1
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Yan W, Wang L, Jing C. Phosphate ligand-mediated production of reactive oxygen species during oxygenation of Fe(II)-phosphate complexes. JOURNAL OF HAZARDOUS MATERIALS 2024; 479:135720. [PMID: 39236544 DOI: 10.1016/j.jhazmat.2024.135720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/26/2024] [Accepted: 08/31/2024] [Indexed: 09/07/2024]
Abstract
Reactive oxygen species (ROS) production upon the oxygenation of reduced iron minerals is of critical importance to redox cycles of Fe and the fate of refractory organic contaminants. The environmental impact factors during this process, however, have been underappreciated. In this study, prominently enhanced production of hydroxyl radicals (•OH) was observed by oxygenation of Fe(II) with 5-50 mM phosphate. The results of spin trap electron spin resonance (ESR) experiment showed that Fe(II)-phosphate complexes facilitated the generation of •OH. The degradation experiment of p-nitrophenol (PNP) confirmed that •OH formation was dominated by a consecutive one-electron O2 reduction (90.2-96.9 %), and the quantification of PNP degradation products revealed that Fe(II)/phosphate molar ratios regulated the O2 activation pathways for O2•- or •OH production. The further experimental and theoretical investigation demonstrated that the coordination of phosphate with Fe(II) plays a dual role in ROS generation that facilitated O2•- formation by lowering the energy barrier for Fe(II) oxidation and altered the reaction pathway of •OH formation due to its occupation of sites for electron transfer. The present work highlights an important role of natural oxyanions in O2 activation by Fe(II) and raises the possibility of in situ degradation of contaminants in subsurface environment.
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Affiliation(s)
- Wei Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Liying Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Chao S, Valsecchi C, Sun J, Shao H, Li X, Tang C, Fan M. Highly Sensitive Surface-Enhanced Raman Scattering Detection of Hydroxyl Radicals in Water Microdroplets Using Phthalhydrazide/Ag Nanoparticles Nanosensor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:16497-16506. [PMID: 39114886 DOI: 10.1021/acs.est.4c03081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
The spontaneous generation of hydrogen peroxide (H2O2) within atmospheric microdroplets, such as raindrops and aerosols, plays a crucial role in various environmental processes including pollutant degradation and oxidative stress. However, quantifying hydroxyl radicals (•OH), essential for H2O2 formation, remains challenging due to their short lifespan and low concentration. This study addresses this gap by presenting a highly sensitive and selective surface-enhanced Raman scattering (SERS) nanosensor specifically designed for quantifying •OH within water microdroplets. Utilizing a phthalhydrazide (Phth) probe, the SERS technique enables rapid, interference-free detection of •OH at nanomolar concentrations. It achieves a linear detection range from 2 nM to 2 μM and a limit of detection as low as 0.34 nM. Importantly, the SERS sensor demonstrates robustness and accuracy within water microdroplets, paving the way for comprehensive mechanistic studies of H2O2 generation in the atmosphere. This innovative approach not only offers a powerful tool for environmental research but also holds potential for advancing our understanding of atmospheric H2O2 formation and its impact on air quality and pollutant degradation.
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Affiliation(s)
- Shengmao Chao
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Chiara Valsecchi
- Federal University of Pampa, Campus Alegrete, 97542-160 Alegrete, Rio Grande do Sul, Brazil
| | - Ji Sun
- Department of Student Affairs, Henan University of Technology, 450001 Zhengzhou, China
| | - Hong Shao
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Xinxia Li
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Changyu Tang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Meikun Fan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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3
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Xia D, Zhang H, Ju Y, Xie HB, Su L, Ma F, Jiang J, Chen J, Francisco JS. Spontaneous Degradation of the "Forever Chemicals" Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs) on Water Droplet Surfaces. J Am Chem Soc 2024. [PMID: 38584396 DOI: 10.1021/jacs.4c00435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Because of their innate chemical stability, the ubiquitous perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been dubbed "forever chemicals" and have attracted considerable attention. However, their stability under environmental conditions has not been widely verified. Herein, perfluorooctanoic acid (PFOA), a widely used and detected PFAS, was found to be spontaneously degraded in aqueous microdroplets under room temperature and atmospheric pressure conditions. This unexpected fast degradation occurred via a unique multicycle redox reaction of PFOA with interfacial reactive species on the droplet surface. Similar degradation was observed for other PFASs. This study extends the current understanding of the environmental fate and chemistry of PFASs and provides insight into aid in the development of effective methods for removing PFASs.
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Affiliation(s)
- Deming Xia
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
- Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6316, United States
| | - Hong Zhang
- School of Marin Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
| | - Yun Ju
- School of Marin Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
| | - Hong-Bin Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Lihao Su
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Fangfang Ma
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jie Jiang
- School of Marin Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Joseph S Francisco
- Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6316, United States
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4
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Yang R, Wang Z, Guo J, Qi J, Liu S, Zhu H, Li B, Liu Z. Catalytic degradation of antibiotic sludge to produce formic acid by acidified red mud. ENVIRONMENTAL RESEARCH 2024; 245:117970. [PMID: 38142728 DOI: 10.1016/j.envres.2023.117970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/24/2023] [Accepted: 12/09/2023] [Indexed: 12/26/2023]
Abstract
As complex and difficult-to-degrade persistent organic pollutants (POPs), antibiotics have caous damage to the ecological enused serivironment. Because of the difficult degradation of antibiotics, sewage and sludge discharged by hospitals and pharmaceutical enterprises often contain a large number of antibiotic residues. Therefore, the harmless and resourceful treatment of antibiotic sludge is very meaningful. In this paper, amoxicillin was selected as a model compound for antibiotic sludge. Acidified red mud (ARM) was used to degrade antibiotic sludge and produce hydrogen energy carrier formic acid in catalytic wet peroxidation system (CWPO). Based on various characterization analyses, the reaction catalytic mechanism was demonstrated to be the result of the non-homogeneous Fanton reaction interaction between Fe3O4 on the ARM surface and H2O2 in solution. Formic acid is the product of the decarboxylation reaction of amoxicillin and its degradation of various organic acids. The formic acid was produced up to 792.38 mg L-1, under the optimal conditions of reaction temperature of 90 °C, reaction time of 30 min, H2O2 concentration of 20 mL L-1, ARM addition of 0.8 g L-1, pH = 7, and rotor speed of 500 rpm. This research aims to provide some references for promoting red mud utilization in antibiotic sludge degradation.
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Affiliation(s)
- Ruihao Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Zixuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Junjiang Guo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Jiamin Qi
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Shuai Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Hengxi Zhu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Bin Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China; National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, Yunnan, China.
| | - Zewei Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.
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5
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Chae S, Kim MS, Kim JH, Fortner JD. Nanobubble Reactivity: Evaluating Hydroxyl Radical Generation (or Lack Thereof) under Ambient Conditions. ACS ES&T ENGINEERING 2023; 3:1504-1510. [PMID: 37854075 PMCID: PMC10581208 DOI: 10.1021/acsestengg.3c00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 10/20/2023]
Abstract
Nanobubble (NB) generation of reactive oxygen species (ROS), especially hydroxyl radical (·OH), has been controversial. In this work, we extensively characterize NBs in solution, with a focus on ROS generation (as ·OH), through a number of methods including degradation of ·OH-specific target compounds, electron paramagnetic resonance (EPR), and a fluorescence-based indicator. Generated NBs exhibit consistent physical characteristics (size, surface potential, and concentration) when compared with previous studies. For conditions described, which are considered as high O2 NB concentrations, no degradation of benzoic acid (BA), a well-studied ·OH scavenger, was observed in the presence of NBs (over 24 h) and no EPR signal for ·OH was detected. While a positive fluorescence response was measured when using a fluorescence probe for ·OH, aminophenyl fluorescein (APF), we provide an alternate explanation for the result. Gas/liquid interfacial characterization indicates that the surface of a NB is proton-rich and capable of inducing acid-catalyzed hydrolysis of APF, which results in a false (positive) fluorescence response. Given these negative results, we conclude that NB-induced ·OH generation is minimal, if at all, for conditions evaluated.
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Affiliation(s)
- Seung
Hee Chae
- Department
of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave., New Haven, Connecticut 06520, United States
| | - Min Sik Kim
- Department
of Environmental Engineering and Soil Environment Research Center, Jeonbuk National University, Jeonju, Jeollabukdo 54896, Republic of Korea
| | - Jae-Hong Kim
- Department
of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave., New Haven, Connecticut 06520, United States
| | - John D. Fortner
- Department
of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave., New Haven, Connecticut 06520, United States
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6
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Reactive oxygen species, the trident of Neptune in the hands of hecate; role in different diseases, signaling pathways, and detection methods. Arch Biochem Biophys 2022; 728:109357. [DOI: 10.1016/j.abb.2022.109357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/29/2022] [Accepted: 07/16/2022] [Indexed: 12/22/2022]
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7
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Photocatalytic Selective Degradation of Catechol and Resorcinol on the TiO2 with Exposed {001} Facets: Roles of Two Types of Hydroxyl Radicals. Catalysts 2022. [DOI: 10.3390/catal12040378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Photocatalytic studies on contaminant degradation in water suspension generally suggest that the degradation reaction mainly takes place on the surface of the photocatalysts rather than in the water phase. The mechanism of selective degradation is often difficult to distinguish concerning the contribution of adsorption and radical selectivity. This study is thus designed to investigate the roles of two types of hydroxyl radicals, adsorbed hydroxyl radical (·OHa) and free hydroxyl radical (·OHf), on the selective degradation of catechol (CT) and resorcinol (RE). CT and RE are significantly different in adsorption on a TiO2 photocatalyst with a highly exposed {001} facet. CT can be selectively degraded by TiO2 and was highly correlated with adsorption. Free radical quenching experiment results showed that the degradation of CT can be identified as the combined effect of both ·OHa and ·OHf, while the degradation of RE was mainly due to the ·OHf. Electron paramagnetic resonance coupled with spin trapping agents was used to detect the relative concentration of hydroxyl radicals in all the photocatalytic degradation processes. After a series analysis, we proposed that the mechanism of selective degradation mainly depends on the concentration of ·OHf for the pollutant molecules with weak adsorption on the catalyst surface.
