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A new composite material based on alumina nanofibers and detonation nanodiamonds: synthesis, characterization, and sensing application / N. O. Ronzhin, E. D. Posokhina, E. V. Mikhlina [et al.] // J. Nanopart. Res. - 2021. - Vol. 23, Is. 9. - Ст. 199, DOI 10.1007/s11051-021-05309-y. - Cited References:57. - This work is partially supported by the Russian Foundation for Basic Research, Project 18-29-19078 (E. V. Mikhlina, M. M. Simunin, I. Ryzhkov). . - ISSN 1388-0764. - ISSN 1572-896X

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials
Рубрики:
ELECTROCHEMICAL ENERGY-STORAGE
SELECTIVE DETECTION
PHENOL DETECTION
Кл.слова (ненормированные):
Nanodiamonds -- Alumina nanofibers -- Composite -- Indicator system -- Phenol
Аннотация: The development of inexpensive, easy-to-produce, and easy-to-use analytical tools for detection of harmful and toxic substances is a relevant research problem with direct applications in environmental monitoring and protection. In this work, we propose a novel composite material based on alumina nanofibers and detonation nanodiamonds for detection of phenol in aqueous medium. The composite material was obtained by mixing an aqueous suspension of alumina nanofibers with a diameter of 10-15 nm and a length of several microns and a hydrosol of nanodiamonds with an average cluster size of 70 nm. The mechanisms underlying the interaction of these nanomaterials are clarified and the physicochemical properties of the composite are investigated. The SEM and TEM studies show that the obtained composite has a network structure, in which clusters of nanodiamonds (10-20 nm in diameter) are distributed over the surface of nanofibers. Coupling of nanomaterials occurs due to opposite signs of their zeta potentials, which results in electrostatic attraction and subsequent chemical bonding as indicated by the X-ray photoelectron spectroscopy and simultaneous thermal analysis. The bonding apparently occurs between functional groups (mainly carboxyl) on the surface of nanodiamonds and amphoteric hydroxyl groups on the surface of alumina nanofibers. The proposed composite allows an easy-to-perform colorimetric analysis for qualitative and quantitative determination of phenol in aqueous samples with linear response over a wide range of concentrations (0.5-106 mu M). Multiple tests have shown that the composite is reusable and retains its catalytic function for at least 1 year during storage at room temperature.

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Держатели документа:
Inst Biophys SB RAS, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia.
Inst Computat Modelling SB RAS, Akademgorodok 50-44, Krasnoyarsk 660036, Russia.
Inst Chem & Chem Technol SB RAS, Akademgorodok 50-24, Krasnoyarsk 660036, Russia.
Fed Res Ctr KSC SB RAS, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Ronzhin, Nikita O.; Posokhina, Ekaterina D.; Mikhlina, Elena, V; Mikhlin, Yuri L.; Simunin, Mikhail M.; Tarasova, Lyudmila S.; Vorobyev, Sergey A.; Bondar, Vladimir S.; Ryzhkov, Ilya I.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-29-19078]

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Bacterial Cellulose (BC) and BC Composites: Production and Properties / TGG Volova, SVV Prudnikova, EGG Kiselev [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 2. - Ст. 192, DOI 10.3390/nano12020192. - Cited References:113. - This research was financially supported by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006. . - ISSN 2079-4991

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials
Рубрики:
SILVER NANOPARTICLES
GLUCONACETOBACTER-HANSENII
MICROBIAL CELLULOSE
Кл.слова (ненормированные):
bacterial cellulose -- composites -- production -- properties
Аннотация: The synthesis of bacterial cellulose (BC) by Komagataeibacter xylinus strain B-12068 was investigated on various C-substrates, under submerged conditions with stirring and in static surface cultures. We implemented the synthesis of BC on glycerol, glucose, beet molasses, sprat oil, and a mixture of glucose with sunflower oil. The most productive process was obtained during the production of inoculum in submerged culture and subsequent growth of large BC films (up to 0.2 m(2) and more) in a static surface culture. The highest productivity of the BC synthesis process was obtained with the growth of bacteria on molasses and glycerol, 1.20 and 1.45 g/L per day, respectively. We obtained BC composites with silver nanoparticles (BC/AgNPs) and antibacterial drugs (chlorhexidine, baneocin, cefotaxime, and doripenem), and investigated the structure, physicochemical, and mechanical properties of composites. The disc-diffusion method showed pronounced antibacterial activity of BC composites against E. coli ATCC 25922 and S. aureus ATCC 25923.

