Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=bacteria<.>)

Общее количество найденных документов : 19
Показаны документы с 1 по 10

1-10 11-19

The NMR investigation of the electromagnetic irradiation effects on bacteria [Текст] / T. V. Drokina, V. V. Lisin, L. U. Popova [и др.] // Phys. Met. Metallogr. - Vol. 102, Suppl. 1. - S96-S97DOI 10.1134/S0031918X06140250. - Библиогр.: 4
Аннотация: The luminous marine bacteria (Photobacterium leiognathi, strain 54) are influenced by a nonthermal-intensity millimeter electromagnetic field, which was studied by nuclear magnetic resonance (NMR). It is shown that the proton spectrum of luminous bacteria depends on the electromagnetic irradiation effect (ν=42.2 GHz).

Читать в сети ИФ,
Смотреть статью

Доп.точки доступа:
Drokina, T. V.; Дрокина, Тамара Васильевна; Lisin, V.V.; Popova, L.U.; Balandina, A. N.; Bitekhtina, M.A.
}
Найти похожие

Synthesis, Properties, and in vivo Testing of Biogenic Ferrihydrite Nanoparticles / S. V. Stolyar, V. P. Ladygina, A. V. Boldyreva [et al.] // Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 11. - P. 1366-1369, DOI 10.3103/S106287382011026X. - Cited References: 12. - The study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 19-42-240012 r_a “Magnetic Resonance in Ferrihydrite Nanoparticles: Effects Associated with the Core–Shell Structure”), and the grant of the President of the Russian Federation for state support of young Russian scientists—Candidates of sciences no. MK-1263.2020.3 . - ISSN 1062-8738
Кл.слова (ненормированные):
Bacteria -- Nanoparticles -- Sols -- Ferrihydrites -- Functional activities -- In-vivo -- Klebsiella oxytoca -- Laboratory animals -- Morphological description
Аннотация: A sol containing biogenic ferrihydrite nanoparticles is obtained by cultivating Klebsiella oxytoca microorganisms. Data on the physical properties of the biogenic ferrihydrite and its effect on the organism of laboratory animals are obtained using a model of experimental hemolytic anemia, according to indicators of the functional activity of erythrocytes and morphological descriptions of organs.

Смотреть статью,
Scopus,
Читать в сети ИФ

Публикация на русском языке Синтез, свойства и тестирование биогенных наночастиц ферригидрита in vivo [Текст] / С. В. Столяр, В. П. Ладыгина, А. В. Болдырева [и др.] // Изв. РАН. Сер. физич. - 2020. - Т. 84 № 11. - С. 1601-1604

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Astrakhan State University, Astrakhan, 414056, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, 00964, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Ladygina, V. P.; Boldyreva, A. V.; Kolenchukova, O. A.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bairmani, M. S.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
Найти похожие

