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Jing M, Han G, Wan J, Zong W, Liu R. Differential eco-toxicological responses toward Eisenia fetida exposed to soil contaminated with naphthalene and typical metabolites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34149-1. [PMID: 38954347 DOI: 10.1007/s11356-024-34149-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Naphthalene (NAP) was frequently detected in polycyclic aromatic hydrocarbons (PAHs)-contaminated soil, and its residues may pose an eco-toxicological threat to soil organisms. The toxic effects of NAP were closely tied to phenolic and quinone metabolites in biological metabolism. However, the present knowledge concerning the eco-toxicological impacts of NAP metabolites at the animal level is scanty. Here, we assessed the differences in the eco-toxicological responses of Eisenia fetida (E. fetida) in NAP, 1-naphthol (1-NAO) or 1,4-naphthoquinone (1,4-NQ) contaminated soils. NAP, 1-NAO, and 1,4-NQ exposure triggered the onset of oxidative stress as evidenced by the destruction of the antioxidant enzyme system. The lipid peroxidation and DNA oxidative damage levels induced by 1-NAO and 1,4-NQ were higher than those of NAP. The elevation of DNA damage varied considerably depending on differences in oxidative stress and the direct mode of action of NAP or its metabolites with DNA. All three toxicants induced different degrees of physiological damage to the body wall, but only 1, 4-NQ caused the shedding of intestinal epithelial cells. The integrated biomarker response for different exposure times illustrated that the comprehensive toxicity at the animal level was 1,4-NQ > 1-NAO > NAP, and the time-dependent trends of oxidative stress responses induced by the three toxicants were similar. At the initial stage, the antioxidant system of E. fetida responded positively to the provocation, but the ability of E. fetida to resist stimulation decreased with the prolongation of time resulting in provocation oxidative damage. This study would provide new insights into the toxicological effects and biohazard of PAHs on soil animals.
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Affiliation(s)
- Mingyang Jing
- Shandong Urban Construction Vocational College, 4657# Tourism Road, Jinan, Shandong, 250100, P.R. China
| | - Guangye Han
- Shandong Academy of Environmental Sciences Co., Ltd, Licheng, 12777# Zhenyuan Road, Jinan, Shandong, 250100, P.R. China
| | - Jingqiang Wan
- School of Environmental Science and Engineering, America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, P.R. China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, 250014, Shandong, China
| | - Rutao Liu
- School of Environmental Science and Engineering, America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, P.R. China.
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Zhang S, Wang L, Kang Y, Wu J, Zhang Z. Nanomaterial-based Reactive Oxygen Species Scavengers for Osteoarthritis Therapy. Acta Biomater 2023; 162:1-19. [PMID: 36967052 DOI: 10.1016/j.actbio.2023.03.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/17/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023]
Abstract
Reactive oxygen species (ROS) play distinct but important roles in physiological and pathophysiological processes. Recent studies on osteoarthritis (OA) have suggested that ROS plays a crucial role in its development and progression, serving as key mediators in the degradation of the extracellular matrix, mitochondrial dysfunction, chondrocyte apoptosis, and OA progression. With the continuous development of nanomaterial technology, the ROS-scavenging ability and antioxidant effects of nanomaterials are being explored, with promising results already achieved in OA treatment. However, current research on nanomaterials as ROS scavengers for OA is relatively non-uniform and includes both inorganic and functionalized organic nanomaterials. Although the therapeutic efficacy of nanomaterials has been reported to be conclusive, there is still no uniformity in the timing and potential of their use in clinical practice. This paper reviews the nanomaterials currently used as ROS scavengers for OA treatment, along with their mechanisms of action, with the aim of providing a reference and direction for similar studies, and ultimately promoting the early clinical use of nanomaterials for OA treatment. STATEMENT OF SIGNIFICANCE: Reactive oxygen species (ROS) play an important role in the pathogenesis of osteoarthritis (OA). Nanomaterials serving as promising ROS scavengers have gained increasing attention in recent years. This review provides a comprehensive overview of ROS production and regulation, as well as their role in OA pathogenesis. Furthermore, this review highlights the applications of various types of nanomaterials as ROS scavengers in OA treatment and their mechanisms of action. Finally, the challenges and future prospects of nanomaterial-based ROS scavengers in OA therapy are discussed.
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Zhao T, Yan Y, Zhou B, Zhong X, Hu X, Zhang L, Huo P, Xiao K, Zhang Y, Zhang Y. Insights into reactive oxygen species formation induced by water-soluble organic compounds and transition metals using spectroscopic method. J Environ Sci (China) 2023; 124:835-845. [PMID: 36182187 DOI: 10.1016/j.jes.2022.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/19/2022] [Accepted: 02/11/2022] [Indexed: 06/16/2023]
Abstract
Ambient particulate matter (PM) can cause adverse health effects via their ability to produce Reactive Oxygen Species (ROS). Water-Soluble Organic Compounds (WSOCs), a complex mixture of organic compounds which usually coexist with Transition Metals (TMs) in PM, have been found to contribute to ROS formation. However, the interaction between WSOCs and TMs and its effect on ROS generation are still unknown. In this study, we examined the ROS concentrations of V, Zn, Suwannee River Fulvic Acid (SRFA), Suwannee River Humic Acid (SRHA) and the mixtures of V/Zn and SRFA/SRHA by using a cell-free 2',7'-Dichlorodihydrofluorescein (DCFH) assay. The results showed that V or Zn synergistically promoted ROS generated by SRFA, but had an antagonistic effect on ROS generated by SRHA. Fluorescence quenching experiments indicated that V and Zn were more prone to form stable complexes with aromatic humic acid-like component (C1) and fulvic acid-like component (C3) in SRFA and SRHA. Results suggested that the underlying mechanism involving the fulvic acid-like component in SRFA more tending to complex with TMs to facilitate ROS generation through π electron transfer. Our work showed that the complexing ability and complexing stability of atmospheric PM organics with metals could significantly affect ROS generation. It is recommended that the research deploying multiple analytical methods to quantify the impact of PM components on public health and environment is needed in the future.
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Affiliation(s)
- Tianyi Zhao
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Yu Yan
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Bian Zhou
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Xuezhen Zhong
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Xiaoyu Hu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Lijia Zhang
- Resource and Environmental Branch, China National Institute of Standardization, Haidian District, Beijing 100191, China
| | - Peng Huo
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Kang Xiao
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Yuanxun Zhang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China; Beijing Yanshan Earth Critical Zone National Research Station, Chinese Academy of Sciences, Beijing 101400, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101400, China
| | - Yang Zhang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China; Beijing Yanshan Earth Critical Zone National Research Station, Chinese Academy of Sciences, Beijing 101400, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101400, China.
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4
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Liu H, Mo T, Zhou Y, Gong H, Zhao D. Electron-rich silicon quantum dots-based charge transfer probe for highly selective chemiluminescence detection of Fe2+ in PM2.5. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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França WWM, da Silva AM, Diniz EGM, Silva HAMF, Pereira DR, De Melo AMMA, Coelho LCBB, de Azevedo Albuquerque MCP, de Araújo HDA, de Lima Aires A. Toxic, cytotoxic and genotoxic effect of plumbagin in the developmental stages of Biomphalaria glabrata (Say, 1818-intermediate host) and cercaricidal activity against the infectious agent of schistosomiasis mansoni. PEST MANAGEMENT SCIENCE 2022; 78:5172-5183. [PMID: 36053991 DOI: 10.1002/ps.7136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 06/07/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Snails of the genus Biomphalaria are intermediate hosts of Schistosoma mansoni, the main etiological agent of schistosomiasis mansoni, which affects about 236.6 million people in tropical and subtropical regions of the world. The World Health Organization recommends the population control of vector snails as one of the strategies to reduce the prevalence and incidence of schistosomiasis. In this study, molluscicidal and antiparasitic activities of plumbagin, a naturally sourced naphthoquinone with a range of biological effects, were evaluated against B. glabrata and cercariae of S. mansoni. RESULTS After 24 h of exposure, plumbagin demonstrated molluscicidal activity at low concentrations against embryos (LC50 of 0.56, 0.93, 0.68, 0.51 and 0.74 μg mL-1 for the blastula, gastrula, trochophore, veliger and hippo stage, respectively) and adult snails (LC50 of 3.56 μg mL-1 ). There were no changes in exposed snails' fecundity or fertility; however, plumbagin was able to increase the frequency of DNA damage and the number of hemocytes, with apoptosis and binucleation being the main hemocyte alterations. In addition, plumbagin showed death of S. mansoni cercariae in the concentration of 1.5 μg mL-1 in 60 min, while showing moderate toxicity to Artemia salina. CONCLUSION Plumbagin proved to be a promising substance for the control of B. glabrata population, intermediate host of S. mansoni, as well as the cercariae, infective stage for humans (definitive host), while being moderately toxic to A. salina, a crustacean widely used in ecotoxicity tests. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Wilza Wanessa Melo França
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, Brazil
| | - Adriana Maria da Silva
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | - Dewson Rocha Pereira
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | - Mônica Camelo Pessoa de Azevedo Albuquerque
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, Brazil
- Departamento de Medicina Tropical, Centro de Ciências Médicas, Universidade Federal de Pernambuco, Recife, Brazil
| | - Hallysson Douglas Andrade de Araújo
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Brazil
- Departamento de Bioquímica, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - André de Lima Aires
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, Brazil
- Departamento de Medicina Tropical, Centro de Ciências Médicas, Universidade Federal de Pernambuco, Recife, Brazil
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6
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Ma X, Wu S. Oxygenated polycyclic aromatic hydrocarbons in food: toxicity, occurrence and potential sources. Crit Rev Food Sci Nutr 2022; 64:4882-4903. [PMID: 36384378 DOI: 10.1080/10408398.2022.2146652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Oxygenated polycyclic aromatic hydrocarbons (OPAHs) are polycyclic aromatic hydrocarbons (PAHs) functionalized with at least one carbonyl group and are generally thought to be more toxic than PAHs. In this review, the physical-chemical properties, toxicity, occurrence, and potential sources of OPAHs in food were comprehensively discussed. The toxicities of 1,2-naphthoquinone, 1,4-naphthoquinone, 6H-benzo[cd]pyren-6-one, benzo[a]anthracene-7,12-quinone and 9,10-phenanthrenequinone were prominent among the OPAHs. Both 1,4-naphthoquinone and 1,2-naphthoquinone exhibited strong genotoxicity, cytotoxicity, and developmental toxicity. 6H-benzo[cd]pyren-6-one and benzo[a]anthracene-7,12-quinone showed high genotoxicity and cardiovascular toxicity. Although 9,10-phenanthrenequinone showed no genotoxicity, it exhibited almost the strongest cytotoxicity. For the majority of foods, the concentrations of OPAHs and PAHs were on the same order of magnitude. OPAHs tend to be positively correlated with the corresponding PAH concentrations in oil and fried food, while for barbequed food and seafood, no obvious correlation was found. In addition, 9-fluorenone, 9,10-anthraquinone, benzanthrone and 1,2-acenaphthenequinone had high abundance in food. Environmental pollution, food composition, storage conditions, heating methods, and other treatments influence the accumulation of OPAHs in food. Furthermore, oxygen and water played an important role in the transformation from PAHs to OPAHs. In short, this review guides the evaluation and further reduction of OPAH-related health risks in food.
