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Tripathi A, Park J, Pho T, Champion JA. Dual Antibacterial Properties of Copper-Coated Nanotextured Stainless Steel. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311546. [PMID: 38766975 DOI: 10.1002/smll.202311546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 05/07/2024] [Indexed: 05/22/2024]
Abstract
Bacterial adhesion to stainless steel, an alloy commonly used in shared settings, numerous medical devices, and food and beverage sectors, can give rise to serious infections, ultimately leading to morbidity, mortality, and significant healthcare expenses. In this study, Cu-coated nanotextured stainless steel (nSS) fabrication have been demonstrated using electrochemical technique and its potential as an antibiotic-free biocidal surface against Gram-positive and negative bacteria. As nanotexture and Cu combine for dual methods of killing, this material should not contribute to drug-resistant bacteria as antibiotic use does. This approach involves applying a Cu coating on nanotextured stainless steel, resulting in an antibacterial activity within 30 min. Comprehensive characterization of the surface revealing that the Cu coating consists of metallic Cu and oxidized states (Cu2+ and Cu+), has been performed by this study. Cu-coated nSS induces a remarkable reduction of 97% in Gram-negative Escherichia coli and 99% Gram-positive Staphylococcus epidermidis bacteria. This material has potential to be used to create effective, scalable, and sustainable solutions to prevent bacterial infections caused by surface contamination without contributing to antibiotic resistance.
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Affiliation(s)
- Anuja Tripathi
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Jaeyoung Park
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Thomas Pho
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Julie A Champion
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
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2
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Elmehrath S, Ahsan K, Munawar N, Alzamly A, Nguyen HL, Greish Y. Antibacterial efficacy of copper-based metal-organic frameworks against Escherichia coli and Lactobacillus. RSC Adv 2024; 14:15821-15831. [PMID: 38752161 PMCID: PMC11095089 DOI: 10.1039/d4ra01241k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024] Open
Abstract
The widespread and excessive use of antimicrobial drugs has resulted in a concerning rise in bacterial resistance, leading to a risk of untreatable infections. The aim of this study was to formulate a robust and efficient antibacterial treatment to address this challenge. Previous work focused on the effectiveness of the Cu-BTC metal-organic framework (MOF; BTC stands for 1,3,5-benzenetricarboxylate) in combatting various bacterial strains. Herein, we compare the antibacterial properties of Cu-BTC with our newly designed Cu-GA MOF, consisting of copper ions bridged by deprotonated gallate ligands (H2gal2-), against Escherichia coli (E. coli) and Lactobacillus bacteria. Cu-GA was synthesized hydrothermally from copper salt and naturally derived gallic acid (H4gal) and characterized for antibacterial evaluation. The gradual breakdown of Cu(H2gal) resulted in a significant antibacterial effect that is due to the release of copper ions and gallate ligands from the framework. Both copper MOFs were nontoxic to bacteria at low concentrations and growth was completely inhibited at high concentrations when treated with Cu-BTC (1500 μg for E. coli and 1700 μg for Lactobacillus) and Cu-GA (2000 μg for both bacterial strains). Furthermore, our agarose gel electrophoresis results indicate that both MOFs could disrupt bacterial cell membranes, hindering the synthesis of DNA. These findings confirm the antibacterial properties of Cu-BTC and the successful internalization of Cu2+ ions and gallic acid by bacteria from the Cu-GA MOF framework, suggesting the potential for a sustained and effective therapeutic approach against pathogenic microorganisms.
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Affiliation(s)
- Sandy Elmehrath
- Department of Chemistry, United Arab Emirates University Al-Ain 15551 UAE
- Wyss Institute at Harvard University Boston MA 02215 USA
| | - Khansa Ahsan
- Department of Chemistry, United Arab Emirates University Al-Ain 15551 UAE
| | - Nayla Munawar
- Department of Chemistry, United Arab Emirates University Al-Ain 15551 UAE
| | - Ahmed Alzamly
- Department of Chemistry, United Arab Emirates University Al-Ain 15551 UAE
| | - Ha L Nguyen
- Department of Chemistry, University of California Berkeley Berkeley CA 94720 USA
| | - Yaser Greish
- Department of Chemistry, United Arab Emirates University Al-Ain 15551 UAE
- Zayed Centre for Health Sciences, United Arab Emirates University Al-Ain 15551 UAE
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3
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Wang Z, Zhao L, Jing H, Song G, Li J. Synthesis, Structure and Antibacterial Activity of Two Novel Coordination Polymers Based on N, N'-bis(4-carbozvlbenzvl)-4-aminotoluene and Heterocyclic Ligand against S. aureus. Molecules 2024; 29:1990. [PMID: 38731481 PMCID: PMC11085063 DOI: 10.3390/molecules29091990] [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: 03/21/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
As the use of antibiotics increases, the increasing resistance of bacteria is the main reason for the reduced efficiency of antibacterial drugs, making the research of new antibacterial materials become new hot spot. In this article, two novel coordination polymers (CPs), namely, [Cd2(L)2(bibp)2]n (1) and [Ni(L)(bib)]n (2), where H2L = N,N'-bis(4-carbozvlbenzvl)-4-aminotoluene, bibp = 4,4'-bis(imidazol-1-yl)biphenyl, and bib = 1,3-bis(1-imidazoly)benzene, have been synthesized under solvothermal and hydrothermal condition. Structural clarification was performed through infrared spectrum and single-crystal X-ray diffraction analysis, while thermal analysis and XRD technology were used for the performance assessment of compounds 1 and 2. In addition, antibacterial performance experiments showed that compounds 1 and 2 have certain selectivity in their antibacterial properties and have good antibacterial properties against S. aureus. As the concentration of the compound increases, the inhibitory effect gradually strengthens, and when the concentration of the compound reaches 500 μg/mL and 400 μg/mL, the concentration of the S. aureus solution no longer increases and has been completely inhibited.
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Affiliation(s)
| | - Lun Zhao
- College of Chemistry, Changchun Normal University, Changchun 130032, China; (Z.W.); (H.J.); (G.S.); (J.L.)
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4
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Lorenzetti L, Brandolini M, Gatti G, Bernardi E, Chiavari C, Gualandi P, Galliani G, Sambri V, Martini C. Cu-based thin rolled foils: relationship among alloy composition, micromechanical and antiviral properties against SARS-CoV-2. Heliyon 2024; 10:e28238. [PMID: 38560697 PMCID: PMC10979200 DOI: 10.1016/j.heliyon.2024.e28238] [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: 03/08/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/04/2024] Open
Abstract
The healthcare-associated infections (HAIs) and pandemics caused by multidrug-resistant (MDR) and new-generation pathogens threaten the whole world community. Cu and its alloys have been attracting widespread interest as anti-contamination materials due to the rapid inactivation of MDR-superbugs and viruses. Applying thin Cu-based foils on pre-existing surfaces in hygiene-sensitive areas represents a quick, simple, cost-effective self-sanitising practice. However, the influence of chemical composition and microstructure should be deeply investigated when evaluating the antimicrobial capability and durability of Cu-based materials. The effect of composition on micromechanical and antiviral properties was investigated by comparing Cu15Zn and Cu18Ni20Zn (foil thickness from 13 to 27 μm) with Phosphorous High-Conductivity (PHC) Cu. The influence of recrystallisation annealing of PHC Cu was also investigated. Microstructural characterisation was carried out by optical (OM) and scanning electron (FEG-SEM) microscopy, Energy-dispersive Spectroscopy (EDS) and Electron-Backscattered Diffraction (EBSD). The micromechanical behaviour was assessed by microhardness, microscale abrasion and scratch tests. Cu-based foils were exposed to SARS-CoV-2 for different time points in quasi-dry conditions (artificial sweat solution), evaluating their antiviral capability by quantitative Reverse-Transcriptase Polymerase Chain Reaction (qRT-PCR). Surface morphology, contact angle measurements and Cu release were measured. All Cu-based surfaces completely inactivated SARS-CoV-2 in 10 min: pure Cu was the best option regarding antiviral efficiency, while Cu15Zn showed the best trade-off between micromechanical and antiviral properties.
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Affiliation(s)
- L. Lorenzetti
- Dept. Industrial Engineering (DIN), University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - M. Brandolini
- Unit of Microbiology, The Great Romagna Hub Laboratory, Piazza della Liberazione 60, 47522 Pievesestina, Italy
- Dept. Medical and Surgical Sciences (DIMEC), University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - G. Gatti
- Unit of Microbiology, The Great Romagna Hub Laboratory, Piazza della Liberazione 60, 47522 Pievesestina, Italy
- Dept. Medical and Surgical Sciences (DIMEC), University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - E. Bernardi
- Dept. Industrial Chemistry "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
| | - C. Chiavari
- Dept. Cultural Heritage (DBC), University of Bologna, Via degli Ariani 1, 48121 Ravenna, Italy
| | - P. Gualandi
- Pietro Galliani SpA, Via Molino Malpasso 65, 40038 Vergato (BO), Italy
| | - G. Galliani
- Pietro Galliani SpA, Via Molino Malpasso 65, 40038 Vergato (BO), Italy
| | - V. Sambri
- Unit of Microbiology, The Great Romagna Hub Laboratory, Piazza della Liberazione 60, 47522 Pievesestina, Italy
- Dept. Medical and Surgical Sciences (DIMEC), University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - C. Martini
- Dept. Industrial Engineering (DIN), University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
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Yadav AK, Tripathi H, Rajput S, Singh P, Dubey AK, Kumar K, Chawla R, Rath C. Drug kinetics and antimicrobial properties of quaternary bioactive glasses 81S(81SiO 2-(16-x)CaO-2P 2O 5-1Na 2O-xMgO); an in-vitro study. BIOMATERIALS ADVANCES 2024; 157:213729. [PMID: 38101068 DOI: 10.1016/j.bioadv.2023.213729] [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: 04/24/2023] [Revised: 11/20/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Bioactive glasses have recently been attracted to meet the challenge in bone tissue regeneration, repair, healing, dental implants, etc. Among the conventional bio-glasses, a novel quaternary mesoporous nano bio-glass with composition 81S(81SiO2-(16-x)CaO-2P2O5-1Na2O-xMgO) (x = 0, 1.6, 2.4, 4 and 8 mol%) employing Stober's method has been explored for examining the above potential application through in-vitro SBF assay, MTT assay, antimicrobial activity and drug loading and release ability. With increasing the MgO concentration up to 4 mol%, from in-vitro SBF assay, we observe that HAp layer develops on the surface of the nBGs confirmed from XRD, FTIR and FESEM. MTT assay using MG-63 cells confirms the biocompatibility of the nBGs having cell viability >225 % for MGO_4 after 72 h which is more than the clinically used 45S5 bio-glass. We have observed cell viability of >125 % even after 168 h. Moreover, MGO_4 is found to restrict the growth of E. coli by 65 % while S. aureus by 75 %, confirming the antimicrobial activity. Despite an increase in the concentration of magnesium, nBGs are found to be non-toxic towards the RBCs up to 4 mol% of MgO while for 8 %, the hemolysis percentage is >6 % which is toxic. Being confirmed MGO_4 nBG as a bioactive material, various concentrations of drug (Dexamethasone (DEX)) loading and release kinetics are examined. We show that 80 % of loading in case of 10 mg-ml-1 and 70 % of cumulative release in 100 h. The mesoporous structure of MGO_4 having an average pore diameter of 5 nm and surface area of 216 m2 g-1 confirmed from BET supports the loading and release kinetics. We conclude that the quaternary MGO_4 nBG may be employed effectively for bone tissue regeneration due to its high biocompatibility, excellent in-vitro cell viability, antimicrobial response and protracted drug release.