    Shabanova, O. V.
    Development of SEM method for analysis of organ-containing objects using inverse opals / O. V. Shabanova, I. V. Nemtsev, A. V. Shabanov // Sib. J. Sci. Technol. - 2020. - Vol. 21, Is. 4. - P. 565-573 ; Сибирский журнал науки и технологий, DOI 10.31772/2587-6066-2020-21-4-565-573. - Cited References: 25 . - ISSN 2587-6066
   Перевод заглавия: Разработка электронно-микроскопического метода анализа органсодержащих объектов с использованием инверсных опалов
Кл.слова (ненормированные):
scanning electron microscopy -- mesoporous structure -- inverse opal -- lactic acid bacteria -- erythrocyte -- сканирующая электронная микроскопия -- мезопористая структура -- инверсный опал -- молочнокислая бактерия -- эритроцит
Аннотация: The purpose of this study is to test the possibility of using inorganic macroporous structures of inverse opal in sample preparation for scanning electron microscopy of biological objects. As an absorbent substrate we used silica inverse opals prepared by a sol-gel method to study the biological objects.The process of manufacturing the inverse opal involves a complex multi-stage technological process. First, we synthesized submicron spherical particles from polymethylmethacrylate by the method of emulsifier-free emulsion polymerization of methylmethacrylate in an aqueous medium in the presence of a diazoinitiator. This method can be used to obtain an ensemble of particles with high monodispersity, the average size of which can vary in the range from 100 to 500 nm. Then, by self-assembly technique, we deposited the beads of polymethylmethacrylate into ordered matrices (templates), mainly with a face-centered cubic lattice. The resulting mesoporous structures, called artificial opals or colloidal crystals, had lateral dimensions of about 10 × 10 × 2 mm. Then we heat-treated the opals to 120 °C to harden the template before being impregnated with the precursor. Further, we impregnated the opals with silica sol with a particle size distribution from 1 to 5 nm, obtained by hydrolysis of tetraethoxysilane in the presence of hydrochloric acid, and then, after curing and drying the impregnating composition in air at room temperature, we multi-stage fired them up to 550 °C at normal pressure in the air atmosphere to remove all organic components. As a result, the macroporous metamaterial (the so-called inverse opals) with an open system of pores up to 400 nm in size, occupying about 80 % of the volume, were obtained. We studied lactic acid bacteria of cucumber brine and human red blood cells with TM4000 Plus, SU3500 and S-5500 scanning electron microscopes. Auxiliary substance for the sample preparation was ionic liquid VetexQ EM (Interlab LLC). We showed that it is possible to use the inverse opal as an absorbent substrate for sample preparation and rapid analysis in scanning electron microscopy without pre-drying, chemical treatment, or temperature exposure. To improve imaging in the electron microscope, we used sputter coater to cover the inverse opal surface with a thin film of platinum. The use of ionic liquid in combination with the absorbent porous medium allows preserving an original shape of the biological structures. Using the human red blood cells and lactic acid bacteria, we showed that it is possible to carry out of the morphological analysis of the cells using various scanning electron microscopes. We found that on the basis of the inverse opal, there is a fundamental possibility of creating the absorbent substrate suitable for repeated use in the study of the biological objects. At the same time, trace remnants of previous samples remaining after annealing the plate do not introduce significant distortions when conducting new series of observations. In this study, we obtained high-quality electronic micrographs of the biological objects with high resolution and contrast. At the same time, due to the use of the inverse opals as the absorbent substrate, time and financial costs for researchare reduced.
Целью данного исследования является апробация возможности применения неорганических макропористых структур инверсного опала при пробоподготовке для сканирующей электронной микроскопии биообъектов. Изготовленные золь-гель способом инверсные опалы на основе кремнезёма применялись в качестве впитывающей подложки для изучения биологических образцов. Изготовление инверсного опала представляет собой сложный многоступенчатый технологический процесс. Сначала методом безэмульгаторной эмульсионной полимеризации метилметакрилата в водной среде в присутствии диазоинициатора были синтезированы субмикронные сферические частицы из полиметилметакрилата. Таким способом можно получать ансамбль частиц с высокой монодисперсностью, средний размер которых может варьироваться в диапазоне от 100 до 500 нм. Затем методом самосборки субмикросферы полиметилметакрилата осаждались в упорядоченные матрицы (шаблоны) преимущественно с гранецентрированной кубической решёткой. Полученные мезопористые структуры, называемые искусственными опалами или коллоидными кристаллами, имели размеры порядка 10 ×10 × 2 мм. Затем опалы подвергались термической обработке до 120 °С для упрочнения шаблона перед пропиткой прекурсором. Далее опалы пропитывались золем кремнезёма с размером частиц от 1 до 5 нм, полученным путём гидролиза тетраэтоксисилана в присутствии соляной кислоты и затем, после отверждения и сушки пропитывающего состава на воздухе при комнатной температуре, подвергались многоступенчатому обжигу до 550 °С при нормальном давлении в воздушной атмосфере для удаления всех органических компонентов. В результате получались образцы макропористых метаматериалов (так называемые, инверсные или инвертированные опалы) с открытой системой пор размером до 400 нм, занимающих около 80 % объёма. В сканирующих электронных микроскопах TM4000 Plus, SU3500 и S-5500 с использованием макропористых структур были исследованы молочнокислые бактерии и красные кровяные тельца. Для улучшения визуализации использовались системы напыления металлов для покрытия поверхности инверсного опала тонкой плёнкой платины. Вспомогательным веществом в пробоподготовке выступала ионная жидкость VetexQ EM (Interlab LLC). Показано, что инверсный опал можно использовать как впитывающую подложку для пробоподготовки и экспресс-анализа в сканирующей электронной микроскопии без предварительной сушки, химической обработки или температурного воздействия биообъектов. Использование ионной жидкости в сочетании с впитывающей пористой средой позволяет сохранить первоначальную форму биологических структур. Показана возможность изучения морфологических особенностей биоструктур на примере эритроцитов человека и молочнокислых бактерий. Экспериментально установлено, что впитывающую подложку на основе инверсного опала можно использовать многократно при исследовании биологических объектов. Следовые остатки предыдущих проб, оставшиеся после отжига пластины, не вносят существенных искажений при проведении новых серий наблюдений. В нашем исследовании были получены высококачественные электронные микрофотографии биообъектов с высоким разрешением и контрастом. При этом за счёт использования инверсных опалов в качестве впитывающей подложки обеспечивается сокращение временных и финансовых затрат на исследования.

