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Doveri L, Diaz Fernandez YA, Dacarro G. Nanomaterials for Photothermal Antimicrobial Surfaces. ACS OMEGA 2024; 9:25575-25590. [PMID: 38911752 PMCID: PMC11190936 DOI: 10.1021/acsomega.4c01449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/25/2024]
Abstract
Microbial infection diseases are a major threat to human health and have become one of the main causes of mortality. The search for novel antimicrobial strategies is an important challenge for the scientific community, considering also the constant increase of antimicrobial resistance and the rise of new diseases. Among the new strategies to combat microbial infections, the photothermal effect seems to be one of the most promising. Hyperthermia is an effective and broad spectrum strategy for the removal of microbial infections. Among all of the strategies to reduce the diffusion of microbial infections, the preparation of antimicrobial surfaces seems of primary importance. In many cases, in fact, an infection can be diffused through surfaces just by touching them, or by inoculating microbes through an internalizable device, such as an implant, a prosthesis, or a catheter. In this review, we will summarize the recent advances in the preparation of photothermal antibacterial surfaces.
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Affiliation(s)
- Lavinia Doveri
- Department
of Chemistry, University of Pavia, Via Taramelli 12, I-27100 Pavia, Italy
| | | | - Giacomo Dacarro
- Department
of Chemistry, University of Pavia, Via Taramelli 12, I-27100 Pavia, Italy
- Centre
for Health Technologies (CHT), University
of Pavia, I-27100 Pavia, Italy
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2
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Chen X, Ran X, Wei X, Zhu L, Chen S, Liao Z, Xu K, Xia W. Bioactive glass 1393 promotes angiogenesis and accelerates wound healing through ROS/P53/MMP9 signaling pathway. Regen Ther 2024; 26:132-144. [PMID: 38872979 PMCID: PMC11169082 DOI: 10.1016/j.reth.2024.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/20/2024] [Accepted: 05/26/2024] [Indexed: 06/15/2024] Open
Abstract
Compared to bioactive glass 45S5, bioactive glass 1393 has shown greater potential in activating tissue cells and promoting angiogenesis for bone repair. Nevertheless, the effect of bioactive glass 1393 in the context of wound healing remains extensively unexplored, and its mechanism in wound healing remains unclear. Considering that angiogenesis is a critical stage in wound healing, we hypothesize that bioactive glass 1393 may facilitate wound healing through the stimulation of angiogenesis. To validate this hypothesis and further explore the mechanisms underlying its pro-angiogenic effects, we investigated the impact of bioactive glass 1393 on wound healing angiogenesis through both in vivo and in vitro studies. The research demonstrated that bioactive glass 1393 accelerated wound healing by promoting the formation of granulation, deposition of collagen, and angiogenesis. The results of Western blot analysis and immunofluorescence staining revealed that bioactive glass 1393 up-regulated the expression of angiogenesis-related factors. Additionally, bioactive glass 1393 inhibited the expression of ROS and P53 to promote angiogenesis. Furthermore, bioactive glass 1393 stimulated angiogenesis through the P53 signaling pathway, as evidenced by P53 activation assays. Collectively, these findings indicate that bioactive glass 1393 accelerates wound healing by promoting angiogenesis via the ROS/P53/MMP9 signaling pathway.
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Affiliation(s)
- Xuenan Chen
- National Key Clinical Specialty(Wound Healing), Burn and Wound Healing Center, The First Affliated Hospital of Wenzhou Medical University, Wenzhou, China
- College of Life and Environmental Sciences, Wenzhou University, Zhejiang, China
| | - Xinyu Ran
- National Key Clinical Specialty(Wound Healing), Burn and Wound Healing Center, The First Affliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xuebo Wei
- National Key Clinical Specialty(Wound Healing), Burn and Wound Healing Center, The First Affliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lifei Zhu
- School of Pharmaceutical Sciences, Cixi Biomedical Research Institute, Wenzhou Medical University, Zhejiang, China
| | - Shaodong Chen
- Department of Orthopaedics, Lishui People's Hospital, Zhejiang, China
| | - Zhiyong Liao
- College of Life and Environmental Sciences, Wenzhou University, Zhejiang, China
| | - Ke Xu
- National Key Clinical Specialty(Wound Healing), Burn and Wound Healing Center, The First Affliated Hospital of Wenzhou Medical University, Wenzhou, China
- College of Life and Environmental Sciences, Wenzhou University, Zhejiang, China
| | - Weidong Xia
- National Key Clinical Specialty(Wound Healing), Burn and Wound Healing Center, The First Affliated Hospital of Wenzhou Medical University, Wenzhou, China
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3
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Li J, Yu L, Wang R, Lan J, Li M, Qiao Y, Tao Z, Lü H, Wang F, Fang Q, Guo P. The role of silver nanoparticles alone and combined with imipenem on carbapenem-resistant Klebsiella pneumoniae. J Appl Microbiol 2024; 135:lxae077. [PMID: 38544327 DOI: 10.1093/jambio/lxae077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 03/11/2024] [Accepted: 03/26/2024] [Indexed: 05/07/2024]
Abstract
AIMS Carbapenem-resistant Klebsiella pneumoniae (CRKP) infections poses a significant threat to human health, necessitating urgent development of new antimicrobial agents. Silver nanoparticles (AgNPs), which are among the most widely used engineered nanomaterials, have been extensively studied. However, the impact of AgNPs on CRKP and the potential for drug resistance development remain inadequately explored. METHODS AND RESULTS In this study, broth dilution method was used to determine the minimum inhibitory concentration (MIC) was determined using the broth dilution method. Results indicated MIC values of 93.1 ± 193.3 µg ml-1 for AgNPs, 2.3 ± 5.1 µg ml-1 for AgNO3, and 25.1 ± 48.3 µg ml-1 for imipenem (IMI). The combined inhibitory effect of AgNPs and IMI on CRKP was assessed using the checkerboard method. Moreover, after 6-20 generations of continuous culture, the MIC value of AgNPs increased 2-fold. Compared to IMI, resistance of Kl. pneumoniae to AgNPs developed more slowly, with a higher fold increase in MIC observed after 20 generations. Whole-genome sequencing revealed four nonsynonymous single nucleotide polymorphism mutations in CRKP after 20 generations of AgNP treatment. CONCLUSION We have demonstrated that AgNPs significantly inhibit CRKP isolates and enhance the antibacterial activity of imipenem against Kl. pneumoniae. Although the development of AgNP resistance is gradual, continued efforts are necessary for monitoring and studying the mechanisms of AgNP resistance.
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Affiliation(s)
- Jiangyan Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Bengbu Medical University, Changhuai Road 287, Bengbu, Anhui Province 233030, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Changhuai Road 287, Bengbu, Anhui Province 233030, China
| | - Lian Yu
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Ruirui Wang
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Jiaqi Lan
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Ming Li
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Yan Qiao
- Department of Clinical Laboratory, The First Affiliated Hospital of Bengbu Medical University, Changhuai Road 287, Bengbu, Anhui Province 233030, China
| | - Zhaoyu Tao
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Hezuo Lü
- Department of Clinical Laboratory, The First Affiliated Hospital of Bengbu Medical University, Changhuai Road 287, Bengbu, Anhui Province 233030, China
| | - Fengchao Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Bengbu Medical University, Changhuai Road 287, Bengbu, Anhui Province 233030, China
| | - Qiang Fang
- Bengbu Medical University, Donghaidadao 2600, Bengbu, Anhui Province 233030, China
| | - Pu Guo
- Department of Clinical Laboratory, The First Affiliated Hospital of Bengbu Medical University, Changhuai Road 287, Bengbu, Anhui Province 233030, China
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4
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Karaky N, Tang S, Ramalingam P, Kirby A, McBain AJ, Banks CE, Whitehead KA. Multidrug-Resistant Escherichia coli Remains Susceptible to Metal Ions and Graphene-Based Compounds. Antibiotics (Basel) 2024; 13:381. [PMID: 38786110 PMCID: PMC11117355 DOI: 10.3390/antibiotics13050381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 05/25/2024] Open
Abstract
Escherichia coli is listed as a priority 1 pathogen on the World Health Organization (WHO) priority pathogen list. For this list of pathogens, new antibiotics are urgently needed to control the emergence and spread of multidrug-resistant strains. This study assessed eighteen metal ions, graphene, and graphene oxide for their antimicrobial efficacy against E. coli in both planktonic and biofilm growth states and the potential synergy between metal ions and graphene-based compounds. Molybdenum and tin ions exhibited the greatest antimicrobial activity against the planktonic states of the isolates with minimal inhibitory concentrations (MIC) ranging between 13 mg/L and 15.6 mg/L. Graphene oxide had no antimicrobial effect against any of the isolates, while graphene showed a moderate effect against E. coli (MIC, 62.5 mg/L). Combinations of metal ions and graphene-based compounds including tin-graphene, tin-graphene oxide, gold-graphene, platinum-graphene, and platinum-graphene oxide exhibited a synergistic antimicrobial effect (FIC ≤ 0.5), inhibiting the planktonic and biofilm formation of the isolates regardless of their antibiotic-resistant profiles. The bactericidal effect of the metal ions and the synergistic effects when combined with graphene/graphene oxide against medically relevant pathogens demonstrated that the antimicrobial efficacy was increased. Hence, such agents may potentially be used in the production of novel antimicrobial/antiseptic agents.
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Affiliation(s)
- Nathalie Karaky
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK;
| | - Shiying Tang
- Microbiology at Interfaces Group, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK;
| | - Parameshwari Ramalingam
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (P.R.); (C.E.B.)
- Department of Physics, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Tiruchirappalli Campus, Tiruchirappalli 620024, India
| | - Andrew Kirby
- Faculty of Medicine and Health, University of Leeds, Leeds LS2 9JT, UK;
| | - Andrew J. McBain
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PT, UK;
| | - Craig E. Banks
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (P.R.); (C.E.B.)
| | - Kathryn A. Whitehead
- Microbiology at Interfaces Group, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK;
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5
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Wu D, Wang J, Yin X, Tan R, Zhang T. Grafting of Poly(ionic liquid) Brushes through Fe 0-Mediated Surface-Initiated Atom Transfer Radical Polymerization for Marine Antifouling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8393-8399. [PMID: 38442040 DOI: 10.1021/acs.langmuir.3c03852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Surface-tethered poly(ionic liquid) brushes have attracted considerable attention in widespread fields, from bioengineering to marine antifouling. However, their applications have been constrained due to the poor polymerization efficiency and sophisticated operation process. In this work, we efficiently synthesized the poly(ionic liquid) brushes with unparalleled speed (up to 98 nm h-1) through Fe0-mediated surface-initiated atom transfer radical polymerization (Fe0 SI-ATRP) while consuming only microliter of monomer solution under ambient conditions. We also demonstrated that poly(ionic liquid) brushes with gradient thickness and wettability were easily accessible by regulating the distance between the opposite plates of Fe0 SI-ATRP. Moreover, the resultant poly(ionic liquid) brushes presented excellent antibacterial activities against Escherichia coli (99.2%) and Bacillus subtilis (88.1%) after 24 h and low attachment for proteins and marine algae (≤5%) for over 2 weeks. This research provided pathways to the facile and controllable fabrication of poly(ionic liquid) materials for marine antifouling applications.
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Affiliation(s)
- Daheng Wu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jianing Wang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiaodong Yin
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Runxiang Tan
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Mignon A, Gheysens T, Walraet S, Tack P, Rigole P, Coenye T, Vincze L, Van Vlierberghe S, Dubruel P. Effect of Poly(Vinyl Pyrrolidone) on Iodine Release from Acrylate-Endcapped Urethane-Based Poly(Ethylene Glycol) Hydrogels as Antibacterial Wound Dressing. Macromol Biosci 2024; 24:e2300202. [PMID: 37913549 DOI: 10.1002/mabi.202300202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 09/11/2023] [Indexed: 11/03/2023]
Abstract
Infections are still a major cause of morbidity in burn wounds. Although silver has been used strongly in past centuries as an anti-bacterial, it can lead to allergic reactions, bacterial resistance, and delayed wound healing. Iodine-based antibacterials are becoming an interesting alternative. In this work, the effect of complexation with poly(vinyl pyrrolidone) (PVP) and poly(ethylene oxide) (PEO)-based polymers is explored by using different acrylate-endcapped urethane-based poly(ethylene glycol) (AUP) polymers, varying the molar mass (MM) of the poly(ethylene glycol) (PEG) backbone, with possible addition of PVP. The higher MM AUP outperforms the swelling potential of commercial wound dressings such as Kaltostat, Aquacel Ag, and Hydrosorb and all MM show superior mechanical properties. The addition of iodine to the polymers is compared to Iso-Betadine Tulle (IBT). Interestingly, the addition of PVP does not lead to increased iodine complexation compared to the blank AUP polymers, while all have a prolonged iodine release compared to the IBT, which leads to a burst release. The observed prolonged release also leads to larger inhibition zones during antibacterial tests. Complexing iodine in AUP polymers with or without PVP leads to antimicrobial wound dressings which may hold potential for future application to treat infected wounds.