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Affiliation(s)
- Xin Ma
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shimin Wu
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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Luan M, Zhang T, Li X, Yan C, Sun J, Zhi G, Shen G, Liu X, Zheng M. Investigating the relationship between mass concentration of particulate matter and reactive oxygen species based on residential coal combustion source tests. ENVIRONMENTAL RESEARCH 2022; 212:113499. [PMID: 35618007 DOI: 10.1016/j.envres.2022.113499] [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: 02/06/2022] [Revised: 05/05/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Particulate matter (PM) has been considered to be closely related to human health, especially fine particulate matter. However, whether PM mass concentration alone is a good indicator for health impact remains a challenging question. In this study, emissions from residential coal combustion (RCC), one of the important PM sources in northern China, were tested to examine the relationship between the emission factors of particle-generated reactive oxygen species (ROS) (EFROS) and PM (EFPM). A total of 24 combinations of source tests were conducted, including eight types of coal with different geological maturities (two anthracites and six bituminous) burned in three types of stoves (one honeycomb coal stove, one old chunk stove, and one new chunk stove). Here, ROS was defined as generated hydroxyl radical (·OH) by PM, and results showed EFROS from 24 residential coal combustion varied greatly by nearly 20 times. EFROS ranged 0.78-14.85 and 2.99-12.91 mg kg-1 for the emissions from honeycomb and chunk coals, respectively. Moreover, the correlation between EFROS and EFPM was significantly positive in honeycomb coal emissions (r = 0.82, p < 0.05), but it was insignificant in chunk coal emissions (r = 0.07, p > 0.05). For honeycomb coal emissions, organic carbon (OC) was quite abundant in PM and it might be the predominant contributor to both EFPM and EFROS, resulting in a strong and positive correlation. For chunk coal emissions, high EFROS was mainly related to relatively high metal emissions in AN and LVB, while the metals were not major components in PM, leading to a poor correlation between EFPM and EFROS. Therefore, this study revealed that PM was not always positively correlated with ROS from residential coal burning, and the relationship was mainly determined by the compositions of PM, suggesting PM mass concentration alone may not be the best indicator for assessing health impacts.
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Affiliation(s)
- Mengxiao Luan
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Tianle Zhang
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Xiaoying Li
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Caiqing Yan
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Jianzhong Sun
- School of Physical Education, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Guorui Zhi
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Guofeng Shen
- College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Xiaomeng Liu
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Mei Zheng
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
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Jiang X, Han Y, Qiu X, Liu J, Cheng Z, Zhang H, Wang Y, Chen X, Fan Y, Shang Y, Chen S, Hu M, Li W, Zhu T. Personal exposure to electrophilic compounds of fine particulate matter and the inflammatory response: The role of atmospheric transformation. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128559. [PMID: 35299109 DOI: 10.1016/j.jhazmat.2022.128559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/07/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Atmospheric oxidation can produce electrophilic compounds, altering the health effects induced by fine particulate matter (PM2.5); however, little is known about these electrophilic compounds or their health effects. Using electron capture negative ionization, we systematically detected 301 electrophilic compounds from personal PM2.5 samples in a panel study in urban Beijing. Most were oxygen-containing compounds with 3-17 double bond equivalents (DBE), suggesting the dominance of oxidized aromatic structures. Over 64% of the species, mostly outdoor-originated, were associated with inflammatory cytokines in both exhaled breath condensate and serum. Primary components of polycyclic aromatic hydrocarbons (PAHs) and high-DBE oxygenated PAHs, mainly from fossil fuel combustion, were positively associated with interleukin (IL)- 6, a cytokine related to oxidative homeostasis. Oxidized secondary species, particularly maleic and phthalic anhydrides, were negatively associated with IL-2/IL-8, which changed by - 3.8% to - 16.4% per one-fold increase in the abundance of the secondary source, indicating the immune disorders in response to the oxidized aerosols. Mediation analysis demonstrated the necessity of transformation products between atmospheric oxidation capacity and IL-2/IL-8 inhibition. This study provides new information on particulate electrophilic compounds and highlights the role of atmospheric chemistry in specific immune disorders.
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Affiliation(s)
- Xing Jiang
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Yiqun Han
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China; Environmental Research Group, MRC Centre for Environment and Health, Imperial College London, London W2 1PG, UK
| | - Xinghua Qiu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China.
| | - Jinming Liu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Zhen Cheng
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Hanxiyue Zhang
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Yanwen Wang
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Xi Chen
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Yunfei Fan
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Yu Shang
- Institute of Environmental Pollution and Health, Shanghai University, Shanghai 200444, PR China
| | - Shiyi Chen
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Min Hu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Weiju Li
- Peking University Hospital, Peking University, Beijing 100871, PR China
| | - Tong Zhu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, PR China
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Zhang T, Wen Y, Pan Z, Kuwahara Y, Mori K, Yamashita H, Zhao Y, Qian X. Overcoming Acidic H 2O 2/Fe(II/III) Redox-Induced Low H 2O 2 Utilization Efficiency by Carbon Quantum Dots Fenton-like Catalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:2617-2625. [PMID: 35098712 DOI: 10.1021/acs.est.1c06276] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fenton reaction has important implications in biology- and environment-related remediation. Hydroxyl radicals (•OH) and hydroxide (OH-) were formed by a reaction between Fe(II) and hydrogen peroxide (H2O2). The acidic H2O2/Fe(II/III) redox-induced low H2O2 utilization efficiency is the bottleneck of Fenton reaction. Electron paramagnetic resonance, surface-enhanced Raman scattering, and density functional theory calculation indicate that the unpaired electrons in the defects of carbon quantum dots (CQDs) and the carboxylic groups at the edge have a synergistic effect on CQDs Fenton-like catalysis. This leads to a 33-fold higher H2O2 utilization efficiency in comparison with Fe(II)/H2O2 Fenton reaction, and the pseudo-first-order reaction rate constant (kobs) increases 38-fold that of Fe(III)/H2O2 under equivalent conditions. The replacement of acidic H2O2/Fe(II/III) redox with CQD-mediated Fe(II/III) redox improves the sluggish Fe(II) generation. Highly effective production of •OH in CQDs-Fe(III)/H2O2 dramatically decreases the selectivity of toxic intermediate benzoquinone. The inorganic ions and dissolved organic matter (DOM) in real groundwater show negligible effects on the CQDs Fenton-like catalysis process. This work presents a process with a higher efficiency of utilization of H2O2in situ chemical oxidation (ISCO) to remove persistent organic pollutants.
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Affiliation(s)
- Ting Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Yichan Wen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Zhelun Pan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yixin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, P.R. China
| | - Xufang Qian
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, P.R. China
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10
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Mo Y, Booker D, Zhao S, Tang J, Jiang H, Shen J, Chen D, Li J, Jones KC, Zhang G. The application of land use regression model to investigate spatiotemporal variations of PM 2.5 in Guangzhou, China: Implications for the public health benefits of PM 2.5 reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146305. [PMID: 34030351 DOI: 10.1016/j.scitotenv.2021.146305] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 02/28/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
Understanding the intra-city variation of PM2.5 is important for air quality management and exposure assessment. In this study, to investigate the spatiotemporal variation of PM2.5 in Guangzhou, we developed land use regression (LUR) models using data from 49 routine air quality monitoring stations. The R2, adjust R2 and 10-fold cross validation R2 for the annual PM2.5 LUR model were 0.78, 0.72 and 0.66, respectively, indicating the robustness of the model. In all the LUR models, traffic variables (e.g., length of main road and the distance to nearest ancillary) were the most common variables in the LUR models, suggesting vehicle emission was the most important contributor to PM2.5 and controlling vehicle emissions would be an effective way to reduce PM2.5. The predicted PM2.5 exhibited significant variations with different land uses, with the highest value for impervious surfaces, followed by green land, cropland, forest and water areas. Guangzhou as the third largest city that PM2.5 concentration has achieved CAAQS Grade II guideline in China, it represents a useful case study city to examine the health and economic benefits of further reduction of PM2.5 to the lower concentration ranges. So, the health and economic benefits of reducing PM2.5 in Guangzhou was further estimated using the BenMAP model, based on the annual PM2.5 concentration predicted by the LUR model. The results showed that the avoided all cause mortalities were 992 cases (95% CI: 221-2140) and the corresponding economic benefits were 1478 million CNY (95% CI: 257-2524) (willingness to pay approach) if the annual PM2.5 concentration can be reduced to the annual CAAQS Grade I guideline value of 15 μg/m3. Our results are expected to provide valuable information for further air pollution control strategies in China.
