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Gazzola V, Grisoli P, Amendola V, Dacarro G, Mangano C, Pallavicini P, Poggi A, Rossi S, Vigani B, Taglietti A. A Supramolecular Approach to Antimicrobial Surfaces. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27175731. [PMID: 36080495 PMCID: PMC9457607 DOI: 10.3390/molecules27175731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 11/28/2022]
Abstract
In this paper, we report on the preparation of Imidazole-functionalized glass surfaces, demonstrating the ability of a dinuclear Cu(II) complex of a macrocyclic ligand to give a “cascade” interaction with the deprotonated forms of grafted imidazole moieties. In this way, we realized a prototypal example of an antimicrobial surface based on a supramolecular approach, obtaining a neat microbicidal effect using low amounts of the described copper complex.
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Affiliation(s)
- Valentina Gazzola
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Pietro Grisoli
- Department of Drug Sciences, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Valeria Amendola
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Giacomo Dacarro
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Carlo Mangano
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Piersandro Pallavicini
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Antonio Poggi
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Barbara Vigani
- Department of Drug Sciences, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
| | - Angelo Taglietti
- Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100 Pavia, Italy
- Correspondence:
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2
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Functionalized Self-Assembled Monolayers: Versatile Strategies to Combat Bacterial Biofilm Formation. Pharmaceutics 2022; 14:pharmaceutics14081613. [PMID: 36015238 PMCID: PMC9415113 DOI: 10.3390/pharmaceutics14081613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/29/2022] [Accepted: 07/30/2022] [Indexed: 11/16/2022] Open
Abstract
Bacterial infections due to biofilms account for up to 80% of bacterial infections in humans. With the increased use of antibiotic treatments, indwelling medical devices, disinfectants, and longer hospital stays, antibiotic resistant infections are sharply increasing. Annual deaths are predicted to outpace cancer and diabetes combined by 2050. In the past two decades, both chemical and physical strategies have arisen to combat biofilm formation on surfaces. One such promising chemical strategy is the formation of a self-assembled monolayer (SAM), due to its small layer thickness, strong covalent bonds, typically facile synthesis, and versatility. With the goal of combating biofilm formation, the SAM could be used to tether an antibacterial agent such as a small-molecule antibiotic, nanoparticle, peptide, or polymer to the surface, and limit the agent’s release into its environment. This review focuses on the use of SAMs to inhibit biofilm formation, both on their own and by covalent grafting of a biocidal agent, with the potential to be used in indwelling medical devices. We conclude with our perspectives on ongoing challenges and future directions for this field.
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3
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Non-migrating active antibacterial packaging and its application in grass carp fillets. Food Packag Shelf Life 2022. [DOI: 10.1016/j.fpsl.2021.100786] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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4
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Efficient Route for the Preparation of Composite Resin Incorporating Silver Nanoparticles with Enhanced Antibacterial Properties. NANOMATERIALS 2022; 12:nano12030471. [PMID: 35159816 PMCID: PMC8839352 DOI: 10.3390/nano12030471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/23/2022] [Accepted: 01/26/2022] [Indexed: 12/04/2022]
Abstract
An efficient and facile route for the immobilization of silver (Ag) nanoparticles (NPs) in anion exchange resin beads with different silver loading is proposed. In this method, BH4− ions were first introduced into chloride-form resin through an ion exchange process with Cl− ions, followed by in-situ chemical reduction of Ag+ ions at the surface of the resin to form metallic Ag nanoparticles. Morphology and structure of the resulting Ag-resin nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), Fourier transform infra-red (FTIR), inductively coupled plasma-optical emission spectrometry (ICP-OES), and thermogravimetry analysis (TGA). The results confirmed the presence of smaller diameter Ag NPs incorporated into the resin beads having an average diameter on the order of 10 nm with a few Ag NP clusters of 20–100 nm. The nanoparticles were homogeneously distributed throughout the resin. There were no dramatic increases in average particle sizes even at very high Ag loadings. The resin retained its structure and stability, allowing higher stability of immobilized AgNPs than the colloidal ones. The Ag-loaded resins made with 50 mM AgNO3 were tested for antibacterial activity in vitro against Escherichia coli (E. coli) as a model microbial contaminant in water. Results showed greater than 99% bacterial inhibition within 3 h of exposure. The resin form offers greater ease of handling, long-term storage at room temperature, reusability in repeated reactions, and reduces the risk of environmental contamination.
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Metal Complexes—A Promising Approach to Target Biofilm Associated Infections. Molecules 2022; 27:molecules27030758. [PMID: 35164021 PMCID: PMC8838073 DOI: 10.3390/molecules27030758] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/19/2022] [Accepted: 01/23/2022] [Indexed: 02/06/2023] Open
Abstract
Microbial biofilms are represented by sessile microbial communities with modified gene expression and phenotype, adhered to a surface and embedded in a matrix of self-produced extracellular polymeric substances (EPS). Microbial biofilms can develop on both prosthetic devices and tissues, generating chronic and persistent infections that cannot be eradicated with classical organic-based antimicrobials, because of their increased tolerance to antimicrobials and the host immune system. Several complexes based mostly on 3D ions have shown promising potential for fighting biofilm-associated infections, due to their large spectrum antimicrobial and anti-biofilm activity. The literature usually reports species containing Mn(II), Ni(II), Co(II), Cu(II) or Zn(II) and a large variety of multidentate ligands with chelating properties such as antibiotics, Schiff bases, biguanides, N-based macrocyclic and fused rings derivatives. This review presents the progress in the development of such species and their anti-biofilm activity, as well as the contribution of biomaterials science to incorporate these complexes in composite platforms for reducing the negative impact of medical biofilms.
