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Zhang P, Chen W, Ma YC, Bai B, Sun G, Zhang S, Chang X, Wang Y, Jiang N, Zhang X, Ma S. Design and Synthesis of 4-Fluorophenyl-5-methylene-2(5 H)-furanone Derivatives as Potent Quorum Sensing Inhibitors. J Med Chem 2023. [PMID: 37310919 DOI: 10.1021/acs.jmedchem.2c01866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Quorum sensing inhibitors (QSIs) are a class of compounds that can reduce the pathogenicity of bacteria without affecting bacterial growth. In this study, we designed and synthesized four series of 4-fluorophenyl-5-methylene-2(5H)-furanone derivatives and evaluated their QSI activities. Among them, compound 23e not only showed excellent inhibitory activity against various virulence factors but also significantly enhanced the inhibitory activity of antibiotics ciprofloxacin and clarithromycin against two strains of Pseudomonas aeruginosa in vitro. What is even more exciting is that it remarkably increased the antibacterial effect in vivo in combination with ciprofloxacin in the bacteremia model infected with P. aeruginosa PAO1. Moreover, 23e had little hemolytic activity to mouse erythrocytes. Further, the results of GFP reporter fluorescence strain inhibition and β-galactosidase activity inhibition experiments demonstrated that 23e simultaneously targeted the three quorum sensing systems in P. aeruginosa. As a result, compound 23e could be used as an effective QSI for further development against bacterial infections.
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Affiliation(s)
- Panpan Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Weijin Chen
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Yang-Chun Ma
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Bingfang Bai
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Guanglin Sun
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Shenyan Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Xiaohong Chang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Yingmei Wang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Nan Jiang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Xianghui Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Shutao Ma
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan 250012, China
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Comparison of Accelerated and Standard Corneal Collagen Cross-Linking Treatments in Experimental Fungal Keratitis for Aspergillus fumigatus. J Ophthalmol 2022; 2022:1085692. [PMID: 35909462 PMCID: PMC9329025 DOI: 10.1155/2022/1085692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/22/2022] [Accepted: 07/06/2022] [Indexed: 11/17/2022] Open
Abstract
Introduction. To compare accelerated and standard corneal collagen cross-linking (CXL) treatments in experimental Aspergillus keratitis models. Methods. Twenty-six New Zealand rabbits were divided into two groups: a 1% voriconazole combined with standard CXL group, and a 1% voriconazole combined with accelerated CXL group. The ulcer area, corneal opacity, and corneal neovascularization score were measured via slit-lamp imaging, and the corneal and corneal epithelial thickness and ulcer depth were measured via anterior segment optical coherence tomography (AS-OCT). The duration of the hyphae was observed via in vivo confocal microscopy (IVCM), and the cornea was taken for pathological examination after modeling and at the end of the study to determine the hyphae and corneal repair. The observation times were as follows: at successful modeling (day 0) and at 1, 4, 7, 14, 21, and 28 days after the intervention. Results. The area and depth of the ulcer decreased in both groups after CXL (all
). Interestingly, the ulcer area in the accelerated CXL group still tended to increase on the first day after CXL although the difference was not statistically significant (
). On the 21st and 28th days after CXL, the ulcer area and depth of the standard CXL group were larger and deeper than those of the accelerated CXL group (all
). The ulcer healing time in the accelerated CXL group was 18.67 ± 6.21 days, while that in the standard CXL group was 23.55 ± 4.72 days, and the difference was statistically significant (
). Conclusions. Both accelerated and standard CXL can significantly inhibit the progression of Aspergillus keratitis corneal ulcers and promote ulcer healing. The accelerated CXL was superior to the standard CXL, which could control infection faster and promote ulcer healing. However, it is important to note that there may be a risk of early deterioration of the ulcer with accelerated CXL.
