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Chang M, Chang B, Pan Y, Lin B, Lian Y, Lee M, Yeung S, Lin L, Jeng J. Antiplatelet, antioxidative, and anti‐inflammatory effects of hydroquinone. J Cell Physiol 2019; 234:18123-18130. [DOI: 10.1002/jcp.28444] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/05/2019] [Accepted: 02/14/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Mei‐Chi Chang
- Biomedical Science Team Chang Gung University of Science and Technology Taoyuan Taiwan
- Department of Dentistry Chang Gung Memorial Hospital Taipei Taiwan
| | - Bei‐En Chang
- Graduate Institute of Oral Biology National Taiwan University Medical College Taipei Taiwan
| | - Yu‐Hwa Pan
- Department of Dentistry Chang Gung Memorial Hospital Taipei Taiwan
| | - Bor‐Ru Lin
- Department of Diagnotherapeutics National Taiwan University Hospital Taipei Taiwan
| | - Yun‐Chia Lian
- Department of Dentistry Chang Gung Memorial Hospital Taipei Taiwan
| | - Ming‐Shu Lee
- School of Dentistry & Department of Dentistry National Taiwan University Medical College and National Taiwan University Hospital Taipei Taiwan
| | - Sin‐Yuet Yeung
- Department of Dentistry Chang Gung Memorial Hospital Taipei Taiwan
| | - Li‐Deh Lin
- School of Dentistry & Department of Dentistry National Taiwan University Medical College and National Taiwan University Hospital Taipei Taiwan
| | - Jiiang‐Huei Jeng
- School of Dentistry & Department of Dentistry National Taiwan University Medical College and National Taiwan University Hospital Taipei Taiwan
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Kupa LDVK, Drewes CC, Barioni ED, Neves CL, Sampaio SC, Farsky SHP. Role of Translocator 18 KDa Ligands in the Activation of Leukotriene B4 Activated G-Protein Coupled Receptor and Toll Like Receptor-4 Pathways in Neutrophils. Front Pharmacol 2017; 8:766. [PMID: 29163156 PMCID: PMC5664262 DOI: 10.3389/fphar.2017.00766] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 10/11/2017] [Indexed: 12/13/2022] Open
Abstract
TSPO (Translocator 18 KDa; tryptophan-rich sensory protein oxygen sensor) is a constitutive outer mitochondrial membrane protein overexpressed in inflammatory cells during local or systemic processes. Despite its expression is characterized, role of TSPO in inflammation remains elusive. For this study, we investigated the role of TSPO ligands on neutrophil functions elicited by two different inflammatory pathways. Peritoneal neutrophils were isolated from male Balb-C mice, treated with TSPO ligand diazepam, Ro5-4864 or PK11195 (1,100 or 1000 nM; 2 h) and further stimulated with lipopolysaccharide from Escherichia coli (LPS), a binding for Toll-Like Receptor-4 (TLR4), or leukotriene B4 (LTB4), a G-protein coupled receptor (GPCR) ligand. LPS treatment did not lead to overexpression of TSPO on neutrophils, and pre-treatment with any TSPO ligand did not alter cytokine expression, adhesion molecule expression, or the production of reactive oxygen and nitrogen species caused by LPS stimulation. Conversely, all TSPO ligands impaired LTB4’s actions, as visualized by reductions in L-selectin shedding, β2 integrin overexpression, neutrophil chemotaxis, and actin filament assembly. TSPO ligands showed distinct intracellular effects on LTB4-induced neutrophil locomotion, with diazepam enhancing cofilin but not modifying Arp2/3 expression, and Ro5-4864 and PK11195 reducing both cofilin and Arp2/3 expression. Taken together, our data exclude a direct role of TSPO ligands in TLR4-elicited pathways, and indicate that TSPO activation inhibits GPCR inflammatory pathways in neutrophils, with a relevant role in neutrophil influx into inflammatory sites.