Смотреть статью,
РИНЦ
Держатели документа:
Special Designing and Technological Bureau “Nauka” KSC SB RAS, 50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, 50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
L.V. Kirensky Institute of Physics SB RAS, 50, building 38, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Nemtsev, I. V.; Немцев, Иван Васильевич; Shabanov, A. V.; Шабанов, Александр Васильевич

}
Найти похожие

    On mechanism of antioxidant effect of fullerenols / A. S. Sachkova [et al.] // Biochem. Biophys. Rep. - 2017. - Vol. 9. - P. 1-8, DOI 10.1016/j.bbrep.2016.10.011. - Cited References: 69. - The work was supported by the Russian Foundation for Basic Research, Grants No 15-03-06786 and 15–43-04377-sibir; the state budget allocated to the fundamental research at the Russian Academy of Sciences (project No 01201351504). Adaptation of the bioluminescent enzymatic technique to assess the antioxidant activity of bioactive compounds (humates and fullerenols) was partially supported by the Russian Science Foundation, Grant N 16-06-14-10115. . - ISSN 2405-5808
   Перевод заглавия: О механизме антиоксидантного эффекта фуллеренолов
Кл.слова (ненормированные):
Antioxidant activity -- Bacterial enzymes -- Fullerenol -- Hormesis -- Luminous marine bacteria -- Ultralow concentrations
Аннотация: Fullerenols are nanosized water-soluble polyhydroxylated derivatives of fullerenes, specific allotropic form of carbon, bioactive compounds and perspective pharmaceutical agents. Antioxidant activity of fullerenols was studied in model solutions of organic and inorganic toxicants of oxidative type – 1,4-benzoquinone and potassium ferricyanide. Two fullerenol preparations were tested: С60О2–4(ОН)20–24 and mixture of two types of fullerenols С60О2–4(ОН)20–24+С70О2–4(ОН)20–24. Bacteria-based and enzyme-based bioluminescent assays were used to evaluate a decrease in cellular and biochemical toxicities, respectively. Additionally, the enzyme-based assay was used for the direct monitoring of efficiency of the oxidative enzymatic processes. The bacteria-based and enzyme-based assays showed similar peculiarities of the detoxification processes: (1) ultralow concentrations of fullerenols were active (ca 10–17–10−4 and 10–17–10−5 g/L, respectively), (2) no monotonic dependence of detoxification efficiency on fullerenol concentrations was observed, and (3) detoxification of organic oxidizer solutions was more effective than that of the inorganic oxidizer. The antioxidant effect of highly diluted fullerenol solutions on bacterial cells was attributed to hormesis phenomenon; the detoxification was concerned with stimulation of adaptive cellular response under low-dose exposures. Sequence analysis of 16S ribosomal RNA was carried out; it did not reveal mutations in bacterial DNA. The suggestion was made that hydrophobic membrane-dependent processes are involved to the detoxifying mechanism. Catalytic activity of fullerenol (10−8 g/L) in NADH-dependent enzymatic reactions was demonstrated and supposed to contribute to adaptive bacterial response.

