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Idriss H, Kutová A, Rimpelová S, Elashnikov R, Kolská Z, Lyutakov O, Švorčík V, Slepičková Kasálková N, Slepička P. Polymer-Metal Bilayer with Alkoxy Groups for Antibacterial Improvement. Polymers (Basel) 2024; 16:508. [PMID: 38399886 PMCID: PMC10892951 DOI: 10.3390/polym16040508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Many bio-applicable materials, medical devices, and prosthetics combine both polymer and metal components to benefit from their complementary properties. This goal is normally achieved by their mechanical bonding or casting only. Here, we report an alternative easy method for the chemical grafting of a polymer on the surfaces of a metal or metal alloys using alkoxy amine salt as a coupling agent. The surface morphology of the created composites was studied by various microscopy methods, and their surface area and porosity were determined by adsorption/desorption nitrogen isotherms. The surface chemical composition was also examined by various spectroscopy techniques and electrokinetic analysis. The distribution of elements on the surface was determined, and the successful bonding of the metal/alloys on one side with the polymer on the other by alkoxy amine was confirmed. The composites show significantly increased hydrophilicity, reliable chemical stability of the bonding, even interaction with solvent for thirty cycles, and up to 95% less bacterial adhesion for the modified samples in comparison with pristine samples, i.e., characteristics that are promising for their application in the biomedical field, such as for implants, prosthetics, etc. All this uses universal, two-step procedures with minimal use of energy and the possibility of production on a mass scale.
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Affiliation(s)
- Hazem Idriss
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Anna Kutová
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Roman Elashnikov
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Zdeňka Kolská
- Faculty of Science, J. E. Purkyně University, 400 96 Usti nad Labem, Czech Republic
| | - Oleksiy Lyutakov
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Václav Švorčík
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Nikola Slepičková Kasálková
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Petr Slepička
- Department of Solid-State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
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2
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Xiao J, Li P, Zhang X, Wang X. Study on Preparation of Regenerated Cellulose Fiber from Biomass Based on Mixed Solvents. MATERIALS (BASEL, SWITZERLAND) 2024; 17:819. [PMID: 38399070 PMCID: PMC10889912 DOI: 10.3390/ma17040819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/26/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024]
Abstract
In this study, Arundo donax Linnaeus was utilized as the biomass and a TH/DS (Tetra-n-butylammonium hydroxide/Dimethyl sulfoxide, C16H37NO/C2H6OS) system was employed to dissolve biomass cellulose. The optimal process for the preparation of Arundo donax L. biomass regenerated cellulose fiber was determined through process optimization. The physical properties and antimicrobial performance of the resulting products were analyzed. The results demonstrated that the physical indicators of biomass regenerated cellulose fiber, prepared from Arundo donax L. cellulose, met the requirements of the standard for Viscose Filament (Dry breaking strength ≥ 1.65 CN/dtex, Elongation at dry breaking 15.5-26.0%, and Dry elongation CV value ≤ 10.0%). Additionally, excellent antimicrobial properties were exhibited by the biomass regenerated cellulose fiber developed in this study, with antibacterial rates against Staphylococcus aureus and other three strain indexes meeting the Viscose Filament standards. Furthermore, high antiviral activity of 99.99% against H1N1 and H3N2 strains of influenza A virus was observed in the experimental samples, indicating a remarkable antiviral effect. Valuable references for the comprehensive utilization of Arundo donax L. biomass resources are provided by this research.
