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Pirușcă IA, Balaure PC, Grumezescu V, Irimiciuc SA, Oprea OC, Bîrcă AC, Vasile B, Holban AM, Voinea IC, Stan MS, Trușcă R, Grumezescu AM, Croitoru GA. New Fe 3O 4-Based Coatings with Enhanced Anti-Biofilm Activity for Medical Devices. Antibiotics (Basel) 2024; 13:631. [PMID: 39061313 PMCID: PMC11273941 DOI: 10.3390/antibiotics13070631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 07/02/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024] Open
Abstract
With the increasing use of invasive, interventional, indwelling, and implanted medical devices, healthcare-associated infections caused by pathogenic biofilms have become a major cause of morbidity and mortality. Herein, we present the fabrication, characterization, and in vitro evaluation of biocompatibility and anti-biofilm properties of new coatings based on Fe3O4 nanoparticles (NPs) loaded with usnic acid (UA) and ceftriaxone (CEF). Sodium lauryl sulfate (SLS) was employed as a stabilizer and modulator of the polarity, dispersibility, shape, and anti-biofilm properties of the magnetite nanoparticles. The resulting Fe3O4 functionalized NPs, namely Fe3O4@SLS, Fe3O4@SLS/UA, and Fe3O4@SLS/CEF, respectively, were prepared by co-precipitation method and fully characterized by XRD, TEM, SAED, SEM, FTIR, and TGA. They were further used to produce nanostructured coatings by matrix-assisted pulsed laser evaporation (MAPLE) technique. The biocompatibility of the coatings was assessed by measuring the cell viability, lactate dehydrogenase release, and nitric oxide level in the culture medium and by evaluating the actin cytoskeleton morphology of murine pre-osteoblasts. All prepared nanostructured coatings exhibited good biocompatibility. Biofilm growth inhibition ability was tested at 24 h and 48 h against Staphylococcus aureus and Pseudomonas aeruginosa as representative models for Gram-positive and Gram-negative bacteria. The coatings demonstrated good biocompatibility, promoting osteoblast adhesion, migration, and growth without significant impact on cell viability or morphology, highlighting their potential for developing safe and effective antibacterial surfaces.
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Affiliation(s)
- Ioana Adelina Pirușcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (I.A.P.); (A.C.B.); (B.V.); (R.T.)
| | - Paul Cătălin Balaure
- Department of Organic Chemistry, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania
| | - Valentina Grumezescu
- Lasers Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (V.G.)
| | - Stefan-Andrei Irimiciuc
- Lasers Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (V.G.)
| | - Ovidiu-Cristian Oprea
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania;
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (I.A.P.); (A.C.B.); (B.V.); (R.T.)
| | - Bogdan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (I.A.P.); (A.C.B.); (B.V.); (R.T.)
| | - Alina Maria Holban
- Microbiology and Immunology Department, Faculty of Biology, University of Bucharest, 77206 Bucharest, Romania;
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050663 Bucharest, Romania; (I.C.V.); (M.S.S.)
| | - Ionela C. Voinea
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050663 Bucharest, Romania; (I.C.V.); (M.S.S.)
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Miruna S. Stan
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050663 Bucharest, Romania; (I.C.V.); (M.S.S.)
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Roxana Trușcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (I.A.P.); (A.C.B.); (B.V.); (R.T.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (I.A.P.); (A.C.B.); (B.V.); (R.T.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050663 Bucharest, Romania; (I.C.V.); (M.S.S.)
| | - George-Alexandru Croitoru
- Department II, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
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Sau S, Kundu S. Fabrication of highly stretchable salt and solvent blended PEDOT:PSS/PVA free-standing films: non-linear to linear electrical conduction response. RSC Adv 2024; 14:5193-5206. [PMID: 38332796 PMCID: PMC10851924 DOI: 10.1039/d3ra08260a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/02/2024] [Indexed: 02/10/2024] Open
Abstract
Nowadays, ductile and conducting polymeric materials are highly utilizable in the realm of stretchable organic electronics. Here, mechanically ductile and electrically conducting free-standing films are fabricated by blending different solvents such as dimethyl sulfoxide (DMSO), diethylene glycol (DEG) and N,N-dimethylformamide (DMF), and salts such as silver nitrate (AgNO3), zinc chloride (ZnCl2), copper chloride (CuCl2) and indium chloride (InCl3) with the homogeneous solution of poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) and poly(vinyl alcohol) (PVA) through solution casting method. The presence of salt modifies the PEDOT conformation from benzoid to quinoid, and induces the evolution of different morphologies. ZnCl2 or AgNO3 blended films have lower surface roughness and good miscibility with polymers, while CuCl2 or InCl3 blended films have relatively higher surface roughness as well as irregularly distributed surface morphology. Some crystalline domains are also formed due to the salt agglomeration. The presence of salt inside PEDOT:PSS/PVA/solvent system changes the current-voltage response from non-linear to linear. Among all the films, zinc salt blended PEDOT:PSS/PVA/DMSO, PEDOT:PSS/PVA/DEG and PEDOT:PSS/PVA/DMF films have higher conductivity, and zinc salt blended PEDOT:PSS/PVA/DEG film shows the highest conductivity of 0.041 ± 0.0014 S cm-1, while silver salt blended PEDOT:PSS/PVA/DMSO, PEDOT:PSS/PVA/DEG and PEDOT:PSS/PVA/DMF films have higher elongation at break, and silver salt blended PEDOT:PSS/PVA/DMSO film shows the highest elongation at break of 670 ± 31%. Both the charge carriers, i.e., electrons and ions, contribute to the electrical conduction, and the presence of hydrogen bonds and ionic interactions among PEDOT+, PSS-, PVA, residual solvent, salt cations and anions modifies the film behaviours. Among all the films, ZnCl2 blended PEDOT:PSS/PVA/DMSO film offers relatively superior behaviours having higher conductivity (0.025 ± 0.0013 S cm-1) and elongation at break (517 ± 15%), and therefore can have potential applications in the fields of wearable devices, bioelectronics, etc.