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Affiliation(s)
- Arn Mignon
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Gent, Ghent, Belgium
- Smart Polymeric Biomaterials, Biomaterials and Tissue Engineering, Campus Group T, KU, Leuven, Andreas Vesaliusstraat 13, 3000, Leuven, Belgium
| | - Tom Gheysens
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Gent, Ghent, Belgium
| | - Sander Walraet
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Gent, Ghent, Belgium
| | - Pieter Tack
- Department of Chemistry, Ghent University, Krijgslaan 281, S12, 9000, Gent, Belgium
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Ghent University, Ottergemsesteenweg 460, Gent, 9000, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Ottergemsesteenweg 460, Gent, 9000, Belgium
| | - Laszlo Vincze
- Department of Chemistry, Ghent University, Krijgslaan 281, S12, 9000, Gent, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Gent, Ghent, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Gent, Ghent, Belgium
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7
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Vital VG, Silva MR, Santos VT, Lobo FG, Xander P, Zauli RC, Moraes CB, Freitas-Junior LH, Barbosa CG, Pellosi DS, Silva RAG, Paganotti A, Vasconcellos SP. Micro-Addition of Silver to Copper: One Small Step in Composition, a Change for a Giant Leap in Biocidal Activity. MATERIALS (BASEL, SWITZERLAND) 2024; 17:917. [PMID: 38399167 PMCID: PMC10890504 DOI: 10.3390/ma17040917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/01/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The use of copper as an antimicrobial agent has a long history and has gained renewed interest in the context of the COVID-19 pandemic. In this study, the authors investigated the antimicrobial properties of an alloy composed of copper with a small percentage of silver (Cu-0.03% wt.Ag). The alloy was tested against various pathogens, including Escherichia coli, Staphylococcus aureus, Candida albicans, Pseudomonas aeruginosa, and the H1N1 virus, using contact exposure tests. Results showed that the alloy was capable of inactivating these pathogens in two hours or less, indicating its strong antimicrobial activity. Electrochemical measurements were also performed, revealing that the small addition of silver to copper promoted a higher resistance to corrosion and shifted the formation of copper ions to higher potentials. This shift led to a slow but continuous release of Cu2+ ions, which have high biocidal activity. These findings show that the addition of small amounts of silver to copper can enhance its biocidal properties and improve its effectiveness as an antimicrobial material.
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Affiliation(s)
- Vitor G. Vital
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
| | - Márcio R. Silva
- Department of Research and Development, Termomecanica São Paulo S.A., São Bernardo do Campo 09612-000, Brazil
| | - Vinicius T. Santos
- Department of Research and Development, Termomecanica São Paulo S.A., São Bernardo do Campo 09612-000, Brazil
| | - Flávia G. Lobo
- Department of Research and Development, Termomecanica São Paulo S.A., São Bernardo do Campo 09612-000, Brazil
| | - Patrícia Xander
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
| | - Rogéria C. Zauli
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
| | - Carolina B. Moraes
- Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo 05508-000, Brazil
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-900, Brazil
| | - Lucio H. Freitas-Junior
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-900, Brazil
| | - Cecíla G. Barbosa
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-900, Brazil
| | - Diogo S. Pellosi
- Instituto de Química, Universidade Federal do Paraná, Curitiba 81531-980, Brazil
| | - Ricardo A. G. Silva
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
| | - André Paganotti
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
| | - Suzan P. Vasconcellos
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas—ICAQF, Universidade Federal de São Paulo—UNIFESP, Diadema 09913-030, Brazil (P.X.); (R.C.Z.)
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8
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Jin X, Xie D, Zhang Z, Liu A, Wang M, Dai J, Wang X, Deng H, Liang Y, Zhao Y, Wen P, Li Y. In vitro and in vivo studies on biodegradable Zn porous scaffolds with a drug-loaded coating for the treatment of infected bone defect. Mater Today Bio 2024; 24:100885. [PMID: 38169782 PMCID: PMC10758886 DOI: 10.1016/j.mtbio.2023.100885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/17/2023] [Accepted: 11/27/2023] [Indexed: 01/05/2024] Open
Abstract
Additively manufactured biodegradable zinc (Zn) scaffolds have great potential to repair infected bone defects due to their osteogenic and antibacterial properties. However, the enhancement of antibacterial properties depends on a high concentration of dissolved Zn2+, which in return deteriorates osteogenic activity. In this study, a vancomycin (Van)-loaded polydopamine (PDA) coating was prepared on pure Zn porous scaffolds to solve the above dilemma. Compared with pure Zn scaffolds according to comprehensive in vitro tests, the PDA coating resulted in a slow degradation and inhibited the excessive release of Zn2+ at the early stage, thus improving cytocompatibility and osteogenic activity. Meanwhile, the addition of Van drug substantially suppressed the attachment and proliferation of S. aureus and E. coli bacterial. Furthermore, in vivo implantation confirmed the simultaneously improved osteogenic and antibacterial functions by using the pure Zn scaffolds with Van-loaded PDA coating. Therefore, it is promising to employ biodegradable Zn porous scaffolds with the proposed drug-loaded coating for the treatment of infected bone defects.
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Affiliation(s)
- Xiang Jin
- Postgraduate Training Base, Jinzhou Medical University and The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 10048, China
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Dongxu Xie
- State Key Laboratory of Tribology in Advanced Equipment, Beijing, 100084, China
- Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Zhenbao Zhang
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Aobo Liu
- State Key Laboratory of Tribology in Advanced Equipment, Beijing, 100084, China
- Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Menglin Wang
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Jiabao Dai
- State Key Laboratory of Tribology in Advanced Equipment, Beijing, 100084, China
- Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Xuan Wang
- Postgraduate Training Base, Jinzhou Medical University and The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 10048, China
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Huanze Deng
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Yijie Liang
- Postgraduate Training Base, Jinzhou Medical University and The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 10048, China
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
| | - Yantao Zhao
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
- Senior Department of Orthopedics, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
- Beijing Engineering Research Center of Orthopedics Implants, Beijing, 100048, China
| | - Peng Wen
- State Key Laboratory of Tribology in Advanced Equipment, Beijing, 100084, China
- Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Yanfeng Li
- Postgraduate Training Base, Jinzhou Medical University and The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 10048, China
- Department of Stomatology, The Fourth Medical Centre, PLA General Hospital, Beijing, 100048, China
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9
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Sarkar D, Manna M, Adhikary A, Reja S, Ghosh S, Saha T, Bhandari S, Kumar Das R. Nanometal surface energy transfer (NSET) from biologically active heterocyclic ligands to silver nanoparticles induces enhanced antimicrobial activity against gram-positive bacteria. Colloids Surf B Biointerfaces 2024; 234:113733. [PMID: 38219637 DOI: 10.1016/j.colsurfb.2023.113733] [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] [Received: 11/07/2023] [Revised: 12/16/2023] [Accepted: 12/26/2023] [Indexed: 01/16/2024]
Abstract
Herein we report the formation of a nanometal surface energy transfer (NSET) pair between a donor biologically active heterocyclic luminescent ligand such as 3-(1,3-Dioxoisoindolin-2-yl)-N, N-dimethylpropan-1-ammonium perchlorate (S4PNL; λem-408 nm) and an acceptor silver nanoparticle (Ag NP; λabs-406 nm). When the S4PNL ligand interacts with Ag NPs, the quenching in their luminescence intensity at 408 nm is noticed, with a Stern-Volmer constant of 0.8 × 104 M-1. The present donor-acceptor pair displays a binding constant of 2.8 × 104 M-1 and binding sites of 1.12. The current work shows the energy transfer from a molecular dipole (S4PNL) to a nanometal surface (Ag NP) and thus follows the nanometal surface energy transfer (NSET) ruler with an energy transfer efficiency of 80.0%, 50% energy transfer efficiency distance (d0) of 4.9 nm, donor-acceptor distance of 3.4 nm. The alteration in the zeta potential value of S4PNL upon interaction with AgNP clearly demonstrates the strong electrostatic interaction between donor and acceptor. Importantly, the current NSET pair shows enhanced antimicrobial activity against gram-positive bacteria such as Bacillus cereus (B. cereus) in comparison to their parent components i.e. S4PNL ligand and Ag NP. The NSET pair shows maximum inhibition against B. cereus (9202.21 ± 463.26 CFU/ml.) at 10% while minimum inhibition is observed at 0.01% of it (39,887.19 ± 242.67 CFU/ml.).
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Affiliation(s)
- Dilip Sarkar
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Mihir Manna
- Centre for Nano Technology, Indian Institute of Technology, Guwahati, Assam, India
| | - Amisha Adhikary
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Sahin Reja
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Supriyo Ghosh
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Tilak Saha
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Satyapriya Bhandari
- Department of Chemistry, Kandi Raj College (Govt. Aided), Affiliated to University of Kalyani, Kandi, Murshidabad, India.
| | - Rajesh Kumar Das
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India.
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10
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Watson F, Chen R, Percival SL. In vitro prevention and inactivation of biofilms using controlled-release iodine foam dressings for wound healing. Int Wound J 2024; 21:e14365. [PMID: 37715349 PMCID: PMC10788590 DOI: 10.1111/iwj.14365] [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] [Received: 06/20/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 09/17/2023] Open
Abstract
Microbial biofilms are a major hindrance in the wound healing process, prolonging the inflammatory response phase, thus making them a target in treatment. The aim of this study is to assess the antibacterial properties of commercially available wound dressings, of various material composition and antibacterial agents, towards multiple in vitro microbial and biofilm models. A variety of in vitro microbial and biofilm models were utilised to evaluate the ability of wound dressing materials to sequester microbes, prevent dissemination and manage bioburden. Sequestering and dissemination models were used to evaluate the ability of wound dressing materials to prevent the biofilm-forming bacterium, Pseudomonas aeruginosa, from migrating through dressing materials over a 24-72 h challenge period. Additionally, Centre for Disease Control (CDC) Bioreactor and Drip Flow models were used to evaluate antibacterial killing efficacy towards established P. aeruginosa and Staphylococcus aureus biofilms using more challenging, wound-like models. Controlled-release iodine foam and silver-impregnated carboxymethylcellulose (CMC) wound dressing materials demonstrated potent biofilm management properties in comparison to a methylene blue and gentian violet-containing foam dressing. Both the iodine-containing foam and silver-impregnated CMC materials effectively prevented viable P. aeruginosa dissemination for up to 72 h. In addition, the controlled-release iodine foam and silver-impregnated CMC materials reduced P. aeruginosa bioburden in the Drip Flow model. The controlled-release iodine foam demonstrated superiority in the CDC Bioreactor model, as both the silver- and iodine-containing materials reduced S. aureus to the limit of detection, but P. aeruginosa growth was only completely reduced by controlled-release iodine foam dressing materials. The data generated within the in vitro biofilm models supports the clinical data available in the public domain for the implementation of iodine foam dressings for effective biofilm management and control in wound care.
