)
- Zhen-Hua Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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8
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Zhao ZH, Huang JR, Liao PQ, Chen XM. Isolated Tin(IV) Active Sites for Highly Efficient Electroreduction of CO2 to CH4 in Neutral Aqueous Solution. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202301767] [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: 02/25/2023]
Affiliation(s)
| | | | - Pei-Qin Liao
- Sun Yat-Sen University School of Chemistry No. 135, Xingang Xi Road 510275 Guangzhou CHINA
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Zhang MD, Huang JR, Shi W, Liao PQ, Chen XM. Synergistic Effect in a Metal-Organic Framework Boosting the Electrochemical CO 2 Overall Splitting. J Am Chem Soc 2023; 145:2439-2447. [PMID: 36657974 DOI: 10.1021/jacs.2c11597] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
It is a very important but still challenging task to develop bifunctional electrocatalysts for highly efficient CO2 overall splitting. Herein, we report a stable metal-organic framework (denoted as PcNi-Co-O), composed of (2,3,9,10,16,17,23,24-octahydroxyphthalocyaninato)nickel(II) (PcNi-(O-)8) ligands and the planar CoO4 nodes, for CO2 overall splitting. When working as both cathode and anode catalysts (i.e., PcNi-Co-O||PcNi-Co-O), PcNi-Co-O achieved a commercial-scale current density of 123 mA cm-2 (much higher than the reported values (0.2-12 mA cm-2)) with a Faradic efficiency (CO) of 98% at a low cell voltage of 4.4 V. Mechanism studies suggested the synergistic effects between two active sites, namely, (i) electron transfer from CoO4 to PcNi sites under electric fields, resulting in the raised oxidizability/reducibility of CoO4/PcNi sites, respectively; (ii) the energy-level matching of cathode and anode catalysts can reduce the energy barrier of electron transfer between them and improve the performance of CO2 overall splitting.
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Affiliation(s)
- Meng-Di Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wen Shi
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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10
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Zhu HL, Huang JR, Liao PQ, Chen XM. Rational Design of Metal-Organic Frameworks for Electroreduction of CO 2 to Hydrocarbons and Carbon Oxygenates. ACS Cent Sci 2022; 8:1506-1517. [PMID: 36439306 PMCID: PMC9686201 DOI: 10.1021/acscentsci.2c01083] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 05/25/2023]
Abstract
Since CO2 can be reutilized by using renewable electricity in form of product diversity, electrochemical CO2 reduction (ECR) is expected to be a burgeoning strategy to tackle environmental problems and the energy crisis. Nevertheless, owing to the limited selectivity and reaction efficiency for a single component product, ECR is still far from a large-scale application. Therefore, designing high performance electrocatalysts is the key objective in CO2 conversion and utilization. Unlike most other types of electrocatalysts, metal-organic frameworks (MOFs) have clear, designable, and tunable catalytic active sites and chemical microenvironments, which are highly conducive to establish a clear structure-performance relationship and guide the further design of high-performance electrocatalysts. This Outlook concisely and critically discusses the rational design strategies of MOF catalysts for ECR in terms of reaction selectivity, current density, and catalyst stability, and outlines the prospects for the development of MOF electrocatalysts and industrial applications. In the future, more efforts should be devoted to designing MOF structures with high stability and electronic conductivity besides high activity and selectivity, as well as to develop efficient electrolytic devices suitable for MOF catalysts.
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Huang JR, Qiu XF, Zhao ZH, Zhu HL, Liu YC, Shi W, Liao PQ, Chen XM. Single‐Product Faradaic Efficiency for Electrocatalytic of CO2 to CO at Current Density Larger than 1.2 A cm−2 in Neutral Aqueous Solution by a Single‐Atom Nanozyme. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210985] [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: 11/11/2022]
Affiliation(s)
| | | | | | - Hao-Lin Zhu
- Sun Yat-Sen University School of Chemistry CHINA
| | - Yan-Chen Liu
- Sun Yat-Sen University School of Chemistry CHINA
| | - Wen Shi
- Sun Yat-Sen University School of Chemistry CHINA
| | - Pei-Qin Liao
- Sun Yat-Sen University School of Chemistry No. 135, Xingang Xi Road 510275 Guangzhou CHINA
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12
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Wang Y, Huang NY, Wang HY, Zhang XW, Huang JR, Liao PQ, Chen XM, Zhang JP. Local Weak Hydrogen Bonds Significantly Enhance CO
2
Electroreduction Performances of a Metal–Organic Framework. CCS Chem 2022. [DOI: 10.31635/ccschem.022.202202062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yu Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Hao-Yu Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Xue-Wen Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275
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13
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Huang DS, Zhu HL, Zhao ZH, Huang JR, Liao PQ, Chen XM. A Stable and Low-Cost Metal-Azolate Framework with Cyclic Tricopper Active Sites for Highly Selective CO 2 Electroreduction to C 2+ Products. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01681] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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)
- Da-Shuai Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zhen-Hua Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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14
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Zhao ZH, Zhu HL, Huang JR, Liao PQ, Chen XM. Polydopamine Coating of a Metal–Organic Framework with Bi-Copper Sites for Highly Selective Electroreduction of CO 2 to C 2+ Products. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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)
- Zhen-Hua Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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15
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Qiu XF, Huang JR, Yu C, Zhao ZH, Zhu HL, Ke Z, Liao PQ, Chen XM. A Stable and Conductive Covalent Organic Framework with Isolated Active Sites for Highly Selective Electroreduction of Carbon Dioxide to Acetate. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206470] [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: 11/11/2022]
Affiliation(s)
| | | | - Can Yu
- Chinses Academy of Science Institute of High Energy Physics CHINA
| | | | - Hao-Lin Zhu
- Sun Yat-Sen University School of Chemistry CHINA
| | - Zhuofeng Ke
- Sun Yat-sen University School of Chemistry CHINA
| | - Pei-Qin Liao
- Sun Yat-Sen University School of Chemistry No. 135, Xingang Xi Road 510275 Guangzhou CHINA
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Zhao ZH, Zheng K, Huang NY, Zhu HL, Huang JR, Liao PQ, Chen XM. A Cu(111)@metal-organic framework as a tandem catalyst for highly selective CO 2 electroreduction to C 2H 4. Chem Commun (Camb) 2021; 57:12764-12767. [PMID: 34730142 DOI: 10.1039/d1cc05376k] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Here, we report an improved tandem catalytic mechanism for electroreduction of CO2 to C2H4. Cu(111) nanoparticles with an average size of 5.5 ± 0.9 nm were anchored on a conductive Cu-based metal-organic framework (Cu-THQ) by in situ electrochemical synthesis. Compared to Cu(111) nanoparticles, the C2H4 faradaic efficiency of the tandem catalyst Cu(111)@Cu-THQ was increased doubly.