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Martin CR, Park KC, Leith GA, Yu J, Mathur A, Wilson GR, Gange GB, Barth EL, Ly RT, Manley OM, Forrester KL, Karakalos SG, Smith MD, Makris TM, Vannucci AK, Peryshkov DV, Shustova NB. Stimuli-Modulated Metal Oxidation States in Photochromic MOFs. J Am Chem Soc 2022; 144:4457-4468. [PMID: 35138840 DOI: 10.1021/jacs.1c11984] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tuning metal oxidation states in metal-organic framework (MOF) nodes by switching between two discrete linker photoisomers via an external stimulus was probed for the first time. On the examples of three novel photochromic copper-based frameworks, we demonstrated the capability of switching between +2 and +1 oxidation states, on demand. In addition to crystallographic methods used for material characterization, the role of the photochromic moieties for tuning the oxidation state was probed via conductivity measurements, cyclic voltammetry, and electron paramagnetic resonance, X-ray photoelectron, and diffuse reflectance spectroscopies. We confirmed the reversible photoswitching activity including photoisomerization rate determination of spiropyran- and diarylethene-containing linkers in extended frameworks, resulting in changes in metal oxidation states as a function of alternating excitation wavelengths. To elucidate the switching process between two states, the photoisomerization quantum yield of photochromic MOFs was determined for the first time. Overall, the introduced noninvasive concept of metal oxidation state modulation on the examples of stimuli-responsive MOFs foreshadows a new pathway for alternation of material properties toward targeted applications.
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Affiliation(s)
- Corey R Martin
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gabrielle A Leith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Jierui Yu
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Abhijai Mathur
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gina R Wilson
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gayathri B Gange
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Emily L Barth
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Richard T Ly
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Olivia M Manley
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Kelly L Forrester
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Stavros G Karakalos
- College of Engineering and Computing, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Thomas M Makris
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Aaron K Vannucci
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Dmitry V Peryshkov
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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In-Situ H 2O 2 Cleaning for Fouling Control of Manganese-Doped Ceramic Membrane through Confined Catalytic Oxidation Inside Membrane. MEMBRANES 2021; 12:membranes12010021. [PMID: 35054547 PMCID: PMC8777854 DOI: 10.3390/membranes12010021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/21/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022]
Abstract
This work presents an effective approach for manganese-doped Al2O3 ceramic membrane (Mn-doped membrane) fouling control by in-situ confined H2O2 cleaning in wastewater treatment. An Mn-doped membrane with 0.7 atomic percent Mn doping in the membrane layer was used in a membrane bioreactor with the aim to improve the catalytic activity toward oxidation of foulants by H2O2. Backwashing with 1 mM H2O2 solution at a flux of 120 L/m2/h (LMH) for 1 min was determined to be the optimal mode for in-situ H2O2 cleaning, with confined H2O2 decomposition inside the membrane. The Mn-doped membrane with in-situ H2O2 cleaning demonstrated much better fouling mitigation efficiency than a pristine Al2O3 ceramic membrane (pristine membrane). With in-situ H2O2 cleaning, the transmembrane pressure increase (ΔTMP) of the Mn-doped membrane was 22.2 kPa after 24-h filtration, which was 40.5% lower than that of the pristine membrane (37.3 kPa). The enhanced fouling mitigation was attributed to Mn doping, in the Mn-doped membrane layer, that improved the membrane surface properties and confined the catalytic oxidation of foulants by H2O2 inside the membrane. Mn3+/Mn4+ redox couples in the Mn-doped membrane catalyzed H2O2 decomposition continuously to generate reactive oxygen species (ROS) (i.e., HO• and O21), which were likely to be confined in membrane pores and efficiently degraded organic foulants.
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10
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Guo SL, Lai SN, Wu JM. Strain-Induced Ferroelectric Heterostructure Catalysts of Hydrogen Production through Piezophototronic and Piezoelectrocatalytic System. ACS NANO 2021; 15:16106-16117. [PMID: 34543011 DOI: 10.1021/acsnano.1c04774] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this work, we discover a piezoelectrocatalytic system composed of a ferroelectric heterostructure of BaTiO3 (BTO)@MoSe2 nanosheets, which exhibit piezoelectric potential (piezopotential) coupling with electrocatalyzed effects by a strain-induced piezopotential to provide an internal bias to the catalysts' surface; subsequently, the catalytic properties are substantially altered to enable the formation of activity states. The H2 production rate of BTO@MoSe2 for the piezoelectrocatalytic H2 generation is 4533 μmol h-1 g-1, which is 206% that of TiO2@MoSe2 for piezophototronic (referred to as piezophotocatalytic process) H2 generation (∼2195.6 μmol h-1 g-1). BTO@MoSe2 presents a long-term H2 production rate of 21.2 mmol g-1 within 8 h, which is the highest recorded value under piezocatalytic conditions. The theoretical and experimental results indicate that the ferroelectric BTO acts as a strain-induced electric field generator while the few-layered MoSe2 is facilitating piezocatalytic redox reactions on its active sites. This is a promising method for environmental remediation and clean energy development.
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Affiliation(s)
- Syuan-Lin Guo
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Section 2 Kuang Fu Road, Hsinchu 300, Taiwan
| | - Sz-Nian Lai
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Section 2 Kuang Fu Road, Hsinchu 300, Taiwan
| | - Jyh Ming Wu
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Section 2 Kuang Fu Road, Hsinchu 300, Taiwan
- High Entropy Materials Center, National Tsing Hua University, 101, Section 2 Kuang Fu Road, Hsinchu 300, Taiwan
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11
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Li L, Deng Y, Ai J, Li L, Liao G, Xu S, Wang D, Zhang W. Fe/Mn loaded sludge-based carbon materials catalyzed oxidation for antibiotic degradation: Persulfate vs H2O2 as oxidant. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118409] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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12
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Hua J, Huang M. Heterogeneous Fenton-like degradation of EDTA in an aqueous solution with enhanced COD removal under neutral pH. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:2432-2440. [PMID: 32784286 DOI: 10.2166/wst.2020.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
By providing the key carbon and nitrogen elements needed for eutrophication, the potential toxicity of ethylenediaminetetraacetic acid (EDTA) prompts the exploration of effective treatment methods to minimize the amount of EDTA released into the environment. In this study, Fe3O4 magnetic nanoparticles (MNPs) were prepared and used as catalysts to study the mineralization of EDTA in Fenton-like reactions under neutral pH. Fe3O4 MNPs were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET). The effects of pH, ferric ion leaching, and H2O2 concentration on chemical oxygen demand (COD) removal of EDTA were investigated. The morphological characterization of the nanoparticles suggests a quasi-spherical structure with small particle size and a surface area of 49.9 m2/g. The results show that Fe3O4 MNPs had good catalytic activity for the mineralization of EDTA under pH 5.0-9.0. The optimum conditions for the COD removal of 45% at pH 7.0 were: 40 mM H2O2, 10 mM Fe3O4, and 1 g/L EDTANa2·2H2O at 303 K. Fe3O4 MNPs maintained high catalytic activity after five cycles of continuous degradation of EDTA. According to reactive oxidizing species measurements obtained by electron spin resonance (ESR), it was confirmed that HO· free radicals, presented in the H2O2/Fe3O4 MNPs heterogeneous Fenton-like reaction, were the primary active group in the removal of EDTA. These features can be considered beneficial to the application of Fe3O4 MNPs towards industrial wastewater treatment.
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Affiliation(s)
- Junfeng Hua
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail:
| | - Mei Huang
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail: ; Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
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13
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Bao T, Damtie MM, Hosseinzadeh A, Wei W, Jin J, Phong Vo HN, Ye JS, Liu Y, Wang XF, Yu ZM, Chen ZJ, Wu K, Frost RL, Ni BJ. Bentonite-supported nano zero-valent iron composite as a green catalyst for bisphenol A degradation: Preparation, performance, and mechanism of action. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 260:110105. [PMID: 31941635 DOI: 10.1016/j.jenvman.2020.110105] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/02/2020] [Accepted: 01/06/2020] [Indexed: 05/28/2023]
Abstract
Bisphenol A (BPA) is a toxic environmental pollutant commonly found in wastewater. Using non-toxic materials and eco-friendly technology to remove this pollutant from wastewater presents multiple advantages. Treatment of wastewater with clay minerals has received growing interest because of the environment friendliness of these materials. Bentonite is a 2:1 layered phyllosilicate clay mineral that can support nano-metal catalysts. It can prevent the agglomeration of nano-metal catalysts and improve their activity. In this article, a green catalytic nano zero-valent iron/bentonite composite material (NZVI@bentonite) was synthesized via liquid-phase reduction. The average size of NZVI was approximately 40-50 nm. Good dispersion and low aggregation were observed when NZVI was loaded on the surface or embedded into the nanosheets of bentonite. Degradation of BPA, a harmful contaminant widely found in wastewater at relatively high levels, by NZVI@bentonite was then investigated and compared with that by pristine NZVI through batch Fenton-like reaction experiments. Compared with pristine NZVI and bentonite alone, the NZVI@bentonite showed a higher BPA degradation ratio and offered highly effective BPA degradation up to 450 mg/g in wastewater under optimum operating conditions. Adsorption coupled with the Fenton-like reaction was responsible for BPA degradation by NZVI@bentonite. This work extends the application of NZVI@bentonite as an effective green catalyst for BPA degradation in aqueous environments.
