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Cagnetta GE, Martínez SR, Ibarra LE, Gallastegui A, Martucci JF, Palacios RE, Chesta CA, Gómez ML. Reusable antimicrobial antibiotic-free dressings obtained by photopolymerization. BIOMATERIALS ADVANCES 2023; 149:213399. [PMID: 37011423 DOI: 10.1016/j.bioadv.2023.213399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023]
Abstract
In recent years significant efforts have been made to develop new materials for wound dressing with improved healing properties. However, the synthesis methods usually employed to this end are often complex or require several steps. We describe here the synthesis and characterization of antimicrobial reusable dermatological wound dressings based on N-isopropylacrylamide co-polymerized with [2-(Methacryloyloxy) ethyl] trimethylammonium chloride hydrogels (NIPAM-co-METAC). The dressings were obtained with a very efficient single-step synthesis procedure based on visible light (455 nm) by photopolymerization. To this end, F8BT nanoparticles of the conjugated polymer (poly(9,9-dioctylfluorene-alt-benzothiadiazole) - F8BT) were used as macro-photoinitiators, and a modified silsesquioxane was employed as crosslinker. Dressings obtained by this simple and gentle method show antimicrobial and wound healing properties, without the incorporation of antibiotics or any other additives. The physical and mechanical properties of these hydrogel-based dressings were evaluated, as well as their microbiological properties, through in vitro experiments. Results show that dressings with a molar ratio of METAC of 0.5 or higher exhibit high swelling capacity, appropriate water vapor transmission rate values, stability and thermal response, high ductility and adhesiveness. In addition, biological tests showed that the dressings have significant antimicrobial capacity. The best inactivation performance was found for hydrogels synthesized with the highest METAC content. The dressings were tested several times with fresh bacterial cultures, showing a bacterial kill efficiency of 99.99 % even after three repetitions in a row, employing the same dressing, demonstrating the intrinsic bactericidal property of the materials and their reusability. In addition, the gels show low hemolytic effect, high dermal biocompatibility and noticeable wound healing effects. Overall results demonstrate that some specific hydrogel formulations have potential application as dermatological dressings for wound healing and disinfection.
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Affiliation(s)
- Gonzalo E Cagnetta
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina
| | - Sol R Martínez
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina
| | - Luis E Ibarra
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina
| | - Antonela Gallastegui
- POLYMAT, University of the Basque Country UPV/EHU, Avenida Tolosa 72, Donostia-San Sebastian 20018, Gipuzkoa, Spain
| | - Josefa F Martucci
- Instituto de Investigaciones en Ciencias y Tecnología de los Materiales (INTEMA), Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Colón 10850, 7600 Mar del Plata, Argentina
| | - Rodrigo E Palacios
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina
| | - Carlos A Chesta
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina
| | - María L Gómez
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Campus Universitario, 5800 Río Cuarto, Argentina.
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Pereyra JYDC, Barbero CA, Acevedo DF, Yslas EI. Antibacterial effects of in situzinc oxide nanoparticles generated inside the poly (acrylamide-co-hydroxyethylmethacrylate) nanocomposite. NANOTECHNOLOGY 2022; 34:045101. [PMID: 36215962 DOI: 10.1088/1361-6528/ac98cf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The present work reports the antibacterial activity againstPseudomonasaeruginosaof a nanocomposite made of zinc oxide nanoparticles dispersed in a poly(acrylamide-co-hydroxyethylmethacrylate) matrix (PAAm-Hema-ZnONPs). Thein situsynthesis of ZnONPs inside of the PAAm-Hema crosslinked network is described. Moreover, the physicochemical properties of the PAAm-Hema-ZnONPs nanocomposite are analyzed. The results confirm that the PAAm-Hema hydrogel provides an excellent scaffold to generate ZnONPs. The presence of ZnONPs inside the hydrogel was confirmed by UV-visible (band at 320 nm), by Infrared spectroscopy (peak at 470 cm-1), SEM, and TEM images. The presence of NPs in PAAm-Hema diminish the swelling percentage by 70%, and the Young modulus by 33.7%, compared with pristine hydrogel. The 75% of ZnONPs are released from the nanocomposite after 48 h of spontaneous diffusion, allowing the use of the nanocomposite as an antibacterial agent.In vitro, the agar diffusion test presents an inhibition halo againstP. aeruginosabacteria 50% higher than the unloaded hydrogel. Also, the PAAm-Hema-ZnONPs live/dead test shows 54% of dead cells more than the hydrogel. These results suggest that the easy, one-step way generated composites can be used in biomedical applications as antimicrobial agents.