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Affiliation(s)
- Zhen-Hua Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Kai Zheng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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Huang NY, He H, Liu S, Zhu HL, Li YJ, Xu J, Huang JR, Wang X, Liao PQ, Chen XM. Electrostatic Attraction-Driven Assembly of a Metal-Organic Framework with a Photosensitizer Boosts Photocatalytic CO 2 Reduction to CO. J Am Chem Soc 2021; 143:17424-17430. [PMID: 34637290 DOI: 10.1021/jacs.1c05839] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Reducing CO2 into fuels via photochemical reactions relies on highly efficient photocatalytic systems. Herein, we report a new and efficient photocatalytic system for CO2 reduction. Driven by electrostatic attraction, an anionic metal-organic framework Cu-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) as host and a cationic photosensitizer [Ru(phen)3]2+ (phen = 1,10-phenanthroline) as guest were self-assembled into a photocatalytic system Ru@Cu-HHTP, which showed high activity for photocatalytic CO2 reduction under laboratory light source (CO production rate of 130(5) mmol g-1 h-1, selectivity of 92.9%) or natural sunlight (CO production rate of 69.5 mmol g-1 h-1, selectivity of 91.3%), representing the remarkable photocatalytic CO2 reduction performance. More importantly, the photosensitizer [Ru(phen)3]2+ in Ru@Cu-HHTP is only about 1/500 in quantity reported in the literature. Theoretical calculations and control experiments suggested that the assembly of the catalysts and photosensitizers via electrostatic attraction interactions can provide a better charge transfer efficiency, resulting in high performance for photocatalytic CO2 reduction.
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Affiliation(s)
- Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hai He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - ShouJie Liu
- Chemistry and Chemical Engineering of Guangdong Laboratory, Shantou 515063, China
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ying-Jian Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jing Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xi Wang
- Department of Physics, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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Zhu HL, Huang JR, Zhang XW, Wang C, Huang NY, Liao PQ, Chen XM. Highly Efficient Electroconversion of CO 2 into CH 4 by a Metal–Organic Framework with Trigonal Pyramidal Cu(I)N 3 Active Sites. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02980] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xue-Wen Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Chao Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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Qiu XF, Zhu HL, Huang JR, Liao PQ, Chen XM. Highly Selective CO2 Electroreduction to C2H4 Using a Metal–Organic Framework with Dual Active Sites. J Am Chem Soc 2021; 143:7242-7246. [DOI: 10.1021/jacs.1c01466] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xiao-Feng Qiu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hao-Lin Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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Wu TZ, Liang X, Li JQ, Li T, Yang LL, Li J, Xin JJ, Jiang J, Shi DY, Ren KK, Hao SR, Jin LF, Ye P, Huang JR, Xu XW, Gao ZL, Duan ZP, Han T, Wang YM, Wang BJ, Gan JH, Fen TT, Pan C, Chen YP, Huang Y, Xie Q, Lin SM, Chen X, Xin SJ, Li LJ, Li J. [Establishment of clinical features and prognostic scoring model in early-stage hepatitis B-related acute-on-chronic liver failure]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:441-445. [PMID: 32403883 DOI: 10.3760/cma.j.cn501113-20200316-00116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical characteristics and establish a corresponding prognostic scoring model in patients with early-stage clinical features of hepatitis B-induced acute-on-chronic liver failure (HBV-ACLF). Methods: Clinical characteristics of 725 cases with hepatitis B-related acute-on-chronic hepatic dysfunction (HBV-ACHD) were retrospectively analyzed using Chinese group on the study of severe hepatitis B (COSSH). The independent risk factors associated with 90-day prognosis to establish a prognostic scoring model was analyzed by multivariate Cox regression, and was validated by 500 internal and 390 external HBV-ACHD patients. Results: Among 725 cases with HBV-ACHD, 76.8% were male, 96.8% had cirrhosis base,66.5% had complications of ascites, 4.1% had coagulation failure in respect to organ failure, and 9.2% had 90-day mortality rate. Multivariate Cox regression analysis showed that TBil, WBC and ALP were the best predictors of 90-day mortality rate in HBV-ACHD patients. The established scoring model was COSS-HACHADs = 0.75 × ln(WBC) + 0.57 × ln(TBil)-0.94 × ln(ALP) +10. The area under the receiver operating characteristic curve (AUROC) of subjects was significantly higher than MELD, MELD-Na, CTP and CLIF-C ADs(P < 0.05). An analysis of 500 and 390 cases of internal random selection group and external group had similar verified results. Conclusion: HBV-ACHD patients are a group of people with decompensated cirrhosis combined with small number of organ failure, and the 90-day mortality rate is 9.2%. COSSH-ACHDs have a higher predictive effect on HBV-ACHD patients' 90-day prognosis, and thus provide evidence-based medicine for early clinical diagnosis and treatment.
