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Li S, Wang Z, Chen Y, Zou Q, Zou Q, Wang L, Zhu Y, Wang L. Preparation of chitosan/retinoic acid @ nanocapsules/TiO 2 self-cleaning one-dimensional photonic crystals and the study of the visual detection of acute promyelocytic leukemia. RSC Adv 2023; 13:18363-18370. [PMID: 37342810 PMCID: PMC10277903 DOI: 10.1039/d3ra02224b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/27/2023] [Indexed: 06/23/2023] Open
Abstract
Sample exposure to air during optical detection leads to the widespread dispersal of microorganisms in the air, posing a health threat to patients and healthcare workers and potentially causing numerous nosocomial infections. In this study, a TiO2/CS-nanocapsules-Va visualization sensor was developed by alternatively spin-coating TiO2, CS and nanocapsules-Va. The uniformly distributed TiO2 can endow the visualization sensor with good photocatalytic performance, and the nanocapsules-Va can bind specifically to the antigen and change its volume. The research results showed that the visualization sensor cannot only detect acute promyelocytic leukemia conveniently, quickly and accurately, but also kill bacteria, decompose organic residues in blood samples under the influence of sunlight, and have an extensive application prospect in substance detection and disease diagnosis.
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Affiliation(s)
- Shuai Li
- Qingdao University Qingdao Shandong Province China
- Central Laboratory, Linyi People's Hospital Linyi Shandong Province China
| | - Zhiqiang Wang
- Central Laboratory, Linyi People's Hospital Linyi Shandong Province China
| | - Yanying Chen
- Laboratory of Hematology, Linyi People's Hospital Linyi Shandong Province China
| | - Qing Zou
- Department of Hematology, Linyi People's Hospital Linyi Shandong Province China
| | - Qianqian Zou
- Laboratory Department, Traditional, Chinese Medicine Hospital of Linyi Linyi Shandong Province China
| | - Long Wang
- Central Laboratory, Linyi People's Hospital Linyi Shandong Province China
| | - Yanxi Zhu
- Central Laboratory, Linyi People's Hospital Linyi Shandong Province China
| | - Lijuan Wang
- Central Laboratory, Linyi People's Hospital Linyi Shandong Province China
- Department of Hematology, Linyi People's Hospital Linyi Shandong Province China
- Key Laboratory of Neurophysiology, Health Commission of Shandong Province Linyi Shandong Province China
- Key Laboratory for Translational Oncolgoy, Xuzhou Medical University Linyi Shandong Province China
- Linyi Key Laboratory of Tumor Biology Linyi Shandong Province China
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2
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Moore JV, Wylie MP, Andrews GP, McCoy CP. Photosensitiser-incorporated microparticles for photodynamic inactivation of bacteria. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 241:112671. [PMID: 36870247 DOI: 10.1016/j.jphotobiol.2023.112671] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/27/2023] [Accepted: 02/17/2023] [Indexed: 03/06/2023]
Abstract
Antimicrobial resistance is an ever-growing global concern, making the development of alternative antimicrobial agents and techniques an urgent priority to protect public health. Antimicrobial photodynamic therapy (aPDT) is one such promising alternative, which harnesses the cytotoxic action of reactive oxygen species (ROS) generated upon irradiation of photosensitisers (PSs) with visible light to destroy microorganisms. In this study we report a convenient and facile method to produce highly photoactive antimicrobial microparticles, exhibiting minimal PS leaching, and examine the effect of particle size on antimicrobial activity. A ball milling technique produced a range of sizes of anionic p(HEMA-co-MAA) microparticles, providing large surface areas available for electrostatic attachment of the cationic PS, Toluidine Blue O (TBO). The TBO-incorporated microparticles showed a size-dependent effect on antimicrobial activity, with a decrease in microparticle size resulting in an increase in the bacterial reductions achieved when irradiated with red light. The >6 log10Pseudomonas aeruginosa and Staphylococcus aureus reductions (>99.9999%) achieved within 30 and 60 min, respectively, by TBO-incorporated >90 μm microparticles were attributed to the cytotoxic action of the ROS generated by TBO molecules bound to the microparticles, with no PS leaching from these particles detected over this timeframe. TBO-incorporated microparticles capable of significantly reducing the bioburden of solutions with short durations of low intensity red light irradiation and minimal leaching present an attractive platform for various antimicrobial applications.
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Affiliation(s)
- Jessica V Moore
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Matthew P Wylie
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Gavin P Andrews
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Colin P McCoy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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3
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Gayle AJ, Lenef JD, Huff PA, Wang J, Fu F, Dadheech G, Dasgupta NP. Visible-Light-Driven Photocatalysts for Self-Cleaning Transparent Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11641-11649. [PMID: 36095297 DOI: 10.1021/acs.langmuir.2c01455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Highly transparent photocatalytic self-cleaning surfaces capable of harvesting near-visible (365-430 nm) photons were synthesized and characterized. This helps to address a current research gap in self-cleaning surfaces, in which photocatalytic coatings that exhibit activity at wavelengths longer than ultraviolet (UV) generally have poor optical transparency, because of broadband scattering and the attenuation of visible light. In this work, the wavelength-dependent photocatalytic activity of Pt-modified TiO2 (Pt-TiO2) particles was characterized, which exhibited activity for wavelengths up to 430 nm. Pt-TiO2 nanoparticles were embedded in a mesoporous SiO2 sol-gel matrix, forming a superhydrophilic surface that allowed for water adsorption and formation of reactive oxide species upon illumination, resulting in the removal of organic surface contaminants. These self-cleaning surfaces only interact strongly with near-visible light (∼365-430 nm), as characterized by photocatalytic self-cleaning tests. Broadband visible transparency was preserved by generating a morphology composed of small clusters of Pt-TiO2 surrounded by a matrix of SiO2, which limited diffuse visible light scattering and attenuation. The wavelength-dependent self-cleaning rate by the films was quantified using stearic acid degradation under both monochromatic and AM1.5G spectral illumination. By varying the film morphology, the average transmittance relative to bare glass can be tuned from ∼93%-99%, and the self-cleaning rate can be adjusted by more than an order of magnitude. Overall, the ability to utilize photocatalysts with tunable visible light activity, while maintaining broadband transparency, can enable the use of photocatalytic self-cleaning surfaces for applications where UV illumination is limited, such as touchscreen displays.
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Affiliation(s)
- Andrew J Gayle
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Julia D Lenef
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Park A Huff
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jing Wang
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Fenghe Fu
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Gayatri Dadheech
- General Motors Technical Center, Warren, Michigan 48093, United States
| | - Neil P Dasgupta
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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4
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Electrochemically Deposited Zinc (Tetraamino)phthalocyanine as a Light-activated Antimicrobial Coating Effective against S. aureus. MATERIALS 2022; 15:ma15030975. [PMID: 35160921 PMCID: PMC8838431 DOI: 10.3390/ma15030975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 01/07/2023]
Abstract
Light-activated antimicrobial coatings are currently considered to be a promising approach for the prevention of nosocomial infections. In this work, we present a straightforward strategy for the deposition of a photoactive biocidal organic layer of zinc (tetraamino)phthalocyanine (ZnPcNH2) in an electrochemical oxidative process. The chemical structure and morphology of the resulting layer are widely characterized by microscopic and spectroscopic techniques, while its ability to photogenerate reactive oxygen species (ROS) is investigated in situ by UV–Vis spectroscopy with α-terpinene or 1,3-diphenylisobenzofuran as a chemical trap. It is shown that the ZnPcNH2 photosensitizer retained its photoactivity after immobilization, and that the reported light-activated coating exhibits promising antimicrobial properties towards Staphyloccocus aureus (S. aureus).