Смотреть статью,
Scopus,
Читать в сети ИФ
Держатели документа:
National Research Tomsk Polytechnic University, Tomsk, Russian Federation
Institute of Biophysics SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Physics SB RAS, Krasnoyarsk, Russian Federation
SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine SB RAS, Novosibirsk, Russian Federation

Доп.точки доступа:
Sachkova, A. S.; Kovel, E. S.; Churilov, G. N.; Чурилов, Григорий Николаевич; Guseynov, O. A.; Bondar, A. A.; Dubinina, I. A.; Дубинина, Ирина Александровна; Kudryasheva, N. S.
}
Найти похожие

Magnetic properties of biomineral particles produced by bacteria Klebsiella oxytoca / Y. L. Raikher [et al.] // Phys. Solid State. - 2010. - Vol. 52, Is. 2. - P. 298-305, DOI 10.1134/S1063783410020125. - Cited References: 29. - This study was supported by the Russian Foundation for Basic Research (project nos. 07-02-96026, 07- 02-96017, and 08-02-00802) and performed within the framework of the Federal Target Program "Research and Research-Pedagogical Personnel of Innovation Russia for 2009-2013." . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
FERRITIN
   NANOPARTICLES
   IRON
   SUSCEPTIBILITY
   FERRIHYDRITE
   BEHAVIOR
   FINS
Аннотация: Ferrihydrite nanoparticles (2-5 nm in size) produced by bacteria Klebsiella oxytoca in the course of biomineralization of iron salt solutions from a natural medium exhibit unique magnetic properties: they are characterized by both the antiferromagnetic order inherent in a bulk ferrihydrite and the spontaneous magnetic moment due to the decompensation of spins in sublattices of a nanoparticle. The magnetic susceptibility enhanced by the superantiferromagnetism effect and the magnetic moment independent of the magnetic field provide the possibility of magnetically controlling these natural objects. This has opened up the possibilities for their use in nanomedicine and bioengineering. The results obtained from measurements of the magnetic properties of the ferrihydrite produced by Klebsiella oxytoca in its two main crystalline modifications are reported, and the data obtained are analyzed theoretically. This has made it possible to determine numerical values of the magnetic parameters of real biomineral nanoparticles.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Raikher, Yu. L.
Stepanov, V. I.] Russian Acad Sci, Ural Div, Inst Continuum Media Mech, Perm 614013, Russia
[Stolyar, S. V.
Balaev, D. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Stolyar, S. V.
Balaev, D. A.
Ishchenko, L. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Ladygina, V. P.] Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Int Sci Ctr Res Organism Extreme Condit, Krasnoyarsk 660036, Russia
[Balasoiu, M.] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
ИФ СО РАН
Institute of Continuum Media Mechanics, Ural Division, Russian Academy of Sciences, ul. Akademika Koroleva 1, Perm 614013, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobody 79, Krasnoyarsk 660041, Russian Federation
International Scientific Center for Research of Organism under Extreme Conditions, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Joint Institute for Nuclear Research, ul. Joliot-Curie 6, Dubna, Moscow oblast 141980, Russian Federation