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Affiliation(s)
- T Z Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - X Liang
- Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
| | - J Q Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - T Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - L L Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J J Xin
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
| | - J Jiang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
| | - D Y Shi
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
| | - K K Ren
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - S R Hao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - L F Jin
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - P Ye
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J R Huang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - X W Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Z L Gao
- Department of Liver and Infectious Disease, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510000, China
| | - Z P Duan
- Department of Liver and Infectious Diseases, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, China
| | - T Han
- Department of Liver and Infectious Diseases, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Y M Wang
- Department of Liver and Infectious Disease, The First Hospital Affiliated To AMU, Chongqing 400038, China
| | - B J Wang
- Department of Liver and Infectious Disease, Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, China
| | - J H Gan
- Department of Liver and Infectious Disease, The First Affilated Hospital of Soochow University, Suzhou 215006, China
| | - T T Fen
- Department of Liver and Infectious Disease, The First Affilated Hospital of Soochow University, Suzhou 215006, China
| | - C Pan
- Department of Liver and Infectious Diseases, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350005, China
| | - Y P Chen
- Department of Liver and Infectious Diseases, The First Affilated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Y Huang
- Department of Liver and Infectious Diseases, Xiangya Hospital Central South University, Changsha 410013, China
| | - Q Xie
- Department of Liver and Infectious Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - S M Lin
- Department of Liver and Infectious Diseases, First Affilated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - X Chen
- Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China; Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
| | - S J Xin
- Department of liver and Infectious Diseases, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - L J Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Precision Medicine Center, Taizhou Central Hospital, Taizhou University Medical School, Taizhou 318000, China
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Xing F, Li S, Zhang JJ, Sun CY, Huang JR, Gao ZL, Zhu TT, Zhao Q, Zhang H, Liu CH. [Observation of the therapeutic and characteristic effects of terlipressin on refractory cirrhotic ascites]. Zhonghua Gan Zang Bing Za Zhi 2020; 27:982-988. [PMID: 31941260 DOI: 10.3760/cma.j.issn.1007-3418.2019.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the therapeutic effect of terlipressin on refractory ascites (RA) in cirrhosis, and its role and impact on acute kidney injury (AKI). Methods: A non-randomized controlled clinical trial data of 111 hospitalized cases of liver cirrhosis accompanied with RA was collected from Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Zhongshan Hospital of Hubei Province, The First Affiliated Hospital of Zhengzhou University, The First Affiliated Hospital of Medical School of Zhejiang University, and People's Hospital of Pudong New Area of Shanghai between March 2015 and March 2017. 26 cases of conventional treatment group (control group) were divided into two subgroups: RA without AKI (RA-NAKI) and RA with AKI (RA-AKI), and each subgroup consisted 13 cases. Patients with bacterial infection were treated with diuretics, albumin supplementation and antibiotics. 85 cases were presented in terlipressin combined treatment group, of which 27 cases were of RA-NAKI and 58 cases were of RA-AKI. Control group was injected terlipressin 1mg of intravenous drip or static push (once q6 h ~ 12 h) for more than 5 days. The treatment duration lasted for 2 weeks with 4 weeks of follow-up. Body weight, 24-hour urine volume, abdominal circumference, mean arterial pressure (MAP), liver and kidney function, anterior hepatic ascites, deepest point of ascites, and ultrasonographic detection of ascites in supine position before treatment, one and two weeks after treatment and 4 weeks after follow-up were compared. Count data were tested by χ (2). Samples of four groups at baseline were compared. One-way analysis of variance was used for normal distribution data and Kruskal-Wallis H test for non-normal distribution data. Repeated measures analysis of variance was used to compare the difference in efficacy between different time points before and after treatment in the group. The LSD method of one-way ANOVA was used to compare the two groups. A t-test of independent samples was used to compare the efficacy of different time series between the two groups. Mann-Whitney rank- sum test was used to compare the data of non-normal distribution between the two groups. Results: (1) Baseline data were compared among 4 subgroups of terlipressin RA-NAKI and control RA-AKI. Control group age was higher than that of terlipressin group, and the serum creatinine (SCr) of the RA-AKI group was higher than RA-NAKI group, and there was no significant difference in the rest of the baseline data and the combined medication (P > 0.05). (2) An intra-group comparison between control and trelipressin before and after treatment showed that all patients had lower body mass, abdominal circumference and deepest ascites, and higher serum albumin (P < 0.05). 24-hour urine volume and MAP was significantly increased in the terlipressin group, while the pre-ascites, SCr and child Turcotte Pugh (CTP) scores were decreased. Body weight, abdominal circumference, pre-ascites, and deepest ascites of the terlipressin group were decreased, while MAP was increased during the treatment and follow-up periods. The differences were statistically significant when compared with the control group at the same time (P < 0.05). There was a statistically significant difference in the increase of 24-h urine volume in the terlipressin group compared with the control group (P < 0.05). The decrease in SCr and CTP in the terlipressin group after 2 weeks of treatment and 4 weeks of follow-up was statistically significant compared with the control group (P < 0.05). (3) Among the two subgroups of RA-AKI and RA-NAKI in the terlipressin group, the baseline SCr value of the former was higher than that of the latter. After treatment, the body weight, abdominal circumference, pre-ascites, deepest ascites and CTP scores were decreased. In the RA-AKI group, 24-hour urine volume, MAP, SCr and serum albumin concentration were significantly increased. The difference between the two subgroups before and after treatment was compared, and the body weight of RA-AKI group at 1, 2 weeks of treatment and 4 weeks of follow-up was significantly lower than RA-NAKI group, which were (- 2.3 ± 0.2 vs. - 1.5 ± 0.2) kg, (- 4.1 ± 0.2 vs. - 2.6 ± 0.2) kg, (- 4.2 ± 0.3 vs. - 2.4 ± 0.3) kg, respectively. RA-NAKI group urine volume was significantly increased at 2 weeks of treatment and 4 weeks of follow-up, which was (468 ± 42 vs. 110 ± 131) ml, (272 ± 34 ml vs. 11 ± 112) ml, respectively. SCr reduction (18.3 ± 4.7 vs. 0.9 ± 2.4) µmol/l at 4 weeks of follow-up was apparent in RA-NAKI group, and the difference was statistically significant (P < 0.05). Conclusion: Addition of terlipressin to conventional treatment may significantly increase MAP, 24-h urine volume, improve renal function and promote ascites resolution in patients with refractory cirrhotic ascites. Moreover, its combination effect is more obvious in AKI patients, and adverse reactions are mild.
