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Teplonogova MA, Kozlova AA, Yapryntsev AD, Baranchikov AE, Ivanov VK. Synthesis and Thermal Decomposition of High-Entropy Layered Rare Earth Hydroxychlorides. Molecules 2024; 29:1634. [PMID: 38611913 PMCID: PMC11013826 DOI: 10.3390/molecules29071634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
The synthesis of multicomponent and high-entropy compounds has become a rapidly developing field in advanced inorganic chemistry, making it possible to combine the properties of multiple elements in a single phase. This paper reports on the synthesis of a series of novel high-entropy layered rare earth hydroxychlorides, namely, (Sm,Eu,Gd,Y,Er)2(OH)5Cl, (Eu,Gd,Tb,Y,Er)2(OH)5Cl, (Eu,Gd,Dy,Y,Er)2(OH)5Cl, and (Eu,Gd,Y,Er,Yb)2(OH)5Cl, using a homogeneous hydrolysis technique under hydrothermal conditions. Elemental mapping proved the even distribution of rare earth elements, while luminescence spectroscopy confirmed efficient energy transfer between europium and other rare earth cations, thus providing additional evidence of the homogeneous distribution of rare earth elements within the crystal lattice. The average rare earth cation radii correlated linearly with the unit cell parameters (0.868 < R2 < 0.982) of the high-entropy layered rare earth hydroxychlorides. The thermal stability of the high-entropy layered rare earth hydroxychlorides was similar to that of individual hydroxychlorides and their binary solid solutions.
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Affiliation(s)
- Maria A. Teplonogova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anfisa A. Kozlova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexey D. Yapryntsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia
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Yambulatov DS, Lutsenko IA, Baravikov DE, Dolgushin FM, Astaf’eva TV, Bekker OB, Nersisyan LG, Samvelyan MA, Ghochikyan TV, Kiskin MA, Eremenko IL, Ivanov VK. Synthesis, Structure, Biological Activity, and Luminescence Properties of a "Butterfly"-Type Silver Cluster with 3-Benzyl-4-phenyl-1,2,4-triazol-5-thiol. Molecules 2023; 29:105. [PMID: 38202688 PMCID: PMC10779673 DOI: 10.3390/molecules29010105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/17/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
A new silver(I) cluster [Ag8L4(Py)(Pype)]·4Py·11H2O (I) with 3-benzyl-4-phenyl-1,2,4-triazol-5-thiol (L) was synthesized via the direct reaction of AgNO3 and L in MeOH, followed by recrystallization from a pyridine-piperidine mixture. The compound I was isolated in a monocrystal form and its crystal structure was determined via single crystal X-ray diffraction. The complex forms a "butterfly" cluster with triazol-5-thioles. The purity of the silver complex and its stability in the solution was confirmed via NMR analysis. Excitation and emission of the free ligand and its silver complex were studied at room temperature for solid samples. The in vitro biological activity of the free ligand and its complex was studied in relation to the non-pathogenic Mycolicibacterium smegmatis strain. Complexation of the free ligand with silver increases the biological activity of the former by almost twenty times. For the newly obtained silver cluster, a bactericidal effect was established.
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Affiliation(s)
- Dmitriy S. Yambulatov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Irina A. Lutsenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Dmitry E. Baravikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Fedor M. Dolgushin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Tatiana V. Astaf’eva
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Olga B. Bekker
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina, 3, 119333 Moscow, Russia;
| | - Lusik G. Nersisyan
- Faculty of Chemistry, Yerevan State University, 1 A Manoukyan Str., Yerevan 0025, Armenia; (L.G.N.); (M.A.S.); (T.V.G.)
| | - Melanya A. Samvelyan
- Faculty of Chemistry, Yerevan State University, 1 A Manoukyan Str., Yerevan 0025, Armenia; (L.G.N.); (M.A.S.); (T.V.G.)
| | - Tariel V. Ghochikyan
- Faculty of Chemistry, Yerevan State University, 1 A Manoukyan Str., Yerevan 0025, Armenia; (L.G.N.); (M.A.S.); (T.V.G.)
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Igor L. Eremenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia; (I.A.L.); (D.E.B.); (F.M.D.); (T.V.A.); (M.A.K.); (I.L.E.); (V.K.I.)
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Chukavin NN, Filippova KO, Ermakov AM, Karmanova EE, Popova NR, Anikina VA, Ivanova OS, Ivanov VK, Popov AL. Redox-Active Cerium Fluoride Nanoparticles Selectively Modulate Cellular Response against X-ray Irradiation In Vitro. Biomedicines 2023; 12:11. [PMID: 38275372 PMCID: PMC10813610 DOI: 10.3390/biomedicines12010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Ionizing radiation-induced damage in cancer and normal cells leads to apoptosis and cell death, through the intracellular oxidative stress, DNA damage and disorders of their metabolism. Irradiation doses that do not lead to the death of tumor cells can result in the emergence of radioresistant clones of these cells due to the rearrangement of metabolism and the emergence of new mutations, including those in the genes responsible for DNA repair. The search for the substances capable of modulating the functioning of the tumor cell repair system is an urgent task. Here we analyzed the effect of cerium(III) fluoride nanoparticles (CeF3 NPs) on normal (human mesenchymal stem cells-hMSC) and cancer (MCF-7 line) human cells after X-ray radiation. CeF3 NPs effectively prevent the formation of hydrogen peroxide and hydroxyl radicals in an irradiated aqueous solution, showing pronounced antioxidant properties. CeF3 NPs are able to protect hMSC from radiation-induced proliferation arrest, increasing their viability and mitochondrial membrane potential, and, conversely, inducing the cell death of MCF-7 cancer cells, causing radiation-induced mitochondrial hyperpolarization. CeF3 NPs provided a significant decrease in the number of double-strand breaks (DSBs) in hMSC, while in MCF-7 cells the number of γ-H2AX foci dramatically increased in the presence of CeF3 4 h after irradiation. In the presence of CeF3 NPs, there was a tendency to modulate the expression of most analyzed genes associated with the development of intracellular oxidative stress, cell redox status and the DNA-repair system after X-ray irradiation. Cerium-containing nanoparticles are capable of providing selective protection of hMSC from radiation-induced injuries and are considered as a platform for the development of promising clinical radioprotectors.