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Construction and Characterizations of Antibacterial Surfaces Based on Self-Assembled Monolayer of Antimicrobial Peptides (Pac-525) Derivatives on Gold. COATINGS 2021. [DOI: 10.3390/coatings11091014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Infection that is related to implanted biomaterials is a serious issue in the clinic. Antimicrobial peptides (AMPs) have been considered as an ideal alternative to traditional antibiotic drugs, for the treatment of infections, while some problems, such as aggregation and protein hydrolysis, are still the dominant concerns that compromise their antimicrobial efficiency in vivo. Methods: In this study, antimicrobial peptides underwent self-assembly on gold substrates, forming good antibacterial surfaces, with stable antibacterial behavior. The antimicrobial ability of AMPs grafted on the surfaces, with or without glycine spaces or a primer layer, was evaluated. Results: Specifically, three Pac-525 derivatives, namely, Ac-CGn-KWRRWVRWI-NH2 (n = 0, 2, or 6) were covalently grafted onto gold substrates via the self-assembling process for inhibiting the growth of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Furthermore, the alkanethiols HS(CH)10SH were firstly self-assembled into monolayers, as a primer layer (SAM-SH) for the secondary self-assembly of Pac-525 derivatives, to effectively enhance the bactericidal performance of the grafted AMPs. The -(CH)10-S-S-G6Pac derivative was highly effective against S. aureus and E. coli, and reduced the viable amount of E. coli and S. aureus to 0.4% and 33.2%, respectively, after 24 h of contact. In addition, the immobilized AMPs showed good biocompatibility, promoting bone marrow stem cell proliferation. Conclusion: the self-assembled monolayers of the Pac-525 derivatives have great potential as a novel therapeutic method for the treatment of implanted biomaterial infections.
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Benčina M, Resnik M, Starič P, Junkar I. Use of Plasma Technologies for Antibacterial Surface Properties of Metals. Molecules 2021; 26:1418. [PMID: 33808010 PMCID: PMC7961478 DOI: 10.3390/molecules26051418] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Bacterial infections of medical devices present severe problems connected with long-term antibiotic treatment, implant failure, and high hospital costs. Therefore, there are enormous demands for innovative techniques which would improve the surface properties of implantable materials. Plasma technologies present one of the compelling ways to improve metal's antibacterial activity; plasma treatment can significantly alter metal surfaces' physicochemical properties, such as surface chemistry, roughness, wettability, surface charge, and crystallinity, which all play an important role in the biological response of medical materials. Herein, the most common plasma treatment techniques like plasma spraying, plasma immersion ion implantation, plasma vapor deposition, and plasma electrolytic oxidation as well as novel approaches based on gaseous plasma treatment of surfaces are gathered and presented. The latest results of different surface modification approaches and their influence on metals' antibacterial surface properties are presented and critically discussed. The mechanisms involved in bactericidal effects of plasma-treated surfaces are discussed and novel results of surface modification of metal materials by highly reactive oxygen plasma are presented.
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Affiliation(s)
| | | | | | - Ita Junkar
- Department of Surface Engineering, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (M.B.); (M.R.); (P.S.)
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Colilla M, Vallet-Regí M. Targeted Stimuli-Responsive Mesoporous Silica Nanoparticles for Bacterial Infection Treatment. Int J Mol Sci 2020; 21:E8605. [PMID: 33203098 PMCID: PMC7696808 DOI: 10.3390/ijms21228605] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
The rise of antibiotic resistance and the growing number of biofilm-related infections make bacterial infections a serious threat for global human health. Nanomedicine has entered into this scenario by bringing new alternatives to design and develop effective antimicrobial nanoweapons to fight against bacterial infection. Among them, mesoporous silica nanoparticles (MSNs) exhibit unique characteristics that make them ideal nanocarriers to load, protect and transport antimicrobial cargoes to the target bacteria and/or biofilm, and release them in response to certain stimuli. The combination of infection-targeting and stimuli-responsive drug delivery capabilities aims to increase the specificity and efficacy of antimicrobial treatment and prevent undesirable side effects, becoming a ground-breaking alternative to conventional antibiotic treatments. This review focuses on the scientific advances developed to date in MSNs for infection-targeted stimuli-responsive antimicrobials delivery. The targeting strategies for specific recognition of bacteria are detailed. Moreover, the possibility of incorporating anti-biofilm agents with MSNs aimed at promoting biofilm penetrability is overviewed. Finally, a comprehensive description of the different scientific approaches for the design and development of smart MSNs able to release the antimicrobial payloads at the infection site in response to internal or external stimuli is provided.