Доп.точки доступа:
Raikher, Y. L.; Stepanov, V. I.; Stolyar, S. V.; Столяр, Сергей Викторович; Ladygina, V. P.; Balaev, D. A.; Балаев, Дмитрий Александрович; Ishchenko, L. A.; Balasoiu, M.
}
Найти похожие

Hierarchical structure investigations of biogenic ferrihydrite samples / M. Balasoiu [et al.] // Rom. J. Phys. - 2010. - Vol. 55, Is. 7-8. - P. 782-789. - Cited References: 21. - The work was accomplished with the financial support of Grant 224/11.04.2008 of Romanian Governmental Plenipotentiary at JINR. . - ISSN 1221-146X

РУБ Physics, Multidisciplinary
Рубрики:
ELECTRON NANODIFFRACTION
   6-LINE FERRIHYDRITE
   SYNTHETIC 2-LINE
   FERROFLUIDS
Кл.слова (ненормированные):
ferrihydrite nanoparticles -- Klebsiella oxytoca bacteria -- optical microscopy -- SEM -- SAXS
Аннотация: Results of observation and preliminary analysis on morphology and structure of ferrihydrite particles produced in vivo by Klebsiella oxytoca bacteria are presented. In particular, optical microscopy, scanning electron microscopy and small angle X-ray scattering in accordance with one another point out the fractal structure of the biomineral particle surface. The effect of the bacteria age (the duration of growth) on the fractal dimension is established and characterized.

WOS,
Читать в сети ИФ
Держатели документа:
[Balasoiu, M.] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[Stolyar, S. V.
Iskhakov, R. S.
Ishchenko, L. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Raikher, Yu. L.] RAS, Ural Branch, Inst Continuum Media Mech, Perm 614013, Russia
[Balasoiu, M.
Kuklin, A. I.
Orelovich, O. L.
Kovalev, Yu. S.
Arzumanian, G. M.] Joint Inst Nucl Res, Dubna 141980, Russia
[Kurkin, T. S.] RAS, Inst Synthet Polymer Mat, Moscow 117393, Russia
[Stolyar, S. V.
Iskhakov, R. S.] RAS, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Balasoiu, M.; Stolyar, S. V.; Столяр, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Ishchenko, L. A.; Raikher, Y. L.; Kuklin, A. I.; Orelovich, O. L.; Kovalev, Y. S.; Kurkin, T. S.; Arzumanian, G. M.
}
Найти похожие

Gorban, A.
Codon usage trajectories and 7-cluster structure of 143 complete bacterial genornic sequences / A. . Gorban, T. . Popova, A. . Zinovyev // Physica A. - 2005. - Vol. 353. - P. 365-387, DOI 10.1016/j.physa.2005.01.043. - Cited References: 46 . - ISSN 0378-4371