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Affiliation(s)
- Akhilesh Kumar Yadav
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Himanshu Tripathi
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Sanjna Rajput
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Priya Singh
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Krishan Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ruchi Chawla
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Chandana Rath
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
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Mrozińska Z, Kudzin MH, Ponczek MB, Kaczmarek A, Król P, Lisiak-Kucińska A, Żyłła R, Walawska A. Biochemical Approach to Poly(Lactide)-Copper Composite-Impact on Blood Coagulation Processes. MATERIALS (BASEL, SWITZERLAND) 2024; 17:608. [PMID: 38591465 PMCID: PMC10856769 DOI: 10.3390/ma17030608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/02/2024] [Accepted: 01/22/2024] [Indexed: 04/10/2024]
Abstract
The paper presents the investigation of the biological properties of Poly(Lactide)-Copper composite material obtained by sputter deposition of copper onto Poly(lactide) melt-blown nonwoven fabrics. The functionalized composite material was subjected to microbial activity tests against colonies of Gram-positive (Staphylococcus aureus), Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria, Chaetomium globosum and Candida albicans fungal mold species and biochemical-hematological tests including the evaluation of the Activated Partial Thromboplastin Time, Prothrombin Time, Thrombin Time and electron microscopy fibrin network imaging. The substantial antimicrobial and antifungal activities of the Poly(Lactide)-Copper composite suggests potential applications as an antibacterial/antifungal material. The unmodified Poly(Lactide) fabric showed accelerated human blood plasma clotting in the intrinsic pathway, while copper plating abolished this effect. Unmodified PLA itself could be used for the preparation of wound dressing materials, accelerating coagulation in the case of hemorrhages, and its modifications with the use of various metals might be applied as new customized materials where blood coagulation process could be well controlled, yielding additional anti-pathogen effects.
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Affiliation(s)
- Zdzisława Mrozińska
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Marcin H. Kudzin
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Michał B. Ponczek
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Anna Kaczmarek
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Paulina Król
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Agnieszka Lisiak-Kucińska
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Renata Żyłła
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
| | - Anetta Walawska
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Lodz, Poland; (Z.M.); (A.K.); (P.K.); (A.L.-K.); (R.Ż.); (A.W.)
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7
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Jiang X, Lei L, Sun W, Wei Y, Han J, Zhong S, Yang X, Gou Z, Chen L. Bioceramic scaffolds with two-step internal/external modification of copper-containing polydopamine enhance antibacterial and alveolar bone regeneration capability. J Zhejiang Univ Sci B 2024; 25:65-82. [PMID: 38163667 PMCID: PMC10758211 DOI: 10.1631/jzus.b23d0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 04/28/2023] [Indexed: 01/03/2024]
Abstract
Magnesium-doped calcium silicate (CS) bioceramic scaffolds have unique advantages in mandibular defect repair; however, they lack antibacterial properties to cope with the complex oral microbiome. Herein, for the first time, the CS scaffold was functionally modified with a novel copper-containing polydopamine (PDA(Cu2+)) rapid deposition method, to construct internally modified (*P), externally modified (@PDA), and dually modified (*P@PDA) scaffolds. The morphology, degradation behavior, and mechanical properties of the obtained scaffolds were evaluated in vitro. The results showed that the CS*P@PDA had a unique micro-/nano-structural surface and appreciable mechanical resistance. During the prolonged immersion stage, the release of copper ions from the CS*P@PDA scaffolds was rapid in the early stage and exhibited long-term sustained release. The in vitro evaluation revealed that the release behavior of copper ions ascribed an excellent antibacterial effect to the CS*P@PDA, while the scaffolds retained good cytocompatibility with improved osteogenesis and angiogenesis effects. Finally, the PDA(Cu2+)-modified scaffolds showed effective early bone regeneration in a critical-size rabbit mandibular defect model. Overall, it was indicated that considerable antibacterial property along with the enhancement of alveolar bone regeneration can be imparted to the scaffold by the two-step PDA(Cu2+) modification, and the convenience and wide applicability of this technique make it a promising strategy to avoid bacterial infections on implants.
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Affiliation(s)
- Xiaojian Jiang
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Lihong Lei
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Weilian Sun
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Yingming Wei
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jiayin Han
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Shuaiqi Zhong
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Xianyan Yang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang‒California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China
| | - Zhongru Gou
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang‒California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China. ,
| | - Lili Chen
- Department of Oral Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
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8
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Mitchell AL, Lee SH, McEnroe DJ, Null EL, Sternquist DA, Hufziger KA, Rice BJ, Scrimshire A, Bingham PA, Gross TM. Antimicrobial Fe 2O 3-CuO-P 2O 5 glasses. Sci Rep 2023; 13:17472. [PMID: 37838823 PMCID: PMC10576775 DOI: 10.1038/s41598-023-44743-x] [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: 04/03/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023] Open
Abstract
Glasses with high antimicrobial efficacy were developed in the Fe2O3-CuO-P2O5 ternary system to mitigate fomite-mediated transmission of infectious diseases in high-risk settings such as hospitals, daycares, and nursing homes. Binary CuO-P2O5 glasses were not durable enough for use as high touch point articles, so Fe2O3 was added to the compositions to increase the chemical durability. The amount of Cu leachate decreased by at least 3 orders of magnitude when Fe2O3 was increased from 0 to 13.1 mol%. At the highest Fe2O3 contents and corresponding highest durability, the glass was no longer able to pass a test of antimicrobial efficacy with < 3 log kill compared to > 5 log kill for all other compositions. Ab-initio molecular dynamics simulations showed increasing bridging oxygen species at the expense of non-bridging oxygen species with the increase in Fe2O3 content, showing that the glasses exhibited increased chemical durability because they were more interconnected and structurally bound. Experimental results with glasses at fixed CuO and decreasing Fe2O3 confirmed that Fe2O3 content (not CuO) controlled the Cu release rate and, thus, the antimicrobial efficacy of the glasses. The significance of the oxidation state of the leached Cu was overwhelmed by the importance of the amount of Cu leachate.
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Affiliation(s)
| | - Sung Hoon Lee
- Corning Technology Center Korea, Corning Precision Materials Co., Ltd., 212 Tangjeong-ro, Asan, Chungcheongnam-do, 31454, Republic of Korea
| | - David J McEnroe
- Corning Incorporated, 1 Riverfront Plaza, Corning, NY, 14831, USA
| | - Eric L Null
- Corning Incorporated, 1 Riverfront Plaza, Corning, NY, 14831, USA
| | | | | | - Brian J Rice
- Corning Incorporated, 1 Riverfront Plaza, Corning, NY, 14831, USA
| | - Alex Scrimshire
- Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Sheffield, S1 1WB, UK
| | - Paul A Bingham
- Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Sheffield, S1 1WB, UK
| | - Timothy M Gross
- Corning Incorporated, 1 Riverfront Plaza, Corning, NY, 14831, USA
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9
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Han Y, Zhao L, Jing H, Song G, Wang Z, Li J, Yang Y. Application of a Metal Cobalt Based on 4,6-Bis(imidazol-1-yl)isophthalicacid Metal-Organic -Framework Materials in Photocatalytic CO 2 Reduction, Antibacterial, and Dye Adsorption. Polymers (Basel) 2023; 15:3848. [PMID: 37765700 PMCID: PMC10537682 DOI: 10.3390/polym15183848] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/28/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
In this paper, the reported MOF ([Co(bimip)(H2O)0.5]·0.5H2O) was employed in photocatalytic CO2 reduction, antibacterial, and dye adsorption experiments. The photocatalytic activity of the MOF for CO2 reduction was systematically investigated. The high average CO generation rate of 3421.59 μmol·g-1·h-1 after 12 h confirms the efficient photocatalytic CO2 reduction ability of the MOF. At the same time, the MOF can completely inhibit the growth of S. aureus and C. albicans within 24 h when its concentration reaches 400 μg/mL and 500 μg/mL, respectively. The MOF has an adsorption capacity for CR. The adsorption rate was 83.42% at 60 min, and the adsorption capacity of the MOF for CR reached 500.00 mg·g-1.
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Affiliation(s)
| | - Lun Zhao
- College of Chemistry, Changchun Normal University, Changchun 130032, China; (Y.H.); (H.J.); (G.S.); (Z.W.); (J.L.); (Y.Y.)
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10
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Yuan C, Miao Y, Chai Y, Zhang X, Dong X, Zhao Y. Highly Water-Stable Zinc Based Metal-Organic Framework: Antibacterial, Photocatalytic Degradation and Photoelectric Responses. Molecules 2023; 28:6662. [PMID: 37764438 PMCID: PMC10537607 DOI: 10.3390/molecules28186662] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
A reported water-stable Zn-MOF ([Zn(L)2(bpa)(H2O)2]·2H2O, H2L = 5-(2-cyanophenoxy) isophthalic acid has been prepared via a low-cost, general and efficient hydrothermal method. It is worth noting the structural features of Zn-MOF which exhibit the unsaturated metal site and the main non-covalent interactions including O⋯H, N⋯H and π-π stacking interactions, which lead to strong antibacterial and good tetracycline degradation ability. The average diameter of the Zn-MOF inhibition zone against Escherichia coli and Staphylococcus aureus was 12.22 mm and 10.10 mm, respectively. Further, the water-stable Zn-MOF can be employed as the effective photocatalyst for the photodegradation of tetracycline, achieving results of 67% within 50 min, and it has good cyclic stability. In addition, the photodegradation mechanism was studied using UV-vis diffuse reflection spectroscopy (UV-VIS DRS) and valence-band X-ray photoelectron spectroscopy (VB-XPS) combined with the ESR profile of Zn-MOF, which suggest that ·O2- is the main active species responsible for tetracycline photodegradation. Also, the photoelectric measurement results show that Zn-MOF has a good photocurrent generation performance under light. This provides us with a new perspective to investigate Zn-MOF materials as a suitable multifunctional platform for future environmental improvement applications.
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Affiliation(s)
- Congying Yuan
- College of Life Science, Luoyang Normal University, Luoyang 471934, China; (C.Y.); (Y.M.); (X.Z.); (X.D.)
| | - Yadi Miao
- College of Life Science, Luoyang Normal University, Luoyang 471934, China; (C.Y.); (Y.M.); (X.Z.); (X.D.)
| | - Yinhang Chai
- Henan Province Function-Oriented Porous Materials Key Laboratory, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China;
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaojun Zhang
- College of Life Science, Luoyang Normal University, Luoyang 471934, China; (C.Y.); (Y.M.); (X.Z.); (X.D.)
| | - Xiaojing Dong
- College of Life Science, Luoyang Normal University, Luoyang 471934, China; (C.Y.); (Y.M.); (X.Z.); (X.D.)
| | - Ying Zhao
- Henan Province Function-Oriented Porous Materials Key Laboratory, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China;
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11
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Kiranmayee M, Rajesh N, Vidya Vani M, Khadri H, Mohammed A, Chinni SV, Ramachawolran G, Riazunnisa K, Moussa AY. Green synthesis of Piper nigrum copper-based nanoparticles: in silico study and ADMET analysis to assess their antioxidant, antibacterial, and cytotoxic effects. Front Chem 2023; 11:1218588. [PMID: 37736256 PMCID: PMC10509375 DOI: 10.3389/fchem.2023.1218588] [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: 05/07/2023] [Accepted: 08/14/2023] [Indexed: 09/23/2023] Open
Abstract
Nanobiotechnology is a popular branch of science that is gaining interest among scientists and researchers as it allows for the green manufacturing of nanoparticles by employing plants as reducing agents. This method is safe, cheap, reproducible, and eco-friendly. In this study, the therapeutic property of Piper nigrum fruit was mixed with the antibacterial activity of metallic copper to produce copper nanoparticles. The synthesis of copper nanoparticles was indicated by a color change from brown to blue. Physical characterization of Piper nigrum copper nanoparticles (PN-CuNPs) was performed using UV-vis spectroscopy, FT-IR, SEM, EDX, XRD, and Zeta analyzer. PN-CuNPs exhibited potential antioxidant, antibacterial, and cytotoxic activities. PN-CuNPs have shown concentration-dependent, enhanced free radical scavenging activity, reaching maximum values of 92%, 90%, and 86% with DPPH, H2O2, and PMA tests, respectively. The antibacterial zone of inhibition of PN-CuNPs was the highest against Staphylococcus aureus (23 mm) and the lowest against Escherichia coli (10 mm). PN-CuNPs showed 80% in vitro cytotoxicity against MCF-7 breast cancer cell lines. Furthermore, more than 50 components of Piper nigrum extract were selected and subjected to in silico molecular docking using the C-Docker protocol in the binding pockets of glutathione reductase, E. coli DNA gyrase topoisomerase II, and epidermal growth factor receptor (EGFR) tyrosine to discover their druggability. Pipercyclobutanamide A (26), pipernigramide F (32), and pipernigramide G (33) scored the highest Gibbs free energy at 50.489, 51.9306, and 58.615 kcal/mol, respectively. The ADMET/TOPKAT analysis confirmed the favorable pharmacokinetics, pharmacodynamics, and toxicity profiles of the three promising compounds. The present in silico analysis helps us to understand the possible mechanisms behind the antioxidant, antibacterial, and cytotoxic activities of CuNPs and recommends them as implicit inhibitors of selected proteins.