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Affiliation(s)
- Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
- Scientific and Educational Center, State University of Education, Moscow 105005, Russia
| | - Kristina O. Filippova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
| | - Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
- Scientific and Educational Center, State University of Education, Moscow 105005, Russia
| | - Ekaterina E. Karmanova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
| | - Nelli R. Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
| | - Viktoriia A. Anikina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
| | - Olga S. Ivanova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russia;
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia;
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia; (N.N.C.); (K.O.F.); (A.M.E.); (E.E.K.); (N.R.P.); (V.A.A.)
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Abramova AV, Kozlov DA, Veselova VO, Kozlova TO, Ivanova OS, Mikhalev ES, Voytov YI, Baranchikov AE, Ivanov VK, Cravotto G. Coating of Filter Materials with CeO 2 Nanoparticles Using a Combination of Aerodynamic Spraying and Suction. Nanomaterials (Basel) 2023; 13:3168. [PMID: 38133066 PMCID: PMC10745644 DOI: 10.3390/nano13243168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Textiles and nonwovens (including those used in ventilation systems as filters) are currently one of the main sources of patient cross-infection. Healthcare-associated infections (HAIs) affect 5-10% of patients and stand as the tenth leading cause of death. Therefore, the development of new methods for creating functional nanostructured coatings with antibacterial and antiviral properties on the surfaces of textiles and nonwoven materials is crucial for modern medicine. Antimicrobial filter technology must be high-speed, low-energy and safe if its commercialization and mass adoption are to be successful. Cerium oxide nanoparticles can act as active components in these coatings due to their high antibacterial activity and low toxicity. This paper focuses on the elaboration of a high-throughput and resource-saving method for the deposition of cerium oxide nanoparticles onto nonwoven fibrous material for use in air-conditioning filters. The proposed spraying technique is based on the use of an aerodynamic emitter and simultaneous suction. Cerium oxide nanoparticles have successfully been deposited onto the filter materials used in air conditioning systems; the antibacterial activity of the ceria-modified filters exceeded 4.0.
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Affiliation(s)
- Anna V. Abramova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Daniil A. Kozlov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Varvara O. Veselova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Taisiya O. Kozlova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Olga S. Ivanova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia;
| | - Egor S. Mikhalev
- Limited Liability Company “Angstrem”, Bolshaya Polyanka, 51A/9, 119180 Moscow, Russia;
| | - Yuri I. Voytov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Alexandr E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, 119991 Moscow, Russia; (D.A.K.); (V.O.V.); (T.O.K.); (Y.I.V.); (V.K.I.)
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy
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Sozarukova MM, Kochneva EM, Proskurnina EV, Mikheev IV, Novikov DO, Proskurnin MA, Ivanov VK. Albumin Retains Its Transport Function after Interaction with Cerium Dioxide Nanoparticles. ACS Biomater Sci Eng 2023; 9:6759-6772. [PMID: 37955421 DOI: 10.1021/acsbiomaterials.3c01416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
The interaction of inorganic nanomaterials with biological fluids containing proteins can lead not only to the formation of a protein corona and thereby to a change in the biological activity of nanoparticles but also to a significant effect on the structural and functional properties of the biomolecules themselves. This work studied the interaction of nanoscale CeO2, the most versatile nanozyme, with human serum albumin (HSA). Fourier transform infrared spectroscopy, MALDI-TOF mass spectrometry, UV-vis spectroscopy, and fluorescence spectroscopy confirmed the formation of HSA-CeO2 nanoparticle conjugates. Changes in protein conformation, which depend on the concentration of both citrate-stabilized CeO2 nanoparticles and pristine CeO2 nanoparticles, did not affect albumin drug-binding sites and, accordingly, did not impair the HSA transport function. The results obtained shed light on the biological consequences of the CeO2 nanoparticles' entrance into the body, which should be taken into account when engineering nanobiomaterials to increase their efficiency and reduce the side effects.
