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Ronga L, Varcamonti M, Tesauro D. Structure-Activity Relationships in NHC-Silver Complexes as Antimicrobial Agents. Molecules 2023; 28:molecules28114435. [PMID: 37298911 DOI: 10.3390/molecules28114435] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Silver has a long history of antimicrobial activity and received an increasing interest in last decades owing to the rise in antimicrobial resistance. The major drawback is the limited duration of its antimicrobial activity. The broad-spectrum silver containing antimicrobial agents are well represented by N-heterocyclic carbenes (NHCs) silver complexes. Due to their stability, this class of complexes can release the active Ag+ cations in prolonged time. Moreover, the properties of NHC can be tuned introducing alkyl moieties on N-heterocycle to provide a range of versatile structures with different stability and lipophilicity. This review presents designed Ag complexes and their biological activity against Gram-positive, Gram-negative bacteria and fungal strains. In particular, the structure-activity relationships underlining the major requirements to increase the capability to induce microorganism death are highlighted here. Moreover, some examples of encapsulation of silver-NHC complexes in polymer-based supramolecular aggregates are reported. The targeted delivery of silver complexes to the infected sites will be the most promising goal for the future.
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Affiliation(s)
- Luisa Ronga
- Institut des Sciences Analytiques et de Physico-Chimie Pour l'Environnement et les Matériaux, Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, 64053 Pau, France
| | - Mario Varcamonti
- Department of Biology, University of Naples "Federico II", Via Cynthia, 80143 Naples, Italy
| | - Diego Tesauro
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Montesano, 49, 80131 Naples, Italy
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2
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Luo M, Zhang JC, Yin H, Wang CM, Xie L, Li KP, Goto M, Morris-Natschke SL, Lee KH, Zhang JH, Zhang YM, Zhang XR. Palladium (II), platinum (II) and silver (I) complexes with oxazolines: Their synthesis, characterization, DFT calculation, molecular docking and antitumour effects. J Inorg Biochem 2023; 239:112048. [PMID: 36496289 DOI: 10.1016/j.jinorgbio.2022.112048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
Six new Pd(II), Pt(II) and Ag(I) complexes, (1);{Pd (L1)]2C6H4}2Cl4} (2); Pt(L2)(DMSO)Cl; 3; {PtL5]2C6H4}2·PhCOO-⋅11NO3-; 4; {[Pt(L4)]2C6H4}; the binuclear cyclometalated complex the polymer chain (5); {[PtL5]C6H4}·NO3-}; and the polymeric silver species (6); Zn(L6)2·AgNO3·CHCl3 were synthesized and thoroughly characterized using X-ray diffraction and spectroscopic techniques (L1=(S,S)-1,4-i-PrOx]2C6H4}2Cl4, L2=Di(2,2-bis(4R-isopropyl-4,5-dihydro-oxazol-2-yl)acetonitrile) zinc (II) (BR1);L3= 1,4-bis(4R-benzyl-4,5-dihydro-oxazol-2-yl)benzene (AR2); L4= 1,4-bis(4R-benzyl-4,5-dihydro-oxazol-2-yl)benzene,L5=1,4-bis(4R-benzyl-4,5-dihydro-oxazol-2-yl)-benzene,L6=Di(2,2-bis(4S-isopropyl-4,5-dihydrooxazol-2-yl)acetonitrile) zinc (II). Complexes 1-6 showed cytotoxic effects against human tumour cell lines, including a multidrug-resistant subline. Oxazoline and Pd complex 1 induced apoptosis in A549 cells. DFT calculations were also performed to exhibit the excellent bioactivity of complex 1 against A549, MDA-MB-231, and KB cells. Complex 1, with the best docking score and a stable interaction network within the binding site of the G-quadruplex, could stably interact with the G-quadruplex. Additionally, complex 1 was further used in the animal experiment of human lung adenocarcinoma cells in nude mice. By comparing with the model control group, the tumour volume, relative tumour volume and relative tumour proliferation rate T/C decreased significantly in the cisplatin group and compound 1 (complex 1) group.
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Affiliation(s)
- Mei Luo
- College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China; Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA; Intelligent Manufacturing Institute of HFUT, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Jing-Cheng Zhang
- College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
| | - Hao Yin
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, China
| | - Cheng-Ming Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, China
| | - Lan Xie
- Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
| | - Kang-Po Li
- Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
| | - Masuo Goto
- Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA; Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 40447, Taiwan.