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Affiliation(s)
- F Xing
- Second Department of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine; Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - S Li
- Department of Gastroenterology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai 201900, China
| | - J J Zhang
- Department of Integrated Liver Diseases, Zhongshan Hospital of Hubei Province, Wuhan 430033, China
| | - C Y Sun
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J R Huang
- Department of Infectious Diseases, The First Affiliated Hospital, Zhejiang University, Hangzhou 310003, China
| | - Z L Gao
- Department of Gastroenterology, Pudong New Area Hospital, Shanghai 201299, China
| | - T T Zhu
- Second Department of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine; Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Q Zhao
- Second Department of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine; Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - H Zhang
- Second Department of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine; Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - C H Liu
- Second Department of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine; Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai 201203, China; Shanghai Innovation Center of TCM Health Service, Shanghai 201203, China
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Huang JR. [Current status and perspectives of artificial liver for treatment of acute-on-chronic liver failure]. Zhonghua Gan Zang Bing Za Zhi 2017; 24:935-939. [PMID: 28073418 DOI: 10.3760/cma.j.issn.1007-3418.2016.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This article briefly introduces the mechanisms and characteristics of several new artificial liver therapies, the advantages and disadvantages of different sites for placement of the drainage tube, and commonly used anticoagulation methods, as well as the prevention and treatment of common complications of the artificial liver support system. The future direction of development of artificial liver includes new regimens for "individualized treatment" based on patients' conditions, combination of non-biological artificial liver and biological active ingredients, and development of efficient and perfected hybrid bioartificial liver, which can further improve the therapeutic outcome of liver failure.
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Affiliation(s)
- J R Huang
- Department of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
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Yang FJ, Peng L, Liu YY, Gao ZL, Han T, Huang JR. [Research advances in diagnosis and treatment of liver failure in 2016]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:94-99. [PMID: 28297793 DOI: 10.3760/cma.j.issn.1007-3418.2017.02.003] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Liver failure has various clinical types, a complex pathogenesis, and rapid disease progression, as well as a high mortality rate. Liver failure caused by hepatitis B virus infection is the most common type in China with severe conditions, various complications, and a mortality rate as high as 40%-90%. Invasive fungal disease secondary to acute-on-chronic liver failure can affect patients' prognosis and increase mortality rate. This article introduces the research advances in hepatitis B-related liver failure, artificial liver, and invasive fungal disease secondary to acute-on-chronic liver failure in 2016.
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Affiliation(s)
- F J Yang
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - L Peng
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Y Y Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
| | - Z L Gao
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - T Han
- Department of Hepatology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - J R Huang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
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Du WB, Li LJ, Huang JR, Yang Q, Liu XL, Li J, Chen YM, Cao HC, Xu W, Fu SZ, Chen YG. Effects of artificial liver support system on patients with acute or chronic liver failure. Transplant Proc 2006; 37:4359-64. [PMID: 16387120 DOI: 10.1016/j.transproceed.2005.11.044] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [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
AIMS Acute on chronic liver failure (AoCLF) is associated with a high mortality rate. Artificial liver support system (ALSS) is useful to bridge patients with liver failure to liver transplantation or to regenerate their own livers. The aims of this prospective study were to investigate the effects of ALSS on clinical manifestations, liver function, and 30-day survival to probe the factors related to mortality in patients with AoCLF. METHODS In this study, 338 enrolled patients with AoCLF who received ALSS treatment for 1 to 8 sessions, were compared with 312 patients treated with conventional medications. RESULTS Clinical manifestations and liver functions were significantly improved, namely, decreased levels of serum transaminases, total bilirubin, and bile acid, as well as increased levels of serum albumin following ALSS treatment. The 30-day survival rates of the patients who received ALSS versus controls were 47.9% versus 34.6%, respectively (P = .01). The MELD score and the stage of hepatic encephalopathy were highly associated with mortality (P < .001), but the sessions of ALSS showed a positive relation to the 30-day survival (P < .05). CONCLUSIONS ALSS appears to be efficacious and safe for the treatment of patients with AoCLF. Both model for end-stage liver disease (MELD) score and hepatic encephalopathy are useful to predict the mortality of patients.