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Affiliation(s)
- Montserrat Colilla
- Departamento de Química en Ciencias Farmacéuticas, Unidad de Química Inorgánica y Bioinorgánica, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 28040 Madrid, Spain
| | - María Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Unidad de Química Inorgánica y Bioinorgánica, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 28040 Madrid, Spain
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Staneva D, Vasileva-Tonkova E, Yordanova S, Kukeva R, Stoyanova R, Grabchev I. Spectral characterization, antimicrobial and antibiofilm activity of poly(propylene imine) metallodendrimers in solution and applied onto cotton fabric. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2020. [DOI: 10.1080/1023666x.2020.1796105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Evgenia Vasileva-Tonkova
- Department of Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Stanislava Yordanova
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Rositsa Kukeva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Radostina Stoyanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Ivo Grabchev
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
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The Effectiveness of Nafion-Coated Stainless Steel Surfaces for Inhibiting Bacillus Subtilis Biofilm Formation. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10145001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Stainless steel is one of most commonly used materials in the world; however, biofilms on the surfaces of stainless steel cause many serious problems. In order to find effective methods of reducing bacterial adhesion to stainless steel, and to investigate the role of electrostatic effects during the formation of biofilms, this study used a stainless steel surface that was negatively charged by being coated with Nafion which was terminated by sulfonic groups. The results showed that the roughness of stainless steel discs coated with 1% Nafion was similar to an uncoated surface; however the hydrophobicity increased, and the Nafion-coated surface reduced the adhesion of Bacillus subtilis by 75% compared with uncoated surfaces. Therefore, a facile way to acquire antibacterial stainless steel was found, and it is proved that electrostatic effects have a significant influence on the formation of biofilms.
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11
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Self-Assembled Monolayers of Copper Sulfide Nanoparticles on Glass as Antibacterial Coatings. NANOMATERIALS 2020; 10:nano10020352. [PMID: 32085548 PMCID: PMC7075189 DOI: 10.3390/nano10020352] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/10/2020] [Accepted: 02/14/2020] [Indexed: 12/12/2022]
Abstract
We developed an easy and reproducible synthetic method to graft a monolayer of copper sulfide nanoparticles (CuS NP) on glass and exploited their particular antibacterial features. Samples were fully characterized showing a good stability, a neat photo-thermal effect when irradiated in the Near InfraRed (NIR) region (in the so called “biological window”), and the ability to release controlled quantities of copper in water. The desired antibacterial activity is thus based on two different mechanisms: (i) slow and sustained copper release from CuS NP-glass samples, (ii) local temperature increase caused by a photo-thermal effect under NIR laser irradiation of CuS NP–glass samples. This behavior allows promising in vivo applications to be foreseen, ensuring a “static” antibacterial protection tailored to fight bacterial adhesion in the critical timescale of possible infection and biofilm formation. This can be reinforced, when needed, by a photo-thermal action switchable on demand by an NIR light.
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12
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Gascón E, Maisanaba S, Otal I, Valero E, Repetto G, Jones PG, Jiménez J. (Amino)cyclophosphazenes as Multisite Ligands for the Synthesis of Antitumoral and Antibacterial Silver(I) Complexes. Inorg Chem 2020; 59:2464-2483. [PMID: 31984738 DOI: 10.1021/acs.inorgchem.9b03334] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The reactivity of the multisite (amino)cyclotriphosphazene ligands, [N3P3(NHCy)6] and [N3P3(NHCy)3(NMe2)3], has been explored in order to obtain silver(I) metallophosphazene complexes. Two series of cationic silver(I) metallophosphazenes were obtained and characterized: [N3P3(NHCy)6{AgL}n](TfO)n [n = 2, L = PPh3 (2), PPh2Me (4); n = 3, L = PPh3 (3), PPh2Me (5), TPA (TPA = 1,3,5-triaza-7-phosphaadamantane, 6)] and nongem-trans-[N3P3(NHCy)3(NMe2)3{AgL}n](TfO)n [n = 2, L = PPh3 (7), PPh2Me (9); n = 3, L = PPh3 (8), PPh2Me (10)]. 5, 7, and 9 have also been characterized by single-crystal X-ray diffraction, thereby allowing key bonding information to be obtained. Compounds 2-6, 9, and 10 were screened for in vitro cytotoxic activity against two tumor human cell lines, MCF7 (breast adenocarcinoma) and HepG2 (hepatocellular carcinoma), and for antimicrobial activity against five bacterial species including Gram-positive, Gram-negative, and Mycobacteria strains. Both the IC50 and MIC values revealed excellent biological activity for these metal complexes, compared with their precursors and cisplatin and also AgNO3 and silver sulfadiazine, respectively. Both IC50 and MIC values are among the lowest values found for any silver derivatives against the cell lines and bacterial strains used in this work. The structure-activity relationships were clear. The most cytotoxic and antimicrobial derivatives were those with the triphenylphosphane and [N3P3(NHCy)6] ligands. A significant improvement in the activity was also observed upon a rise in the number of silver atoms linked to the phosphazene ring.
