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Ji C, E T, Cheng Y, Yang S, Chen L, Wang D, Wang Y, Li Y. Preparation of Mn modified waste dander biochar and its effect on soil carbon sequestration. Environ Res 2024; 247:118147. [PMID: 38220076 DOI: 10.1016/j.envres.2024.118147] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/22/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
In order to reduce the mineralization of soil organic carbon (SOC) and enhance the ability of soil carbon sequestration. Mn-modified waste dander biochar (Mn-BC) was successfully prepared via impregnation and pyrolysis, and MnSO4 was formed on its surface. Mn-BC increases the carbon retention and reduces the emissions of CO2 and SO2 in way of forming CO, Mn-O-C bond and MnSO4. At the same time, the stability of the original biochar was reserved due to forming a conjugated structure (CC and pyridine-N bond), and the carbon sequestration content was increased to 25.63%. Importantly, the application of Mn-BC can directly regulate the transformation of microbial bacterial community and lead to create stable carbon dominant bacteria (Firmicutes). And the mineralization rate of SOC is reduced to 0.48 mg CO2/(g·d), together with an increased content of TOC (48.16%), thus the purpose of efficient carbon sequestration is achieved in soil.
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Affiliation(s)
- Cheng Ji
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Tao E
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China.
| | - Ying Cheng
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China
| | - Shuyi Yang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Liang Chen
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Daohan Wang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Yuanfei Wang
- Liaoning Huadian Environmental Testing Co., LTD, Jinzhou, 121013, Liaoning, China
| | - Yun Li
- Chemistry & Chemical Engineering of College Yantai University, Yantai, 264005, China.
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2
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Li S, Hao J, Yang S, Wang Y, Li Y, E T. Alginate-based adsorbents with adjustable slit-shaped pore structure for selective removal of copper ions. Int J Biol Macromol 2024; 267:131484. [PMID: 38599421 DOI: 10.1016/j.ijbiomac.2024.131484] [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: 02/04/2024] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/12/2024]
Abstract
Adopting effective and efficient techniques for the treatment of heavy metal pollution in water bodies plays an important role in guaranteeing the quality of water and the sustainable development of water resources. In this study, GO, MMT and SA were used as raw materials to compare the adsorption behaviors of three alginate-based adsorbents crosslinked with different valence metal ions (Ca2+, Fe3+ and Zr4+) on Cu(II). The aerogels were based on sodium alginate as the matrix material with unique slit-shaped pore structures formed by stacking effect of sheets and chemical bonding. It was found that the pore structures of the aerogels were denser and more orderly with the increase of the valence states of the crosslinked ions, and the affinity for Cu(II) in planar configuration was stronger. The Zr4+-GMSA aerogel had the maximum adsorption capacity of 126.68 mg/g and the Kd of Cu(II) was up to 50.80 L/g, which exhibited good preferential adsorption performance. The adsorption mechanism of Mn+-GMSA aerogels on Cu(II) was mainly ionic exchange, surface complexation and physical adsorption, which was explored by combining XPS and EDS characterizations of Mn+-GMSA before and after adsorption. This scheme can provide valuable and meaningful contribution to realize the selective recovery of Cu(II).
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Affiliation(s)
- Suya Li
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Jie Hao
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Shuyi Yang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Yuanfei Wang
- Liaoning Huadian Environmental Texting Co., LTD, Jinzhou 121013, Liaoning, China
| | - Yun Li
- Chemistry & Chemical Engineering of College, Yantai University, Yantai 264005, Shandong, China
| | - Tao E
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China..