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Affiliation(s)
- Modumudi Kiranmayee
- Department Biotechnology and Bioinformatics, Yogi Vemana University, Kadapa, India
| | - Nambi Rajesh
- Department Biotechnology and Bioinformatics, Yogi Vemana University, Kadapa, India
| | - M. Vidya Vani
- Department Biotechnology and Bioinformatics, Yogi Vemana University, Kadapa, India
| | - Habeeb Khadri
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Arifullah Mohammed
- Department of Agriculture Science, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli, Malaysia
| | - Suresh V. Chinni
- Department of Biochemistry, Faculty of Medicine, Bioscience, and Nursing, MAHSA University, Jenjarom, Malaysia
- Department of Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | | | - Khateef Riazunnisa
- Department Biotechnology and Bioinformatics, Yogi Vemana University, Kadapa, India
| | - Ashaimaa Y. Moussa
- Department of Pharmacognosy, Faculty of Pharmacy, Ain shams University, Cairo, Egypt
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12
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Hirth N, Gerlach MS, Wiesemann N, Herzberg M, Große C, Nies DH. Full Copper Resistance in Cupriavidus metallidurans Requires the Interplay of Many Resistance Systems. Appl Environ Microbiol 2023:e0056723. [PMID: 37191542 DOI: 10.1128/aem.00567-23] [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: 05/17/2023] Open
Abstract
The metal-resistant bacterium Cupriavidus metallidurans uses its copper resistance components to survive the synergistic toxicity of copper ions and gold complexes in auriferous soils. The cup, cop, cus, and gig determinants encode as central component the Cu(I)-exporting PIB1-type ATPase CupA, the periplasmic Cu(I)-oxidase CopA, the transenvelope efflux system CusCBA, and the Gig system with unknown function, respectively. The interplay of these systems with each other and with glutathione (GSH) was analyzed. Copper resistance in single and multiple mutants up to the quintuple mutant was characterized in dose-response curves, Live/Dead-staining, and atomic copper and glutathione content of the cells. The regulation of the cus and gig determinants was studied using reporter gene fusions and in case of gig also RT-PCR studies, which verified the operon structure of gigPABT. All five systems contributed to copper resistance in the order of importance: Cup, Cop, Cus, GSH, and Gig. Only Cup was able to increase copper resistance of the Δcop Δcup Δcus Δgig ΔgshA quintuple mutant but the other systems were required to increase copper resistance of the Δcop Δcus Δgig ΔgshA quadruple mutant to the parent level. Removal of the Cop system resulted in a clear decrease of copper resistance in most strain backgrounds. Cus cooperated with and partially substituted Cop. Gig and GSH cooperated with Cop, Cus, and Cup. Copper resistance is thus the result of an interplay of many systems. IMPORTANCE The ability of bacteria to maintain homeostasis of the essential-but-toxic "Janus"-faced element copper is important for their survival in many natural environments but also in case of pathogenic bacteria in their respective host. The most important contributors to copper homeostasis have been identified in the last decades and comprise PIB1-type ATPases, periplasmic copper- and oxygen-dependent copper oxidases, transenvelope efflux systems, and glutathione; however, it is not known how all these players interact. This publication investigates this interplay and describes copper homeostasis as a trait emerging from a network of interacting resistance systems.
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Affiliation(s)
- Niklas Hirth
- Molecular Microbiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | | | - Nicole Wiesemann
- Molecular Microbiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Martin Herzberg
- Molecular Microbiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Cornelia Große
- Molecular Microbiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Dietrich H Nies
- Molecular Microbiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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13
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Echenique-Errandonea E, Rojas S, Abdelkader-Fernández VK, Pérez-Mendoza M, Mendes RF, Barbosa P, Figueiredo F, Figueira F, Almeida Paz FA, Delgado-López JM, Rodríguez-Diéguez A, Seco JM. Adsorptive Capacity, Inhibitory Activity and Processing Techniques for a Copper-MOF Based on the 3,4-Dihydroxybenzoate Ligand. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228073. [PMID: 36432174 PMCID: PMC9695574 DOI: 10.3390/molecules27228073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/06/2022] [Accepted: 11/11/2022] [Indexed: 11/22/2022]
Abstract
Due to the fast, emerging development of antibiotic-resistant bacteria, the need for novel, efficient routes to battle these pathogens is crucial; in this scenario, metal-organic frameworks (MOFs) are promising materials for combating them effectively. Herein, a novel Cu-MOF-namely 1-that displays the formula [Cu3L2(DMF)2]n (DMF = N,N-dimethylformamide) is described, synthesized by the combination of copper(II) and 3,4-dihydroxybenzoic acid (H3L)-both having well-known antibacterial properties. The resulting three-dimensional structure motivated us to study the antibacterial activity, adsorptive capacity and processability of the MOF in the form of pellets and membranes as a proof-of-concept to evaluate its future application in devices.
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Affiliation(s)
- Estitxu Echenique-Errandonea
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, N° 3, 20018 Donostia-San Sebastián, Spain
| | - Sara Rojas
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain
| | | | - Manuel Pérez-Mendoza
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain
| | - Ricardo F. Mendes
- Department of Chemistry, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paula Barbosa
- Department of Materials & Ceramic Engineering, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Filipe Figueiredo
- Department of Materials & Ceramic Engineering, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Flávio Figueira
- Department of Chemistry, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Filipe A. Almeida Paz
- Department of Chemistry, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José Manuel Delgado-López
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain
- Correspondence: (A.R.-D.); (J.M.S.)
| | - José Manuel Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, N° 3, 20018 Donostia-San Sebastián, Spain
- Correspondence: (A.R.-D.); (J.M.S.)
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14
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Yue C, Ding C, Yang N, Luo Y, Su J, Cao L, Cheng B. Strong and tough collagen/cellulose nanofibril composite films via the synergistic effect of hydrogen and metal–ligand bonds. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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15
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Souza ALR, Correa MA, Bohn F, Castro H, Fernandes MM, Vaz F, Ferreira A. High Performance of Metallic Thin Films for Resistance Temperature Devices with Antimicrobial Properties. SENSORS (BASEL, SWITZERLAND) 2022; 22:7665. [PMID: 36236764 PMCID: PMC9570709 DOI: 10.3390/s22197665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/28/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Titanium-copper alloy films with stoichiometry given by Ti1-xCux were produced by magnetron co-sputtering technique and analyzed in order to explore the suitability of the films to be applied as resistive temperature sensors with antimicrobial properties. For that, the copper (Cu) amount in the films was varied by applying different DC currents to the source during the deposition in order to change the Cu concentration. As a result, the samples showed excellent thermoresistivity linearity and stability for temperatures in the range between room temperature to 110 °C. The sample concentration of Ti0.70Cu0.30 has better characteristics to act as RTD, especially the αTCR of 1990 ×10-6°C-1. The antimicrobial properties of the Ti1-xCux films were analyzed by exposing the films to the bacterias S. aureus and E. coli, and comparing them with bare Ti and Cu films that underwent the same protocol. The Ti1-xCux thin films showed bactericidal effects, by log10 reduction for both bacteria, irrespective of the Cu concentrations. As a test of concept, the selected sample was subjected to 160 h reacting to variations in ambient temperature, presenting results similar to a commercial temperature sensor. Therefore, these Ti1-xCux thin films become excellent antimicrobial candidates to act as temperature sensors in advanced coating systems.
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Affiliation(s)
- Arthur L. R. Souza
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal 59078-900, RN, Brazil
| | - Marcio A. Correa
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal 59078-900, RN, Brazil
| | - Felipe Bohn
- Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal 59078-900, RN, Brazil
| | - Helder Castro
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
| | - Margarida M. Fernandes
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
| | - Filipe Vaz
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratório de Física para Materiais e Tecnologias Emergentes, Universidade do Minho, 4710-057 Braga, Portugal
| | - Armando Ferreira
- Centro de Física das Universidades do Minho e do Porto (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratório de Física para Materiais e Tecnologias Emergentes, Universidade do Minho, 4710-057 Braga, Portugal
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16
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Antibacterial Ti-Cu implants: A critical review on mechanisms of action. Mater Today Bio 2022; 17:100447. [PMID: 36278144 PMCID: PMC9579810 DOI: 10.1016/j.mtbio.2022.100447] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Titanium (Ti) has been widely used for manufacturing of bone implants because of its mechanical properties, biological compatibility, and favorable corrosion resistance in biological environments. However, Ti implants are prone to infection (peri-implantitis) by bacteria which in extreme cases necessitate painful and costly revision surgeries. An emerging, viable solution for this problem is to use copper (Cu) as an antibacterial agent in the alloying system of Ti. The addition of copper provides excellent antibacterial activities, but the underpinning mechanisms are still obscure. This review sheds light on such mechanisms and reviews how incorporation of Cu can render Ti–Cu implants with antibacterial activity. The review first discusses the fundamentals of interactions between bacteria and implanted surfaces followed by an overview of the most common engineering strategies utilized to endow an implant with antibacterial activity. The underlying mechanisms for antibacterial activity of Ti–Cu implants are then discussed in detail. Special attention is paid to contact killing mechanisms because the misinterpretation of this mechanism is the root of discrepancies in the literature.
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17
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Górecki K, Hansen JS, Li P, Nayeri N, Lindkvist-Petersson K, Gourdon P. Microfluidic-Derived Detection of Protein-Facilitated Copper Flux Across Lipid Membranes. Anal Chem 2022; 94:11831-11837. [PMID: 35969432 PMCID: PMC9434548 DOI: 10.1021/acs.analchem.2c02081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
![]()
Measurement of protein-facilitated copper flux across
biological
membranes is a considerable challenge. Here, we demonstrate a straightforward
microfluidic-derived approach for visualization and measurement of
membranous Cu flux. Giant unilamellar vesicles, reconstituted with
the membrane protein of interest, are prepared, surface-immobilized,
and assessed using a novel quencher–sensor reporter system
for detection of copper. With the aid of a syringe pump, the external
buffer is exchanged, enabling consistent and precise exchange of solutes,
without causing vesicle rupture or uneven local metal concentrations
brought about by rapid mixing. This approach bypasses common issues
encountered when studying heavy metal-ion flux, thereby providing
a new platform for in vitro studies of metal homeostasis
aspects that are critical for all cells, health, and disease.