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Affiliation(s)
- Fergus Watson
- Centre of Excellence for Biofilm Science (CEBS)5D Health Protection Group Ltd.LiverpoolUK
| | - Rui Chen
- Centre of Excellence for Biofilm Science (CEBS)5D Health Protection Group Ltd.LiverpoolUK
| | - Steven L. Percival
- Centre of Excellence for Biofilm Science (CEBS)5D Health Protection Group Ltd.LiverpoolUK
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11
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Peng M, Chuan JL, Zhao GP, Fu Q. Construction of silver-coated high translucent zirconia implanting abutment material and its property of antibacterial. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2023; 51:441-452. [PMID: 37594201 DOI: 10.1080/21691401.2023.2244013] [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: 03/17/2023] [Revised: 07/13/2023] [Accepted: 07/29/2023] [Indexed: 08/19/2023]
Abstract
High translucent zirconia (HTZ) has excellent mechanical properties, biocompatibility, and good semi-translucency making it an ideal material for aesthetic anterior dental implant abutments without antibacterial properties. In the oral environment, the surface of the abutment material is susceptible to microbial adhesion and biofilm formation, which can lead to infection or peri-implantitis and even implant failure. This study aims to promote the formation of a biological seal at the implant-soft tissue interface by modifying the HTZ surface, using the load-bearing capacity of the aluminosilicate porous structure and the broad-spectrum antibacterial effect of silver nanoparticles to prevent peri-implant bacterial infection and inflammation and to improve the success rate and prolong the use of the implant. FE-SEM (field emission scanning electron microscopes), EDS (energy dispersive spectroscopy), and XPS (X-ray photoelectron spectroscopy) results showed that aluminosilicate non-vacuum sintering can form open micro- and nanoporous structures on HTZ surfaces, and that porous aluminosilicate coatings obtain a larger number, smaller size, and more uniformly shaped silver nanoparticles than smooth aluminosilicate coatings, and could be deposited deeper in the coating. The ICP-AES (inductively coupled plasma-atomic emission spectroscopy) results showed that the early silver ion release of both the smooth silver coating and the porous silver coating was obvious, the silver ion concentration released by the former was higher than that of the latter. However, the silver ion concentration released by the porous silver coating was higher than that of the smooth coating when the release slowed down. Both smooth and porous silver coatings both inhibited E. coli (Escherichia coli), S. aureus (Staphylococcus aureus), and L. acidophilus (L. acidophilus), and porous silver coatings had stronger antibacterial properties. The silver coating was successfully constructed on the surface of HTZ, through aluminium silicate sintering and silver nitrate solution impregnation. It was found that the high concentration environment of silver nitrate solution was more advantageous for nano-Ag deposition, and the non-vacuum sintered porous surface was able to obtain a larger number of nano-Ag particles with smaller sizes. The porous Ag coating exhibited superior antibacterial properties. It was suggested that the HTZ with silver coating had clinical application, and good antibacterial properties that can improve the survival rate and service life of implants.
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Affiliation(s)
- Min Peng
- Department of Stomatology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
- School of Medicine, University of Electronic Science and Technology of Chengdu, Sichuan, China
| | - Jun-Lan Chuan
- Department of Pharmacy, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Gao-Ping Zhao
- Department of Gastroinstestinal Surgery, Sichuan Academy of medical sciences and Sichuan Provincial People's Hospital, University of Medical sciences and technology of China, Chengdu, Sichuan, China
| | - Qiang Fu
- Organ Transplantation Center, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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12
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Donkor GY, Anderson GM, Stadler M, Tawiah PO, Orellano CD, Edwards KA, Dahl JU. A novel ruthenium-silver based antimicrobial potentiates aminoglycoside activity against Pseudomonas aeruginosa. mSphere 2023; 8:e0019023. [PMID: 37646510 PMCID: PMC10597350 DOI: 10.1128/msphere.00190-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/05/2023] [Indexed: 09/01/2023] Open
Abstract
The rapid dissemination of antibiotic resistance combined with the decline in the discovery of novel antibiotics represents a major challenge for infectious disease control that can only be mitigated by investments in novel treatment strategies. Alternative antimicrobials, including silver, have regained interest due to their diverse mechanisms of inhibiting microbial growth. One such example is AGXX, a broad-spectrum antimicrobial that produces highly cytotoxic reactive oxygen species (ROS) to inflict extensive macromolecular damage. Due to the connections identified between ROS production and antibiotic lethality, we hypothesized that AGXX could potentially increase the activity of conventional antibiotics. Using the gram-negative pathogen Pseudomonas aeruginosa, we screened possible synergistic effects of AGXX on several antibiotic classes. We found that the combination of AGXX and aminoglycosides tested at sublethal concentrations led to a rapid exponential decrease in bacterial survival and restored the sensitivity of a kanamycin-resistant strain. ROS production contributes significantly to the bactericidal effects of AGXX/aminoglycoside treatments, which is dependent on oxygen availability and can be reduced by the addition of ROS scavengers. Additionally, P. aeruginosa strains deficient in ROS detoxifying/repair genes were more susceptible to AGXX/aminoglycoside treatment. We further demonstrate that this synergistic interaction was associated with a significant increase in outer and inner membrane permeability, resulting in increased antibiotic influx. Our study also revealed that AGXX/aminoglycoside-mediated killing requires an active proton motive force across the bacterial membrane. Overall, our findings provide an understanding of cellular targets that could be inhibited to increase the activity of conventional antimicrobials. IMPORTANCE The emergence of drug-resistant bacteria coupled with the decline in antibiotic development highlights the need for novel alternatives. Thus, new strategies aimed at repurposing conventional antibiotics have gained significant interest. The necessity of these interventions is evident especially in gram-negative pathogens as they are particularly difficult to treat due to their outer membrane. This study highlights the effectiveness of the antimicrobial AGXX in potentiating aminoglycoside activities against P. aeruginosa. The combination of AGXX and aminoglycosides not only reduces bacterial survival rapidly but also significantly re-sensitizes aminoglycoside-resistant P. aeruginosa strains. In combination with gentamicin, AGXX induces increased endogenous oxidative stress, membrane damage, and iron-sulfur cluster disruption. These findings emphasize AGXX's potential as a route of antibiotic adjuvant development and shed light on potential targets to enhance aminoglycoside activity.
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Affiliation(s)
- Gracious Yoofi Donkor
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
| | - Greg M. Anderson
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
| | - Michael Stadler
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
| | - Patrick Ofori Tawiah
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
| | - Carl D. Orellano
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
| | - Kevin A. Edwards
- School of Biological Sciences, Illinois State University, Cell Biology, Normal, Illinois, USA
| | - Jan-Ulrik Dahl
- School of Biological Sciences, Illinois State University, Microbiology, Normal, Illinois, USA
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13
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Pham T, Nguyen TT, Nguyen NH, Hayles A, Li W, Pham DQ, Nguyen CK, Nguyen T, Vongsvivut J, Ninan N, Sabri Y, Zhang W, Vasilev K, Truong VK. Transforming Spirulina maxima Biomass into Ultrathin Bioactive Coatings Using an Atmospheric Plasma Jet: A New Approach to Healing of Infected Wounds. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2305469. [PMID: 37715087 DOI: 10.1002/smll.202305469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/21/2023] [Indexed: 09/17/2023]
Abstract
The challenge of wound healing, particularly in patients with comorbidities such as diabetes, is intensified by wound infection and the accelerating problem of bacterial resistance to current remedies such as antibiotics and silver. One promising approach harnesses the bioactive and antibacterial compound C-phycocyanin from the microalga Spirulina maxima. However, the current processes of extracting this compound and developing coatings are unsustainable and difficult to achieve. To circumvent these obstacles, a novel, sustainable argon atmospheric plasma jet (Ar-APJ) technology that transforms S. maxima biomass into bioactive coatings is presented. This Ar-APJ can selectively disrupt the cell walls of S. maxima, converting them into bioactive ultrathin coatings, which are found to be durable under aqueous conditions. The findings demonstrate that Ar-APJ-transformed bioactive coatings show better antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. Moreover, these coatings exhibit compatibility with macrophages, induce an anti-inflammatory response by reducing interleukin 6 production, and promote cell migration in keratinocytes. This study offers an innovative, single-step, sustainable technology for transforming microalgae into bioactive coatings. The approach reported here has immense potential for the generation of bioactive coatings for combating wound infections and may offer a significant advance in wound care research and application.
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Affiliation(s)
- Tuyet Pham
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Tien Thanh Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- College of Medicine and Pharmacy, Tra Vinh University, Tra Vinh, 87000, Vietnam
| | - Ngoc Huu Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Biomedical Engineering, University of Sydney, Darlington, NSW, 2006, Australia
| | - Andrew Hayles
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Wenshao Li
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Duy Quang Pham
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Engineering, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Chung Kim Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Trung Nguyen
- College of Science and Engineering, Flinders University, Adelaide, SA, 5042, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy Beamline, ANSTO Australian Synchrotron, Clayton, Victoria, 3168, Australia
| | - Neethu Ninan
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Ylias Sabri
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia
| | - Wei Zhang
- Advanced Marine Biomanufacturing Laboratory, Centre for Marine Bioproduct Development, College of Medicine and Public Health, Flinders University, Adelaide, 5042, Australia
| | - Krasimir Vasilev
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Vi Khanh Truong
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
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14
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Rolband L, Godakhindi V, Vivero-Escoto JL, Afonin KA. Demonstrating the Synthesis and Antibacterial Properties of Nanostructured Silver. JOURNAL OF CHEMICAL EDUCATION 2023; 100:3547-3555. [PMID: 37720521 PMCID: PMC10501122 DOI: 10.1021/acs.jchemed.3c00125] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/29/2023] [Indexed: 09/19/2023]
Abstract
Investigating and understanding novel antibacterial agents is a necessary task as there is a constant increase in the number of multidrug-resistant bacterial species. The use of nanotechnology to combat drug-resistant bacteria is an important research area. The laboratory experiment described herein demonstrates that changes in the nanostructure of a material lead to significantly different antibacterial efficacies. Silver has been known to be an effective antibacterial agent throughout history, but its therapeutic uses are limited when present as either the bulk material or cations in solution. Silver nanoparticles (AgNPs) and DNA-templated silver nanoclusters (DNA-AgNCs) are both nanostructured silver materials that show vastly different antibacterial activities when incubated with E. coli in liquid culture. This work aims to provide students with hands-on experience in the synthesis and characterization of nanomaterials and basic microbiology skills; moreover, it is applicable to undergraduate and graduate curricula.
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Affiliation(s)
- Lewis Rolband
- Department
of Chemistry, University of North Carolina
at Charlotte, Charlotte, North Carolina 28223, United States
| | - Varsha Godakhindi
- Department
of Chemistry, University of North Carolina
at Charlotte, Charlotte, North Carolina 28223, United States
| | - Juan L. Vivero-Escoto
- Department
of Chemistry, University of North Carolina
at Charlotte, Charlotte, North Carolina 28223, United States
| | - Kirill A. Afonin
- Department
of Chemistry, University of North Carolina
at Charlotte, Charlotte, North Carolina 28223, United States
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15
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Argumedo-Delira R, Díaz-Martinez ME, Martínez MJG. Formation of silver halos by Sphingomonas paucimobilis MX8 and its bioleaching of silver from computer keyboard printed circuit boards. Braz J Microbiol 2023; 54:1689-1693. [PMID: 37171535 PMCID: PMC10484863 DOI: 10.1007/s42770-023-00994-4] [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] [Received: 11/29/2022] [Accepted: 04/25/2023] [Indexed: 05/13/2023] Open
Abstract
Silver (Ag) is currently obtained from primary and secondary sources through hydrometallurgical and pyrometallurgical processes. However, these processes consume high amounts of energy and are environmentally unfriendly. The search for bacteria tolerant with a high leaching capacity for to Ag is therefore a necessary requirement as part of the development of bioleaching technologies with reduced impact on the environment and lower energy expenditure. In this sense, the objective of this research was to evaluate the tolerance of Sphingomonas paucimobilis MX8 to Ag added to nutrient agar, and to determine whether this tolerance could favor the bioleaching of Ag present on the printed circuit boards (PCBs) of computer keyboards. The bacteria Sphingomonas paucimobilis MX8 was cultured in Petri dishes with nutrient agar and four different concentrations of AgNO3 (200, 400, 600, and 800 mg L-1) at 28 °C for 10 days. For the bioleaching experiment, the bacteria were grown in a mineral medium with computer keyboard PCBs for 30 days at room temperature (17 to 22 °C) and centrifugation at 150 rpm. The results indicate that Sphingomonas paucimobilis MX8 is tolerant to Ag and forms a silvery halo around its growth in the presence of this metal. Furthermore, Sphingomonas paucimobilis MX8 was able to bioleach 12% of the Ag found in computer keyboard PCBs. The results obtained could help generate more environmentally friendly silver bioleaching processes in which the silver bioleaching capacity of this bacterium is increased.
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Affiliation(s)
- Rosalba Argumedo-Delira
- Instituto de Química Aplicada, Universidad Veracruzana, Luis Castelazo Ayala S/N, Col. Industrial Animas, 91190, Xalapa, Veracruz, México.