| | - Jia-Hai Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, PR China
| | - Yan-Min Zhang
- Laboratory of Molecular Design and Drug Discovery, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Xue-Ru Zhang
- College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
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3
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Türker D, Üstün E, Günal S, Yıldız H, D Düşünceli S, Özdemir İ. Cyanopropyl functionalized benzimidazolium salts and their silver N-heterocyclic carbene complexes: Synthesis, antimicrobial activity, and theoretical analysis. Arch Pharm (Weinheim) 2022; 355:e2200041. [PMID: 35352839 DOI: 10.1002/ardp.202200041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 11/08/2022]
Abstract
The reaction of N-substituted benzimidazole with 4-bromobutyronitrile gives the corresponding benzimidazolium salts as N-heterocyclic carbene (NHC) precursors. Silver(I) carbene complexes are synthesized by the reaction of the corresponding benzimidazolium salts with Ag2 O in dichloromethane. These new NHC precursors and Ag-NHC complexes were characterized by spectroscopy techniques and also screened for their antibacterial activities against the standard bacterial strains Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, and Enterococcus faecalis, and the standard fungal strains Candida albicans and Candida glabrata, and promising results were achieved. The compounds were also analyzed by density functional theory (DFT)/time-dependent DFT and docking methods.
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Affiliation(s)
- Dilek Türker
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey
| | - Elvan Üstün
- Inorganic Chemistry, Department of Chemistry, Faculty of Science and Art, Ordu University, Ordu, Turkey
| | - Selami Günal
- Pharmaceutical Chemistry, Department of Microbiology, Faculty of Medicine, İnonu University, Malatya, Turkey
| | - Hatice Yıldız
- Pharmaceutical Chemistry, Department of Microbiology, Faculty of Medicine, İnonu University, Malatya, Turkey
| | - Serpil D Düşünceli
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey.,Inorganic Chemistry, Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey.,Drug Application and Research Center, İnönü University, Malatya, Turkey
| | - İsmail Özdemir
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey.,Inorganic Chemistry, Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey.,Drug Application and Research Center, İnönü University, Malatya, Turkey
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4
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N-heterocyclic carbene-metal complexes as bio-organometallic antimicrobial and anticancer drugs, an update (2015–2020). Future Med Chem 2020; 12:2239-2275. [DOI: 10.4155/fmc-2020-0175] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
N-heterocyclic carbenes (NHCs) are organic compounds that typically mimic the chemical properties of phosphines. NHCs have made a significant impact on the field of coordination and organometallic chemistry because they are easy to prepare and handle and because of their versatility and stability. Importantly, the physicochemical properties of NHCs can be easily fine-tuned by simple variation of substituents on the nitrogen atoms. Over the past few years, various NHC–metal complexes have been extensively used as metal-based drug candidates and catalysts (homogeneous or heterogeneous) for various applications. To help assist future work with these compounds, this review provides a thorough review on the latest information involving some biomedical applications of NHC–metal complexes. Specifically, this article focuses on recent advances in the design, synthesis, characterization and biomedical applications (e.g., antimicrobial and anticancer activity) of various NHC–metal complexes (metal: silver, gold, palladium, rhodium, ruthenium, iridium and platinum) covering work published from 2015 to 2020. It is hoped that the promising discoveries to date will help accelerate studies on the encouraging potential of NHC–metal complexes as a class of effective therapeutic agents.
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Türker F, Noma SAA, Aktaş A, Al-Khafaji K, Taşkın Tok T, Ateş B, Gök Y. The (NHC)PdBr2(2-aminopyridine) complexes: synthesis, characterization, molecular docking study, and inhibitor effects on the human serum carbonic anhydrase and serum bovine xanthine oxidase. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02687-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Mansour W, Suleiman R, Fettouhi M, El Ali B. Soft Heteroleptic N-Heterocyclic Carbene Palladium(II) Species for Efficient Catalytic Routes to Alkynones via Carbonylative Sonogashira Coupling. ACS OMEGA 2020; 5:23687-23702. [PMID: 32984688 PMCID: PMC7513372 DOI: 10.1021/acsomega.0c02413] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/04/2020] [Indexed: 05/14/2023]
Abstract
N,N'-Substituted di-isopropyl (NHC-1), benzyl-isopropyl (NHC-2), and adamantyl-isopropyl (NHC-3) benzimidazolium salts react with palladium(II) bromide in pyridine to afford the corresponding trans-dibromidopyridinepalladium(II) complexes Pd-C1, Pd-C2, and Pd-C3 in high yields. A distorted square planar geometry for Pd-C2 and Pd-C3 was confirmed by single-crystal X-ray diffraction. The palladium(II) complexes show a remarkably higher catalytic activity and selectivity, compared to the literature data, in carbonylative Sonogashira coupling reactions of aryl iodides and aryl diiodides with aryl alkynes, alkyl alkynes, and dialkynes. Excellent yields with as low as 0.03 mol % loading of the catalyst were obtained. In the series of benzimidazolium (NHC) precursors, the 1H NMR signals of the α hydrogen show a consistent probing of the N-substituent donor strength. The density functional theory (DFT) quantum mechanical descriptors of the frontier orbitals were calculated. A linear correlation of the calculated absolute softness of the complexes versus the calculated percent buried volume (%V bur) of their corresponding ligands was obtained. The catalytic activity experimental data are consistent with the hard soft acid base (HSAB)-predicted high affinity of the softest Pd-C3 complex for soft substrates, such as aryl iodides.