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Affiliation(s)
- Yangzhi Mo
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China; National Air Quality Testing Services, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Douglas Booker
- National Air Quality Testing Services, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Shizhen Zhao
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Jiao Tang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Hongxing Jiang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Jin Shen
- Guangdong Environmental Protection Key Laboratory of Secondary Air Pollution Research, Guangdong Environmental Monitoring Center, Guangzhou, China
| | - Duohong Chen
- Guangdong Environmental Protection Key Laboratory of Secondary Air Pollution Research, Guangdong Environmental Monitoring Center, Guangzhou, China
| | - Jun Li
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Kevin C Jones
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Gan Zhang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
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11
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de Almeida PDO, Dos Santos Barbosa Jobim G, Dos Santos Ferreira CC, Rocha Bernardes L, Dias RB, Schlaepfer Sales CB, Valverde LDF, Rocha CAG, Soares MBP, Bezerra DP, de Carvalho da Silva F, Cardoso MFDC, Ferreira VF, Brito LF, Pires de Sousa L, de Vasconcellos MC, Lima ES. A new synthetic antitumor naphthoquinone induces ROS-mediated apoptosis with activation of the JNK and p38 signaling pathways. Chem Biol Interact 2021; 343:109444. [PMID: 33939975 DOI: 10.1016/j.cbi.2021.109444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/11/2020] [Accepted: 03/09/2021] [Indexed: 02/07/2023]
Abstract
Quinones are plant-derived secondary metabolites that present diverse pharmacological properties, including antibacterial, antifungal, antiviral, anti-inflammatory, antipyretic and anticancer activities. In the present study, we evaluated the cytotoxic effect of a new naphthoquinone 6b,7-dihydro-5H-cyclopenta [b]naphtho [2,1-d]furan-5,6 (9aH)-dione) (CNFD) in different tumor cell lines. CNFD displayed cytotoxic activity against different tumor cell lines, especially in MCF-7 human breast adenocarcinoma cells, which showed IC50 values of 3.06 and 0.98 μM for 24 and 48 h incubation, respectively. In wound-healing migration assays, CNFD promoted inhibition of cell migration. We have found typical hallmarks of apoptosis, such as cell shrinkage, chromatin condensation, phosphatidylserine exposure, increase of caspases-9 and-3 activation, increase of internucleosomal DNA fragmentation without affecting the cell membrane permeabilization, increase of ROS production, and loss of mitochondrial membrane potential induced by CNFD. Moreover, gene expression experiments indicated that CNFD increased the expression of the genes CDKN1A, FOS, MAX, and RAC1 and decreased the levels of mRNA transcripts of several genes, including CCND1, CDK2, SOS1, RHOA, GRB2, EGFR and KRAS. The CNFD treatment of MCF-7 cells induced the phosphorylation of c-jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinases (MAPKs) and inactivation of extracellular signal-regulated protein kinase 1/2 (ERK1/2). In a study using melanoma cells in a murine model in vivo, CNFD induced a potent anti-tumor activity. Herein, we describe, for the first time, the cytotoxicity and anti-tumor activity of CNFD and sequential mechanisms of apoptosis in MCF-7 cells. CNFD seems to be a promising candidate for anti-tumor therapy.
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Affiliation(s)
- Patricia D O de Almeida
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil
| | - Gleyce Dos Santos Barbosa Jobim
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil
| | - Caio César Dos Santos Ferreira
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil
| | - Lucas Rocha Bernardes
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil
| | - Rosane B Dias
- Laboratory of Pathology and Molecular Biology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Caroline B Schlaepfer Sales
- Laboratory of Pathology and Molecular Biology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil; Department of Biomorphology, Institute of Health Sciences, Federal University of Bahia - UFBA, Salvador, Bahia, 40110-902, Brazil
| | - Ludmila de F Valverde
- Laboratory of Pathology and Molecular Biology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Clarissa A G Rocha
- Laboratory of Pathology and Molecular Biology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Milena B P Soares
- Laboratory of Tissue Engineering and Immunopharmacology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Daniel P Bezerra
- Laboratory of Tissue Engineering and Immunopharmacology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Fernando de Carvalho da Silva
- Laboratory of Carbohydrate and Nucleotide Synthesis, Department of Organic Chemistry, Federal Fluminense University - UFF, Niterói, Rio de Janeiro, 24020-141, Brazil
| | - Mariana Filomena do Carmo Cardoso
- Laboratory of Carbohydrate and Nucleotide Synthesis, Department of Organic Chemistry, Federal Fluminense University - UFF, Niterói, Rio de Janeiro, 24020-141, Brazil
| | - Vitor Francisco Ferreira
- Laboratory of Carbohydrate and Nucleotide Synthesis, Department of Organic Chemistry, Federal Fluminense University - UFF, Niterói, Rio de Janeiro, 24020-141, Brazil
| | - Larissa F Brito
- Laboratory of Signaling in Inflammation, Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais - UFMG, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Lirlândia Pires de Sousa
- Laboratory of Signaling in Inflammation, Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais - UFMG, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Marne C de Vasconcellos
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil
| | - Emerson S Lima
- Laboratory of Biological Activity, Faculty of Pharmaceutical Sciences, Federal University of Amazonas - UFAM, Manaus, Amazonas, 69077-000, Brazil.
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12
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Lin M, Yu JZ. Assessment of oxidative potential by hydrophilic and hydrophobic fractions of water-soluble PM 2.5 and their mixture effects. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 275:116616. [PMID: 33556731 DOI: 10.1016/j.envpol.2021.116616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
Transition metals (TMs) (e.g. copper (Cu) and iron (Fe)) and certain organic compounds are known active constituents causing oxidative potential (OP) by inhaled ambient fine particulate matter (PM2.5) in lung fluid. Humic-like substances (HULIS), isolated from atmospheric PM2.5, are largely metal-free and contain mixtures of organics that are capable of complexing TMs. TMs and HULIS co-exist in the water-extractable part of PM2.5. In this work, we used a solid phase extraction procedure to isolate the water-soluble TMs in the hydrophilic fraction (HPI) and HULIS in the hydrophobic fraction (HPO) and carried out this isolation procedure to a set of 32 real-world PM2.5 samples collected in Beijing and Hong Kong, China. We quantified two OP endpoints, namely hydroxyl radical formation (denoted as OP•OH) and ascorbic acid depletion (denoted as OPAA), by the two fractions separately and combined, as well as by the bulk water-soluble aerosols. OP•OH and OPAA were well-correlated in both separate fractions and their combined mixtures or bulk water-soluble aerosols. OP by HPI far exceeded that by HPO. On a per unit PM2.5 mass basis, the Hong Kong samples on average had a higher OPAA and OP•OH than the Beijing samples due to more water-soluble Cu. For HPI, Cu was a dominant OP•OH and OPAA contributor (>80%), although water-soluble Fe was present at a concentration approximately one order of magnitude higher. Suppression effects on OP•OH were observed through comparing the OP of the bulk water-soluble aerosol with that of HPI. Our work reveals the importance of monitoring PM2.5 chemical compositions (especially water-soluble redox active metals). Furthermore, we demonstrate the need to consider metal-organic interactions when evaluating the aggregate OP by PM2.5 from individual components or apportioning OP by PM2.5 to specific chemical components.
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Affiliation(s)
- Manfei Lin
- Department of Chemistry, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jian Zhen Yu
- Department of Chemistry, Clear Water Bay, Kowloon, Hong Kong, China; Division of Environment & Sustainability, Clear Water Bay, Kowloon, Hong Kong, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China.
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13
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Dual-redox enhanced supercapacitors with sodium anthraquinone-2-sulfonate and potassium bromide. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Ge J, Chu H, Xiao Q, Hao W, Shang J, Zhu T, Sun Z, Wei X. BC and 1,4NQ-BC up-regulate the cytokines and enhance IL-33 expression in LPS pretreatment of human bronchial epithelial cells ☆. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 273:116452. [PMID: 33486252 DOI: 10.1016/j.envpol.2021.116452] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Black carbon (BC) reacts with different substances to form secondary pollutants called aged black carbon, which causes inflammation and lung damage. BC and aged BC may enhance IL-33 in vivo, which may be derived from macrophages. The pro-inflammatory effect of IL-33 makes it essential to determine the source of IL-33, so it guides us to explore how to alleviate lung injury. In this study, a human bronchial epithelial cell line of 16HBE cells was selected, and aged BC (1,4-NQ coated BC and ozone oxidized BC) was used. We found that both BC and aged BC were able to up-regulate the mRNA expression of IL-1β, IL-6, and IL-8 except IL-33. However, the Mitogen-activated protein kinases (MAPKs) and Phosphatidylinositol 3-kinase (PI3K)/Protein kinase B (AKTs) pathways remained inactive. After pretreatment with Lipopolysaccharide (LPS), IL-33 mRNA expression was significantly increased in 16HBE cells and MAPKs and PI3K/AKT were activated. These results suggested that MAPKs and PI3K/AKT pathways were involved in the elevation of IL-33. Furthermore, epithelial cells are unlikely to be the source of lung inflammation caused by elevated IL-33 in BC and aged BC.