- Facultad de Ciencias Agrícolas, Universidad Veracruzana, Circuito Gonzalo Aguirre Beltrán S/N, 91000, Xalapa, Veracruz, México.
| | - María Esther Díaz-Martinez
- Facultad de Ciencias Agrícolas, Universidad Veracruzana, Circuito Gonzalo Aguirre Beltrán S/N, 91000, Xalapa, Veracruz, México
| | - Mario J Gómez Martínez
- Departamento de Producción y Sanidad Vegetal, Facultad de Ingeniería Agronómica, Universidad del Tolima, Barrio Santa Helena, 730001, Ibagué, Tolima, Colombia
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16
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Reimers J, Trinh HC, Wiese B, Meyer S, Brehling J, Flenner S, Hagemann J, Kruth M, Kibkalo L, Ćwieka H, Hindenlang B, Lipinska-Chwalek M, Mayer J, Willumeit-Römer R, Greving I, Zeller-Plumhoff B. Development of a Bioreactor-Coupled Flow-Cell Setup for 3D In Situ Nanotomography of Mg Alloy Biodegradation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:35600-35610. [PMID: 37459562 PMCID: PMC10375473 DOI: 10.1021/acsami.3c04054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Functional materials feature hierarchical microstructures that define their unique set of properties. The prediction and tailoring of these require a multiscale knowledge of the mechanistic interaction of microstructure and property. An important material in this respect is biodegradable magnesium alloys used for implant applications. To correlate the relationship between the microstructure and the nonlinear degradation process, high-resolution in situ three-dimensional (3D) imaging experiments must be performed. For this purpose, a novel experimental flow cell is presented which allows for the in situ 3D-nano imaging of the biodegradation process of materials with nominal resolutions below 100 nm using nanofocused hard X-ray radiation from a synchrotron source. The flow cell setup can operate under adjustable physiological and hydrodynamic conditions. As a model material, the biodegradation of thin Mg-4Ag wires in simulated body fluid under physiological conditions and a flow rate of 1 mL/min is studied. The use of two full-field nanotomographic imaging techniques, namely transmission X-ray microscopy and near-field holotomography, is compared, revealing holotomography as the superior imaging technique for this purpose. Additionally, the importance of maintaining physiological conditions is highlighted by the preliminary results. Supporting measurements using electron microscopy to investigate the chemical composition of the samples after degradation are performed.
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Affiliation(s)
- Jan Reimers
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Huu Chánh Trinh
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Björn Wiese
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Sebastian Meyer
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Jens Brehling
- Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Silja Flenner
- Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Johannes Hagemann
- CXNS-Center for X-ray and Nano Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg 22607, Germany
| | - Maximilian Kruth
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Lidia Kibkalo
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Hanna Ćwieka
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Birte Hindenlang
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Marta Lipinska-Chwalek
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Joachim Mayer
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52425, Germany
- Central Facility for Electron Microscopy, RWTH Aachen University, Ahornstraße 55, Aachen 52074, Germany
| | - Regine Willumeit-Römer
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Imke Greving
- Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
| | - Berit Zeller-Plumhoff
- Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, Geesthacht 21502, Germany
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17
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Donkor GY, Anderson GM, Stadler M, Tawiah PO, Orellano CD, Edwards KA, Dahl JU. The Novel Silver-Containing Antimicrobial Potentiates Aminoglycoside Activity Against Pseudomonas aeruginosa. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.15.532855. [PMID: 36993297 PMCID: PMC10055142 DOI: 10.1101/2023.03.15.532855] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The rapid dissemination of antibiotic resistance combined with the decline in the discovery of novel antibiotics represents a major challenge for infectious disease control that can only be mitigated by investments into novel treatment strategies. Alternative antimicrobials, including silver, have regained interest due to their diverse mechanisms of inhibiting microbial growth. One such example is AGXX®, a broad-spectrum silver containing antimicrobial that produces highly cytotoxic reactive oxygen species (ROS) to inflict extensive macromolecular damage. Due to connections identified between ROS production and antibiotic lethality, we hypothesized that AGXX® could potentially increase the activity of conventional antibiotics. Using the gram-negative pathogen Pseudomonas aeruginosa, we screened possible synergistic effects of AGXX® on several antibiotic classes. We found that the combination of AGXX® and aminoglycosides tested at sublethal concentrations led to a rapid exponential decrease in bacterial survival and restored sensitivity of a kanamycin-resistant strain. ROS production contributes significantly to the bactericidal effects of AGXX®/aminoglycoside treatments, which is dependent on oxygen availability and can be reduced by the addition of ROS scavengers. Additionally, P. aeruginosa strains deficient in ROS detoxifying/repair genes were more susceptible to AGXX®/aminoglycoside treatment. We further demonstrate that this synergistic interaction was associated with significant increase in outer and inner membrane permeability, resulting in increased antibiotic influx. Our study also revealed that AGXX®/aminoglycoside-mediated killing requires an active proton motive force across the bacterial membrane. Overall, our findings provide an understanding of cellular targets that could be inhibited to increase the activity of conventional antimicrobials.
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18
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Ajaykumar AP, Sabira O, Sebastian M, Varma SR, Roy KB, Binitha VS, Rasheed VA, Jayaraj KN, Vignesh AR. A novel approach for the biosynthesis of silver nanoparticles using the defensive gland extracts of the beetle, Luprops tristis Fabricius. Sci Rep 2023; 13:10186. [PMID: 37349362 PMCID: PMC10287683 DOI: 10.1038/s41598-023-37175-0] [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] [Received: 04/04/2023] [Accepted: 06/17/2023] [Indexed: 06/24/2023] Open
Abstract
Discovering novel natural resources for the biological synthesis of metal nanoparticles is one of the two key challenges facing by the field of nanoparticle synthesis. The second challenge is a lack of information on the chemical components needed for the biological synthesis and the chemical mechanism involved in the metal nanoparticles synthesis. In the current study, microwave-assisted silver nanoparticle (AgNP) synthesis employing the defensive gland extract of Mupli beetle, Luprops tristis Fabricius (Order: Coleoptera; Family: Tenebrionidae), addresses these two challenges. This study was conducted without killing the experimental insect. Earlier studies in our laboratory showed the presence of the phenolic compounds, 2,3-dimethyl-1,4-benzoquinone, 1,3-dihydroxy-2-methylbenzene, and 2,5-dimethylhydroquinone in the defensive gland extract of L. tristis. The results of the current study show that the phenolic compounds in the defensive gland extract of the beetle has the ability to reduce silver ions into AgNPs and also acts as a good capping and stabilizing agent. A possible mechanism for the reduction of silver nitrate (AgNO3) into AgNPs is suggested. The synthesized AgNPs were characterized by Ultraviolet-Visible (UV-Vis) spectroscopy, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy energy-dispersive X-ray (SEM-EDX) analysis and high-resolution transmission electron microscopic (HR-TEM) techniques. The stability of biologically synthesized nanoparticles was studied by zeta potential analysis. The TEM analysis confirmed that AgNPs are well dispersed and almost round shaped. The average size of nanoparticle ranges from 10 to 20 nm. EDX analysis showed that silver is the prominent metal present in the nanomaterial solution. The AgNPs synthesized have antibacterial property against both Staphylococcus aureus and Escherichia coli. Radical scavenging (DPPH) assay was used to determine the antioxidant activity of the AgNPs. AgNPs exhibited anticancer activity in a cytotoxicity experiment against Dalton's lymphoma ascites (DLA) cell line.
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Affiliation(s)
- Anthyalam Parambil Ajaykumar
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India.
| | - Ovungal Sabira
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
| | - Merin Sebastian
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
| | - Sudhir Rama Varma
- Clinical Sciences Department, Centre for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Kanakkassery Balan Roy
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
- Department of Chemistry, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
| | | | - Vazhanthodi Abdul Rasheed
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
| | - Kodangattil Narayanan Jayaraj
- Basic Sciences Department, Centre for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates.
| | - Attuvalappil Ravidas Vignesh
- Division of Bio-Nanomaterial, Department of Zoology, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, India
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19
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Zhou H, Li Q, Zhang Z, Wang X, Niu H. Recent Advances in Superhydrophobic and Antibacterial Cellulose-Based Fibers and Fabrics: Bio-inspiration, Strategies, and Applications. ADVANCED FIBER MATERIALS 2023:1-37. [PMID: 37361104 PMCID: PMC10201051 DOI: 10.1007/s42765-023-00297-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/03/2023] [Indexed: 06/28/2023]
Abstract
Cellulose-based fabrics are ubiquitous in our daily lives. They are the preferred choice for bedding materials, active sportswear, and next-to-skin apparels. However, the hydrophilic and polysaccharide characteristics of cellulose materials make them vulnerable to bacterial attack and pathogen infection. The design of antibacterial cellulose fabrics has been a long-term and on-going effort. Fabrication strategies based on the construction of surface micro-/nanostructure, chemical modification, and the application of antibacterial agents have been extensively investigated by many research groups worldwide. This review systematically discusses recent research on super-hydrophobic and antibacterial cellulose fabrics, focusing on morphology construction and surface modification. First, natural surfaces showing liquid-repellent and antibacterial properties are introduced and the mechanisms behind are explained. Then, the strategies for fabricating super-hydrophobic cellulose fabrics are summarized, and the contribution of the liquid-repellent function to reducing the adhesion of live bacteria and removing dead bacteria is elucidated. Representative studies on cellulose fabrics functionalized with super-hydrophobic and antibacterial properties are discussed in detail, and their potential applications are also introduced. Finally, the challenges in achieving super-hydrophobic antibacterial cellulose fabrics are discussed, and the future research direction in this area is proposed. Graphical Abstract The figure summarizes the natural surfaces and the main fabrication strategies of superhydrophobic antibacterial cellulose fabrics and their potential applications. Supplementary Information The online version contains supplementary material available at 10.1007/s42765-023-00297-1.
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Affiliation(s)
- Hua Zhou
- College of Textiles and Clothing, Qingdao University, Qingdao, 266071 China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education Collaborative, Qingdao University, Qingdao, 266071 China
| | - Qingshuo Li
- College of Textiles and Clothing, Qingdao University, Qingdao, 266071 China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education Collaborative, Qingdao University, Qingdao, 266071 China
| | - Zhong Zhang
- College of Textiles and Clothing, Qingdao University, Qingdao, 266071 China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education Collaborative, Qingdao University, Qingdao, 266071 China
| | - Xungai Wang
- JC STEM Lab of Sustainable Fibers and Textiles, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Haitao Niu
- College of Textiles and Clothing, Qingdao University, Qingdao, 266071 China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education Collaborative, Qingdao University, Qingdao, 266071 China
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20
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Dixit S, Varshney S, Gupta D, Sharma S. Textiles as fomites in the healthcare system. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12569-2. [PMID: 37199751 DOI: 10.1007/s00253-023-12569-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/19/2023]
Abstract
Nosocomial infections or healthcare-associated infections (HAIs) are acquired under medical care in healthcare facilities. In hospital environments, the transmission of infectious diseases through textiles such as white coats, bed linen, curtains, and towels are well documented. Textile hygiene and infection control measures have become more important in recent years due to the growing concerns about textiles as fomites in healthcare settings. However, systematic research in this area is lacking; the factors contributing to the transmission of infections through textiles needs to be better understood. The review aims to critically explore textiles as contaminants in healthcare systems, and to identify potential risks they may pose to patients and healthcare workers. It delineates different factors affecting bacterial adherence on fabrics, such as surface properties of bacteria and fabrics, and environmental factors. It also identifies areas that require further research to reduce the risk of HAIs and improve textile hygiene practices. Finally, the review elaborates on the strategies currently employed, and those that can be employed to limit the spread of nosocomial infections through fabrics. Implementing textile hygiene practices effectively in healthcare facilities requires a thorough analysis of factors affecting fabric-microbiome interactions, followed by designing newer fabrics that discourage pathogen load. KEY POINTS: • Healthcare textiles act as a potential reservoir of nosocomial pathogens • Survival of pathogens is affected by surface properties of fabric and bacteria • Guidelines required for fabrics that discourage microbial load, for hospital use.
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Affiliation(s)
- Shweta Dixit
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Swati Varshney
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Deepti Gupta
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Shilpi Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India.