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Affiliation(s)
- Elena Gascón
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC , Pedro Cerbuna 12 , 50009 Zaragoza , Spain
| | - Sara Maisanaba
- Departamento de Biología Molecular e Ingeniería Bioquímica, Área de Toxicología , Universidad Pablo de Olavide , Ctra. Utrera, Km 1 , 41013 Sevilla , Spain
| | - Isabel Otal
- Grupo de Genética de Micobacterias, Departamento de Microbiología, Medicina Preventiva y Salud Pública , Universidad de Zaragoza , Zaragoza 50009 , Spain.,Instituto de Salud Carlos III , CIBER de Enfermedades Respiratorias , E-28029 Madrid , Spain
| | - Eva Valero
- Departamento de Biología Molecular e Ingeniería Bioquímica, Área Nutrición y Bromatología , Universidad Pablo de Olavide , Ctra. Utrera, Km 1 , 41013 Sevilla , Spain
| | - Guillermo Repetto
- Departamento de Biología Molecular e Ingeniería Bioquímica, Área de Toxicología , Universidad Pablo de Olavide , Ctra. Utrera, Km 1 , 41013 Sevilla , Spain
| | - Peter G Jones
- Institut für Anorganische und Analytische Chemie , Technische Universität Braunschweig , Hagenring 30 , D-38106 Braunschweig , Germany
| | - Josefina Jiménez
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC , Pedro Cerbuna 12 , 50009 Zaragoza , Spain
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Kalpana D, Han JH, Park WS, Lee SM, Wahab R, Lee YS. Green biosynthesis of silver nanoparticles using Torreya nucifera and their antibacterial activity. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.08.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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14
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Sorzabal-Bellido I, Diaz-Fernandez YA, Susarrey-Arce A, Skelton AA, McBride F, Beckett AJ, Prior IA, Raval R. Exploiting Covalent, H-Bonding, and π–π Interactions to Design Antibacterial PDMS Interfaces That Load and Release Salicylic Acid. ACS APPLIED BIO MATERIALS 2019; 2:4801-4811. [DOI: 10.1021/acsabm.9b00562] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ioritz Sorzabal-Bellido
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Yuri A. Diaz-Fernandez
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Arturo Susarrey-Arce
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Adam A. Skelton
- Department of Chemistry, University of Liverpool, Liverpool L69 3BX, U.K
- School of Health Sciences, University of KwaZulu-Natal, Westville campus, Durban 4000, South Africa
| | - Fiona McBride
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | | | - Ian A. Prior
- Biomedical EM Unit, University of Liverpool, Liverpool L69 3BX, U.K
| | - Rasmita Raval
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
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15
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Taglietti A, Dacarro G, Barbieri D, Cucca L, Grisoli P, Patrini M, Arciola CR, Pallavicini P. High Bactericidal Self-Assembled Nano-Monolayer of Silver Sulfadiazine on Hydroxylated Material Surfaces. MATERIALS 2019; 12:ma12172761. [PMID: 31466275 PMCID: PMC6748069 DOI: 10.3390/ma12172761] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 02/06/2023]
Abstract
Anti-infective surfaces are a modern strategy to address the issue of infection related to the clinical use of materials for implants and medical devices. Nanocoatings, with their high surface/mass ratio, lend themselves to being mono-layered on the material surfaces to release antibacterial molecules and prevent bacterial adhesion. Here, a “layer-by-layer” (LbL) approach to achieve a self-assembled monolayer (SAM) with high microbicidal effect on hydroxylated surfaces is presented, exploiting the reaction between a monolayer of thiolic functions on glass/quartz surfaces and a newly synthesized derivative of the well-known antibacterial compound silver sulfadiazine. Using several different techniques, it is demonstrated that a nano-monolayer of silver sulfadiazine is formed on the surfaces. The surface-functionalized materials showed efficient bactericidal effect against both Gram-positive and Gram-negative bacteria. Interestingly, bactericidal self-assembled nano-monolayers of silver sulfadiazine could be achieved on a large variety of materials by simply pre-depositing glass-like SiO2 films on their surfaces.
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Affiliation(s)
- Angelo Taglietti
- Dipartimento di Chimica, Sezione di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy.
| | - Giacomo Dacarro
- Dipartimento di Chimica, Sezione di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy.
| | - Daniele Barbieri
- Dipartimento di Chimica, Sezione di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy
| | - Lucia Cucca
- Dipartimento di Chimica, Sezione di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy
| | - Pietro Grisoli
- Dipartimento di Scienze del Farmaco, Università di Pavia, viale Taramelli 10, 27100 Pavia, Italy
| | - Maddalena Patrini
- Dipartimento di Fisica, "A. Volta", Università di Pavia, via Bassi 6, 27100 Pavia, Italy
| | - Carla Renata Arciola
- Laboratorio di Patologia delle Infezioni Associate all'Impianto, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy.
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, via San Giacomo 14, 40126 Bologna, Italy.
| | - Piersandro Pallavicini
- Dipartimento di Chimica, Sezione di Chimica Generale, Università di Pavia, viale Taramelli 12, 27100 Pavia, Italy
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16
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Abstract
Antibacterial materials and surfaces designed and built using the toolbox of nanotechnology are becoming the object of an increasingly boosting interest, responding to the pan-drug resistant bacteria emergency [...]