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Affiliation(s)
- Teng Bao
- School of Biology, Food and Environment Engineering, Hefei University, China; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia; Institute of Environment Engineering, Hefei University, China; Anhui Key Laboratory of Sewage Purification and Eco-restoration Materials, Hefei, China; School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Queensland, 4001, Australia
| | - Mekdimu Mezemir Damtie
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia; Department of Civil and Environmental Engineering, KICT School, University of Science & Technology (UST), 34113, 217, Gajeong-ro, Yuseong-gu, Daejeon, South Korea
| | - Ahmad Hosseinzadeh
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Jie Jin
- School of Biology, Food and Environment Engineering, Hefei University, China; Institute of Environment Engineering, Hefei University, China; Anhui Key Laboratory of Sewage Purification and Eco-restoration Materials, Hefei, China.
| | - Hoang Nhat Phong Vo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Jing Song Ye
- School of Biology, Food and Environment Engineering, Hefei University, China
| | - Yiwen Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Xiao Fei Wang
- School of Biology, Food and Environment Engineering, Hefei University, China
| | - Zhi Min Yu
- School of Biology, Food and Environment Engineering, Hefei University, China; Institute of Environment Engineering, Hefei University, China; Anhui Key Laboratory of Sewage Purification and Eco-restoration Materials, Hefei, China
| | - Zhi Jie Chen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Ke Wu
- School of Biology, Food and Environment Engineering, Hefei University, China; Institute of Environment Engineering, Hefei University, China; Anhui Key Laboratory of Sewage Purification and Eco-restoration Materials, Hefei, China
| | - Ray L Frost
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Queensland, 4001, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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14
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Tan H, Zhao Y, Xu X, Sun Y, Li Y, Du J. A covalent triazine framework as an oxidase mimetic in the luminol chemiluminescence system: application to the determination of the antioxidant rutin. Mikrochim Acta 2019; 187:42. [PMID: 31832861 DOI: 10.1007/s00604-019-4058-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 11/30/2019] [Indexed: 01/30/2023]
Abstract
It is found that a covalent triazine framework (CTF-1) (that was prepared from 1,4-dicyanobenzene) exhibits oxidase-like activity toward the oxidation of luminol with dissolved oxygen in alkaline condition to produce intense blue chemiluminescence (CL). The reaction follows Michaelis-Menten kinetics and shows strong specificity for luminol. Reactive oxygen species including 1O2, •OH and O2•- are testified to be involved in the reaction and responsible for the CL. The reaction was applied to the determination of the radical-scavenging activity of antioxidants, with rutin, kaempferol and ferulic acid serving as model scavengers. A sensitive CL method was developed for the determination of rutin based on its inhibitory effect on the reaction. The CL system gave a linear response to the concentration of rutin in the range of 0.03-0.25 μmol·L-1 with a limit of detection of 0.015 μmol·L-1. The practicability of the method was demonstrated by successful determination of rutin in tablets and in Flos Sophorae Immaturus. Graphical Abstract.
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Affiliation(s)
- Haonan Tan
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yaxin Zhao
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xiaotong Xu
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yuan Sun
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yinhuan Li
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Jianxiu Du
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.
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15
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Yan P, Shen J, Yuan L, Kang J, Wang B, Zhao S, Chen Z. Catalytic ozonation by Si-doped α-Fe2O3 for the removal of nitrobenzene in aqueous solution. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115766] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Particulate Matter 2.5 Mediates Cutaneous Cellular Injury by Inducing Mitochondria-Associated Endoplasmic Reticulum Stress: Protective Effects of Ginsenoside Rb1. Antioxidants (Basel) 2019; 8:antiox8090383. [PMID: 31505827 PMCID: PMC6769862 DOI: 10.3390/antiox8090383] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/25/2019] [Accepted: 09/08/2019] [Indexed: 12/14/2022] Open
Abstract
The prevalence of fine particulate matter-induced harm to the human body is increasing daily. The aim of this study was to elucidate the mechanism by which particulate matter 2.5 (PM2.5) induces damage in human HaCaT keratinocytes and normal human dermal fibroblasts, and to evaluate the preventive capacity of the ginsenoside Rb1. PM2.5 induced oxidative stress by increasing the production of reactive oxygen species, leading to DNA damage, lipid peroxidation, and protein carbonylation; this effect was inhibited by ginsenoside Rb1. Through gene silencing of endoplasmic reticulum (ER) stress-related genes such as PERK, IRE1, ATF, and CHOP, and through the use of the ER stress inhibitor tauroursodeoxycholic acid (TUDCA), it was demonstrated that PM2.5-induced ER stress also causes apoptosis and ultimately leads to cell death; however, this phenomenon was reversed by ginsenoside Rb1. We also found that TUDCA partially restored the production of ATP that was inhibited by PM2.5, and its recovery ability was significantly higher than that of ginsenoside Rb1, indicating that the process of ER stress leading to cell damage may also occur via the mitochondrial pathway. We concluded that ER stress acts alone or via the mitochondrial pathway in the induction of cell damage by PM2.5, and that ginsenoside Rb1 blocks this process. Ginsenoside Rb1 shows potential for use in skin care products to protect the skin against damage by fine particles.
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17
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Nobushi Y, Asamoto H, Uchikura K. [A Method Based on Ru(bpy) 3 3+ Electrogenerated Chemiluminescence for Assessment of Antioxidant Property of Naturally Occurring Antioxidants]. YAKUGAKU ZASSHI 2019; 139:309-315. [PMID: 30713243 DOI: 10.1248/yakushi.18-00082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We developed a flow injection analysis (FIA) method based on tris(2,2'-bipyridine)ruthenium(III) [Ru(bpy)3 3+] electrogenerated chemiluminescence for assessment of antioxidant property. The hydroxyl radical (∙OH) were generated by H2O photolysis using an ultraviolet/H2O photoreactor. The reactor comprised a polytetrafluoroethylene tube, a quartz container, and a low-pressure mercury lamp that predominantly emitted radiation at around 185 nm. When the hydroxyl radical and Ru(bpy)3 3+ were in contact, chemiluminescence was generated as background emission. The background emission decreased when antioxidant samples were injected to the system. The antioxidant property of the naturally occurring antioxidants tested are listed herein, starting with the highest: gallic acid>ascorbic acid>quercetin. Moreover, our method allowed a sample throughput of approximately 100 samples/h. The proposed high throughput method can be used to assess the antioxidant property of the naturally occurring antioxidants.
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18
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Du J, Guo W, Wang H, Yin R, Zheng H, Feng X, Che D, Ren N. Hydroxyl radical dominated degradation of aquatic sulfamethoxazole by Fe 0/bisulfite/O 2: Kinetics, mechanisms, and pathways. WATER RESEARCH 2018; 138:323-332. [PMID: 29627708 DOI: 10.1016/j.watres.2017.12.046] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/16/2017] [Accepted: 12/19/2017] [Indexed: 05/27/2023]
Abstract
In this study, batch experiments were carried out to investigate the key factors on sulfamethoxazole (SMX) removal kinetics in a new AOPs based on the combination of zero valent iron (Fe0) and bisulfite (S(IV)). With the increase of Fe0 from 0.25 mM to 5 mM, the removal rate of SMX was linearly increased in the Fe0/S(IV)/O2 system by accelerating the activation of S(IV) and Fe0 corrosion to accelerate. In the first 10 min of reaction, the increasing concentration of S(IV) inhibited SMX removal after since the high S(IV) concentration quenched reactive oxidative species (ROS). Then SMX removal rate was accelerated with the increase of S(IV) concentration after S(IV) were consumed up. The optimal ratio of S(IV) concentrations to Fe0 concentration for SMX removal in the Fe0/S(IV)/O2 system was 1:1. With SMX concentrations increasing from 1 to 50 μM, SMX removal rate was inhibited for the limitation of ROS yields. Although the presence of SO4- and OH was confirmed by electron paramagnetic resonance (EPR) spectrum, OH was identified as the dominant ROS in the Fe0/S(IV)/O2 system by chemical quenching experiments. Besides, strong inhibitive effects of 1,10-phenanthroline on SMX degradation kinetics by Fe0/S(IV)/O2 proved that the generation of ROS was rely on the release of Fe(II) and Fe(III). The generation of SO4- was ascribed to the activation of S(IV) by Fe(II)/Fe(III) recycling and the activation of HSO5- by Fe(II). And OH was simultaneously transformed from SO4- and generated by Fe0/O2. Density functional theory (DFT) calculation was conducted to reveal special reactive sites on SMX for radicals attacking and predicted intermediates. Finally, four possible SMX degradation pathways were accordingly proposed in the Fe0/S(IV)/O2 system based on experimental methods and DFT calculation.
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Affiliation(s)
- Juanshan Du
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Wanqian Guo
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Huazhe Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Renli Yin
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Heshan Zheng
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Xiaochi Feng
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Di Che
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
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19
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Tai C, Zhang S, Yin Y, Dai Z, Li Y, Jiang G, Cai Y, Huang C, Shi J. Facile Photoinduced Generation of Hydroxyl Radical on a Nitrocellulose Membrane Surface and its Application in the Degradation of Organic Pollutants. CHEMSUSCHEM 2018; 11:843-847. [PMID: 29417754 DOI: 10.1002/cssc.201800047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Indexed: 06/08/2023]
Abstract
A simple, clean, and efficient method has been developed for generating hydroxyl radicals on a nitrocellulose membrane (NCM) under light of wavelengths greater than 280 nm. Hydroxyl radicals formed on the NCM surface, diffusing into the bulk solution under irradiation. Radical generation was shown to be dependent on the nature of the NCM and light, and independent of the properties of the bulk solution. The quantum yield for hydroxyl radicals from the NCM was 1.72×10-4 , which is approximately 2.46 times that from TiO2 . This hydroxyl radical generation method was preliminarily applied in the photodegradation of organic pollutants, in which electrostatic interactions between the pollutant molecules and the NCM surface were found to play a key role. Further applications of this hydroxyl radical generation method should be assessed.