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Ye J, Li B, Li M, Zheng Y, Wu S, Han Y. Formation of a ZnO nanorods-patterned coating with strong bactericidal capability and quantitative evaluation of the contribution of nanorods-derived puncture and ROS-derived killing. Bioact Mater 2021; 11:181-191. [PMID: 34938922 PMCID: PMC8665260 DOI: 10.1016/j.bioactmat.2021.09.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/21/2021] [Accepted: 09/07/2021] [Indexed: 11/29/2022] Open
Abstract
To endow Ti-based orthopedic implants with strong bactericidal activity, a ZnO nanorods-patterned coating (namely ZNR) was fabricated on Ti utilizing a catalyst- and template-free method of micro-arc oxidation (MAO) and hydrothermal treatment (HT). The coating comprises an outer layer of ZnO nanorods and a partially crystallized inner layer with nanocrystalline TiO2 and Zn2TiO4 embedded amorphous matrix containing Ti, O and Zn. During HT, Zn2+ ions contained in amorphous matrix of the as-MAOed layer migrate to surface and react with OH− in hydrothermal solution to form ZnO nuclei growing in length at expense of the migrated Zn2+. ZNR exhibits intense bactericidal activity against the adhered and planktonic S. aureus in vitro and in vivo. The crucial contributors to kill the adhered bacteria are ZnO nanorods derived mechano-penetration and released reactive oxygen species (ROS). Within 30 min of S. aureus incubation, ROS is the predominant bactericidal contributor with quantitative contribution value of ∼20%, which transforms into mechano-penetration with prolonging time to reach quantitative contribution value of ∼96% at 24 h. In addition, the bactericidal contributor against the planktonic bacteria of ZNR is relied on the released Zn2+. This work discloses an in-depth bactericidal mechanism of ZnO nanorods. A templates and catalysts-free method is used to fabricate ZnO nanorods on Ti ZnO nanorods-arrayed coating shows intense broad-spectrum bactericidal activity Main bactericidal contributor of ZnO nanorods to adhered bacteria is mechano-puncture Main bactericidal contributor of ZnO nanorods to planktonic bacteria is released Zn2+
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Affiliation(s)
- Jing Ye
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Bo Li
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Mei Li
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.,Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Yufeng Zheng
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Shuilin Wu
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology By the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
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Harada N, Masuda K, Nakamura JI, Uyama H. Fabrication and evaluation of durable, optically clear, and self-disinfecting films. Polym J 2021. [DOI: 10.1038/s41428-021-00532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Nyga A, Czerwińska-Główka D, Krzywiecki M, Przystaś W, Zabłocka-Godlewska E, Student S, Kwoka M, Data P, Blacha-Grzechnik A. Covalent Immobilization of Organic Photosensitizers on the Glass Surface: Toward the Formation of the Light-Activated Antimicrobial Nanocoating. MATERIALS 2021; 14:ma14113093. [PMID: 34200077 PMCID: PMC8201308 DOI: 10.3390/ma14113093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 11/17/2022]
Abstract
Two highly efficient commercial organic photosensitizers—azure A (AA) and 5-(4-aminophenyl)-10,15,20-(triphenyl)porphyrin (APTPP)—were covalently attached to the glass surface to form a photoactive monolayer. The proposed straightforward strategy consists of three steps, i.e., the initial chemical grafting of 3-aminopropyltriethoxysilane (APTES) followed by two chemical postmodification steps. The chemical structure of the resulting mixed monolayer (MIX_TC_APTES@glass) was widely characterized by X-ray photoelectron (XPS) and Raman spectroscopies, while its photoactive properties were investigated in situ by UV–Vis spectroscopy with α-terpinene as a chemical trap. It was shown that both photosensitizers retain their activity toward light-activated generation of reactive oxygen species (ROS) after immobilization on the glassy surface and that the resulting nanolayer shows high stability. Thanks to the complementarity of the spectral properties of AA and APTPP, the effectiveness of the ROS photogeneration under broadband illumination can be optimized. The reported light-activated nanocoating demonstrated promising antimicrobial activity toward Escherichia coli (E. coli), by reducing the number of adhered bacteria compared to the unmodified glass surface.
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Affiliation(s)
- Aleksandra Nyga
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland; (A.N.); (D.C.-G.); (P.D.)
| | - Dominika Czerwińska-Główka
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland; (A.N.); (D.C.-G.); (P.D.)
| | - Maciej Krzywiecki
- Center for Science and Education (CSE), Institute of Physics, Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland;
| | - Wioletta Przystaś
- Faculty of Energy and Environmental Engineering, Silesian University of Technology, 44-100 Gliwice, Poland; (W.P.); (E.Z.-G.)
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Ewa Zabłocka-Godlewska
- Faculty of Energy and Environmental Engineering, Silesian University of Technology, 44-100 Gliwice, Poland; (W.P.); (E.Z.-G.)
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Sebastian Student
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Monika Kwoka
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland;
- Institute of Electronics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Przemysław Data
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland; (A.N.); (D.C.-G.); (P.D.)
| | - Agata Blacha-Grzechnik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland; (A.N.); (D.C.-G.); (P.D.)
- Correspondence: ; Tel.: +48-322371024
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8
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New Approach in the Application of Conjugated Polymers: The Light-Activated Source of Versatile Singlet Oxygen Molecule. MATERIALS 2021; 14:ma14051098. [PMID: 33652904 PMCID: PMC7956640 DOI: 10.3390/ma14051098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 01/17/2023]
Abstract
For many years, the research on conjugated polymers (CPs) has been mainly focused on their application in organic electronics. Recent works, however, show that due to the unique optical and photophysical properties of CPs, such as high absorption in UV–Vis or even near-infrared (NIR) region and efficient intra-/intermolecular energy transfer, which can be relatively easily optimized, CPs can be considered as an effective light-activated source of versatile and highly reactive singlet oxygen for medical or catalytic use. The aim of this short review is to present the novel possibilities that lie dormant in those exceptional polymers with the extended system of π-conjugated bonds.
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Vorotnikova NA, Bardin VA, Vorotnikov YA, Kirakci K, Adamenko LS, Alekseev AY, Meyer HJ, Kubát P, Mironov YV, Lang K, Shestopalov MA. Heterogeneous photoactive antimicrobial coatings based on a fluoroplastic doped with an octahedral molybdenum cluster compound. Dalton Trans 2021; 50:8467-8475. [PMID: 34047321 DOI: 10.1039/d1dt01102b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Despite the wide variety of strategies developed to combat pathogenic microorganisms, the infectious diseases they cause remain a worldwide health issue. Hence, the search for new disinfectants, which prevent infection spread, constitutes an extremely urgent task. One of the most promising methods is the use of photoactive compounds - photosensitizers, capable of generating reactive oxygen species, in particular, singlet oxygen (O2(1Δg)), which causes rapid and effective death of microorganisms of all types. In this work, we propose the utilization of the powdered cluster complex (Bu4N)2[{Mo6I8}(OTs)6] as a photoactive additive to commercially available fluoroplastic lacquer F-32L to create heterogeneous self-sterilizing coatings. We show that soaking of the prepared films in water for 60 days did not lead to a decrease in their photosensitization properties indicating their excellent stability. Moreover, the use of the cluster complex in the solid state allowed significant expansion of the operating wavelength range, which covers the UV region and a large part of the visible region (250-650 nm). The films displayed high photoantimicrobial activity against five common pathogens (bacteria and fungi) under white-light irradiation. Overall, the properties demonstrated make these materials promising for practical use in everyday outdoor and indoor disinfection since they are active under both sunlight and artificial lighting.
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Affiliation(s)
- Natalya A Vorotnikova
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentieva, 630090 Novosibirsk, Russia.