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17
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Sierra MA, Casarrubios L, de la Torre MC. Bio-Organometallic Derivatives of Antibacterial Drugs. Chemistry 2019; 25:7232-7242. [PMID: 30730065 DOI: 10.1002/chem.201805985] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/05/2019] [Indexed: 12/11/2022]
Abstract
Overuse and misuse of antibacterial drugs has resulted in bacteria resistance and in an increase in mortality rates due to bacterial infections. Therefore, there is an imperative necessity of new antibacterial drugs. Bio-organometallic derivatives of antibacterial agents offer an opportunity to discover new active antibacterial drugs. These compounds are well-characterized products and, in several examples, their antibacterial activities have been studied. Both inhibition of the antibacterial activity and strong increase in the antibiotic activity of the parent drug have been found. The synthesis of the main classes of bio-organometallic derivatives of these drugs, as well as examples of the use of structure-activity relation (SAR) studies to increase the activity and to understand the mode of action of bio-organometallic antimicrobial peptides (BOAMPs) and platensimicyn bio-organometallic mimics is presented in this article.
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Affiliation(s)
- Miguel A Sierra
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
| | - Luis Casarrubios
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
| | - María C de la Torre
- Consejo Superior de Investigaciones Científicas (CSIC), Instituto de Química Orgánica General, Juan de la Cierva 3, 28006, Madrid, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense, 28040, Madrid, Spain
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18
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Zhang J, Du J, Wang J, Wang Y, Wei C, Li M. Vertical Step‐Growth Polymerization Driven by Electrochemical Stimuli from an Electrode. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Zhang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of the Chinese Academy of Sciences Beijing 100049 China
| | - Jia Du
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
| | - Jinxin Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of Science and Technology of China Hefei 230026 China
| | - Yanfang Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
| | - Chang Wei
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of Science and Technology of China Hefei 230026 China
| | - Mao Li
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of the Chinese Academy of Sciences Beijing 100049 China
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19
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Zhang J, Du J, Wang J, Wang Y, Wei C, Li M. Vertical Step‐Growth Polymerization Driven by Electrochemical Stimuli from an Electrode. Angew Chem Int Ed Engl 2018; 57:16698-16702. [DOI: 10.1002/anie.201809567] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Indexed: 01/27/2023]
Affiliation(s)
- Jian Zhang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of the Chinese Academy of Sciences Beijing 100049 China
| | - Jia Du
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
| | - Jinxin Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of Science and Technology of China Hefei 230026 China
| | - Yanfang Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
| | - Chang Wei
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of Science and Technology of China Hefei 230026 China
| | - Mao Li
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry (CIAC) Changchun 130022 China
- University of the Chinese Academy of Sciences Beijing 100049 China
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20
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Kurteva VB, Lubenov LA, Shivachev BL, Nikolova RP, Fromm KM. Betti Bases from 4‐(3‐Pyridazo)‐1‐naphthol: Synthesis, Coordination Behaviour and Unusual Substitution Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201802745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vanya B. Kurteva
- Institute of Organic Chemistry with Centre of PhytochemistryBulgarian Academy of Sciences Acad. G. Bonchev street, bl. 9, 1113 Sofia Bulgaria
| | - Lubomir A. Lubenov
- Institute of Organic Chemistry with Centre of PhytochemistryBulgarian Academy of Sciences Acad. G. Bonchev street, bl. 9, 1113 Sofia Bulgaria
| | - Boris L. Shivachev
- Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”Bulgarian Academy of Sciences Acad. G. Bonchev street, bl. 107, 1113 Sofia Bulgaria
| | - Rositsa P. Nikolova
- Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”Bulgarian Academy of Sciences Acad. G. Bonchev street, bl. 107, 1113 Sofia Bulgaria
| | - Katharina M. Fromm
- Department of ChemistryUniversity of Fribourg Chemin du Musée 9, CH-1700 Fribourg Switzerland
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21
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Pallavicini P, Dacarro G, Taglietti A. Self-Assembled Monolayers of Silver Nanoparticles: From Intrinsic to Switchable Inorganic Antibacterial Surfaces. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800709] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Giacomo Dacarro
- Department of Chemistry; University of Pavia; viale Taramelli, 12 - 27100 Pavia Italy
| | - Angelo Taglietti
- Department of Chemistry; University of Pavia; viale Taramelli, 12 - 27100 Pavia Italy
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22
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Taglietti A, Grisoli P, Dacarro G, Gattesco A, Mangano C, Pallavicini P. Grafted monolayers of the neutral Cu( ii) complex of a dioxo-2,3,2 ligand: surfaces with decreased antibacterial action. NEW J CHEM 2018. [DOI: 10.1039/c7nj04601d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A monolayer of the neutral Cu2+ complex of a silane-bearing diamino–diamido ligand is formed on glass, exhibiting (decreased) antibacterial properties.
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Affiliation(s)
- A. Taglietti
- Dipartimento di Chimica
- Università di Pavia
- Pavia
- Italy
| | - P. Grisoli
- Dipartimento di Scienze del Farmaco
- Università di Pavia
- Pavia
- Italy
| | - G. Dacarro
- Dipartimento di Chimica
- Università di Pavia
- Pavia
- Italy
| | - A. Gattesco
- Dipartimento di Chimica
- Università di Pavia
- Pavia
- Italy
| | - C. Mangano
- Dipartimento di Chimica
- Università di Pavia
- Pavia
- Italy
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23
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Stavarache C, Hanganu A, Paun A, Paraschivescu C, Matache M, Vasos PR. Long-lived states detect interactions between small molecules and diamagnetic metal ions. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2017; 284:15-19. [PMID: 28938134 DOI: 10.1016/j.jmr.2017.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/25/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
Long-lived states of nuclear spin order were used for the first time to probe interactions between molecules and diamagnetic metal ions. Proton spin states with lifetimes twice as long as the spin-lattice relaxation time constants of the same nuclei were promoted on the methoxyphenyl and tolyl substituents of a 1,3,4-oxadiazole derivative. The transient interaction of this oxadiazole derivative with silver(I) ions significantly speeds up the relaxation rate constants of proton long-lived states. The interactions between silver and organic compounds lead to the formation of coordination polymers that can be used for the preparation of bio-compatible materials.