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21
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Ghazwani M, Hani U, Alqarni MH, Alam A. Development and Characterization of Methyl-Anthranilate-Loaded Silver Nanoparticles: A Phytocosmetic Sunscreen Gel for UV Protection. Pharmaceutics 2023; 15:pharmaceutics15051434. [PMID: 37242676 DOI: 10.3390/pharmaceutics15051434] [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: 03/27/2023] [Revised: 04/25/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Methyl anthranilate (MA) is a naturally derived compound commonly used in cosmetic products, such as skin care products, fine perfumes, etc. The goal of this research was to develop a UV-protective sunscreen gel using methyl-anthranilate-loaded silver nanoparticles (MA-AgNPs). The microwave approach was used to develop the MA-AgNPs, which were then optimized using Box-Behnken Design (BBD). Particle size (Y1) and absorbance (Y2) were chosen as the response variables, while AgNO3 (X1), methyl anthranilate concentration (X2), and microwave power (X3) were chosen as the independent variables. Additionally, the prepared AgNPs were approximated for investigations on in vitro active ingredient release, dermatokinetics, and confocal laser scanning microscopy (CLSM). The study's findings showed that the optimal MA-loaded AgNPs formulation had a particle size, polydispersity index, zeta potential, and percentage entrapment efficiency (EE) of 200 nm, 0.296 mV, -25.34 mV, and 87.88%, respectively. The image from transmission electron microscopy (TEM) demonstrated the spherical shape of the nanoparticles. According to an in vitro investigation on active ingredient release, MA-AgNPs and MA suspension released the active ingredient at rates of 81.83% and 41.62%, respectively. The developed MA-AgNPs formulation was converted into a gel by using Carbopol 934 as a gelling agent. The spreadability and extrudability of MA-AgNPs gel were found to be 16.20 and 15.190, respectively, demonstrating that the gel may spread very easily across the skin's surface. The MA-AgNPs formulation demonstrated improved antioxidant activity in comparison to pure MA. The MA-AgNPs sunscreen gel formulation displayed non-Newtonian pseudoplastic behaviour, which is typical of skin-care products, and was found to be stable during the stability studies. The sun protection factor (SPF) value of MA-AgNPG was found to be 35.75. In contrast to the hydroalcoholic Rhodamine B solution (5.0 µm), the CLSM of rat skin treated with the Rhodamine B-loaded AgNPs formulation showed a deeper penetration of 35.0 µm, indicating the AgNPs formulation was able to pass the barrier and reach the skin's deeper layers for more efficient delivery of the active ingredient. This can help with skin conditions where deeper penetration is necessary for efficacy. Overall, the results indicated that the BBD-optimized MA-AgNPs provided some of the most important benefits over conventional MA formulations for the topical delivery of methyl anthranilate.
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Affiliation(s)
- Mohammed Ghazwani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, P.O. Box 1882, Abha 61441, Saudi Arabia
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, P.O. Box 1882, Abha 61441, Saudi Arabia
| | - Mohammed H Alqarni
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Aftab Alam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
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22
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Danai L, Rolband LA, Perdomo VA, Skelly E, Kim T, Afonin KA. Optical, structural and antibacterial properties of silver nanoparticles and DNA-templated silver nanoclusters. Nanomedicine (Lond) 2023; 18:769-782. [PMID: 37345552 PMCID: PMC10308257 DOI: 10.2217/nnm-2023-0082] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/06/2023] [Indexed: 06/23/2023] Open
Abstract
Silver nanoparticles (AgNPs) are increasingly considered for biomedical applications as drug-delivery carriers, imaging probes and antibacterial agents. Silver nanoclusters (AgNCs) represent another subclass of nanoscale silver. AgNCs are a promising tool for nanomedicine due to their small size, structural homogeneity, antibacterial activity and fluorescence, which arises from their molecule-like electron configurations. The template-assisted synthesis of AgNCs relies on organic molecules that act as polydentate ligands. In particular, single-stranded nucleic acids reproducibly scaffold AgNCs to provide fluorescent, biocompatible materials that are incorporable in other formulations. This mini review outlines the design and characterization of AgNPs and DNA-templated AgNCs, discusses factors that affect their physicochemical and biological properties, and highlights applications of these materials as antibacterial agents and biosensors.
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Affiliation(s)
- Leyla Danai
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Lewis A Rolband
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | | | - Elizabeth Skelly
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Taejin Kim
- Physical Sciences Department, West Virginia University Institute of Technology, Beckley, WV 25801, USA
| | - Kirill A Afonin
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
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23
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Tanabe S, Hirata K, Tsukiyama K, Lisy JM, Ishiuchi SI, Fujii M. Can Ag + Permeate through a Potassium Ion Channel? A Bottom-Up Approach by Infrared Spectroscopy of the Ag + Complex with the Partial Peptide of a Selectivity Filter. J Phys Chem Lett 2023; 14:2886-2890. [PMID: 36924459 PMCID: PMC10041629 DOI: 10.1021/acs.jpclett.2c03366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Silver and silver ions have a long history of antimicrobial activity and medical applications. Nevertheless, the activity of Ag+ against bacteria, how it enters a cell, has not yet been established. The K+ channel, a membrane protein, is a possible route. The addition of a channel inhibitor (4-aminopyridine) to modulate the Ag+ uptake could support this view. However, the inhibitor enhances the uptake of Ag+, the opposite result. We have applied cold ion trap infrared laser spectroscopy to complexes of Ag+ and Ac-Tyr-NHMe (a model for GYG) which is a portion of the selectivity filter in the K+ channel to consider the question of permeation. With support from quantum chemical calculations, we have determined the stable conformations of the complex. The conformations strongly suggest that Ag+ would not readily permeate the K+ channel. The mechanism of the unexpected enhancement by the inhibitor is discussed.
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Affiliation(s)
- Satoru Tanabe
- Department
of Chemistry, School of Science, Tokyo University
of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
- Laboratory
for Chemistry and Life Science, Institute of innovative research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Keisuke Hirata
- Laboratory
for Chemistry and Life Science, Institute of innovative research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- Department
of Chemistry, School of Science, Tokyo Institute
of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- International
Research Frontiers Initiative (IRFI), Institute of Innovation Research, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Koichi Tsukiyama
- Department
of Chemistry, School of Science, Tokyo University
of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - James M. Lisy
- International
Research Frontiers Initiative (IRFI), Institute of Innovation Research, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- Department
of Chemistry, University of Illinois at
Urbana—Champaign, Urbana, Illinois 61801, United States
| | - Shun-ichi Ishiuchi
- Laboratory
for Chemistry and Life Science, Institute of innovative research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- Department
of Chemistry, School of Science, Tokyo Institute
of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- International
Research Frontiers Initiative (IRFI), Institute of Innovation Research, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Masaaki Fujii
- Laboratory
for Chemistry and Life Science, Institute of innovative research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- International
Research Frontiers Initiative (IRFI), Institute of Innovation Research, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of
Life Science and Technology, Tokyo Institute
of Technology, 4259 Nagatsuta-cho,
Midori-ku, Yokohama 226-8503, Japan
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24
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Li Z, Liu P, Chen S, Liu X, Yu Y, Li T, Wan Y, Tang N, Liu Y, Gu Y. Bioinspired marine antifouling coatings: Antifouling mechanisms, design strategies and application feasibility studies. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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25
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Almuqrin A, Kaur IP, Walsh LJ, Seneviratne CJ, Zafar S. Amelioration Strategies for Silver Diamine Fluoride: Moving from Black to White. Antibiotics (Basel) 2023; 12:antibiotics12020298. [PMID: 36830209 PMCID: PMC9951939 DOI: 10.3390/antibiotics12020298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Topical cariostatic agents have become a reasonable alternative for managing dental caries in young children. Silver diamine fluoride (SDF) is a practical topical approach to arrest caries and avoid extensive and risky dental treatment. However, the literature demonstrates a parental hesitation towards accepting SDF because of black unaesthetic tooth discolouration following application. The rapid oxidation of ionic silver darkens demineralised tooth structure permanently. In this regard, nano-metallic antimicrobials could augment or substitute for silver, and thereby enhance SDF aesthetic performance. Recently, biomedical research has drawn attention to selenium nanoparticles (SeNPs) due to their antimicrobial, antioxidant, and antiviral potencies. Various in vitro studies have examined the effect of SeNPs on the virulence of bacteria. This narrative review explores practical issues when using SDF and suggests future directions to develop it, focusing on antimicrobial metals. Several methods are described that could be followed to reduce the discolouration concern, including the use of nanoparticles of silver, of silver fluoride, or of selenium or other metals with antimicrobial actions. There could also be value in using remineralising agents other than fluoride, such as NPs of hydroxyapatite. There could be variations made to formulations in order to lower the levels of silver and fluoride in the SDF or even to replace one or both of the silver and fluoride components completely. Moreover, since oxidation processes appear central to the chemistry of the staining, adding SeNPs which have antioxidant actions could have an anti-staining benefit; SeNPs could be used for their antimicrobial actions as well. Future research should address the topic of selenium chemistry to optimise how SeNPs would be used with or in place of ionic silver. Incorporating other antimicrobial metals as nanoparticles should also be explored, taking into account the optimal physicochemical parameters for each of these.
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26
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Ortiz-Magdaleno M, Sánchez-Vargas L, Gardea-Contreras D, Campos-Ibarra V, Pozos-Guillén A, Márquez-Preciado R. Antibiofilm properties of silver nanoparticles incorporated into polymethyl methacrylate used for dental applications. Biomed Mater Eng 2023:BME222513. [PMID: 36744329 DOI: 10.3233/bme-222513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Acrylic resins used in dental and biomedical applications do not have antimicrobial properties, their surface is susceptible to colonization of microorganisms. OBJECTIVE The aim of this study was to evaluate the antibiofilm properties of silver nanoparticles (AgNPs) deposited in a polymethyl methacrylate (PMMA) surface against a Staphylococcus aureus biofilm. METHODS The PMMA was impregnated with AgNPs by using the in-situ polymerization method. To determine the solubility of the incorporated silver (Ag+) atomic absorption spectrophotometry was used (AAS) at 24 h, 48 h, 7 days, and 30 days. Thirty specimens of PMMA with AgNPs and without NP (control group) were assembled in the CDC Biofilm Bioreactor system with a cell suspension of S. aureus. The specimens were removed at 6, 12, 24, 48, and 72 h to determine the viability profile and quantify the Arbitrary Fluorescence Units (AFU). RESULTS The AgNPs showed an irregular and quasispherical shape with an average size of 25 nm. AAS analysis demonstrated a low solubility of Ag+. The formation of the S. aureus biofilm increased as the evaluation periods continued up to 72 h. The experimental group showed poor growth, and a decrease in the intensity of the fluorescence demonstrated a statistically significant inhibition of the formation of the biofilm (P < 0.05) in relation to the control group at 6, 12, 24, 48, and 72 h. CONCLUSION AgNPs incorporated into PMMA decreased the growth and maturation of S. aureus biofilm.
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Affiliation(s)
- Marine Ortiz-Magdaleno
- Basic Science Laboratory, Faculty of Stomatology, San Luis Potosí University, San Luis Potosi, Mexico
| | - Luis Sánchez-Vargas
- Biochemical and Microbiology Laboratory, Faculty of Stomatology, San Luis Potosí University, San Luis Potosi, Mexico
| | - Delia Gardea-Contreras
- Paediatric Dentistry Postgraduate Program, Faculty of Stomatology, San Luis Potosí University, San Luis Potosi, Mexico
| | | | - Amaury Pozos-Guillén
- Basic Science Laboratory, Faculty of Stomatology, San Luis Potosí University, San Luis Potosi, Mexico
| | - Raúl Márquez-Preciado
- Paediatric Dentistry Postgraduate Program, Faculty of Stomatology, San Luis Potosí University, San Luis Potosi, Mexico
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Chen Q, Jing Y, Yin J, Li Z, Xiong W, Gong P, Zhang L, Li S, Pan R, Zhao X, Hao L. High Reflectivity and Thermal Conductivity Ag-Cu Multi-Material Structures Fabricated via Laser Powder Bed Fusion: Formation Mechanisms, Interfacial Characteristics, and Molten Pool Behavior. MICROMACHINES 2023; 14:362. [PMID: 36838062 PMCID: PMC9965232 DOI: 10.3390/mi14020362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Ag and Cu have different advantages and are widely used in key fields due to their typical highly electrical and thermal conductive (HETC) properties. Laser powder bed fusion (LPBF), an innovative technology for manufacturing metallic multi-material components with high accuracy, has expanded the application of Ag-Cu in emerging high-tech fields. In this study, the multi-material sandwich structures of Ag7.5Cu/Cu10Sn/Ag7.5Cu were printed using LPBF, and the formation mechanism, interface characteristics, and molten pool behavior of the Ag7.5Cu/Cu10Sn (A/C) and Cu10Sn/Ag7.5Cu (C/A) interfaces were studied to reveal the influence of different building strategies. At the A/C interface, pre-printed Ag7.5Cu promoted Marangoni turbulence at a relatively low energy density (EA/C = 125 J/mm3). Due to the recoil pressure, the molten pool at the A/C interface transformed from a stable keyhole mode to an unstable keyhole mode. These phenomena promoted the extensive migration of elements, forming a wider diffusion zone and reduced thermal cracking. At the C/A interface, the molten pool was rationed from the conduction mode with more pores to the transition mode with fewer defects due to the high energy density (EC/A = 187.5 J/mm3). This work offers a theoretical reference for the fabrication of HETC multi-material structures via LPBF under similar conditions.