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Sethupathy S, Sathiyamoorthi E, Kim YG, Lee JH, Lee J. Antibiofilm and Antivirulence Properties of Indoles Against Serratia marcescens. Front Microbiol 2020; 11:584812. [PMID: 33193228 PMCID: PMC7662412 DOI: 10.3389/fmicb.2020.584812] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/30/2020] [Indexed: 12/11/2022] Open
Abstract
Indole and its derivatives have been shown to interfere with the quorum sensing (QS) systems of a wide range of bacterial pathogens. While indole has been previously shown to inhibit QS in Serratia marcescens, the effects of various indole derivatives on QS, biofilm formation, and virulence of S. marcescens remain unexplored. Hence, in the present study, we investigated the effects of 51 indole derivatives on S. marcescens biofilm formation, QS, and virulence factor production. The results obtained revealed that several indole derivatives (3-indoleacetonitrile, 5-fluoroindole, 6-fluoroindole, 7-fluoroindole, 7-methylindole, 7-nitroindole, 5-iodoindole, 5-fluoro-2-methylindole, 2-methylindole-3-carboxaldehyde, and 5-methylindole) dose-dependently interfered with quorum sensing (QS) and suppressed prodigiosin production, biofilm formation, swimming motility, and swarming motility. Further assays showed 6-fluoroindole and 7-methylindole suppressed fimbria-mediated yeast agglutination, extracellular polymeric substance production, and secretions of virulence factors (e.g., proteases and lipases). QS assays on Chromobacterium violaceum CV026 confirmed that indole derivatives interfered with QS. The current results demonstrate the antibiofilm and antivirulence properties of indole derivatives and their potentials in applications targeting S. marcescens virulence.
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Affiliation(s)
| | | | - Yong-Guy Kim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
| | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
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Glotz G, Lebl R, Dallinger D, Kappe CO. Integration of Bromine and Cyanogen Bromide Generators for the Continuous-Flow Synthesis of Cyclic Guanidines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708533] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gabriel Glotz
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - René Lebl
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Doris Dallinger
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
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Glotz G, Lebl R, Dallinger D, Kappe CO. Integration of Bromine and Cyanogen Bromide Generators for the Continuous-Flow Synthesis of Cyclic Guanidines. Angew Chem Int Ed Engl 2017; 56:13786-13789. [DOI: 10.1002/anie.201708533] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Gabriel Glotz
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - René Lebl
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Doris Dallinger
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
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Maiti K, Syal K, Chatterji D, Jayaraman N. Synthetic Arabinomannan Heptasaccharide Glycolipids Inhibit Biofilm Growth and Augment Isoniazid Effects in Mycobacterium smegmatis. Chembiochem 2017; 18:1959-1970. [PMID: 28771901 DOI: 10.1002/cbic.201700247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Indexed: 02/04/2023]
Abstract
Biofilm formation, involving attachment to an adherent surface, is a critical survival strategy of mycobacterial colonies in hostile environmental conditions. Here we report the synthesis of heptasaccharide glycolipids based on mannopyranoside units anchored on to a branched arabinofuranoside core. Two types of glycolipids-2,3-branched and 2,5-branched-were synthesized and evaluated for their efficacies in inhibiting biofilm growth by the non-pathogenic mycobacterium variant Mycobacterium smegmatis. Biofilm formation was inhibited at a minimum biofilm growth inhibition concentration (MBIC) of 100 μg mL-1 in the case of the 2,5-branched heptasaccharide glycolipid. Further, we were able to ascertain that a combination of the drug isoniazid with the branched heptasaccharide glycolipid (50 μg mL-1 ) potentiates the drug, making it three times more effective, with an improved MBIC of 30 μg mL-1 . These studies establish that synthetic glycolipids not only act as inhibitors of biofilm growth, but also provide a synergistic effect when combined with significantly lowered concentrations of isoniazid to disrupt the biofilm structures of the mycobacteria.
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Affiliation(s)
- Krishnagopal Maiti
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Kirtimaan Syal
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560 012, India
| | - Dipankar Chatterji
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560 012, India
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Amara N, Gregor R, Rayo J, Dandela R, Daniel E, Liubin N, Willems HME, Ben-Zvi A, Krom BP, Meijler MM. Fine-Tuning Covalent Inhibition of Bacterial Quorum Sensing. Chembiochem 2016; 17:825-35. [PMID: 26840534 DOI: 10.1002/cbic.201500676] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 01/04/2023]
Abstract
Emerging antibiotic resistance among human pathogens has galvanized efforts to find alternative routes to combat bacterial virulence. One new approach entails interfering with the ability of bacteria to coordinate population-wide gene expression, or quorum sensing (QS), thus inhibiting the production of virulence factors and biofilm formation. We have recently developed such a strategy by targeting LasR, the master regulator of QS in the opportunistic human pathogen Pseudomonas aeruginosa, through the rational design of covalent inhibitors closely based on the core structure of the native ligand. We now report several groups of new inhibitors, one of which, fluoro-substituted ITC-12, displayed complete covalent modification of LasR, as well as effective QS inhibition in vitro and promising in vivo results. In addition to their potential clinical relevance, this series of synthetic QS modulators can be used as a tool to further unravel the complicated QS regulation in P. aeruginosa.