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Affiliation(s)
- Kamil Górecki
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden
| | - Jesper S Hansen
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden
| | - Ping Li
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden
| | - Niloofar Nayeri
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden
| | - Karin Lindkvist-Petersson
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden
| | - Pontus Gourdon
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund SE-22100, Sweden.,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N DK-2200, Denmark
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18
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Biogenic Synthesis and Characterization of Chitosan-CuO Nanocomposite and Evaluation of Antibacterial Activity against Gram-Positive and -Negative Bacteria. Polymers (Basel) 2022; 14:polym14091832. [PMID: 35567006 PMCID: PMC9104765 DOI: 10.3390/polym14091832] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 12/25/2022] Open
Abstract
Chitosan-copper oxide (CHT-CuO) nanocomposite was synthesized using olive leaf extract (OLE) as reducing agent and CuSO4⋅5H2O as precursor. CHT-CuO nanocomposite was prepared using an in situ method in which OLE was added to a solution of chitosan and CuSO4⋅5H2O mixture in the ratio of 1:5 (v/v) and heated at a temperature of 90 °C. The obtained CHT-CuO nanocomposite was characterized using field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) spectrophotometry, energy-dispersive X-ray spectroscopy (EDAX), Fourier transform infrared spectroscopy (FTIR), and high-resolution transmission electron microscopy (TEM). TEM results indicated that CHT-CuO nanocomposite are spherical in shape with size ranging from 3.5 to 6.0 nm. Antibacterial activity of the synthesized nanocomposites was evaluated against Gram-positive (Bacillus cereus, Staphyloccous haemolytica and Micrococcus Luteus) and Gram-negative (Escherichia coli, Pseudomonas citronellolis, Pseudomonas aeruginosa, kliebisella sp., Bradyrhizobium japonicum and Ralstonia pickettii) species by cup platting or disc diffusion method. Overall, against all tested bacterial strains, the diameters of the inhibition zone of the three nanocomposites fell between 6 and 24 mm, and the order of the antimicrobial activity was as follows: CuO-1.0 > CuO-0.5 > CuO-2.0. The reference antibiotic amoxicillin and ciprofloxacin showed greater activity based on the diameter of zones of inhibition (between 15−32 mm) except for S. heamolytica and P. citronellolis bacteria strains. The nanocomposites MIC/MBC were between 0.1 and 0.01% against all tested bacteria, except S. heamolityca (>0.1%). Based on MIC/MBC values, CuO-0.5 and CuO-1.0 were more active than CuO-2.0, in line with the observations from the disc diffusion experiment. The findings indicate that these nanocomposites are efficacious against bacteria; however, Gram-positive bacteria were less susceptible. The synthesized CHT-CuO nanocomposite shows promising antimicrobial activities and could be utilized as an antibacterial agent in packaging and medical applications.
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19
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Raja FNS, Worthington T, de Souza LPL, Hanaei SB, Martin RA. Synergistic Antimicrobial Metal Oxide-Doped Phosphate Glasses; a Potential Strategy to Reduce Antimicrobial Resistance and Host Cell Toxicity. ACS Biomater Sci Eng 2022; 8:1193-1199. [PMID: 35199992 PMCID: PMC9007416 DOI: 10.1021/acsbiomaterials.1c00876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The emergence of antimicrobial resistant strains bacteria and a decline in the discovery of new antibiotics has led to the idea of combining various antimicrobials to treat resistant strains and/or polymicrobial infections. Metal oxide-doped glasses have been extensively investigated for their antimicrobial potential; however to date, most experiments have focused on single metal species in isolation. The present study investigates the antimicrobial potential of sodium calcium phosphates (P2O5)50(Na2O)20(CaO)30-X(MO)X, where M is cobalt, copper, or zinc as single species. In addition, this work studied the effect of co-doping glasses containing two different metal ions (Co + Cu, Co + Zn, and Cu + Zn). The antimicrobial efficacy of all glasses was tested against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacterial strains, as well as a fungal strain (Candida albicans). Minimum inhibitory and bactericidal concentrations and time kill/synergy assays were used to assess the antimicrobial activity. An enhanced antimicrobial effect, at 5 mg/mL concentration, was exhibited by cobalt, copper, and zinc oxide glasses alone and in combinations. A synergistic antimicrobial effect was observed by Cu + Co and Cu + Zn against E. coli and Cu + Zn against S. aureus.
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Affiliation(s)
- Farah N S Raja
- College of Health and Life Sciences and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham B4 7ET, U.K
| | - Tony Worthington
- College of Health and Life Sciences and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham B4 7ET, U.K
| | - Lucas P L de Souza
- College of Engineering and Physical Sciences, and Aston Institute of Materials Research. Aston University, Aston Triangle, Birmingham B4 7ET, U.K
| | - Shirin B Hanaei
- College of Engineering and Physical Sciences, and Aston Institute of Materials Research. Aston University, Aston Triangle, Birmingham B4 7ET, U.K
| | - Richard A Martin
- College of Engineering and Physical Sciences, and Aston Institute of Materials Research. Aston University, Aston Triangle, Birmingham B4 7ET, U.K
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20
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Ferreira A, Fernandes MM, Souza ALR, Correa MA, Lanceros-Mendez S, Vaz F. Flexible TiCu x Thin Films with Dual Antimicrobial and Piezoresistive Characteristics. ACS APPLIED BIO MATERIALS 2022; 5:1267-1272. [PMID: 35168328 DOI: 10.1021/acsabm.1c01273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The eradication of microorganisms from high traffic surfaces to prevent either viral or bacterial infections represents an urgent need, mainly in the scope of the present pandemic scenario. In this context, this work explores the dual functionality of titanium-copper thin films as pressure elements with antimicrobial properties, aiming for the implementation of touch and sensing capabilities in high traffic surfaces. Copper was employed as the antibacterial agent within a titanium matrix. The film's geometry and deposition parameters were varied in order to optimize antimicrobial and piezoresistive response. A considerable antimicrobial response has been obtained, increasing the copper amount (from 23 to 63 at. %) in the titanium matrix, leading to an outstanding 8 log10 CFU bacterial reduction in the case of Escherichia coli. Moreover, for the same amount of copper, the piezoresistive sensibility of the thin films increases up to a maximum gauge factor of 5.18 ± 0.09, which indicates an adequate electromechanical behavior for sensing applications. Our findings demonstrate the best combined antimicrobial and piezoresistive characteristics for the films with a Cu content of 63 at. %, indicating a potential use of these films for electromechanical sensor applications.
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Affiliation(s)
- Armando Ferreira
- Center of Physics, University of Minho, 4710-057 Braga, Portugal
| | - Margarida M Fernandes
- Center of Physics, University of Minho, 4710-057 Braga, Portugal.,Center of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Arthur L R Souza
- Physics Department, Federal University of Rio Grande do Norte, 59078-900 Natal, RN, Brazil
| | - Marcio A Correa
- Center of Physics, University of Minho, 4710-057 Braga, Portugal.,Physics Department, Federal University of Rio Grande do Norte, 59078-900 Natal, RN, Brazil
| | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.,Ikerbasque, Basque Foundation for Science, E-48009 Bilbao, Spain
| | - Filipe Vaz
- Center of Physics, University of Minho, 4710-057 Braga, Portugal
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21
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Razavipour M, Gonzalez M, Singh N, Cimenci CE, Chu N, Alarcon EI, Villafuerte J, Jodoin B. Biofilm Inhibition and Antiviral Response of Cold Sprayed and Shot Peened Copper Surfaces: Effect of Surface Morphology and Microstructure. JOURNAL OF THERMAL SPRAY TECHNOLOGY 2022; 31:130-144. [PMID: 37520908 PMCID: PMC8735887 DOI: 10.1007/s11666-021-01315-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/14/2021] [Accepted: 12/19/2021] [Indexed: 08/01/2023]
Abstract
Antibacterial properties of copper against planktonic bacteria population are affected by surface microstructure and topography. However, copper interactions with bacteria in a biofilm state are less studied. This work aims at better understanding the difference in biofilm inhibition of bulk, cold-sprayed, and shot-peened copper surfaces and gaining further insights on the underlying mechanisms using optical and scanning electron microscopy to investigate the topography and microstructure of the surfaces. The biofilm inhibition ability is reported for all surfaces. Results show that the biofilm inhibition performance of cold sprayed copper, while initially better, decreases with time and results in an almost identical performance than as-received copper after 18h incubation time. The shot-peened samples with a rough and ultrafine microstructure demonstrated an enhanced biofilm control, especially at 18 hr. The biofilm control mechanisms were explained by the diffusion rates and concentration of copper ions and the interaction between these ions and the biofilm, while surface topography plays a role in the bacteria attachment at the early planktonic state. Furthermore, the data suggest that surface topography plays a key role in antiviral activity of the materials tested, with a smooth surface being the most efficient. Graphical Abstract
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Affiliation(s)
- Maryam Razavipour
- Cold Spray Research Laboratory, University of Ottawa, Ottawa, ON Canada
| | - Mayte Gonzalez
- Division of Cardiac Surgery, BEaTS Research, University of Ottawa Heart Institute, Ottawa, Ontario Canada
| | - Naveen Singh
- Cold Spray Research Laboratory, University of Ottawa, Ottawa, ON Canada
| | - Cagla Eren Cimenci
- Division of Cardiac Surgery, BEaTS Research, University of Ottawa Heart Institute, Ottawa, Ontario Canada
| | - Nicole Chu
- Division of Cardiac Surgery, BEaTS Research, University of Ottawa Heart Institute, Ottawa, Ontario Canada
| | - Emilio I. Alarcon
- Division of Cardiac Surgery, BEaTS Research, University of Ottawa Heart Institute, Ottawa, Ontario Canada
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario Canada
| | | | - Bertrand Jodoin
- Cold Spray Research Laboratory, University of Ottawa, Ottawa, ON Canada
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22
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Seo B, Kanematsu H, Nakamoto M, Miyabayashi Y, Tanaka T. Copper Surface Treatment Method with Antibacterial Performance Using "Super-Spread Wetting" Properties. MATERIALS 2022; 15:ma15010392. [PMID: 35009540 PMCID: PMC8746668 DOI: 10.3390/ma15010392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 02/04/2023]
Abstract
In this work, a copper coating is developed on a carbon steel substrate by exploiting the superwetting properties of liquid copper. We characterize the surface morphology, chemical composition, roughness, wettability, ability to release a copper ion from surfaces, and antibacterial efficacy (against Escherichia coli and Staphylococcus aureus). The coating shows a dense microstructure and good adhesion, with thicknesses of approximately 20–40 µm. X-ray diffraction (XRD) analysis reveals that the coated surface structure is composed of Cu, Cu2O, and CuO. The surface roughness and contact angle measurements suggest that the copper coating is rougher and more hydrophobic than the substrate. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) measurements reveal a dissolution of copper ions in chloride-containing environments. The antibacterial test shows that the copper coating achieves a 99.99% reduction of E. coli and S. aureus. This study suggests that the characteristics of the copper-coated surface, including the chemical composition, high surface roughness, good wettability, and ability for copper ion release, may result in surfaces with antibacterial properties.
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Affiliation(s)
- Beomdeok Seo
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Osaka, Japan; (M.N.); (T.T.)
- Correspondence:
| | - Hideyuki Kanematsu
- Department of Materials Science and Engineering, National Institute of Technology (KOSEN), Suzuka College, Suzuka 510-0294, Mie, Japan;
| | - Masashi Nakamoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Osaka, Japan; (M.N.); (T.T.)
| | - Yoshitsugu Miyabayashi
- Graduate School of Engineering, Osaka University, 2-8 Yamadaoka, Suita 565-0871, Osaka, Japan;
| | - Toshihiro Tanaka
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Osaka, Japan; (M.N.); (T.T.)
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Gupta A, Sharma CP, Thamaraiselvan C, Pisharody L, Powell CD, Arnusch CJ. Low-Voltage Bacterial and Viral Killing Using Laser-Induced Graphene-Coated Non-woven Air Filters. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59373-59380. [PMID: 34851621 DOI: 10.1021/acsami.1c20198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Laser-induced graphene (LIG) is uniquely positioned to advance applications in which electrically conductive carbon coatings are required. Recently, the antifouling, antiviral, and antibacterial properties of LIG have been proven in both air and water filtration applications. For example, an unsupported LIG based filter (pore size: ∼0.3 μm) demonstrated exceptional air filtration properties, while its joule heating effects successfully sterilized and removed unwanted biological components in air despite persisting challenges such as pressure drop, energy consumption, and lack of mechanical robustness. Here, we developed a polyimide (PI) non-woven supported LIG air filter with negligible pressure drop changes compared to the non-woven support material and showed that low electrical current density inactivates aerosolized bacteria. A current density of 4.5 mA/cm2 did not cause significant joule heating, and 97.2% bacterial removal was obtained. The low-voltage antibacterial mechanism was elucidated using bacterial inhibition experiments on a titanium surface and on an LIG surface fabricated on dense PI films. Complete sterilization was obtained using current densities of ∼8 mA/cm2 applied for 2 min or ∼ 6 mA/cm2 for 10 min upon the dense PI-LIG surface. Lastly, >98% bacterial removal was observed using a low-resistance LIG-coated non-woven polyimide air filter at 5 V. However, only very low voltages (∼0.3 V) were needed to remove ∼99% Pseudomonas aeruginosa bacteria and 100% of T4 virus when the LIG-coated filters were hybridized with a stainless steel mesh. Our results show that low current density levels at very low voltages are sufficient for substantial bacterial and viral inactivation, and that these principles might be effectively used in a wide number of air filtration applications such as air conditioners or other ventilation systems, which might limit the spread of infectious particles in hospitals, homes, workplaces, and the transportation industry.