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Affiliation(s)
- Qiaoyu Chen
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Yongbin Jing
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Jie Yin
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Zheng Li
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Wei Xiong
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Ping Gong
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Academy of Fine Arts, Guizhou Normal University, Guiyang 550001, China
| | - Lu Zhang
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Simeng Li
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Ruiqi Pan
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Xiya Zhao
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
| | - Liang Hao
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
- Hubei Gem & Jewelry Engineering Technology Research Center, Wuhan 430074, China
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28
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das Neves MDS, Scandorieiro S, Pereira GN, Ribeiro JM, Seabra AB, Dias AP, Yamashita F, Martinez CBDR, Kobayashi RKT, Nakazato G. Antibacterial Activity of Biodegradable Films Incorporated with Biologically-Synthesized Silver Nanoparticles and the Evaluation of Their Migration to Chicken Meat. Antibiotics (Basel) 2023; 12:antibiotics12010178. [PMID: 36671379 PMCID: PMC9854460 DOI: 10.3390/antibiotics12010178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/12/2023] [Accepted: 01/12/2023] [Indexed: 01/17/2023] Open
Abstract
The food industry has been exploring the association of polymers with nanoparticles in packaging production, and active products are essential to increase the shelf life of food and avoid contamination. Our study developed starch-poly (adipate co-terephthalate butyl) films with silver nanoparticles produced with Fusarium oxysporum components (bio-AgNPs), intending to control foodborne pathogens. The bio-AgNPs showed activity against different Salmonella serotypes, including multidrug-resistant Salmonella Saint Paul and Salmonella Enteritidis, with minimum bactericidal concentrations ranging from 4.24 to 16.98 µg/mL. Biodegradable films with bio-AgNPs inhibited the growth of up to 106Salmonella isolates. Silver migration from the films to chicken was analyzed using electrothermal atomic absorption spectrophotometry, and the results showed migration values (12.94 mg/kg and 3.79 mg/kg) above the limits allowed by the European Food Safety Authority (EFSA) (0.05 mg/kg). Thus, it is necessary to improve the technique to avoid the migration of silver to chicken meat, since these concentrations can be harmful.
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Affiliation(s)
- Meiriele da S. das Neves
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Sara Scandorieiro
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Giovana N. Pereira
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Jhonatan M. Ribeiro
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Amedea B. Seabra
- Center of Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, SP, Brazil
| | - Adriana P. Dias
- Department of Food Science and Technology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Fabio Yamashita
- Department of Food Science and Technology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Claudia B. dos R. Martinez
- Laboratory of Animal Ecophysiology, Department of Physiological Science, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Renata K. T. Kobayashi
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Gerson Nakazato
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Londrina State University, Londrina 86057-970, PR, Brazil
- Correspondence: ; Tel.: +55-43-3371-4788
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29
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Yan J, Wang Q, Yang J, Rutter P, Xing M, Li B. Chemical Synthesis of Innovative Silver Nanohybrids with Synergistically Improved Antimicrobial Properties. Int J Nanomedicine 2023; 18:2295-2305. [PMID: 37163141 PMCID: PMC10164387 DOI: 10.2147/ijn.s405255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/12/2023] [Indexed: 05/11/2023] Open
Abstract
Background The wide use of antibiotics has created challenges related to antibiotic-resistant bacteria, which have been increasingly found in recent decades. Antibiotic resistance has led to limited choices of antibiotics. Multiple old antimicrobial agents have high antimicrobial properties toward bacteria, but they unfortunately also possess high toxicity toward humans. For instance, silver (Ag) compounds were frequently used to treat tetanus and rheumatism in the 19th century and to treat colds and gonorrhea in the early 20th century. However, the high toxicity of Ag has limited its clinical use. Purpose We aimed to reformulate Ag to reduce its toxicity toward human cells like osteoblasts and to optimize its antimicrobial properties. Results Ag, an old antimicrobial agent, was reformulated by hybriding nanomaterials of different dimensions, and silver nanoparticles (AgNPs) of controllable sizes (95-200 nm) and varying shapes (cube, snowflake, and sphere) were synthesized on carbon nanotubes (CNTs). The obtained AgNP-CNT nanohybrids presented significantly higher killing efficacy against Staphylococcus aureus (S. aureus) compared to AgNPs at the same molar concentration and showed synergism in killing S. aureus at 0.2 and 0.4 mM. AgNPs presented significant osteoblast toxicity; in contrast, AgNP-CNT nanohybrids demonstrated significantly enhanced osteoblast viability at 0.04-0.8 mM. The killing of S. aureus by AgNP-CNT nanohybrids was fast, occurring within 15 min. Conclusion Ag was successfully reformulated and Ag nanohybrids with various AgNP shapes on CNTs were synthesized. The nanohybrids presented significantly enhanced antimicrobial properties and significantly higher osteoblast cell viability compared to AgNPs, showing promise as an innovative antimicrobial nanomaterial for a broad range of biomedical applications.
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Affiliation(s)
- Jianhua Yan
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Qifei Wang
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Spine Center, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Junlin Yang
- Spine Center, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Paige Rutter
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T2N2, Canada
| | - Bingyun Li
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
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Skelly E, Rolband LA, Beasock D, Afonin KA. Synthesis of DNA-Templated Silver Nanoclusters and the Characterization of Their Optical Properties and Biological Activity. Methods Mol Biol 2023; 2709:299-307. [PMID: 37572290 PMCID: PMC10482316 DOI: 10.1007/978-1-0716-3417-2_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/14/2023]
Abstract
DNA-templated silver nanoclusters (DNA-AgNCs) are a unique class of bioinorganic nanomaterials. The optical properties and biological activities of DNA-AgNCs are readily modulated by the minor adjustments in the sequence or structure of the templating oligonucleotide. Excitation-emission matrix spectroscopy (EEMS) enables the fluorescence of compounds to be measured in a way that examines the entirety of a material's fluorescent properties. The use of EEMS for the characterization of DNA-AgNCs allows for multiple fluorescence peaks to be readily identified while providing the excitation and emission wavelengths of each signal. To assess the antibacterial and cytotoxic activities of DNA-AgNCs, two separate experimental approaches are used. Assessing the growth of bacteria over time is accomplished by measuring the optical density of the bacterial suspension with 600 nm light, which is directly related to the number of bacteria in suspension. In order to evaluate the DNA-AgNCs for cytotoxic activity, cell viability assays which probe mitochondrial activity were used. Herein, we describe protocols for the characterization of the fluorescent, antibacterial, and cytotoxic activities of DNA-AgNCs using EEM, optical density measurements, and cell viability assays.
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31
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Ong XR, Chen AX, Li N, Yang YY, Luo HK. Nanocellulose: Recent Advances Toward Biomedical Applications. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202200076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Xuan-Ran Ong
- Agency for Science, Technology and Research Institute of Sustainability for Chemicals, Energy and Environment 1 Pesek Road, Jurong Island Singapore 627833 Singapore
| | - Adrielle Xianwen Chen
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - Ning Li
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - Yi Yan Yang
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - He-Kuan Luo
- Agency for Science, Technology and Research Institute of Sustainability for Chemicals, Energy and Environment 1 Pesek Road, Jurong Island Singapore 627833 Singapore
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Sharma B, Shukla S, Rattan R, Fatima M, Goel M, Bhat M, Dutta S, Ranjan RK, Sharma M. Antimicrobial Agents Based on Metal Complexes: Present Situation and Future Prospects. Int J Biomater 2022; 2022:6819080. [PMID: 36531969 PMCID: PMC9754840 DOI: 10.1155/2022/6819080] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 09/30/2022] [Accepted: 10/10/2022] [Indexed: 08/27/2023] Open
Abstract
The rise in antimicrobial resistance is a cause of serious concern since the ages. Therefore, a dire need to explore new antimicrobial entities that can combat against the increasing threat of antibiotic resistance is realized. Studies have shown that the activity of the strongest antibiotics has reduced drastically against many microbes such as microfungi and bacteria (Gram-positive and Gram-negative). A ray of hope, however, was witnessed in early 1940s with the development of new drug discovery and use of metal complexes as antibiotics. Many new metal-based drugs were developed from the metal complexes which are potentially active against a number of ailments such as cancer, malaria, and neurodegenerative diseases. Therefore, this review is an attempt to describe the present scenario and future development of metal complexes as antibiotics against wide array of microbes.
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Affiliation(s)
- Bharti Sharma
- School of Biosciences and Biotechnology, BGSB University, Rajouri, Jammu and Kashmir 185234, India
| | - Sudeep Shukla
- Environment Pollution Analysis Lab, Bhiwadi, Alwar, Rajasthan 301019, India
| | - Rohit Rattan
- WWF-India Field Office, ITI Road, Rajouri, Jammu and Kashmir 185132, India
| | - Musarrat Fatima
- Department of Botany, BGSB University, Rajouri, Jammu and Kashmir 185234, India
| | - Mayurika Goel
- TERI Deakin Nanobiotechnology Centre, Sustainable Agriculture Program, The Energy and Resource Institute, Gurugram, Haryana, India
| | - Mamta Bhat
- School of Biosciences and Biotechnology, BGSB University, Rajouri, Jammu and Kashmir 185234, India
| | - Shruti Dutta
- Amity School of Earth and Environmental Sciences, Amity University Haryana, Haryana, India
| | | | - Mamta Sharma
- Aditi Mahavidyalaya, University of Delhi, New Delhi, India
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Cai J, Yu N, Guan F, Cai X, Hou R, Yuan Y. Response of electroactive biofilms from real wastewater to metal ion shock in bioelectrochemical systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:157158. [PMID: 35798101 DOI: 10.1016/j.scitotenv.2022.157158] [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: 04/28/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
The electrochemical activity of bioelectrochemical systems (BESs) was proven to be dependent on the stability of electroactive biofilms (EABs), but the response of EABs based on real wastewater to external disturbances is not fully known. Herein, we used real wastewater (beer brewery wastewater) as a substrate for culturing EABs and found that current generation, biomass, redox activity and extracellular polymeric substances (EPS) content in those EABs were lower as compared to EABs cultured with synthetic wastewaters (acetate and glucose). However, the EABs from the beer brewery wastewater showed moderate anti-shock resistance capability. The proteins and humic acid in loosely bound EPS (LB-EPS) exhibited a positive linear relationship with current recovery after Ag+ shock, indicating the importance of LB-EPS for protecting the EABs. Fluorescence and Fourier transform infrared spectroscopy integrated with two-dimensional correlation spectroscopy verified that the spectra of the protein-like region of LB-EPS changed considerably under the interference of Ag+ concentration and the CO group of humic acid or proteins was mainly responsible for binding with Ag+ to attenuate its toxicity to the EABs. This is the first study revealing the underlying molecular mechanism of EABs cultured with real wastewater against external heavy metal shock and provides useful insights into enhancing the application of BESs in future water treatment.
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Affiliation(s)
- Jiexuan Cai
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Na Yu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Fengyi Guan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xixi Cai
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Rui Hou
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yong Yuan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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Akouibaa A, Masrour R, Benhamou M, Derouiche A. Thermoplasmonics Decontamination of Respirators Face Masks Using Silver Nanoparticles: A New Weapon in the Fight Against COVID-19 Pandemic. PLASMONICS (NORWELL, MASS.) 2022; 17:2307-2322. [PMID: 36276844 PMCID: PMC9580457 DOI: 10.1007/s11468-022-01718-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
The current COVID-19 pandemic has resulted in an urgent need for methods to decontaminate respirators masks for reuse while keeping them intact and functional. The severe shortage of professional masks such as N95 and FFP2 has necessitated their reuse over long periods. A very promising method is the pasteurization of these masks by thermoplasmonic heat generated by plasmonics nanoparticles when they are irradiated by light. Under illumination at its plasmonic resonance, a metal nanoparticle features enhanced light absorption, turning it into an ideal nano-source of heat, remotely controllable using light. In this work, we propose a numerical study based on the finite element method (FEM) of the thermoplasmonic properties of silver nanoparticles (AgNPs) decorating polypropylene (PP) fibers which is a basic material for the manufacture of these masks. The surface plasmon resonance (SPR) of these nanostructures was investigated through the computation of the complex effective dielectric permittivity and the absorption cross section in the near UV-visible (NUV-Vis) range. First, the SPR characteristics of AgNPs for different morphologies are determined from the absorption spectra, including the SPR-peak position λmax and the electric field enhancement. Second, we determine the power absorbed by an individual AgNP of different morphologies. From this, we calculate the internal temperature increase of the particle at the plasmonic resonance. The last step is devoted to the determination of the temperature profile in the surrounding medium in order to better understand and design the plasmon-assisted heating processes at the nanometric scale.