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Affiliation(s)
- Chao Tai
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P. R. China
| | - Shaodong Zhang
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P. R. China
| | - Yongguang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
| | - Zhifeng Dai
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P. R. China
| | - Yanbin Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, P. R. China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
| | - Yong Cai
- Department of Chemistry and Biochemistry, Florida International University, Miami, 33199, USA
| | - Chunhua Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
| | - Jianbo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
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20
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Fadda A, Barberis A, Sanna D. Influence of pH, buffers and role of quinolinic acid, a novel iron chelating agent, in the determination of hydroxyl radical scavenging activity of plant extracts by Electron Paramagnetic Resonance (EPR). Food Chem 2017; 240:174-182. [PMID: 28946259 DOI: 10.1016/j.foodchem.2017.07.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/07/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
Abstract
The Fenton reaction is used to produce hydroxyl radicals for the evaluation of the antioxidant activity of plant extracts. In this paper the parameters affecting the production of hydroxyl radicals and their spin trapping with DMPO were studied. The use of quinolinic acid (Quin) as an Fe(II) ligand was proposed for antioxidant activity determination of Green tea, orange juice and asparagus extracts. Quin, buffers and pH affect the DMPO-OH signal intensity of the EPR spectra. Quin/Fe(II) and low pH enhance the OH generation. Phosphate and Tris-HCl buffers decrease the signal intensity measured in Fe(II)-sulfate and Fe(II)-Quin systems. The extracts were analyzed with Fenton systems containing Fe(II)-sulfate and Fe(II)-Quin with and without buffer. The highest activity was shown with Fe(II)-Quin without buffer, this system being less influenced by pH and chelating agents present in the extracts. This paper will help researchers to better design spin trapping experiments for food matrices.
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Affiliation(s)
- Angela Fadda
- Istituto di Scienze delle Produzioni Alimentari, Consiglio Nazionale delle Ricerche, Traversa La Crucca, 3., 07100 Sassari, Italy.
| | - Antonio Barberis
- Istituto di Scienze delle Produzioni Alimentari, Consiglio Nazionale delle Ricerche, Traversa La Crucca, 3., 07100 Sassari, Italy
| | - Daniele Sanna
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Traversa La Crucca, 3., 07100 Sassari, Italy
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21
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Oh MC, Piao MJ, Fernando PMDJ, Han X, Madduma Hewage SRK, Park JE, Ko MS, Jung U, Kim IG, Hyun JW. Baicalein Protects Human Skin Cells against Ultraviolet B-Induced Oxidative Stress. Biomol Ther (Seoul) 2016; 24:616-622. [PMID: 27257012 PMCID: PMC5098541 DOI: 10.4062/biomolther.2016.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/18/2016] [Accepted: 03/24/2016] [Indexed: 01/06/2023] Open
Abstract
Baicalein (5,6,7-trihydroxy-2-phenyl-chromen-4-one) is a flavone, a type of flavonoid, originally isolated from the roots of Scutellaria baicalensis. This study evaluated the protective effects of baicalein against oxidative damage-mediated apoptosis induced by ultraviolet B (UVB) radiation in a human keratinocyte cell line (HaCaT). Baicalein absorbed light within the wavelength range of UVB. In addition, baicalein decreased the level of intracellular reactive oxygen species (ROS) in response to UVB radiation. Baicalein protected cells against UVB radiation-induced DNA breaks, 8-isoprostane generation and protein modification in HaCaT cells. Furthermore, baicalein suppressed the apoptotic cell death by UVB radiation. These findings suggest that baicalein protected HaCaT cells against UVB radiation-induced cell damage and apoptosis by absorbing UVB radiation and scavenging ROS.
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Affiliation(s)
- Min Chang Oh
- School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Mei Jing Piao
- School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | | | - Xia Han
- School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | | | - Jeong Eon Park
- School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Mi Sung Ko
- College of Medicine, Soonchunhyang University, Cheonan 31140, Republic of Korea
| | - Uhee Jung
- Radiation Biotechnology Research Division, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - In Gyu Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea.,Department of Radiation Biotechnology and Applied Radioisotope, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jin Won Hyun
- School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
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22
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Fernando PMDJ, Piao MJ, Hewage SRKM, Kang HK, Yoo ES, Koh YS, Ko MH, Ko CS, Byeon SH, Mun SR, Lee NH, Hyun JW. Photo-protective effect of sargachromenol against UVB radiation-induced damage through modulating cellular antioxidant systems and apoptosis in human keratinocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 43:112-119. [PMID: 26991844 DOI: 10.1016/j.etap.2016.02.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 02/16/2016] [Accepted: 02/20/2016] [Indexed: 06/05/2023]
Abstract
The aim of this study was to evaluate the photo-preventive effects of sargachromenol (SC) against ultraviolet B (UVB)-induced oxidative stress in human keratinocytes via assessing the antioxidant properties and underlying molecular mechanisms. SC exhibited a significant scavenging effect on UVB-induced intracellular reactive oxygen species (ROS). SC attenuated UVB-induced oxidative macromolecular damage, including the protein carbonyl content, DNA strand break, and 8-isoprostane level. Furthermore, SC decreased UVB-induced Bax, cleaved caspase-9, and cleaved caspase-3 protein levels, but increased that of Bcl-2, which are well-known key mediators of apoptosis. Moreover, SC increased superoxide dismutase, catalase, and heme oxygenase-1 protein expression. Pre-treatment with SC upregulated the main transcription factor of antioxidant enzymes, erythroid 2-related factor 2 level, which was reduced by UVB irradiation. Extracellular signal-regulated kinase (ERK) and Jun N-terminal kinases (JNK) are involved in the regulation of many cellular events, including apoptosis. SC treatment reversed ERK and JNK activation induced by UVB. Collectively, these data indicate that SC can provide remarkable cytoprotection against the adverse effects of UVB radiation by modulating cellular antioxidant systems, and suggest the potential of developing a medical agent for ROS-induced skin diseases.
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Affiliation(s)
| | - Mei Jing Piao
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | | | - Hee Kyoung Kang
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Eun Sook Yoo
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Young Sang Koh
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Mi Hee Ko
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju 63243, Republic of Korea
| | - Chang Sik Ko
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju 63243, Republic of Korea
| | - Sang Hee Byeon
- Department of Chemistry and Cosmetics, College of Natural Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Seung Ri Mun
- Department of Chemistry and Cosmetics, College of Natural Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Nam Ho Lee
- Department of Chemistry and Cosmetics, College of Natural Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Jin Won Hyun
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea.
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23
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Yang Q, Lin TS, Burton C, Park SH, Ma Y. Physicochemical insights of irradiation-enhanced hydroxyl radical generation from ZnO nanoparticles. Toxicol Res (Camb) 2016; 5:482-491. [PMID: 30090362 PMCID: PMC6061809 DOI: 10.1039/c5tx00384a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 12/21/2015] [Indexed: 11/21/2022] Open
Abstract
The widespread use of zinc oxide nanoparticles (ZnO NPs) has raised environmental and human health concerns owing to their significant cytotoxicity. Although their cytotoxic effects have been associated with reactive oxygen species (ROS), the physicochemical mechanism underlying this phenomenon remains poorly understood. In this study, the physicochemical properties of ZnO NPs were systematically investigated in relation to their effect on ROS generation. Factors that were found to affect hydroxyl radical (˙OH) generation included: NP concentration, irradiation, NP hydrodynamic size, localized pH, ionic strength, NP zeta-potential, and dissolved oxygen levels. The mechanism by which ˙OH was generated under alkaline conditions was found to obey first-order reaction kinetics that followed the conversion of OH- anions and dissolved O2 to ˙OH. Based on these findings, we propose that ZnO NP cytotoxicity involves ˙OH adsorption to the nanoparticle surface, creating a highly localized source of ROS capable of potentiating oxidative damage to cellular structures. This hypothesis was evaluated with time-resolved intracellular calcium [Ca] i imaging that irradiated ZnO NPs triggered cytoplasmic calcium influxes and facilitated nuclear degradation. Together these findings present a novel physicochemical mechanism for ˙OH generation from ZnO NPs with significant implications for nanoparticle cytotoxicity and their relation to human health.
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Affiliation(s)
- Qingbo Yang
- Department of Chemistry and Center for Single Nanoparticle , Single Cell , and Single Molecule Monitoring , Missouri University of Science and Technology , Rolla , MO 65409 , USA . ; ; Tel: +1-573-341-6220
| | - Tien-Sung Lin
- Department of Chemistry , Washington University in St. Louis , St. Louis , MO 63130 , USA
| | - Casey Burton
- Department of Chemistry and Center for Single Nanoparticle , Single Cell , and Single Molecule Monitoring , Missouri University of Science and Technology , Rolla , MO 65409 , USA . ; ; Tel: +1-573-341-6220
| | - Sung-Ho Park
- Department of Chemistry , Washington University in St. Louis , St. Louis , MO 63130 , USA
| | - Yinfa Ma
- Department of Chemistry and Center for Single Nanoparticle , Single Cell , and Single Molecule Monitoring , Missouri University of Science and Technology , Rolla , MO 65409 , USA . ; ; Tel: +1-573-341-6220
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24
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Gimat A, Kasneryk V, Dupont AL, Paris S, Averseng F, Fournier J, Massiani P, Rouchon V. Investigating the DMPO-formate spin trapping method for the study of paper iron gall ink corrosion. NEW J CHEM 2016. [DOI: 10.1039/c6nj01480a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactive oxygen species evidenced in acidic iron gall inks are not hydroxyl radicals and are not linked to paper degradation.