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Affiliation(s)
- Léonard de Vinci Kanda Kupa
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Carine C Drewes
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Eric D Barioni
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Camila L Neves
- Laboratory of Pathophysiology, Institute Butantan, São Paulo, Brazil
| | | | - Sandra H P Farsky
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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Yu MH, Lee SO. Hydroquinone stimulates cell invasion through activator protein-1-dependent induction of MMP-9 in HepG2 human hepatoma cells. Food Chem Toxicol 2016; 89:120-5. [PMID: 26807887 DOI: 10.1016/j.fct.2016.01.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/05/2016] [Accepted: 01/21/2016] [Indexed: 02/06/2023]
Abstract
Hydroquinone (HQ) is a well-known environmental carcinogen and exposure of humans to HQ can also occur through plant foods, cosmetics, and tobacco products. Although liver is a major organ metabolizing HQ and susceptible to its toxicity, role of HQ in metastatic progression of human hepatocellular carcinoma (HCC) remains unclear. In this study, we examined the effect of HQ on the invasion of HCC cells and its underlying molecular mechanisms. HQ strongly induced matrix metalloproteinase-9 (MMP-9) expression and secretion in HepG2 human hepatoma cells, which were well correlated with increased cell invasion. Mechanistic studies further demonstrated that HQ induced transcriptional activity of MMP-9 gene by activating activator protein-1 (AP-1), the well-known key element mediating MMP-9 gene expression, via MAP kinase (MAPK) signaling pathways. These results suggest that HQ may promote metastatic progression of HCC, although data on in vivo hydroquinone exposure and risk for HCC are contradictory.
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Affiliation(s)
- Mi-Hee Yu
- Department of Food Science and Technology, Keimyung University, Daegu 42601, Republic of Korea
| | - Syng-Ook Lee
- Department of Food Science and Technology, Keimyung University, Daegu 42601, Republic of Korea; CK-1, Food and Biotechnology Expert Training Program, Keimyung University, Daegu 42601, Republic of Korea.
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Fu J, Shi Q, Song X, Xia X, Su C, Liu Z, Song E, Song Y. Tetrachlorobenzoquinone exhibits neurotoxicity by inducing inflammatory responses through ROS-mediated IKK/IκB/NF-κB signaling. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:241-250. [PMID: 26745386 DOI: 10.1016/j.etap.2015.12.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 06/05/2023]
Abstract
Tetrachlorobenzoquinone (TCBQ) is a joint metabolite of persistent organic pollutants (POPs), hexachlorobenzene (HCB) and pentachlorophenol (PCP). Previous studies have been reported that TCBQ contributes to acute hepatic damage due to its pro-oxidative nature. In the current study, TCBQ showed the highest capacity on the cytotoxicity, ROS formation and inflammatory cytokines release among four compounds, i.e., HCB, PCP, tetrachlorohydroquinone (TCHQ, reduced form of TCBQ) and TCBQ, in PC 12 cells. Further mechanistic study illustrated TCBQ activates nuclear factor-kappa B (NF-κB) signaling. The activation of NF-κB was identified by measuring the protein expressions of inhibitor of nuclear factor kappa-B kinase (IKK) α/β, p-IKKα/β, an inhibitor of NF-κB (IκB) α, p-IκBα, NF-κB (p65) and p-p65. The translocation of NF-κB was assessed by Western blotting of p65 in nuclear/cytosolic fractions, electrophoretic mobility shift assay (EMSA) and luciferase reporter gene assay. In addition, TCBQ significantly induced protein and mRNA expressions of inflammatory cytokines and mediators, such as interleukin-1 beta (IL-1β), IL-6, tumor necrosis factor-alpha (TNF-α), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) and the production of nitric oxide (NO) and prostaglandin E2 (PGE2). Pyrrolidine dithiocarbamate (PDTC), a specific NF-κB inhibitor inhibited these effects efficiently, further suggested TCBQ-induced inflammatory responses involve NF-κB signaling. Moreover, antioxidants, i.e., N-acetyl-l-cysteine (NAC), Vitamin E and curcumin, ameliorated TCBQ-induced ROS generation as well as the activation of NF-κB, which implied that ROS serve as the upstream molecule of NF-κB signaling. In summary, TCBQ exhibits a neurotoxic effect by inducing oxidative stress-mediated inflammatory responses via the activation of IKK/IκB/NF-κB pathway in PC12 cells.
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Affiliation(s)
- Juanli Fu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Qiong Shi
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Xiufang Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Xiaomin Xia
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Chuanyang Su
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Zixuan Liu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Erqun Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Yang Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, People's Republic of China.