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Affiliation(s)
- Jianhong Ge
- Department of Toxicology, School of Public Health, Peking University, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Hongqian Chu
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, PR China; Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, 101149, PR China
| | - Qianqian Xiao
- Department of Toxicology, School of Public Health, Peking University, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Weidong Hao
- Department of Toxicology, School of Public Health, Peking University, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Jing Shang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Tong Zhu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Zhaogang Sun
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, PR China; Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, 101149, PR China
| | - Xuetao Wei
- Department of Toxicology, School of Public Health, Peking University, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China.
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15
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In situ organic Fenton-like catalysis triggered by anodic polymeric intermediates for electrochemical water purification. Proc Natl Acad Sci U S A 2020; 117:30966-30972. [PMID: 33229548 DOI: 10.1073/pnas.2005035117] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Organic Fenton-like catalysis has been recently developed for water purification, but redox-active compounds have to be ex situ added as oxidant activators, causing secondary pollution problem. Electrochemical oxidation is widely used for pollutant degradation, but suffers from severe electrode fouling caused by high-resistance polymeric intermediates. Herein, we develop an in situ organic Fenton-like catalysis by using the redox-active polymeric intermediates, e.g., benzoquinone, hydroquinone, and quinhydrone, generated in electrochemical pollutant oxidation as H2O2 activators. By taking phenol as a target pollutant, we demonstrate that the in situ organic Fenton-like catalysis not only improves pollutant degradation, but also refreshes working electrode with a better catalytic stability. Both 1O2 nonradical and ·OH radical are generated in the anodic phenol conversion in the in situ organic Fenton-like catalysis. Our findings might provide a new opportunity to develop a simple, efficient, and cost-effective strategy for electrochemical water purification.
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16
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Zhu J, Shang J, Chen Y, Kuang Y, Zhu T. Reactive Oxygen Species-Related Inside-to-Outside Oxidation of Soot Particles Triggered by Visible-Light Irradiation: Physicochemical Property Changes and Oxidative Potential Enhancement. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8558-8567. [PMID: 32589839 DOI: 10.1021/acs.est.0c01150] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Modifications of the physicochemical properties and oxidative potential (OP) of soot due to visible-light irradiation and its underlying mechanisms during atmospheric aging have not been elucidated. In this study, two types of soot obtained using different air/fuel ratios (A/F) were aged under visible light with or without ozone (O3) at an atmospherically relevant level in an environmental chamber. Physicochemical characteristics and OP of aged soot were systematically measured using the dithiothreitol (DTT) assay (OPDTT). Regardless of the presence of O3, visible light markedly promoted oxidation of soot, which led to consumption of polycyclic aromatic hydrocarbons, formation of oxygen-containing functional groups, and enhancement of OPDTT values. Compared to low-A/F soot, high-A/F soot contained more elemental carbon but less organic carbon and was more sensitive to visible light by exhibiting greater changes. It was proposed that elemental carbon in soot under visible-light irradiation initiated an inside-to-outside oxidation pathway, where reactive oxygen species played an important role. This study clarified the solar irradiation-triggered self-oxidation process in soot, which is important to its atmospheric and health effects.
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17
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Caroselli S, Zwergel C, Pirolli A, Sabatino M, Xu Z, Kirsch G, Mai A, Colotti G, Altieri F, Canipari R, Valente S, Ragno R. Discovery of the First Human Arylsulfatase A Reversible Inhibitor Impairing Mouse Oocyte Fertilization. ACS Chem Biol 2020; 15:1349-1357. [PMID: 32239919 DOI: 10.1021/acschembio.9b00999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Arylsulfatase A (ARSA) plays a crucial role in the reproduction of mammals due to its involvement in the specific gamete interaction preceding sperm and egg fusion leading to fertilization. Recently, it has been shown that zona pellucida (ZP) sperm binding and in vivo fertilization in mice are markedly hampered by using a specific anti-ARSA antibody. Herein, the design and discovery of the first ARSA small molecule inhibitor based on a coumarin-containing polycycle are presented. Through a structure-based approach applied on our in-house library, compound 1r was identified as an ARSA reversible inhibitor (ARSAi); then its activity was validated through both surface plasmon resonance and biochemical inhibition experiments, the first providing a KD value of 21 μM and the latter an IC50 value of 13.2 μM. Further investigations highlighted that compound 1r induced 20% sperm death at 25 μM and also impaired sperm motility; nevertheless both the effects were mediated by ROS production, since they were rescued by the cotreatment of 1r and N-acetyl cysteine (NAC). Interestingly, while 1r was not able to hamper the ZP/sperm binding, it markedly decreased the in vitro oocyte fertilization by mouse sperm up to 60%. Notably, this effect was not hampered by 1r/NAC coadministration, hence allowing the ruling out of an ROS-dependent mechanism. In conclusion, herein is reported the first ever hit of ARSAi as a chemical tool that will enable better exploration of ARSA's biological role in fertilization as well as provide a starting point for developing 1r structure optimization aimed at increasing enzyme inhibition potency but also providing a deeper understanding of the involvement of ARSA in the fertilization pathway mechanism.
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Affiliation(s)
- Silvia Caroselli
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Section of Histology and Medical Embryology, Sapienza University of Rome, Via A. Scarpa 16, 00161 Rome, Italy
| | - Clemens Zwergel
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Department of Precision Medicine, Luigi Vanvitelli, University of Campania, Via L. De Crecchio 7, 80138 Naples, Italy
| | - Adele Pirolli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Department of Information Technology, IRBM Science Park, Via Pontina km 30, 600, 00071 Pomezia, Rome, Italy
| | - Manuela Sabatino
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Zhanjie Xu
- Université de Lorraine, UMR CNRS 7565, Structure et Réactivité des Systèmes Moléculaires Complexes, Equipe 3 (HECRIN), 1 Boulevard Arago, 57078, Metz Technopôle, France
| | - Gilbert Kirsch
- Université de Lorraine, UMR CNRS 7565, Structure et Réactivité des Systèmes Moléculaires Complexes, Equipe 3 (HECRIN), 1 Boulevard Arago, 57078, Metz Technopôle, France
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza Università di Roma, Viale Regina Elena 291, 00161 Rome, Italy
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council, c/o Department of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Fabio Altieri
- Department of Biochemical Sciences “Alessandro Rossi Fanelli”, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Rita Canipari
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Section of Histology and Medical Embryology, Sapienza University of Rome, Via A. Scarpa 16, 00161 Rome, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Rino Ragno
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Rome Center for Molecular Design, Department of Drug Chemistry and Technologies, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
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Sun Y, Feng X, Fu S. Application of response surface methodology for optimization of oxytetracycline hydrochloride degradation using hydrogen peroxide/polystyrene-supported iron phthalocyanine oxidation process. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:1308-1318. [PMID: 32597416 DOI: 10.2166/wst.2020.229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Inspired by metalloporphyrin-based enzymes, a biomimetic catalyst, R-N-Fe, was prepared by grafting iron phthalocyanine (FePc) covalently onto a macroporous chloromethylated polystyrene-divinylbenzene resin (R), which was pre-functionalized using 4-aminopyridine (4-ampy) as an axial ligand. The novel catalyst was used for the degradation of oxytetracycline hydrochloride (OTCH). The response surface methodology was employed to optimize the independent operating parameters, including temperature, catalyst amount, H2O2 dosage, and initial pH value. The results displayed that the initial pH and temperature had the most significant effect on the removal efficiency. Under optimum conditions, the OTCH removal efficiency was 93.98%. Additionally, the classical quenching experiment and electron paramagnetic resonance (EPR) test indicated that R-N-Fe could generate hydroxyl radicals by decomposing H2O2, which was the main active species for eliminating OTCH. Furthermore, R-N-Fe can be easily recycled and can maintain high stability in the reusability test, rendering it a good potential for practical application.
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Affiliation(s)
- Yue Sun
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 211189, China E-mail:
| | - Xinlei Feng
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 211189, China E-mail:
| | - Shun Fu
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 211189, China E-mail:
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19
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Fine-Tuning the Activation Mode of an 1,3-Indandione-Based Ruthenium(II)-Cymene Half-Sandwich Complex by Variation of Its Leaving Group. Molecules 2019; 24:molecules24132373. [PMID: 31252521 PMCID: PMC6651387 DOI: 10.3390/molecules24132373] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/21/2019] [Accepted: 06/22/2019] [Indexed: 12/18/2022] Open
Abstract
Fine-tuning of the properties of a recently reported 1,3-indandione-based organoruthenium complex is attempted to optimize the stability under physiological conditions. Previous work has shown its capacity of inhibiting topoisomerase IIα; however, fast aquation leads to undesired reactions and ligand cleavage in the blood stream before the tumor tissue is reached. Exchange of the chlorido ligand for six different N-donor ligands resulted in new analogs that were stable at pH 7.4 and 8.5. Only a lowered pH level, as encountered in the extracellular space of the tumor tissue, was capable of aquating the complexes. The 50% inhibitory concentration (IC50) values in three human cancer cell lines differed only slightly, and their dependence on the utilized leaving group was smaller than what would be expected from their differences in cellular accumulation, but in accordance with the very minor variation revealed in measurements of the complexes’ lipophilicity.