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Держатели документа:
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys SB, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, LV Kirensky Inst Phys SB, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Gas Engn, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Volova, Tatiana G. G.; Prudnikova, Svetlana V. V.; Kiselev, Evgeniy G. G.; Nemtsev, Ivan V. V.; Vasiliev, Alexander D. D.; Kuzmin, Andrey P. P.; Shishatskaya, Ekaterina I. I.; Kiselev, Evgeniy; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]

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Biodistribution of nanodiamonds in the body of mice using EPR spectrometry / E. Inzhevatkin [et al.] // IET Sci. Meas. Technol. - 2019. - Vol. 13, Is. 7. - P984-988, DOI 10.1049/iet-smt.2018.5594. - Cited References:32. - This work was supported by the Russian Foundation for Basic Research (project no. 16-04-00999). . - ISSN 1751-8822. - ISSN 1751-8830

РУБ Engineering, Electrical & Electronic
Рубрики:
DRUG-DELIVERY
   DETONATION NANODIAMONDS
   NANOMATERIALS
   DOXORUBICIN
Кл.слова (ненормированные):
blood -- biomedical materials -- kidney -- lung -- detonation -- diamond -- nanomedicine -- liver -- muscle -- cellular biophysics -- nanoparticles -- EPR -- imaging -- mice -- EPR spectrometry -- detonation NDs -- electron paramagnetic -- resonance spectrometry -- characteristic EPR signal -- initially injected -- NDs -- detonation -- femoral muscles -- blood -- spleen -- brain -- kidneys -- heart -- lungs -- liver -- biomaterials -- nanodiamonds -- organ homogenates -- nanoparticle concentrations -- inter-organ distribution -- time 2 -- 5 hour -- C
Аннотация: In vitro experiments proved the usefulness of electron paramagnetic resonance (EPR) spectrometry for detecting detonation nanodiamonds (NDs) in samples of biomaterials (blood and homogenates of organs of mice). A characteristic EPR signal (g = 2.003, Delta H similar or equal to 10 G) was detected in biomaterials containing NDs, and its intensity linearly increased at nanoparticle concentrations of between 1.6 and 200 mu g/ml. In vivo experiments demonstrated that EPR spectrometry was effective for monitoring the inter-organ distribution of NDs intravenously injected to mice. In 2.5 h after the injection of NDs, the nanoparticles mainly accumulated in the lungs and liver of the animals - about 25 and 20%, respectively, of the initially injected NDs. The amounts of NDs accumulated in the heart and kidneys were considerably lower. Also, EPR spectrometry did not detect NDs in the blood, spleen, brain, and femoral muscles of mice. Ten days after injection, EPR spectrometry detected redistribution of NDs in mice. The amounts of nanoparticles decreased approximately by a factor of 3.5 in the lungs and increased almost by a factor of 3 in the liver; NDs were detected in the spleen. This study suggests ways to use EPR spectrometry to study the distribution, accumulation, and elimination of detonation NDs injected into laboratory animals.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
RAS, SB, Int Sci Ctr Studies Extreme States Organism, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.

Доп.точки доступа:
Inzhevatkin, Evgeny; Baron, Alexey; Maksimov, Nikolai; Volkova, Marina; Puzyr, Alexey; Ronzhin, Nikita; Bondar, Vladimir; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [16-04-00999]

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Bioluminescent assay for toxicological assessment of nanomaterials / E. N. Esimbekova [et al.] // Dokl. Biochem. Biophys. - 2017. - Vol. 472, Is. 1. - P60-63, DOI 10.1134/S1607672917010173. - Cited References:15. - We are sincerely grateful to the staff of the Institute of Physiological Active Compounds (Kharkiv, Ukraine) for providing fullerene samples. This study was supported by the Russian Science Foundation (project no. 16-14-10115). . - ISSN 1607-6729. - ISSN 1608-3091

РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
LUMINOUS BACTERIA
TOXICITY
Аннотация: A new method for assessing biotoxicity of nanomaterials, based on the use of soluble bioluminescent coupled enzyme system NAD(P)ai...H:FMN oxidoreductase and luciferase, is proposed. The results of this study indicate a significant adverse biological effect exerted by nanoparticles at the molecular level. It was found that the most toxic nanoparticles the nanoparticles are based on copper and copper oxide, as well as single-walled carbon nanotubes and multi-walled carbon nanofibers, which are referred to hazard class II.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Krasnoyarsk State Agr Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Esimbekova, E. N.; Nemtseva, E. V.; Kirillova, M. A.; Asanova, A. A.; Kratasyuk, V. A.; Russian Science Foundation [16-14-10115]

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Bioluminescent enzyme inhibition-based assay to predict the potential toxicity of carbon nanomaterials / E. N. Esimbekova [et al.] // Toxicol. Vitro. - 2017. - Vol. 45. - P128-133, DOI 10.1016/j.tiv.2017.08.022. - Cited References:55. - This study was supported by the Russian Science Foundation (project no. 16-14-10115). . - ISSN 0887-2333

РУБ Toxicology
Рубрики:
IN-VIVO
   ENGINEERED NANOPARTICLES
   NANOTUBE TOXICITY
   C-60
   FULLERENE
Кл.слова (ненормированные):
Nanotoxicity -- Enzyme inhibition-based assay -- Bioluminescence -- Luciferase -- Nanomaterials -- Nanotubes
Аннотация: A bioluminescent enzyme inhibition-based assay was applied to predict the potential toxicity of carbon nanomaterials (CNM) presented by single- and multi-walled nanotubes (SWCNT and MWCNT) and aqueous solutions of hydrated fullerene C-60 (C(60)HyFn). This assay specifically detects the influence of substances on parameters of the soluble or immobilised coupled enzyme system of luminescent bacteria: NAD(P)H:FMN-oxidoreductase + luciferase (Red + Luc). A protocol based on the optical properties of CNM for correcting the results of the bioluminescent assay was also developed. It was shown that the inhibitory activity of CNM on Red + Luc decreased in the following order: MWCNT > SWCNT > C(60)HyFn. The soluble enzyme system Red + Luc had high sensitivity to MWCNT and SWCNT, with values of the inhibition parameter IC50 equal to 0.012 and 0.16 mg/L, respectively. The immobilised enzyme system was more vulnerable to C(60)HyFn than its soluble form, with an IC50 equal to 1.4 mg/L. Due to its technical simplicity, rapid response time and high sensitivity, this bioluminescent method has the potential to be developed as a general enzyme inhibition-based assay for a wide variety of nanomaterials.

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SB RAS, Fed Res Ctr, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Esimbekova, Elena N.; Nemtseva, Elena V.; Bezrukikh, Anna E.; Jukova, Galina V.; Lisitsa, Albert E.; Lonshakova-Mukina, Viktoriya I.; Rimatskaya, Nadezhda V.; Sutormin, Oleg S.; Kratasyuk, Valentina A.; Esimbekova, Elena; Nemtseva, Elena; Russian Science Foundation [16-14-10115]

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Detonation Nanodiamond-Assisted Carbon Nanotube Growth by Hot Filament Chemical Vapor Deposition / I. P. Kudarenko [et al.] // Phys. Status Solidi B-Basic Solid State Phys. - 2018. - Vol. 255, Is. 1. - Ст. 1700286, DOI 10.1002/pssb.201700286. - Cited References:28. - The work was supported by RSF project 17-72-10173. . - ISSN 0370-1972. - ISSN 1521-3951

РУБ Physics, Condensed Matter
Рубрики:
DIAMOND
   FILMS
   HFCVD
   FABRICATION
   GRAPHITE
   SCIENCE
   SIZE
   CVD
Кл.слова (ненормированные):
carbon nanotubes -- catalytic growth -- diamond -- hot filament chemical vapor -- deposition -- nanomaterials -- synthesis
Аннотация: Substrates pretreatment in suspensions of a detonation nanodiamond is widely used for nucleation of diamond growth by chemical vapor deposition (CVD). We found that iron inclusions in the nanodiamond provide catalytical growth of carbon nanotubes during CVD in a hot filament reactor (HF CVD). Carbon nanotubes grow in the area between two adjacent Si wafers. The diameters of such obtained nanotubes were in the range of 10-100 nm and the length of the tubes reaches about 10 mu m. The proposed HF CVD method has convincing potential for the fabrication of carbon nanotube coatings on a large surface area.

