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Molina Hernandez JB, Scotti L, Valbonetti L, Gioia L, Paparella A, Paludi D, Aceto A, Ciriolo MR, Chaves Lopez C. Effect of membrane depolarization against Aspergillus niger GM31 resistant by ultra nanoclusters characterized by Ag 2+ and Ag 3+ oxidation state. Sci Rep 2023; 13:2716. [PMID: 36792916 PMCID: PMC9932144 DOI: 10.1038/s41598-023-29918-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
To date, the impossibility of treating resistant forms of bacteria and fungi (AMR) with traditional drugs is a cause for global alarm. We have made the green synthesis of Argirium silver ultra nanoclusters (Argirium-SUNCs) very effective against resistant bacteria (< 1 ppm) and mature biofilm (0.6 ppm). In vitro and preclinical tests indicate that SUNCs are approximately 10 times less toxic in human cells than bacteria. Unique chemical-physical characteristics such as particle size < 2 nm, a core composed of Ag0, and a shell of Ag +, Ag2+ , Ag3+ never observed before in stable form in ultra pure water, explain their remarkable redox properties Otto Cars (Lancet Glob. Health 9:6, 2021). Here we show that Argirium-SUNCs have strong antimicrobial properties also against resistant Aspergillus niger GM31 mycelia and spore inactivation (0.6 ppm). The membrane depolarization is a primary target leading to cell death as already observed in bacteria. Being effective against both bacteria and fungi Argirium-SUNCs represent a completely different tool for the treatment of infectious diseases.
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Affiliation(s)
- Junior Bernardo Molina Hernandez
- grid.17083.3d0000 0001 2202 794XFaculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Luca Scotti
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.
| | - Luca Valbonetti
- grid.17083.3d0000 0001 2202 794XFaculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Luisa Gioia
- grid.17083.3d0000 0001 2202 794XFaculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Antonello Paparella
- grid.17083.3d0000 0001 2202 794XFaculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Domenico Paludi
- grid.17083.3d0000 0001 2202 794XFaculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Antonio Aceto
- grid.412451.70000 0001 2181 4941Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, Chieti, Italy
| | - Maria Rosa Ciriolo
- grid.6530.00000 0001 2300 0941Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Clemencia Chaves Lopez
- grid.17083.3d0000 0001 2202 794XFaculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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Shelud’ko AV, Tugarova AV, Il’chukova AV, Varshalomidze OE, Antonyuk LP, El’-Registan GI, Katsy EI. Negative effect of alkylresorcinols on motility of rhizobacteria Azospirillum brasilense. Microbiology (Reading) 2013. [DOI: 10.1134/s0026261713040103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Al-toxicity studies in yeast using gallium as an aluminum analogue. Biometals 2007; 21:379-93. [DOI: 10.1007/s10534-007-9127-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2007] [Accepted: 11/22/2007] [Indexed: 10/22/2022]
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Wood CC, Porée F, Dreyer I, Koehler GJ, Udvardi MK. Mechanisms of ammonium transport, accumulation, and retention in ooyctes and yeast cells expressing Arabidopsis AtAMT1;1. FEBS Lett 2006; 580:3931-6. [PMID: 16806203 DOI: 10.1016/j.febslet.2006.06.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2006] [Accepted: 06/06/2006] [Indexed: 11/24/2022]
Abstract
Ammonium is a primary source of N for plants, so knowing how it is transported, stored, and assimilated in plant cells is important for rational approaches to optimise N-use in agriculture. Electrophysiological studies of Arabidopsis AtAMT1;1 expressed in oocytes revealed passive, Deltapsi-driven transport of NH(4)(+) through this protein. Expression of AtAMT1;1 in a novel yeast mutant defective in endogenous ammonium transport and vacuolar acidification supported the above mechanism for AtAMT1;1 and revealed a central role for acid vacuoles in storage and retention of ammonia in cells. These results highlight the mechanistic differences between plant AMT proteins and related transporters in bacteria and animal cells, and suggest novel strategies to enhance nitrogen use efficiency in agriculture.
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Affiliation(s)
- Craig C Wood
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Golm, Germany
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Kita-Tsukamoto K, Wada M, Yao K, Nishino T, Kogure K. Flagellar motors of marine bacteriaHalomonasare driven by both protons and sodium ions. Can J Microbiol 2004; 50:369-74. [PMID: 15213745 DOI: 10.1139/w04-021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bacterial cells in aquatic environments are able to reach or stay near nutrient patches by using motility. Motility is usually attained by rotating flagellar motors that are energized by electrochemical potential of H+or Na+. In this paper, the ion specificity for flagellar rotation of two marine isolates Halomonas spp. strains US172 and US201 was investigated. Both isolates require sodium for growth and possess a respiratory-driven primary sodium pump. They are motile because of lateral flagella regardless of the presence of sodium ions. Their swimming speed under various concentrations of sodium ions with and without carbonylcyanide m-chlorophenylhydrazone, a proton conductor, and with and without phenamil, a specific inhibitor for the sodium-driven flagellar motors, was examined. The effect of carbonylcyanide m-chlorophenylhydrazone on the transmembrane proton gradient was also determined. Our results showed that the flagellar motors of the Halomonas strains were energized by both H+and Na+in one cell. The bimodal nature of Halomonas spp. motility with respect to the driving energy source may reflect ecophysiological versatility to adapt to a wide range of salt conditions of the marine environment.Key words: marine bacteria, Halomonas, flagellar motor, sodium, proton.
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