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3
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Zhang J, E T, Zhou R, Li N, Wang Y, Li Y, Yang S. Transition-state defect structure: A new strategy for TiO 2-based porous materials to enhance photodegradation of pollutants. J Environ Manage 2024; 356:120599. [PMID: 38508013 DOI: 10.1016/j.jenvman.2024.120599] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 02/23/2024] [Accepted: 03/10/2024] [Indexed: 03/22/2024]
Abstract
The aim of this paper is to investigate the derived structure and properties of Zeolitic Imidazolate Framework-8 (ZIF-8), and the effect of residual structural on the catalytic properties after loading with Titanium Dioxide (TiO2). For this purpose, we ingeniously prepare C-ZIF-8@TiO2 with a transition-state defect structure and apply it for efficiently degrading organic dye wastewater represented by Rhodamine B (Rh-B). Thanks to the transition-state defect structure loaded with TiO2 and ZIF-8 self-derived Carbon (C) and Zinc Oxide (ZnO), the catalytic performance of C-ZIF-8@TiO2 is superior to that of TiO2 and normal TiO2/ZIF-8 composites, and it is effective in degrading a variety of antibiotics and dyes. The related characterization also shows good photovoltaic properties and long-term durability for C-ZIF-8@TiO2. The mechanism on free radical action is elucidated and the possible degradation pathway for Rh-B is speculated. Therefore, C-ZIF-8@TiO2 provides a new strategy for the degradation of organic pollutants in water bodies.
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Affiliation(s)
- Jingyang Zhang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Tao E
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China.
| | - Ruifeng Zhou
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Na Li
- Department of Environment Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, 471023, China
| | - Yuanfei Wang
- Liaoning Huadian Environmental Testing Co., LTD, Jinzhou, 121013, Liaoning, China
| | - Yun Li
- Chemistry & Chemical Engineering of College Yantai University, Yantai, 264005, Shandong, China.
| | - Shuyi Yang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
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Ge R, E T, Cheng Y, Wang Y, Yu J, Li Y, Yang S. NaH 2PO 4 synergizes with organic matter to stabilize chromium in tannery sludge. J Environ Manage 2024; 351:119843. [PMID: 38128209 DOI: 10.1016/j.jenvman.2023.119843] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Heavy metal stabilization is an effective method to treat chromium in tannery sludge. Here we show that mainly investigated NaH2PO4 (MSP) and organic matter (OM) to stabilize chromium in tannery sludge. The experimental investigation revealed that the addition of montmorillonite (MMT) and MSP samples showed a significant increase in the percentage of reducible and oxidizable Cr in the former compared to the samples with the addition of MMT. This is attributed to the formation of Cr-O bond, which allows the MSP to undergo an inner-sphere complexation reaction with the metal oxide of Cr via ligand exchange. Significantly, the MSP moiety adsorbs on the surface of OM through monodentate, which increases the adsorption sites of OM for Cr6+ and promotes the reduction of Cr6+ to Cr3+. Moreover, PO43- reacts with Cr3+ to produce CrPO4 precipitation, thus reducing the free Cr3+ content. Finally, DFT calculations confirmed that a ternary system is formed between PO43-, OM, and Cr, and the binding energy is negative, which indicated that PO43- could co-stabilize Cr with OM.
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Affiliation(s)
- Ruijie Ge
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Tao E
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Ying Cheng
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Yuanfei Wang
- Liaoning Huadian Environmental Testing Co., LTD, Jinzhou, 121013, Liaoning, China
| | - Jia Yu
- Environmental Protection Monitoring Station of Haining, Haining, 330481, Zhejiang, China
| | - Yun Li
- Chemistry & Chemical Engineering of College Yantai University, Yantai, 264005, Shandong, China.
| | - Shuyi Yang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China.
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Ma J, E T, Yang S, Chen L, Cheng Y, Yu J, Li Y. Stabilizing Cr(Ⅲ) deriving from tannery sludge with kaolin and organic matter. Environ Res 2023; 236:116798. [PMID: 37527748 DOI: 10.1016/j.envres.2023.116798] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/03/2023]
Abstract
Stabilizing Cr(III) in tannery sludge (TS) via harmless method has always been the goal of environmental pollution treatment. In this study, a simple method to stabilize Cr(III) in TS is proposed via adding kaolin, based on the fact a large amount of organic matter contained in TS. Comprehensive characterizations confirm that kaolin can stabilize Cr(Ⅲ) via its abundant -OH and lamellar structure. Moreover, there are hydrogen bond interactions and ligand exchange-surface complexation between organic matter and kaolin, which is more conducive to form a stable ternary complex with Cr(III), in a state of organic matter-Cr(III)-kaolin. Simultaneously, the BCR sequential extraction experiment shows that the unstable water and acid soluble state of Cr(III) are reduced (from 0.61% to 0.35%), which further indicates that the stabilization of Cr(III) is successful.