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da Silva Júnior EN, Jardim GAM, Jacob C, Dhawa U, Ackermann L, de Castro SL. Synthesis of quinones with highlighted biological applications: A critical update on the strategies towards bioactive compounds with emphasis on lapachones. Eur J Med Chem 2019; 179:863-915. [PMID: 31306817 DOI: 10.1016/j.ejmech.2019.06.056] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/19/2019] [Accepted: 06/19/2019] [Indexed: 01/04/2023]
Abstract
Naphthoquinones are of key importance in organic synthesis and medicinal chemistry. In the last few years, various synthetic routes have been developed to prepare bioactive compounds derived or based on lapachones. In this sense, this review is mainly focused on the synthetic aspects and strategies used for the design of these compounds on the basis of their biological activities for the development of drugs against the neglected diseases leishmaniases and Chagas disease and also cancer. Three strategies used to develop bioactive quinones are discussed and categorized: (i) C-ring modification, (ii) redox centre modification and (iii) A-ring modification. Framed within these strategies for the development of naphthoquinoidal compounds against T. cruzi. Leishmania and cancer, reactions including copper-catalyzed azide-alkyne cycloaddition (click chemistry), palladium-catalysed cross couplings, C-H activation reactions, Ullmann couplings and heterocyclisations reported up to July 2019 will be discussed. The aim of derivatisation is the generation of novel molecules that can potentially inhibit cellular organelles/processes, generate reactive oxygen species and increase lipophilicity to enhance penetration through the plasma membrane. Modified lapachones have emerged as promising prototypes for the development of drugs against leishmaniases, Chagas disease and cancer.
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Affiliation(s)
- Eufrânio N da Silva Júnior
- Laboratory of Synthetic and Heterocyclic Chemistry, Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil; Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany.
| | - Guilherme A M Jardim
- Laboratory of Synthetic and Heterocyclic Chemistry, Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil; Federal University of Santa Catarina, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, Campus B2 1, D-66123, Saarbruecken, Germany
| | - Uttam Dhawa
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Solange L de Castro
- Laboratory of Cell Biology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Rio de Janeiro, 21045-900, Brazil
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21
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Pallu J, Rabin C, Creste G, Branca M, Mavré F, Limoges B. Exponential Molecular Amplification by H
2
O
2
‐Mediated Autocatalytic Deprotection of Boronic Ester Probes to Redox Cyclers. Chemistry 2019; 25:7534-7546. [DOI: 10.1002/chem.201900627] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 02/23/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Justine Pallu
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Charlie Rabin
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Geordie Creste
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Mathieu Branca
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - François Mavré
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Benoît Limoges
- Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRSUniversité Paris Diderot, Sorbonne Paris Cité 15, rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
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Fowler P, Meurer K, Honarvar N, Kirkland D. A review of the genotoxic potential of 1,4-naphthoquinone. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2018; 834:6-17. [DOI: 10.1016/j.mrgentox.2018.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/27/2018] [Accepted: 07/31/2018] [Indexed: 12/13/2022]
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Ascorbate Attenuates Oxidative Stress and Increased Blood Pressure Induced by 2-(4-Hydroxyphenyl) Amino-1,4-naphthoquinone in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8989676. [PMID: 30147836 PMCID: PMC6083601 DOI: 10.1155/2018/8989676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/15/2018] [Accepted: 06/07/2018] [Indexed: 11/30/2022]
Abstract
Quinone derivatives like 2-(4-hydroxyphenyl) amino-1,4-naphthoquinone (Q7) are used as antitumor agents usually associated with adverse effects on the cardiovascular system. The objective of this study was to evaluate the cardioprotective effect of ascorbate on Q7-induced cardiovascular response in Wistar rats. In this study, blood pressure, vascular reactivity, and intracellular calcium fluxes were evaluated in cardiomyocytes and the rat aorta. We also measured oxidative stress through lipid peroxidation (TBARS), superoxide dismutase- (SOD-) like activity, and H2O2 generation. Oral treatment of rats with ascorbate (500 mg/kg) for 20 days significantly (p < 0.05) reduced the Q7-induced increase (10 mg/kg) in blood pressure and heart rate. The preincubation with ascorbate (2 mM) significantly (p < 0.05) attenuated the irregular beating of the atrium induced by Q7 (10−5 M). In addition, ascorbate induced endothelial vasodilation in the presence of Q7 in the intact aortic rings of a rat and reduced the cytosolic calcium levels in vascular smooth muscle cells. Ascorbate also reduced the Q7-induced oxidative stress in vivo. Ascorbate also attenuated Q7-induced SOD-like activity and increased TBARS levels. These results suggest a cardioprotective effect in vivo of ascorbate in animals treated orally with a naphthoquinone derivative by a mechanism involving oxidative stress.
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Yu H, Wei J, Cheng Y, Subedi K, Verma V. Synergistic and Antagonistic Interactions among the Particulate Matter Components in Generating Reactive Oxygen Species Based on the Dithiothreitol Assay. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:2261-2270. [PMID: 29351719 DOI: 10.1021/acs.est.7b04261] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We assessed the interactions among the particulate matter (PM) components in generating the reactive oxygen species (ROS) based on a dithiothreitol (DTT) assay. We started with the standard solutions of known redox-active substances, i.e., quinones (9,10-phenanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, and 5-hydroxy-1,4-naphthoquinone) and metals [Fe (II), Mn (II), and Cu (II)]. Both DTT consumption and hydroxyl radical (·OH) generation were measured in the DTT assay. The interactions of Fe were additive with quinones in DTT consumption but strongly synergistic in ·OH generation. Cu showed antagonistic interactions with quinones in both DTT consumption and ·OH generation. Mn interacted synergistically with quinones in DTT oxidation but antagonistically in ·OH generation. The nature of the interactions of these metals (Fe, Mn, and Cu) with ambient humic-like substances (HULIS) resembled that with quinones, although the intensity of interactions were weaker in DTT consumption than ·OH generation. Finally, we demonstrated that the DTT consumption capability of ambient PM can be well explained by HULIS, three transition metals (Fe, Mn, and Cu), and their interactions, but ·OH generation involves a contribution (∼50%) from additional compounds (aliphatic species or metals other than Fe, Mn, and Cu) present in the hydrophilic PM fraction. The study highlights the need to account for the interactions between organic compounds and metals, while apportioning the relative contributions of chemical components in the PM oxidative potential.
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Affiliation(s)
- Haoran Yu
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Jinlai Wei
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Yilan Cheng
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Kiran Subedi
- Department of Chemistry, University of Illinois at Urbana-Champaign , 505 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Vishal Verma
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
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Matsunaga T, Kamase K, Takasawa H, Yamaji Y, Endo S, El-Kabbani O, Ikari A. Facilitation of 9,10-phenanthrenequinone-elicited neuroblastoma cell apoptosis by NAD(P)H:quinone oxidoreductase 1. Chem Biol Interact 2018; 279:10-20. [DOI: 10.1016/j.cbi.2017.10.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/03/2017] [Accepted: 10/30/2017] [Indexed: 12/26/2022]
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26
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Qiu HY, Wang PF, Lin HY, Tang CY, Zhu HL, Yang YH. Naphthoquinones: A continuing source for discovery of therapeutic antineoplastic agents. Chem Biol Drug Des 2017; 91:681-690. [PMID: 29130595 DOI: 10.1111/cbdd.13141] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 10/10/2017] [Accepted: 11/01/2017] [Indexed: 12/13/2022]
Abstract
Naturally occurring naphthoquinones, usually in forms of botanical extracts, have been implicated with human life since ancient time, far earlier than their isolation and identification in modern era. The long use history of naphthoquinones has witnessed their functional shift from the original purposes as dyes and ornaments toward medicinal benefits. Hitherto, numerous studies have been carried out to elucidate the pharmacological profile of both natural and artificial naphthoquinones. A number of entities have been identified with promising therapeutic potential. Apart from the traditional effects of wound healing, anti-inflammatory, hemostatic, antifertility, insecticidal and antimicrobial, etc., the anticancer potential of naphthoquinones either in combination with other treatment approaches or on their own is being more and more realized. The molecular mechanisms of naphthoquinones in cells mainly fall into two categories as inducing oxidant stress by ROS (reactive oxygen species) generation and directly interacting with traditional therapeutic targets in a non-oxidant mechanism. Based on this knowledge, optimized agents with naphthoquinones scaffold have been acquired and further tested. Hereby, we summarize the explored biological mechanisms of naphthoquinones in cells and review the application perspective of promising naphthoquinones in cancer therapies.
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Affiliation(s)
- Han-Yue Qiu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Peng-Fei Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Hong-Yan Lin
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Cheng-Yi Tang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Yong-Hua Yang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing, China
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Xiong Q, Yu H, Wang R, Wei J, Verma V. Rethinking Dithiothreitol-Based Particulate Matter Oxidative Potential: Measuring Dithiothreitol Consumption versus Reactive Oxygen Species Generation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:6507-6514. [PMID: 28489384 DOI: 10.1021/acs.est.7b01272] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We measured the rate of generation of reactive oxygen species (ROS) [hydroxyl radicals (•OH) and hydrogen peroxide (H2O2)] catalyzed by ambient particulate matter (PM) in the dithiothreitol (DTT) assay. To understand the mechanism of ROS generation, we tested several redox-active substances, such as 9,10-phenanthrenequinone (PQ), 5-hydroxy-1,4-naphthoquinone (5H-1,4NQ), 1,2-naphthoquinone (1,2-NQ), 1,4-naphthoquinone (1,4-NQ), copper(II), manganese(II), and iron (II and III). Both pure compounds and their mixtures show different patterns in DTT oxidation versus ROS generation. The quinones, known to oxidize DTT in the efficiency order of PQ > 5H-1,4NQ > 1,2-NQ > 1,4-NQ, show a different efficiency order (5H-1,4NQ > 1,2-NQ ≈ PQ > 1,4-NQ) in the ROS generation. Cu(II), a dominant metal in DTT oxidation, contributes almost negligibly to the ROS generation. Fe is mostly inactive in DTT oxidation, but shows synergistic effect in •OH formation in the presence of other quinones (mixture/sum > 1.5). Ten ambient PM samples collected from an urban site were analyzed, and although DTT oxidation was significantly correlated with H2O2 generation (Pearson's r = 0.91), no correlation was observed between DTT oxidation and •OH formation. Our results show that measuring both DTT consumption and ROS generation in the DTT assay is important to incorporate the synergistic contribution from different aerosol components and to provide a more inclusive picture of the ROS activity of ambient PM.