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Tang HC, Chen YC. Identification of tyrosinase inhibitors from traditional Chinese medicines for the management of hyperpigmentation. SPRINGERPLUS 2015; 4:184. [PMID: 25932370 PMCID: PMC4411401 DOI: 10.1186/s40064-015-0956-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 04/01/2015] [Indexed: 11/23/2022]
Abstract
The inhibition of tyrosinase is the most effective method to decrease melanin synthesis during the process of pigmentation. We aimed to find compounds from traditional Chinese medicines (TCM) that are more effective than the most commonly used tyrosinase inhibitor, arbutin. First, we employed homology modeling to construct a tyrosinase-modeled structure, and structure-based virtual screening to screen from 61,000 TCM compounds. We also adopted the following quantitative structure-activity relationship (QSAR) models for ligand-based validation: support vector machine, multiple linear regression, and Bayesian network. Molecular dynamics (MD) simulation was used to confirm the stability of ligand binding. We found that merresectine C might more effectively bind and inhibit the activity of tyrosinase than arbutin. This study provides useful evidence for the potential development of a novel non-toxic bleaching or whitening ingredient.
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Affiliation(s)
- Hsin-Chieh Tang
- Department of Biomedical Informatics, Asia University, Taichung, 41354 Taiwan
| | - Yu-Chian Chen
- Department of Biomedical Informatics, Asia University, Taichung, 41354 Taiwan ; Human Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, 40402 Taiwan ; Research Center for Chinese Medicine &Acupuncture, China Medical University, Taichung, 40402 Taiwan
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Silva AMDOE, Machado ID, Santin JR, de Melo ILP, Pedrosa GV, Genovese MI, Farsky SHP, Mancini-Filho J. Aqueous Extract ofRosmarinus officinalisL. Inhibits Neutrophil Influx and Cytokine Secretion. Phytother Res 2014; 29:125-33. [DOI: 10.1002/ptr.5238] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 08/31/2014] [Accepted: 09/05/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Ana Mara de Oliveira e Silva
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 14 05508-900 São Paulo Brazil
| | - Isabel Daufenback Machado
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 13B 05508-900 São Paulo Brazil
| | - José Roberto Santin
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 13B 05508-900 São Paulo Brazil
| | - Illana Louise Pereira de Melo
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 14 05508-900 São Paulo Brazil
| | - Gabriela Vieira Pedrosa
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 14 05508-900 São Paulo Brazil
| | - Maria Ines Genovese
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 14 05508-900 São Paulo Brazil
| | - Sandra Helena Poliselli Farsky
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 13B 05508-900 São Paulo Brazil
| | - Jorge Mancini-Filho
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes, 580, Bl 14 05508-900 São Paulo Brazil
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Chen YJ, Chang LS. Hydroquinone-induced miR-122 down-regulation elicits ADAM17 up-regulation, leading to increased soluble TNF-α production in human leukemia cells with expressed Bcr/Abl. Biochem Pharmacol 2013; 86:620-31. [PMID: 23791922 DOI: 10.1016/j.bcp.2013.06.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 06/12/2013] [Accepted: 06/12/2013] [Indexed: 01/10/2023]
Abstract
Studies on HQ-treated human leukemia K562 (Bcr/Abl-positive) cells were conducted to address the hydroquinone (HQ) mechanism that promotes soluble TNF-α (sTNF-α) production. HQ post-translationally down-regulated cell surface TNF-α expression increases the release of sTNF-α into K562 cell culture medium. Meanwhile, HQ increased ADAM17 mRNA stability, leading to ADAM17 up-regulation in HQ-treated cells. Knock-down of ADAM17 abrogated HQ-induced sTNF-α secretion. HQ-evoked miR-122 down-regulation was proven to promote ADAM17 mRNA stability and up-regulate ADAM17 expression. HQ-induced p38 MAPK and JNK activation were responsible for suppression of miR-122 promoter luciferase activity and miR-122 expression. Activation of p38 MAPK and JNK elicited phosphorylation of c-Jun, ATF-2 and c-Fos, and knock-down of c-Jun, ATF-2 and c-Fos restored miR-122 expression in HQ-treated cells. Chromatin immunoprecipitating and DNA affinity purification assay revealed c-Jun, ATF-2 and c-Fos binding to the miR-122 gene promoter region. Moreover, HQ-induced sTNF-α production in Bcr/Abl-positive leukemia cell lines KU812 and MEG-01 was also connected with miR-122 down-regulation and ADAM17 up-regulation, while HQ was unable to affect miR-122 and ADAM-17 expression on Bcr/Abl-negative leukemia U937 cells. Taken together, our data indicate that HQ induces down-regulation of miR-122 expression, leading to ADAM17 up-regulation and ADAM17-mediated TNF-α shedding. Consequently, HQ treatment increases the production of sTNF-α in leukemia cells with expressed Bcr/Abl.