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10
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Reynoso E, Durantini AM, Solis CA, Macor LP, Otero LA, Gervaldo MA, Durantini EN, Heredia DA. Photoactive antimicrobial coating based on a PEDOT-fullerene C60 polymeric dyad. RSC Adv 2021; 11:23519-23532. [PMID: 35479802 PMCID: PMC9036534 DOI: 10.1039/d1ra03417k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/17/2021] [Indexed: 01/14/2023] Open
Abstract
A photostable and photodynamic antimicrobial surface was successfully obtained and applied to photoinactivate microorganisms. This approach was based on the synthesis of a fullerene C60 derivative (EDOT-C60) where fullerene C60 is covalently linked to 3,4-ethylenedioxythiophene (EDOT) through a 1,3-dipolar cycloaddition reaction. This dual-functional monomer bears an EDOT center connected via an alkyl chain to a fullerene C60 moiety. In this structure, EDOT acts as an electropolymerizable unit that allows the film formation over conducting substrates, while fullerene C60 performs the photodynamic antimicrobial activity. Electrochemical polymerization of EDOT was used to obtain stable and photodynamic polymeric films (PEDOT-C60) in a controllable procedure. Cyclic voltammetry and UV-visible spectroscopy studies showed that the fullerene C60 units were not altered during the electropolymerization process, obtaining surfaces with high fullerene content. Photobleaching measurements demonstrated that the electropolymerized films were highly photostable. Moreover, photodynamic properties of PEDOT-C60 were compared with fullerene C60 and showed that electrodeposited films were able to generate reactive oxygen species (ROS) through the two photomechanisms, producing singlet molecular oxygen (type II) and superoxide radical anion (type I). All studies demonstrated that fullerene C60 moieties covalently attached to the polymeric matrix mainly conserve the photodynamic characteristics. Hence, photodynamic action sensitized by PEDOT-C60 was assessed in vitro against Staphylococcus aureus. The photosensitized inactivation by the electropolymerized films on bacteria suspensions produced >99.9% reduction in S. aureus survival. Fluorescence microscopy experiments with S. aureus adhered to the PEDOT-C60 surface showed a complete microbe annihilation. Also, the eradication of biofilms formed on PEDOT-C60 surfaces resulted in a photokilling >99.9% after visible light irradiation. Our results demonstrated that these antimicrobial photodynamic polymeric films are a promising and versatile platform to photoinactivate microorganisms and to obtain photostable self-sterilizing surfaces. A photostable and photodynamic antimicrobial surface was developed. The antimicrobial activity of the material reached outstanding levels of inactivation under different conditions: planktonic suspensions, adhered cells to the surface, and biofilms.![]()
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Affiliation(s)
- Eugenia Reynoso
- IDAS-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Andrés M. Durantini
- IDAS-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Claudia A. Solis
- IITEMA-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Lorena P. Macor
- IITEMA-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Luis A. Otero
- IITEMA-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Miguel A. Gervaldo
- IITEMA-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Edgardo N. Durantini
- IDAS-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
| | - Daniel A. Heredia
- IDAS-CONICET
- Departamento de Química
- Facultad de Ciencias Exactas Físico-Químicas y Naturales
- Universidad Nacional de Río Cuarto
- X5804BYA Río Cuarto
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11
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Understanding the role of dye in colorful thermoplastic film under visible light. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02226-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Del Valle CA, Pérez-Laguna V, Resta IM, Gavara R, Felip-León C, Miravet JF, Rezusta A, Galindo F. A cost-effective combination of Rose Bengal and off-the-shelf cationic polystyrene for the photodynamic inactivation of Pseudomonas aeruginosa. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111302. [PMID: 32919663 DOI: 10.1016/j.msec.2020.111302] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 01/01/2023]
Abstract
Two new photoactive materials have been prepared, characterized and tested against Pseudomonas aeruginosa bacteria (planktonic suspension). The synthesis of the polymeric photosensitizers can be made at a multigram scale, in few minutes, starting from inexpensive and readily available materials, such as Rose Bengal (photosensitizer) and ion exchange resins Amberlite® IRA 900 (macroporous) or IRA 400 (gel-type) as cationic polystyrene supports. The most notable feature of these systems is their notable bactericidal activity in the dark (4-5 log10 CFU/mL reduction of the population of P. aeruginosa) which becomes enhanced upon irradiation with visible light (to reach a total reduction of 8 log10 CFU/mL for the macroporous polymer at a fluence of 120 J/cm2 using green light of 515 nm).
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Affiliation(s)
- Carla Arnau Del Valle
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Vanesa Pérez-Laguna
- Departamento de Microbiología, Hospital Universitario Miguel Servet, IIS Aragón, Zaragoza, Spain
| | - Ignacio Muñoz Resta
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Raquel Gavara
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Carles Felip-León
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Juan F Miravet
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Antonio Rezusta
- Departamento de Microbiología, Hospital Universitario Miguel Servet, IIS Aragón, Zaragoza, Spain.
| | - Francisco Galindo
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071 Castellón, Spain.
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13
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Ye J, Li B, Li M, Zheng Y, Wu S, Han Y. ROS induced bactericidal activity of amorphous Zn-doped titanium oxide coatings and enhanced osseointegration in bacteria-infected rat tibias. Acta Biomater 2020; 107:313-324. [PMID: 32126308 DOI: 10.1016/j.actbio.2020.02.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 02/11/2020] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
Titanium-based endosseous implants with high antibacterial and osseointegration activities are extremely required in clinics. To achieve this line, herein the doped coatings with three kinds of Zn doses were micro-arc oxidized (MAOed) on Ti. They were examined to reveal a bilayered structure, in which the outer layer consisted completely of the amorphism comprising elements of Ti, O and Zn with Zn doped in the form of weaken Zn-O bonds, and the underlying layer was partially crystallized with nanocrystalline TiO2 and Zn2TiO4 to embed an amorphous matrix. While the Zn doped doses of the surface amorphous layers increased with elevating the MAOed voltages, the weaken Zn-O bonds in the amorphism were identified to act as both the contributor of Zn2+ controllable release and the generator of reactive oxide species (ROS) on the coatings. The enhanced HO• and O2-• formation on the elevated voltage MAOed coatings caused serious break of the cell walls and plasma membranes of S. aureus. In parallel, the enhanced Zn2+ release and extracellular H2O2 formation led to the enhanced intracellular ROS level of S. aureus, further aggravating the damage of plasma membrane, resulting in bacteria death. On contrary to the overdose of Zn doped coating, the moderate doses of Zn doped coatings did not induce additional intracellular ROS and attenuate viability and proliferation of osteoblasts in vitro, and promoted osseointegration in both S. aureus-uninfected and infected rat tibias, which ascribed to the strong antibacterial activity and un-attenuated cell function of the coatings in the infected case. STATEMENT OF SIGNIFICANCE: (1) The Zn-doped coatings revealed a bilayered structure of the surface layer comprising the Ti, O and Zn constructed amorphism with Zn in the form of weaken Zn-O bonds, and the underlying layer comprising nanocrystalline TiO2 and Zn2TiO4 to embed amorphous matrix. (2) The weaken Zn-O bonds in the amorphism were identified to act as both the contributor of Zn2+ controllable release and the generator of ROS on the coatings. (3) The enhanced Zn2+ release and ROS formation on the coatings killed S. aureus by inducing serious break of their cell walls and plasma membranes. This effect in combination of un-attenuated osteoblast proliferation endowed the moderate Zn doped coatings with enhanced osseointegration in S. aureus-infected rat tibias.
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14
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Heredia DA, Martínez SR, Durantini AM, Pérez ME, Mangione MI, Durantini JE, Gervaldo MA, Otero LA, Durantini EN. Antimicrobial Photodynamic Polymeric Films Bearing Biscarbazol Triphenylamine End-Capped Dendrimeric Zn(II) Porphyrin. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27574-27587. [PMID: 31310503 DOI: 10.1021/acsami.9b09119] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel biscarbazol triphenylamine end-capped dendrimeric zinc(II) porphyrin (DP 5) was synthesized by click chemistry. This compound is a cruciform dendrimer that bears a nucleus of zinc(II) tetrapyrrolic macrocycle substituted at the meso positions by four identical substituents. These are formed by a tetrafluorophenyl group that possesses a triazole unit in the para position. This nitrogenous heterocyclic is connected to a 4,4'-di(N-carbazolyl)triphenylamine group by means of a phenylenevinylene bridge, which allows the conjugation between the nucleus and this external electropolymerizable carbazoyl group. In this structure, dendrimeric arms act as light-harvesting antennas, increasing the absorption of blue light, and as electroactive moieties. The electrochemical oxidation of the carbazole groups contained in the terminal arms of the DP 5 was used to obtain novel, stable, and reproducible fully π-conjugated photoactive polymeric films (FDP 5). First, the spectroscopic characteristics and photodynamic properties of DP 5 were compared with its constitutional components derived of porphyrin P 6 and carbazole D 7 moieties in solution. The fluorescence emissions of the dendrimeric units in DP 5 were more strongly quenched by the tetrapyrrolic macrocycle, indicating photoinduced energy transfer. In addition, FDP 5 film showed the Soret and Q absorption bands and red fluorescence emission of the corresponding zinc(II) porphyrin. Also, FDP 5 film was highly stable to photobleaching, and it was able to produce singlet molecular oxygen in both N,N-dimethylformamide (DMF) and water. Therefore, the porphyrin units embedded in the polymeric matrix of FDP 5 film mainly retain the photochemical properties. Photodynamic inactivation mediated by FDP 5 film was investigated in Staphylococcus aureus and Escherichia coli. When a cell suspension was deposited on the surface, complete eradication of S. aureus and a 99% reduction in E. coli survival were found after 15 and 30 min of irradiation, respectively. Also, FDP 5 film was highly effective to eliminate individual bacteria attached to the surface. In addition, photodynamic inactivation (PDI) sensitized by FDP 5 film produced >99.99% bacterial killing in biofilms formed on the surface after 60 min irradiation. The results indicate that FDP 5 film represents an interesting and versatile photodynamic active material to eradicate bacteria as planktonic cells, individual attached microbes, or biofilms.