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Affiliation(s)
- Abdelilah Akouibaa
- LPPSMM, Physics Department, Faculty of Sciences Ben M’sik, Hassan II University Casablanca, P.O. Box 7955, Casablanca, Morocco
| | - Rachid Masrour
- Laboratory of Solid Physics, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Box 1796, Fez, Morocco
| | - Mabrouk Benhamou
- Dynamics of Complex Systems Laboratory, Physics Department, Faculty of Sciences, Moulay Ismail University, P.O. Box 11201, Meknes, Morocco
| | - Abdelali Derouiche
- LPPSMM, Physics Department, Faculty of Sciences Ben M’sik, Hassan II University Casablanca, P.O. Box 7955, Casablanca, Morocco
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Truu M, Ligi T, Nõlvak H, Peeb A, Tiirik K, Devarajan AK, Oopkaup K, Kasemets K, Kõiv-Vainik M, Kasak K, Truu J. Impact of synthetic silver nanoparticles on the biofilm microbial communities and wastewater treatment efficiency in experimental hybrid filter system treating municipal wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129721. [PMID: 35963093 DOI: 10.1016/j.jhazmat.2022.129721] [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: 05/18/2022] [Revised: 07/22/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Silver nanoparticles (AgNPs) threaten human and ecosystem health, and are among the most widely used engineered nanomaterials that reach wastewater during production, usage, and disposal phases. This study evaluated the effect of a 100-fold increase in collargol (protein-coated AgNP) and Ag+ ions concentrations in municipal wastewater on the microbial community composition of the filter material biofilms (FMB) and the purification efficiency of the hybrid treatment system consisting of vertical (VF) and horizontal (HF) subsurface flow filters. We found that increased amounts of collargol and AgNO3 in wastewater had a modest effect on the prokaryotic community composition in FMB and did not significantly affect the performance of the studied system. Regardless of how Ag was introduced, 99.9% of it was removed by the system. AgNPs and AgNO3 concentrations did not significantly affect the purification efficiency of the system. AgNO3 induced a higher increase in the genetic potential of certain Ag resistance mechanisms in VFs than collargol; however, the increase in Ag resistance potential was similar for both substances in HF. Hence, the microbial community composition in biofilms of vertical and horizontal flow filters is largely resistant, resilient, or functionally redundant in response to AgNPs addition in the form of collargol.
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Affiliation(s)
- Marika Truu
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Teele Ligi
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Hiie Nõlvak
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Angela Peeb
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Kertu Tiirik
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Arun Kumar Devarajan
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Kristjan Oopkaup
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | - Margit Kõiv-Vainik
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia.
| | - Kuno Kasak
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia.
| | - Jaak Truu
- Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
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Krutyakov YA, Khina AG. Bacterial Resistance to Nanosilver: Molecular Mechanisms and Possible Ways to Overcome them. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822050106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Synthesis, characterization, in vitro antibacterial, and anticancer studies of Ag(I)-N-heterocyclic carbene (NHC) complexes. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Silver nanoparticle effect on Salmonella enterica isolated from Northern West Egypt food, poultry, and calves. Appl Microbiol Biotechnol 2022; 106:5701-5713. [PMID: 35945362 PMCID: PMC9418292 DOI: 10.1007/s00253-022-12102-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/11/2022] [Accepted: 07/23/2022] [Indexed: 11/03/2022]
Abstract
A total no. of 65 Salmonella enterica isolates recovered from food samples, feces of diarrheic calves, poultry, and hospital patient in large five cities at Northern West Egypt were obtained from the Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt. The 65 Salmonella enterica isolates had the invA gene were grouped into 11 Salmonella enterica serovars with dominance of S. Enteritidis and S. Kentucky serovars. Their resistance pattern were characterized by using 18 antibiotics from different classes. Approximately 80% of the isolates were multidrug resistant (MDR). Enterobacterial repetitive intergenic consequences polymerase chain reaction (ERIC-PCR) typing of 7 strains of S. Enteritidis showed 5 clusters with dissimilarity 25%. S. Enteritidis clusters in 2 main groups A and B. Group A have 2 human strain (HE2 and HE3) and one food origin (FE7) with a similarity 99%. Group B divided into B1 (FE2) and B2 (FE3) with a similarity ratio ≥ 93%, while ERIC-PCR analysis of 5 strains of S. Kentucky revealed 4 ERIC types, clustered in 2 main groups A and B with similarity 75%. We studied the effect of silver nanoparticles (Ag-NPs) on 10 antibiotic resistant strains of S. Enteritidis and S. Kentucky. The broth microdilution minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were detected. Evaluation of the affection using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed different ratios of Ag-NPs and microorganism as well as at different contact time ended finally with morphological alteration of the bacteria. We submitted new method in vivo to explore the activity of nanosilver in chicken. KEY POINTS: • Importance of ERIC-PCR to determine the relatedness between Salmonella isolates. • Effect of silver nanoparticles to confront the antibacterial resistance. • Studying the effect of silver nanoparticles in vivo on infected chicken with Salmonella.
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Xin X, Qi C, Xu L, Gao Q, Liu X. Green synthesis of silver nanoparticles and their antibacterial effects. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.941240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Antibacterial resistance is by far one of the greatest challenges to global health. Many pharmaceutical or material strategies have been explored to overcome this dilemma. Of these, silver nanoparticles (AgNPs) are known to have a non-specific antibacterial mechanism that renders it difficult to engender silver-resistant bacteria, enabling them to be more powerful antibacterial agents than conventional antibiotics. AgNPs have shown promising antibacterial effects in both Gram-positive and Gram-negative bacteria. The aim of this review is to summarize the green synthesis of AgNPs as antibacterial agents, while other AgNPs-related insights (e.g., antibacterial mechanisms, potential toxicity, and medical applications) are also reviewed.
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Jia B, Zhang Z, Zhuang Y, Yang H, Han Y, Wu Q, Jia X, Yin Y, Qu X, Zheng Y, Dai K. High-strength biodegradable zinc alloy implants with antibacterial and osteogenic properties for the treatment of MRSA-induced rat osteomyelitis. Biomaterials 2022; 287:121663. [PMID: 35810539 DOI: 10.1016/j.biomaterials.2022.121663] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/02/2022]
Abstract
Implant-related infections caused by drug-resistant bacteria remain a major challenge faced by orthopedic surgeons. Furthermore, ideal prevention and treatment methods are lacking in clinical practice. Here, based on the antibacterial and osteogenic properties of Zn alloys, Ag and Li were selected as alloying elements to prepare biodegradable Zn-Li-Ag ternary alloys. Li and Ag addition improved the mechanical properties of Zn-Li-Ag alloys. The Zn-0.8Li-0.5Ag alloy exhibited the highest ultimate tensile strength (>530 MPa). Zn-Li-Ag alloys showed strong bactericidal effects on methicillin-resistant Staphylococcus aureus (MRSA) in vitro. RNA sequencing revealed two MRSA-killing mechanisms exhibited by the Zn-0.8Li-0.5Ag alloy: cellular metabolism disturbance and induction of reactive oxygen species production. To verify that the therapeutic potential of the Zn-0.8Li-0.5Ag alloy is greater than that of Ti intramedullary nails, X-ray, micro-computed tomography, microbiological, and histological analyses were conducted in a rat femoral model of MRSA-induced osteomyelitis. Treatment with Zn-0.8Li-0.5Ag alloy implants resulted in remarkable infection control and favorable bone retention. The in vivo safety of this ternary alloy was confirmed by evaluating vital organ functions and pathological morphologies. We suggest that, with its good antibacterial and osteogenic properties, Zn-0.8Li-0.5Ag alloy can serve as an orthopedic implant material to prevent and treat orthopedic implant-related infections.
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Affiliation(s)
- Bo Jia
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, 200011, China; Department of Bone and Joint Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Zechuan Zhang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Yifu Zhuang
- Trauma Center, Department of Orthopaedics and Traumatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai, 201620, China
| | - Hongtao Yang
- School of Engineering Medicine, Beihang University, Beijing, 100191, China
| | - Yu Han
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, 200011, China
| | - Qiang Wu
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, 200011, China
| | - Xiufeng Jia
- Department of Orthopaedic Surgery, Wudi People's Hospital, Binzhou, 251900, China
| | - Yanhui Yin
- School of Economics and Trade, Shandong Management University, Jinan, 250357, China
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
| | - Kerong Dai
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, 200011, China.
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Crystal structure of the Escherichia coli CusS kinase core. J Struct Biol 2022; 214:107883. [PMID: 35907487 DOI: 10.1016/j.jsb.2022.107883] [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: 05/06/2022] [Revised: 07/07/2022] [Accepted: 07/23/2022] [Indexed: 10/16/2022]
Abstract
The CusS histidine kinase is a member of Escherichia coli two-component signal transduction system, engaged in a response to copper ions excess in the cell periplasm. The periplasmic sensor domain of CusS binds the free copper ions and the CusS kinase core phosphorylates the cognate CusR which regulates transcription of the efflux pomp CusCBA. A small amount of copper ions is indispensable for the aerobic cell metabolism. Nonetheless, its excess in the cytoplasm generates damaging and reactive hydroxyl radicals. For that reason, understanding the bacterial copper sensing mechanisms can contribute to reducing bacterial copper-resistance and developing bactericidal copper-based materials. The crystal structure of the CusS kinase core was solved at the resolution of 1.4 Å. The cytoplasmic catalytic core domains formed a homodimer. Based on the obtained structure, the intramolecular and intermolecular interactions crucial for the mechanism of CusS autophosphorylation were described.
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Microbial silver resistance mechanisms: recent developments. World J Microbiol Biotechnol 2022; 38:158. [PMID: 35821348 DOI: 10.1007/s11274-022-03341-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/19/2022] [Indexed: 01/12/2023]
Abstract
In this mini-review, after a brief introduction into the widespread antimicrobial use of silver ions and nanoparticles against bacteria, fungi and viruses, the toxicity of silver compounds and the molecular mechanisms of microbial silver resistance are discussed, including recent studies on bacteria and fungi. The similarities and differences between silver ions and silver nanoparticles as antimicrobial agents are also mentioned. Regarding bacterial ionic silver resistance, the roles of the sil operon, silver cation efflux proteins, and copper-silver efflux systems are explained. The importance of bacterially produced exopolysaccharides as a physiological (biofilm) defense mechanism against silver nanoparticles is also emphasized. Regarding fungal silver resistance, the roles of metallothioneins, copper-transporting P-type ATPases and cell wall are discussed. Recent evolutionary engineering (adaptive laboratory evolution) studies are also discussed which revealed that silver resistance can evolve rapidly in bacteria and fungi. The cross-resistance observed between silver resistance and resistance to other heavy metals and antibiotics in bacteria and fungi is also explained as a clinically and environmentally important issue. The use of silver against bacterial and fungal biofilm formation is also discussed. Finally, the antiviral effects of silver and the use of silver nanoparticles against SARS-CoV-2 and other viruses are mentioned. To conclude, silver compounds are becoming increasingly important as antimicrobial agents, and their widespread use necessitates detailed understanding of microbial silver response and resistance mechanisms, as well as the ecological effects of silver compounds. Figure created with BioRender.com.
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Malik MA, Batterjee MG, Kamli MR, Alzahrani KA, Danish EY, Nabi A. Polyphenol-Capped Biogenic Synthesis of Noble Metallic Silver Nanoparticles for Antifungal Activity against Candida auris. J Fungi (Basel) 2022; 8:jof8060639. [PMID: 35736122 PMCID: PMC9225145 DOI: 10.3390/jof8060639] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 01/27/2023] Open
Abstract
In terms of reduced toxicity, the biologically inspired green synthesis of nanoparticles has emerged as a promising alternative to chemically fabricated nanoparticles. The use of a highly stable, biocompatible, and environmentally friendly aqueous extract of Cynara cardunculus as a reducing and capping agent in this study demonstrated the possibility of green manufacturing of silver nanoparticles (CC-AgNPs). UV-visible spectroscopy validated the development of CC-AgNPs, indicating the surface plasmon resonance (SPR) λmax band at 438 nm. The band gap of CC-AgNPs was found to be 2.26 eV. SEM and TEM analysis examined the surface morphology of CC-AgNPs, and micrographs revealed that the nanoparticles were spherical. The crystallinity, crystallite size, and phase purity of as-prepared nanoparticles were confirmed using XRD analysis, and it was confirmed that the CC-AgNPs were a face-centered cubic (fcc) crystalline-structured material. Furthermore, the role of active functional groups involved in the reduction and surface capping of CC-AgNPs was revealed using the Fourier transform infrared (FTIR) spectroscopic technique. CC-AgNPs were mostly spherical and monodispersed, with an average size of 26.89 nm, and were shown to be stable for a longer period without any noticeable change at room temperature. Further, we checked the antifungal mechanism of CC-AgNPs against C. auris MRL6057. The minimum inhibitory concentrations (MIC) and minimum fungicidal concentrations (MFC) were 50.0 µg/mL and 100.0 µg/mL respectively. The cell count and viability assay confirmed the fungicidal potential of CC-AgNPs. Further, the analysis showed that CC-AgNPs could induce apoptosis and G2/M phase cell cycle arrest in C. auris MRL6057. Our results also suggest that the CC-AgNPs were responsible for the induction of mitochondrial toxicity. TUNEL assay results revealed that higher concentrations of CC-AgNPs could cause DNA fragmentation. Therefore, the present study suggested that CC-AgNPs hold the capacity for antifungal drug development against C. auris infections.