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Affiliation(s)
- Abhishek Gupta
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
| | - Chetan Prakash Sharma
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
| | - Chidambaram Thamaraiselvan
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
| | - Lakshmi Pisharody
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
| | - Camilah D Powell
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
| | - Christopher J Arnusch
- Dept. of Desalination and Water Treatment, Zuckerberg Institute of Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 8499000, Israel
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Takeda Y, Jamsransuren D, Nagao T, Fukui Y, Matsuda S, Ogawa H. Application of Copper Iodide Nanoparticle-Doped Film and Fabric To Inactivate SARS-CoV-2 via the Virucidal Activity of Cuprous Ions (Cu +). Appl Environ Microbiol 2021; 87:e0182421. [PMID: 34613751 PMCID: PMC8612262 DOI: 10.1128/aem.01824-21] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 12/14/2022] Open
Abstract
As a result of the novel coronavirus disease 2019 pandemic, strengthening control measures against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become an urgent global issue. In addition to antiviral therapy and vaccination strategies, applying available virucidal substances for SARS-CoV-2 inactivation is also a target of research to prevent the spread of infection. Here, we evaluated the SARS-CoV-2 inactivation activity of a copper iodide (CuI) nanoparticle dispersion, which provides Cu+ ions having high virucidal activity, and its mode of actions. In addition, the utility of CuI-doped film and fabric for SARS-CoV-2 inactivation was evaluated. The CuI dispersion exhibited time-dependent rapid virucidal activity. Analyses of the modes of action of CuI performed by Western blotting and real-time reverse transcription-PCR targeting viral proteins and the genome revealed that CuI treatment induced the destruction of these viral components. In this setting, the indirect action of CuI-derived reactive oxygen species contributed to the destruction of viral protein. Moreover, the CuI-doped film and fabric demonstrated rapid inactivation of the SARS-CoV-2 solution in which the viral titer was high. These findings indicated the utility of the CuI-doped film and fabric as anti-SARS-CoV-2 materials for the protection of high-touch environmental surfaces and surgical masks/protective clothes. Throughout this study, we demonstrated the effectiveness of CuI nanoparticles for inactivating SARS-CoV-2 and revealed a part of its virucidal mechanism of action. IMPORTANCE The COVID-19 pandemic has caused an unprecedented number of infections and deaths. As the spread of the disease is rapid and the risk of infection is severe, hand and environmental hygiene may contribute to suppressing contact transmission of SARS-CoV-2. Here, we evaluated the SARS-CoV-2 inactivation activity of CuI nanoparticles, which provide the Cu+ ion as an antiviral agent, and we provided advanced findings of the virucidal mechanisms of action of Cu+. Our results showed that the CuI dispersion, as well as CuI-doped film and fabric, rapidly inactivated SARS-CoV-2 with a high viral titer. We also demonstrated the CuI's virucidal mechanisms of action, specifically the destruction of viral proteins and the genome by CuI treatment. Protein destruction largely depended on CuI-derived reactive oxygen species. This study provides novel information about the utility and mechanisms of action of promising virucidal material against SARS-CoV-2.
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Affiliation(s)
- Yohei Takeda
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Dulamjav Jamsransuren
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Tomokazu Nagao
- Emergent Research Center, R&D Headquarter, NBC Meshtec Inc., Hino, Tokyo, Japan
| | - Yoko Fukui
- Emergent Research Center, R&D Headquarter, NBC Meshtec Inc., Hino, Tokyo, Japan
| | - Sachiko Matsuda
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Haruko Ogawa
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
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Wang S, Liu X, Lei M, Sun J, Qu X, Liu C. Continuous and controllable electro-fabrication of antimicrobial copper-alginate dressing for infected wounds treatment. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:143. [PMID: 34817703 PMCID: PMC8613166 DOI: 10.1007/s10856-021-06619-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/26/2021] [Indexed: 05/02/2023]
Abstract
The contamination of chronic wound with bacteria especially methicillin-resistant Staphylococcus aureus (MRSA) is considered as the major factor interferencing normal wound healing. There still remain great challenges in developing safe and effective wound dressings with wide-spectrum antibacterial functions. Alginate hydrogel is a common dressing for wound treatment. Copper is one of the trace elements in human body with inherent antibacterial activity. Traditional methods for preparing a structure-controlled copper-alginate antibacterial matrix are difficult however, due to the fast and uncontrolled gelation between alginate and metal ions. In this work, we report an electrodeposition method for rapid fabrication of copper cross-linked alginate antibacterial films (Cu2+-Alg) with controlled structure and copper content, which is relied on an electrical signal controlled release of copper ions from the reaction of insoluble salt Cu2(OH)2CO3 and the generated protons via water electrolysis on anode. The results prove that the physical structure and chemical composition of the electrodeposited Cu2+-Alg films can be continuously modulated by the imposed charges during electrodeposition. In vitro tests demonstrate the film has Cu2+ content-dependent bactericidal activities. Film's cytocompatibility is well controlled by the imposed charges for Cu2+-Alg fabrication. The MRSA infected wound model in vivo also indicates that Cu2+-Alg film can effectively eliminate bacterial infection and suppress host inflammatory responses. We believe this study demonstrates a convenient and controllable strategy to fabricate alginate antibacterial dressings with potential applications for infected wound treatment. More broadly, our work reveals electrodeposition is a general and simple platform to design alginate films with versatile functions.
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Affiliation(s)
- Shijia Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiaoli Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Miao Lei
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Junjie Sun
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xue Qu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of material science and engineering, East China University of Science and Technology, Shanghai, 200237, China.
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Pettinari C, Pettinari R, Di Nicola C, Tombesi A, Scuri S, Marchetti F. Antimicrobial MOFs. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214121] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Soltani S, Akhbari K. Cu-BTC metal-organic framework as a biocompatible nanoporous carrier for chlorhexidine antibacterial agent. J Biol Inorg Chem 2021; 27:81-87. [PMID: 34716792 DOI: 10.1007/s00775-021-01912-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 09/29/2021] [Indexed: 01/31/2023]
Abstract
Antibacterial materials are an essential part of modern life and many efforts have been made to find a new and effective type of them. In this study, chlorhexidine (CHX) was loaded on Cu-BTC metal-organic framework (MOF), that both of them are known to have antibacterial properties. The antibacterial properties of Cu-BTC, CHX and CHX@Cu-BTC were investigated against Gram-positive and Gram-negative bacteria. Agar well-diffusion method and MIC test showed that CHX@Cu-BTC has high antibacterial activity. Characterization methods, such as FT-IR, XRD, N2 adsorption-desorption isotherm, TGA, SEM, EDX, TEM and zeta potential, were employed to characterize their structures. Cu-BTC MOF nanoparticles were synthesized and used as nanoporous carriers for chlorhexidine. The loading was about 10%, which was absorbed into the pores. Antibacterial activity was investigated against Gram-negative and Gram-positive bacteria by Agar well diffusion method and MIC (minimal inhibitory concentration) assay. The CHX@Cu-BTC had synergistic antibacterial activity of Cu-BTC and chlorhexidine.
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Affiliation(s)
- Sajjad Soltani
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Kamran Akhbari
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
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Walji SD, Bruder MR, Aucoin MG. Virus matrix interference on assessment of virucidal activity of high-touch surfaces designed to prevent hospital-acquired infections. Antimicrob Resist Infect Control 2021; 10:133. [PMID: 34507617 PMCID: PMC8431935 DOI: 10.1186/s13756-021-01001-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 08/27/2021] [Indexed: 12/24/2022] Open
Abstract
Objectives/purpose High-touch surfaces are a critical reservoir in the spread of nosocomial infections. Although disinfection and infection control protocols are well developed, they lack the ability to passively reduce the pathogenic load of high-touch surfaces. Copper and its alloys have been suggested as a surface that exhibit continuous biocidal effects. Antimicrobial studies on these surfaces are prevalent, while virucidal studies are not as well explored. The goal of this study was to first determine the virucidal activity of a copper–nickel–zinc alloy and to then examine the effect of soiling and virus preparation on virucidal activity. Methods A baculovirus vector was used as an easily quantifiable model of an infectious enveloped animal cell virus. Droplets containing virus were deposited on surfaces and allowed to stay wet using humidity control or were dried onto the surface. Virus was then recovered from the surface and assayed for infectivity. To examine how the composition of the droplet affected the survival of the virus, 3 different soiling conditions were tested. The first two were recommended by the United States Environmental Protection Agency and the third consisted of cell debris resulting from virus amplification. Results A copper–nickel–zinc alloy was shown to have strong virucidal effects for an enveloped virus. Copper, nickel, and zinc ions were all shown to leach from the alloy surface and are the likely cause of virucidal activity by this surface. Virucidal activity was achieved under moderate soiling but lost under high soiling generated by routine virus amplification procedures. The surface was able to repeatably inactivate dried virus droplets under moderate soiling conditions, but unable to do so for virus droplets kept wet using high humidity. Conclusion Ion leaching was associated with virucidal activity in both wet and dried virus conditions. Soiling protected the virus by quenching metal ions, and not by inhibiting leaching. The composition of the solution containing virus plays a critical role in evaluating the virucidal activity of surfaces and surface coatings.
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Affiliation(s)
- Sadru-Dean Walji
- Department of Chemical Engineering, University of Waterloo, 200 University Ave West, Waterloo, ON, N2L 3G1, Canada
| | - Mark R Bruder
- Department of Chemical Engineering, University of Waterloo, 200 University Ave West, Waterloo, ON, N2L 3G1, Canada
| | - Marc G Aucoin
- Department of Chemical Engineering, University of Waterloo, 200 University Ave West, Waterloo, ON, N2L 3G1, Canada.
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Wang TL, Zhou ZF, Liu JF, Hou XD, Zhou Z, Dai YL, Hou ZY, Chen F, Zheng LP. Donut-like MOFs of copper/nicotinic acid and composite hydrogels with superior bioactivity for rh-bFGF delivering and skin wound healing. J Nanobiotechnology 2021; 19:275. [PMID: 34503490 PMCID: PMC8427876 DOI: 10.1186/s12951-021-01014-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/25/2021] [Indexed: 12/27/2022] Open
Abstract
Background Skin injury and the resultant defects are common clinical problems, and usually lead to chronic skin ulcers and even life-threatening diseases. Copper, an essential trace element of human body, has been reported to promote the regeneration of skin by stimulating proliferation of endothelial cell and enhance angiogenesis. Results Herein, we have prepared a new donut-like metal–organic frameworks (MOF) of copper-nicotinic acid (CuNA) by a simple solvothermal reaction. The rough surface of CuNA is beneficial for loading/release basic fibroblast growth factor (bFGF). The CuNAs with/without bFGF are easily processed into a light-responsive composite hydrogel with GelMA, which not only show excellent mechanical properties, but also display superior biocompatibility, antibacterial ability and bioactivity. Moreover, in the in vivo full-thickness defect model of skin wound, the resultant CuNA-bFGF@GelMA hydrogels significantly accelerate the wound healing, by simultaneously inhibiting the inflammatory response, promoting the new blood vessels formation and the deposition of collagen and elastic fibers. Conclusions Considering the superior biocompatibility, antibacterial ability and bioactivity, the CuNA and its composite light-responsive hydrogel system will be promising in the applications of skin and even other tissue regeneration. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-01014-z.
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Affiliation(s)
- Tian-Long Wang
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China
| | - Zi-Fei Zhou
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China.,Shanghai Trauma Emergency Center, Shanghai, 200072, China
| | - Jun-Feng Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China
| | - Xiao-Dong Hou
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China
| | - Zhi Zhou
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China
| | - Yun-Lu Dai
- Cancer Centre, Faculty of Health Sciences, University of Macau, 999078, Macau SAR, China
| | - Zhi-Yong Hou
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, 050051, China.
| | - Feng Chen
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China.
| | - Long-Po Zheng
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, 200072, Shanghai, China. .,Shanghai Trauma Emergency Center, Shanghai, 200072, China.