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Affiliation(s)
- Madina M Sozarukova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Avenue, 31, Moscow 119991, Russia
| | - Ekaterina M Kochneva
- Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
| | - Elena V Proskurnina
- Research Centre for Medical Genetics, Moskvorechye Street, 1, Moscow 115522, Russia
| | - Ivan V Mikheev
- Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
| | - Dmitry O Novikov
- Bauman Moscow State Technical University, 2-nd Baumanskaya Street, 5, Moscow 105005, Russia
| | - Mikhail A Proskurnin
- Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Avenue, 31, Moscow 119991, Russia
- National Research University Higher School of Economics, Pokrovsky Bulvar, 11, Moscow 109028, Russia
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Ermakov AM, Afanasyeva VA, Lazukin AV, Shlyapnikov YM, Zhdanova ES, Kolotova AA, Blagodatski AS, Ermakova ON, Chukavin NN, Ivanov VK, Popov AL. Synergistic Antimicrobial Effect of Cold Atmospheric Plasma and Redox-Active Nanoparticles. Biomedicines 2023; 11:2780. [PMID: 37893152 PMCID: PMC10604215 DOI: 10.3390/biomedicines11102780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/03/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
Cold argon plasma (CAP) and metal oxide nanoparticles are well known antimicrobial agents. In the current study, on an example of Escherichia coli, a series of analyses was performed to assess the antibacterial action of the combination of these agents and to evaluate the possibility of using cerium oxide and cerium fluoride nanoparticles for a combined treatment of bacterial diseases. The joint effect of the combination of cold argon plasma and several metal oxide and fluoride nanoparticles (CeO2, CeF3, WO3) was investigated on a model of E. coli colony growth on agar plates. The mutagenic effect of different CAP and nanoparticle combinations on bacterial DNA was investigated, by means of a blue-white colony assay and RAPD-PCR. The effect on cell wall damage, using atomic force microscopy, was also studied. The results obtained demonstrate that the combination of CAP and redox-active metal oxide nanoparticles (RAMON) effectively inhibits bacterial growth, providing a synergistic antimicrobial effect exceeding that of any of the agents alone. The combination of CAP and CeF3 was shown to be the most effective mutagen against plasmid DNA, and the combination of CAP and WO3 was the most effective against bacterial genomic DNA. The analysis of direct cell wall damage by atomic force microscopy showed the combination of CAP and CeF3 to be the most effective antimicrobial agent. The combination of CAP and redox-active metal oxide or metal fluoride nanoparticles has a strong synergistic antimicrobial effect on bacterial growth, resulting in plasmid and genomic DNA damage and cell wall damage. For the first time, a strong antimicrobial and DNA-damaging effect of CeF3 nanoparticles has been demonstrated.
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Affiliation(s)
- Artem M. Ermakov
- Hospital of the Pushchino Scientific Center of the Russian Academy of Sciences, 142290 Pushchino, Russia (V.A.A.); (E.S.Z.)
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
- ANO Engineering Physics Institute, 142210 Serpukhov, Russia
| | - Vera A. Afanasyeva
- Hospital of the Pushchino Scientific Center of the Russian Academy of Sciences, 142290 Pushchino, Russia (V.A.A.); (E.S.Z.)
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Alexander V. Lazukin
- Troitsk Institute of Innovative and Thermonuclear Research (JSC “SSC RF TRINITY”), 108840 Moscow, Russia;
| | - Yuri M. Shlyapnikov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Elizaveta S. Zhdanova
- Hospital of the Pushchino Scientific Center of the Russian Academy of Sciences, 142290 Pushchino, Russia (V.A.A.); (E.S.Z.)
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Anastasia A. Kolotova
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Artem S. Blagodatski
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Olga N. Ermakova
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
| | - Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
- Scientific and Educational Center, State University of Education, 105005 Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia; (Y.M.S.); (A.A.K.); (A.S.B.); (O.N.E.); (N.N.C.)
- Scientific and Educational Center, State University of Education, 105005 Moscow, Russia
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Chukavin NN, Ivanov VK, Popov AL. Calcein-Modified CeO 2 for Intracellular ROS Detection: Mechanisms of Action and Cytotoxicity Analysis In Vitro. Cells 2023; 12:2416. [PMID: 37830630 PMCID: PMC10572292 DOI: 10.3390/cells12192416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
Cerium oxide nanoparticles (CeO2 NPs) are metal-oxide-based nanozymes with unique reactive oxygen species (ROS) scavenging abilities. Here, we studied new CeO2 NPs modified with calcein (CeO2-calcein) as an intracellular ROS inactivation/visualization theranostic agent. The molecular mechanisms of the CeO2-calcein intracellular activity, allowing for the direct monitoring of ROS inactivation in living cells, were studied. CeO2-calcein was taken up by both normal (human mesenchymal stem cells, hMSc) and cancer (human osteosarcoma, MNNG/Hos cell line) cells, and was easily decomposed via endogenous or exogenous ROS, releasing brightly fluorescent calcein, which could be quantitatively detected using fluorescence microscopy. It was shown that the CeO2-calcein has selective cytotoxicity, inducing the death of human osteosarcoma cells and modulating the expression of key genes responsible for cell redox status as well as proliferative and migration activity. Such cerium-based theranostic agents can be used in various biomedical applications.
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Affiliation(s)
- Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow 142290, Russia;
- Scientific and Educational Center, State University of Education, Moscow 105005, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia;
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow 142290, Russia;
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Silina EV, Stupin VA, Manturova NE, Ivanova OS, Popov AL, Mysina EA, Artyushkova EB, Kryukov AA, Dodonova SA, Kruglova MP, Tinkov AA, Skalny AV, Ivanov VK. Influence of the Synthesis Scheme of Nanocrystalline Cerium Oxide and Its Concentration on the Biological Activity of Cells Providing Wound Regeneration. Int J Mol Sci 2023; 24:14501. [PMID: 37833949 PMCID: PMC10572590 DOI: 10.3390/ijms241914501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
In the ongoing search for practical uses of rare-earth metal nanoparticles, cerium dioxide nanoparticles (nanoceria) have received special attention. The purpose of this research was to study the biomedical effects of nanocrystalline forms of cerium oxide obtained by different synthesis schemes and to evaluate the effect of different concentrations of nanoceria (from 10-2 to 10-6 M) on cells involved in the regeneration of skin cell structures such as fibroblasts, mesenchymal stem cells, and keratinocytes. Two different methods of nanoceria preparation were investigated: (1) CeO-NPs-1 by precipitation from aqueous solutions of cerium (III) nitrate hexahydrate and citric acid and (2) CeO-NPs-2 by hydrolysis of ammonium hexanitratocerate (IV) under conditions of thermal autoclaving. According to the X-ray diffraction, transmission electron microscopy, and dynamic light scattering data, CeO2-1 consists of individual particles of cerium dioxide (3-5 nm) and their aggregates with diameters of 60-130 nm. CeO2-2 comprises small aggregates of 8-20 nm in diameter, which consist of particles of 2-3 nm in size. Cell cultures of human fibroblasts, human mesenchymal stem cells, and human keratinocytes were cocultured with different concentrations of nanoceria sols (10-2, 10-3, 10-4, 10-5, and 10-6 mol/L). The metabolic activity of all cell types was investigated by MTT test after 48 and 72 h, whereas proliferative activity and cytotoxicity were determined by quantitative cell culture counting and live/dead test. A dependence of biological effects on the method of nanoceria preparation and concentration was revealed. Data were obtained with respect to the optimal concentration of sol to achieve the highest metabolic effect in the used cell cultures. Hypotheses about the mechanisms of the obtained effects and the structure of a fundamentally new medical device for accelerated healing of skin wounds were formulated. The method of nanoceria synthesis and concentration fundamentally and significantly change the biological activity of cell cultures of different types-from suppression to pronounced stimulation. The best biological activity of cell cultures was determined through cocultivation with sols of citrate nanoceria (CeO-NPs-1) at a concentration of 10-3-10-4 M.