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Держатели документа:
Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia.
Univ Eastern Finland, Dept Phys & Math, Joensuu 80101, Finland.
RAS, Fed Sci Res Ctr Crystallog & Photon, AV Shubnikov Inst Crystallog, Moscow 119333, Russia.
Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kudarenko, Ilya P.; Malykhin, Sergei A.; Orekhov, Andrey S.; Puzyr, Aleksey P.; Kleshch, Victor I.; Ismagilov, Rinat R.; Obraztsov, Alexander N.; RSF [17-72-10173]

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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. - P1-20, DOI 10.3390/nano10081499 . - ISSN 2079-4991
Кл.слова (ненормированные):
Bacterial assay -- Bioluminescence -- Enzymatic assay -- Humic acids-coated magnetite nanoparticles -- Hydrodynamic diameter -- Luciferase -- Magnetite nanoparticles -- NADH:FMN-oxidoreductase -- Oxidative stress -- Photobacterium phosphoreum -- Silica-coated magnetite nanoparticles -- Toxicity -- Zeta potential
Аннотация: Current paper presents biological effects of magnetite nanoparticles (MNPs). Analyzing effects of MNP’ characteristics (zeta-potential and hydrodynamic diameters) on bacteria and their enzyme reactions was the main focus. Photobacterium phosphoreum and bacterial enzymatic reactions were chosen as bioassays. Three types of MNPs were under study: bare Fe3O4, Fe3O4 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 Fe3+ content in suspensions of Fe3O4/HA. Low-concentration suspensions of bare Fe3O4 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 Fe3+ in natural dispersions of iron-containing nanoparticles, e.g., magnetite, ferrihydrite, etc. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

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Держатели документа:
Moscow Aviation Institute (National Research University), Moscow, 125993, Russian Federation
Institute of Physics SB RAS, FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Biophysics SB RAS, FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Problems of Chemical Physics RAS, Moscow Region, Chernogolovka, 142432, Russian Federation
University of Szeged, Szeged, H-6720, Hungary
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Bondarenko, L. S.; Kovel, E. S.; Kydralieva, K. A.; Dzhardimalieva, G. I.; Illes, E.; Tombacz, E.; Kicheeva, A. G.; Kudryasheva, N. S.

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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 2079-4991

РУБ 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.

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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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EPR Spectrometric Estimation of the Distribution of Intravenously Injected Nanodiamonds in Mice / E. V. Inzhevatkin [et al.] // Biol. Bull. - 2019. - Vol. 46, Is. 3. - P277-283, DOI 10.1134/S1062359019020079. - Cited References:56. - This work was supported by the Russian Foundation for Basic Research, project no. 16-04-00999. . - ISSN 1062-3590. - ISSN 1608-3059

РУБ Biology
Рубрики:
DRUG-DELIVERY
   DETONATION NANODIAMONDS
   NANOMATERIALS
   PARTICLES
Аннотация: The distribution in mice of intravenously injected modified nanodiamonds (MNDs) obtained by detonation synthesis was studied using electron paramagnetic resonance (EPR) spectrometry. It has been shown that 2.5 h after MND injection into the tail vein of mice, the nanoparticles accumulate mainly in the lungs and liver of animals; much smaller amounts of nanoparticles were found in the kidneys and heart. The presence of MNDs in the samples of blood, spleen, brain, and thigh muscles of mice was not detected within the sensitivity of the method used.

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Держатели документа:
Russian Acad Sci, Int Sci Ctr Studies Extreme States Organism, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Akademgorodok 50, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Inst Biophys, Fed Res Ctr,Krasnoyarsk Sci Ctr, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Pr Svobodnyi 79, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Inzhevatkin, E. V.; Baron, A. V.; Maksimov, N. G.; Volkova, M. B.; Puzyr, A. P.; Bondar, V. S.; Russian Foundation for Basic Research [16-04-00999]

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10.