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Affiliation(s)
- Junjun Ma
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Tao E
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China.
| | - Shuyi Yang
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Liang Chen
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Ying Cheng
- Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Jia Yu
- Environmental Protection Monitoring Station of Haining, Haining, 330481, Zhejiang, China
| | - Yun Li
- Chemistry & Chemical Engineering of College, Yantai University, Yantai, 264005, Shandong, China.
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Ji C, Yang S, Cheng Y, Liu L, Wang D, Zhu S, E T, Li Y. In situ formed CaSO 4 on waste dander biochar to inhibit the mineralization of soil organic carbon. Sci Total Environ 2023; 854:158776. [PMID: 36116653 DOI: 10.1016/j.scitotenv.2022.158776] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
In order to reduce CO2 emissions, as well as realize the resource utilization of waste dander (WD) and the goal of international "peak carbon dioxide emissions" and "carbon neutrality", Biochar was prepared with WD via pyrolysis technology, achieving CaSO4 in situ generated on its surface, which could be used to inhibit soil organic carbon (SOC) from mineralizing and enhance soil carbon sequestration ability. The characterization results showed that the unstable carbon (C) structures as well as more conjugated structures were generated on Ca-BC, obtaining an increased C sequestration of Ca-BC to 21.70 %. With the application of Ca-BC, the mineralization rate of SOC was reduced to 0.451 mg CO2/(g·d), and the soil moisture content, pH and TOC content were increased to 45.48 %, 7.96 and 47.19 %. In addition, the bioinformatics analysis and redundancy analysis revealed that the application of Ca-BC promoted bacteria to convert into the stable C-dominant phyla (Firmicutes).
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Affiliation(s)
- Cheng Ji
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Shuyi Yang
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Ying Cheng
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Lin Liu
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Daohan Wang
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Shujing Zhu
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Tao E
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, Bohai University, Jinzhou 121013, Liaoning, China.
| | - Yun Li
- Chemistry & Chemical Engineering College of Yantai University, Yantai 264005, Shandong, China.
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Yang S, Cheng Y, Zou H, Tao E. Synergistic roles of montmorillonite and organic matter in reducing bioavailable state of chromium in tannery sludge. Environ Sci Pollut Res Int 2022; 29:87298-87309. [PMID: 35802330 DOI: 10.1007/s11356-022-21897-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Organic matter (OM) has an excellent retention effect on stabilizing chromium (Cr), and functional groups on OM play a predominant role in this process. Based on this result, it is found that a considerable amount of Cr in tannery sludge is immobilized from ion exchangeable species into bound species, benefiting from complexing reaction with functional groups. Especially, the mentioned immobilizing process is enhanced in way of adding with montmorillonite (MMT) which performs adsorption reaction with Cr, as well as plays interaction with functional groups. The result is confirmed by employing density functional theory (DFT) analysis, suggesting the binding ability among Cr, functional groups, and MMT is stronger (- 77.36503 eV) than that of the system of Cr and MMT (- 61.29942 eV), indicating the synergetic roles of OM and MMT. This synergetic role could also be illustrated by a new peak (Cr-OH 20.1%) shown in XPS result. Meanwhile, DFT analysis emphasizes that functional groups on OM give the response for binding with Cr in the order of hydroxyl (-OH) > carboxyl (-COOH) > epoxy (-COC), and all the functional groups tend to donate electron to bind with Cr. In addition, the stabilizing process shows a better fitting effect with pseudo second-order kinetic model (R2 > 0.94), indicating that exchangeable Cr mass transfer and chemical adsorption occur simultaneously.
