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Di Lodovico S, Petrini M, D'Amico E, Di Fermo P, Diban F, D'Arcangelo S, Piattelli A, Cellini L, Iezzi G, Di Giulio M, D'Ercole S. Complex magnetic fields represent an eco-sustainable technology to counteract the resistant Candida albicans growth without affecting the human gingival fibroblasts. Sci Rep 2023; 13:22067. [PMID: 38086849 PMCID: PMC10716184 DOI: 10.1038/s41598-023-49323-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/06/2023] [Indexed: 12/18/2023] Open
Abstract
Novel technologies such as complex magnetic fields-CMFs represent an eco-sustainable proposal to counteract the infection associated to resistant microorganisms. The aim of this study was to evaluate the effect of two CMF programs (STRESS, ANTIBACTERIAL) against clinical antifungal resistant C. albicans also evaluating their uneffectiveness on gingival fibroblasts (hGFs). The STRESS program was more efficacious on C. albicans biofilm with up to 64.37% ± 10.80 of biomass and up to 99.19% ± 0.06 CFU/ml reductions in respect to the control also inducing an alteration of lipidic structure of the membrane. The MTT assay showed no CMFs negative effects on the viability of hGFs with a major ROS production with the ANTIBACTERIAL program at 3 and 24 h. For the wound healing assay, STRESS program showed the best effect in terms of the rate migration at 24 h, showing statistical significance of p < 0.0001. The toluidine-blue staining observations showed the typical morphology of cells and the presence of elongated and spindle-shaped with cytoplasmic extensions and lamellipodia was observed by SEM. The ANTIBACTERIAL program statistically increased the production of collagen with respect to control and STRESS program (p < 0.0001). CMFs showed a relevant anti-virulence action against C. albicans, no cytotoxicity effects and a high hGFs migration rate. The results of this study suggest that CMFs could represent a novel eco-sustainable strategy to counteract the resistant yeast biofilm infections.
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Affiliation(s)
- Silvia Di Lodovico
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Morena Petrini
- Department of Medical Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Emira D'Amico
- Department of Medical Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Paola Di Fermo
- Department of Medical Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Firas Diban
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Sara D'Arcangelo
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Adriano Piattelli
- School of Dentistry, Saint Camillus International, University of Health and Medical Sciences, Via di Sant'Alessandro 8, 00131, Rome, Italy
- Facultad de Medicina, UCAM Universidad Catolica San Antonio de Murcia, 30107, Murcia, Spain
| | - Luigina Cellini
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Giovanna Iezzi
- Department of Medical Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Mara Di Giulio
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy
| | - Simonetta D'Ercole
- Department of Medical Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini, 31, 66100, Chieti, Italy.
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2
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Sztafrowski D, Muraszko J, Jasiura A, Bryk P, Urbanek AK, Krasowska A. The alternating 50 Hz magnetic field depending on the hydrophobicity of the strain affects the viability, filamentation and sensitivity to drugs of Candida albicans. PLoS One 2023; 18:e0291438. [PMID: 37796949 PMCID: PMC10553255 DOI: 10.1371/journal.pone.0291438] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/26/2023] [Indexed: 10/07/2023] Open
Abstract
In recent decades, Candida albicans have been the main etiological agent of life-threatening invasive infections, characterized by various mechanisms of resistance to commonly used antifungals. One of the strategies to fight Candida infections may be the use of an electromagnetic field. In this study, we examined the influence of the alternating magnetic field of 50 Hz on the cells of C. albicans. We checked the impact of the alternating magnetic field of 50 Hz on the viability, filamentation and sensitivity to fluconazole and amphotericin B of two, differing in hydrophobicity, strains of C. albicans, CAF2-1 and CAF 4-2. Our results indicate that using the alternating magnetic field of 50 Hz reduces the growth of C. albicans. Interestingly, it presents a stronger effect on the hydrophobic strain CAF4-2 than on the hydrophilic CAF2-1. The applied electromagnetic field also affects the permeabilization of the cell membrane. However, it does not inhibit the transformation from yeast to hyphal forms. AMF is more effective in combination with fluconazole rather than amphotericin B. Our findings confirm the hypothesis that the application of the alternating magnetic field of 50 Hz in antifungal therapy may arise as a new option to support the treatment of Candida infections.