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Affiliation(s)
- Maqsood Ahmad Malik
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.G.B.); (K.A.A.); (E.Y.D.)
- Correspondence:
| | - Maha G. Batterjee
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.G.B.); (K.A.A.); (E.Y.D.)
| | - Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Khalid Ahmed Alzahrani
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.G.B.); (K.A.A.); (E.Y.D.)
| | - Ekram Y. Danish
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.G.B.); (K.A.A.); (E.Y.D.)
| | - Arshid Nabi
- Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia;
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Li WW, Zheng MY, Shang YH, Xu JQ, Zhang ZT, Zheng HN, Li XP, Weng AT, Feng LY, Liu L. Synthesis, characterization, thermal behavior, and antitumor activities of an Ag(I) complex based on 4-(2-hydroxyphenyl)-2-methylpyrimidine. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221103541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new Ag(I) coordination complex, Ag(C11H10N2O)2·NO3 (C11H10N2O = 4-(2-hydroxyphenyl)-2-methylpyrimidine) is successfully synthesized and characterized by infrared spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis. This complex features a three-dimensional framework consisting of hydrogen bonds, π–π stacking interactions, coordination interactions, and electrostatic interactions. Moreover, the thermal stability and non-isothermal thermal decomposition reaction kinetics of the complex are well investigated by the methods of Kissinger and Ozawa. Finally, the antitumor ability of the complex is evaluated against human lung cancer cells (NCI-H460), human hepatocellular cancer cells (HepG2), and human breast cancer cells (MCF7). The complex exhibits potent antitumor activities against HepG2 and MCF7 cancer cells.
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Affiliation(s)
- Wu-Wu Li
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Min-Yan Zheng
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Yong-Hui Shang
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Jin-Qiong Xu
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Zun-Ting Zhang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, P.R. China
| | - Hao-Nan Zheng
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Xiao-Peng Li
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - A-Tong Weng
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Ling-Ying Feng
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Lu Liu
- College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
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45
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Zhao G, Zhou H, Jin G, Jin B, Geng S, Luo Z, Ge Z, Xu F. Rational Design of Electrically Conductive Biomaterials toward Excitable Tissues Regeneration. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Chitichotpanya C, Khwanmuang P, Yamprayoonswat W, Porntheeraphat S, Jongkaewwattana A, Chitichotpanya P. Potent environmental-friendly virucidal medical textiles against coronavirus to combat infections during the COVID-19 pandemic. JOURNAL OF INDUSTRIAL TEXTILES 2022; 51:6996S-7013S. [PMID: 38603065 PMCID: PMC9024151 DOI: 10.1177/15280837221094649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
The sudden outburst of Coronavirus disease 19 or COVID-19 has raised serious awareness about viral contamination on the environment, which is one of the major causes of the disease. Transmission via contaminated surfaces has been recognized as a significant route for spreading the virus. To suppress and control the spread of SARS-CoV-2, potent virucidal finishing agents for decontamination of medical textiles are urgently required. In this study, an environmental-friendly, economical, non-toxic, and practical finishing on medical textiles with potent virucidal activity was proposed with the combined concepts of a new green synthesis of TiO2@Ag core-shell nanostructures using ascorbic acid reduction and UV-curing process. In order to evaluate efficiency of virucidal activity, effects of the amount of TiO2@Ag NPs and contact time were determined against the coronavirus following ISO 18184:2019 standard. The finishing agent exhibited an excellent 99.9% virucidal efficacy. The stability of virucidal activity and mechanical properties were determined under repeated washing. The finished fabrics had the ability to retain their virucidal activity and tensile strength through 20 washes. The results suggested that the finishing agent had great potential as a potent and non-toxic virucide against the coronavirus for medical textile applications.
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Affiliation(s)
- Chayanisa Chitichotpanya
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center for Surface Science and Engineering, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Phasinee Khwanmuang
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Wariya Yamprayoonswat
- Digital Agriculture Technology Research Team (DAT), Deputy Executive Director Research and Development Intelligent Systems and Networks (ITSN), National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Supanit Porntheeraphat
- Digital Agriculture Technology Research Team (DAT), Deputy Executive Director Research and Development Intelligent Systems and Networks (ITSN), National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Anan Jongkaewwattana
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Pisutsaran Chitichotpanya
- Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Patumthani, Thailand
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47
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Mahajanakatti AB, Deepak TS, Achar RR, Pradeep S, Prasad SK, Narayanappa R, Bhaskar D, Shetty S, Melappa G, Chandramouli L, Mazumdar S, Silina E, Stupin V, Srinivasa C, Shivamallu C, Kollur SP. Nanoconjugate Synthesis of Elaeocarpus ganitrus and the Assessment of Its Antimicrobial and Antiproliferative Properties. Molecules 2022; 27:molecules27082442. [PMID: 35458641 PMCID: PMC9029827 DOI: 10.3390/molecules27082442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 11/16/2022] Open
Abstract
Cancer is one of the leading causes of death worldwide, accountable for a total of 10 million deaths in the year 2020, according to GLOBOCAN 2020. The advancements in the field of cancer research indicate the need for direction towards the development of new drug candidates that are instrumental in a tumour-specific action. The pool of natural compounds proves to be a promising avenue for the discovery of groundbreaking cancer therapeutics. Elaeocarpus ganitrus (Rudraksha) is known to possess antioxidant properties and after a thorough review of literature, it was speculated to possess significant biomedical potential. Green synthesis of nanoparticles is an environmentally friendly approach intended to eliminate toxic waste and reduce energy consumption. This approach was reported for the synthesis of silver nanoparticles from two different solvent extracts: aqueous and methanolic. These were characterized by biophysical and spectroscopic techniques, namely, UV-Visible Spectroscopy, FTIR, XRD, EDX, DLS, SEM, and GC-MS. The results showed that the nanoconjugates were spherical in geometry. Further, the assessment of antibacterial, antifungal, and antiproliferative activities was conducted which yielded results that were qualitatively positive at the nanoscale. The nanoconjugates were also evaluated for their anticancer properties using a standard MTT Assay. The interactions between the phytochemicals (ligands) and selected cancer receptors were also visualized in silico using the PyRx tool for molecular docking.
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Affiliation(s)
- Arpitha Badarinath Mahajanakatti
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | | | - Raghu Ram Achar
- Department of Biochemistry, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India;
| | - Sushma Pradeep
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India; (S.P.); (S.K.P.)
| | - Shashanka K Prasad
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India; (S.P.); (S.K.P.)
| | - Rajeswari Narayanappa
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Deepthi Bhaskar
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Sushravya Shetty
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Govindappa Melappa
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Lavanya Chandramouli
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Sanjukta Mazumdar
- Department of Biotechnology, Dayananda Sagar College of Engineering, (Affiliated to VTU, Belagavi), Shavige Malleshwara Hills, Bengaluru 560078, Karnataka, India; (A.B.M.); (R.N.); (D.B.); (S.S.); (G.M.); (L.C.); (S.M.)
| | - Ekaterina Silina
- Department of Human Pathology, Institute of Biodesign and Modeling of Complex Systems, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
| | - Victor Stupin
- Department of Hospital Surgery, N.I. Pirogov Russian National Research Medical University (RNRMU), 117997 Moscow, Russia;
| | - Chandrashekar Srinivasa
- Department of Biotechnology, Davangere University, Shivagangotri, Davangere 577002, Karnataka, India
- Correspondence: (C.S.); (C.S.); (S.P.K.)
| | - Chandan Shivamallu
- Department of Biochemistry, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India;
- Correspondence: (C.S.); (C.S.); (S.P.K.)
| | - Shiva Prasad Kollur
- School of Agriculture, Geography, Environment, Ocean and Natural Sciences, Laucala Campus, The University of the South Pacific, Suva, Fiji
- Department of Sciences, Amrita School of Arts and Sciences, Campus, Mysuru, Amrita Vishwa Vidyapeetham, Mysuru 570026, Karnataka, India
- Correspondence: (C.S.); (C.S.); (S.P.K.)
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48
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Chen H, Qiu C, Jiang Y, Liao X, Wu D, Shen M, Ding T. Silver nanoparticles on UiO-66 (Zr) metal-organic frameworks for water disinfection application. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.11.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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49
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Stalin Dhas T, Sowmiya P, Parthasarathy K, Natarajan A, Narendrakumar G, Kumar R, Samrot AV, Riyaz SUM, Ganesh VK, Karthick V, Rajasekar A. In vitro antibacterial activity of biosynthesized silver nanoparticles against gram negative bacteria. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2034014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Tharmathass Stalin Dhas
- Centre for Ocean Research (DST – FIST Sponsored Centre), MoES - Earth Science & Technology Cell, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Prasad Sowmiya
- Centre for Ocean Research (DST – FIST Sponsored Centre), MoES - Earth Science & Technology Cell, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Krupakar Parthasarathy
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Anandakumar Natarajan
- Department of Education, The Gandhigram Rural Institute-Deemed to be University, Gandhigram, Dindigul, Tamil Nadu, India
| | - Gopakumaran Narendrakumar
- Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Ramesh Kumar
- Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Antony Vincent Samrot
- School of Biosciences, Faculty of Medicine, Biosciences and Nursing, MAHSA University, Jalan SP2, Bandar Saujana Putra, Jenjarom, Selangor, Malaysia
| | | | - Vijayakumar Kumar Ganesh
- Centre for Ocean Research (DST – FIST Sponsored Centre), MoES - Earth Science & Technology Cell, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Velu Karthick
- Centre for Ocean Research (DST – FIST Sponsored Centre), MoES - Earth Science & Technology Cell, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Arulaih Rajasekar
- Department of Biotechnology, Thiruvalluvar University, Vellore, Tamil Nadu, India
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50
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Altay A, Caglar S, Caglar B. Silver(I) complexes containing diclofenac and niflumic acid induce apoptosis in human-derived cancer cell lines. Arch Physiol Biochem 2022; 128:69-79. [PMID: 31516039 DOI: 10.1080/13813455.2019.1662454] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We investigated the anti-cancer activity of [Ag(μ-dicl)]n 1 and [AgH(nif)2] 2 complexes against human cancer cell lines (MCF-7, HT-29, and HepG2) and mouse fibroblast (3T3-L1) cell line. Anti-proliferative activity was monitored by XTT cell viability and LDH leakage assays. Cell death mode was evaluated by multi-caspase activity, annexin V cytofluorimetric, MMP, cell cycle arrest, and ROS generation assays. Antioxidant capacity was evaluated on SOD, GPx, GR, and CAT enzymes. The XTT and LDH assay results showed that both complexes exhibited strong cytotoxicity against the tested cancer cell lines. The apoptotic mechanisms of the complexes were demonstrated by loss of MMP and increase in phosphatidylserine translocation, sub-G1 phase, and multi-caspase activity. Besides, both complexes induced the oxidative stress in MCF-7 cells by decreasing the activity of GPx, GR, and CAT enzymes. In conclusion, both Ag(I) complexes, especially 1, warrant for further in vivo evaluation as a new alternative in cancer treatment.HighlightsAg(I) complexes inhibited cell proliferation and induced LDH leakage in human cancer cell lines.Ag(I) complexes induced apoptosis through MMP disruption and ROS generation.Ag(I) complexes mimicked the multi-caspase activity.Ag(I) complexes increased the accumulation of sub-G1 phase.Ag(I) complexes inhibited the activity of antioxidant system enzymes.
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Affiliation(s)
- Ahmet Altay
- Department of Chemistry, Faculty of Arts and Science, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Sema Caglar
- Department of Chemistry, Faculty of Arts and Science, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Bulent Caglar
- Department of Chemistry, Faculty of Arts and Science, Erzincan Binali Yıldırım University, Erzincan, Turkey
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