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Affiliation(s)
- Neri Amara
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Rachel Gregor
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Josep Rayo
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Rambabu Dandela
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Erik Daniel
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Nina Liubin
- Department of Life Sciences and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beersheva, Israel
| | - H Marjo E Willems
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, Free University Amsterdam and the University of Amsterdam, Amsterdam, The Netherlands
| | - Anat Ben-Zvi
- Department of Life Sciences and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beersheva, Israel
| | - Bastiaan P Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, Free University Amsterdam and the University of Amsterdam, Amsterdam, The Netherlands
| | - Michael M Meijler
- Department of Chemistry and, The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er Sheva, Israel.
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Singh N, Shetye GS, Zheng H, Sun J, Luk YY. Chemical Signals of Synthetic Disaccharide Derivatives Dominate Rhamnolipids at Controlling Multiple Bacterial Activities. Chembiochem 2015; 17:102-11. [DOI: 10.1002/cbic.201500396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Nischal Singh
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Gauri S. Shetye
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Hewen Zheng
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Jiayue Sun
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Yan-Yeung Luk
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
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Shetye GS, Singh N, Jia C, Nguyen CDK, Wang G, Luk YY. Specific Maltose Derivatives Modulate the Swarming Motility of Nonswarming Mutant and Inhibit Bacterial Adhesion and Biofilm Formation byPseudomonas aeruginosa. Chembiochem 2014; 15:1514-23. [DOI: 10.1002/cbic.201402093] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Indexed: 11/10/2022]
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Qian G, Liu B, Tan Q, Zhang S, Xu B. Hypervalent Iodine(III) Promoted Direct Synthesis of Imidazo[1,2-a]pyrimidines. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402456] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Moore JD, Gerdt JP, Eibergen NR, Blackwell HE. Active efflux influences the potency of quorum sensing inhibitors in Pseudomonas aeruginosa. Chembiochem 2014; 15:435-42. [PMID: 24478193 DOI: 10.1002/cbic.201300701] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Indexed: 12/15/2022]
Abstract
Many bacteria regulate gene expression through a cell-cell signaling process called quorum sensing (QS). In proteobacteria, QS is largely mediated by signaling molecules known as N-acylated L-homoserine lactones (AHLs) and their associated intracellular LuxR-type receptors. The design of non-native small molecules capable of inhibiting LuxR-type receptors (and thereby QS) in proteobacteria is an active area of research, and numerous lead compounds are AHL derivatives that mimic native AHL molecules. Much of this previous work has focused on the pathogen Pseudomonas aeruginosa, which controls an arsenal of virulence factors and biofilm formation through QS. The MexAB-OprM efflux pump has been shown to play a role in the secretion of the major AHL signal in P. aeruginosa, N-(3-oxododecanoyl) L-homoserine lactone. In the current study, we show that a variety of non-native AHLs and related derivatives capable of inhibiting LuxR-type receptors in P. aeruginosa display significantly higher potency in a P. aeruginosa Δ(mexAB-oprM) mutant, suggesting that MexAB-OprM also recognizes these compounds as substrates. We also demonstrate that the potency of 5,6-dimethyl-2-aminobenzimidazole, recently shown to be a QS and biofilm inhibitor in P. aeruginosa, is not affected by the presence/absence of the MexAB-OprM pump. These results have implications for the use of non-native AHLs and related derivatives as QS modulators in P. aeruginosa and other bacteria, and provide a potential design strategy for the development of new QS modulators that are resistant to active efflux.
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Affiliation(s)
- Joseph D Moore
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706 (USA)
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Lu C, Maurer CK, Kirsch B, Steinbach A, Hartmann RW. Overcoming the Unexpected Functional Inversion of a PqsR Antagonist inPseudomonas aeruginosa: An In Vivo Potent Antivirulence Agent TargetingpqsQuorum Sensing. Angew Chem Int Ed Engl 2013; 53:1109-12. [DOI: 10.1002/anie.201307547] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 10/10/2013] [Indexed: 12/13/2022]
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Lu C, Maurer CK, Kirsch B, Steinbach A, Hartmann RW. Overcoming the Unexpected Functional Inversion of a PqsR Antagonist inPseudomonas aeruginosa: An In Vivo Potent Antivirulence Agent TargetingpqsQuorum Sensing. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307547] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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