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Affiliation(s)
- Ekaterina V. Silina
- Institute of Biodesign and Modeling of Complex Systems, Center of Bioelementology and Human Ecology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (M.P.K.); (A.A.T.); (A.V.S.)
| | - Victor A. Stupin
- Department of Hospital Surgery, Pirogov Russian National Research Medical University, 117997 Moscow, Russia;
| | - Natalia E. Manturova
- Department of Plastic and Reconstructive Surgery, Cosmetology and Cell Technologies, Pirogov Russian National Research Medical University, 117997 Moscow, Russia;
| | - Olga S. Ivanova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia;
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.L.P.); (E.A.M.)
| | - Elena A. Mysina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.L.P.); (E.A.M.)
| | - Elena B. Artyushkova
- Research Institute of Experimental Medicine, Kursk State Medical University, 305041 Kursk, Russia; (E.B.A.); (A.A.K.); (S.A.D.)
| | - Alexey A. Kryukov
- Research Institute of Experimental Medicine, Kursk State Medical University, 305041 Kursk, Russia; (E.B.A.); (A.A.K.); (S.A.D.)
| | - Svetlana A. Dodonova
- Research Institute of Experimental Medicine, Kursk State Medical University, 305041 Kursk, Russia; (E.B.A.); (A.A.K.); (S.A.D.)
| | - Maria P. Kruglova
- Institute of Biodesign and Modeling of Complex Systems, Center of Bioelementology and Human Ecology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (M.P.K.); (A.A.T.); (A.V.S.)
| | - Alexey A. Tinkov
- Institute of Biodesign and Modeling of Complex Systems, Center of Bioelementology and Human Ecology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (M.P.K.); (A.A.T.); (A.V.S.)
- Laboratory of Ecobiomonitoring and Quality Control, Yaroslavl State University, 150003 Yaroslavl, Russia
| | - Anatoly V. Skalny
- Institute of Biodesign and Modeling of Complex Systems, Center of Bioelementology and Human Ecology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (M.P.K.); (A.A.T.); (A.V.S.)
- Laboratory of Ecobiomonitoring and Quality Control, Yaroslavl State University, 150003 Yaroslavl, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia;
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9
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Kolmanovich DD, Chukavin NN, Savintseva IV, Mysina EA, Popova NR, Baranchikov AE, Sozarukova MM, Ivanov VK, Popov AL. Hybrid Polyelectrolyte Capsules Loaded with Gadolinium-Doped Cerium Oxide Nanoparticles as a Biocompatible MRI Agent for Theranostic Applications. Polymers (Basel) 2023; 15:3840. [PMID: 37765694 PMCID: PMC10536467 DOI: 10.3390/polym15183840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Layer-by-layer (LbL) self-assembled polyelectrolyte capsules have demonstrated their unique advantages and capability in drug delivery applications. These ordered micro/nanostructures are also promising candidates as imaging contrast agents for diagnostic and theranostic applications. Magnetic resonance imaging (MRI), one of the most powerful clinical imaging modalities, is moving forward to the molecular imaging field and requires advanced imaging probes. This paper reports on a new design of MRI-visible LbL capsules, loaded with redox-active gadolinium-doped cerium oxide nanoparticles (CeGdO2-x NPs). CeGdO2-x NPs possess an ultrasmall size, high colloidal stability, and pronounced antioxidant properties. A comprehensive analysis of LbL capsules by TEM, SEM, LCSM, and EDX techniques was carried out. The research demonstrated a high level of biocompatibility and cellular uptake efficiency of CeGdO2-x-loaded capsules by cancer (human osteosarcoma and adenocarcinoma) cells and normal (human mesenchymal stem) cells. The LbL-based delivery platform can also be used for other imaging modalities and theranostic applications.