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Affiliation(s)
- Alice Gimat
- Sorbonne Universités
- Muséum National d’histoire Naturelle
- Centre de Recherche sur la Conservation des Collections – CRCC
- USR3224
- 75005 Paris
| | - Valeryia Kasneryk
- Sorbonne Universités
- Muséum National d’histoire Naturelle
- Centre de Recherche sur la Conservation des Collections – CRCC
- USR3224
- 75005 Paris
| | - Anne-Laurence Dupont
- Sorbonne Universités
- Muséum National d’histoire Naturelle
- Centre de Recherche sur la Conservation des Collections – CRCC
- USR3224
- 75005 Paris
| | - Sabrina Paris
- Sorbonne Universités
- Muséum National d’histoire Naturelle
- Centre de Recherche sur la Conservation des Collections – CRCC
- USR3224
- 75005 Paris
| | - Frédéric Averseng
- Sorbonne Universités
- UPMC Paris 06
- UMR CNRS 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Jeanine Fournier
- Sorbonne Universités
- UPMC Paris 06
- UMR CNRS 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Pascale Massiani
- Sorbonne Universités
- UPMC Paris 06
- UMR CNRS 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Véronique Rouchon
- Sorbonne Universités
- Muséum National d’histoire Naturelle
- Centre de Recherche sur la Conservation des Collections – CRCC
- USR3224
- 75005 Paris
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25
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Fernando PMDJ, Piao MJ, Kang KA, Ryu YS, Hewage SRKM, Chae SW, Hyun JW. Rosmarinic Acid Attenuates Cell Damage against UVB Radiation-Induced Oxidative Stress via Enhancing Antioxidant Effects in Human HaCaT Cells. Biomol Ther (Seoul) 2016; 24:75-84. [PMID: 26759705 PMCID: PMC4703356 DOI: 10.4062/biomolther.2015.069] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 08/10/2015] [Accepted: 08/20/2015] [Indexed: 12/31/2022] Open
Abstract
This study was designed to investigate the cytoprotective effect of rosmarinic acid (RA) on ultraviolet B (UVB)-induced oxidative stress in HaCaT keratinocytes. RA exerted a significant cytoprotective effect by scavenging intracellular ROS induced by UVB. RA also attenuated UVB-induced oxidative macromolecular damage, including protein carbonyl content, DNA strand breaks, and the level of 8-isoprostane. Furthermore, RA increased the expression and activity of superoxide dismutase, catalase, heme oxygenase-1, and their transcription factor Nrf2, which are decreased by UVB radiation. Collectively, these data indicate that RA can provide substantial cytoprotection against the adverse effects of UVB radiation by modulating cellular antioxidant systems, and has potential to be developed as a medical agent for ROS-induced skin diseases.
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Affiliation(s)
| | - Mei Jing Piao
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Kyoung Ah Kang
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Yea Seong Ryu
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | | | - Sung Wook Chae
- Aging Research Center, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Jin Won Hyun
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Republic of Korea
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26
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Kuźnik N, Chmielniak U. Studies on the redox activity of iron N,O-complexes: Potential T 1-contrast agents. Redox Rep 2016; 21:37-44. [PMID: 26023764 PMCID: PMC6837439 DOI: 10.1179/1351000215y.0000000017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVES The goal of this study was to determine the redox activity of iron (ethylenebis[2-(o-hydroxyphenyl)glycine]) (EHPG) and (ethylenebis[2-(o-hydroxybenzyl)glycine]) (EHBG) (N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid) derivative complexes and of some N,O-salan complexes of iron. The hexadentate chelate (EHPG and EHBG) ligands varied in their substituents (polar OMe, NHAc, or lipophilic Ph), while the latter had different charge and lipophilicity. The low redox activity of these complexes is important in their potential applications as magnetic resonance imaging contrast agents. METHODS Redox activity was assessed in the entire Haber-Weiss cycle and separately in the Fenton reaction. The spin-trapping method with 5,5-dimethyl-1-pyrroline-N-oxide monitored in electron paramagnetic resonance was used. The standard Mn marker was applied as a reference for quantitative analysis. Additionally, ascorbate oxidation was analyzed with UV-Vis spectrophotometry. RESULTS Both the Haber-Weiss cycle and in particular the Fenton reaction showed low redox activity of the studied complexes, which did not exceed 30% of [Fe(EDTA)]- or FeCl3 activity. The N,O-salan complexes expressed even lower activity, i.e. 10-20% activity of [Fe(EDTA)]-. DISCUSSION For the EHPG and EHBG complexes, it is likely that hydrophobicity and the possibility of H-bond formation play a major role in the resulting redox effects. For this reason, chelates equipped with phenyl groups in the majority belong to less redox-active complexes. For N,O-salan complexes, activity is not correlated with the charge of the coordination sphere, but again, the highly hydrophobic character of the groups and the non-pendant substituents capable of H-bonding that are present in these ligands limit the affinity of hydrophilic species.
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Affiliation(s)
- Nikodem Kuźnik
- Faculty of Chemistry, Silesian University of
Technology, M. Strzody 9, 44-100 Gliwice,
Poland
| | - Urszula Chmielniak
- Faculty of Chemistry, Silesian University of
Technology, M. Strzody 9, 44-100 Gliwice,
Poland
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Photolysis of Low-Brominated Diphenyl Ethers and Their Reactive Oxygen Species-Related Reaction Mechanisms in an Aqueous System. PLoS One 2015; 10:e0135400. [PMID: 26274605 PMCID: PMC4537200 DOI: 10.1371/journal.pone.0135400] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 07/21/2015] [Indexed: 11/19/2022] Open
Abstract
To date, no report was concerned with participation of reactive oxygen species in waters during photolysis of low-brominated diphenyl ethers (LBDEs). Herein, we found that electron spin resonance (ESR) signals rapidly increased with increasing irradiation time in the solution of LBDEs and 4-oxo-TMP solutions. But this phenomenon did not occur in the presence of NaN3 (1O2 quencher) demonstrating generation of 1O2 in process of LBDEs photolysis. The indirect photolytic contribution rate for BDE-47 and BDE-28 was 18.8% and 17.3% via 1O2, and 4.9% and 6.6% via ·OH, respectively. Both D2O and NaN3 experiments proved that the indirect photolysis of LBDEs was primarily attributable to 1O2. The bimolecular reaction rate constants of 1O2 with BDE-47 and BDE-28 were 3.12 and 3.64 × 106 M-1 s-1, respectively. The rate constants for BDE-47 and BDE-28 (9.01 and 17.52 × 10−3 min-1), added to isopropyl alcohol, were very close to those (9.65 and 18.42 × 10−3 min-1) in water, proving the less indirect photolytic contribution of ·OH in water. This is the first comprehensive investigation examining the indirect photolysis of LBDEs in aqueous solution.
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Han X, Piao MJ, Kim KC, Madduma Hewage SRK, Yoo ES, Koh YS, Kang HK, Shin JH, Park Y, Yoo SJ, Chae S, Hyun JW. Isorhamnetin Protects Human Keratinocytes against Ultraviolet B-Induced Cell Damage. Biomol Ther (Seoul) 2015; 23:357-66. [PMID: 26157553 PMCID: PMC4489831 DOI: 10.4062/biomolther.2015.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 01/29/2015] [Accepted: 02/26/2015] [Indexed: 12/18/2022] Open
Abstract
Isorhamnetin (3-methylquercetin) is a flavonoid derived from the fruits of certain medicinal plants. This study investigated the photoprotective properties of isorhamnetin against cell damage and apoptosis resulting from excessive ultraviolet (UV) B exposure in human HaCaT keratinocytes. Isorhamnetin eliminated UVB-induced intracellular reactive oxygen species (ROS) and attenuated the oxidative modification of DNA, lipids, and proteins in response to UVB radiation. Moreover, isorhamnetin repressed UVB-facilitated programmed cell death in the keratinocytes, as evidenced by a reduction in apoptotic body formation, and nuclear fragmentation. Additionally, isorhamnetin suppressed the ability of UVB light to trigger mitochondrial dysfunction. Taken together, these results indicate that isorhamnetin has the potential to protect human keratinocytes against UVB-induced cell damage and death.
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Affiliation(s)
- Xia Han
- School of Medicine, Jeju National University, Jeju 690-756
| | - Mei Jing Piao
- School of Medicine, Jeju National University, Jeju 690-756
| | - Ki Cheon Kim
- School of Medicine, Jeju National University, Jeju 690-756
| | | | - Eun Sook Yoo
- School of Medicine, Jeju National University, Jeju 690-756
| | - Young Sang Koh
- School of Medicine, Jeju National University, Jeju 690-756
| | | | - Jennifer H Shin
- Department of Mechanical Engineering & Graduate School of Medical Science and Engineering, KAIST, Daejeon 305-701
| | - Yeunsoo Park
- National Fusion Research Institute, Plasma Technology Research Center, Gunsan 573-540
| | - Suk Jae Yoo
- National Fusion Research Institute, Plasma Technology Research Center, Gunsan 573-540
| | - Sungwook Chae
- Aging Research Center, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
| | - Jin Won Hyun
- School of Medicine, Jeju National University, Jeju 690-756
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29
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Kwon YW, Jin JI. Characterizations of damages of DNA caused by plasma treatment and reactive species formed thereby. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3530] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Young-Wan Kwon
- KU-KIST Graduate School of Converging Science and Technology; Korea University; Seoul 136-701 Korea
| | - Jung-Il Jin
- KU-KIST Graduate School of Converging Science and Technology; Korea University; Seoul 136-701 Korea
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Kim S, Ginsbach JW, Lee JY, Peterson RL, Liu JJ, Siegler MA, Sarjeant AA, Solomon EI, Karlin KD. Amine oxidative N-dealkylation via cupric hydroperoxide Cu-OOH homolytic cleavage followed by site-specific fenton chemistry. J Am Chem Soc 2015; 137:2867-74. [PMID: 25706825 PMCID: PMC4482616 DOI: 10.1021/ja508371q] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Copper(II) hydroperoxide species are significant intermediates in processes such as fuel cells and (bio)chemical oxidations, all involving stepwise reduction of molecular oxygen. We previously reported a Cu(II)-OOH species that performs oxidative N-dealkylation on a dibenzylamino group that is appended to the 6-position of a pyridyl donor of a tripodal tetradentate ligand. To obtain insights into the mechanism of this process, reaction kinetics and products were determined employing ligand substrates with various para-substituent dibenzyl pairs (-H,-H; -H,-Cl; -H,-OMe, and -Cl,-OMe), or with partially or fully deuterated dibenzyl N-(CH2Ph)2 moieties. A series of ligand-copper(II) bis-perchlorate complexes were synthesized, characterized, and the X-ray structures of the -H,-OMe analogue were determined. The corresponding metastable Cu(II)-OOH species were generated by addition of H2O2/base in acetone at -90 °C. These convert (t1/2 ≈ 53 s) to oxidatively N-dealkylated products, producing para-substituted benzaldehydes. Based on the experimental observations and supporting DFT calculations, a reaction mechanism involving dibenzylamine H-atom abstraction or electron-transfer oxidation by the Cu(II)-OOH entity could be ruled out. It is concluded that the chemistry proceeds by rate limiting Cu-O homolytic cleavage of the Cu(II)-(OOH) species, followed by site-specific copper Fenton chemistry. As a process of broad interest in copper as well as iron oxidative (bio)chemistries, a detailed computational analysis was performed, indicating that a Cu(I)OOH species undergoes O-O homolytic cleavage to yield a hydroxyl radical and Cu(II)OH rather than heterolytic cleavage to yield water and a Cu(II)-O(•-) species.