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Affiliation(s)
- Cristina Stavarache
- Institute of Organic Chemistry "C.D. Nenitescu" of the Romanian Academy, 202B Spl. Independentei, 060023 Bucharest, Romania; Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Sos. Panduri, No. 90, 050663 Bucharest, Romania
| | - Anamaria Hanganu
- Institute of Organic Chemistry "C.D. Nenitescu" of the Romanian Academy, 202B Spl. Independentei, 060023 Bucharest, Romania; Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Sos. Panduri, No. 90, 050663 Bucharest, Romania
| | - Anca Paun
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Sos. Panduri, No. 90, 050663 Bucharest, Romania
| | - Codruta Paraschivescu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Sos. Panduri, No. 90, 050663 Bucharest, Romania
| | - Mihaela Matache
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Sos. Panduri, No. 90, 050663 Bucharest, Romania
| | - Paul R Vasos
- Research Institute of the University of Bucharest (ICUB), 36-46 B-dul M. Kogalniceanu, 050107 Bucharest, Romania; Extreme Light Infrastructure (ELI-NP)/Horia Hulubei National Institute of Physics & Nuclear Engineering (IFIN-HH), Reactorului St., 30, PO Box MG-6, 077125 Bucharest-Magurele, Romania.
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24
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Piri Z, Moradi-Shoeili Z, Assoud A. New copper(II) complex with bioactive 2–acetylpyridine-4N-p-chlorophenylthiosemicarbazone ligand: Synthesis, X-ray structure, and evaluation of antioxidant and antibacterial activity. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Dacarro G, Grisoli P, Borzenkov M, Milanese C, Fratini E, Ferraro G, Taglietti A, Pallavicini P. Self-assembled monolayers of Prussian blue nanoparticles with photothermal effect. Supramol Chem 2017. [DOI: 10.1080/10610278.2017.1372582] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Pietro Grisoli
- Drug Science Department, University of Pavia, Pavia, Italy
| | - Mykola Borzenkov
- Department of Medicine and Surgery, Center of Nanomedicine, University of Milano Bicocca, Milano, Italy
| | | | - Emiliano Fratini
- Department of Chemistry ‘Ugo Schiff’ and CSGI, University of Firenze, Firenze, Italy
| | - Giovanni Ferraro
- Department of Chemistry ‘Ugo Schiff’ and CSGI, University of Firenze, Firenze, Italy
| | | | - Piersandro Pallavicini
- Department of Chemistry, University of Pavia, Pavia, Italy
- CHT (Centre for Health Technology), University of Pavia, Pavia, Italy
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26
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New silver complexes with bioactive glycine and nicotinamide molecules – Characterization, DNA binding, antimicrobial and anticancer evaluation. J Inorg Biochem 2017; 168:1-12. [DOI: 10.1016/j.jinorgbio.2016.12.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 12/05/2016] [Accepted: 12/09/2016] [Indexed: 11/22/2022]
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27
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D'Agostino A, Taglietti A, Desando R, Bini M, Patrini M, Dacarro G, Cucca L, Pallavicini P, Grisoli P. Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E7. [PMID: 28336841 PMCID: PMC5295197 DOI: 10.3390/nano7010007] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/05/2016] [Accepted: 12/30/2016] [Indexed: 01/17/2023]
Abstract
A layer of silver nanoplates, specifically synthesized with the desired localized surface plasmon resonance (LSPR) features, was grafted on amino-functionalized bulk glass surfaces to impart a double antibacterial action: (i) the well-known, long-term antibacterial effect based on the release of Ag⁺; (ii) an "on demand" action which can be switched on by the use of photo-thermal properties of silver nano-objects. Irradiation of these samples with a laser having a wavelength falling into the so called "therapeutic window" of the near infrared region allows the reinforcement, in the timescale of minutes, of the classical antibacterial effect of silver nanoparticles. We demonstrate how using the two actions allows for almost complete elimination of the population of two bacterial strains of representative Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Agnese D'Agostino
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Angelo Taglietti
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Roberto Desando
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Marcella Bini
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Maddalena Patrini
- Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy.
| | - Giacomo Dacarro
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy.
| | - Lucia Cucca
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | | | - Pietro Grisoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 14, 27100 Pavia, Italy.
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28
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Hao XP, Chen SG, Wang WH, Yang ZQ, Yue LF, Sun HY, Cheng F. AgNP-coordinated glucosamine-grafted carbon nanotubes with enhanced antibacterial properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj01199g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
After glucosamine is coated on MWCNTs, the bonding force between the AgNPs and MWCNT–glucosamine increases because the charge of the O atom changes.