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Affiliation(s)
- Daniel A Heredia
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Sol R Martínez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Andrés M Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - M Eugenia Pérez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - María I Mangione
- IQUIR-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario , Suipacha 531 , S2002LRK Rosario , Argentina
| | - Javier E Durantini
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Miguel A Gervaldo
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Luis A Otero
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Edgardo N Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
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15
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Stoll KR, Scholle F, Zhu J, Zhang X, Ghiladi RA. BODIPY-embedded electrospun materials in antimicrobial photodynamic inactivation. Photochem Photobiol Sci 2019; 18:1923-1932. [PMID: 31147667 DOI: 10.1039/c9pp00103d] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Drug-resistant pathogens, particularly those that result in hospital acquired infections (HAIs), have emerged as a critical priority for the World Health Organization. To address the need for self-disinfecting materials to counter the threat posed by the transmission of these pathogens from surfaces to new hosts, here we investigated if a cationic BODIPY photosensitizer, embedded via electrospinning into nylon and polyacrylonitrile (PAN) nanofibers, was capable of inactivating both bacteria and viruses via antimicrobial photodynamic inactivation (aPDI). Materials characterization, including fiber morphology and the degree of photosensitizer loading, was assessed by scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), and UV-visible diffuse reflectance spectroscopy (UV-Vis DRS), and demonstrated that the materials were comprised of nanofibers (125-215 nm avg. diameter) that were thermostable to >300 °C. The antimicrobial potencies of the resultant Nylon-BODIPY(+) and PAN-BODIPY(+) nanofiber materials were evaluated against four strains of bacteria recognized by the World Health Organization as either critical or high priority pathogens: Gram-positive strains methicillin-resistant S. aureus (MRSA; ATCC BAA-44) and vancomycin-resistant E. faecium (VRE; ATCC BAA-2320), and Gram-negative strains multidrug-resistant A. baumannii (MDRAB; ATCC BAA-1605) and NDM-1 positive K. pneumoniae (KP; ATCC BAA-2146). Our results demonstrated the detection limit (99.9999%; 6 log units reduction in CFU mL-1) photodynamic inactivation of three strains upon illumination (30-60 min; 40-65 ± 5 mW cm-2; 400-700 nm): MRSA, VRE, and MDRAB, but only minimal inactivation (47-75%) of KP. Antiviral studies employing PAN-BODIPY(+) against vesicular stomatitis virus (VSV), a model enveloped virus, revealed complete inactivation. Taken together, the results demonstrate the potential for electrospun BODIPY(+)-embedded nanofiber materials as the basis for pathogen-specific anti-infective materials, even at low photosensitizer loadings.
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Affiliation(s)
- Kevin R Stoll
- Department of Chemistry, United States Air Force Academy, CO 80840, USA
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16
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Palanivel C, Prabhakaran N, Selvakumar G. Morphological expedient flower like nanostructures WO3–TiO2 nanocomposite material and its multi applications. OPENNANO 2019. [DOI: 10.1016/j.onano.2018.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Grammatikova NE, George L, Ahmed Z, Candeias NR, Durandin NA, Efimov A. Zinc phthalocyanine activated by conventional indoor light makes a highly efficient antimicrobial material from regular cellulose. J Mater Chem B 2019. [DOI: 10.1039/c9tb01095e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A phthalocyanine-cellulose material quickly inactivates drug-resistant microbes under indoor light.
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Affiliation(s)
| | - Lijo George
- Faculty of Engineering and Natural Sciences
- Tampere University
- Tampere
- Finland
| | - Zafar Ahmed
- Faculty of Engineering and Natural Sciences
- Tampere University
- Tampere
- Finland
| | - Nuno R. Candeias
- Faculty of Engineering and Natural Sciences
- Tampere University
- Tampere
- Finland
| | - Nikita A. Durandin
- Faculty of Engineering and Natural Sciences
- Tampere University
- Tampere
- Finland
| | - Alexander Efimov
- Faculty of Engineering and Natural Sciences
- Tampere University
- Tampere
- Finland
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18
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Gao Y, Wang J, Hu D, Deng Y, Chen T, Jin Q, Ji J. Bacteria-Targeted Supramolecular Photosensitizer Delivery Vehicles for Photodynamic Ablation Against Biofilms. Macromol Rapid Commun 2018; 40:e1800763. [DOI: 10.1002/marc.201800763] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/13/2018] [Indexed: 01/26/2023]
Affiliation(s)
- Yifan Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Jing Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Dengfeng Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Yongyan Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Tingting Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Qiao Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
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19
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Peddinti BST, Scholle F, Ghiladi RA, Spontak RJ. Photodynamic Polymers as Comprehensive Anti-Infective Materials: Staying Ahead of a Growing Global Threat. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25955-25959. [PMID: 30044089 DOI: 10.1021/acsami.8b09139] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
To combat the global threat posed by surface-adhering pathogens that are becoming increasingly drug-resistant, we explore the anti-infective efficacy of bulk thermoplastic elastomer films containing ∼1 wt % zinc-tetra(4- N-methylpyridyl)porphine (ZnTMPyP4+), a photoactive antimicrobial that utilizes visible light to generate singlet oxygen. This photodynamic polymer is capable of inactivating five bacterial strains and two viruses with at least 99.89% and 99.95% success, respectively, after exposure to noncoherent light for 60 min. Unlike other anti-infective methodologies commonly requiring oxidizing chemicals, carcinogenic radiation, or toxic nanoparticles, our approach is nonspecific and safe/nontoxic, and sustainably relies on the availability of just oxygen and visible light.
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20
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Palanivel C, Prabhakaran N, Selvakumar G. WITHDRAWN: Morphological expedient flower like nanostructures WO3-TiO2 Nanocomposite material and its multi applications. OPENNANO 2018. [DOI: 10.1016/j.onano.2018.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Koklic T, Urbančič I, Zdovc I, Golob M, Umek P, Arsov Z, Dražić G, Pintarič Š, Dobeic M, Štrancar J. Surface deposited one-dimensional copper-doped TiO2 nanomaterials for prevention of health care acquired infections. PLoS One 2018; 13:e0201490. [PMID: 30048536 PMCID: PMC6062141 DOI: 10.1371/journal.pone.0201490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/15/2018] [Indexed: 01/03/2023] Open
Abstract
Bacterial infections acquired in healthcare facilities including hospitals, the so called healthcare acquired or nosocomial infections, are still of great concern worldwide and represent a significant economical burden. One of the major causes of morbidity is infection with Methicillin Resistant Staphylococcus aureus (MRSA), which has been reported to survive on surfaces for several months. Bactericidal activity of copper-TiO2 thin films, which release copper ions and are deposited on glass surfaces and heated to high temperatures, is well known even when illuminated with very weak UVA light of about 10 μW/cm2. Lately, there is an increased intrerest for one-dimensional TiO2 nanomaterials, due to their unique properties, low cost, and high thermal and photochemical stability. Here we show that copper doped TiO2 nanotubes produce about five times more ·OH radicals as compared to undoped TiO2 nanotubes and that effective surface disinfection, determined by a modified ISO 22196:2011 test, can be achieved even at low intensity UVA light of 30 μW/cm2. The nanotubes can be deposited on a preformed surface at room temperature, resulting in a stable deposition resistant to multiple washings. Up to 103 microorganisms per cm2 can be inactivated in 24 hours, including resistant strains such as Methicillin-resistant Staphylococcus aureus (MRSA) and Extended-spectrum beta-lactamase Escherichia coli (E. coli ESBL). This disinfection method could provide a valuable alternative to the current surface disinfection methods.