РУБ Physics, Multidisciplinary
Рубрики:
DNA-BASE COMPOSITION
   ASYMMETRIC SUBSTITUTION PATTERNS
   PROTEIN-CODING REGIONS
   MICROBIAL GENOMES
   GENE IDENTIFICATION
   MARKOV-MODELS
   G+C CONTENT
   BIAS
   PREDICTION
   SELECTION
Кл.слова (ненормированные):
genome -- cluster -- codon usage -- correlations -- entropy -- mean field -- Cluster -- Codon usage -- Correlations -- Entropy -- Genome -- Mean field -- Approximation theory -- Correlation methods -- Database systems -- Entropy -- Functions -- Genes -- Mathematical models -- Clusters -- Codon usage -- Genomes -- Mean field -- Bacteria
Аннотация: Three results are presented. First, we prove the existence of a universal 7-cluster structure in all 143 completely sequenced bacterial genomes available in Genbank in August 2004, and explained its properties. The 7-cluster structure is responsible for the main part of sequence heterogeneity in bacterial genomes. In this sense, our 7 clusters is the basic model of bacterial genome sequence. We demonstrated that there are four basic "pure" types of this model, observed in nature: "parallel triangles", "perpendicular triangles", degenerated case and the flower-like type. Second, we answered the question: how big are the position-specific information and the contribution connected with correlations between nucleotide. The accuracy of the mean-field (context-free) approximation is estimated for bacterial genomes. We show that codon us-age of bacterial genomes is a multi-linear function of their genomic G+C-content with high accuracy (more precisely, by two similar functions, one for eubacterial genomes and the other one for archaea). Description of these two codon-usage trajectories is the third result. All 143 cluster animated 3D-scatters are collected in a database and is made available on our web-site: http://www.ihes.fr/similar to zinovyev/7clusters. (c) 2005 Elsevier B.V. All rights reserved.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Univ Leicester, Dept Math, Leicester LE1 7RH, Leics, England
RAS, SB, Inst Computat Modelling, Krasnoyarsk, Russia
Bures Sur Yvette & Bioinformat Serv Inst Curie, Inst Hautes Etudes Sci, Paris, France
ИВМ СО РАН
Department of Mathematics, University of Leicester, Leicester, University Road, Leicester LE1 7RH, United Kingdom
Institute of Computational Modelling, SB RAS, Krasnoyarsk, Russian Federation
Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette and Bioinformatics Service of Institut Curie, Paris, France

Доп.точки доступа:
Popova, T.; Zinovyev, A.
}
Найти похожие

Functionalized magnetite nanoparticles: Characterization, bioeffects, and role of reactive oxygen species in unicellular and enzymatic systems / A. G. Kicheeva, E. S. Sushko, L. S. Bondarenko [et al.] // Int. J. Mol. Sci. - 2023. - Vol. 24, Is. 2. - Ст. 1133, DOI 10.3390/ijms24021133. - Cited References: 125. - This research was funded by Russian Science Foundation, N 22-73-10222 . - ISSN 1661-6596. - ISSN 1422-0067
Кл.слова (ненормированные):
magnetite nanoparticles -- surface modification -- humic acids -- organosilane -- reactive oxygen species -- toxicity -- bioluminescence assay -- bacteria -- enzymes -- oxidative stress -- prooxidant -- ferroptosis
Аннотация: The current study evaluates the role of reactive oxygen species (ROS) in bioeffects of magnetite nanoparticles (MNPs), such as bare (Fe3O4), humic acids (Fe3O4-HA), and 3-aminopropyltriethoxysilane (Fe3O4-APTES) modified MNPs. Mössbauer spectroscopy was used to identify the local surrounding for Fe atom/ions and the depth of modification for MNPs. It was found that the Fe3O4-HA MNPs contain the smallest, whereas the Fe3O4-APTES MNPs contain the largest amount of Fe2+ ions. Bioluminescent cellular and enzymatic assays were applied to monitor the toxicity and anti-(pro-)oxidant activity of MNPs. The contents of ROS were determined by a chemiluminescence luminol assay evaluating the correlations with toxicity/anti-(pro-)oxidant coefficients. Toxic effects of modified MNPs were found at higher concentrations (>10−2 g/L); they were related to ROS storage in bacterial suspensions. MNPs stimulated ROS production by the bacteria in a wide concentration range (10−15–1 g/L). Under the conditions of model oxidative stress and higher concentrations of MNPs (>10−4 g/L), the bacterial bioassay revealed prooxidant activity of all three MNP types, with corresponding decay of ROS content. Bioluminescence enzymatic assay did not show any sensitivity to MNPs, with negligible change in ROS content. The results clearly indicate that cell-membrane processes are responsible for the bioeffects and bacterial ROS generation, confirming the ferroptosis phenomenon based on iron-initiated cell-membrane lipid peroxidation.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Physics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Department of General Engineering, Moscow Aviation Institute, Moscow, 125993, Russian Federation
Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Sklifosovsky Research Institute for Emergency Medicine, Moscow, 129010, Russian Federation
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russian Federation
Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, P.le Fermi, 1, Portici, 80055, Italy
Biophysics Department, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Kicheeva, A. G.; Sushko, E. S.; Сушко, Екатерина Сергеевна; Bondarenko, L. S.; Kydralieva, K. A.; Pankratov, D. A.; Tropskaya, N. S.; Dzeranov, A. A.; Dzhardimalieva, G. I.; Zarrelli, M.; Kudryasheva, N. S.
}
Найти похожие