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Affiliation(s)
- Qianshan Xiong
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Haoran Yu
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Runran Wang
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Jinlai Wei
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Vishal Verma
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign , 205 North Mathews Avenue, Urbana, Illinois 61801, United States
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Ni D, Zhang J, Wang X, Qin D, Li N, Lu W, Chen W. Hydroxyl Radical-Dominated Catalytic Oxidation in Neutral Condition by Axially Coordinated Iron Phthalocyanine on Mercapto-Functionalized Carbon Nanotubes. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04726] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Dongjing Ni
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jinfei Zhang
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiyi Wang
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Dandan Qin
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Nan Li
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wangyang Lu
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wenxing Chen
- National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
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Ensafi AA, Jamei HR, Heydari-Bafrooei E, Rezaei B. Electrochemical study of quinone redox cycling: A novel application of DNA-based biosensors for monitoring biochemical reactions. Bioelectrochemistry 2016; 111:15-22. [DOI: 10.1016/j.bioelechem.2016.04.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 01/09/2023]
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30
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Han Y, Zhu T, Guan T, Zhu Y, Liu J, Ji Y, Gao S, Wang F, Lu H, Huang W. Association between size-segregated particles in ambient air and acute respiratory inflammation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 565:412-419. [PMID: 27179679 DOI: 10.1016/j.scitotenv.2016.04.196] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 05/25/2023]
Abstract
The health effects of particulate matter (PM) in ambient air are well documented. However, whether PM size plays a critical role in these effects is unclear in the population studies. This study investigated the association between the ambient concentrations of PM with varies sizes (5.6-560nm) and a biomarker of acute respiratory inflammation, the fraction of exhaled nitric oxide (FENO), in a panel of 55 elderly people in Shanghai, China. Linear mixed-effect model was fitted to estimate the association between FENO and moving average concentrations of PM, adjusting for temperature, relative humidity, day of the week, and age. Results showed that among the measured particles size range, Aitken-mode (20-100nm) particles had the strongest positive association with increased FENO when using moving average concentration of PM up to 24h prior to visits. The estimates were robust to the adjustment for gender, condition of chronic disease and use of medication, and to the sensitive analysis using different times of visits. The authors concluded that the association between acute respiratory inflammation and PM concentration of fine particulates depended on particle size, and suggested Aitken-mode particles may be the most responsible for this adverse health association.
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Affiliation(s)
- Yiqun Han
- College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing 100871, China.
| | - Tong Zhu
- College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing 100871, China.
| | - Tianjia Guan
- College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing 100871, China
| | - Yi Zhu
- College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing 100871, China
| | - Jun Liu
- College of Environmental Sciences and Engineering and Centre for Environment and Health, Peking University, Beijing 100871, China
| | - Yunfang Ji
- The Center for Diseases Control and Prevention of Huangpu District, Shanghai, China
| | - Shuna Gao
- The Center for Diseases Control and Prevention of Huangpu District, Shanghai, China
| | - Fei Wang
- The Center for Diseases Control and Prevention of Huangpu District, Shanghai, China
| | - Huimin Lu
- The Center for Diseases Control and Prevention of Huangpu District, Shanghai, China
| | - Wei Huang
- College of Occupational & Environmental Health, School of Public Health, Center of Health Sciences, Peking University, China
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31
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Modulatory Effect of 2-(4-Hydroxyphenyl)amino-1,4-naphthoquinone on Endothelial Vasodilation in Rat Aorta. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:3939540. [PMID: 27672420 PMCID: PMC5031853 DOI: 10.1155/2016/3939540] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 08/09/2016] [Accepted: 08/22/2016] [Indexed: 12/03/2022]
Abstract
The vascular endothelium plays an essential role in the control of the blood flow. Pharmacological agents like quinone (menadione) at various doses modulate this process in a variety of ways. In this study, Q7, a 2-phenylamino-1,4-naphthoquinone derivative, significantly increased oxidative stress and induced vascular dysfunction at concentrations that were not cytotoxic to endothelial or vascular smooth muscle cells. Q7 reduced nitric oxide (NO) levels and endothelial vasodilation to acetylcholine in rat aorta. It also blunted the calcium release from intracellular stores by increasing the phenylephrine-induced vasoconstriction when CaCl2 was added to a calcium-free medium but did not affect the influx of calcium from extracellular space. Q7 increased the vasoconstriction to BaCl2 (10−3 M), an inward rectifying K+ channels blocker, and blocked the vasodilation to KCl (10−2 M) in aortic rings precontracted with BaCl2. This was recovered with sodium nitroprusside (10−8 M), a NO donor. In conclusion, Q7 induced vasoconstriction was through a modulation of cellular mechanisms involving calcium fluxes through K+ channels, and oxidative stress induced endothelium damage. These findings contribute to the characterization of new quinone derivatives with low cytotoxicity able to pharmacologically modulate vasodilation.
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Wang A, Teng Y, Hu X, Wu L, Huang Y, Luo Y, Christie P. Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation. JOURNAL OF HAZARDOUS MATERIALS 2016; 308:199-207. [PMID: 26835897 DOI: 10.1016/j.jhazmat.2016.01.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/13/2016] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
Diphenylarsinic acid (DPAA) is a major contaminant in environments polluted by chemical weapons and abandoned after World Wars I and II and poses high risks to biota but remediation methods for this contaminant are rare. Here, the photodegradtion of DPAA was studied under high-pressure Hg lamp irradiation. DPAA was degraded completely into inorganic arsenic species in 30 min under UV-C irradiation. The photodegradation of DPAA depended mainly on its direct photolysis through excited-state DPAA. By contrast, the generation of (1)O2 during the photodegradation of DPAA was confirmed by electron paramagnetic resonance (EPR) studies, but (1)O2 had little effect on the photodegradation of DPAA. Phtotodegradation of DPAA was also studied in soil leachates and groundwater and the photolytic rate of DPAA was controlled by the total organic carbon (TOC) content in soil leachates and by the NO3(-) concentration in groundwater. Finally, studies on the effects of common solutes on the photodegradation of DPAA show that Cl(-) can increase the photolytic rate of DPAA by prolonging the lifetime of excited-state DPAA. Moreover, NO3(-), NO2(-), and humic acid (HA) can decrease the photolytic rate of DPAA by suppressing the production of excited-state DPAA. This research shows the detailed mechanism of DPAA photodegradation and provides a new and effective method for DPAA decontamination.
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Affiliation(s)
- Anan Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xuefeng Hu
- Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yujuan Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Sauvain JJ, Rossi MJ. Quantitative Aspects of the Interfacial Catalytic Oxidation of Dithiothreitol by Dissolved Oxygen in the Presence of Carbon Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:996-1004. [PMID: 26683500 DOI: 10.1021/acs.est.5b04958] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The catalytic nature of particulate matter is often advocated to explain its ability to generate reactive oxygen species, but quantitative data are lacking. We have performed molecular characterization of three different carbonaceous nanoparticles (NP) by 1. identifying and quantifying their surface functional groups based on probe gas-particle titration; 2. studying the kinetics of dissolved oxygen consumption in the presence of suspended NP's and dithiothreitol (DTT). We show that these NP's can reversibly change their oxidation state between oxidized and reduced functional groups present on the NP surface. By comparing the amount of O2 consumed and the number of strongly reducing sites on the NP, its average turnover ranged from 35 to 600 depending on the type of NP. The observed quadratic rate law for O2 disappearance points to a Langmuir-Hinshelwood surface-based reaction mechanism possibly involving semiquinone radical. In the proposed model, the strongly reducing surface site is assumed to be a polycyclic aromatic hydroquinone whose oxidation to the corresponding conjugated quinone is rate-limiting in the catalytic chain reaction. The presence and strength of the reducing surface functional groups are important for explaining the catalytic activity of NP in the presence of oxygen and a reducing agent like DTT.
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Affiliation(s)
- Jean-Jacques Sauvain
- Institute for Work and Health (IST), University of Lausanne and Geneva , Route de la Corniche 2, CH-1066 Epalinges-Lausanne, Switzerland
| | - Michel J Rossi
- Paul Scherrer Institute (PSI), Laboratory of Atmospheric Chemistry (LAC) , CH-5232 Villigen PSI, Switzerland
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Zhang D, Shi W, Cheng Q, Li X, Xu A. Dioxygen-mediated oxidation of hydroquinone with cobalt ions in a bicarbonate aqueous solution for the production of active radicals. NEW J CHEM 2016. [DOI: 10.1039/c6nj00906a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cobalt(ii) ions exhibit high efficiency for hydroquinone oxidation in HCO3− solution with O2 to produce hydroxyl radicals.