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Affiliation(s)
- W B Du
- Key Laboratory of Infectious Diseases, Ministry of Public Health of China, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Huang JR, Gao YQ, Elie N. [A study of artemether combined with primaquine in the treatment of falciparum malaria]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:308-9. [PMID: 12572052] [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: 02/28/2023]
Abstract
OBJECTIVE To evaluate the efficacy and side effects of artemether combined with primaquine in the treatment of falciparum malaria. METHODS Randomization and comparison methods were used in 121 falciparum malaria cases in the Republic of Central Africa. Sixty-one cases were treated with artemether combined with primaquine (Group A used artemether orally, Group B used artemether intramuscularly). And 60 cases received single artemether (Group C used artemether orally, Group D used artemether intramuscularly) were taken as control. RESULTS In Group A and B the mean fever clearance time were 47.6 +/- 15.7 and 36.9 +/- 10.7 hours, clinical cure rates 84.4% and 100%, relapse rates 6.3% and 3.4%, respectively. In Group C and D the mean fever clearance time were 48.2 +/- 18.4 and 42.2 +/- 9.5 hours, clinical cure rates 90.1% and 96.3%, relapse rates 21.2% and 18.5%, respectively. Side effects in cases of all groups were mild. CONCLUSION Artemether combined with primaquine and single artemether(via both routes) showed good therapeutic effects in falciparum malaria cases, while artemether combined with primaquine was more effective than single artemether in reducing relapes rate of malaria.
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Affiliation(s)
- J R Huang
- First Affiliated Hospital, Zhejiang University of Medical College, Hangzhou 310003
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Huang JR, Li H. [Comparison of three approaches to prevent falciparum malaria in Chinese who worked in an African country with high endemicity of malaria]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:255. [PMID: 12571981] [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: 02/28/2023]
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27
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Huang JR, Ford HD, Tatam RP. Phase-stepped speckle shearing interferometer by source wavelength modulation. Opt Lett 1996; 21:1421-1423. [PMID: 19881678 DOI: 10.1364/ol.21.001421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Phase stepping by wavelength modulation of the optical source is demonstrated in a path-length unbalanced shearing interferometer. A magnification difference, which accompanies the path-length imbalance in the interferometer, introduces an unwanted radial shear, which is shown to be compensated by inclusion of a block of high-refractive-index material in the longer interferometer arm. The block also increases the phase shift obtained for a given wavelength change. The phase-stepping technique is demonstrated with a three-step algorithm to measure out-of-plane strain on a f lat metal plate.
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Zhu HH, Huang JR, Mazela J, Elias J, Tseng L. Progestin stimulates the biosynthesis of fibronectin and accumulation of fibronectin mRNA in human endometrial stromal cells. Hum Reprod 1992; 7:141-6. [PMID: 1533646 DOI: 10.1093/oxfordjournals.humrep.a137606] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [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: 12/27/2022] Open
Abstract
Fibronectin is a major component of decidual basement membrane. In the present study, we have investigated the effect of progestin on the synthesis and secretion of fibronectin in human endometrial stromal cells. Stromal cells were isolated during the menstrual cycle and cultured in RPMI-1640 with 2% fetal calf serum supplemented with progesterone or medroxyprogesterone acetate (MPA) in a long-term culture system. Indirect immunofluorescent staining showed that fibronectin was uniformly distributed in the intracellular and extracellular regions of stromal cells treated with MPA for 14 days. The biosynthesis and secretion of this protein and the accumulation of cellular fibronectin mRNA were studied after various culture periods. Cells were pulse-labelled with [35S]methionine to determine the amount of newly synthesized fibronectin secreted into the culture medium. A monoclonal antibody (Mab) identified human fibronectin on SDS-polyacrylamide gel electrophoresis (SDS-PAGE), showing a predominant band (Mr 230-250 kDa) which migrated with authentic fibronectin run in parallel. In six endometrial specimens, the amount of radioactivity incorporated as [35S]fibronectin was increased by progestin. Maximal stimulation occurred after 6 days treatment with MPA. Culture beyond 16 days reduced the rate of synthesis and secretion to 40% of the maximum. The effect of progestin was dose dependent with 0.02, 0.2 and 1 microM progesterone, producing 2.0, 3.8 and 11-fold increases respectively, over the control. Medroxyprogesterone acetate was more effective than progesterone, the maximal response (10-fold increase) being achieved at 0.02 microM MPA.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H H Zhu
- Department of Obstetrics and Gynecology, School of Medicine, State University of New York, Stony Brook 11794
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Bailin G, Huang JR. Fluorescence changes of 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole bound to thiol groups of gizzard myosin. Biochem Int 1991; 23:895-904. [PMID: 1883398] [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: 12/29/2022]
Abstract
The fluorescence intensity of gizzard myosin that incorporated about 2 mol of 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole (NBD-C1) at 0.6 M KC1 was quenched at low concentrations of MgATP or in the presence of F-actin. The observed quenching was reduced at high MgATP concentrations. The half maximal change in quenched fluorescence was shifted from 7.5 microM to 25 microM MgATP for NBD-myosin at 0.15 M KC1. The fluorescent label NBD-C1 can be used to detect changes in the conformation of gizzard myosin.