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Affiliation(s)
- Ying-Jung Chen
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
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Liu WH, Chou WM, Chang LS. p38 MAPK/PP2Acα/TTP pathway on the connection of TNF-α and caspases activation on hydroquinone-induced apoptosis. Carcinogenesis 2013; 34:818-27. [PMID: 23288922 DOI: 10.1093/carcin/bgs409] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
This study investigated tumor necrosis factor-α (TNF-α)-mediated death pathway contribution to hydroquinone (HQ) cytotoxicity in human leukemia U937 cells. HQ-induced apoptosis of human leukemia U937 cells was characterized by the increase in mitochondrial membrane depolarization, procaspase-8 degradation and tBid production. Downregulation of Fas-associated death domain protein (FADD) blocked HQ-induced procaspase-8 degradation and rescued the viability of HQ-treated cells, suggesting the involvement of a death receptor-mediated pathway in HQ-induced cell death. HQ induced increased TNF-α mRNA stability led to TNF-α protein expression upregulation, whereas HQ suppressed TNF-α-mediated NFκB pathway activation. HQ elicited protein phosphatase 2A catalytic subunit α (PP2Acα) upregulation via p38 mitogen-activated protein kinase (MAPK)-mediated CREB/c-Jun/ATF-2 phosphorylation, and PP2Acα upregulation was found to promote tristetraprolin (TTP) degradation. Suppression of p38 MAPK activation and protein phosphatase 2A (PP2A) activity abrogated TNF-α upregulation and procaspase degradation in HQ-treated cells. Overexpression of TTP suppressed HQ-induced TNF-α upregulation and restored the viability of HQ-treated cells. Moreover, TTP overexpression increased TNF-α mRNA decay in HQ-treated cells. Taken together, our data indicate that HQ elicits TNF-α upregulation via p38 MAPK/PP2A-mediated TTP downregulation, and suggest that the TNF-α-mediated death pathway is involved in HQ-induced U937 cell death. The same pathway was also proven to be involved in the HQ-induced death of human leukemia HL-60 and Jurkat cells.
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Affiliation(s)
- Wen-Hsin Liu
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
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Hebeda CB, Pinedo FJ, Bolonheis SM, Ferreira ZF, Muscará MN, Teixeira SA, Farsky SHP. Intracellular mechanisms of hydroquinone toxicity on endotoxin-activated neutrophils. Arch Toxicol 2012; 86:1773-81. [PMID: 22717997 DOI: 10.1007/s00204-012-0886-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 05/30/2012] [Indexed: 11/28/2022]
Abstract
Circulating neutrophils promptly react to different substances in the blood and orchestrate the beginning of the innate inflammatory response. We have shown that in vivo exposure to hydroquinone (HQ), the most oxidative compound of cigarette smoke and a toxic benzene metabolite, affects circulating neutrophils, making them unresponsive to a subsequent bacterial infection. In order to understand the action of toxic molecular mechanisms on neutrophil functions, in vitro HQ actions on pro-inflammatory mediator secretions evoked by Escherichia coli lipopolysaccharide (LPS) were investigated. Neutrophils from male Wistar rats were cultured with vehicle or HQ (5 or 10 μM; 2 h) and subsequently incubated with LPS (5 μg/ml; 18 h). Hydroquinone treatment impaired LPS-induced nitric oxide (NO), tumour necrosis factor α (TNF-α), interleukin (IL)-1β and IL-6 secretions by neutrophils. The toxic effect was not dependent on cell death, reduced expression of the LPS receptor or toll-like receptor-4 (TLR-4) or cell priming, as HQ did not induce reactive oxygen species generation or β(2)integrin membrane expression. The action of toxic mechanisms on cytokine secretion was dependent on reduced gene synthesis, which may be due to decreased nuclear factor κB (NF-κB) nuclear translocation. Conversely, this intracellular pathway was not involved in impaired NO production because HQ treatments only affected inducible nitric oxide synthase protein expression and activity, suggesting posttranscriptional and/or posttranslational mechanisms of action. Altogether, our data show that HQ alters the action of different LPS-activated pathways on neutrophils, which may contribute to the impaired triggering of the host innate immune reaction detected during in vivo HQ exposure.
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Affiliation(s)
- Cristina Bichels Hebeda
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Sao Paulo, SP, Brazil
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