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Affiliation(s)
- Tilen Koklic
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Iztok Urbančič
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- University of Oxford, John Radcliffe Hospital, The Weatherall Institute of Molecular Medicine, Human Immunology Unit, Headington, Oxford, United Kingdom
| | - Irena Zdovc
- NAMASTE Center of Excellence, Ljubljana, Slovenia
- Institute of Microbiology and Parasitology, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Majda Golob
- Institute of Microbiology and Parasitology, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Polona Umek
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Zoran Arsov
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Goran Dražić
- Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, Slovenia
| | - Štefan Pintarič
- Institute of Environmental and Animal Hygiene with Animal Behaviour, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Martin Dobeic
- Institute of Environmental and Animal Hygiene with Animal Behaviour, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Janez Štrancar
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
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22
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Roper DK, Berry KR, Dunklin JR, Chambers C, Bejugam V, Forcherio GT, Lanier M. Effects of geometry and composition of soft polymer films embedded with nanoparticles on rates for optothermal heat dissipation. NANOSCALE 2018; 10:11531-11543. [PMID: 29892737 DOI: 10.1039/c8nr00977e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Embedding soft matter with nanoparticles (NPs) can provide electromagnetic tunability at sub-micron scales for a growing number of applications in healthcare, sustainable energy, and chemical processing. However, the use of NP-embedded soft material in temperature-sensitive applications has been constrained by difficulties in validating the prediction of rates for energy dissipation from thermally insulating to conducting behavior. This work improved the embedment of monodisperse NPs to stably decrease the inter-NP spacings in polydimethylsiloxane (PDMS) to nano-scale distances. Lumped-parameter and finite element analyses were refined to apportion the effects of the structure and composition of the NP-embedded soft polymer on the rates for conductive, convective, and radiative heat dissipation. These advances allowed for the rational selection of PDMS size and NP composition to optimize measured rates of internal (conductive) and external (convective and radiative) heat dissipation. Stably reducing the distance between monodisperse NPs to nano-scale intervals increased the overall heat dissipation rate by up to 29%. Refined fabrication of NP-embedded polymer enabled the tunability of the dynamic thermal response (the ratio of internal to external dissipation rate) by a factor of 3.1 to achieve a value of 0.091, the largest reported to date. Heat dissipation rates simulated a priori were consistent with 130 μm resolution thermal images across 2- to 15-fold changes in the geometry and composition of NP-PDMS. The Nusselt number was observed to increase with the fourth root of the Rayleigh number across thermally insulative and conductive regimes, further validating the approach. These developments support the model-informed design of soft media embedded with nano-scale-spaced NPs to optimize the heat dissipation rates for evolving temperature-sensitive diagnostic and therapeutic modalities, as well as emerging uses in flexible bioelectronics, cell and tissue culture, and solar-thermal heating.
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Affiliation(s)
- D Keith Roper
- Ralph E. Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
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23
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Ozkan E, Allan E, Parkin IP. White-Light-Activated Antibacterial Surfaces Generated by Synergy between Zinc Oxide Nanoparticles and Crystal Violet. ACS OMEGA 2018; 3:3190-3199. [PMID: 30023864 PMCID: PMC6045480 DOI: 10.1021/acsomega.7b01473] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 02/20/2018] [Indexed: 05/29/2023]
Abstract
The prevalence of hospital-acquired infections (HAIs) caused by multidrug-resistant bacteria is a growing public health concern worldwide. Herein, a facile, easily scalable technique is reported to fabricate white-light-activated bactericidal surfaces by incorporating zinc oxide (ZnO) nanoparticles and crystal violet (CV) dye into poly(dimethylsiloxane). The effect of ZnO concentration on photobactericidal activity of CV is investigated, and we show that there is synergy between ZnO and CV. These materials showed highly significant antibacterial activity when tested against Staphylococcus aureus and Escherichia coli under white light conditions. These surfaces have potential to be used in healthcare environments to decrease the impact of HAIs.
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Affiliation(s)
- Ekrem Ozkan
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Elaine Allan
- Department
of Microbial Diseases, UCL Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London WC1X 8LD, United Kingdom
| | - Ivan P. Parkin
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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24
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Peveler WJ, Noimark S, Al-Azawi H, Hwang GB, Crick CR, Allan E, Edel JB, Ivanov AP, MacRobert AJ, Parkin IP. Covalently Attached Antimicrobial Surfaces Using BODIPY: Improving Efficiency and Effectiveness. ACS APPLIED MATERIALS & INTERFACES 2018; 10:98-104. [PMID: 29210273 DOI: 10.1021/acsami.7b13273] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of photoactivated antimicrobial surfaces that kill pathogens through the production of singlet oxygen has proved very effective in recent years, with applications in medical devices and hospital touch surfaces, to improve patient safety and well being. However, many of these surfaces require a swell-encapsulation-shrink strategy to incorporate the photoactive agents in a polymer matrix, and this is resource intensive, given that only the surface fraction of the agent is active against bacteria. Furthermore, there is a risk that the agent will leach from the polymer and thus raises issues of biocompatibility and patient safety. Here, we describe a more efficient method of fabricating a silicone material with a covalently attached monolayer of photoactivating agent that uses heavy-atom triplet sensitization for improved singlet oxygen generation and corresponding antimicrobial activity. We use boron-dipyrromethane with a reactive end group and incorporated Br atoms, covalently attached to poly(dimethylsiloxane). We demonstrate the efficacy of this material in producing singlet oxygen and killing Staphylococcus aureus and suggest how it might be easily modifiable for future antimicrobial surface development.
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Affiliation(s)
- William J Peveler
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K
| | - Sacha Noimark
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K
- Department of Medical Physics and Biomedical Engineering, Malet Place Engineering Building, University College London , London WC1E 6BT, U.K
| | - Hassan Al-Azawi
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K
| | - Gi Byoung Hwang
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K
| | - Colin R Crick
- Materials Innovation Factory, Department of Chemistry, University of Liverpool , Liverpool L69 7ZD, U.K
| | - Elaine Allan
- Division of Microbial Diseases, UCL Eastman Dental Institute, University College London , 256 Gray's Inn Road, London WC1X 8LD, U.K
| | - Joshua B Edel
- Department of Chemistry, Imperial College London , Exhibition Road, London SW7 2AZ, U.K
| | - Aleksandar P Ivanov
- Department of Chemistry, Imperial College London , Exhibition Road, London SW7 2AZ, U.K
| | - Alexander J MacRobert
- Division of Surgery & Interventional Science, Department of Nanotechnology, Royal Free Campus, University College London , Rowland Hill Street, London NW3 2PF, U.K
| | - Ivan P Parkin
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K
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25
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Scanone AC, Gsponer NS, Alvarez MG, Durantini EN. Photodynamic properties and photoinactivation of microorganisms mediated by 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin covalently linked to silica-coated magnetite nanoparticles. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Tan G, Wang Q, Zhang H, Cheng J, Wang Z, Qu F, Guo C, Jin Y. The in vitro photodynamic activity, photophysical and photochemical research of a novel chlorophyll-derived photosensitizer. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1962-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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27
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Weems AC, Raymond JE, Easley AD, Wierzbicki MA, Gustafson T, Monroe M, Maitland DJ. Shape memory polymers with visible and near-infrared imaging modalities: Synthesis, characterization and in vitro analysis. RSC Adv 2017; 7:19742-19753. [PMID: 30288254 PMCID: PMC6168213 DOI: 10.1039/c6ra28165f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Shape memory polymers (SMPs) are promising for non-invasive medical devices and tissue scaffolds, but are limited by a lack of visibility under clinical imaging. Fluorescent dyes are an alternative to radiocontrast agents in medical applications, they can be utilized in chemical sensors and monitors and may be anti-microbial agents. Thus, a fluorescent SMP could be a highly valuable biomaterial system. Here, we show that four fluorescent dyes (phloxine B (PhB), eosin Y (Eos), indocyanine green(IcG), and calcein (Cal)) can be crosslinked into the polymer backbone to enhance material optical properties without alteration of shape memory and thermomechanical properties. Examinations of the emission wavelengths of the materials compared with the dye solutions showed a slight red shift in the peak emissions, indicative of crosslinking of the material. Quantitative analysis revealed that PhB enabled visibility through 1 cm of blood and through soft tissue. We also demonstrate the utility of these methods in combination with radio-opaque microparticle additives and the use of laser-induced shape recovery to allow for rapid shape recovery below the glass transition temperature. The crosslinking of fluorescent dyes into the SMP enables tuning of physical properties and shape memory and independently of the fluorescence functionality. This fluorescent SMP biomaterial system allows for use of multiple imaging modalities with potential application in minimally invasive medical devices.
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Affiliation(s)
- A C Weems
- Biomedical Device Laboratory, Dept of Biomedical Engineering, Texas A&M University, College Station, TX, 77860
| | - J E Raymond
- Laboratory for Synthetic-Biologic Interface, Dept of Chemistry, Texas A&M University, College Station, TX, 77860
| | - A D Easley
- Biomedical Device Laboratory, Dept of Biomedical Engineering, Texas A&M University, College Station, TX, 77860
| | - M A Wierzbicki
- Biomedical Device Laboratory, Dept of Biomedical Engineering, Texas A&M University, College Station, TX, 77860
| | - T Gustafson
- Laboratory for Synthetic-Biologic Interface, Dept of Chemistry, Texas A&M University, College Station, TX, 77860
| | - Mbb Monroe
- Biomedical Device Laboratory, Dept of Biomedical Engineering, Texas A&M University, College Station, TX, 77860
| | - D J Maitland
- Biomedical Device Laboratory, Dept of Biomedical Engineering, Texas A&M University, College Station, TX, 77860
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Felip-León C, Arnau del Valle C, Pérez-Laguna V, Isabel Millán-Lou M, Miravet JF, Mikhailov M, Sokolov MN, Rezusta-López A, Galindo F. Superior performance of macroporous over gel type polystyrene as a support for the development of photo-bactericidal materials. J Mater Chem B 2017; 5:6058-6064. [DOI: 10.1039/c7tb01478c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Macroporous polystyrene resins are best suited than gel-type polymers to develop supported photosensitizers for the generation of bactericidal singlet oxygen.