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Affiliation(s)
- X. P. Hao
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - S. G. Chen
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - W. H. Wang
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - Z. Q. Yang
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - L. F. Yue
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - H. Y. Sun
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - F. Cheng
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao
- China
- University of Calgary
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29
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Marchetti F, Palmucci J, Pettinari C, Pettinari R, Marangoni M, Ferraro S, Giovannetti R, Scuri S, Grappasonni I, Cocchioni M, Maldonado Hodar FJ, Gunnella R. Preparation of Polyethylene Composites Containing Silver(I) Acylpyrazolonato Additives and SAR Investigation of their Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29676-29687. [PMID: 27762551 DOI: 10.1021/acsami.6b09742] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Novel composite materials PEn (n = 1-9) have been prepared by an easily up-scalable embedding procedure of three different families of Ag(I) acylpyrazolonato complexes in polyethylene (PE) matrix. In details, PE1-PE3 composites contain polynuclear [Ag(QR)]n complexes, PE4-PE6 contain mononuclear [Ag(QR)(L)m] complexes and PE7-PE9 are loaded with mononuclear [Ag(QR) (PPh3)2] complexes, respectively (where L = 1-methylimidazole or 2-ethylimidazole, m = 1 or 2, and HQR = 1-phenyl-3-methyl-4-RC(═O)-5-pyrazolone, where in detail HQfb, R = -CF2CF2CF3; HQcy, R = -cyclo-C6H11; HQbe, R = -C(H)═C(CH3)2). The PEn composites, prepared by using a 1:1000 w/w silver additive/polyethylene ratio, have been characterized in bulk by IR spectroscopy and TGA analyses, which confirmed that the properties of polyethylene matrix are essentially unchanged. AFM, SEM, and EDX surface techniques show that silver additives form agglomerates with dimensions 10-100 μm on the polyethylene surface, with a slight increment of surface roughness of pristine plastic within 50 nm. However, the elastic properties of the composites are essentially the same of PE. The antibacterial activity of all composites has been tested against three bacterial strains (E. coli, P. aeruginosa and S. aureus) and results show that two classes of composites, PE1-PE3 and PE4-PE6, display high and persistent bactericidal and bacteriostatic activity, comparable to PE embedded with AgNO3. By contrast, composites PE7-PE9 exhibit a reduced antibacterial action. Contact and release tests in several conditions for specific migration of Ag+ from plastics, indicate a very limited but time persistent release of silver ions from PE1-PE6 composites, thus suggesting that they are potential antibacterial materials for future applications. Instead, PE7-PE9 almost do not release silver, only trace levels of silver ions being detected, in accordance with their reduced antibacterial action. None of the composites is toxic against higher organisms, as confirmed by D. magna test of ecotoxicity.
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Affiliation(s)
- Fabio Marchetti
- School of Science and Technology, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
- ICCOM, CNR 62032 Camerino, Italy
| | - Jessica Palmucci
- School of Science and Technology, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Claudio Pettinari
- ICCOM, CNR 62032 Camerino, Italy
- School of Pharmacy, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Riccardo Pettinari
- ICCOM, CNR 62032 Camerino, Italy
- School of Pharmacy, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Mirko Marangoni
- School of Science and Technology, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Stefano Ferraro
- School of Science and Technology, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Rita Giovannetti
- School of Science and Technology, Chemistry Section, University of Camerino , Via S. Agostino 1, 62032 Camerino (MC) Italy
| | - Stefania Scuri
- Research Centre for Hygienistic, Health and Environmental Sciences, School of Pharmacy, University of Camerino , Via Madonna delle Carceri 9, 62032 Camerino (MC) Italy
| | - Iolanda Grappasonni
- Research Centre for Hygienistic, Health and Environmental Sciences, School of Pharmacy, University of Camerino , Via Madonna delle Carceri 9, 62032 Camerino (MC) Italy
| | - Mario Cocchioni
- Research Centre for Hygienistic, Health and Environmental Sciences, School of Pharmacy, University of Camerino , Via Madonna delle Carceri 9, 62032 Camerino (MC) Italy
| | | | - Roberto Gunnella
- School of Science and Technology, Physics Section, University of Camerino , Via Madonna delle Carceri 9, 62032 Camerino (MC) Italy
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30
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Gagnon J, Clift MJD, Vanhecke D, Widnersson IE, Abram SL, Petri-Fink A, Caruso RA, Rothen-Rutishauser B, Fromm KM. Synthesis, characterization, antibacterial activity and cytotoxicity of hollow TiO2-coated CeO2nanocontainers encapsulating silver nanoparticles for controlled silver release. J Mater Chem B 2016; 4:1166-1174. [DOI: 10.1039/c5tb01917f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This novel type of nanocontainers offers the concept of potentially controlling silver delivery for the prevention of implant-associated infections.