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Lin Z, Liu L, Wang W, Jia L, Shen Y, Zhang X, Ge D, Shi W, Sun Y. The role and mechanism of polydopamine and cuttlefish ink melanin carrying copper ion nanoparticles in antibacterial properties and promoting wound healing. Biomater Sci 2021; 9:5951-5964. [PMID: 34318796 DOI: 10.1039/d1bm00622c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Melanin and its analogue polydopamine (PDA) have attracted considerable attention in biomedical science due to their surface-rich metal binding sites, excellent adhesion and good biocompatibility. Bacterial infections at the wound site and uncontrolled bleeding are associated with a high risk of death, and the prevention of wound infections remains a major challenge. On this basis, the four nanoparticles (NPs) of melanin, PDA, copper ion-loaded melanin (Cu(ii) loaded melanin) and copper ion-loaded PDA (Cu(ii) loaded PDA) were studied in terms of antibacterial and wound healing capabilities. The in vitro experiments showed that Cu(ii) loaded PDA NPs had good blood compatibility and low cytotoxicity, showing the best antibacterial effect in comparison with other samples. Not only could the slow release of copper ions from the nanoparticles kill bacteria, but also the phenolic hydroxyl group and amine groups of PDA NPs played a synergistic role in bacterial death. In wound healing experiments, the Cu(ii) loaded PDA NPs could easily and tightly bind with biological tissue, demonstrating excellent hemostasis, antibacterial and wound healing capabilities. In summary, the excellent properties of Cu(ii) loaded PDA NPs made them a safe and effective drug for preventing wound infection and promoting healing.
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Affiliation(s)
- Zhenjie Lin
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China.
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Abraham J, Dowling K, Florentine S. Can Copper Products and Surfaces Reduce the Spread of Infectious Microorganisms and Hospital-Acquired Infections? MATERIALS (BASEL, SWITZERLAND) 2021; 14:3444. [PMID: 34206230 PMCID: PMC8269470 DOI: 10.3390/ma14133444] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 01/04/2023]
Abstract
Pathogen transfer and infection in the built environment are globally significant events, leading to the spread of disease and an increase in subsequent morbidity and mortality rates. There are numerous strategies followed in healthcare facilities to minimize pathogen transfer, but complete infection control has not, as yet, been achieved. However, based on traditional use in many cultures, the introduction of copper products and surfaces to significantly and positively retard pathogen transmission invites further investigation. For example, many microbes are rendered unviable upon contact exposure to copper or copper alloys, either immediately or within a short time. In addition, many disease-causing bacteria such as E. coli O157:H7, hospital superbugs, and several viruses (including SARS-CoV-2) are also susceptible to exposure to copper surfaces. It is thus suggested that replacing common touch surfaces in healthcare facilities, food industries, and public places (including public transport) with copper or alloys of copper may substantially contribute to limiting transmission. Subsequent hospital admissions and mortality rates will consequently be lowered, with a concomitant saving of lives and considerable levels of resources. This consideration is very significant in times of the COVID-19 pandemic and the upcoming epidemics, as it is becoming clear that all forms of possible infection control measures should be practiced in order to protect community well-being and promote healthy outcomes.
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Affiliation(s)
- Joji Abraham
- School of Engineering, Information Technology and Physical Sciences, Mt Helen Campus, Ballarat, VIC 3353, Australia;
| | - Kim Dowling
- School of Engineering, Information Technology and Physical Sciences, Mt Helen Campus, Ballarat, VIC 3353, Australia;
- Department of Geology, University of Johannesburg, Johannesburg 2006, South Africa
| | - Singarayer Florentine
- Future Regions Research Centre, School of Science, Psychology and Sport, Federation University Australia, Mt Helen Campus, Ballarat, VIC 3353, Australia;
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Salah I, Parkin IP, Allan E. Copper as an antimicrobial agent: recent advances. RSC Adv 2021; 11:18179-18186. [PMID: 35480904 PMCID: PMC9033467 DOI: 10.1039/d1ra02149d] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/11/2021] [Indexed: 12/13/2022] Open
Abstract
From its uses in ancient civilisations, copper has an established history as an antimicrobial agent. Extensive research has determined the efficacy and mechanism of copper's antimicrobial activity against microorganisms. The process is multifaceted with the main mechanism of bactericidal activity being the generation of reactive oxygen species (ROS), which irreversibly damages membranes. Copper ions released from surfaces lead to RNA degradation and membrane disruption of enveloped viruses. For fungi, the mechanism involves the physical deterioration of the membrane and copper ion influx. Due to variations in the experimental parameters, it is difficult to compare studies directly. In this review article, we outline the importance of the experimental conditions currently employed and how they bear little resemblance to real-world conditions. We endorse previous recommendations calling for an update to industrial standard tests. The causes of death for each microorganism by CuNPs and metallic copper is summarised.![]()
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Affiliation(s)
- Intisar Salah
- Materials Chemistry Research Centre, Department of Chemistry, University College London 20 Gordon Street London UK
| | - Ivan P Parkin
- Materials Chemistry Research Centre, Department of Chemistry, University College London 20 Gordon Street London UK
| | - Elaine Allan
- Department of Microbial Diseases, Eastman Dental Institute, University College London Royal Free Campus, Rowland Hill Street London UK
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Wang P, Yuan Y, Xu K, Zhong H, Yang Y, Jin S, Yang K, Qi X. Biological applications of copper-containing materials. Bioact Mater 2021; 6:916-927. [PMID: 33210018 PMCID: PMC7647998 DOI: 10.1016/j.bioactmat.2020.09.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022] Open
Abstract
Copper is an indispensable trace metal element in the human body, which is mainly absorbed in the stomach and small intestine and excreted into the bile. Copper is an important component and catalytic agent of many enzymes and proteins in the body, so it can influence human health through multiple mechanisms. Based on the biological functions and benefits of copper, an increasing number of researchers in the field of biomaterials have focused on developing novel copper-containing biomaterials, which exhibit unique properties in protecting the cardiovascular system, promoting bone fracture healing, and exerting antibacterial effects. Copper can also be used in promoting incisional wounds healing, killing cancer cells, Positron Emission Tomography (PET) imaging, radioimmunological tracing and radiotherapy of cancer. In the present review, the biological functions of copper in the human body are presented, along with an overview of recent progress in our understanding of the biological applications and development of copper-containing materials. Furthermore, this review also provides the prospective on the challenges of those novel biomaterials for future clinical applications.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Yonghui Yuan
- Clinical Research Center for Malignant Tumor of Liaoning Province, Cancer Hospital of China Medical University Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, 110042, China
| | - Ke Xu
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Hongshan Zhong
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Yinghui Yang
- Suzhou Silvan Medical Co., Ltd, Suzhou 215006, China
| | - Shiyu Jin
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China
| | - Xun Qi
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
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Li R, Chen T, Pan X. Metal-Organic-Framework-Based Materials for Antimicrobial Applications. ACS NANO 2021; 15:3808-3848. [PMID: 33629585 DOI: 10.1021/acsnano.0c09617] [Citation(s) in RCA: 146] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
To address the serious threat of bacterial infection to public health, great efforts have been devoted to the development of antimicrobial agents for inhibiting bacterial growth, preventing biofilm formation, and sterilization. Very recently, metal-organic frameworks (MOFs) have emerged as promising materials for various antimicrobial applications owing to their different functions including the controlled/stimulated decomposition of components with bactericidal activity, strong interactions with bacterial membranes, and formation of photogenerated reactive oxygen species (ROS) as well as high loading and sustained releasing capacities for other antimicrobial materials. This review focuses on recent advances in the design, synthesis, and antimicrobial applications of MOF-based materials, which are classified by their roles as component-releasing (metal ions, ligands, or both), photocatalytic, and chelation antimicrobial agents as well as carriers or/and synergistic antimicrobial agents of other functional materials (antibiotics, enzymes, metals/metal oxides, carbon materials, etc.). The constituents, fundamental antimicrobial mechanisms, and evaluation of antimicrobial activities of these materials are highlighted to present the design principles of efficient MOF-based antimicrobial materials. The prospects and challenges in this research field are proposed.
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Affiliation(s)
- Rui Li
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment, Zhejiang University of Technology Hangzhou 310014, China
| | - Tongtong Chen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment, Zhejiang University of Technology Hangzhou 310014, China
| | - Xiangliang Pan
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment, Zhejiang University of Technology Hangzhou 310014, China
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Dauvergne E, Mullié C. Brass Alloys: Copper-Bottomed Solutions against Hospital-Acquired Infections? Antibiotics (Basel) 2021; 10:antibiotics10030286. [PMID: 33801855 PMCID: PMC7999369 DOI: 10.3390/antibiotics10030286] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/26/2021] [Accepted: 03/08/2021] [Indexed: 12/26/2022] Open
Abstract
Copper has been used for its antimicrobial properties since Antiquity. Nowadays, touch surfaces made of copper-based alloys such as brasses are used in healthcare settings in an attempt to reduce the bioburden and limit environmental transmission of nosocomial pathogens. After a brief history of brass uses, the various mechanisms that are thought to be at the basis of brass antimicrobial action will be described. Evidence shows that direct contact with the surface as well as cupric and cuprous ions arising from brass surfaces are instrumental in the antimicrobial effectiveness. These copper ions can lead to oxidative stress, membrane alterations, protein malfunctions, and/or DNA damages. Laboratory studies back up a broad spectrum of activity of brass surfaces on bacteria with the possible exception of bacteria in their sporulated form. Various parameters influencing the antimicrobial activity such as relative humidity, temperature, wet/dry inoculation or wear have been identified, making it mandatory to standardize antibacterial testing. Field trials using brass and copper surfaces consistently report reductions in the bacterial bioburden but, evidence is still sparse as to a significant impact on hospital acquired infections. Further work is also needed to assess the long-term effects of chemical/physical wear on their antimicrobial effectiveness.
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Affiliation(s)
- Emilie Dauvergne
- Laboratoire AGIR-UR UPJV 4294, UFR de Pharmacie, Université de Picardie Jules Verne, 80037 Amiens, France;
- FAVI Limited Company, 80490 Hallencourt, France
| | - Catherine Mullié
- Laboratoire AGIR-UR UPJV 4294, UFR de Pharmacie, Université de Picardie Jules Verne, 80037 Amiens, France;
- Laboratoire Hygiène, Risque Biologique et Environnement, Centre Hospitalier Universitaire Amiens-Picardie, 80025 Amiens, France
- Correspondence:
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Sousa BC, Massar CJ, Gleason MA, Cote DL. On the emergence of antibacterial and antiviral copper cold spray coatings. J Biol Eng 2021; 15:8. [PMID: 33627170 PMCID: PMC7904298 DOI: 10.1186/s13036-021-00256-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/19/2021] [Indexed: 11/10/2022] Open
Abstract
In this literature review, the antipathogenic properties and contact-mediated antibacterial and antiviral performance of copper cold spray surfaces are assessed and compared with alternative antimicrobial materials that are able to kill and/or inactivate infectious agents via direct contact. Discussion is also provided concerning the suitability of copper cold spray material consolidations as biocidal and viricidal surfaces that retain long-term functionality as a preventative measure against fomite transmission of pathogenic agents and hospital-acquired infections from contaminated high-touch surfaces. Numerable alternative antimicrobial coatings and surfaces that do not rely upon the oligodynamic action of copper are detailed. Given the ongoing need for recognition of said alternative antimicrobial materials by authoritative agencies, such as the U.S. Environmental Protection Agency, the relevant literature on non-copper-based antipathogenic coatings and surfaces are then described. Furthermore, a wide-ranging take on antipathogenic copper cold spray coatings are provided and consideration is given to the distinctive grain-boundary mediated copper ion diffusion pathways found in optimizable, highly deformed, copper cold spray material consolidations that enable pathogen inactivation on surfaces from direct contact. To conclude this literature review, analysis of how copper cold spray coatings can be employed as a preventative measure against COVID-19 was also presented in light of on-going debates surrounding SARS-CoV-2's non-primary, but non-negligible, secondary transmission pathway, and also presented in conjunction with the inevitability that future pathogens, which will be responsible for forthcoming global pandemics, may spread even more readily via fomite pathways too.