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Affiliation(s)
- Carles Felip-León
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
| | | | - Vanesa Pérez-Laguna
- Departamento de Microbiología Hospital Universitario Miguel Servet
- Zaragoza
- Spain
| | | | - Juan F. Miravet
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
| | - Maxim Mikhailov
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk
- Russia
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences
- 630090 Novosibirsk
- Russia
| | | | - Francisco Galindo
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
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29
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Krumm C, Tiller JC. Antimicrobial Polymers and Surfaces – Natural Mimics or Surpassing Nature? BIO-INSPIRED POLYMERS 2016. [DOI: 10.1039/9781782626664-00490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Fighting pathogenic microbes is one of the great current challenges of mankind. Nature has developed several techniques to counteract microbial attacks. Science has also yielded several technologies, including antimicrobial polymers as biocides and polymers used for microbe killing and repelling surfaces. Recent scientific antimicrobial approaches are mimicking natural concepts. In this chapter, current developments in antimicrobial and antifouling polymers and surfaces are reviewed and discussed regarding the question whether they mimic nature or surpass it.
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Affiliation(s)
- Christian Krumm
- Department of Bio- and Chemical Engineering, TU Dortmund Emil-Figge-Str. 66 D-44227 Dortmund Germany
| | - Joerg C. Tiller
- Department of Bio- and Chemical Engineering, TU Dortmund Emil-Figge-Str. 66 D-44227 Dortmund Germany
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30
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Sehmi SK, Allan E, MacRobert AJ, Parkin I. The bactericidal activity of glutaraldehyde-impregnated polyurethane. Microbiologyopen 2016; 5:891-897. [PMID: 27255793 PMCID: PMC5061724 DOI: 10.1002/mbo3.378] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/21/2016] [Accepted: 03/30/2016] [Indexed: 11/14/2022] Open
Abstract
Although glutaraldehyde is known to be bactericidal in solution, its potential use to create novel antibacterial polymers suitable for use in healthcare environments has not been evaluated. Here, novel materials were prepared in which glutaraldehyde was either incorporated into polyurethane using a simple "swell-encapsulation-shrink" method (hereafter referred to as "glutaraldehyde-impregnated polyurethane"), or simply applied to the polymer surface (hereafter referred to as "glutaraldehyde-coated polyurethane"). The antibacterial activity of glutaraldehyde-impregnated and glutaraldehyde-coated polyurethane samples was tested against Escherichia coli and Staphylococcus aureus. Glutaraldehyde-impregnated polyurethane resulted in a 99.9% reduction in the numbers of E. coli within 2 h and a similar reduction of S. aureus within 1 h, whereas only a minimal reduction in bacterial numbers was observed when the biocide was bound to the polymer surface. After 15 days, however, the bactericidal activity of the impregnated material was substantially reduced presumably due to polymerization of glutaraldehyde. Thus, although glutaraldehyde retains antibacterial activity when impregnated into polyurethane, activity is not maintained for extended periods of time. Future work should examine the potential of chemical modification of glutaraldehyde and/or polyurethane to improve the useful lifespan of this novel antibacterial polymer.
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Affiliation(s)
- Sandeep K Sehmi
- Department of Chemistry, Materials Chemistry Research Centre, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom
- UCL Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, United Kingdom
- Division of Microbial Disease, UCL Eastman Dental Institute, University College London, 256 Gray's Inn Road, London, WC1X 8LD, United Kingdom
| | - Elaine Allan
- Division of Microbial Disease, UCL Eastman Dental Institute, University College London, 256 Gray's Inn Road, London, WC1X 8LD, United Kingdom
| | - Alexander J MacRobert
- UCL Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, United Kingdom
| | - Ivan Parkin
- Department of Chemistry, Materials Chemistry Research Centre, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom.
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31
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32
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Crick CR, Noimark S, Peveler WJ, Bear JC, Ivanov AP, Edel JB, Parkin IP. Advanced Compositional Analysis of Nanoparticle-polymer Composites Using Direct Fluorescence Imaging. J Vis Exp 2016. [PMID: 27500449 DOI: 10.3791/54178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The fabrication of polymer-nanoparticle composites is extremely important in the development of many functional materials. Identifying the precise composition of these materials is essential, especially in the design of surface catalysts, where the surface concentration of the active component determines the activity of the material. Antimicrobial materials which utilize nanoparticles are a particular focus of this technology. Recently swell encapsulation has emerged as a technique for inserting antimicrobial nanoparticles into a host polymer matrix. Swell encapsulation provides the advantage of localizing the incorporation to the external surfaces of materials, which act as the active sites of these materials. However, quantification of this nanoparticle uptake is challenging. Previous studies explore the link between antimicrobial activity and surface concentration of the active component, but this is not directly visualized. Here we show a reliable method to monitor the incorporation of nanoparticles into a polymer host matrix via swell encapsulation. We show that the surface concentration of CdSe/ZnS nanoparticles can be accurately visualized through cross-sectional fluorescence imaging. Using this method, we can quantify the uptake of nanoparticles via swell encapsulation and measure the surface concentration of encapsulated particles, which is key in optimizing the activity of functional materials.
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Affiliation(s)
| | - Sacha Noimark
- Department of Medical Physics and Biomedical Engineering, University College London; Department of Chemistry, University College London
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33
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Stanley SL, Scholle F, Zhu J, Lu Y, Zhang X, Situ X, Ghiladi RA. Photosensitizer-Embedded Polyacrylonitrile Nanofibers as Antimicrobial Non-Woven Textile. NANOMATERIALS (BASEL, SWITZERLAND) 2016; 6:E77. [PMID: 28335205 PMCID: PMC5302559 DOI: 10.3390/nano6040077] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/11/2016] [Accepted: 04/11/2016] [Indexed: 11/28/2022]
Abstract
Toward the objective of developing platform technologies for anti-infective materials based upon photodynamic inactivation, we employed electrospinning to prepare a non-woven textile comprised of polyacrylonitrile nanofibers embedded with a porphyrin-based cationic photosensitizer; termed PAN-Por(+). Photosensitizer loading was determined to be 34.8 nmol/mg material; with thermostability to 300 °C. Antibacterial efficacy was evaluated against four bacteria belonging to the ESKAPE family of pathogens (Staphylococcus aureus; vancomycin-resistant Enterococcus faecium; Acinetobacter baumannii; and Klebsiella pneumonia), as well as Escherichia coli. Our results demonstrated broad photodynamic inactivation of all bacterial strains studied upon illumination (30 min; 65 ± 5 mW/cm²; 400-700 nm) by a minimum of 99.9996+% (5.8 log units) regardless of taxonomic classification. PAN-Por(+) also inactivated human adenovirus-5 (~99.8% reduction in PFU/mL) and vesicular stomatitis virus (>7 log units reduction in PFU/mL). When compared to cellulose-based materials employing this same photosensitizer; the higher levels of photodynamic inactivation achieved here with PAN-Por(+) are likely due to the combined effects of higher photosensitizer loading and a greater surface area imparted by the use of nanofibers. These results demonstrate the potential of photosensitizer-embedded polyacrylonitrile nanofibers to serve as scalable scaffolds for anti-infective or self-sterilizing materials against both bacteria and viruses when employing a photodynamic inactivation mode of action.