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Affiliation(s)
- Dariusz Sztafrowski
- Faculty of Electrical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Jakub Muraszko
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Adam Jasiura
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Patrycja Bryk
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Aneta K. Urbanek
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Anna Krasowska
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
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3
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Electrotransformation optimization of plasmid pGAPZαA - CecMd3cs into Pichia pastoris GS115 with response surface methodology. ELECTRON J BIOTECHN 2022. [DOI: 10.1016/j.ejbt.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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4
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Zand E, Froehling A, Schoenher C, Zunabovic-Pichler M, Schlueter O, Jaeger H. Potential of Flow Cytometric Approaches for Rapid Microbial Detection and Characterization in the Food Industry-A Review. Foods 2021; 10:3112. [PMID: 34945663 PMCID: PMC8701031 DOI: 10.3390/foods10123112] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 12/11/2022] Open
Abstract
As microbial contamination is persistent within the food and bioindustries and foodborne infections are still a significant cause of death, the detection, monitoring, and characterization of pathogens and spoilage microorganisms are of great importance. However, the current methods do not meet all relevant criteria. They either show (i) inadequate sensitivity, rapidity, and effectiveness; (ii) a high workload and time requirement; or (iii) difficulties in differentiating between viable and non-viable cells. Flow cytometry (FCM) represents an approach to overcome such limitations. Thus, this comprehensive literature review focuses on the potential of FCM and fluorescence in situ hybridization (FISH) for food and bioindustry applications. First, the principles of FCM and FISH and basic staining methods are discussed, and critical areas for microbial contamination, including abiotic and biotic surfaces, water, and air, are characterized. State-of-the-art non-specific FCM and specific FISH approaches are described, and their limitations are highlighted. One such limitation is the use of toxic and mutagenic fluorochromes and probes. Alternative staining and hybridization approaches are presented, along with other strategies to overcome the current challenges. Further research needs are outlined in order to make FCM and FISH even more suitable monitoring and detection tools for food quality and safety and environmental and clinical approaches.
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Affiliation(s)
- Elena Zand
- Department of Food Science and Technology, Institute of Food Technology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria;
| | - Antje Froehling
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, 14469 Potsdam, Germany; (A.F.); (O.S.)
| | - Christoph Schoenher
- Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, 1190 Vienna, Austria; (C.S.); (M.Z.-P.)
| | - Marija Zunabovic-Pichler
- Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, 1190 Vienna, Austria; (C.S.); (M.Z.-P.)
| | - Oliver Schlueter
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, 14469 Potsdam, Germany; (A.F.); (O.S.)
| | - Henry Jaeger
- Department of Food Science and Technology, Institute of Food Technology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria;
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5
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Effects of Complex Electromagnetic Fields on Candida albicans Adhesion and Proliferation on Polyacrylic Resin. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11156786] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
(1) Background: The objectives of this study were to evaluate the effect of several sessions of the antibacterial protocol of complex electromagnetic fields (CMFs) on planktonic Candida albicans and fungal ability, after treatment with CMFs, to adhere and proliferate on acrylic resin materials. (2) Methods: Planktonic overnight cultures of Candida albicans were subjected to different entities of CMFs treatments. Four test groups were compared: “p1”: treated only with the first program of the antibacterial protocol; “p1–p5” subjected to the first five programs; “1 antibacterial” received one complete session of the protocol and “2 antibacterial” received two complete sessions. After the treatments, the number of colony forming units (CFUs) were recorded. Then, C. albicans broth cultures were cultivated on polyacrylic resin discs and evaluated for CFUs and subjected to scanning electron microscope (SEM) analysis. (3) Results: Microbiological analysis showed that CMFs promoted a significant reduction of C. albicans CFUs when the protocol “p1–p5” was applied. No statistically significant differences between test groups were observed if the time of exposure to CMFs was increased. SEM observations and CFUs showed that CMFs treatments have the ability to reduce C. albicans adherence and proliferation on discs. (4) Conclusions: The CMFs showed an antifungal effect as well as a decrease in C. albicans adhesion on polyacrylic resin.
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Riffo B, Henríquez C, Chávez R, Peña R, Sangorrín M, Gil-Duran C, Rodríguez A, Ganga MA. Nonionizing Electromagnetic Field: A Promising Alternative for Growing Control Yeast. J Fungi (Basel) 2021; 7:jof7040281. [PMID: 33918089 PMCID: PMC8070080 DOI: 10.3390/jof7040281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/03/2021] [Accepted: 04/04/2021] [Indexed: 11/16/2022] Open
Abstract
In the food industry, some fungi are considered to be common spoilage microorganisms which reduce the shelf life of products. To avoid this outcome, different technologies are being developed to control their growth. Electromagnetic fields (EMF) have been used to combat bacterial growth, but there are few studies on yeasts and their possible action mechanisms. For this reason, we studied the effect of EMF between 1 to 5.9 GHz bands on the growth of Saccharomyces cerevisiae yeast and observed that all the frequencies of the band used cause the reduction of the viability of this yeast. In addition, we observed that the distance between the antenna and the sample is an important factor to consider to control the growing yeast. By using transmission electron microscopy, we found that the EMF caused a loss of continuity of the yeast cell membrane. Therefore, EMF may be used as a control method for yeast growth.