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Affiliation(s)
- Junjiang Xiao
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China;
| | - Pengcheng Li
- Central Grain Reserve Qingdao Depot Co., Ltd., Qingdao 266109, China;
| | - Xiaotao Zhang
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, China
| | - Ximing Wang
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China;
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, China
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3
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Khaliullina A, Kolesnikova A, Khairullina L, Morgatskaya O, Shakirova D, Patov S, Nekrasova P, Bogachev M, Kurkin V, Trizna E, Kayumov A. The Antimicrobial Potential of the Hop ( Humulus lupulus L.) Extract against Staphylococcus aureus and Oral Streptococci. Pharmaceuticals (Basel) 2024; 17:162. [PMID: 38399377 PMCID: PMC10893079 DOI: 10.3390/ph17020162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/18/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Plant extracts are in the focus of the pharmaceutical industry as potential antimicrobials for oral care due to their high antimicrobial activity coupled with low production costs and safety for eukaryotic cells. Here, we show that the extract from Hop (Humulus lupulus L.) exhibits antimicrobial activity against Staphylococcus aureus and Streptococci in both planktonic and biofilm-embedded forms. An extract was prepared by acetone extraction from hop infructescences, followed by purification and solubilization of the remaining fraction in ethanol. The effect of the extract on S. aureus (MSSA and MRSA) was comparable with the reference antibiotics (amikacin, ciprofloxacin, and ceftriaxone) and did not depend on the bacterial resistance to methicillin. The extract also demonstrated synergy with amikacin on six S. aureus clinical isolates, on four of six isolates with ciprofloxacin, and on three of six isolates with ceftriaxone. On various Streptococci, while demonstrating lower antimicrobial activity, an extract exhibited a considerable synergistic effect in combination with two of three of these antibiotics, decreasing their MIC up to 512-fold. Moreover, the extract was able to penetrate S. aureus and S. mutans biofilms, leading to almost complete bacterial death within them. The thin-layer chromatography and LC-MS of the extract revealed the presence of prenylated flavonoids (2',4',6',4-tetrahydroxy-3'-geranylchalcone) and acylphloroglucides (cohumulone, colupulone, humulone, and lupulone), apparently responsible for the observed antimicrobial activity and ability to increase the efficiency of antibiotics. Taken together, these data suggest an extract from H. lupulus as a promising antimicrobial agent for use both as a solely antiseptic and to potentiate conventional antimicrobials.
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Affiliation(s)
- Alyona Khaliullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Alyona Kolesnikova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Leysan Khairullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Olga Morgatskaya
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Dilyara Shakirova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Sergey Patov
- Institute of Chemistry, FRC “Komi Scientific Centre”, Ural Branch of the Russian Academy of Sciences, 167000 Syktyvkar, Russia; (S.P.); (P.N.)
| | - Polina Nekrasova
- Institute of Chemistry, FRC “Komi Scientific Centre”, Ural Branch of the Russian Academy of Sciences, 167000 Syktyvkar, Russia; (S.P.); (P.N.)
| | - Mikhail Bogachev
- Biomedical Engineering Research Centre, St. Petersburg Electrotechnical University, 5 Professor Popov Street, 197022 St. Petersburg, Russia;
| | - Vladimir Kurkin
- Institute of Pharmacy, Samara State Medical University, 443079 Samara, Russia;
| | - Elena Trizna
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
| | - Airat Kayumov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; (A.K.); (A.K.); (L.K.); (O.M.); (D.S.); (E.T.)