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Affiliation(s)
- Danil D. Kolmanovich
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Irina V. Savintseva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Elena A. Mysina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Nelli R. Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Madina M. Sozarukova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
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10
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Teplonogova MA, Yapryntsev AD, Baranchikov AE, Ivanov VK. Cinnamate-Intercalated Layered Yttrium Hydroxide: UV Light-Responsive Switchable Material. Micromachines (Basel) 2023; 14:1791. [PMID: 37763954 PMCID: PMC10534862 DOI: 10.3390/mi14091791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
In recent years, there has been an increasing interest in stimuli-responsive host-guest materials due to the high potential for their application in switchable devices. Light is the most convenient stimulus for operating these materials; a light-responsive guest affects the host structure and the functional characteristics of the entire material. UV-transparent layered rare earth hydroxides intercalated with UV-switchable anions are promising candidates as stimuli-responsive host-guest materials. The interlayer distance in the layered rare earth hydroxides depends on the size of the intercalated anions, which could be changed in situ, e.g., via anion isomerisation. Nevertheless, for layered rare earth hydroxides, the possibility of such changes has not been reported yet. A good candidate anion that is capable of intercalating into the interlayer space is the cinnamate anion, which undergoes UV-assisted irreversible trans-cis isomerisation. In this work, both trans- and cis-cinnamate anions were intercalated in layered yttrium hydroxide (LYH). Upon UV-irradiation, the interlayer distance of trans-cinnamate-intercalated layered yttrium hydroxide suspended in isopropanol changed from 21.9 to 20.6 Å. For the first time, the results obtained demonstrate the possibility of using layered rare earth hydroxides as stimuli-responsive materials.
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Affiliation(s)
| | | | | | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
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11
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Filippova AD, Sozarukova MM, Baranchikov AE, Kottsov SY, Cherednichenko KA, Ivanov VK. Peroxidase-like Activity of CeO 2 Nanozymes: Particle Size and Chemical Environment Matter. Molecules 2023; 28:molecules28093811. [PMID: 37175221 PMCID: PMC10180353 DOI: 10.3390/molecules28093811] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The enzyme-like activity of metal oxide nanoparticles is governed by a number of factors, including their size, shape, surface chemistry and substrate affinity. For CeO2 nanoparticles, one of the most prominent inorganic nanozymes that have diverse enzymatic activities, the size effect remains poorly understood. The low-temperature hydrothermal treatment of ceric ammonium nitrate aqueous solutions made it possible to obtain CeO2 aqueous sols with different particle sizes (2.5, 2.8, 3.9 and 5.1 nm). The peroxidase-like activity of ceria nanoparticles was assessed using the chemiluminescent method in different biologically relevant buffer solutions with an identical pH value (phosphate buffer and Tris-HCl buffer, pH of 7.4). In the phosphate buffer, doubling CeO2 nanoparticles' size resulted in a two-fold increase in their peroxidase-like activity. The opposite effect was observed for the enzymatic activity of CeO2 nanoparticles in the phosphate-free Tris-HCl buffer. The possible reasons for the differences in CeO2 enzyme-like activity are discussed.
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Affiliation(s)
- Arina D Filippova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Madina M Sozarukova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Sergey Yu Kottsov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Kirill A Cherednichenko
- Department of Physical and Colloid Chemistry, Faculty of Chemical and Environmental Engineering, National University of Oil and Gas "Gubkin University", 119991 Moscow, Russia
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
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12
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Petrova VA, Dubashynskaya NV, Gofman IV, Golovkin AS, Mishanin AI, Aquino AD, Mukhametdinova DV, Nikolaeva AL, Ivan'kova EM, Baranchikov AE, Yakimansky AV, Ivanov VK, Skorik YA. Biocomposite films based on chitosan and cerium oxide nanoparticles with promising regenerative potential. Int J Biol Macromol 2023; 229:329-343. [PMID: 36592852 DOI: 10.1016/j.ijbiomac.2022.12.305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
Polymeric nanocomposite materials have great potential in the development of tissue-engineered scaffolds because they affect the structure and properties of polymeric materials and regulate cell proliferation and differentiation. In this work, cerium oxide nanoparticles (CeONPs) were incorporated into a chitosan (CS) film to improve the proliferation of multipotent mesenchymal stem cells (MSCs). The citrate-stabilized CeONPs with a negative ζ-potential (-25.0 mV) were precoated with CS to obtain positively charged particles (+20.3 mV) and to prevent their aggregation in the composite solution. The composite CS-CeONP films were prepared in the salt and basic forms using a dry-cast process. The films obtained in both forms were characterized by a uniform distribution of CeONPs. The incorporation of CeONPs into the salt form of CS increased the stiffness of the CS-CeONP film, while the subsequent conversion of the film to the basic form resulted in a decrease in both the Young's modulus and the yield stress. The redox activity (Ce4+ ⇌ Ce3+) of cerium oxide in the CS-CeONP film was confirmed by thermal oxidative degradation. In vitro culture of MSCs showed that the CS-CeONP film has good biocompatibility, and in vivo experiments demonstrated its substantial regenerative potential.
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Affiliation(s)
- Valentina A Petrova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Natallia V Dubashynskaya
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Iosif V Gofman
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Alexey S Golovkin
- Almazov National Medical Research Centre, Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Alexander I Mishanin
- Almazov National Medical Research Centre, Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Arthur D Aquino
- Almazov National Medical Research Centre, Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Daria V Mukhametdinova
- Almazov National Medical Research Centre, Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Alexandra L Nikolaeva
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Elena M Ivan'kova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Alexander E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii 31, Moscow 119071, Russian Federation
| | - Alexander V Yakimansky
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii 31, Moscow 119071, Russian Federation
| | - Yury A Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, St. Petersburg 199004, Russian Federation.