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Affiliation(s)
- Byron Riffo
- Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (B.R.); (C.H.); (R.P.)
| | - Consuelo Henríquez
- Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (B.R.); (C.H.); (R.P.)
| | - Renato Chávez
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (R.C.); (C.G.-D.)
| | - Rubén Peña
- Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (B.R.); (C.H.); (R.P.)
| | - Marcela Sangorrín
- Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas PROBIEN, Universidad Nacional del Comahue, Consejo Nacional de Investigaciones Científicas y Tecnológicas, Buenos Aires 1400, Argentina;
| | - Carlos Gil-Duran
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (R.C.); (C.G.-D.)
| | - Arturo Rodríguez
- Departamento de Tecnologías Industriales, Facultad Tecnológica, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile
- Correspondence: (A.R.); (M.A.G.)
| | - María Angélica Ganga
- Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Alameda 3363, Santiago 9170022, Chile; (B.R.); (C.H.); (R.P.)
- Correspondence: (A.R.); (M.A.G.)
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Li Q, Tian M, Teng J, Gao P, Tang BQ, Wu H. Radio frequency-induced superoxide accumulation affected the growth and viability of Saccharomyces cerevisiae. Int Microbiol 2020; 23:391-396. [PMID: 31898034 DOI: 10.1007/s10123-019-00111-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 11/24/2019] [Accepted: 11/29/2019] [Indexed: 12/26/2022]
Abstract
With the development of the electric technologies, the biological effects of electromagnetic fields (EMF) were widely studied. However, the results remain controversial and the biophysical mechanisms are still unknown. To our knowledge, little studies pay attention to the radio frequency (RF) of 2.6-5 MHz. In the present study, we investigated the effect of these radio frequencies on the growth and cell viability of Saccharomyces cerevisiae at very low power density below 0.1 mT. The result appeared to be time-dependent. The growth of the yeast cells was obviously affected by the RF-EMF with a 43.5% increase when exposed for 30 h, and the growth-promoting effect decreased along with the radiation time and eventually turned to an inhibiting effect retarding growth by 20.7% at 89 h. The cell viability was improved to 70.1% at 8 h and reduced by 33.5% at 28 h. The superoxide accumulated in exposed cells as radiation time increased which may lead to the inhibition of viability and growth of the cells. However, the efficient frequency, power density, and exposure dosage await further investigation. Nevertheless, the wave band studied in this research is effective to produce biological effect, and therefore, it may provide an optional new radio frequency which is valuable for the development and utilization in therapy technique and medical use.
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Affiliation(s)
- Qing Li
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China
| | - Miao Tian
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China
| | - Jie Teng
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China
| | - Peng Gao
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China
| | - Bruce Qing Tang
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China
| | - Hong Wu
- Institute of Life Science & Technology, ENN Group, South District of ENN Industrial Park, Langfang, 065001, Hebei, China.
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8
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Iontophoresis enhances voriconazole antifungal potency and corneal penetration. Int J Pharm 2019; 576:118991. [PMID: 31884059 DOI: 10.1016/j.ijpharm.2019.118991] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/05/2019] [Accepted: 12/22/2019] [Indexed: 12/17/2022]
Abstract
Strategies to enhance corneal penetration of voriconazole (VOR) could improve the treatment of fungal keratitis. Here, we evaluated the use of iontophoresis for ocular VOR delivery from either: (i) a cyclodextrin inclusion complex (CD VOR), (ii) a liposome (LP VOR), and (iii) a chitosan-coated liposome (LP VOR CS). LP VOR CS presented mean diameter of 139.2 ± 1.3 nm and zeta potential equal to + 3.3 ± 1.5 mV compared to 134.6 ± 1.7 and -8.2 ± 3.0 mV of LP VOR, which, together with mucin mucoadhesion study, confirmed chitosan-coating. Both drug and liposomal formulations were stable under the influence of an applied electric current. Interestingly, in vitro studies in Candida glabrata culture indicated a decrease in VOR MIC values following iontophoresis (from 0.28 to 0.14 µg/mL). Iontophoresis enhanced drug penetration into the cornea. After 10 min of a 2 mA/cm2 applied current, corneal retained amounts were 45.4 ± 11.2, 30.4 ± 2.1 and 30.6 ± 2.9 µg/cm2 for, respectively, CD VOR, LP VOR, and LP VOR CS. In conclusion, iontophoresis increases drug potency and enhances drug penetration into the cornea, showing potential to be used as "an emergency burst delivery approach".