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Affiliation(s)
- J. Gagnon
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
- PFPC
| | - M. J. D. Clift
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - D. Vanhecke
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - I. E. Widnersson
- PFPC
- School of Chemistry
- The University of Melbourne
- Melbourne, Victoria 3010
- Australia
| | - S.-L. Abram
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - A. Petri-Fink
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - R. A. Caruso
- PFPC
- School of Chemistry
- The University of Melbourne
- Melbourne, Victoria 3010
- Australia
| | | | - K. M. Fromm
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
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31
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Pallavicini P, Amendola V, Bergamaschi G, Cabrini E, Dacarro G, Rossi N, Taglietti A. A bistren cryptand with a remote thioether function: Cu(ii) complexation in solution and on the surface of gold nanostars. NEW J CHEM 2016. [DOI: 10.1039/c5nj03175c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A di-copper(ii) complex is formed in a bis-tren cage featuring a thioether function, capable of grafting on a monolayer of gold nanostars.
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Affiliation(s)
| | - Valeria Amendola
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Greta Bergamaschi
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Elisa Cabrini
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Giacomo Dacarro
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
- Dipartimento di Fisica
| | - Nadia Rossi
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Angelo Taglietti
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
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32
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D'Agostino A, Taglietti A, Grisoli P, Dacarro G, Cucca L, Patrini M, Pallavicini P. Seed mediated growth of silver nanoplates on glass: exploiting the bimodal antibacterial effect by near IR photo-thermal action and Ag+ release. RSC Adv 2016. [DOI: 10.1039/c6ra11608f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Silver nanoplates synthesized with the desired features directly on glass show a bimodal antibacterial action: Ag+ release and NIR laser switchable hyperthermia.
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Affiliation(s)
- A. D'Agostino
- Department of Chemistry
- University of Pavia
- 27100 Pavia
- Italy
| | - A. Taglietti
- Department of Chemistry
- University of Pavia
- 27100 Pavia
- Italy
| | - P. Grisoli
- Department of Drug Sciences
- University of Pavia
- 27100 Pavia
- Italy
| | - G. Dacarro
- Department of Physics
- University of Pavia
- 27100 Pavia
- Italy
| | - L. Cucca
- Department of Chemistry
- University of Pavia
- 27100 Pavia
- Italy
| | - M. Patrini
- Department of Physics
- University of Pavia
- 27100 Pavia
- Italy
| | - P. Pallavicini
- Department of Chemistry
- University of Pavia
- 27100 Pavia
- Italy
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33
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Pallavicini P, Cabrini E, Casu A, Dacarro G, Diaz-Fernandez YA, Falqui A, Milanese C, Vita F. Silane-coated magnetic nanoparticles with surface thiol functions for conjugation with gold nanostars. Dalton Trans 2015; 44:21088-98. [PMID: 26594047 DOI: 10.1039/c5dt02812d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small (d∼ 8 nm) magnetite nanoparticles, Fe3O4NP, are prepared and coated with mercaptopropyl trimethoxysilane (MPTS) to form Fe3O4NP@MPTS. In the coating step controlled MPTS/Fe3O4NP molar ratios are used, ranging from 1 to 7.8 × 10(4). The total quantity of MPTS per Fe3O4NP is determined by SEM-EDS analysis and the average number of free, reactive -SH groups per Fe3O4NP is calculated by a colorimetric method. At very low molar ratios MPTS forms a submonolayer on the Fe3O4NP surface with all -SH free to react, while on increasing the MPTS/Fe3O4NP molar ratio the (CH3O)3Si- groups of MPTS polymerize, forming a progressively thicker shell, in which only a small fraction of the -SH groups, positioned on the shell surface, is available for further reaction. The MPTS shell reduces the magnetic interactions occurring between the magnetite cores, lowering the occurrence and strength of collective magnetic states, with Fe3O4NP@MPTS showing the typical behaviour expected for a sample with a mono-modal size distribution of superparamagnetic nanoparticles. Interaction of Fe3O4NP@MPTS with gold nanostars (GNS) was tested, using both Fe3O4NP@MPTS with a MPTS submonolayer and with increasing shell thickness. Provided that a good balance is used between the number of available -SH and the overall size of Fe3O4NP@MPTS, the free thiols of such nanoparticles bind GNS decorating their surface, as shown by UV-Vis spectroscopy and TEM imaging.
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Diaz Fernandez YA, Gschneidtner TA, Wadell C, Fornander LH, Lara Avila S, Langhammer C, Westerlund F, Moth-Poulsen K. The conquest of middle-earth: combining top-down and bottom-up nanofabrication for constructing nanoparticle based devices. NANOSCALE 2014; 6:14605-16. [PMID: 25208687 DOI: 10.1039/c4nr03717k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The development of top-down nanofabrication techniques has opened many possibilities for the design and realization of complex devices based on single molecule phenomena such as e.g. single molecule electronic devices. These impressive achievements have been complemented by the fundamental understanding of self-assembly phenomena, leading to bottom-up strategies to obtain hybrid nanomaterials that can be used as building blocks for more complex structures. In this feature article we highlight some relevant published work as well as present new experimental results, illustrating the versatility of self-assembly methods combined with top-down fabrication techniques for solving relevant challenges in modern nanotechnology. We present recent developments on the use of hierarchical self-assembly methods to bridge the gap between sub-nanometer and micrometer length scales. By the use of non-covalent self-assembly methods, we show that we are able to control the positioning of nanoparticles on surfaces, and to address the deterministic assembly of nano-devices with potential applications in plasmonic sensing and single-molecule electronics experiments.
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Affiliation(s)
- Yuri A Diaz Fernandez
- Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.
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