Extraction of Nanochitin from Marine Resources and Fabrication of Polymer Nanocomposites: Recent Advances / B. Joseph, R. M. Sam, P. Balakrishnan [et al.] // Polymers. - 2020. - Vol. 12, Is. 8. - Ст. 1664, DOI 10.3390/polym12081664. - Cited References:128. - This study was financially supported by project "Agro preparations of the new generation: a strategy of construction and realization" (agreement number 074-02-2018-328) in accordance with resolution number 220 of the Government of the Russian Federation of 9 April 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning." S.C.M.F. is the recipient of an E2S UPPA Research Partnership Chair (MANTA: Marine Materials) supported by the "Investissements d'Avenir" French program managed by ANR (ANR-16-IDEX-0002), the Region Nouvelle-Aquitaine and the Communaute d'Agglomeration du Pays Basque, France. . - ISSN 2073-4360

РУБ Polymer Science
Рубрики:
NATURAL-RUBBER NANOCOMPOSITES
ELECTROSPUN PVDF MEMBRANE
ALPHA-CHITIN
Кл.слова (ненормированные):
nanochitin -- biodegradable -- marine -- reinforcement -- polysaccharides
Аннотация: Industrial sea food residues, mainly crab and shrimp shells, are considered to be the most promising and abundant source of chitin. In-depth understanding of the biological properties of chitin and scientific advancements in the field of nanotechnology have enabled the development of high-performance chitin nanomaterials. Nanoscale chitin is of great economic value as an efficient functional and reinforcement material for a wide range of applications ranging from water purification to tissue engineering. The use of polymers and nanochitin to produce (bio) nanocomposites offers a good opportunity to prepare bioplastic materials with enhanced functional and structural properties. Most processes for nanochitin isolation rely on the use of chemical, physical or mechanical methods. Chitin-based nanocomposites are fabricated by various methods, involving electrospinning, freeze drying, etc. This review discusses the progress and new developments in the isolation and physico-chemical characterization of chitin; it also highlights the processing of nanochitin in various composite and functional materials.

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Держатели документа:
Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India.
Bishop Moore Coll, Res & Post Grad Dept Chem, Mavelikara 690110, Kerala, India.
Plant Lipids Pvt Ltd, Cochin 682311, Kerala, India.
Siberian Fed Univ, Russian Acad Sci, Inst Biophys, Krasnoyarsk 660041, Russia.
Univ Pau & Pays Adour, Inst Interdisciplinary Res Environm & Mat IPREM, IPREM, CNRS,E2S UPPA, F-64600 Anglet, France.
Mahatma Gandhi Univ, Sch Energy Mat, Kottayam 686560, Kerala, India.

Доп.точки доступа:
Joseph, Blessy; Sam, Rubie Mavelil; Balakrishnan, Preetha; Maria, Hanna J.; Gopi, Sreeraj; Volova, Tatiana; Fernandes, Susana C. M.; Thomas, Sabu; Government of the Russian Federation [074-02-2018-328, 220]; "Investissements d'Avenir" French programFrench National Research Agency (ANR) [ANR-16-IDEX-0002]; Region Nouvelle-AquitaineRegion Nouvelle-Aquitaine; Communaute d'Agglomeration du Pays Basque, France

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11.

Genetically encodable bioluminescent system from fungi / A. A. Kotlobay [et al.] // Proc. Natl. Acad. Sci. U. S. A. - 2018. - Vol. 115, Is. 50. - P12728-12732, DOI 10.1073/pnas.1803615115 . - ISSN 0027-8424
Кл.слова (ненормированные):
Bioluminescence -- Fungal luciferase -- Fungal luciferin biosynthesis
Аннотация: Bioluminescence is found across the entire tree of life, conferring a spectacular set of visually oriented functions from attracting mates to scaring off predators. Half a dozen different luciferins, molecules that emit light when enzymatically oxidized, are known. However, just one biochemical pathway for luciferin biosynthesis has been described in full, which is found only in bacteria. Here, we report identification of the fungal luciferase and three other key enzymes that together form the biosynthetic cycle of the fungal luciferin from caffeic acid, a simple and widespread metabolite. Introduction of the identified genes into the genome of the yeast Pichia pastoris along with caffeic acid biosynthesis genes resulted in a strain that is autoluminescent in standard media. We analyzed evolution of the enzymes of the luciferin biosynthesis cycle and found that fungal bioluminescence emerged through a series of events that included two independent gene duplications. The retention of the duplicated enzymes of the luciferin pathway in nonluminescent fungi shows that the gene duplication was followed by functional sequence divergence of enzymes of at least one gene in the biosynthetic pathway and suggests that the evolution of fungal bioluminescence proceeded through several closely related stepping stone nonluminescent biochemical reactions with adaptive roles. The availability of a complete eukaryotic luciferin biosynthesis pathway provides several applications in biomedicine and bioengineering. © 2018 National Academy of Sciences. All Rights Reserved.