Ferritization of industrial waste water and microbial synthesis of iron-based magnetic nanomaterials from sediments / M. I. Teremova [et al.] // Environ. Prog. Sustain. Energy. - 2016. - Vol. 35, Is. 5. - P. 1407-1414, DOI 10.1002/ep.12368. - Cited References:26. - The work has been carried out with support of grant of RFFI No 10-08-01278 and DST-ILTP-A.2.61 under DST-RFBR Indo-Russian Long term Collaborative Project. Authors are grateful to P.P. Pustoshilov, N.M. Kuchin, O.A. Bayukov, A.P. Puzyr and Lobova T.I. for assistance in experiment performance and valuable remarks. . - ISSN 1944-7442. - ISSN 1944-7450

РУБ Green & Sustainable science & Technology + Engineering, Environmental + Engineering, Chemical + Engineering, Industrial + Environmental Sciences
Рубрики:
ACIDITHIOBACILLUS FERROOXIDANS CELLS
POT MULTICOMPONENT SYNTHESIS
Кл.слова (ненормированные):
industrial wastes -- ferritization -- bacteria -- magnetic -- ferrihydrite -- nanoparticles
Аннотация: The precipitation of iron and associated heavy metals in industrial waste water and in model solution using ferritization and aerobic bacterial culture was investigated. Magnetic sediments extractable by magnetic separation (specific saturation magnetization of 16–36.8 G cm3/g) were produced by precipitation of iron by ferritization method at рН (8–10) and 60–80°С for 15–30 min. Nanoparticles of ferrihydrite or ferric hydroxide doped with associated metals (Co, Ni) were produced under precipitation of ferric iron in model solution with bacteria at the temperature 26–34°С. The radii of synthesized particles are 1–5 nm and nanoparticles of ferrihydrite are superparamagnetic in both un-doped and doped (Co, Ni, Zn) sets. Dispersed structure of biogenic nanoparticle sols, their magnetic and other properties were studied by atomic force microscopy, X-ray small-angle scattering, X-ray diffraction, electron magnetic resonance, Mössbauer and X-ray photoelectron spectroscopy.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Boreskov Inst Catalysis & Chem Technol, Siberian Branch, Novosibirsk, Russia.
Russian Acad Sci, Inst Catalysis, Siberian Branch, Novosibirsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Natl Met Lab, CSIR, Jamshedpur, Bihar, India.

Доп.точки доступа:
Teremova, M. I.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Romanchenko, A. S.; Tuzikov, F. V.; Gurevich, Y. L.; Tsibina, O. V.; Yakubailik, E. K.; Якубайлик, Эдуард Константинович; Abhilash; RFFI [10-08-01278]; DST-RFBR Indo-Russian Long term Collaborative Project [DST-ILTP-A.2.61]
}
Найти похожие

10.

Electron-microscope study of the structure of luciferase from luminescent bacteria / M. V. Salnikov, S. E. Medvedeva, V. N. Petushkov, I. I. Gitelzon // Doklady Akademii Nauk. - 1981. - Vol. 261, Is. 5. - P. 1254-1256. - Cited References: 4 . - ISSN 0002-3264

Держатели документа:
L.V. Kirensky Inst. Phys., Siberian Branch, USSR Acad. Sci., Krasnoyarsk, Russia

Доп.точки доступа:
Salnikov, M. V.; Medvedeva, S. E.; Petushkov, V. N.; Gitelzon, I. I.; Гительзон, Иосиф Исаевич
}
Найти похожие