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Affiliation(s)
- Sunghee Kim
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Jake W. Ginsbach
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Jung Yoon Lee
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Ryan L. Peterson
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Jeffrey J. Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Amy A. Sarjeant
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Edward I. Solomon
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Kenneth D. Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
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31
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Madduma Hewage SRK, Piao MJ, Kim KC, Cha JW, Han X, Choi YH, Chae S, Hyun JW. Galangin (3,5,7-trihydroxyflavone) shields human keratinocytes from ultraviolet B-induced oxidative stress. Biomol Ther (Seoul) 2015; 23:165-73. [PMID: 25767685 PMCID: PMC4354318 DOI: 10.4062/biomolther.2014.130] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/13/2015] [Accepted: 01/20/2015] [Indexed: 01/16/2023] Open
Abstract
Most skin damage caused by ultraviolet B (UVB) radiation is owing to the generation of reactive oxygen species. Phytochemicals can act as antioxidants against UVB-induced oxidative stress. This study investigated the protective effects of the flavone galangin against UVB-induced oxidative damage in human keratinocytes. Galangin efficiently scavenged free radicals and reduced UVB-induced damage to cellular macromolecules, such as DNA, lipids, and proteins. Furthermore, galangin rescued cells undergoing apoptosis induced by UVB radiation via recovering mitochondrial polarization and down-regulating apoptotic proteins. These results showed that galangin protects human keratinocytes against UVB radiation-induced cellular damage and apoptosis via its antioxidant effects.
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Affiliation(s)
| | - Mei Jing Piao
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea
| | - Ki Cheon Kim
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea
| | - Ji Won Cha
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea
| | - Xia Han
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dongeui University, Busan 614-052, Republic of Korea
| | - Sungwook Chae
- Aging Research Center, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
| | - Jin Won Hyun
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea
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32
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Liang N, Kitts DD. Antioxidant property of coffee components: assessment of methods that define mechanisms of action. Molecules 2014; 19:19180-208. [PMID: 25415479 PMCID: PMC6270823 DOI: 10.3390/molecules191119180] [Citation(s) in RCA: 254] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/04/2014] [Accepted: 11/04/2014] [Indexed: 02/08/2023] Open
Abstract
Coffee is a rich source of dietary antioxidants, and this property, coupled with the fact that coffee is one of the world's most popular beverages, has led to the understanding that coffee is a major contributor to dietary antioxidant intake. Brewed coffee is a complex food matrix with numerous phytochemical components that have antioxidant activity capable of scavenging free radicals, donating hydrogen and electrons, providing reducing activity and also acting as metal ion pro-oxidant chelators. More recent studies have shown that coffee components can trigger tissue antioxidant gene expression and protect against gastrointestinal oxidative stress. This paper will describe different in vitro, cell-free and cell-based assays that both characterize and compare the antioxidant capacity and mechanism of action of coffee and its bioactive constituents. Moreover, evidence of cellular antioxidant activity and correlated specific genomic events induced by coffee components, which are relevant to antioxidant function in both animal and human studies, will be discussed.
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Affiliation(s)
- Ningjian Liang
- Food, Nutrition and Health, Faculty of Land and Food Systems, the University of British Columbia 2205 East Mall, Vancouver, BC V6T-1Z4, Canada.
| | - David D Kitts
- Food, Nutrition and Health, Faculty of Land and Food Systems, the University of British Columbia 2205 East Mall, Vancouver, BC V6T-1Z4, Canada.
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33
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Americanin B protects cultured human keratinocytes against oxidative stress by exerting antioxidant effects. In Vitro Cell Dev Biol Anim 2014; 50:766-77. [DOI: 10.1007/s11626-014-9759-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 04/07/2014] [Indexed: 01/27/2023]
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Cha JW, Piao MJ, Kim KC, Yao CW, Zheng J, Kim SM, Hyun CL, Ahn YS, Hyun JW. The Polyphenol Chlorogenic Acid Attenuates UVB-mediated Oxidative Stress in Human HaCaT Keratinocytes. Biomol Ther (Seoul) 2014; 22:136-42. [PMID: 24753819 PMCID: PMC3975475 DOI: 10.4062/biomolther.2014.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 02/20/2014] [Accepted: 03/06/2014] [Indexed: 12/20/2022] Open
Abstract
We investigated the protective effects of chlorogenic acid (CGA), a polyphenol compound, on oxidative damage induced by UVB exposure on human HaCaT cells. In a cell-free system, CGA scavenged 1,1-diphenyl-2-picrylhydrazyl radicals, superoxide anions, hydroxyl radicals, and intracellular reactive oxygen species (ROS) generated by hydrogen peroxide and ultraviolet B (UVB). Furthermore, CGA absorbed electromagnetic radiation in the UVB range (280–320 nm). UVB exposure resulted in damage to cellular DNA, as demonstrated in a comet assay; pre-treatment of cells with CGA prior to UVB irradiation prevented DNA damage and increased cell viability. Furthermore, CGA pre-treatment prevented or ameliorated apoptosis-related changes in UVB-exposed cells, including the formation of apoptotic bodies, disruption of mitochondrial membrane potential, and alterations in the levels of the apoptosis-related proteins Bcl-2, Bax, and caspase-3. Our findings suggest that CGA protects cells from oxidative stress induced by UVB radiation.
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Affiliation(s)
- Ji Won Cha
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Mei Jing Piao
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Ki Cheon Kim
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Cheng Wen Yao
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jian Zheng
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Seong Min Kim
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Chang Lim Hyun
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
| | - Yong Seok Ahn
- Research Institute of Processing from Jeju Fisher Food, Choung Ryong Fisheries Co., LTD, Jeju 697-943, Republic of Korea
| | - Jin Won Hyun
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
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35
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Cha JW, Piao MJ, Kim KC, Zheng J, Yao CW, Hyun CL, Kang HK, Yoo ES, Koh YS, Lee NH, Ko MH, Hyun JW. Protective Effect of 3,4-Dihydroxybenzoic Acid Isolated from Cladophora wrightiana Harvey Against Ultraviolet B Radiation-Induced Cell Damage in Human HaCaT Keratinocytes. Appl Biochem Biotechnol 2014; 172:2582-92. [DOI: 10.1007/s12010-013-0711-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/25/2013] [Indexed: 12/29/2022]
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36
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Zheng J, Piao MJ, Keum YS, Kim HS, Hyun JW. Fucoxanthin Protects Cultured Human Keratinocytes against Oxidative Stress by Blocking Free Radicals and Inhibiting Apoptosis. Biomol Ther (Seoul) 2013; 21:270-6. [PMID: 24244811 PMCID: PMC3819899 DOI: 10.4062/biomolther.2013.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/05/2013] [Accepted: 05/08/2013] [Indexed: 11/29/2022] Open
Abstract
Fucoxanthin is an important carotenoid derived from edible brown seaweeds and is used in indigenous herbal medicines. The aim of the present study was to examine the cytoprotective effects of fucoxanthin against hydrogen peroxide-induced cell damage. Fucoxanthin decreased the level of intracellular reactive oxygen species, as assessed by fluorescence spectrometry performed after staining cultured human HaCaT keratinocytes with 2',7'-dichlorodihydrofl uorescein diacetate. In addition, electron spin resonance spectrometry showed that fucoxanthin scavenged hydroxyl radical generated by the Fenton reaction in a cell-free system. Fucoxanthin also inhibited comet tail formation and phospho-histone H2A.X expression, suggesting that it prevents hydrogen peroxideinduced cellular DNA damage. Furthermore, the compound reduced the number of apoptotic bodies stained with Hoechst 33342, indicating that it protected keratinocytes against hydrogen peroxide-induced apoptotic cell death. Finally, fucoxanthin prevented the loss of mitochondrial membrane potential. These protective actions were accompanied by the down-regulation of apoptosispromoting mediators (i.e., B-cell lymphoma-2-associated x protein, caspase-9, and caspase-3) and the up-regulation of an apoptosis inhibitor (B-cell lymphoma-2). Taken together, the results of this study suggest that fucoxanthin defends keratinocytes against oxidative damage by scavenging ROS and inhibiting apoptosis.