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Novickij V, Zinkevičienė A, Perminaitė E, Čėsna R, Lastauskienė E, Paškevičius A, Švedienė J, Markovskaja S, Novickij J, Girkontaitė I. Non-invasive nanosecond electroporation for biocontrol of surface infections: an in vivo study. Sci Rep 2018; 8:14516. [PMID: 30266920 PMCID: PMC6162327 DOI: 10.1038/s41598-018-32783-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 09/14/2018] [Indexed: 12/20/2022] Open
Abstract
Invasive infections caused by drug-resistant bacteria are frequently responsible for fatal sepsis, morbidity and mortality rates. In this work, we propose a new methodology based on nanosecond high frequency electric field bursts, which enables successful eradication of bacteria in vivo. High frequency (15 kHz) 15–25 kV/cm 300–900 ns pulsing bursts were used separately and in combination with acetic acid (0.1–1%) to treat Pseudomonas aeruginosa in a murine model. Acetic acid 1% alone was effective resulting in almost 10-fold reduction of bacteria viability, however combination of nanosecond electric field and acetic acid 1% treatment was the most successful showing almost full eradication (0.01% survival compared to control) of the bacteria in the contaminated area. The short duration of the pulses (sub-microsecond) and high frequency (kHz range) of the burst enabled reduction of the muscle contractions to barely detectable level while the proposed applicators ensured predominantly topical treatment, without electroporation of deeper tissues. The results of our study have direct application for treatment of wounds and ulcers when chemical treatment is no longer effective.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania.
| | - Auksė Zinkevičienė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Vilnius, Lithuania
| | - Emilija Perminaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Vilnius, Lithuania
| | - Robertas Čėsna
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Vilnius, Lithuania
| | - Eglė Lastauskienė
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius, Lithuania
| | | | - Jurgita Švedienė
- Laboratory of Biodeterioration Research, Nature Research Centre, Vilnius, Lithuania
| | | | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Irutė Girkontaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Vilnius, Lithuania
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Lv QZ, Qin YL, Yan L, Wang L, Zhang C, Jiang YY. NSG2 ( ORF19.273) Encoding Protein Controls Sensitivity of Candida albicans to Azoles through Regulating the Synthesis of C14-Methylated Sterols. Front Microbiol 2018. [PMID: 29515531 PMCID: PMC5826172 DOI: 10.3389/fmicb.2018.00218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Antifungal azole drugs inhibit the synthesis of ergosterol and cause the accumulation of sterols containing a 14α-methyl group, which is related to the properties of cell membrane. Due to the frequent recurrence of fungal infections and clinical long-term prophylaxis, azole resistance is increasing rapidly. In our research, Nsg2p, encoded by the ORF19.273 in Candida albicans, is found to be involved in the inhibition of 14α-methylated sterols and resistance to azoles. Under the action of fluconazole, nsg2Δ/Δ mutants are seriously damaged in the integrity and functions of cell membranes with a decrease of ergosterol ratio and an increase of both obtusifoliol and 14α-methylfecosterol ratio. The balance between ergosterol and 14α-methyl sterols mediated by NSG2 plays an important role in C. albicans responding to azoles in vitro as well as in vivo. These phenotypes are completely different from those of Nsg2p in Saccharomyces cerevisiae, which is proved to increase the stability of HMG-CoA and resistance to lovastatin. Based on the evidence above, it is indicated that the decrease of 14α-methylated sterols is an azole-resistant mechanism in C. albicans, which may provide new strategies for overcoming the problems of azole resistance.