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4
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Ghosh S, Lahiri D, Nag M, Dey A, Sarkar T, Biswas R, Dutta B, Mukherjee D, Pati S, Pattanaik S, Ray RR. Analysis of Antibiofilm Activities of Bioactive Compounds from Honeyweed (Leonurus sibiricus) Against P. aeruginosa: an In Vitro and In Silico Approach. Appl Biochem Biotechnol 2023; 195:5312-5328. [PMID: 34989967 DOI: 10.1007/s12010-021-03797-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2021] [Indexed: 12/21/2022]
Abstract
Leonurus sibiricus (Red verticilla, honeyweed) is a type of herbaceous plant predominantly found in Asian subcontinents as weed in crop fields and is widely used for treating diabetes, bronchitis, and menstrual irregularities. However, there is a dearth of study in the application of the plant phytocompounds for treating biofilm-associated chronic infections. The bioactive compounds mainly comprise of tri-terpenes, di-terpenes, phenolic acid, and flavonoids which may have potential role as antimicrobial and antibiofilm agents. Acute and chronic infection causing microbes usually form biofilm and develop virulence factors and antibiotic resistance through quorum sensing (QS). In this study, the bioactive compounds leosibirin, sibiricinone A, leosibirone A, leonotin, quercetin, lavandulifolioside, and myricetin were identified using GC-MS analysis. These were used for analyzing the antibiofilm and anti-quorum sensing activities (rhamnolipid, AHL assay, swarming motility assay) against the biofilm formed by Pseudomonas aeruginosa, the most significant nosocomial disease-causing bacteria. The compounds were able to bring about maximum inhibition in biofilm formation and QS. Although the antibiofilm activity of the phytoextract was found to be higher than that of individual phytocompounds at a concentration of 250 µg/mL, quercetin and myricetin showed highest antibiofilm activity against Pseudomonas aeruginosa, respectively, at MIC values of 135 µg/mL and 150 µg/mL against P aeruginosa. FT-IR study also revealed that the active ingredients were able to bring about the destruction of exopolysaccharides (EPS). These observations were further validated by molecular docking interactions that showed the active ingredients inhibit the functioning of QS sensing proteins by binding with them. It was observed that myricetin showed better interactions with the QS proteins of P. aeruginosa. Myricetin and quercetin show considerable inhibition of biofilm in comparison to the phytocompounds. Thus, the present study suggests that the active compounds from L. sibiricus can be used as an alternate strategy in inhibiting the biofilm formed by pathogenic organisms.
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Affiliation(s)
- Sreejita Ghosh
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, West Bengal, India
| | - Dibyajit Lahiri
- Department of Biotechnology, University of Engineering & Management, Kolkata, West Bengal, India
| | - Moupriya Nag
- Department of Biotechnology, University of Engineering & Management, Kolkata, West Bengal, India
| | - Ankita Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, West Bengal, India
| | - Tanmay Sarkar
- Department of Food Technology and Bio-Chemical Engineering, Jadavpur University, Kolkata, 700032, India
- Malda Polytechnic, West Bengal State Council of Technical Education, Government of West Bengal, Malda, 732102, India
| | - Riya Biswas
- Department of Biotechnology, University of Engineering & Management, Kolkata, West Bengal, India
| | - Bandita Dutta
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, West Bengal, India
| | - Dipro Mukherjee
- Department of Biotechnology, University of Engineering & Management, Kolkata, West Bengal, India
| | - Siddhartha Pati
- SIAN Institute, Association for Biodiversity Conservation and Research (ABC), 756001, Odisha, India
- Department of Biotechnology, Academy of Management and Information Technology, Khordha, 752057, Odisha, India
| | - Smaranika Pattanaik
- Department of Biotechnology & Bioinformatics, Sambalpur University, Odisha, India
| | - Rina Rani Ray
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, West Bengal, India.
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Slepička P, Slepičková Kasálková N, Fajstavr D, Frýdlová B, Sajdl P, Kolská Z, Švorčík V. Nanostructures on Fluoropolymer Nanotextile Prepared Using a High-Energy Excimer Laser. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4280. [PMID: 37374464 DOI: 10.3390/ma16124280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
This study is focused on polytetrafluoroethylene (PTFE) porous nanotextile and its modification with thin, silver sputtered nanolayers, combined with a subsequent modification with an excimer laser. The KrF excimer laser was set to single-shot pulse mode. Subsequently, the physico chemical properties, morphology, surface chemistry, and wettability were determined. Minor effects of the excimer laser on the pristine PTFE substrate were described, but significant changes were observed after the application of the excimer laser to the polytetrafluoroethylene with sputtered silver, where the formation of a silver nanoparticles/PTFE/Ag composite was described, with a wettability similar to that of a superhydrophobic surface. Both scanning electron microscopy and atomic force microscopy revealed the formation of superposed globular structures on the polytetrafluoroethylene lamellar primary structure, which was also confirmed using energy dispersive spectroscopy. The combined changes in the surface morphology, chemistry, and thus wettability induced a significant change in the PTFE's antibacterial properties. Samples coated with silver and further treated with the excimer laser 150 mJ/cm2 inhibited 100% of the bacterial strain E. coli. The motivation of this study was to find a material with flexible and elastic properties and a hydrophobic character, with antibacterial properties that could be enhanced with silver nanoparticles, but hydrophobic properties that would be maintained. These properties can be used in different types of applications, mainly in tissue engineering and the medicinal industry, where water-repellent materials may play important roles. This synergy was achieved via the technique we proposed, and even when the Ag nanostructures were prepared, the high hydrophobicity of the system Ag-polytetrafluorethylene was maintained.