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Affiliation(s)
- Shuyi Yang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Ying Cheng
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
| | - Hongtao Zou
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China.
| | - E Tao
- Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, College of Chemistry and Material Engineering, Bohai University, Jinzhou, 121013, Liaoning, China
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Xiao X, Tao E, Yang S, Li Y. Metal cations doping enhances selective adsorption of Cr3+ at oxide interfaces. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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9
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Cai D, Tao E, Yang S, Ma Z, Li Y, Liu L, Wang D, Qian J. Effect of mixed-phase TiO2 doped with Ca2+ on charge transfer at the TiO2/graphene interface. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Yang S, Zou H, Cheng Y, Tao E. Immobilizing chromium in tannery sludge via adding collagen protein waste: an in-depth study on mechanism. Environ Sci Pollut Res Int 2022; 29:30337-30347. [PMID: 34997490 DOI: 10.1007/s11356-021-17919-z] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Owing to containing high fraction of organic matter, the tannery sludge seemed to be fit for composting. Actually, it was intensively harmful to the environment, due to containing chromium (Cr). So it might undergo a long time of storage until finding a proper way to dispose it. In the storage period, it would expose the surrounding environment a risk via releasing Cr. In this study, an approach was proposed to minimize the amount of released Cr, and reveal the mechanism on immobilizing Cr. Collagen protein waste (CPW) was adopted to immobilize Cr, and it was evaluated via leaching experiment. The lowest leaching concentration of Cr was 12 mg/L, meeting the limits of related standard in China (GB 5085.3-2007, Tcr < 15 mg/L). Moreover, the compositions and functional groups of the optimum sample (12 mg/L) were also characterized, confirming that the dominant functional groups cross-linking with Cr were hydroxyl (-OH), carboxyl (-COOH), and epoxy (-COC). Importantly, density functional theory (DFT) calculation was also employed, suggesting that Cr was restrained by accepting electrons from O atoms donating by functional groups.
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Affiliation(s)
- Shuyi Yang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou, 121013, China
| | - Hongtao Zou
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Ying Cheng
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou, 121013, China
| | - E Tao
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou, 121013, China
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Hao X, Yang S, E T, Li Y. High efficiency and selective removal of Cu(Ⅱ) via regulating the pore size of graphene oxide/montmorillonite composite aerogel. J Hazard Mater 2022; 424:127680. [PMID: 34799171 DOI: 10.1016/j.jhazmat.2021.127680] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/11/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
In this study, based on the differences in the coordination configurations of various alkaline earth metal ions (Ca(Ⅱ) and Sr(Ⅱ)) and sodium alginate (SA), the aerogel is functionalized with controllable slit-shaped pores structure, contributing by nanosheet stacking impact of graphene oxide (GO) and montmorillonite (MMT), which is able to selectively remove plane hydrate copper ions in complex wastewater systems. Sr-G/M is endowed with denser slit-shaped pores and could achieve more efficient selective removal of Cu(Ⅱ), together with a best removal efficiency of 97.1%, proving by systematic adsorption tests. The selectivity tests show that Sr-G/M exhibits preferential adsorption for Cu(Ⅱ) with a distribution coefficient of 41.85 L g-1. Furthermore, Sr-G/M has excellent regeneration performance to be 86.4% after 8 recycles. Considering its cost-effectiveness, eco-friendliness, easy preparation and efficient selective removal performance, Sr-G/M holds great promise in selective removal of Cu(Ⅱ) from complex wastewater systems.
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Affiliation(s)
- Xin Hao
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Shuyi Yang
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China.
| | - Tao E
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013, Liaoning, China; Institute of Ocean Research, Bohai University, Jinzhou 121013, Liaoning, China.
| | - You Li
- Feixiang Leather Products Co., Ltd, Fuxin 123000, Liaoning, China
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12
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E T, Ma Z, Cai D, Yang S, Li Y. Enhancement of Interfacial Charge Transfer of TiO 2/Graphene with Doped Ca 2+ for Improving Electrical Conductivity. ACS Appl Mater Interfaces 2021; 13:41875-41885. [PMID: 34449194 DOI: 10.1021/acsami.1c07401] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Imparting surface coatings with conductivity is an effective way to prevent fire and explosion caused by electrostatic discharge. TiO2 is a commonly used paint; however, intrinsic TiO2 has poor electrical conductivity. Herein, we develop a method to make TiO2 coating highly conductive by doping Ca2+ into the TiO2 lattice based on the introduction of graphene. It is demonstrated that doping Ca2+ increases the carrier density of TiO2 and its morphology changes from a sphere to a spindle shape, which increases the interfacial contact area between TiO2 and graphene. Therefore, resistivity can be greatly decreased due to the construction of fast charge transport pathways from TiO2 to graphene, resulting from an increase in the speed of interfacial charge transfer. In addition, the electronic properties of the samples are also studied through first-principles calculations before and after Ca2+ doping. The result of the theoretical analysis is in agreement with that of experiments. Thus, the lowest resistivity of Ca2+-TiO2/graphene can reach 0.004 Ω cm. Consequently, the feature of superior conductivity of the Ca2+-TiO2/graphene composite endows it with practical application potential in the field of antistatic coating.