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Affiliation(s)
- Waseem Mansour
- Chemistry
Department, King Fahd University of Petroleum
& Minerals, Dhahran 31261, Saudi Arabia
| | - Rami Suleiman
- Center
of Research Excellence in Corrosion, King
Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Mohammed Fettouhi
- Chemistry
Department, King Fahd University of Petroleum
& Minerals, Dhahran 31261, Saudi Arabia
| | - Bassam El Ali
- Chemistry
Department, King Fahd University of Petroleum
& Minerals, Dhahran 31261, Saudi Arabia
- . Tel: +966 13 860 4491. Fax: +966 13 860 4277
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Sharhan O, Heidelberg T, Hashim NM, Al-Madhagi WM, Ali HM. Benzimidazolium-acridine-based silver N-heterocyclic carbene complexes as potential anti-bacterial and anti-cancer drug. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119462] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Habib A, Iqbal MA, Bhatti HN, Kamal A, Kamal S. Synthesis of alkyl/aryl linked binuclear silver(I)-N-Heterocyclic carbene complexes and evaluation of their antimicrobial, hemolytic and thrombolytic potential. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2019.107670] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Choo KB, Mah WL, Lee SM, Lee WL, Cheow YL. Palladium complexes of bidentate pyridineN-heterocyclic carbenes: Optical resolution, antimicrobial and cytotoxicity studies. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4377] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kar Bee Choo
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Wee Li Mah
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Sui Mae Lee
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Wai Leng Lee
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Yuen Lin Cheow
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
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Selvarajoo PD, Haque RA, Haziz UF, Avicor SW, Wajidi MF, Razali MR. Dinuclear silver(I)- N -heterocyclic carbene complexes: Synthesis, characterization and larvicidal activity of bis-imidazolium dinuclear silver(I)- N -heterocyclic carbene complexes. J Inorg Biochem 2017; 175:232-238. [DOI: 10.1016/j.jinorgbio.2017.07.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/20/2017] [Accepted: 07/26/2017] [Indexed: 10/19/2022]
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11
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Han YJ, Wang L, Li QB, Xue LW. Synthesis, crystal structure, and antimicrobial activity of silver(I) complexes derived from 3-nitrobenzoic acid and diamines. RUSS J COORD CHEM+ 2017. [DOI: 10.1134/s1070328417070041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Fatima T, Haque RA, Razali MR, Ahmad A, Asif M, Khadeer Ahamed MB, Abdul Majid AMS. Effect of lipophilicity of wingtip groups on the anticancer potential of mono N-heterocyclic carbene silver(I) complexes: Synthesis, crystal structures and in vitro
anticancer study. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3735] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Tabinda Fatima
- School of Chemical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Rosenani A. Haque
- School of Chemical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Mohd R. Razali
- School of Chemical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Ashfaq Ahmad
- School of Pharmaceutical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Muhammad Asif
- EMAN Research and Testing Laboratory; School of Pharmacy; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Mohamed B. Khadeer Ahamed
- EMAN Biodiscoveries Sdn. Bhd; Suite 126, Level 1, EUREKA Complex; Universiti Sains Malaysia (USM); Minden 11800 Penang Malaysia
| | - A. M. S. Abdul Majid
- EMAN Research and Testing Laboratory; School of Pharmacy; Universiti Sains Malaysia; 11800 USM Penang Malaysia
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Subramanya Prasad TV, Shahini CR, Patil SA, Huang X, Bugarin A, Patil SA. Non-symmetrically p-nitrobenzyl- and p-cyanobenzyl-substituted N-heterocyclic carbene-silver(I) complexes: synthesis, characterization and antibacterial studies. J COORD CHEM 2017. [DOI: 10.1080/00958972.2016.1276574] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - C. R. Shahini
- Centre for Nano and Material Sciences, Jain University, Bangalore, India
| | - Shivaputra A. Patil
- Pharmaceutical Sciences Department, College of Pharmacy, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Xiaojun Huang
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, USA
| | - Alejandro Bugarin
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, USA
| | - Siddappa A. Patil
- Centre for Nano and Material Sciences, Jain University, Bangalore, India
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Haziz UF, Haque RA, Amirul A, Shaheeda N, Razali MR. Synthesis, structures and antibacterial studies of non-functionalized and nitrile-functionalized bis-benzimidazolium salts and respective dinuclear silver(I)-N-heterocyclic carbene complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Haque RA, Haziz UFM, Amirul AA, Shaheeda N, Razali MR. Synthesis of a palladium(II) complex of a N-heterocylic carbene via transmetalation: crystal structure and antibacterial studies. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0078-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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