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Affiliation(s)
- Petr Slepička
- Department of Solid State Engineering, The University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Nikola Slepičková Kasálková
- Department of Solid State Engineering, The University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Dominik Fajstavr
- Department of Solid State Engineering, The University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Bára Frýdlová
- Department of Solid State Engineering, The University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
| | - Petr Sajdl
- Department of Power Engineering, The University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic
| | - Zdeňka Kolská
- Faculty of Science, J. E. Purkyně University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic
| | - Václav Švorčík
- Department of Solid State Engineering, The University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic
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6
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Fajstavr D, Fajstavrová K, Frýdlová B, Slepičková Kasálková N, Švorčík V, Slepička P. Biopolymer Honeycomb Microstructures: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:772. [PMID: 36676507 PMCID: PMC9863042 DOI: 10.3390/ma16020772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
In this review, we present a comprehensive summary of the formation of honeycomb microstructures and their applications, which include tissue engineering, antibacterial materials, replication processes or sensors. The history of the honeycomb pattern, the first experiments, which mostly involved the breath figure procedure and the improved phase separation, the most recent approach to honeycomb pattern formation, are described in detail. Subsequent surface modifications of the pattern, which involve physical and chemical modifications and further enhancement of the surface properties, are also introduced. Different aspects influencing the polymer formation, such as the substrate influence, a particular polymer or solvent, which may significantly contribute to pattern formation, and thus influence the target structural properties, are also discussed.
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Hamed S, Emara M. Antibacterial and Antivirulence Activities of Acetate, Zinc Oxide Nanoparticles, and Vitamin C Against E. coli O157:H7 and P. aeruginosa. Curr Microbiol 2023; 80:57. [PMID: 36588146 PMCID: PMC9805986 DOI: 10.1007/s00284-022-03151-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/12/2022] [Indexed: 01/03/2023]
Abstract
Infectious diseases remain one of the major health challenges worldwide due to the problem of antimicrobial resistance. Conventional antimicrobials have the disadvantage that bacteria rapidly acquire resistance to them, so alternatives must be developed to combat antibiotic resistance. Nanotechnology and the repurposing of existing drugs with known biological profiles are new approaches to replacing conventional antimicrobials. In this paper, we have tested the antibacterial activity of sodium acetate (NaA), vitamin C (VC), and zinc oxide nanoparticles (ZnO NPs) against Escherichia coli O157:H7 ATCC 51659 and Pseudomonas aeruginosa ATCC 27853. MIC values for tested compounds ranged from 0.08 to 6.5 mg ml-1, and the effect of combinations and safety profiles against HepG2 cell line of these compounds were also evaluated. At sub-MIC values, tested compounds had a potential antivirulence effect by inhibiting motility and reducing biofilm formation and maturation. Collectively, ZnO NPs and VC are considered safe alternatives to traditional antibiotics that are capable of reducing the development of antibiotic resistance in microbes. Graphical abstract representing the main aim and the final findings of our work. Spread of multidrug-resistant (MDR) bacterial strains created an urge for alternative safe antimicrobial agents. In this work, we found that ZnO NPs and vitamin C are potential candidates that could be used against MDR E.coli and P. aeruginosa.