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Affiliation(s)
- J Y Del C Pereyra
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemistry Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - C A Barbero
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemistry Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - D F Acevedo
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemical Technology Department, Faculty of Engineering, National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - E I Yslas
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Molecular Biology Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
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Bredov NS, Nguyen VT, Zaitseva DS, Kireev VV, Gorlov MV, Sokol’skaya IB, Polyakov VA. Structure of the Products of Hydrolytic Copolycondensation of 3-Aminopropyltriethoxysilane and 3-Methacryloxypropyltrimetoxysilane: NMR Study. POLYMER SCIENCE SERIES B 2021. [DOI: 10.1134/s1560090421040047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gallastegui A, Zambroni ME, Chesta CA, Palacios RE, Gómez ML. New bifunctional cross-linkers / co-initiators for vinyl photopolymerization: Silsesquioxanes - B2 vitamin as eco-friendly hybrid photoinitiator systems. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Controlled release of antibiotics from photopolymerized hydrogels: Kinetics and microbiological studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:896-905. [PMID: 31147061 DOI: 10.1016/j.msec.2019.04.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/28/2019] [Accepted: 04/11/2019] [Indexed: 01/22/2023]
Abstract
The development of convenient synthetic methods and improved materials for the production of high load-capacity and biocompatible drug delivery systems is a challenging task with important implications in health sciences. In this work, acrylamide/2-hydroxyethylmethacrylate and N-isopropylacrylamide/2-hydroxyethylmethacrylate hydrogels were synthesized by photopolymerization using energy-efficient green-LEDs. A functionalized silsesquioxane was used as both crosslinker and co-initiator for the photopolymerization. The hybrid organic-inorganic nature of the silsesquioxane improved the resulting hydrogels' properties increasing their swelling capacity and biocompatibility. Additionally, the mild conditions used during the photopolymerization allowed the synthesis of hydrogels in the presence of antibiotics yielding high load-capacity materials in which the drug preserves its molecular structure and antimicrobial activity (as confirmed by HPLC and microbiological assays). The materials were characterized by FTIR, DSC and SEM. Additionally, the kinetics of gels´ swelling and drug release were studied under physiological conditions (pH 7.4 and 37 °C). The results demonstrate how hydrogel composition affects the antibiotics-release kinetics. The final drug release percentage increased with increasing molar fraction of acrylamide or N-isopropylacrylamide and in most cases exceeded 85%. Finally, the antibacterial effect of loaded gels was characterized using a number of assays against Gram negative and Gram positive bacteria. The observed antibacterial effect correlated well with swelling and drug release results. Furthermore, gels are not toxic for isolated erythrocytes as demonstrated by haemolytic tests. Overall, our results indicate that the produced hydrogels are promising materials to develop controlled drug-delivery devices such as capsules, dermatological patches and others.
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Gómez ML, Gallastegui A, Spesia MB, Montejano HA, Williams RJ, Previtali CM. Synthesis of poly(HEMA-co-AAm) hydrogels by visible-light photopolymerization of aqueous solutions containing aspirin or ibuprofen: analysis of the initiation mechanism and the drug release. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3958] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- María Lorena Gómez
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Campus Universitario 5800 Río Cuarto Argentina
| | - Antonela Gallastegui
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Campus Universitario 5800 Río Cuarto Argentina
| | - Mariana B. Spesia
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Campus Universitario 5800 Río Cuarto Argentina
| | - Hernán A. Montejano
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Campus Universitario 5800 Río Cuarto Argentina
| | - Roberto J. Williams
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA); Universidad Nacional de Mar del Plata, CONICET; J. B. Justo 4302 7600 Mar del Plata Argentina
| | - Carlos M. Previtali
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Campus Universitario 5800 Río Cuarto Argentina
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Sun HW, Zhang LY, Zhu XJ, Wang XF. Magnetic Poly(PEGMA–MAA) Nanoparticles: Photochemical Preparation and Potential Application in Drug Delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 20:1675-86. [DOI: 10.1163/156856208x386264] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Han-Wen Sun
- a Dezhou Institute of Advanced Materials, Dezhou University, Dezhou 253023, P. R. China
| | - Lian-Ying Zhang
- b Dezhou Institute of Advanced Materials, Dezhou University, Dezhou 253023, P. R. China
| | - Xin-Jun Zhu
- c Dezhou Institute of Advanced Materials, Dezhou University, Dezhou 253023, P. R. China
| | - Xin-Fang Wang
- d Dezhou Institute of Advanced Materials, Dezhou University, Dezhou 253023, P. R. China
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Farias M, Coelho L, Pezzin S. Epoxy/silsesquioxane organic-inorganic hybrids: Sol-gel synthesis of inorganic precursors containing amino and phenyl groups. POLYM ENG SCI 2011. [DOI: 10.1002/pen.22044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gao F, Liu J, Peng H, Hu N, Li H, Zhang S. Synthesis, spectroscopy and photochemistry of novel branched fluorescent nitro-stilbene derivatives with benzopheonone groups. J Fluoresc 2010; 20:703-12. [PMID: 20177746 DOI: 10.1007/s10895-010-0611-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Accepted: 02/07/2010] [Indexed: 11/26/2022]
Abstract
In this article, we presented novel nitro-stilbene derivatives with one or two benzophenone groups as photoinitiators via multi-steps synthesis. The ultraviolet/visible spectroscopy and the emission spectroscopy of the compounds were determined in various solvents. The results showed that the ultraviolet/visible absorption spectroscopy of the derivatives with benzophenone moiety displayed overlap effects of nitro-stilbene and benzophenone parts. In non-polar solvents, the derivatives exhibited strong emission, while they displayed weak emission in modest and strong polar solvents. Dyes-linked benzopheonone groups displayed stronger fluorescence emission than simple chromophore parent molecules. Visible-light photoinitiating effects of the derivatives were investigated extensively. Methyl methacrylate could be photoinitiated efficiently by the derivatives with benzophenone moieties at very low concentration, even at 1 x 10(-5) mol/L. While the photopolymerization efficiency of styrene initiated by the derivatives was lower than that of methyl methacrylate. Our results showed that the dye-linked photoinitators had more efficient photoinitiating than the simple mixture of dye and photoinitator. Furthermore, the derivative with two benzophenone groups displayed more excellent photoiniatiating effects than the derivative with one benzophenone group. Thermodynamics driving for the occurrence of visible-light photoinduced intramolecular electron transfer from chromophore part to benzophenone part was evaluated. Benzopinacol moiety produced in photoreaction was confirmed by nuclear magnetic resonant spectroscopy. Thermal stability of the derivatives was analyzed.
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Affiliation(s)
- Fang Gao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
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Yi F, Zheng S. Effect of hydrophobic polystyrene microphases on temperature-responsive behavior of poly(N-isopropylacrylamide) hydrogels. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.11.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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