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Affiliation(s)
- Sarah L Stanley
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Frank Scholle
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7614, USA.
| | - Jiadeng Zhu
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA.
| | - Yao Lu
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA.
| | - Xiangwu Zhang
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA.
| | - Xingci Situ
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Reza A Ghiladi
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
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34
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Rice DR, Gan H, Smith BD. Bacterial imaging and photodynamic inactivation using zinc(II)-dipicolylamine BODIPY conjugates. Photochem Photobiol Sci 2016; 14:1271-81. [PMID: 26063101 DOI: 10.1039/c5pp00100e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Targeted imaging and antimicrobial photodynamic inactivation (PDI) are emerging methods for detecting and eradicating pathogenic microorganisms. This study describes two structurally related optical probes that are conjugates of a zinc(II)-dipicolylamine targeting unit and a BODIPY chromophore. One probe is a microbial targeted fluorescent imaging agent, mSeek, and the other is an oxygen photosensitizing analogue, mDestroy. The conjugates exhibited high fluorescence quantum yield and singlet oxygen production, respectively. Fluorescence imaging and detection studies examined four bacterial strains: E. coli, S. aureus, K. pneumonia, and B. thuringiensis vegetative cells and purified spores. The fluorescent probe, mSeek, is not phototoxic and enabled detection of all tested bacteria at concentrations of ∼100 CFU mL(-1) for B. thuringiensis spores, ∼1000 CFU mL(-1) for S. aureus and ∼10,000 CFU mL(-1) for E. coli. The photosensitizer analogue, mDestroy, inactivated 99-99.99% of bacterial samples and selectively killed bacterial cells in the presence of mammalian cells. However, mDestroy was ineffective against B. thuringiensis spores. Together, the results demonstrate a new two-probe strategy to optimize PDI of bacterial infection/contamination.
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Affiliation(s)
- Douglas R Rice
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, 46556 IN, USA.
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35
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Dworniczek E, Plesch G, Seniuk A, Adamski R, Michal R, Čaplovičová M. Photo-catalytic inactivation of an Enterococcus biofilm: the anti-microbial effect of sulphated and europium-doped titanium dioxide nanopowders. FEMS Microbiol Lett 2016; 363:fnw051. [PMID: 26940291 DOI: 10.1093/femsle/fnw051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2016] [Indexed: 11/14/2022] Open
Abstract
The control and prevention of biofilm-related infections is an important public healthcare issue. Given the increasing antibiotic resistance among bacteria and fungi that cause serious infections in humans, promotion of new strategies combating microorganisms has been essential. One attractive approach to inactivate microorganisms is the use of semiconductor photo-catalysis, which has become the subject of extensive research. In this study, the bactericidal properties of four photo-catalysts, TiO₂, TiO₂-S, TiO₂-Eu and TiO₂-Eu-S, were investigated against established 24, 48, 72 and 96 h biofilms of Enterococcus The exposure of biofilms to the catalysts induced the production of superoxide radical anions. The best photo-catalytic inactivation was achieved with the TiO₂-Eu-S and TiO₂-S nanopowders and 24 h biofilms. Transmission electron microscopy images showed significant changes in the structure of the biofilm cells following photo-inactivation. The results suggest that doping with europium and modifying the surface with sulphate groups enhanced the bactericidal activity of the TiO₂ nanoparticles against enterococcal biofilms.
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Affiliation(s)
- Ewa Dworniczek
- Department of Microbiology, Wrocław Medical University, 50-368 Wrocław, Poland
| | - Gustav Plesch
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15 Bratislava, Slovakia
| | - Alicja Seniuk
- Department of Microbiology, Wrocław Medical University, 50-368 Wrocław, Poland
| | - Ryszard Adamski
- Institute of Genetics and Microbiology, University of Wrocław, 51-148 Wrocław, Poland
| | - Róbert Michal
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15 Bratislava, Slovakia
| | - Mária Čaplovičová
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15 Bratislava, Slovakia
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36
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Mosinger J, Lang K, Kubát P. Photoactivatable Nanostructured Surfaces for Biomedical Applications. Top Curr Chem (Cham) 2016; 370:135-68. [DOI: 10.1007/978-3-319-22942-3_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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37
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Hu J, Tang Y, Elmenoufy AH, Xu H, Cheng Z, Yang X. Nanocomposite-Based Photodynamic Therapy Strategies for Deep Tumor Treatment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5860-87. [PMID: 26398119 DOI: 10.1002/smll.201501923] [Citation(s) in RCA: 183] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/03/2015] [Indexed: 05/22/2023]
Abstract
Photodynamic therapy (PDT), as an emerging clinically approved modality, has been used for treatment of various cancer diseases. Conventional PDT strategies are mainly focused on superficial lesions because the wavelength of illumination light of most clinically approved photosensitizers (PSs) is located in the UV/VIS range that possesses limited tissue penetration ability, leading to ineffective therapeutic response for deep-seated tumors. The combination of PDT and nanotechnology is becoming a promising approach to fight against deep tumors. Here, the rapid development of new PDT modalities based on various smartly designed nanocomposites integrating with conventionally used PSs for deep tumor treatments is introduced. Until now many types of multifunctional nanoparticles have been studied, and according to the source of excitation energy they can be classified into three major groups: near infrared (NIR) light excited nanomaterials, X-ray excited scintillating/afterglow nanoparticles, and internal light emission excited nanocarriers. The in vitro and in vivo applications of these newly developed PDT modalities are further summarized here, which highlights their potential use as promising nano-agents for deep tumor therapy.
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Affiliation(s)
- Jun Hu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yong'an Tang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Ahmed H Elmenoufy
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
- Department of Pharmaceutical Chemistry, College of Pharmacy, Misr University for Science and Technology, Al-Motamayez District, 6th of October City, P.O. Box: 77, Egypt
| | - Huibi Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Zhen Cheng
- Molecular Imaging Program at Stanford (MIPS), Canary Center at Stanford for Cancer Early Detection, Department of Radiology and Bio-X Program, School of Medicine, Stanford University Stanford, California, USA
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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38
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Sehmi SK, Noimark S, Weiner J, Allan E, MacRobert AJ, Parkin IP. Potent Antibacterial Activity of Copper Embedded into Silicone and Polyurethane. ACS APPLIED MATERIALS & INTERFACES 2015; 7:22807-22813. [PMID: 26418101 DOI: 10.1021/acsami.5b08665] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A simple, easily up-scalable swell-encapsulation-shrink technique was used to incorporate small 2.5 nm copper nanoparticles (CuNPs) into two widely used medical grade polymers, polyurethane, and silicone, with no significant impact on polymer coloration. Both medical grade polymers with incorporated CuNPs demonstrated potent antimicrobial activity against the clinically relevant bacteria, methicillin-resistant Staphylococcus aureus and Escherichia coli. CuNP-incorporated silicone samples displayed potent antibacterial activity against both bacteria within 6 h. CuNP-incorporated polyurethane exhibited more efficacious antimicrobial activity, resulting in a 99.9% reduction in the numbers of both bacteria within just 2 h. With the high prevalence of hospital-acquired infections, the use of antimicrobial materials such as these CuNP-incorporated polymers could contribute to reducing microbial contamination associated with frequently touched surfaces in and around hospital wards (e.g., bed rails, overbed tables, push plates, etc.).
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Affiliation(s)
- Sandeep K Sehmi
- Materials Chemistry Research Centre, Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- UCL Division of Surgery and Interventional Science, University College London , 67-73 Riding House Street, London W1W 7EJ, United Kingdom
- Department of Microbial Diseases, UCL Eastman Dental Institute, University College London , 256 Gray's Inn Road, London WC1X 8LD, United Kingdom
| | - Sacha Noimark
- Materials Chemistry Research Centre, Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Department of Medical Physics and Biomedicals Engineering, University College London , Gower Street, London WC1E 6BT, United Kingdom
| | - Jonathan Weiner
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, United Kingdom
| | - Elaine Allan
- Department of Microbial Diseases, UCL Eastman Dental Institute, University College London , 256 Gray's Inn Road, London WC1X 8LD, United Kingdom
| | - Alexander J MacRobert
- UCL Division of Surgery and Interventional Science, University College London , 67-73 Riding House Street, London W1W 7EJ, United Kingdom
| | - Ivan P Parkin
- Materials Chemistry Research Centre, Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
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39
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Carpenter BL, Scholle F, Sadeghifar H, Francis AJ, Boltersdorf J, Weare WW, Argyropoulos DS, Maggard PA, Ghiladi RA. Synthesis, Characterization, and Antimicrobial Efficacy of Photomicrobicidal Cellulose Paper. Biomacromolecules 2015; 16:2482-92. [DOI: 10.1021/acs.biomac.5b00758] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | - Hasan Sadeghifar
- Department
of Wood and Paper Science, Sari Branch, Islamic Azad University, P.O. Box 48161-19318, Sari, Iran
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40
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Ballatore MB, Durantini J, Gsponer NS, Suarez MB, Gervaldo M, Otero L, Spesia MB, Milanesio ME, Durantini EN. Photodynamic inactivation of bacteria using novel electrogenerated porphyrin-fullerene C60 polymeric films. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:7456-7463. [PMID: 25984839 DOI: 10.1021/acs.est.5b01407] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A porphyrin-fullerene C60 dyad (TCP-C60) substituted by carbazoyl groups was used to obtain electrogenerated polymeric films on optically transparent indium tin oxide (ITO) electrodes. This approach produced stable and reproducible polymers, holding fullerene units. The properties of this film were compared with those formed by layers of TCP/TCP-C60 and TCP/ZnTCP. Absorption spectra of the films presented the Soret and Q bands of the corresponding porphyrins. The TCP-C60 film produced a high photodecomposition of 2,2-(anthracene-9,10-diyl)bis(methylmalonate), which was used to detect singlet molecular oxygen O2((1)Δg) production in water. In addition, the TCP-C60 film induced the reduction of nitro blue tetrazolium to diformazan in the presence of NADH, indicating the formation of superoxide anion radical. Moreover, photooxidation of L-tryptophan mediated by TCP-C60 films was found in water. In biological media, photoinactivation of Staphylococcus aureus was evaluated depositing a drop with 2.5 × 10(3) cells on the films. After 30 min irradiation, no colony formation was detected using TCP-C60 or TCP/TCP-C60 films. Furthermore, photocytotoxic activity was observed in cell suspensions of S. aureus and Escherichia coli. The irradiated TCP-C60 film produced a 4 log decrease of S. aureus survival after 30 min. Also, a 4 log reduction of E. coli viability was obtained using the TCP-C60 film after 60 min irradiation. Therefore, the TCP-C60 film is an interesting and versatile photodynamic active surface to eradicate bacteria.