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13
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Filippova KO, Ermakov AM, Popov AL, Ermakova ON, Blagodatsky AS, Chukavin NN, Shcherbakov AB, Baranchikov AE, Ivanov VK. Mitogen-like Cerium-Based Nanoparticles Protect Schmidtea mediterranea against Severe Doses of X-rays. Int J Mol Sci 2023; 24:ijms24021241. [PMID: 36674757 PMCID: PMC9864839 DOI: 10.3390/ijms24021241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/13/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Novel radioprotectors are strongly demanded due to their numerous applications in radiobiology and biomedicine, e.g., for facilitating the remedy after cancer radiotherapy. Currently, cerium-containing nanomaterials are regarded as promising inorganic radioprotectors due to their unrivaled antioxidant activity based on their ability to mimic the action of natural redox enzymes like catalase and superoxide dismutase and to neutralize reactive oxygen species (ROS), which are by far the main damaging factors of ionizing radiation. The freshwater planarian flatworms are considered a promising system for testing new radioprotectors, due to the high regenerative potential of these species and an excessive amount of proliferating stem cells (neoblasts) in their bodies. Using planarian Schmidtea mediterranea, we tested CeO2 nanoparticles, well known for their antioxidant activity, along with much less studied CeF3 nanoparticles, for their radioprotective potential. In addition, both CeO2 and CeF3 nanoparticles improve planarian head blastema regeneration after ionizing irradiation by enhancing blastema growth, increasing the number of mitoses and neoblasts' survival, and modulating the expression of genes responsible for the proliferation and differentiation of neoblasts. The CeO2 nanoparticles' action stems directly from their redox activity as ROS scavengers, while the CeF3 nanoparticles' action is mediated by overexpression of "wound-induced genes" and neoblast- and stem cell-regulating genes.
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Affiliation(s)
- Kristina O. Filippova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
- Moscow Region Pedagogical State University, Moscow 141014, Russia
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
- Correspondence:
| | - Olga N. Ermakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Artem S. Blagodatsky
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Russia
- Moscow Region Pedagogical State University, Moscow 141014, Russia
| | - Alexander B. Shcherbakov
- Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
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14
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Teplonogova MA, Yapryntsev AD, Baranchikov AE, Ivanov VK. High-Entropy Layered Rare Earth Hydroxides. Inorg Chem 2022; 61:19817-19827. [PMID: 36417701 DOI: 10.1021/acs.inorgchem.2c02950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
New high-entropy layered rare earth hydroxides ─ (Y,Eu,Gd,Er,Sm)2(OH)5NO3, (Y,Eu,Gd,Er,Tb)2(OH)5NO3, (Y,Eu,Gd,Er,Yb)2(OH)5NO3, (Y,Eu,Gd,Er,Nd)2(OH)5NO3, and (Y,Eu,Gd,Er,Nd,Sm,Tb)2(OH)5NO3 ─ were obtained using a hydrothermal microwave method. The annealing of layered rare earth hydroxides at 900 °C resulted in the corresponding high-entropy rare earth oxides. Based on inductively coupled plasma atomic emission spectroscopy data, the values for configurational entropy for both rare earth hydroxides and oxides were estimated, confirming the formation of high-entropy compounds. Energy-dispersive X-ray spectroscopy mapping, including mapping in the scanning transmission microscopy mode, showed no signs of chemical segregation and confirmed uniform rare earth elements' distribution both in the particles of high-entropy layered basic nitrates and in the particles of high-entropy oxides. The ratios of rare earth cations in the initial aqueous solutions of mixed nitrates were close to the ratios of cations in the resulting high-entropy layered rare earth basic nitrates and high-entropy rare earth oxides.
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Affiliation(s)
- M A Teplonogova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow119991, Russia.,Lomonosov Moscow State University, Moscow119991, Russia
| | - A D Yapryntsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow119991, Russia
| | - A E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow119991, Russia
| | - V K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow119991, Russia.,National Research University Higher School of Economics, Moscow101000, Russia
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15
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Popov AL, Zholobak NM, Shcherbakov AB, Kozlova TO, Kolmanovich DD, Ermakov AM, Popova NR, Chukavin NN, Bazikyan EA, Ivanov VK. The Strong Protective Action of Ce 3+/F - Combined Treatment on Tooth Enamel and Epithelial Cells. Nanomaterials (Basel) 2022; 12:3034. [PMID: 36080071 PMCID: PMC9457955 DOI: 10.3390/nano12173034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/14/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
We studied the toxic effects of cerium and fluoride species on human dental pulp stem cells and epithelial cells of Cercopithecus aethiops as a surrogate for the human oral mucosa. The sequential use of CeCl3 and NH4F solutions in equimolar sub-toxic concentrations enabled the possible toxic effects of individual components to be avoided, ensuring the preservation of the metabolic activity of the cells due to the formation of CeF3 nanoparticles. Cerium fluoride nanoparticles and terbium-doped cerium fluoride nanoparticles exhibited neither cytotoxicity nor genotoxicity to dental pulp stem cells, even at high concentrations (10-4 M). In millimolar concentrations (from 10-5-10-6 M), these nanoparticles significantly increased the expression of genes responsible for the cell cycle, differentiation and proliferation. The formation of cerium fluoride on the surface of the mucous membrane and teeth provided protection against the development of carious lesions, periodontitis, ROS attacks and other inflammatory diseases of the oral cavity. Luminescent CeF3: Tb nanoparticles enabled the visualization of tooth enamel microcracks.