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Affiliation(s)
- Tao E
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou 121013, China
- Institute of Ocean Research, Bohai University, Jinzhou 121013, Liaoning, China
| | - Zengying Ma
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou 121013, China
| | - Ding Cai
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou 121013, China
| | - Shuyi Yang
- Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Center of Experiment Management, Bohai University, Jinzhou 121013, China
| | - Yun Li
- Chemistry & Chemical Engineering of College Yantai University, Yantai 264005, China
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Zhou R, Yang S, Tao E, Xiao X, Liu L, Li Y. Mild-method synthesized GO-TiO2 retains oxygen-containing functional groups as an effective adsorbent. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Cheng Y, Yang S, E T. Magnetic graphene oxide prepared via ammonia coprecipitation method: The effects of preserved functional groups on adsorption property. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108603] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Yang S, Xiao X, E T. Removing low concentration of Cr (III) from wastewater: Using titanium dioxide surface modified montmorillonite as a selective adsorbent. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108464] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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E T, Xiao X, Yang S. A new synthesizing method of TiO2 with montmorillonite: Effective photoelectron transfer to degrade Rhodamine B. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118070] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Moiseev S, Avdeev S, Brovko M, Bulanov N, Tao E, Fomin V. Outcomes of intensive care unit patients with COVID-19: a nationwide analysis in Russia. Anaesthesia 2020; 76 Suppl 3:11-12. [PMID: 33015828 PMCID: PMC7675555 DOI: 10.1111/anae.15265] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2020] [Indexed: 12/26/2022]
Affiliation(s)
- S Moiseev
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - S Avdeev
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - M Brovko
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - N Bulanov
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - E Tao
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - V Fomin
- Sechenov First Moscow State Medical University, Moscow, Russia
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Glybochko P, Fomin V, Avdeev S, Moiseev S, Yavorovskiy A, Brovko M, Umbetova K, Aliev V, Bulanova E, Bondarenko I, Volkova O, Gaynitdinova V, Gneusheva T, Dubrovin K, Kapustina V, Kraeva V, Merzhoeva Z, Nuralieva G, Nogtev P, Panasyuk V, Politov M, Popov A, Popova E, Raspopina N, Royuk V, Sorokin Y, Trushenko N, Khalikova E, Tsareva N, Chikina S, Chichkova N, Akulkina L, Bulanov N, Ermolova L, Zykova A, Kitbalian A, Moiseev A, Potapov P, Tao E, Sholomova V, Shchepalina A, Yakovleva A. Clinical characteristics of 1007 intensive care unitpatients with SARS-CoV-2 pneumonia. ACTA ACUST UNITED AC 2020. [DOI: 10.32756/0869-5490-2020-2-21-29] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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E T, Ma D, Yang S, Sun Y, Xu J, Kim EJ. Zirconium dioxide loaded montmorillonite composites as high-efficient adsorbents for the removal of Cr3+ ions from tanning wastewater. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.07.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lin D, Liang Y, Zheng D, Chen Y, Jing X, Lei M, Zeng Z, Zhou T, Wu X, Peng S, Huang K, Yang L, Xiao S, Liu J, Tao E. Novel biomolecular information in rotenone-induced cellular model of Parkinson's disease. Gene 2018; 647:244-260. [PMID: 29331484 DOI: 10.1016/j.gene.2018.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 12/19/2017] [Accepted: 01/05/2018] [Indexed: 01/12/2023]
Abstract
In order to uncover the remarkable pathogenic genes or molecular pathological process in Parkinson's disease (PD), we employed a microarray analysis upon the cellular PD model induced by rotenone. Compared to the control group, 2174 genes were screened out to be expressed differently in the rotenone-induced group by certain criterion. GO analysis and the pathways analysis showed the significant enrichment of genes that were associated with the biological process of cell cycle, apoptotic process, organelle fusion, mitochondrial lesion, endoplasmic reticulum stress and so on. Among these significant DE genes, some were sorted out to be involved in cell cycle and protein processing in endoplasmic reticulum. As the PPI network analysis showed, the interaction relationship of the DEGs involved in the process of protein generation in endoplasmic reticulum(ER) was clearly showed up. As a prediction, we emphasized the genes EDEM1, ATF4, TRAF2 might play central roles in the protein misfolding process during the progression of Parkinson's disease and these new-found genes might be the future research focus and therapeutic targets in PD.
