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The influence of N and S poles of static magnetic field (SMF) on Candida albicans hyphal formation and antifungal activity of amphotericin B. Folia Microbiol (Praha) 2019; 64:727-734. [PMID: 30788802 PMCID: PMC6861703 DOI: 10.1007/s12223-019-00686-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/23/2019] [Indexed: 12/27/2022]
Abstract
Due to the increasing number of Candida albicans’ infections and the resistance of this pathogenic fungus to drugs, new therapeutic strategies are sought. One of such strategies may be the use of static magnetic field (SMF). C. albicans cultures were subjected to static magnetic field of the induction 0.5 T in the presence of fluconazole and amphotericin B. We identified a reduction of C. albicans hyphal length. Also, a statistically significant additional effect on the viability of C. albicans was revealed when SMF was combined with the antimycotic drug amphotericin B. The synergistic effect of this antimycotic and SMF may be due to the fact that amphotericin B binds to ergosterol in plasma membrane and SMF similarly to MF could influence domain orientation in plasma membrane (PM).
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3
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Sun L, Li X, Ma H, He R, Donkor PO. Global gene expression changes reflecting pleiotropic effects of Irpex lacteus
induced by low-intensity electromagnetic field. Bioelectromagnetics 2019; 40:104-117. [DOI: 10.1002/bem.22171] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 01/14/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Ling Sun
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang Jiangsu China
| | - Xinyi Li
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang Jiangsu China
| | - Haile Ma
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang Jiangsu China
| | - Ronghai He
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang Jiangsu China
| | - Prince O. Donkor
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang Jiangsu China
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5
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Picceri GG, Leonardi P, Iotti M, Gallo M, Baldi F, Zambonelli A, Amicucci A, Vallorani L, Piccoli G, Ciccimarra G, Arshakyan M, Burattini S, Falcieri E, Chiarantini L. Bacteria-produced ferric exopolysaccharide nanoparticles as iron delivery system for truffles (Tuber borchii). Appl Microbiol Biotechnol 2017; 102:1429-1441. [PMID: 29189902 DOI: 10.1007/s00253-017-8615-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/19/2017] [Accepted: 10/23/2017] [Indexed: 12/29/2022]
Abstract
Iron exopolysaccharide nanoparticles were biogenerated during ferric citrate fermentation by Klebsiella oxytoca DSM 29614. Before investigating their effects on Tuber borchii ("bianchetto" truffle) mycelium growth and morphology, they were tested on human K562 cell line and Lentinula edodes pure culture and shown to be non-toxic. Using these nanoparticles as iron supplement, the truffles showed extremely efficient iron uptake of over 300 times that of a commercial product. This avoided morphological changes in T. borchii due to lack of iron during growth and, with optimum nanoparticle dosage, increased growth without cell wall disruption or alteration of protoplasmatic hyphal content, the nuclei, mitochondria, and rough endoplasmic reticula being preserved. No significant modifications in gene expression were observed. These advantages derive from the completely different mechanism of iron delivery to mycelia compared to commercial iron supplements. The present data, in fact, show the nanoparticles attached to the cell wall, then penetrating it non-destructively without damage to cell membrane, mitochondria, chromatin, or ribosome. Low dosage significantly improved mycelium growth, without affecting hyphal morphology. Increases in hyphal diameter and septal distance indicated a healthier state of the mycelia compared to those grown in the absence of iron or with a commercial iron supplement. These positive effects were confirmed by measuring fungal biomass as mycelium dry weight, total protein, and ergosterol content. This "green" method for biogenerating iron exopolysaccharide nanoparticles offers many advantages, including significant economic savings, without toxic effects on the ectomycorrhizal fungus, opening the possibility of using them as iron supplements in truffle plantations.
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Affiliation(s)
- Giada Giusi Picceri
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Pamela Leonardi
- Department of Agricultural Sciences, University of Bologna, viale Fanin 46, 40127, Bologna, Italy
| | - Mirco Iotti
- Department of Life, Health and Environmental Sciences, University of L'Aquila, via Vetoio (Coppito), 1, 67100, L'Aquila, Italy
| | - Michele Gallo
- Department of Molecular Sciences and Nanosystems, Cà Foscari University, via Torino 155, 30172 Mestre, Venice, Italy
| | - Franco Baldi
- Department of Molecular Sciences and Nanosystems, Cà Foscari University, via Torino 155, 30172 Mestre, Venice, Italy
| | - Alessandra Zambonelli
- Department of Agricultural Sciences, University of Bologna, viale Fanin 46, 40127, Bologna, Italy
| | - Antonella Amicucci
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Luciana Vallorani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Giovanni Piccoli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Giovanni Ciccimarra
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Marselina Arshakyan
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Sabrina Burattini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Elisabetta Falcieri
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy
| | - Laura Chiarantini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via Saffi 2, 61029, Urbino, Italy.
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8
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Calcabrini C, Mancini U, De Bellis R, Diaz AR, Martinelli M, Cucchiarini L, Sestili P, Stocchi V, Potenza L. Effect of extremely low-frequency electromagnetic fields on antioxidant activity in the human keratinocyte cell line NCTC 2544. Biotechnol Appl Biochem 2016; 64:415-422. [PMID: 27001710 DOI: 10.1002/bab.1495] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 03/15/2016] [Indexed: 11/09/2022]
Abstract
Some epidemiological studies have suggested possible associations between exposure to extremely low-frequency electromagnetic fields (ELF-EMFs) and various diseases. Recently, ELF-EMF has been considered as a therapeutic agent. To support ELF-EMF use in regenerative medicine, in particular in the treatment of skin injuries, we investigated whether significant cell damage occurs after ELF-EMF exposure. Reactive oxygen species (ROS) production was evaluated in the human keratinocyte exposed for 1 H to 50 Hz ELF-EMF in a range of field strengths from 0.25 to 2 G. Significant ROS increases resulted at 0.5 and 1 G and under these flux densities ROS production, glutathione content, antioxidant defense activity, and lipid peroxidation markers were assessed for different lengths of time. Analyzed parameters of antioxidant defense and membrane integrity showed a different trend at two selected magnetic fluxes, with a greater sensitivity of the cells exposed to 0.5 G, especially after 1 H. All significant alterations observed in the first 4 H of exposure reverted to controls 24 H after suggesting that under these conditions, ELF-EMF induces a slight oxidative stress that does not overwhelm the metabolic capacity of the cells or have a cytotoxic effect.
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Affiliation(s)
- Cinzia Calcabrini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Umberto Mancini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Roberta De Bellis
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Anna Rita Diaz
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Maddalena Martinelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Luigi Cucchiarini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Piero Sestili
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Vilberto Stocchi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Lucia Potenza
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
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9
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Zhang J, Xu C, Wan Y, Gao M. Effects of extremely low frequency magnetic field on production of mannatide byα-hemolytic Streptococcus. Bioelectromagnetics 2016; 37:331-7. [DOI: 10.1002/bem.21984] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 05/12/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Jialan Zhang
- College of Animal Science; Yangtze University; Jingzhou Hubei China
| | - Cui Xu
- College of Life Science; Yangtze University; Jingzhou Hubei China
| | - Yunlei Wan
- College of Life Science; Yangtze University; Jingzhou Hubei China
| | - Mengxiang Gao
- College of Life Science; Yangtze University; Jingzhou Hubei China
- Jingchu Food Research and Development Center; Yangtze University; Jingzhou Hubei China
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