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Affiliation(s)
- Jian Zheng
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756
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37
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Yao CW, Piao MJ, Kim KC, Zheng J, Cha JW, Hyun JW. 6'-o-galloylpaeoniflorin protects human keratinocytes against oxidative stress-induced cell damage. Biomol Ther (Seoul) 2013; 21:349-57. [PMID: 24244822 PMCID: PMC3825198 DOI: 10.4062/biomolther.2013.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 02/07/2023] Open
Abstract
6'-O-galloylpaeoniflorin (GPF) is a galloylated derivate of paeoniflorin and a key chemical constituent of the peony root, a perennial flowering plant that is widely used as an herbal medicine in East Asia. This study is the first investigation of the cytoprotective effects of GPF against hydrogen peroxide (H2O2)-induced cell injury and death in human HaCaT keratinocytes. GPF demonstrated a significant scavenging capacity against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical, H2O2-generated intracellular reactive oxygen species (ROS), the superoxide anion radical (O2-), and the hydroxyl radical (•OH). GPF also safeguarded HaCaT keratinocytes against H2O2-provoked apoptotic cell death and attenuated oxidative macromolecular damage to DNA, lipids, and proteins. The compound exerted its cytoprotective actions in keratinocytes at least in part by decreasing the number of DNA strand breaks, the levels of 8-isoprostane (a stable end-product of lipid peroxidation), and the formation of carbonylated protein species. Taken together, these results indicate that GPF may be developed as a cytoprotector against ROS-mediated oxidative stress.
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Affiliation(s)
- Cheng Wen Yao
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 690-756, Republic of Korea
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Piao MJ, Kang KA, Kim KC, Chae S, Kim GO, Shin T, Kim HS, Hyun JW. Diphlorethohydroxycarmalol attenuated cell damage against UVB radiation via enhancing antioxidant effects and absorbing UVB ray in human HaCaT keratinocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:680-688. [PMID: 23892284 DOI: 10.1016/j.etap.2013.06.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 06/12/2013] [Accepted: 06/20/2013] [Indexed: 06/02/2023]
Abstract
Exposure of human skin to excessive ultraviolet B (UVB) radiation induces pathophysiological processes via the generation of reactive oxygen species (ROS) in skin cells, such as keratinocytes. This study investigated the ability of diphlorethohydroxycarmalol (DPHC) to protect human keratinocytes (HaCaT) against UVB-induced cell damage. DPHC restored cell viability that was reduced by UVB light. DPHC had an absorption maximum close to the UVB spectrum and decreased UVB-induced intracellular ROS levels, increased levels of reduced glutathione, activated superoxide dismutase and catalase. DPHC also decreased UVB-mediated damage to cellular components, including lipids, proteins, DNA, and attenuated UVB-induced apoptosis. These results suggest that DPHC safeguards human keratinocytes against UVB-induced cell damage by absorbing UVB ray, scavenging ROS and enhancing antioxidant system.
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Affiliation(s)
- Mei Jing Piao
- School of Medicine, Jeju National University, Jeju 690-756, Republic of Korea
| | - Kyoung Ah Kang
- School of Medicine, Jeju National University, Jeju 690-756, Republic of Korea
| | - Ki Cheon Kim
- School of Medicine, Jeju National University, Jeju 690-756, Republic of Korea
| | - Sungwook Chae
- Aging Research Center, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
| | - Gi Ok Kim
- Jeju Technopark Bioconvergence Center, Jeju 690-121, Republic of Korea
| | - Taekyun Shin
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 690-756, Republic of Korea
| | - Hye Sun Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-799, Republic of Korea
| | - Jin Won Hyun
- School of Medicine, Jeju National University, Jeju 690-756, Republic of Korea.
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Hyun YJ, Piao MJ, Ko MH, Lee NH, Kang HK, Yoo ES, Koh YS, Hyun JW. Photoprotective effect of Undaria crenata against ultraviolet B-induced damage to keratinocytes. J Biosci Bioeng 2013; 116:256-64. [PMID: 23474096 DOI: 10.1016/j.jbiosc.2013.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 01/11/2013] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
Abstract
Chronic exposure of the skin to ultraviolet B (UVB) radiation induces oxidative stress, which plays a crucial role in the induction of skin cancer. The brown alga Undaria crenata is a potential source of antioxidant and anti-apoptotic compounds due to its capacity to produce protective compounds against environmental factors, including UV radiation. The aim of this study was to investigate the photoprotective properties of an U. crenata ethanol extract (UCE) against UVB-induced cell damage in human HaCaT keratinocytes. UCE exhibited absorbing effect of UVB (280-320 nm) and scavenging activity against the 1,1-diphenyl-2-picrylhydrazyl radical and intracellular reactive oxygen species induced by hydrogen peroxide and UVB rays. Furthermore, electron spin resonance spectrometry revealed the significant scavenging effect of UCE against superoxide anion and hydroxyl radical. UCE reduced UVB-induced apoptosis, as shown by a decrease in apoptotic bodies and nuclear and DNA fragmentation, resulting in the recovery of cell viability. UCE also decreased the degree of UVB-induced oxidative stress to lipids, proteins, and DNA as shown by a decrease in 8-isoprostane level, protein carbonylation and DNA tails. These results suggest that UCE protects human keratinocytes against UVB-induced oxidative stress.
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Affiliation(s)
- Yu Jae Hyun
- Jeju National University, School of Medicine, Jeju 690-756, Republic of Korea
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Menager M, Sarakha M. Simulated solar light phototransformation of organophosphorus azinphos methyl at the surface of clays and goethite. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:765-772. [PMID: 23214474 DOI: 10.1021/es301866f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The photochemical behavior of the pesticide azinphos methyl at the surface of clays (kaolinite, bentonite) and goethite was studied using Suntest setup (λ > 300 nm). The quantum yield on the clays was found to be roughly three times lower than that in aqueous solution. However, the photochemical efficiency was much higher at the surface of goethite owing to its photocatalytic activity through the hydroxyl radical production. The added humic substances on kaolonite show an inhibition of azinphos methyl degradation while the incorporation of iron(III) aquacomplexes leads to an important increase of the disappearance together with the formation of iron(II). Hydroxyl radical species were found to be formed either by excitation of goethite or clays. The goethite support acts as a more efficient catalyst for the formation of these reactive oxygen species. The photodecomposition reactions observed were (i) hydrolysis process leading to the formation of benzotriazone and the oxidation of the P = S bond giving rise to the formation of the oxon derivative, and (ii) homolytic cleavage of the N-C and C-S bonds of the organophosphorus bridge leading to the formation of dimers that appear to be specific to the irradiation at the surface of solid supports since they were not observed when the irradiation was performed in aqueous media: a statement that is related to the presence of aggregates at the surface of solid supports.
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Affiliation(s)
- Matthieu Menager
- Clermont Université, Université Blaise Pascal, ICCF UMR CNRS 6296, équipe de Photochimie, BP 80026, F-63171 Aubière Cedex, France
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An ethanol extract derived from Bonnemaisonia hamifera scavenges ultraviolet B (UVB) radiation-induced reactive oxygen species and attenuates UVB-induced cell damage in human keratinocytes. Mar Drugs 2012; 10:2826-45. [PMID: 23242204 PMCID: PMC3528129 DOI: 10.3390/md10122826] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/30/2012] [Accepted: 12/05/2012] [Indexed: 01/24/2023] Open
Abstract
The present study investigated the photoprotective properties of an ethanol extract derived from the red alga Bonnemaisonia hamifera against ultraviolet B (UVB)-induced cell damage in human HaCaT keratinocytes. The Bonnemaisonia hamifera ethanol extract (BHE) scavenged the superoxide anion generated by the xanthine/xanthine oxidase system and the hydroxyl radical generated by the Fenton reaction (FeSO4 + H2O2), both of which were detected by using electron spin resonance spectrometry. In addition, BHE exhibited scavenging activity against the 1,1-diphenyl-2-picrylhydrazyl radical and intracellular reactive oxygen species (ROS) that were induced by either hydrogen peroxide or UVB radiation. BHE reduced UVB-induced apoptosis, as shown by decreased apoptotic body formation and DNA fragmentation. BHE also attenuated DNA damage and the elevated levels of 8-isoprostane and protein carbonyls resulting from UVB-mediated oxidative stress. Furthermore, BHE absorbed electromagnetic radiation in the UVB range (280–320 nm). These results suggest that BHE protects human HaCaT keratinocytes against UVB-induced oxidative damage by scavenging ROS and absorbing UVB photons, thereby reducing injury to cellular components.
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Chondracanthus tenellus (Harvey) hommersand extract protects the human keratinocyte cell line by blocking free radicals and UVB radiation-induced cell damage. In Vitro Cell Dev Biol Anim 2012; 48:666-74. [PMID: 23093465 DOI: 10.1007/s11626-012-9564-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 09/20/2012] [Indexed: 01/10/2023]
Abstract
The aim of this study was to investigate the protective effects of the ethanol extract of the red algae Chondracanthus tenellus (Harvey) Hommersand (CTE) on cultured human keratinocyte cell line. The cellular protection conferred by CTE was evidenced by the ability of the extract to absorb ultraviolet B (UVB; 280-320 nm) and to scavenge the radical 1,1-diphenyl-2-picrylhydrazyl, as well as intracellular reactive oxygen species (ROS), induced by either hydrogen peroxide (H(2)O(2)) or UVB radiation. In addition, both superoxide anion generated by the xanthine/xanthine oxidase system and hydroxyl radical generated by the Fenton reaction (FeSO(4) + H(2)O(2)) were scavenged by CTE, as confirmed using electron spin resonance spectrometry. In the human keratinocyte cell line, CTE decreased the degree of injury resulting from UVB-induced oxidative stress to lipids, proteins, and DNA. CTE-treated cells also showed a reduction in UVB-induced apoptosis, as exemplified by fewer apoptotic bodies and less DNA fragmentation. Taken together, these results suggest that CTE confers protection on the human keratinocyte cell line against UVB-induced oxidative stress by absorbing UVB ray and scavenging ROS, thereby reducing injury to cellular constituents.