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Affiliation(s)
- Bryer C Sousa
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609-2280, USA.
| | - Christopher J Massar
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609-2280, USA
| | - Matthew A Gleason
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609-2280, USA
| | - Danielle L Cote
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609-2280, USA.
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38
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Ummer RP, Perumbilavil S, Jose J, Thomas S, Gopinath P, Kalarikkal N. Exploring the optical limiting, photocatalytic and antibacterial properties of the BiFeO 3-NaNbO 3 nanocomposite system. RSC Adv 2021; 11:8450-8458. [PMID: 35423392 PMCID: PMC8695222 DOI: 10.1039/d0ra09776d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/04/2021] [Indexed: 01/06/2023] Open
Abstract
Thin films of BiFeO3–NaNbO3 composites were fabricated in a PMMA matrix. XRD and HRTEM were used for structural investigations. The grain size and surface morphology of samples were analysed through HRTEM images. The self-cleaning property of any material accelerates its industrial applications. Hence, along with the optical limiting performance, the photocatalytic and antibacterial activity of BiFeO3–NaNbO3 composite samples were also studied. BiFeO3–NaNbO3 films fabricated in the PMMA matrix exhibit strong optical nonlinearity when excited by 5 ns laser pulses at 532 nm. The origin and magnitude of the observed optical nonlinearity were explained on the basis of the weak absorption saturation and strong excited state absorption. The photocatalytic performance of samples was analysed by dye degradation method using Methyl Orange dye. The dye degradation rate in the presence of the catalyst is heeded in a particular time interval, which exhibits the photocatalytic performance of the samples. The destruction of microbial organisms that are in contact with the material was contemplated, which could prove its antibacterial activity. The effect of the particle size on the photocatalytic activity was also investigated. Thin films of BiFeO3–NaNbO3 composites were fabricated in a PMMA matrix.![]()
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Affiliation(s)
- Rehana P Ummer
- International School of Photonics, Cochin University of Science and Technology Cochin 682022 India .,Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology Cochin 682022 India
| | - Sreekanth Perumbilavil
- Department of Applied Physics, Aalto University School of Science P.O. Box 15100 FI-00076 Aalto Finland
| | - Jiya Jose
- Department of Biotechnology, Cochin University of Science and Technology Cochin 682022 India
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University Kottayam Kerala 686560 India
| | - Pramod Gopinath
- International School of Photonics, Cochin University of Science and Technology Cochin 682022 India .,Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology Cochin 682022 India
| | - Nandakumar Kalarikkal
- School of Pure and Applied Physics, Mahatma Gandhi University Kottayam Kerala 686560 India .,International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University Kottayam Kerala 686560 India
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Zhang X, Yang C, Xi T, Zhao J, Yang K. Surface Roughness of Cu-Bearing Stainless Steel Affects Its Contact-Killing Efficiency by Mediating the Interfacial Interaction with Bacteria. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2303-2315. [PMID: 33395246 DOI: 10.1021/acsami.0c19655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Numerous studies have found that the surface topography affects the material antibacterial properties by reducing the attachment of bacteria on the surfaces without influencing the viability of the adhered cells. For Cu-bearing alloys with excellent contact-killing properties, bacterial adhesion on the surface is also accompanied by short-range interactions which regulate the toxic effects of the material surface against bacterial cells. Thus, the surface topography of Cu-bearing alloys, as an important factor dominating the exposure level of bacteria on the surfaces, should affect the subsequent contact-killing efficiency. In this work, our major focus was on the regulation mechanism of the surface features on the material-bacterial interactions. We correlated the surface properties including different surface roughnesses of Cu-bearing stainless steel (SS) with the bacterial damage pattern and attempted to clarify the role of surface roughness in mediating the contact-killing behavior of Cu-bearing SS. The results of both atomic force microscopy and scanning electron microscopy investigations showed that E. coli cells experienced the most rapid physical and mechanical damages after incubating with the diamond-polished Cu-bearing SS surface. The bacterial cells noticeably stiffened and the adhesion force significantly increased, as evidenced by force-distance curve measurements. Because of the enhanced hydrophobicity and higher surface potential of the diamond-polished surface, which strengthened the Lewis acid-base attractive forces and weakened the electrostatic barrier between the bacteria and the surface, a higher exposure surface for bacteria was generated. Furthermore, the contact-induced charge transfer, manifested by Cu ion burst release, and reactive oxygen species overexpression contribute to an efficient contact-killing process.
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Affiliation(s)
- Xinrui Zhang
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Chunguang Yang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Tong Xi
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Jinlong Zhao
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Ke Yang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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40
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Tarrahi R, Mahjouri S, Khataee A. A review on in vivo and in vitro nanotoxicological studies in plants: A headlight for future targets. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111697. [PMID: 33396028 DOI: 10.1016/j.ecoenv.2020.111697] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/01/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Owing to the unique properties and useful applications in numerous fields, nanomaterials (NMs) received a great attention. The mass production of NMs has raised major concern for the environment. Recently, some altered growth patterns in plants have been reported due to the plant-NMs interactions. However, for NMs safe applications in agriculture and medicine, a comprehensive understanding of bio-nano interactions is crucial. The main goal of this review article is to summarize the results of the toxicological studies that have shown the in vitro and in vivo interactions of NMs with plants. The toxicity mechanisms are briefly discussed in plants as the defense mechanism works to overcome the stress caused by NMs implications. Indeed, the impact of NMs on plants varies significantly with many factors including physicochemical properties of NMs, culture media, and plant species. To investigate the impacts, dose metrics is an important analysis for assaying toxicity and is discussed in the present article to broadly open up different aspects of nanotoxicological investigations. To access reliable quantification and measurement in laboratories, standardized methodologies are crucial for precise dose delivery of NMs to plants during exposure. Altogether, the information is significant to researchers to describe restrictions and future perspectives.
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Affiliation(s)
- Roshanak Tarrahi
- Health Promotion Research Center, Iran University of Medical Sciences, 14496-14535 Tehran, Iran
| | - Sepideh Mahjouri
- Department of Biological Sciences, Faculty of Basic Sciences, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russian Federation.
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41
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Bioactive Compounds for Skin Health: A Review. Nutrients 2021; 13:nu13010203. [PMID: 33445474 PMCID: PMC7827176 DOI: 10.3390/nu13010203] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/05/2021] [Accepted: 01/09/2021] [Indexed: 01/19/2023] Open
Abstract
Human skin is continually changing. The condition of the skin largely depends on the individual’s overall state of health. A balanced diet plays an important role in the proper functioning of the human body, including the skin. The present study draws attention to bioactive substances, i.e., vitamins, minerals, fatty acids, polyphenols, and carotenoids, with a particular focus on their effects on the condition of the skin. The aim of the study was to review the literature on the effects of bioactive substances on skin parameters such as elasticity, firmness, wrinkles, senile dryness, hydration and color, and to define their role in the process of skin ageing.
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42
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Bleichert P, Bütof L, Rückert C, Herzberg M, Francisco R, Morais PV, Grass G, Kalinowski J, Nies DH. Mutant Strains of Escherichia coli and Methicillin-Resistant Staphylococcus aureus Obtained by Laboratory Selection To Survive on Metallic Copper Surfaces. Appl Environ Microbiol 2020; 87:e01788-20. [PMID: 33067196 PMCID: PMC7755237 DOI: 10.1128/aem.01788-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/09/2020] [Indexed: 01/27/2023] Open
Abstract
Artificial laboratory evolution was used to produce mutant strains of Escherichia coli and methicillin-resistant Staphylococcus aureus (MRSA) able to survive on antimicrobial metallic copper surfaces. These mutants were 12- and 60-fold less susceptible to the copper-mediated contact killing process than their respective parent strains. Growth levels of the mutant and its parent in complex growth medium were similar. Tolerance to copper ions of the mutants was unchanged. The mutant phenotype remained stable over about 250 generations under nonstress conditions. The mutants and their respective parental strains accumulated copper released from the metallic surfaces to similar extents. Nevertheless, only the parental strains succumbed to copper stress when challenged on metallic copper surfaces, suffering complete destruction of the cell structure. Whole-genome sequencing and global transcriptome analysis were used to decipher the genetic alterations in the mutant strains; however, these results did not explain the copper-tolerance phenotypes on the systemic level. Instead, the mutants shared features with those of stressed bacterial subpopulations entering the early or "shallow" persister state. In contrast to the canonical persister state, however, the ability to survive on solid copper surfaces was adopted by the majority of the mutant strain population. This indicated that application of solid copper surfaces in hospitals and elsewhere has to be accompanied by strict cleaning regimens to keep the copper surfaces active and prevent evolution of tolerant mutant strains.IMPORTANCE Microbes are rapidly killed on solid copper surfaces by contact killing. Copper surfaces thus have an important role to play in preventing the spread of nosocomial infections. Bacteria adapt to challenging natural and clinical environments through evolutionary processes, for instance, by acquisition of beneficial spontaneous mutations. We wish to address the question of whether mutants can be selected that have evolved to survive contact killing on solid copper surfaces. We isolated such mutants from Escherichia coli and methicillin-resistant Staphylococcus aureus (MRSA) by artificial laboratory evolution. The ability to survive on solid copper surfaces was a stable phenotype of the mutant population and not restricted to a small subpopulation. As a consequence, standard operation procedures with strict hygienic measures are extremely important to prevent the emergence and spread of copper-surface-tolerant persister-like bacterial strains if copper surfaces are to be sustainably used to limit the spread of pathogenic bacteria, e.g., to curb nosocomial infections.
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Affiliation(s)
| | - Lucy Bütof
- Martin-Luther University Halle-Wittenberg, Institute of Molecular Microbiology, Halle (Saale), Germany
| | | | - Martin Herzberg
- Martin-Luther University Halle-Wittenberg, Institute of Molecular Microbiology, Halle (Saale), Germany
| | - Romeu Francisco
- CEMMPRE-Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Paula V Morais
- CEMMPRE-Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Gregor Grass
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - Jörn Kalinowski
- Bielefeld University, Center for Biotechnology, Bielefeld, Germany
| | - Dietrich H Nies
- Martin-Luther University Halle-Wittenberg, Institute of Molecular Microbiology, Halle (Saale), Germany
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43
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Zhao W, Deng J, Ren Y, Xie L, Li W, Wang Q, Li S, Liu S. Antibacterial application and toxicity of metal-organic frameworks. Nanotoxicology 2020; 15:311-330. [PMID: 33259255 DOI: 10.1080/17435390.2020.1851420] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Metal-organic frameworks (MOFs), which are also referred to as coordination polymers, have been widely used in adsorption separation and catalysis, especially in the field of physical chemistry in the past few years, because of their unique physical structure and potential chemical properties. In recent years, particularly with the continuous expansion of the research field, deepening of research levels, and sustained advancements in science and technology, powerful and diverse MOFs that have demonstrated great biomedical application potential have been successively developed. Consequently, this study summarizes the origin, development, and common synthesis methods of MOFs, with major emphasis on their antibacterial application and safety evaluation in biomedicine.
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Affiliation(s)
- Wanling Zhao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China.,Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinqiong Deng
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China.,Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yan Ren
- Guangdong Provincial People's Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liyuan Xie
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Weirong Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shengqing Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Sijun Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
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44
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Copper-containing bioactive glasses and glass-ceramics: From tissue regeneration to cancer therapeutic strategies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 121:111741. [PMID: 33579436 DOI: 10.1016/j.msec.2020.111741] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/09/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023]
Abstract
Copper is one of the most used therapeutic metallic elements in biomedicine, ranging from antibacterial approaches to cancer theranostics. This element could be easily incorporated into different types of biomaterials; specifically, copper-doped bioactive glasses (BGs) provide great opportunities for biomedical engineers and clinicians as regards their excellent biocompatibility and regenerative potential. Although copper-incorporated BGs are mostly used in bone tissue engineering, accelerated soft tissue healing is achievable, too, with interesting potentials in wound treatment and skin repair. Copper can modulate the physico-chemical properties of BGs (e.g., reactivity with bio-fluids) and improve their therapeutic potential. Improving cell proliferation, promoting angiogenesis, reducing or even prohibiting bacterial growth are counted as prominent biological features of copper-doped BGs. Recent studies have also suggested the suitability of copper-doped BGs in cancer photothermal therapy (PTT). However, more research is needed to determine the extent to which copper-doped BGs are actually applicable for tissue engineering and regenerative medicine strategies in the clinic. Moreover, copper-doped BGs in combination with polymers may be considered in the future to produce relatively soft, pliable composites and printable inks for use in biofabrication.