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Держатели документа:
Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russian Federation
Planta LLC, Moscow, 121205, Russian Federation
Institute of Science and Technology Austria, Klosterneuburg, 3400, Austria
Medical Research Council London Institute of Medical Sciences, Imperial College London, London, W12 0NN, United Kingdom
Centre for Genomic Regulation, Barcelona Institute for Science and Technology, Barcelona, 08003, Spain
Universitat Pompeu Fabra, Barcelona, 08003, Spain
Evrogen JSC, Moscow, 117997, Russian Federation
Institute of Biophysics, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow, 142290, Russian Federation
Pirogov Russian National Research Medical University, Moscow, 117997, Russian Federation
Biomedical Nanomaterials, National Research Technological University (MISiS), Moscow, 119049, Russian Federation
Skolkovo Institute of Science and Technology, Moscow, 121205, Russian Federation
Departamento de Bioquimica, Instituto de Quimica, Universidade de Sao Paulo, Sao Paulo, 05508-000, Brazil
Departamento de Oceanografia Fisica, Quimica e Geologica, Instituto Oceanografico, Universidade de Sao Paulo, Sao Paulo, 05508-120, Brazil
Department of Environmental Biology, Chubu University, Kasugai, 487-8501, Japan
Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, 08010, Spain
Departamento de Quimica Fundamental, Instituto de Quimica, Universidade de Sao Paulo, Sao Paulo, 05508-000, Brazil

Доп.точки доступа:
Kotlobay, A. A.; Sarkisyan, K. S.; Mokrushina, Y. A.; Marcet-Houben, M.; Serebrovskaya, E. O.; Markina, N. M.; Somermeyer, L. G.; Gorokhovatsky, A. Y.; Vvedensky, A.; Purtov, K. V.; Petushkov, V. N.; Rodionova, N. S.; Chepurnyh, T. V.; Fakhranurova, L. I.; Guglya, E. B.; Ziganshin, R.; Tsarkova, A. S.; Kaskova, Z. M.; Shender, V.; Abakumov, M.; Abakumova, T. O.; Povolotskaya, I. S.; Eroshkin, F. M.; Zaraisky, A. G.; Mishin, A. S.; Dolgov, S. V.; Mitiouchkina, T. Y.; Kopantzev, E. P.; Waldenmaier, H. E.; Oliveira, A. G.; Oba, Y.; Barsova, E.; Bogdanova, E. A.; Gabaldon, T.; Stevani, C. V.; Lukyanov, S.; Smirnov, I. V.; Gitelson, J. I.; Kondrashov, F. A.; Yampolsky, I. V.

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12.

Grape seed extract-soluplus dispersion and its antioxidant activity / R. Rajakumari, T. Volova, O. S. Oluwafemi [et al.] // Drug Dev. Ind. Pharm. - 2020. - P1-11, DOI 10.1080/03639045.2020.1788059 . - Article in press. - ISSN 0363-9045
Кл.слова (ненормированные):
antioxidant -- dispersion -- freeze-drying -- Grape seed extract -- proanthocyanidins -- soluplus
Аннотация: Objective: The main objective of this work was to formulate a nanodispersion containing grape seed extract and analyzed its release profile, antioxidant potential of the prepared formulations. Methods: The grape seed extract (GSE) containing proanthocyanidins (PC’s) has been dispersed in polymer matrix soluplus (SOLU) by the freeze-drying method. The morphological analysis was carried out using atomic force microscopy (AFM), scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The in-vitro release of the nanodispersion formulations was evaluated by simulated intestinal fluid (SIF). The antioxidant activity of GSE and the formulation were evaluated by employing various in-vitro assays such as 2, 2’-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), 2, 2-diphenyl-1- picrylhydrazyl (DPPH), Ferric reducing antioxidant power (FRAP) and peroxidation inhibiting activity. Results: The formulation FIII (1:5) resulted in a stable formulation with a higher loading efficiency of 95.36%, a particle size of 69.90 nm, a polydispersity index of 0.154 and a zeta potential value of ?82.10 mV. The antioxidant efficiency of GSE-SOLU evaluated by DPPH was found to be 96.7%. The ABTS and FRAP model exhibited a dose-dependent scavenging activity. Linoleic model of FIII formulation and GSE exhibited a 66.14 and 86.58% inhibition respectively at 200 µg/l. Conclusions: The main reason for excellent scavenging activity of the formulations can be attributed to the presence of monomeric, dimeric, oligomeric procyanidins and the phenolic group. The present work denotes that GSE constitutes a good source of PC’s and will be useful in the prevention and treatment of free radical related diseases. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

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Держатели документа:
International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, India
Institute of Biophysics, Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg, South Africa
Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, India
School of Chemical Sciences, Mahatma Gandhi University, Kottayam, India
School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, India

Доп.точки доступа:
Rajakumari, R.; Volova, T.; Oluwafemi, O. S.; Rajesh Kumar, S.; Thomas, S.; Kalarikkal, N.