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Affiliation(s)
- Selwan Hamed
- grid.412093.d0000 0000 9853 2750Department of Microbiology and Immunology, Faculty of Pharmacy, Helwan University - Ain Helwan, Helwan, 11795 Egypt
| | - Mohamed Emara
- grid.412093.d0000 0000 9853 2750Department of Microbiology and Immunology, Faculty of Pharmacy, Helwan University - Ain Helwan, Helwan, 11795 Egypt
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Slepička P, Siegel J, Šlouf M, Fajstavr D, Fajstavrová K, Kolská Z, Švorčík V. The Functionalization of a Honeycomb Polystyrene Pattern by Excimer Treatment in Liquid. Polymers (Basel) 2022; 14:polym14224944. [PMID: 36433071 PMCID: PMC9698802 DOI: 10.3390/polym14224944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022] Open
Abstract
In this article, we present a unique combination of techniques focusing on the immobilization of noble metal nanoparticles into a honeycomb polystyrene pattern prepared with the improved phase-separation technique. The procedure consists of two main steps: the preparation of the honeycomb pattern (HCP) on a perfluoroethylenepropylene substrate (FEP), followed by an immobilization procedure realized by the honeycomb pattern's exposure to an excimer laser in a noble metal nanoparticle solution. The surface physico-chemical properties, mainly the surface morphology and chemistry, are characterized in detail in the study. The two-step procedure represents the unique architecture of the surface immobilization process, which reveals a wide range of potential applications, mainly in tissue engineering, but also as substrates for analytical use.
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Affiliation(s)
- Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
- Correspondence:
| | - Jakub Siegel
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Miroslav Šlouf
- Innovation Centre of the Institute of Macromolecular Chemistry, Academy of Sciences of Czech Republic, Prague 6 Brevnov, 16200 Prague, Czech Republic
| | - Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Klára Fajstavrová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Zdeňka Kolská
- Faculty of Science, J. E. Purkyne University, 40001 Usti Nad Labem, Czech Republic
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
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Hurtuková K, Vašinová T, Kasálková NS, Fajstavr D, Rimpelová S, Pavlíčková VS, Švorčík V, Slepička P. Antibacterial Properties of Silver Nanoclusters with Carbon Support on Flexible Polymer. NANOMATERIALS 2022; 12:nano12152658. [PMID: 35957089 PMCID: PMC9370165 DOI: 10.3390/nano12152658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/30/2022] [Accepted: 07/31/2022] [Indexed: 12/10/2022]
Abstract
Here, we aimed at the preparation of an antibacterial surface on a flexible polydimethylsiloxane substrate. The polydimethylsiloxane surface was sputtered with silver, deposited with carbon, heat treated and exposed to excimer laser, and the combinations of these steps were studied. Our main aim was to find the combination of techniques applicable both against Gram-positive and Gram-negative bacteria. The surface morphology of the structures was determined by atomic force microscopy and scanning electron microscopy. Changes in surface chemistry were conducted by application of X-ray photoelectron spectroscopy and energy dispersive spectroscopy. The changes in surface wettability were characterized by surface free energy determination. The heat treatment was also applied to selected samples to study the influence of the process on layer stability and formation of PDMS-Ag or PDMS-C-Ag composite layer. Plasmon resonance effect was determined for as-sputtered and heat-treated Ag on polydimethylsiloxane. The heating of such structures may induce formation of a pattern with a surface plasmon resonance effect, which may also significantly affect the antibacterial activity. We have implemented sputtering of the carbon base layer in combination with excimer laser exposure of PDMS/C/Ag to modify its properties. We have confirmed that deposition of primary carbon layer on PDMS, followed by sputtering of silver combined with subsequent heat treatment and activation of such surface with excimer laser, led to the formation of a surface with strong antibacterial properties against two bacterial strains of S. epidermidis and E. coli.
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Affiliation(s)
- Klaudia Hurtuková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
| | - Tereza Vašinová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
| | - Nikola Slepičková Kasálková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
| | - Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.R.); (V.S.P.)
| | - Vladimíra Svobodová Pavlíčková
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.R.); (V.S.P.)
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
| | - Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (K.H.); (T.V.); (N.S.K.); (D.F.); (V.Š.)