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Affiliation(s)
- G Bailin
- Department of Molecular Biology UMDNJ-School of Osteopathic Medicine, Stratford 08084
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30
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Zhu HH, Huang JR, Mazella J, Rosenberg M, Tseng L. Differential effects of progestin and relaxin on the synthesis and secretion of immunoreactive prolactin in long term culture of human endometrial stromal cells. J Clin Endocrinol Metab 1990; 71:889-99. [PMID: 2144857 DOI: 10.1210/jcem-71-4-889] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PRL secretion from human endometrium is a continuous process extending from the luteal phase of the menstrual cycle throughout the entire gestational stage. We have developed a long term primary cell culture system to elucidate the hormonal requirements for this sustained production of PRL. The effects of medroxyprogesterone acetate (MPA), progesterone, and relaxin (RLX) on the production of immunoreactive PRL were investigated. MPA stimulated cell growth and PRL production rate during days 5-20 of culture. Progesterone was 20-40% less effective in stimulating PRL than MPA. Stimulation of PRL was continued 1-2 weeks after MPA withdrawal. Relaxin did not promote cell growth. However, it induced the PRL production which fluctuated during the long term culture. The maximal response to RLX was 2- to 3-fold higher or similar to that of MPA. Only five of nine endometrial specimens examined responded to RLX alone. The effect of MPA plus RLX was significantly greater than that of MPA or RLX alone. The highest production rate was shown in cells treated with MPA and then RLX in sequence. After a month of culture, the production rates (micrograms of PRL per 0.1 mg cell DNA/day) under various culture conditions (A, control; B, MPA; C, MPA for 10-15 days and no hormone afterward; D, both MPA and RLX; and E, MPA and RLX in sequence) were: A, about 0-0.01 (n = 12); B, 2.5 +/- 0.9 (n = 8); C, 4.8 +/- 2.5 (n = 8); D, 5.7 +/- 3.0 (n = 5); and E, 11 +/- 3.7 (n = 7); mean +/- SD; n, number of specimens). Endometrial stromal cells were incubated with [35S]methionine, and [35S]immunoreactive PRL and other secretory proteins were analyzed on sodium dodecyl sulfate-polyacrylamide gel electrophoresis to characterize the size and isoforms of immunoreactive PRL. PRL was one of the five major secretory proteins (23-25K, 32K, 42K, 78K, and 150K daltons, sodium dodecyl sulfate-polyacrylamide gel electrophoresis under reducing condition) induced by MPA and RLX in endometrial stromal cells. More than 90% of immunoreactive PRL was secreted into the medium. The apparent mol wt of immunoreactive PRL were 21K, 23K (the predominant size), and 25K daltons. Results obtained from the incorporation of [14C]glucosamine into immunoreactive PRL indicated that both 23K and 25K PRL contained glycosylated PRL. A 45K-dalton glycosylated immunoreactive PRL was also present in the culture medium.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- H H Zhu
- Department of Obstetrics and Gynecology, State University of New York, Stony Brook 11794
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31
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Abstract
Chicken gizzard myosin treated with 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) resulted in a 65% inhibition of the K(+)-ATPase (myosin ATP phosphohydrolase (actin translocating), EC 3.6.1.32) activity and 3.5 mol of the reagent was bound per 4.7 x 10(5) g protein. The labeling was limited to the heavy chain region and none of the light chains were lost. MgATP had no effect on the inactivation or labeling pattern. Thiolysis of NBD-myosin with dithiothreitol restored the K(+)-ATPase activity and concurrently, 1 mol of the NBD group was removed from the heavy chain region. Cysteine residues were modified in NBD-myosin at sites other than the active site when the enzyme activity was inhibited. There was a difference in the extent of NBD-Cl modification of gizzard myosin at 0.6 M KCl (6 S elongated state) when compared to that at 0.15 M KCl (10 S folded state). This was also seen in the heavy meromyosin-like chymotryptic fragments and tryptic fragments of NBD-myosin. The reagent NBD-Cl can detect changes in the conformation of gizzard myosin by way of its reaction with thiol groups of the heavy chain region.
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Affiliation(s)
- G Bailin
- Department of Biochemistry, University of Medicine and Dentistry of New Jersey, School of Osteopathic Medicine, Piscataway 08854-5635
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32
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Bailin G, Huang JR. Fluorescence properties of the Ca2+,Mg2(+)-ATPase protein of sarcoplasmic reticulum labeled with 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole. FEBS Lett 1990; 259:254-6. [PMID: 2136730 DOI: 10.1016/0014-5793(90)80021-a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 12/30/2022]
Abstract
The fluorescence intensity of the Ca2+,Mg2(+)-ATPase protein of rabbit skeletal sarcoplasmic reticulum that incorporated about 2 mol of 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) was enhanced at high MgATP concentrations with or without 50 microM calcium. The observed enhancement indicates that the fluorophore, NBD-Cl, can detect conformational changes in the ATPase protein.