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45
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Wilson J, Munizzi J, Erhardt AM. Preservation methods for the isotopic composition of dissolved carbon species in non-ideal conditions. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8903. [PMID: 33463814 DOI: 10.1002/rcm.8903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/17/2020] [Accepted: 07/20/2020] [Indexed: 06/12/2023]
Abstract
RATIONALE The stable carbon isotope compositions of dissolved inorganic carbon (δ13CDIC) and dissolved organic carbon (δ13CDOC) are readily affected by post-sampling microbial activity if not adequately preserved. Existing preservation methods require rapid chilling, analysis, and/or toxic chemicals, all challenging to use safely in the field and during remote field seasons. Therefore, a preservation method that is safe but also effective over a range of storage times is needed when sampling waters at very remote sites. METHODS Two samples, with different dissolved inorganic carbon (DIC) and dissolved organic carbon (DOC) concentrations, were filtered with a 0.2-μm filter and preserved with six different methods, mercuric chloride, copper sulfate, phosphoric acid, benzalkonium chloride, zinc chloride, hydrochloric acid, and a filter-only control. These samples were held at 4°C, 22°C, or 35°C. Regular measurement of the DIC and DOC δ13C values were made over the following 60 days for δ13CDIC and 66 days for δ13CDOC. RESULTS: Over the course of the experiment, mercuric chloride, copper sulfate, zinc chloride, and benzalkonium chloride resulted in δ13CDIC fractionation at both 4°C and 22°C. Only filtering to 0.2 μm at the time of collection, with or without acidification with phosphoric acid, resulted in minimal isotopic fractionation at both 4°C and 22°C and over the entirety of the experiment. For δ13CDOC values, only filtering to 0.2 μm minimized fractionation for both bulk and vial storage over 66 days at 22°C. CONCLUSIONS Filtering to 0.2 μm at the time of collection is more effective than the use of toxic chemicals for measuring δ13CDIC and δ13CDOC values. Phosphoric acid is as effective as only filtering for δ13CDIC and may be ideal depending on sampling considerations. These results demonstrate not only that water samples can be preserved for δ13CDIC and δ13CDOC analysis for long periods, but that preservation is best accomplished with non-toxic or low-toxicity methods.
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Affiliation(s)
- Jonathan Wilson
- Department of Earth and Environmental Sciences, University of Kentucky, Slone Research Building, 121 Washington Ave, Lexington, KY, 40506, USA
| | - Jordon Munizzi
- Department of Earth and Environmental Sciences, University of Kentucky, Slone Research Building, 121 Washington Ave, Lexington, KY, 40506, USA
| | - Andrea M Erhardt
- Department of Earth and Environmental Sciences, University of Kentucky, Slone Research Building, 121 Washington Ave, Lexington, KY, 40506, USA
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Pontin KP, Borges KA, Furian TQ, Carvalho D, Wilsmann DE, Cardoso HRP, Alves AK, Chitolina GZ, Salle CTP, Moraes HLDS, do Nascimento VP. Antimicrobial activity of copper surfaces against biofilm formation by Salmonella Enteritidis and its potential application in the poultry industry. Food Microbiol 2020; 94:103645. [PMID: 33279070 DOI: 10.1016/j.fm.2020.103645] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/04/2020] [Accepted: 09/15/2020] [Indexed: 10/23/2022]
Abstract
As a consequence of developing antimicrobial resistance to disinfectants, copper, which exhibits antimicrobial activity, has been studied as a possible alternative to the use of stainless steel surfaces. The aim was to evaluate the antimicrobial activity of copper surfaces in preventing biofilm formation by Salmonella Enteritidis and to determine their corrosive capacity. Strains of S. Enteritidis were incubated at 4 °C, 12 °C, and 25 °C with 1 cm2 coupons of electrolytic copper (99.9% Cu), brass (70% Cu), copper coated with tin, and stainless steel (control). A planktonic cell-suspension assay was used, followed by serial dilutions and bacterial counts. The corrosion test was performed with two disinfectants: benzalkonium chloride and sodium hypochlorite (100, 200, and 400 ppm). There was a significant reduction in biofilm production (log10 CFU cm-2) on the copper (2.64 at 4 °C, 4.20 at 12 °C, 4.56 at 25 °C) and brass (2.79 at 4 °C, 3.49 at 12 °C, 4.55 at 25 °C) surfaces compared to the control (5.68 at 4 °C, 5.89 at 12 °C, 6.01 at 25 °C). The antimicrobial surfaces showed uniform corrosion similar to that of surfaces generally used. These results demonstrated the effectiveness of copper surfaces in reducing S. Enteritidis and suggest they can be used as a complementary antimicrobial to control for this pathogen.
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Affiliation(s)
- Karine Patrin Pontin
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Karen Apellanis Borges
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Thales Quedi Furian
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Daiane Carvalho
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Daiane Elisa Wilsmann
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Henrique Ribeiro Piaggio Cardoso
- Laboratório de Metalurgia Física, Escola de Engenharia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil.
| | - Annelise Kopp Alves
- Departamento de Materiais, Escola de Engenharia, Universidade Federal do Rio Grande do Sul, Avenida Osvaldo Aranha 99, 90035-190, Porto Alegre, RS, Brazil.
| | - Gabriela Zottis Chitolina
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Carlos Tadeu Pippi Salle
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Hamilton Luiz de Souza Moraes
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
| | - Vladimir Pinheiro do Nascimento
- Centro de Diagnóstico e Pesquisa em Patologia Aviária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, 91540-00, Porto Alegre, RS, Brazil.
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Abudhahir M, Saleem A, Paramita P, Kumar SD, Tze‐Wen C, Selvamurugan N, Moorthi A. Polycaprolactone fibrous electrospun scaffolds reinforced with copper doped wollastonite for bone tissue engineering applications. J Biomed Mater Res B Appl Biomater 2020; 109:654-664. [DOI: 10.1002/jbm.b.34729] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/20/2020] [Accepted: 09/02/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Mohamed Abudhahir
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam Chennai Tamil Nadu India
| | - Azeena Saleem
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam Chennai Tamil Nadu India
| | - Pragyan Paramita
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam Chennai Tamil Nadu India
| | - Sukumar Dinesh Kumar
- Department of Biomedical Science, Peptide Biochemistry Chosun University Gwangju Republic of Korea
| | - Chung Tze‐Wen
- Department of Biomedical Engineering National Yang‐Ming University Taipei Taiwan
| | - Nagarajan Selvamurugan
- Tissue Engineering and Cancer Research Laboratory, Department of Biotechnology SRM University Kattankulathur Tamil Nadu India
| | - Ambigapathi Moorthi
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam Chennai Tamil Nadu India
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Surface Disinfection to Protect against Microorganisms: Overview of Traditional Methods and Issues of Emergent Nanotechnologies. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10176040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Sterilization methods for individuals and facilities are extremely important to enable human beings to continue the basic tasks of life and to enable safe and continuous interaction of citizens in society when outbreaks of viral pandemics such as the coronavirus. Sterilization methods, their availability in gatherings, and the efficiency of their work are among the important means to contain the spread of viruses and epidemics and enable societies to practice their activities almost naturally. Despite the effective solutions given by traditional methods of surface disinfection, modern nanotechnology has proven to be an emergent innovation to protect against viruses. On this note, recent scientific breakthroughs have highlighted the ability of nanospray technology to attach to air atoms in terms of size and time-period of existence as a sterilizer for renewed air in large areas for human gatherings. Despite the ability of this method to control the outbreak of infections, the mutation of bactericidal mechanisms presents a great issue for scientists. In recent years, science has explored a more performant approach and techniques based on a surface-resistance concept. The most emergent is the self-defensive antimicrobial known as the self-disinfection surface. It consists of the creation of a bacteria cell wall to resist the adhesion of bacteria or to kill bacteria by chemical or physical changes. Besides, plasma-mediated virus inactivation was shown as a clean, effective, and human healthy solution for surface disinfection. The purpose of this article is to deepen the discussion on the threat of traditional methods of surface disinfection and to assess the state of the art and potential solutions using emergent nanotechnology.
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Green and cost-effective synthesis of copper nanoparticles by extracts of non-edible and waste plant materials from Vaccinium species: Characterization and antimicrobial activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111453. [PMID: 33321590 DOI: 10.1016/j.msec.2020.111453] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/10/2020] [Accepted: 08/25/2020] [Indexed: 12/22/2022]
Abstract
The aim of this work was the green synthesis of copper nanoparticles (Cu-NPs) using aqueous extracts of (i) bilberry (Vaccinium myrtillus L.) waste residues from the production of fruit juices and (ii) non-edible "false bilberry" fruits (Vaccinium uliginosum L. subsp. gaultherioides). Different cupric salts (CuCl2, Cu(CH3COO)2 and Cu(NO3)2) were used for the synthesis. The formation of stable nanoparticles (CuNPs) was assessed by transmission electron microscopy and the oxidation state of copper in these aggregates was followed by X-ray photoelectron spectroscopy. The polyphenol composition of the extracts was characterized, before and after the synthesis, using spectrophotometric methods (i.e. total soluble polyphenols and total monomeric anthocyanins) and high-performance liquid chromatography coupled with tandem mass spectrometry (i.e. individual anthocyanins). Polyphenol concentration in the extracts was found to decrease after the synthesis, indicating their active participation to the processes, which led to the formation of Cu-NPs. The antimicrobial activity of Cu-NPs, berry extracts, and cupric ion solutions were analysed by broth microdilution and time-kill assays, on prokaryotic and eukaryotic models. The antimicrobial activity of Cu-NPs, especially those derived from bilberry waste residues, appeared to be higher for both Gram-negative and Gram-positive bacteria, and for fungi, compared to the ones of its single components (cupric salts and berry extracts). Therefore, Cu-NPs from the green synthesis here proposed can be considered as a cost-effective sanitization tool with a wide spectrum of action.
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Wan Y, Xu W, Ren X, Wang Y, Dong B, Wang L. Microporous Frameworks as Promising Platforms for Antibacterial Strategies Against Oral Diseases. Front Bioeng Biotechnol 2020; 8:628. [PMID: 32596233 PMCID: PMC7304413 DOI: 10.3389/fbioe.2020.00628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 05/22/2020] [Indexed: 12/21/2022] Open
Abstract
Nowadays, the heavy burden of oral diseases such as dental caries, periodontitis, endodontic infections, etc., and their consequences on the patients' quality of life indicate a strong need for developing effective therapies. Bacterial infections played an important role in the field of oral diseases, in-depth insight of such oral diseases have given rise to the demand for antibacterial therapeutic strategies. Recently, microporous frameworks have attracted tremendous interest in antibacterial application due to their well-defined porous structures for drug delivery. In addition, intensive efforts have been made to enhance the antibacterial performance of microporous frameworks, such as ion doping, photosensitizer incorporation as building blocks, and surface modifications. This review article aims on the major recent developments of microporous frameworks for antibacterial applications against oral diseases. The first part of this paper puts concentration on the cutting-edge researches on the versatile antibacterial strategies of microporous materials via drug delivery, inherent activity, and structural modification. The second part discusses the antibacterial applications of microporous frameworks against oral diseases. The applications of microporous frameworks not only have promising therapeutic potential to inhibit bacterial plaque-initiated oral infectious diseases, but also have a wide applicability to other biomedical applications.
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Affiliation(s)
- Yao Wan
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
| | - Wenzhou Xu
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
- Department of Periodontology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Xuan Ren
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
| | - Yu Wang
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Biao Dong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Lin Wang
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
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