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Affiliation(s)
- Sanjib Sau
- Soft Nano Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology Vigyan Path, Paschim Boragaon, Garchuk Guwahati Assam 781035 India
| | - Sarathi Kundu
- Soft Nano Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology Vigyan Path, Paschim Boragaon, Garchuk Guwahati Assam 781035 India
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Monteiro GP, de Melo RT, Guidotti-Takeuchi M, Dumont CF, Ribeiro RAC, Guerra W, Ramos LMS, Paixão DA, dos Santos FAL, Rodrigues DDP, Boleij P, Hoepers PG, Rossi DA. A Ternary Copper (II) Complex with 4-Fluorophenoxyacetic Acid Hydrazide in Combination with Antibiotics Exhibits Positive Synergistic Effect against Salmonella Typhimurium. Antibiotics (Basel) 2022; 11:388. [PMID: 35326852 PMCID: PMC8944508 DOI: 10.3390/antibiotics11030388] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/05/2022] [Accepted: 03/09/2022] [Indexed: 02/01/2023] Open
Abstract
Salmonella spp. continues to figure prominently in world epidemiological registries as one of the leading causes of bacterial foodborne disease. We characterised 43 Brazilian lineages of Salmonella Typhimurium (ST) strains, characterized drug resistance patterns, tested copper (II) complex as control options, and proposed effective antimicrobial measures. The minimum inhibitory concentration was evaluated for seven antimicrobials, isolated and combined with the copper (II) complex [Cu(4-FH)(phen)(ClO4)2] (4-FH = 4-fluorophenoxyacetic acid hydrazide and phen = 1,10-phenanthroline), known as DRI-12, in planktonic and sessile ST. In parallel, 42 resistance genes were screened (PCR/microarray). All strains were multidrug resistant (MDR). Resistance to carbapenems and polymyxins (86 and 88%, respectively) have drawn attention to the emergence of the problem in Brazil, and resistance is observed also to CIP and CFT (42 and 67%, respectively), the drugs of choice in treatment. Resistance to beta-lactams was associated with the genes blaTEM/blaCTX-M in 39% of the strains. Lower concentrations of DRI-12 (62.7 mg/L, or 100 μM) controlled planktonic and sessile ST in relation to AMP/SUL/TET and AMP/SUL/TET/COL, respectively. The synergistic effect provided by DRI-12 was significant for COL/CFT and COL/AMP in planktonic and sessile ST, respectively, and represents promising alternatives for the control of MDR ST.
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Affiliation(s)
- Guilherme Paz Monteiro
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | - Roberta Torres de Melo
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | - Micaela Guidotti-Takeuchi
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | - Carolyne Ferreira Dumont
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | - Rosanne Aparecida Capanema Ribeiro
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | - Wendell Guerra
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (W.G.); (L.M.S.R.); (D.A.P.)
| | - Luana Munique Sousa Ramos
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (W.G.); (L.M.S.R.); (D.A.P.)
| | - Drielly Aparecida Paixão
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (W.G.); (L.M.S.R.); (D.A.P.)
| | - Fernanda Aparecida Longato dos Santos
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
| | | | - Peter Boleij
- Check-Points B.V., 6709 PD Wageningen, The Netherlands;
| | - Patrícia Giovana Hoepers
- Postgraduate Program in Veterinary Science, Federal University of Uberlândia, Uberlândia 38402-018, Brazil;
| | - Daise Aparecida Rossi
- Laboratory of Molecular Epidemiology, Federal University of Uberlândia, Uberlândia 38402-018, Brazil; (G.P.M.); (M.G.-T.); (C.F.D.); (R.A.C.R.); (F.A.L.d.S.); (D.A.R.)
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Fabrication of Ceftriaxone-Loaded Cellulose Acetate and Polyvinyl Alcohol Nanofibers and Their Antibacterial Evaluation. Antibiotics (Basel) 2022; 11:antibiotics11030352. [PMID: 35326815 PMCID: PMC8944567 DOI: 10.3390/antibiotics11030352] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/24/2022] [Accepted: 03/04/2022] [Indexed: 02/06/2023] Open
Abstract
Nanotechnology provides solutions by combining the fields of textiles and medicine to prevent infectious microbial spread. Our study aimed to evaluate the antimicrobial activity of nanofiber sheets incorporated with a well-known antibiotic, ceftriaxone. It is a third-generation antibiotic that belongs to the cephalosporin group. Different percentages (0, 5%, 10%, 15%, and 20%; based on polymer wt%) of ceftriaxone were incorporated with a polymer such as polyvinyl alcohol (PVA) via electrospinning to fabricate nanofiber sheets. The Kirby-Bauer method was used to evaluate the antimicrobial susceptibility of the nanofiber sheets using Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). For the characterization of the nanofiber sheets incorporated with the drug, several techniques were used, such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Our results showed that the nanofiber sheets containing ceftriaxone had potential inhibitory activity against E. coli and S. aureus as they had inhibition zones of approximately 20–25 mm on Mueller-Hinton-agar-containing plates. In conclusion, our nanofiber sheets fabricated with ceftriaxone have potential inhibitory effects against bacteria and can be used as a dressing to treat wounds in hospitals and for other biomedical applications.
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