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Affiliation(s)
- G Bailin
- Department of Biochemistry, UMDNJ-School of Osteopathic Medicine, Piscataway 08854-5635
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Abstract
Confluent human endometrial stromal cells were cultured in medium with no hormone or supplemented with medroxyprogesterone acetate (MPA), estradiol (E2), and porcine relaxin (RLX) for 5 days. These stromal cells were then labeled with [35S]methionine for 3 h. The radioactive proteins in the particulate fraction of cell homogenate were extracted by detergent and incubated with antisera to purified placental aromatase cytochrome P-450 (P-450arom) and NADPH-cytochrome P-450 reductase to isolate the radio-labeled aromatase enzyme components. Analysis of the radio-labeled protein, isolated by antibody to the cytochrome P-450arom from different preparations (P45FBIII or R-8-2) showed a major band at molecular weight 54k on SDS polyacrylamide gel electrophoresis (SDS-PAGE). The intensity of 54k band was stronger in hormone treated stromal cells than that of control in parallel with the increase of aromatase activity. The radio-labeled protein isolated by anti-NADPH cytochrome P-450 reductase, REDFBIV, showed a major band at the molecular weight 73k on SDS-PAGE with comparable intensity in control and hormone treated samples. Thus, the apparent molecular weights of endometrial cytochrome P-450arom and cytochrome P-450 reductase were identical to placental aromatase enzyme system. When a secretory endometrium and a decidua were labeled with [35S]methionine, the cytochrome P-450arom was detected only in the decidua. NADPH cytochrome P-450 reductase was detected both in the endometrium and the decidua. These results show that antisera to placental aromatase enzyme system cross reacts with the endometrial aromatase enzyme components. The synthesis of cytochrome P-450arom was stimulated by MPA, E2 and RLX while the synthesis of the NADPH-cytochrome P-450 reductase aromatase component was not affected by the hormone.
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Affiliation(s)
- J R Huang
- Department of Obstetrics and Gynecology, School of Medicine, State University of New York, Stony Brook 11794
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Abstract
Previous studies have shown that the production of prolactin (PRL) is increased in human endometrial stromal cells cultured with medroxyprogesterone acetate (MPA) for 3-5 days. In the present study, we have investigated the effect of prolonged treatment of progestin and anti-progestin, RU 486, on the production and synthesis of PRL. Stromal cells were isolated from human endometrium obtained from non-pregnant women and cultured for 20-30 days in medium RPMI 1640 with 2% fetal calf serum or supplemented with MPA, RU 486, alone or in sequence. The PRL content in medium was measured by radioimmunoassay. The production rate was estimated from the PRL content in medium accumulated in 24 h. The PRL production rate was progressively increased in stromal cells continuously treated with MPA for 30 days (greater than 100-fold over the control value, i.e. 0-0.01 microgram/0.1 mg cell DNA/day). RU 486 alone had no effect on the production of PRL. However, the production of PRL was increased by MPA in stromal cells pretreated with RU 486 indicating that the effect of RU 486 is reversible. When stromal cells were treated with MPA and RU 486 sequentially, RU 486 stimulated the PRL production (approximately 2-fold over the MPA-treated cells) for 2-3 days and then reduced to basal levels over a 5-day period. The stimulatory and inhibitory effects of RU 486 on PRL production in stromal cells pretreated with progestin was also observed in the rate of synthesis of PRL estimated by incubating the stromal cells with [35S]methionine and immuno-isolating the [35S]PRL with anti-PRL.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- G Chen
- Department of Obstetrics and Gynecology, State University of New York, Stony Brook 11794
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Bailin G, Huang JR. Modification of the (Ca2+ + Mg2+)-ATPase protein of sarcoplasmic reticulum with 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole. Biochim Biophys Acta 1989; 995:122-32. [PMID: 2522798 DOI: 10.1016/0167-4838(89)90070-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The (Ca2+ + Mg2+)-ATPase (ATP phosphohydrolase (Ca2+-transporting), EC 3.6.1.38) protein of rabbit skeletal sarcoplasmic reticulum (SR) rapidly incorporated 2 mol of 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) per 10(5) g of protein with little change in the Ca2+-dependent ATPase activity. When 2 additional mol of the reagent were bound the Ca2+-ATPase, activity was inhibited. The same pattern was found for modified intact SR and the Ca2+ uptake ability was inhibited. MgATP, CaATP and MgADP protected the Ca2+-ATPase activity concurrent with a decrease of about 1 mol of the NBD group per 10(5) g protein, but the Ca2+ uptake ability was not protected. Calcium alone had no effect on the modification. The modified ATPase protein or SR formed non-serial oligomers or aggregates, but the ATPase protein remained the predominant species present. In the presence of MgATP, oligomer formation was reduced partially but the major changes in the Ca2+-ATPase activity were due to the modification of the ATPase monomer. Thiolysis of the NBD-ATPase protein with dithiothreitol did not restore the Ca2+-ATPase activity, although more than 1 mol of the NBD group was removed from cysteine residues. Cysteine residues were modified in the NBD-ATPase protein or SR when the enzyme activity was inhibited. Trypsin digestion of NBD-SR or its ATPase protein released the A, B, A1, and A2 fragments. The A fragment and its subfragment A2 contained most of the label. Substrate MgATP protection studies showed that the A1 and A2 fragments were involved in maintaining the Ca2+-ATPase activity. Reagent-induced conformational changes of these fragments rather than direct active site group labeling accounted for the loss of ATPase activity.