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Affiliation(s)
- Dajie Zhang
- School of Environmental Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Wei Shi
- School of Environmental Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Qiang Cheng
- School of Environmental Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Xiaoxia Li
- School of Chemistry and Chemical Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Aihua Xu
- School of Environmental Engineering
- Wuhan Textile University
- Wuhan 430200
- China
- Engineering Research Center for Clean Production of Dyeing and Printing
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35
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Charrier JG, Anastasio C. Rates of Hydroxyl Radical Production from Transition Metals and Quinones in a Surrogate Lung Fluid. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:9317-25. [PMID: 26153923 PMCID: PMC4777526 DOI: 10.1021/acs.est.5b01606] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Hydroxyl radical ((•)OH) is the most reactive, and perhaps most detrimental to health, of the reactive oxygen species. (•)OH production in lungs following inhalation of particulate matter (PM) can result from redox-active chemicals, including iron and copper, but the relative importance of these species is unknown. This work investigates (•)OH production from iron, copper, and quinones, both individually and in mixtures at atmospherically relevant concentrations. Iron, copper, and three of the four quinones (1,2-naphthoquinone, phenanthrenequinone and 1,4-naphthoquinone) produce (•)OH. Mixtures of copper or quinones with iron synergistically produce (•)OH at a rate 20-130% higher than the sum of the rates of the individual redox-active species. We developed a regression equation from 20 mixtures to predict the rate of (•)OH production from the particle composition. For typical PM compositions, iron and copper account for most (•)OH production, whereas quinones are a minor source, although they can contribute if present at very high concentrations. This work shows that Cu contributes significantly to (•)OH production in ambient PM; other work has shown that Cu appears to be the primary driver of HOOH production and dithiothreitol (DTT) loss in ambient PM extracts. Taken together, these results indicate that copper appears to be the most important individual contributor to direct oxidant production from inhaled PM.
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Affiliation(s)
- Jessica G. Charrier
- Department of Land, Air and Water Resources, University of California – Davis
| | - Cort Anastasio
- Department of Land, Air and Water Resources, University of California – Davis
- Corresponding author, Dr. Cort Anastasio, University of California, Davis, 1 Shields Ave., Davis, CA 95616, Telephone (530) 754-6095, Fax: (530) 752-1552,
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36
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Natural low-molecular mass organic compounds with oxidase activity as organocatalysts. Proc Natl Acad Sci U S A 2014; 111:17152-7. [PMID: 25411318 DOI: 10.1073/pnas.1417941111] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Organocatalysts, low-molecular mass organic compounds composed of nonmetallic elements, are often used in organic synthesis, but there have been no reports of organocatalysts of biological origin that function in vivo. Here, we report that actinorhodin (ACT), a natural product derived from Streptomyces coelicolor A3(2), acts as a biocatalyst. We purified ACT and assayed its catalytic activity in the oxidation of L-ascorbic acid and L-cysteine as substrates by analytical methods for enzymes. Our findings were as follows: (i) oxidation reactions producing H2O2 proceeded upon addition of ACT to the reaction mixture; (ii) ACT was not consumed during the reactions; and (iii) a small amount (catalytic amount) of ACT consumed an excess amount of the substrates. Even at room temperature, atmospheric pressure, and neutral pH, ACT showed catalytic activity in aqueous solution, and ACT exhibited substrate specificity in the oxidation reactions. These findings reveal ACT to be an organocatalyst. ACT is known to show antibiotic activity, but its mechanism of action remains unknown. On the basis of our results, we propose that ACT kills bacteria by catalyzing the production of toxic levels of H2O2. We also screened various other natural products of bacterial, plant, and animal origins and found that several of the compounds exhibited catalytic activity, suggesting that living organisms produce and use these compounds as biocatalysts in nature.
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Liu L, Xu P, Zeng G, Huang D, Zhao M, Lai C, Chen M, Li N, Huang C, Wang C, Cheng M, He X, Lai M, He Y. Inherent antioxidant activity and high yield production of antioxidants in Phanerochaete chrysosporium. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.06.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chen W, Zhu T. Formation of nitroanthracene and anthraquinone from the heterogeneous reaction between NO2 and anthracene adsorbed on NaCl particles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:8671-8678. [PMID: 24950458 DOI: 10.1021/es501543g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Oxidative derivatives of polycyclic aromatic hydrocarbons (PAHs), that is, nitro-PAHs and quinones, are classed as hazardous semivolatile organic compounds but their formation mechanism from the heterogeneous reactions of PAHs adsorbed on atmospheric particles is not well understood. The heterogeneous reaction of NO2 with anthracene adsorbed on NaCl particles under different relative humidity (RH 0-60%) was investigated under dark conditions at 298 K. The formation of the major products, 9,10-anthraquinone (9,10-AQ) and 9-nitroanthracene (9-NANT), were determined to be second-order reactions with respect to NO2 concentration. The rate of formation of 9,10-AQ under low RH (0-20%) increased as the RH increased but decreased when the RH was further increased in high RH (40-60%). In contrast, the rate of formation of 9-NANT across the whole RH range (0-60%) decreased significantly with increasing RH. Two different reaction pathways are discussed for the formation of 9,10-AQ and 9-NANT, respectively, and both are considered to be coupled to the predominant reaction of NO2 with the NaCl substrate. These results suggest that relative humidity, which controls the amount of surface adsorbed water on NaCl particles, plays an important role in the heterogeneous reaction of NO2 with adsorbed PAHs.
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Affiliation(s)
- Wenyuan Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control; College of Environmental Sciences and Engineering, Peking University , Beijing 100871, China
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Shang Y, Zhang L, Jiang Y, Li Y, Lu P. Airborne quinones induce cytotoxicity and DNA damage in human lung epithelial A549 cells: the role of reactive oxygen species. CHEMOSPHERE 2014; 100:42-49. [PMID: 24480427 DOI: 10.1016/j.chemosphere.2013.12.079] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 12/13/2013] [Accepted: 12/20/2013] [Indexed: 06/03/2023]
Abstract
Ambient particulate matter (PM) is associated with adverse health effects. Quinones present in PM are hypothesized to contribute to these harmful effects through the generation of reactive oxygen species (ROS). However, whether the ROS induced by quinones is involved in mediating DNA damage as well as other biological responses in pulmonary cells is less well known. In this study, the toxic effects of five typical airborne quinones, including 1,2-naphthoquinone, 2-methylanthraquinone, 9,10-phenanthrenequinone, 2-methyl-1,4-naphthoquinone, and acenaphthenequinone, on cytotoxicity, DNA damage, intracellular calcium homeostasis, and ROS generation, were studied in human lung epithelial A549 cells. An antioxidant N-acetylcysteine (NAC) was used to examine the involvement of ROS in adverse biological responses induced by quinones. The quinones caused a concentration-dependent viability decrease, cellular LDH release, DNA damage, and ROS production in A549 cells. 1,2-Naphthoquinone, but not the other four quinones, increased intracellular calcium (Ca(2+)) levels in a dose-dependent manner. These toxic effects were abolished by administration of NAC, suggesting that ROS played a key role in the observed toxic effects of quinones in A549 cells. These results emphasize the importance of quinones in PM on the adverse health effects of PMs, which has been underestimated in the past few years, and highlight the need, when evaluating the effects on health and exposure management, to always consider their qualitative chemical compositions in addition to the size and concentration of PMs.
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Affiliation(s)
- Yu Shang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Ling Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yuting Jiang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yi Li
- Chinese Academy of Meteorological Sciences, Beijing 100081, China.
| | - Ping Lu
- Center for Spatial Information Science and Sustainable Development Applications, College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, China
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Munigunti R, Gathiaka S, Acevedo O, Sahu R, Tekwani B, Calderón AI. Characterization of PfTrxR inhibitors using antimalarial assays and in silico techniques. Chem Cent J 2013; 7:175. [PMID: 24209891 PMCID: PMC3828397 DOI: 10.1186/1752-153x-7-175] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/05/2013] [Indexed: 02/02/2023] Open
Abstract
Background The compounds 1,4-napthoquinone (1,4-NQ), bis-(2,4-dinitrophenyl)sulfide (2,4-DNPS), 4-nitrobenzothiadiazole (4-NBT), 3-dimethylaminopropiophenone (3-DAP) and menadione (MD) were tested for antimalarial activity against both chloroquine (CQ)-sensitive (D6) and chloroquine (CQ)-resistant (W2) strains of Plasmodium falciparum through an in vitro assay and also for analysis of non-covalent interactions with P. falciparum thioredoxin reductase (PfTrxR) through in silico docking studies. Results The inhibitors of PfTrxR namely, 1,4-NQ, 4-NBT and MD displayed significant antimalarial activity with IC50 values of < 20 μM and toxicity against 3T3 cell line. 2,4-DNPS was only moderately active. In silico docking analysis of these compounds with PfTrxR revealed that 2,4-DNPS, 4-NBT and MD interact non-covalently with the intersubunit region of the enzyme. Conclusions In this study, tools for the identification of PfTrxR inhibitors using phenotyphic screening and docking studies have been validated for their potential use for antimalarial drug discovery project.
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Affiliation(s)
| | | | | | | | | | - Angela I Calderón
- Department of Pharmacal Sciences, 4306 Walker Building, Auburn University, Auburn, AL, USA.
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Verma V, Rico-Martinez R, Kotra N, Rennolds C, Liu J, Snell TW, Weber RJ. Estimating the toxicity of ambient fine aerosols using freshwater rotifer Brachionus calyciflorus (Rotifera: Monogononta). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 182:379-384. [PMID: 23981648 DOI: 10.1016/j.envpol.2013.07.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 04/30/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
The toxicity of atmospheric fine particulate matter (PM2.5) in Atlanta is assessed using freshwater rotifers (Brachionus calyciflorus). The PM-laden quartz filters were extracted in both water and methanol. Aerosol extracts were passed through a C-18 column to separate the PM components into hydrophobic and hydrophilic fractions. Toxicity data reported in the units of LC50 (concentration that kills 50% of the test population in 24 h) shows that ambient particles are toxic to the rotifers with LC50 values ranging from 5 to 400 μg of PM. The methanol extract of the aerosols was substantially more toxic (8 ± 6 times) to the rotifers compared to the water extracts. A sizeable fraction (>70%) of toxicity was found to be associated with the hydrophobic fraction of PM. However, none of the bulk aerosol species was strongly correlated with the LC50 values suggesting a complicated mechanism of toxicity probably involving synergistic interactions of various PM components.