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Affiliation(s)
- Anton L. Popov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
| | - Nadia M. Zholobak
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
| | - Alexander B. Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
| | - Taisiya O. Kozlova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia
| | - Danil D. Kolmanovich
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
| | - Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
- Moscow Region State University, Moscow 141014, Russia
| | - Nelli R. Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
| | - Nikita N. Chukavin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
- Moscow Region State University, Moscow 141014, Russia
| | - Ernest A. Bazikyan
- Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia
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16
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Ermakova YA, Pominova DV, Voronov VV, Yapryntsev AD, Ivanov VK, Tabachkova NY, Fedorov PP, Kuznetsov SV. Synthesis of SrF 2:Yb:Er ceramic precursor powder by co-precipitation from aqueous solution with different fluorinating media: NaF, KF and NH 4F. Dalton Trans 2022; 51:5448-5456. [PMID: 35315853 DOI: 10.1039/d2dt00304j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The major challenge in optical ceramic technology is the quality of the starting precursor powder for pressing, which is a key element in the optical ceramic industry. One express and helpful technique for the estimation of powder quality is the estimation of the quantum yield of up-conversion luminescence; therefore precursor powders must exhibit high values of up-conversion luminescence efficiency. Single-phase solid solutions based on strontium fluoride doped with ytterbium and erbium were synthesised by co-precipitation from aqueous solutions using sodium fluoride, potassium fluoride and ammonium fluoride as fluorinating agents. The asymmetry of X-ray diffraction maxima indicated the presence of two populations of particles with the same chemical composition. The processes of extended flat particles' growth from smaller particles with a spherical morphology were revealed with transmission electron microscopy and X-ray diffraction. It was shown that when sodium fluoride and potassium fluoride were used they entered the crystal structure in an amount of 3-4 mol% and 1 mol%, respectively. The introduction of sodium and potassium led to an improvement in the sintering ability of particles and a significant increase in the particle size in ceramics by a factor of 5 and 2, respectively, in comparison with the use of ammonium fluoride. The quantum yield values of up-conversion luminescence at the level of tenths of a percent at a low pump power density of 0.1 W cm-2 were very high, which suggests that these synthetic techniques can be considered to be promising for the preparation of precursors of laser ceramics.
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Affiliation(s)
- Yu A Ermakova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
| | - D V Pominova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
| | - V V Voronov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
| | - A D Yapryntsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow, 119991, Russia
| | - V K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow, 119991, Russia
| | - N Yu Tabachkova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
| | - P P Fedorov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
| | - S V Kuznetsov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str, 38, 119991 Moscow, Russia.
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17
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Ivanov VK, Chekin SY, Lopatkin AV, Menyajlo AN, Maksioutov MA, Tumanov KA, Kashcheeva PV, Lovachev SS. Assessment of Radiological Hazard of Radioactive Waste Using Effective or Organ Doses: How This May Affect Final Waste Disposal. Health Phys 2022; 122:402-408. [PMID: 34966086 DOI: 10.1097/hp.0000000000001511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
ABSTRACT The radiological hazard of spent nuclear fuel and radioactive waste slows down further development of nuclear energy systems. The authors evaluate timescales required to reduce the radiological hazard of accumulated waste to the reference level of natural uranium that had been consumed by the nuclear energy system. The estimate of this time scale depends on the radiological hazard metric used in the calculations. In this study, two metrics are compared: (1) the committed effective dose based on ICRP Publication 72 and (2) the lifetime radiation risk calculated with use of organ doses and recent radiation risk models recommended by ICRP. The effective dose of the waste reaches the reference level 300 y after the accumulation of waste, while lifetime attributable risk of waste converges to natural uranium in 100 y. Thus, the lifetime attributable risk (LAR) metric is more appropriate to estimate the time requirements for radioactive waste storage and disposal. The effective dose metric significantly overestimates this timescale as it is not intended for quantifying radiation-related risks.
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Affiliation(s)
| | - S Yu Chekin
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
| | | | - A N Menyajlo
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
| | - M A Maksioutov
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
| | - K A Tumanov
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
| | - P V Kashcheeva
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
| | - S S Lovachev
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obninsk
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18
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Kozlova TO, Popov AL, Kolesnik IV, Kolmanovich DD, Baranchikov AE, Shcherbakov AB, Ivanov VK. Amorphous and crystalline cerium(IV) phosphates: biocompatible ROS-scavenging sunscreens. J Mater Chem B 2022; 10:1775-1785. [PMID: 35108720 DOI: 10.1039/d1tb02604f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports on a comprehensive study of the UV-shielding properties (namely, the sun protection factor and the factor of protection against UV-A radiation) and cytotoxicity (including photocytotoxicity) of amorphous and crystalline cerium(IV) phosphates. It has been shown that cerium(IV) phosphate NH4Ce2(PO4)3 is characterised by UV-shielding properties that are comparable to those of nanocrystalline TiO2 and CeO2. Moreover, cerium(IV) phosphates did not show toxicity towards cell cultures of NCTC L929 line mouse fibroblasts and human mesenchymal stem cells, in a wide range of concentrations, and even enhanced the proliferative activity of the latter. In a model study of the photoprotective properties of cerium(IV) phosphates on human mesenchymal stem cells, the pronounced protective effect of NH4Ce2(PO4)3 was observed, which was comparable to the shielding action of nanocrystalline CeO2. The results have shown that tetravalent cerium phosphates can be considered as promising UV-filters for sunscreen applications.
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Affiliation(s)
- T O Kozlova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia.
| | - A L Popov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - I V Kolesnik
- Lomonosov Moscow State University, Materials Science Department, Moscow 119991, Russia
| | - D D Kolmanovich
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - A E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia.
| | - A B Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv D0368, Ukraine
| | - V K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia.
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19
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Ermakov AM, Kamenskikh KA, Ermakova ON, Blagodatsky AS, Popov AL, Ivanov VK. Planarians as an In Vivo Experimental Model for the Study of New Radioprotective Substances. Antioxidants (Basel) 2021; 10:antiox10111763. [PMID: 34829634 PMCID: PMC8615267 DOI: 10.3390/antiox10111763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/27/2021] [Accepted: 10/30/2021] [Indexed: 11/16/2022] Open
Abstract
Ionising radiation causes the death of the most actively dividing cells, thus leading to depletion of the stem cell pool. Planarians are invertebrate flatworms that are unique in that their stem cells, called neoblasts, constantly replace old, damaged, or dying cells. Amenability to efficient RNAi treatments, the rapid development of clear phenotypes, and sensitivity to ionising radiation, combined with new genomic technologies, make planarians an outstanding tool for the discovery of potential radioprotective agents. In this work, using the well-known antioxidant N-acetylcysteine, planarians are, for the first time, shown to be an excellent model system for the fast and effective screening of novel radioprotective and radio-sensitising substances. In addition, a panel of measurable parameters that can be used for the study of radioprotective effects on this model is suggested.