- Correspondence:
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10
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Falak S, Shin BK, Huh DS. Antibacterial Activity of Polyaniline Coated in the Patterned Film Depending on the Surface Morphology and Acidic Dopant. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1085. [PMID: 35407202 PMCID: PMC9000663 DOI: 10.3390/nano12071085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 12/13/2022]
Abstract
We have fabricated poly(ε-caprolactone) (PCL) films with flat and honeycomb-patterned (HCP) structures to coat polyaniline (PANI) on the film surface. In addition, the effect of chemical modification of PANI by sulfuric acid (H2SO4) was also studied for antibacterial activity. The flat and HCP PCL films were obtained by simple evaporation of the solvent and via the breath figure (BF) method, respectively. The morphology and chemical composition of PANI coated on the film surface were evaluated by scanning electron microscopy (SEM) and X-ray spectroscopy (EDX). Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analyses (TGA) were obtained to identify the PANI coating. The wettability and conductivity of the films were also measured. Applicational aspects were evaluated by assessing antibacterial and antibiofilm activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The EDX, TGA, and FT-IR findings indicated chemical modification of PCL film by PANI and H2SO4. The conductivity of the films was increased by the coating of PANI to the patterned surface and additionally increased by the chemically modified PANI. The antibacterial activity was 69.79%, 78.27%, and 88% against E. coli, and 32.73%, 62.65%, and 87.97% against S. aureus, for flat PANI, HCP PANI, and H2SO4-treated HCP films, respectively. Likewise, the PANI coated flat, HCP, and H2SO4-treated HCP films inhibited E. coli biofilm formation by around 41.62%, 63%, and 83.88% and S. aureus biofilm formation by 17.81%, 69.83%, and 96.57%, respectively. The antibacterial activity of the HCP film was higher than that of flat PANI films, probably due to the higher coating of PANI on the HCP surface. Moreover, sulfonation of the HCP film with H2SO4 might have improved the wettability, thereby enhancing the antibacterial and antibiofilm properties. Our results showed that topographical changes, as well as doping, offer simple and cost-effective ways to modify the structural and functional properties of films.
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Affiliation(s)
| | | | - Do Sung Huh
- Department of Chemistry, Nano Science and Engineering, Center of Nano Manufacturing, Inje University, Gimhae-si 50834, Korea; (S.F.); (B.K.S.)
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Hurtuková K, Juřicová V, Fajstavrová K, Fajstavr D, Slepičková Kasálková N, Rimpelová S, Švorčík V, Slepička P. Cytocompatibility of Polymethyl Methacrylate Honeycomb-like Pattern on Perfluorinated Polymer. Polymers (Basel) 2021; 13:polym13213663. [PMID: 34771220 PMCID: PMC8587905 DOI: 10.3390/polym13213663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, we present a simple approach for developing a biocompatible polymer scaffold with a honeycomb-like micropattern. We aimed to combine a plasma treatment of fluorinated ethylene propylene (FEP) substrate with an improved phase separation technique. The plasma exposure served for modification of the polymer surface properties, such as roughness, surface chemistry, and wettability. The treated FEP substrate was applied for the growth of a honeycomb-like pattern from a solution of polymethyl methacrylate (PMMA). The properties of the pattern were strongly dependent on the conditions of plasma exposure of the FEP substrate. The physico-chemical properties of the prepared pattern, such as changes in wettability, aging, morphology, and surface chemistry, were determined. Further, we have examined the cellular response of human osteoblasts (U-2 OS) on the modified substrates. The micropattern prepared with a selected combination of surface activation and amount of PMMA for honeycomb construction showed a positive effect on U-2 OS cell adhesion and proliferation. Samples with higher PMMA content (3 and 4 g) formed more periodic hexagonal structures on the surface compared to its lower amount (1 and 2 g), which led to a significant increase in the pattern cytocompatibility compared to pristine or plasma-treated FEP.
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Affiliation(s)
- Klaudia Hurtuková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Veronika Juřicová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Klára Fajstavrová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Nikola Slepičková Kasálková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic;
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
| | - Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague, Czech Republic; (K.H.); (V.J.); (K.F.); (D.F.); (N.S.K.); (V.Š.)
- Correspondence: ; Tel.: +420-220-445-162
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