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Affiliation(s)
- D Lin
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - Y Liang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - D Zheng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - Y Chen
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - X Jing
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - M Lei
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - Z Zeng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - T Zhou
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - X Wu
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - S Peng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - K Huang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - L Yang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - S Xiao
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - J Liu
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China
| | - E Tao
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080,China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan 2nd Road, Guangzhou 510080, China.
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Peng S, Liang Y, Jing X, Chen Y, Lin D, Bu C, Zheng D, Huang K, Lei M, Xiao S, Yang L, Liu J, Huang S, Tao E. The MRI-based brain structure measurements in Parkinson’s disease and Parkinson-plus syndromes. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.320] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lin D, Liang Y, Jing X, Chen Y, Lei M, Zeng Z, Zhou T, Wu X, Peng S, Zheng D, Huang K, Yang L, Xiao S, Liu J, Tao E. Microarray analysis of an synthetic α-synuclein induced cellular model reveals the expression profile of long non-coding RNA in Parkinson's disease. Brain Res 2017; 1678:384-396. [PMID: 29137975 DOI: 10.1016/j.brainres.2017.11.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 08/07/2017] [Revised: 11/07/2017] [Accepted: 11/08/2017] [Indexed: 01/10/2023]
Abstract
Long non-coding RNAs (lncRNAs) are a new research focus that are reported to influence the pathogenetic process of neurodegenerative disorders. To uncover new disease-associated genes and their relevant mechanisms, we carried out a gene microarray analysis based on a Parkinson's disease (PD) in vitro model induced by α-synuclein oligomers. This cellular model induced by 25 μmol/L α-synuclein oligomers has been confirmed to show the stable, transmissible neurotoxicity of α-synuclein, a typical PD pathological marker. And several differentially expressed lncRNAs and mRNAs were identified in this model, such as G046036, G030771, AC009365.4, RPS14P3, CTB-11I22.1, and G007549. Subsequent ceRNA analysis determined the potential relationships between these lncRNAs and their associated mRNAs and microRNAs. The results of the present study widen our horizon of PD susceptibility genes and provide new pathways towards efficient diagnostic biomarkers and therapeutic targets for PD.
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Affiliation(s)
- D Lin
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Y Liang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - X Jing
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Y Chen
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - M Lei
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Z Zeng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - T Zhou
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - X Wu
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - S Peng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - D Zheng
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - K Huang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - L Yang
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - S Xiao
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - J Liu
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - E Tao
- Department of Neurology, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan 2nd Road, Guangzhou 510080, China.
