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Effects of Modified Magnetite Nanoparticles on Bacterial Cells and Enzyme Reactions / L. S. Bondarenko, E. S. Kovel, K. A. Kydralieva [et al.] // Nanomaterials. - 2020. - Vol. 10, Is. 8. - Ст. 1499, DOI 10.3390/nano10081499. - Cited References:83. - This research was funded by the Russian Foundation for Basic Research (#19-315-50048, #19-33-90149, and #18-29-19003).
. - ISSN 2079-4991РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
NATURAL ORGANIC-MATTER
HUMIC-ACID
DETOXIFICATION PROCESSES
Кл.слова (ненормированные):
magnetite nanoparticles -- humic acids-coated magnetite nanoparticles -- silica-coated magnetite nanoparticles -- zeta potential -- hydrodynamic -- diameter -- toxicity -- bioluminescence -- bacterial assay -- enzymatic assay -- oxidative stress -- Photobacterium phosphoreum -- NADH -- FMN-oxidoreductase -- luciferase
Аннотация: Current paper presents biological effects of magnetite nanoparticles (MNPs). Relations of MNP' characteristics (zeta-potential and hydrodynamic diameters) with effects on bacteria and their enzymatic reactions were the main focus.Photobacterium phosphoreumand bacterial enzymatic reactions were chosen as bioassays. Three types of MNPs were under study: bare Fe3O4, Fe(3)O(4)modified with 3-aminopropyltriethoxysilane (Fe3O4/APTES), and humic acids (Fe3O4/HA). Effects of the MNPs were studied at a low concentration range (< 2 mg/L) and attributed to availability and oxidative activity of Fe3+, high negative surface charge, and low hydrodynamic diameter of Fe3O4/HA, as well as higher Fe(3+)content in suspensions of Fe3O4/HA. Low-concentration suspensions of bare Fe(3)O(4)provided inhibitory effects in both bacterial and enzymatic bioassays, whereas the MNPs with modified surface (Fe3O4/APTES and Fe3O4/HA) did not affect the enzymatic activity. Under oxidative stress (i.e., in the solutions of model oxidizer, 1,4-benzoquinone), MNPs did not reveal antioxidant activity, moreover, Fe3O4/HA demonstrated additional inhibitory activity. The study contributes to the deeper understanding of a role of humic substances and silica in biogeochemical cycling of iron. Bioluminescence assays, cellular and enzymatic, can serve as convenient tools to evaluate bioavailability of Fe(3+)in natural dispersions of iron-containing nanoparticles, e.g., magnetite, ferrihydrite, etc.
WOS
Держатели документа:
Natl Res Univ, Moscow Aviat Inst, Moscow 125993, Russia.
FRC KSC SB RAS, Inst Phys SB RAS, Krasnoyarsk 660036, Russia.
FRC KSC SB RAS, Inst Biophys SB RAS, Krasnoyarsk 660036, Russia.
RAS, Moscow Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia.
Univ Szeged, H-6720 Szeged, Hungary.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Bondarenko, Lyubov S.; Kovel, Ekaterina S.; Kydralieva, Kamila A.; Dzhardimalieva, Gulzhian, I; Illes, Erzsebet; Tombacz, Etelka; Kicheeva, Arina G.; Kudryasheva, Nadezhda S.; Dzhardimalieva, Gulzhian; Kudryasheva, Nadezhda; Kovel, Ekaterina; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-315-50048, 19-33-90149, 18-29-19003]
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