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13.

Metal-enhanced luminescence: Current trend and future perspectives- A review / R. Ranjan [et al.] // Anal. Chim. Acta. - 2017. - Vol. 971. - P1-13, DOI 10.1016/j.aca.2017.03.051. - Cited References:124. - The research was partially supported by the Russian Foundation for Basic Research [project No 16-34-60100], the state budget allocated to the fundamental research [project No 01201351504] and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project and Russian Foundation for Basic Research [project No 16-44-242126]. . - ISSN 0003-2670. - ISSN 1873-4324

РУБ Chemistry, Analytical
Рубрики:
RESONANCE ENERGY-TRANSFER
PLASMON-COUPLED EMISSION
Кл.слова (ненормированные):
Nanomaterials -- Surface plasmons -- Luminescence enhancement -- Biosensors
Аннотация: Optically enhanced biosensing strategies are prerequisites for developing miniature and highly sensitive multiplexed analytical platforms. Such smart biosensing systems are highly promising for use in the fields of biomedicine and environmental monitoring. Optical signal enhancement during bioassays is attributed to the complex opto-electronic interactions of incoming photonic signals at the nanomaterial interface. Research on the use of metals other than gold and silver for such purposes tends to extend the spectral window to observe luminescence enhancement effects. Such manifold increase in luminescence may be explained by the principles of plasmon coupling, directional emission led high collection efficiency, Rayleigh scattering and related opto-electronic events. The present review begins with a mechanistic description of important phenomena associated with metal-induced luminescence enhancement, particularly focusing on the origin of metal-enhanced luminescence. This review further analyses the hybrid nanostructure capabilities responsible for maintaining unique opto-electronic properties during bio-functionalisation. Current research trends in this area, future scope of this field for designing useful bioassays and concluding remarks are then discussed. (C) 2017 Elsevier B.V. All rights reserved.

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Держатели документа:
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Dept Biophys, Lab Bioluminescent Biotechnol, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia.
RAS, SB, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Ranjan, Rajeev; Esimbekova, Elena N.; Kirillova, Maria A.; Kratasyuk, Valentina A.; Russian Foundation for Basic Research [16-34-60100, 16-44-242126]; Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund; [01201351504]

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14.

Rapid biosensing tools for cancer biomarkers / R. Ranjan, E. N. Esimbekova, V. A. Kratasyuk // Biosens. Bioelectron. - 2017. - Vol. 87. - P918-930, DOI 10.1016/j.bios.2016.09.061 . - ISSN 0956-5663
Кл.слова (ненормированные):
Biosensor -- Cancer biomarker -- Functional nanomaterials -- Microfluidics -- Point-of-care devices -- Antibodies -- Biosensors -- Diseases -- Electronic properties -- Microfluidics -- Nanostructured materials -- Cancer biomarkers -- Diagnostic systems -- Fluorescent probes -- Functional Nano materials -- Latest development -- Optoelectronic properties -- Point of care -- Rapid bio-sensing -- Biomarkers
Аннотация: The present review critically discusses the latest developments in the field of smart diagnostic systems for cancer biomarkers. A wide coverage of recent biosensing approaches involving aptamers, enzymes, DNA probes, fluorescent probes, interacting proteins and antibodies in vicinity to transducers such as electrochemical, optical and piezoelectric is presented. Recent advanced developments in biosensing approaches for cancer biomarker owes much credit to functionalized nanomaterials due to their unique opto-electronic properties and enhanced surface to volume ratio. Biosensing methods for a plenty of cancer biomarkers has been summarized emphasizing the key principles involved. © 2016 Elsevier B.V.

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Держатели документа:
Laboratory of Bioluminescent Biotechnologies, Department of Biophysics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodny prospect, Krasnoyarsk, Russian Federation
Institute of Biophysics SB RAS, Akademgorodok 50/50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ranjan, R.; Esimbekova, E. N.; Kratasyuk, V. A.