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Lin D, Jing X, Chen Y, Liang Y, Lei M, Peng S, Zhou T, Zheng D, Zeng Z, Wu X, Yang L, Xiao S, Liu J, Tao E. Rifampicin pre-treatment inhibits the toxicity of rotenone-induced PC12 cells by enhancing sumoylation modification of α-synuclein. Biochem Biophys Res Commun 2017; 485:23-29. [PMID: 28132806 DOI: 10.1016/j.bbrc.2017.01.100] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 01/19/2017] [Indexed: 11/26/2022]
Abstract
Our previous research revealed that rifampicin could protect PC12 (pheochromocytoma 12) cells from rotenone-induced cytotoxicity by reversing the aggregation of α-synuclein. Furthermore, increasing evidence indicated that the misfolded α-synuclein with SUMOylation, an important protein posttranslational modification, was easier to solubilize and was less toxic. Here, we investigated whether rifampicin could stabilize α-synuclein and prevent rotenone-induced PC12 cells from undergoing apoptosis by enhancing SUMOylation of α-synuclein. The expression of SUMO1 and SUMO2/3, the two main proteins responsible for the SUMOylation modification in PC12 cells, were detected by western blotting. Co-immunoprecipitation was performed to compare qualitatively the SUMOylation modification of α-synuclein. The cell viability and apoptosis rate were measured by a CCK-8 assay kit and flow cytometry, respectively. We targeted Ubc9 as a key enzyme in the SUMOylation modification pathway and knocked down the UBC9 gene using a short interfering RNA. Treatment with 150 μmol/L rifampicin, increased the expressions of SUMO1 and SUMO2/3 in cells by 1.5 times compared with the control group; meanwhile, the cell viability of rotenone-induced cells increased from 20 to 80% (P < 0.05). In addition, the increased SUMOylation activity in the cells stimulated by rifampicin was observed 18 h earlier compared with cells treated by rotenone alone. SUMOylation of α-synuclein was more significant in rifampicin-treated cells and Ubc9 upregulated cells. However, the same phenomenon and the protective effect of rifampicin were reversed after UBC9 knockout. In conclusion, rifampicin might reduce the cytotoxicity of rotenone-induced PC12 cells by promoting SUMOylation of α-synuclein.
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Affiliation(s)
- D Lin
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - X Jing
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Y Chen
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Y Liang
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - M Lei
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - S Peng
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - T Zhou
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - D Zheng
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - Z Zeng
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - X Wu
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - L Yang
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - S Xiao
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - J Liu
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China
| | - E Tao
- Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan 2nd Road, Guangzhou 510080, China.
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Zhou H, Liu Z, Liu J, Wang J, Zhou D, Zhao Z, Xiao S, Tao E, Suo WZ. Fractionated radiation-induced acute encephalopathy in a young rat model: cognitive dysfunction and histologic findings. AJNR Am J Neuroradiol 2011; 32:1795-800. [PMID: 21920857 DOI: 10.3174/ajnr.a2643] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Radiation-induced cognitive dysfunction is a common and serious complication after radiation therapy of brain tumor, yet knowledge of its mechanism is poorly understood. The aim of this study was to establish a young rat model for acute radiation encephalopathy, at both cognitive and pathologic levels, induced by fractionated irradiation. MATERIALS AND METHODS Four-week-old male rats were randomized into sham (0 Gy) and 2 experimental groups receiving fractionated irradiation of 5 Gy/day, 5 days/week, with total doses of 20 and 40 Gy, respectively. Cognition, BBB integrity, and potential astrogliosis were evaluated at 0, 4, 8, and 12 weeks' postirradiation. RESULTS Twenty-Gy irradiation led to transient cognitive impairment only at 4 weeks' postirradiation. Forty-Gy irradiation induced cognitive impairment at both 4 and 8 weeks' postirradiation, which was more severe than that induced by 20 Gy. Cognitive impairment was accompanied by a transient increase in BWC only at 4 weeks for the 40-Gy group. Disrupted BBB permeability was detected at 4 and 8 weeks' postirradiation for the 20-Gy group, and at 4, 8, and 12 weeks' postirradiation for 40-Gy group, respectively. Increased astrogliosis in the hippocampus could be detected at 4 weeks' postirradiation for 40-Gy group. CONCLUSIONS Fractionated irradiation in this experiment could induce acute brain injury, leading to cognitive impairment in young rats. BBB disruption might be a sensitive index for acute radiation encephalopathy. In addition, reactive astrogliosis might play an important role in this process. The present model, especially the 40-Gy irradiation group, is useful for basic and therapeutic studies of acute radiation encephalopathy.