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Affiliation(s)
- Quan-Zhen Lv
- Center for New Drug Research, College of Pharmacy, Second Military Medical University, Shanghai, China
| | - Yu-Lin Qin
- Center for New Drug Research, College of Pharmacy, Second Military Medical University, Shanghai, China
| | - Lan Yan
- Center for New Drug Research, College of Pharmacy, Second Military Medical University, Shanghai, China
| | - Liang Wang
- Center for New Drug Research, College of Pharmacy, Second Military Medical University, Shanghai, China
| | - Chuyue Zhang
- Shanghai Pinghe Bilingual School, Shanghai, China
| | - Yuan-Ying Jiang
- Center for New Drug Research, College of Pharmacy, Second Military Medical University, Shanghai, China
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11
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Novickij V, Stanevičienė R, Vepštaitė-Monstavičė I, Gruškienė R, Krivorotova T, Sereikaitė J, Novickij J, Servienė E. Overcoming Antimicrobial Resistance in Bacteria Using Bioactive Magnetic Nanoparticles and Pulsed Electromagnetic Fields. Front Microbiol 2018; 8:2678. [PMID: 29375537 PMCID: PMC5767227 DOI: 10.3389/fmicb.2017.02678] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 12/22/2017] [Indexed: 11/21/2022] Open
Abstract
Nisin is a known bacteriocin, which exhibits a wide spectrum of antimicrobial activity, while commonly being inefficient against Gram-negative bacteria. In this work, we present a proof of concept of novel antimicrobial methodology using targeted magnetic nisin-loaded nano-carriers [iron oxide nanoparticles (NPs) (11-13 nm) capped with citric, ascorbic, and gallic acids], which are activated by high pulsed electric and electromagnetic fields allowing to overcome the nisin-resistance of bacteria. As a cell model the Gram-positive bacteria Bacillus subtilis and Gram-negative Escherichia coli were used. We have applied 10 and 30 kV cm-1 electric field pulses (100 μs × 8) separately and in combination with two pulsed magnetic field protocols: (1) high dB/dt 3.3 T × 50 and (2) 10 mT, 100 kHz, 2 min protocol to induce additional permeabilization and local magnetic hyperthermia. We have shown that the high dB/dt pulsed magnetic fields increase the antimicrobial efficiency of nisin NPs similar to electroporation or magnetic hyperthermia methods and a synergistic treatment is also possible. The results of our work are promising for the development of new methods for treatment of the drug-resistant foodborne pathogens to minimize the risks of invasive infections.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Ramunė Stanevičienė
- Laboratory of Genetics, Institute of Botany, Nature Research Centre, Vilnius, Lithuania
| | | | - Rūta Gruškienė
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | | | - Jolanta Sereikaitė
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Elena Servienė
- Laboratory of Genetics, Institute of Botany, Nature Research Centre, Vilnius, Lithuania
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
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12
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Novickij V, Švedienė J, Paškevičius A, Markovskaja S, Girkontaitė I, Zinkevičienė A, Lastauskienė E, Novickij J. Pulsed electric field-assisted sensitization of multidrug-resistant Candida albicans to antifungal drugs. Future Microbiol 2017; 13:535-546. [PMID: 29227694 DOI: 10.2217/fmb-2017-0245] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM Determine the influence of pH on the inactivation efficiency of Candida albicans in pulsed electric fields (PEF) and evaluate the possibilities for sensitization of a drug-resistant strain to antifungal drugs. MATERIALS & METHODS The effects of PEF (2.5-25 kVcm-1) with fluconazole, terbinafine and naftifine were analyzed at a pH range of 3.0-9.0. Membrane permeabilization was determined by flow cytometry and propidium iodide. RESULTS PEF induced higher inactivation of C. albicans at low pH and increased sensitivity to terbinafine and naftifine to which the strain was initially resistant. Up to 5 log reduction in cell survival was achieved. CONCLUSION A proof of concept that electroporation can be used to sensitize drug-resistant microorganisms was presented, which is promising for treating biofilm-associated infections.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko St 41, 03227 Vilnius, Lithuania
| | - Jurgita Švedienė
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos St 2, 08412 Vilnius, Lithuania
| | - Algimantas Paškevičius
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos St 2, 08412 Vilnius, Lithuania.,Laboratory of Microbiology of the Centre of Laboratory Medicine, Vilnius University Hospital Santariškių Clinics, Santariškių St 2, 08661 Vilnius, Lithuania
| | - Svetlana Markovskaja
- Laboratory of Mycology, Nature Research Centre, Žaliųjų ežerų St 49, 08406 Vilnius, Lithuania
| | - Irutė Girkontaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių St 5, 08406 Vilnius, Lithuania
| | - Auksė Zinkevičienė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių St 5, 08406 Vilnius, Lithuania
| | - Eglė Lastauskienė
- Department of Microbiology & Biotechnology, Vilnius University, Sauletekio al. 7, 10257 Vilnius, Lithuania
| | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko St 41, 03227 Vilnius, Lithuania
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