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Affiliation(s)
- M Belén Ballatore
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Javier Durantini
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Natalia S Gsponer
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - María B Suarez
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Miguel Gervaldo
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Luis Otero
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Mariana B Spesia
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - M Elisa Milanesio
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Edgardo N Durantini
- Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X5804BYA Río Cuarto, Córdoba, Argentina
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41
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Noimark S, Page K, Bear JC, Sotelo-Vazquez C, Quesada-Cabrera R, Lu Y, Allan E, Darr JA, Parkin IP. Functionalised gold and titania nanoparticles and surfaces for use as antimicrobial coatings. Faraday Discuss 2015; 175:273-87. [PMID: 25370309 DOI: 10.1039/c4fd00113c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the preparation, characterisation and antimicrobial functional testing of various titanium dioxide and gold modified titanium dioxide nanoparticles embedded into a polysiloxane polymer by a swell dip-coating procedure. We show that the surfaces are effective in killing both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria under different lighting conditions. The presence of the nanoparticles was of critical importance in improving the functional properties of the surface. These materials have the potential to reduce hospital-acquired infection, by killing bacteria on the polymer surface.
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Affiliation(s)
- Sacha Noimark
- Materials Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon St, London, WC1H 0AJ, UK.
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42
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Mills A, Wells N. Indoor and outdoor monitoring of photocatalytic activity using a mobile phone app. and a photocatalytic activity indicator ink (paii). J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.10.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Beech SJ, Noimark S, Page K, Noor N, Allan E, Parkin IP. Incorporation of crystal violet, methylene blue and safranin O into a copolymer emulsion; the development of a novel antimicrobial paint. RSC Adv 2015. [DOI: 10.1039/c5ra01673h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Crystal violet, methylene blue and safranin O were successfully incorporated into a co-polymer emulsion to make a potent antimicrobial paint.
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Affiliation(s)
- Sidney J. Beech
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Sacha Noimark
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Kristopher Page
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Nuruzzaman Noor
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Elaine Allan
- Division of Microbial Diseases
- UCL Eastman Dental Institute
- University College London
- London
- UK
| | - Ivan P. Parkin
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
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44
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Albiter E, Alfaro S, Valenzuela MA. Photosensitized oxidation of 9,10-dimethylanthracene with singlet oxygen by using a safranin O/silica composite under visible light. Photochem Photobiol Sci 2015; 14:597-602. [DOI: 10.1039/c4pp00261j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photo-oxidation of DMA could be carried out in 3 steps: the first step is the photosensitized production of 1O2 near the surface of the composite; the second step is the diffusion of 1O2 from the surroundings of the surface to the solvent and the third step is the homogeneous reaction between 1O2 and DMA.
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Affiliation(s)
- Elim Albiter
- Lab. Catálisis y Materiales
- ESIQIE-Instituto Politécnico Nacional
- 07738 México
- D.F. México
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico UNAM
| | - Salvador Alfaro
- Lab. Catálisis y Materiales
- ESIQIE-Instituto Politécnico Nacional
- 07738 México
- D.F. México
| | - Miguel A. Valenzuela
- Lab. Catálisis y Materiales
- ESIQIE-Instituto Politécnico Nacional
- 07738 México
- D.F. México
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45
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Sehmi SK, Noimark S, Bear JC, Peveler WJ, Bovis M, Allan E, MacRobert AJ, Parkin IP. Lethal photosensitisation of Staphylococcus aureus and Escherichia coli using crystal violet and zinc oxide-encapsulated polyurethane. J Mater Chem B 2015; 3:6490-6500. [DOI: 10.1039/c5tb00971e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bactericidal polymer surfaces were prepared by crystal violet and ZnO nanoparticle encapsulation, demonstrating 99.9% dark kill ofE. coli.
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Affiliation(s)
- Sandeep K. Sehmi
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Sacha Noimark
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Joseph C. Bear
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - William J. Peveler
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Melissa Bovis
- UCL Division of Surgery and Interventional Science
- University College London
- London
- UK
| | - Elaine Allan
- Division of Microbial Diseases
- UCL Eastman Dental Institute
- University College London
- London
- UK
| | | | - Ivan P. Parkin
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
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46
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Mills A, Wells N. Smart, reusable labels for assessing self-cleaning films. Chem Commun (Camb) 2015; 51:4161-3. [DOI: 10.1039/c4cc09734c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel, reusable photocatalyst activity indicator label undergoes a rapid colour change when placed in contact with a photocatalytic film via the photoreduction of methylene blue contained within the label's adhesive, and is ideal for assessing photocatalytic activity in situ and in laboratory work.
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Affiliation(s)
- A. Mills
- Department of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast
- UK
| | - N. Wells
- Department of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast
- UK
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47
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Crick CR, Noimark S, Peveler WJ, Bear JC, Ivanov AP, Edel JB, Parkin IP. Advanced analysis of nanoparticle composites – a means toward increasing the efficiency of functional materials. RSC Adv 2015. [DOI: 10.1039/c5ra08788k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Direct visualisation of embedded nanoparticles allows for quantification of their concentration, at the surface and the bulk of host matrix.
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Affiliation(s)
- C. R. Crick
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - S. Noimark
- Department of Chemistry
- University College London
- London
- UK
| | | | - J. C. Bear
- Department of Chemistry
- University College London
- London
- UK
| | - A. P. Ivanov
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - J. B. Edel
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - I. P. Parkin
- Department of Chemistry
- University College London
- London
- UK
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48
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Light-activated antibacterial screen protectors for mobile telephones and tablet computers. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.08.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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50
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Brovko L, Anany H, Bayoumi M, Giang K, Kunkel E, Lim E, Naboka O, Rahman S, Li J, Filipe C, Griffiths M. Antimicrobial light-activated materials: towards application for food and environmental safety. J Appl Microbiol 2014; 117:1260-6. [DOI: 10.1111/jam.12622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 07/20/2014] [Accepted: 08/12/2014] [Indexed: 10/24/2022]
Affiliation(s)
- L. Brovko
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
| | - H. Anany
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
- Microbiology Department; Faculty of Science; Ain Shams University; Cairo Egypt
| | - M. Bayoumi
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
- Food Control Department; Faculty of Veterinary Medicine; Zagazig University; Zagazig Egypt
| | - K. Giang
- Department of Chemical Engineering; McMaster University; Hamilton ON Canada
| | - E. Kunkel
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
| | - E. Lim
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
| | - O. Naboka
- Department of Chemical Engineering; McMaster University; Hamilton ON Canada
| | - S. Rahman
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
| | - J. Li
- Department of Chemical Engineering; McMaster University; Hamilton ON Canada
| | - C.D.M. Filipe
- Department of Chemical Engineering; McMaster University; Hamilton ON Canada
| | - M.W. Griffiths
- Canadian Research Institute for Food Safety; University of Guelph; Guelph ON Canada
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