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Hyun YJ, Piao MJ, Zhang R, Choi YH, Chae S, Hyun JW. Photo-protection by 3-bromo-4, 5-dihydroxybenzaldehyde against ultraviolet B-induced oxidative stress in human keratinocytes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 83:71-78. [PMID: 22795593 DOI: 10.1016/j.ecoenv.2012.06.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 06/09/2012] [Accepted: 06/14/2012] [Indexed: 06/01/2023]
Abstract
Exposure of the skin to ultraviolet B (UVB) radiation leads to epidermal damage and the generation of reactive oxygen species (ROS) in skin cells, including keratinocytes. Therefore, the photo-protective effect of 3-bromo-4, 5-dihydroxybenzaldehyde (BDB) against UVB was assessed in human HaCaT keratinocytes exposed to UVB radiation in vitro. BDB restored cell viability, which decreased upon exposure to UVB radiation. BDB exhibited scavenging activity against 1, 1-diphenyl-2-picrylhydrazyl radicals, intracellular ROS induced by hydrogen peroxide (H(2)O(2)) or UVB radiation, the superoxide anion generated by the xanthine/xanthine oxidase system, and the hydroxyl radical generated by the Fenton reaction (FeSO(4)+H(2)O(2)). Moreover, BDB absorbed UVB and decreased injury resulting from UVB-induced oxidative stress to lipids, proteins and DNA. Finally, BDB reduced UVB-induced apoptosis, as exemplified by fewer apoptotic bodies and a reduction in DNA fragmentation. Taken together, these results suggest that BDB protects human keratinocytes against UVB-induced oxidative stress by scavenging ROS and absorbing UVB rays, thereby reducing injury to cellular components.
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Affiliation(s)
- Yu Jae Hyun
- Jeju National University School of Medicine, Jeju 690-756, Republic of Korea.
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Ali MR, Yong MJ, Gyawali R, Mosaddik A, Ryu YC, Cho SK. Mango (Mangifera indica L.) peel extracts inhibit proliferation of HeLa human cervical carcinoma cell via induction of apoptosis. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s13765-012-1024-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Thibon A, Jollet V, Ribal C, Sénéchal-David K, Billon L, Sorokin AB, Banse F. Hydroxylation of Aromatics with the Help of a Non-Haem FeOOH: A Mechanistic Study under Single-Turnover and Catalytic Conditions. Chemistry 2012; 18:2715-24. [DOI: 10.1002/chem.201102252] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Indexed: 11/12/2022]
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Kim AD, Zhang R, Kang KA, You HJ, Hyun JW. Increased glutathione synthesis following Nrf2 activation by vanadyl sulfate in human chang liver cells. Int J Mol Sci 2011; 12:8878-94. [PMID: 22272109 PMCID: PMC3257106 DOI: 10.3390/ijms12128878] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/03/2011] [Accepted: 11/21/2011] [Indexed: 01/28/2023] Open
Abstract
Jeju ground water, containing vanadium compounds, was shown to increase glutathione (GSH) levels as determined by a colorimetric assay and confocal microscopy. To investigate whether the effects of Jeju ground water on GSH were specifically mediated by vanadium compounds, human Chang liver cells were incubated for 10 passages in media containing deionized distilled water (DDW), Jeju ground water (S1 and S3), and vanadyl sulfate (VOSO(4)). Vanadyl sulfate scavenged superoxide anion, hydroxyl radical and intracellular reactive oxygen species. Vanadyl sulfate effectively increased cellular GSH level and up-regulated mRNA and protein expression of a catalytic subunit of glutamate cysteine ligase (GCLC), which is involved in GSH synthesis. The induction of GCLC expression by vanadyl sulfate was found to be mediated by transcription factor erythroid transcription factor NF-E2 (Nrf2), which critically regulates GCLC by binding to the antioxidant response elements (AREs). Vanadyl sulfate treatment increased the nuclear translocation of Nrf2 and the accumulation of phosphorylated Nrf2. Extracellular regulated kinase (ERK) contributed to ARE-driven GCLC expression via Nrf2 activation. Vanadyl sulfate induced the expression of the active phospho form of ERK. Taken together, these results suggest that the increase in GSH level by Jeju ground water is, at least in part, due to the effects of vanadyl sulfate via the Nrf2-mediated induction of GCLC.
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Affiliation(s)
- Areum Daseul Kim
- School of Medicine, Jeju National University, Jeju 690-756, Korea; E-Mails: (A.D.K.); (R.Z.)
| | - Rui Zhang
- School of Medicine, Jeju National University, Jeju 690-756, Korea; E-Mails: (A.D.K.); (R.Z.)
| | - Kyoung Ah Kang
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Korea; E-Mail:
| | - Ho Jin You
- Department of Biomaterials, DNA Repair Center, Chosun University, Gwangju 501-759, Korea; E-Mail:
| | - Jin Won Hyun
- School of Medicine, Jeju National University, Jeju 690-756, Korea; E-Mails: (A.D.K.); (R.Z.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-064-754-3838; Fax: +82-064-702-2687
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Piao MJ, Yoon WJ, Kang HK, Yoo ES, Koh YS, Kim DS, Lee NH, Hyun JW. Protective effect of the ethyl acetate fraction of Sargassum muticum against ultraviolet B-irradiated damage in human keratinocytes. Int J Mol Sci 2011; 12:8146-60. [PMID: 22174656 PMCID: PMC3233462 DOI: 10.3390/ijms12118146] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 10/08/2011] [Accepted: 11/15/2011] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to investigate the cytoprotective properties of the ethyl acetate fraction of Sargassum muticum (SME) against ultraviolet B (UVB)-induced cell damage in human keratinocytes (HaCaT cells). SME exhibited scavenging activity toward the 1,1-diphenyl-2-picrylhydrazyl radicals and hydrogen peroxide (H(2)O(2)) and UVB-induced intracellular reactive oxygen species (ROS). SME also scavenged the hydroxyl radicals generated by the Fenton reaction (FeSO(4) + H(2)O(2)), which was detected using electron spin resonance spectrometry. In addition, SME decreased the level of lipid peroxidation that was increased by UVB radiation, and restored the level of protein expression and the activities of antioxidant enzymes that were decreased by UVB radiation. Furthermore, SME reduced UVB-induced apoptosis as shown by decreased DNA fragmentation and numbers of apoptotic bodies. These results suggest that SME protects human keratinocytes against UVB-induced oxidative stress by enhancing antioxidant activity in cells, thereby inhibiting apoptosis.
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Affiliation(s)
- Mei Jing Piao
- School of Medicine, Jeju National University, Jeju 690-756, South Korea; E-Mails: (M.J.P.); (H.K.K.); (E.S.Y.); (Y.S.K.)
| | - Weon Jong Yoon
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju 699-943, South Korea; E-Mails: (W.J.Y.); (D.S.K.)
| | - Hee Kyoung Kang
- School of Medicine, Jeju National University, Jeju 690-756, South Korea; E-Mails: (M.J.P.); (H.K.K.); (E.S.Y.); (Y.S.K.)
| | - Eun Sook Yoo
- School of Medicine, Jeju National University, Jeju 690-756, South Korea; E-Mails: (M.J.P.); (H.K.K.); (E.S.Y.); (Y.S.K.)
| | - Young Sang Koh
- School of Medicine, Jeju National University, Jeju 690-756, South Korea; E-Mails: (M.J.P.); (H.K.K.); (E.S.Y.); (Y.S.K.)
| | - Dong Sam Kim
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju 699-943, South Korea; E-Mails: (W.J.Y.); (D.S.K.)
| | - Nam Ho Lee
- Department of Chemistry, College of Natural Sciences, Jeju National University, Jeju 690-756, South Korea; E-Mail:
| | - Jin Won Hyun
- School of Medicine, Jeju National University, Jeju 690-756, South Korea; E-Mails: (M.J.P.); (H.K.K.); (E.S.Y.); (Y.S.K.)
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Szterk A, Stefaniuk I, Waszkiewicz-Robak B, Roszko M. Oxidative Stability of Lipids by Means of EPR Spectroscopy and Chemiluminescence. J AM OIL CHEM SOC 2010. [DOI: 10.1007/s11746-010-1715-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nieto-Juarez JI, Pierzchła K, Sienkiewicz A, Kohn T. Inactivation of MS2 coliphage in Fenton and Fenton-like systems: role of transition metals, hydrogen peroxide and sunlight. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:3351-6. [PMID: 20356037 DOI: 10.1021/es903739f] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The inactivation of coliphage MS2 by iron- and copper-catalyzed Fenton systems was studied to assess the importance of this process for virus inactivation in natural systems and during water treatment by advanced oxidation processes. The influence of H(2)O(2) (3-50 microM) and metal (1-10 microM) concentrations, HO(*) production, and sunlight on inactivation was investigated. Inactivation was first order with respect to H(2)O(2), but the dependence on the metal concentration was more complex. In the Cu/H(2)O(2) system, the inactivation rate constant k(obs) increased with added Cu up to 2.5 microM, and then leveled off. This was consistent with Cu saturation of the solution, indicating that only soluble Cu contributed to inactivation. In contrast, inactivation in the Fe/H(2)O(2) system was governed by colloidal iron. Irradiation by sunlight only affected the Fe/H(2)O(2) system, leading to a 5.5-fold increase in k(obs) (up to 3.1 min(-1)). HO(*) production, measured by electron spin resonance, could not account for the observed inactivation in the Fe/H(2)O(2) system. Other oxidants, such as ferryl species, must therefore play a role. Experiments using bulk oxidant scavengers revealed that inactivation occurred by a caged mechanism involving oxidant production by metals located in close proximity to the virus. Overall, our results show that the Fenton/photo-Fenton process may serve as an efficient technology for virus disinfection.
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Nobushi Y, Uchikura K. Selective Detection of Hydroxyl Radical Scavenging Capacity Based on Electrogenerated Chemiluminescence Detection Using Tris(2,2'-bipyridine)ruthenium(III) by Flow Injection Analysis. Chem Pharm Bull (Tokyo) 2010; 58:117-20. [DOI: 10.1248/cpb.58.117] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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