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Affiliation(s)
- Vishal Verma
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332, USA
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Shang Y, Zhu T, Lenz AG, Frankenberger B, Tian F, Chen C, Stoeger T. Reduced in vitro toxicity of fine particulate matter collected during the 2008 Summer Olympic Games in Beijing: the roles of chemical and biological components. Toxicol In Vitro 2013; 27:2084-93. [PMID: 23962744 DOI: 10.1016/j.tiv.2013.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/17/2013] [Accepted: 08/06/2013] [Indexed: 10/26/2022]
Abstract
Beijing has implemented systematic air pollution control legislation to reduce particulate emissions and improve air quality during the 2008 Summer Olympics, but whether the toxicity of fine fraction of particles (PM(2.5)) would be changed remains unclear. In present study we compared in vitro biological responses of PM(2.5) collected before and during the Olympics and tried to reveal possible correlations between its chemical components and toxicological mechanism(s). We measured cytotoxicity, cytokines/chemokines, and related gene expressions in murine alveolar macrophages, MH-S, after treated with 20 PM(2.5) samples. Significant, dose-dependent effects on cell viability, cytokine/chemokine release and mRNA expressions were observed. The cytotoxicity caused at equal mass concentration of PM(2.5) was notably reduced (p<0.05) by control measures, and significant association was found for viability and elemental zinc in PM(2.5). Endotoxin content in PM(2.5) correlated with all of the eight detected cytokines/chemokines; elemental and organic carbon correlated with four; arsenic and chromium correlated with six and three, respectively; iron and barium showed associations with two; nickel, magnesium, potassium, and calcium showed associations with one. PM(2.5) toxicity in Beijing was substantially dependent on its chemical components, and lowering the levels of specific components in PM(2.5) during the 2008 Olympics resulted in reduced biological responses.
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Affiliation(s)
- Yu Shang
- State Key Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Institute of Lung Biology and Disease, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany; Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
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Fang G, Gao J, Dionysiou DD, Liu C, Zhou D. Activation of persulfate by quinones: free radical reactions and implication for the degradation of PCBs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:4605-4611. [PMID: 23586773 DOI: 10.1021/es400262n] [Citation(s) in RCA: 334] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
There has been considerable interest in the use of persulfate for in situ chemical oxidation of organic contaminants in soils, sediments, and groundwater. Since humic acid (HA) exists ubiquitously in these environmental compartments, its redox active functional moieties, such as quinones, may play an important role in the oxidation processes of persulfate treatments. Understanding the effects of HA, especially the quinone functional groups on the degradation of pollutants by persulfate and the production of sulfate radicals (SO4(•-)) from persulfate, is beneficial for devising effective and economically feasible remediation strategies. In this study, the effects of model quinone compounds and HA on the degradation of 2,4,4'-trichlorobiphenyl (PCB28) by persulfate and the production of SO4(•-) from persulfate were investigated. It was found that quinones and HA can efficiently activate persulfate for the degradation of PCB28. The mechanism of persulfate activation was elucidated by quenching and electron paramagnetic resonance (EPR) studies. The results indicated that production of SO4(•-) from persulfate and quinones was semiquinone radical-dependent. The effects of quinone concentrations were also studied. The findings of this study elucidated a new pathway of persulfate activation, which could degrade environmental contaminants efficiently and provide useful information for the remediation of contaminated soil and water by persulfate.
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Affiliation(s)
- Guodong Fang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
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Sartori A, Mano CM, Mantovani MC, Dyszy FH, Massari J, Tokikawa R, Nascimento OR, Nantes IL, Bechara EJH. Ferricytochrome (c) directly oxidizes aminoacetone to methylglyoxal, a catabolite accumulated in carbonyl stress. PLoS One 2013; 8:e57790. [PMID: 23483930 PMCID: PMC3590289 DOI: 10.1371/journal.pone.0057790] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 01/25/2013] [Indexed: 11/19/2022] Open
Abstract
Age-related diseases are associated with increased production of reactive oxygen and carbonyl species such as methylglyoxal. Aminoacetone, a putative threonine catabolite, is reportedly known to undergo metal-catalyzed oxidation to methylglyoxal, NH4(+) ion, and H2O2 coupled with (i) permeabilization of rat liver mitochondria, and (ii) apoptosis of insulin-producing cells. Oxidation of aminoacetone to methylglyoxal is now shown to be accelerated by ferricytochrome c, a reaction initiated by one-electron reduction of ferricytochrome c by aminoacetone without amino acid modifications. The participation of O2(•-) and HO (•) radical intermediates is demonstrated by the inhibitory effect of added superoxide dismutase and Electron Paramagnetic Resonance spin-trapping experiments with 5,5'-dimethyl-1-pyrroline-N-oxide. We hypothesize that two consecutive one-electron transfers from aminoacetone (E0 values = -0.51 and -1.0 V) to ferricytochrome c (E0 = 0.26 V) may lead to aminoacetone enoyl radical and, subsequently, imine aminoacetone, whose hydrolysis yields methylglyoxal and NH4(+) ion. In the presence of oxygen, aminoacetone enoyl and O2(•-) radicals propagate aminoacetone oxidation to methylglyoxal and H2O2. These data endorse the hypothesis that aminoacetone, putatively accumulated in diabetes, may directly reduce ferricyt c yielding methylglyoxal and free radicals, thereby triggering redox imbalance and adverse mitochondrial responses.
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Affiliation(s)
- Adriano Sartori
- Departamento de Bioquímica, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Camila M. Mano
- Departamento de Bioquímica, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Mariana C. Mantovani
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - Fábio H. Dyszy
- Departamento de Física e Informática, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | - Júlio Massari
- Departamento de Bioquímica, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Rita Tokikawa
- Departamento de Bioquímica, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Otaciro R. Nascimento
- Departamento de Física e Informática, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | - Iseli L. Nantes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, São Paulo, Brazil
| | - Etelvino J. H. Bechara
- Departamento de Bioquímica, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
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Shang Y, Fan L, Feng J, Lv S, Wu M, Li B, Zang YS. Genotoxic and inflammatory effects of organic extracts from traffic-related particulate matter in human lung epithelial A549 cells: The role of quinones. Toxicol In Vitro 2013; 27:922-31. [DOI: 10.1016/j.tiv.2013.01.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 12/05/2012] [Accepted: 01/04/2013] [Indexed: 12/22/2022]
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Verma V, Rico-Martinez R, Kotra N, King L, Liu J, Snell TW, Weber RJ. Contribution of water-soluble and insoluble components and their hydrophobic/hydrophilic subfractions to the reactive oxygen species-generating potential of fine ambient aerosols. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:11384-92. [PMID: 22974103 DOI: 10.1021/es302484r] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Relative contributions of water- and methanol-soluble compounds and their hydrophobic/hydrophilic subfractions to the ROS (reactive oxygen species)-generating potential of ambient fine aerosols (D(p) < 2.5 μm) are assessed. ROS-generating (or oxidative) potential of the particulate matter (PM) was measured by the dithiothreitol (DTT) assay. Particles were collected on quartz filters (N = 8) at an urban site near central Atlanta during January-February 2012 using a PM(2.5) high-volume sampler. Filter punches were extracted separately in both water and methanol. Hydrophobic and hydrophilic fractions were then subsequently segregated via a C-18 solid phase extraction column. The DTT assay response was significantly higher for the methanol extract, and for both extracts a substantial fraction of PM oxidative potential was associated with the hydrophobic compounds as evident from a substantial attenuation in DTT response after passing PM extracts through the C-18 column (64% for water and 83% for methanol extract; both median values). The DTT activities of water and methanol extracts were correlated with the water-soluble (R = 0.86) and water-insoluble organic carbon (R = 0.94) contents of the PM, respectively. Brown carbon (BrC), which predominantly represents the hydrophobic organic fraction (referred to as humic-like substances, HULIS), was also correlated with DTT activity in both the water (R = 0.78) and methanol extracts (R = 0.83). Oxidative potential was not correlated with any metals measured in the extracts. These findings suggest that the hydrophobic components of both water-soluble and insoluble organic aerosols substantially contribute to the oxidative properties of ambient PM. Further investigation of these hydrophobic organic compounds could help identify sources of a significant fraction of ambient aerosol toxicity.
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Affiliation(s)
- Vishal Verma
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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Li Y, Zhu T, Zhao J, Xu B. Interactive enhancements of ascorbic acid and iron in hydroxyl radical generation in quinone redox cycling. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:10302-10309. [PMID: 22891791 DOI: 10.1021/es301834r] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Quinones are toxicological substances in inhalable particulate matter (PM). The mechanisms by which quinones cause hazardous effects can be complex. Quinones are highly active redox molecules that can go through a redox cycle with their semiquinone radicals, leading to formation of reactive oxygen species. Electron spin resonance spectra have been reported for semiquinone radicals in PM, indicating the importance of ascorbic acid and iron in quinone redox cycling. However, these findings are insufficient for understanding the toxicity associated with quinone exposure. Herein, we investigated the interactions among anthraquinone (AQ), ascorbic acid, and iron in hydroxyl radical (·OH) generation through the AQ redox cycling process in a physiological buffer. We measured ·OH concentration and analyzed the free radical process. Our results showed that AQ, ascorbic acid, and iron have synergistic effects on ·OH generation in quinone redox cycling; i.e., ascorbyl radical oxidized AQ to semiquinone radical and started the redox cycling, iron accelerated this oxidation and enhanced ·OH generation through Fenton reactions, while ascorbic acid and AQ could help iron to release from quartz surface and enhance its bioavailability. Our findings provide direct evidence for the redox cycling hypothesis about airborne particle surface quinone in lung fluid.
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Affiliation(s)
- Yi Li
- State Key Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, People's Republic of China
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