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Affiliation(s)
- H Zhou
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Shao M, Liu Z, Tao E, Chen B. [Polymorphism of MAO-B gene and NAD(P)H: quinone oxidoreductase gene in Parkinson's disease]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2001; 18:122-4. [PMID: 11295131] [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: 02/19/2023]
Abstract
OBJECTIVE To investigate whether Parkinson's disease(PD) is associated with genetic polymorphism of intron 13 of monoamine oxidase B(MAO-B) and NAD(P)H: quinone oxidoreductase(NQO1) gene cDNA 609C to T. METHODS Association study was performed in 126 PD patients and 136 healthy control subjects matched for age, sex and origin. The NQO1 gene polymorphism was analyzed with the polymerase chain reaction-restriction fragment length polymorphism, the polymorphism of intron 13 of MAO-B was analyzed by allele- specific PCR. RESULTS The allelic frequency of the mutant T allele of NQO1 gene was significantly higher in the PD patients as compared to the controls(P<0.05). The relative risk of suffering from PD increased (OR=3.8) in the individuals with T allelic genotype of NQO1 gene, and the odds ratio was as high as 5.7 when the individuals with A or AA genotype of MAO-B gene coexisted with the T allele genotype of NQO1 gene. CONCLUSION The cDNA 609T allele of NQO1 gene might be a risk factor of PD, which could be associated with the genetic susceptibility of PD. The high activity A or AA genotype of MAO-B and the low activity genotype of NQO1 gene might have synergistic effect. When both genotypes coexist, the risk of suffering PD will be increased greatly.
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Affiliation(s)
- M Shao
- Department of Neurology, Zhujiang Hospital of the First Military Medical University, Guangzhou, Guangdong 510282 P. R. China.
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Tao E, Liu Z, Chen B, Pan X, Shao M. [Association between the debrisoquine hydroxylase gene polymorphism and the genetic susceptibility of Parkinson's disease]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 1998; 15:281-3. [PMID: 9758873] [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: 02/08/2023]
Abstract
OBJECTIVE To clarify the relation of the debrisoquine hydroxylase gene polymorphism with the genetic susceptibility of Parkinson's disease. METHODS The debrisoquine hydroxylase gene polymorphisms were analyzed with the polymerase chain reaction-restriction fragment length polymorphism methods in 100 cases of Parkinson's disease and 100 age-,sex-matched normal controls. RESULTS It was found that the frequencies of A and B mutation of debrisoquine hydroxylase gene in group of patients were higher than those in the controls, and the risk of suffering Parkinson's disease increased 2 times. In group of the patients, the frequencies of C188-->T, G4268-->C and C2938-->T were also higher than those in the controls. Especially in those with C2938-->T mutation, the risk of suffering the disease increased 2.58 times. CONCLUSION The result suggested that the defect of the detoxifying enzymes might be a factor contributing to the genetic susceptibility of Parkinson's disease.
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Affiliation(s)
- E Tao
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University of Medical Sciences, Guangzhou, Guangdong, 510120 P. R. China
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Tao E, Liu Z, Chen B, Pan X. [Cytochrome P450*2D6 gene polymorphism in Chinese population]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 1998; 15:34-7. [PMID: 9456373] [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: 02/06/2023]
Abstract
OBJECTIVE To demonstrate the cytochrome P450*2D6(CYP*2D6) gene polymorphism distribution in Chinese. METHODS The polymorphisms of CYP*2D6 gene in 100 Chinese people were studied with polymerase chain reaction and Xba I restriction fragment length polymorphic (RFLP) techniques. RESULTS The frequencies of CYP*2D6 gene A, B, D and E mutations were 1%, 6.5%, 0.5% and 1%, respectively; the genotypes of 29kb/29kb,44kb/29kb and 44kb/44kb Xba I RFLP were 38%, 46% and 13%, respectively. It was found that 12% of B mutations were linked with even though A and B mutations were mainly associated with 29kb/29kb genotype. CONCLUSION The frequencies of the four kinds of CYP*2D6 gene mutation in Chinese were lower than those of the European, but the frequency of Xba I 44kb allele was a little higher.
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Affiliation(s)
- E Tao
- Department of Neurology, Sun Yat-sen University of Medical Sciences, Guangzhou, 510080 P. R. China
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