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Affiliation(s)
- G Bailin
- Department of Biochemistry, University of Medicine and Dentistry of New Jersey, School of Osteopathic Medicine, Piscataway 08854-5635
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36
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Huang JR, Chen CL, Lin CT, Chen CY, Wang PY, Shin TP. [Pulmonary teratoma]. Gaoxiong Yi Xue Ke Xue Za Zhi 1988; 4:700-6. [PMID: 3075000] [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: 01/04/2023]
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37
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Chen GA, Huang JR, Tseng L. The effect of relaxin on cyclic adenosine 3',5'-monophosphate concentrations in human endometrial glandular epithelial cells. Biol Reprod 1988; 39:519-25. [PMID: 2848594 DOI: 10.1095/biolreprod39.3.519] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [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: 01/02/2023] Open
Abstract
The effects of relaxin (RLX), forskolin (Fk), and 4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone (Ro, a phophodeisterase inhibitor) on the accumulation of cyclic adenosine 3',5'-monophosphate (cAMP) in human endometrial glandular epithelial cells were studied. Epithelial glands were isolated from the endometrium by digesting the viable tissue fragments with collagenase. The epithelial glands were incubated with Ro, RLX, and Fk separately or in combination. The amount of cAMP was determined at the end of incubation. A moderate increase in cAMP content was observed in epithelial glands incubated with Ro alone. Accumulation of cAMP after incubation with RLX was observed only in the presence of Ro. Increase of cAMP content in response to RLX and Ro was time- and dose-dependent. The accumulation of cAMP was apparent in 5 min, reached the maximum after 15 min, and remained elevated for 17 h incubation. One nanogram per millileter RLX was effective to increase the cAMP content, with a maximal response at 100 ng/ml. The effect of Ro and the combined effect of Ro and RLX on cAMP accumulation were studied in epithelial glands of 20 endometrial specimens obtained during different stages of the menstrual cycle. When epithelial glands were incubated with Ro alone, the cAMP concentration in glands from proliferative endometria was 120 +/- 67 pmol/mg protein (n = 6, means +/- SD), significantly higher than that of secretory endometria, 42 +/- 37 (n = 14, p = 0.007). RLX and Ro caused an additional increase of cAMP accumulation, 2- to greater than 10-fold increase over the sample incubated with Ro alone. There was no significant difference between proliferative and secretory phases (500 +/- 410, n = 6, and 470 +/- 300, n = 14, respectively).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- G A Chen
- Department of Obstetrics and Gynecology, School of Medicine, State University of New York, Stony Brook 11794
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Abstract
Human decidua synthesizes and secretes PRL. We identified the PRL synthesized in endometrial stromal cells and investigated the effect of medroxyprogesterone acetate (MPA), estradiol (E2), porcine relaxin (RLX), and RU486, an antiprogestin, on PRL production by stromal cells from non-pregnant endometrium in primary culture. Stromal cells were isolated from proliferative and secretory endometria and individually cultured in nutrient medium or medium supplemented with different hormone(s). The immunoreactive PRL isolated from culture medium of hormone-stimulated stromal cells was identified and compared to pituitary PRL. Bio-Gel elution pattern and mol wt analysis on sodium dodecyl sulfate-polyacrylamide gel electrophoresis followed by immunoblotting showed that PRL produced by stromal cells had properties identical to those of pituitary PRL. In addition, PRL mRNA was identified in hormone-stimulated stromal cells using human pituitary PRL cDNA as a hybridization probe. Analysis of mRNA by Northern blotting showed that the size of PRL mRNA isolated from stromal cells was indistinguishable from that of PRL mRNA in human decidua and pituitary tissue. These results indicated that PRL measured in culture medium was synthesized de novo by stromal cells. The PRL content in culture medium was quantitated by RIA. The PRL production rate in stromal cells cultured without hormones ranged from 6-10 ng/day.mg cell protein. After 4-5 days of incubation with RLX or MPA alone, the PRL production rate increased about 2- to 3-fold over the control value. E2 alone had either no effect or slightly decreased the stromal cell PRL production rate. Stromal cells responded to 0.02 microM MPA, and the maximal response was at 0.1-1 microM MPA. A further increase in PRL production was found when stromal cells were treated with a combination of MPA and E2 and MPA, E2 and RLX. In the presence of MPA or MPA and E2, 0.1 ng/ml relaxin increased the PRL production rate. A potent progestin antagonist, RU486, inhibited PRL production in stromal cells treated with MPA, MPA and E2, or MPA and RLX. These results indicate that endometrial PRL production is regulated by the combined effects of steroid hormones (progestin and estrogen) and a peptide hormone (relaxin).
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Affiliation(s)
- J R Huang
- Department of Obstetrics and Gynecology, State University of New York, Stony Brook 11794
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Bailin G, Huang JR, Weingarten DS. Dinitrophenylated thiols in tryptic fragments of the heavy chain from chicken gizzard myosin. Biochem Int 1986; 13:455-65. [PMID: 3790140] [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: 01/07/2023]
Abstract
Trypsin digestion of phosphorylated and 3H-labeled dinitrophenylated chicken gizzard myosin released major fragments of Mr 29,000, 50,000 and 66,000 in a ratio of close to one to one. They contained 58% of the label bound to thiols of the heavy chains; 28% of the label was bound to the light chains. The heavy chain fragments of Mr 29,000 and Mr 66,000 were dinitrophenylated when the enzyme activity was inhibited. The 3H-labeled dinitrophenylated myosin alone followed a somewhat different pattern in that the label was bound to the light chains predominantly. Thiolysis of the phosphorylated and dinitrophenylated myosin with 2-mercaptoethanol restored the K+ -ATPase (ATP phosphohydrolase, EC 3.6.1.32) activity and the dinitrophenyl group was removed from the N-terminal fragment of Mr 29,000 of the heavy chain, predominantly. In contrast, restoration of the enzymic activity occurred in thiolyzed dinitrophenylated myosin alone when the label was removed from the light chains rather than the tryptic fragments of the heavy chain. Phosphorylation induced conformational changes in gizzard myosin that altered the reactivity of the thiols in fragments of the globular heavy chain region.
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