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15.

Rapid biosensing tools for cancer biomarkers / R. Ranjan, E. N. Esimbekova, V. A. Kratasyuk // Biosens. Bioelectron. - 2017. - Vol. 87. - P918-930, DOI 10.1016/j.bios.2016.09.061. - Cited References:115. - The research was partially supported by the Russian Foundation for Basic Research (Project no. 16-34-60100 and No. 16-06-00439), the state budget allocated to the fundamental research Russian Academy of Sciences (Project no. 01201351504). . - ISSN 0956-5663. - ISSN 1873-4235

РУБ Biophysics + Biotechnology & Applied Microbiology + Chemistry, Analytical
Рубрики:
POINT-OF-CARE
   HIGHLY SENSITIVE DETECTION
   ACOUSTIC-WAVE BIOSENSOR
   DNA
Кл.слова (ненормированные):
Biosensor -- Cancer biomarker -- Functional nanomaterials -- Point-of-care -- devices -- Microfluidics
Аннотация: The present review critically discusses the latest developments in the field of smart diagnostic systems for cancer biomarkers. A wide coverage of recent biosensing approaches involving aptamers, enzymes, DNA probes, fluorescent probes, interacting proteins and antibodies in vicinity to transducers such as electrochemical, optical and piezoelectric is presented. Recent advanced developments in biosensing approaches for cancer biomarker owes much credit to functionalized nanomaterials due to their unique opto-electronic properties and enhanced surface to volume ratio. Biosensing methods for a plenty of cancer biomarkers has been summarized emphasizing the key principles involved.

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Держатели документа:
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Dept Biophys, Lab Bioluminescent Biotechnol, Krasnoyarsk 660041, Russia.
Inst Biophys SB RAS, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Ranjan, Rajeev; Esimbekova, Elena N.; Kratasyuk, Valentina A.; Russian Foundation for Basic Research [16-34-60100, 16-06-00439]; state budget allocated to the fundamental research Russian Academy of Sciences Project [01201351504]

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16.

Saturable absorption in detonation nanodiamond dispersions / V. Vanyukov [et al.] // J. Nanophoton. - 2017. - Vol. 11, Is. 3, DOI 10.1117/1.JNP.11.032506 . - ISSN 1934-2608
Кл.слова (ненормированные):
Modelocking -- Nanodiamonds -- Nanomaterials -- Nonlinear optics -- Saturable absorption -- Carbon -- Chains -- Dispersion (waves) -- Electromagnetic wave absorption -- Laser excitation -- Laser pulses -- Light -- Light absorption -- Locks (fasteners) -- Nanostructured materials -- Nonlinear optics -- Ultrafast lasers -- Ultrashort pulses -- Yarn -- Aqueous dispersions -- Detonation nanodiamond -- Light-induced -- Modelocking -- Nano-diamond particles -- Non-linear parameters -- Saturable absorption -- Z-scan experiment -- Nanodiamonds
Аннотация: We report on a saturable absorption in aqueous dispersions of nanodiamonds with femtosecond laser pulse excitation at a wavelength of 795 nm. The open aperture Z-scan experiments reveal that in a wide range of nanodiamond particle sizes and concentrations, a lightinduced increase of transmittance occurs. The transmittance increase originates from the saturation of light absorption and is associated with a light absorption at 1.5 eV by graphite and dimer chains (Pandey dimer chains). The obtained key nonlinear parameters of nanodiamond dispersions are compared with those of graphene and carbon nanotubes, which are widely used for the mode-locking. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Держатели документа:
Institute of Photonics, University of Eastern Finland, Joensuu, Finland
Hypermemo Ltd., Joensuu, Finland
Institute of Mechanics, Russian Academy of Sciences, Izhevsk, Russian Federation
Federal research center Krasnoyarsk science Center SB RAS, Siberian Branch of RAS, Institute of Biophysics, Krasnoyarsk, Russian Federation
Texas State University, San Marcos, TX, United States
CIC nanoGUNE Consolider, Donostia-San Sebastian, Spain
G Basque Foundation for Science, Ikerbasque, Bilbao, Spain

Доп.точки доступа:
Vanyukov, V.; Mikheev, G.; Mogileva, T.; Puzyr, A.; Bondar, V.; Lyashenko, D.; Chuvilin, A.

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