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Affiliation(s)
- Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.M.E.); (K.A.K.); (O.N.E.); (A.S.B.); (A.L.P.)
| | - Kristina A. Kamenskikh
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.M.E.); (K.A.K.); (O.N.E.); (A.S.B.); (A.L.P.)
| | - Olga N. Ermakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.M.E.); (K.A.K.); (O.N.E.); (A.S.B.); (A.L.P.)
| | - Artem S. Blagodatsky
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.M.E.); (K.A.K.); (O.N.E.); (A.S.B.); (A.L.P.)
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.M.E.); (K.A.K.); (O.N.E.); (A.S.B.); (A.L.P.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
- Correspondence:
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20
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Sozarukova MM, Proskurnina EV, Popov AL, Kalinkin AL, Ivanov VK. New facets of nanozyme activity of ceria: lipo- and phospholipoperoxidase-like behaviour of CeO 2 nanoparticles. RSC Adv 2021; 11:35351-35360. [PMID: 35493182 PMCID: PMC9043017 DOI: 10.1039/d1ra06730c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022] Open
Abstract
Cerium dioxide nanoparticles have a special place among engineered nanomaterials due to the wide range of their enzyme-like activities. They possess SOD-, catalase- and peroxidase-like properties, as well as recently discovered phosphatase-, photolyase-, phospholipase- and nuclease-like properties. Advancing biomedical applications of CeO2-based nanozymes requires an understanding of the features and mechanisms of the redox activity of CeO2 nanoparticles when entering the vascular bed, especially when interacting with lipid-protein supramolecular complexes (biomembranes and lipoproteins). In this paper, CeO2 nanoparticles are shown to possess two further types of nanozyme activity, namely lipo- and phospholipoperoxidase-like activities. Compared to a strong blood prooxidant, hemoglobin, CeO2 nanoparticles act as a mild oxidising agent, since they exhibit a 106 times lower, and 20 times lower, prooxidant capacity towards linoleic acid and phosphatidylcholine hydroperoxides, respectively. Compared to the widespread pharmacological preparation of iron, Fe(iii) carboxymaltose (antianemic preparation Ferinject®), the prooxidant capacity of CeO2 nanoparticles towards lipid and phospholipid substrates has been shown to be 102 times lower, and 4 times higher, respectively. The data obtained on the mechanism of the interaction of nanodisperse CeO2 with the main components of biological membranes, lipids and phospholipids enable the substantial expansion of the scope of biomedical applications of CeO2 nanozymes. CeO2 nanoparticles were shown to possess two novel types of enzyme-like activity, namely lipoperoxidase and phospholipoperoxidase activity.![]()
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Affiliation(s)
- Madina M Sozarukova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Russian Federation
| | | | - Anton L Popov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Russian Federation .,Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences Russian Federation
| | - Alexander L Kalinkin
- Medical Research and Educational Center, Lomonosov Moscow State University Russian Federation
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Russian Federation .,National Research University Higher School of Economics Russian Federation
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21
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Alekseeva OV, Shibaeva VD, Noskov AV, Ivanov VK, Agafonov AV. Enhancing the Thermal Stability of Ionogels: Synthesis and Properties of Triple Ionic Liquid/Halloysite/MCC Ionogels. Molecules 2021; 26:6198. [PMID: 34684781 PMCID: PMC8538352 DOI: 10.3390/molecules26206198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/04/2021] [Accepted: 10/09/2021] [Indexed: 11/17/2022] Open
Abstract
In this study, an ionic liquid (IL), 1-butyl-3-methylimidazolium acetate, was used to prepare ionogels with microcrystalline cellulose (MCC) and halloysite (Hal). SEM, XRD, TG, DSC, FTIR spectroscopy, conductometry and mechanical tests were used to study the morphology, structure, thermal behaviour and electrophysical and mechanical characteristics of synthesised ionogels. XRD analysis showed a slight decrease in the interlayer space of halloysite in ionogels containing MCC, which may have been associated with the removal of residual water molecules resulting from hydrophilic IL anions and polymer macromolecules. A change in conductivity and glass-transition temperature of the ionic liquid was revealed due to intercalation into halloysite (a confinement effect) and modification with cellulose. For triple IL/Hal/MCC ionogels, the characteristic thermal degradation temperatures were higher than the corresponding values for IL/Hal composites. This indicates that the synthesised IL/Hal/MCC ionogels are characterised by a greater thermal stability than those of IL/Hal systems.
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Affiliation(s)
- Olga V. Alekseeva
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia; (O.V.A.); (V.D.S.); (A.V.A.)
| | - Valeriya D. Shibaeva
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia; (O.V.A.); (V.D.S.); (A.V.A.)
| | - Andrew V. Noskov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia; (O.V.A.); (V.D.S.); (A.V.A.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 117901 Moscow, Russia;
| | - Alexander V. Agafonov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia; (O.V.A.); (V.D.S.); (A.V.A.)
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22
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Ivanov VK, Spirin EV, Menyajlo AN, Chekin SY, Lovachev SS, Korelo AM, Tumanov KA, Solomatin VM. Evaluation of Migration Radiological Equivalence for Dual Component Nuclear Waste in a Deep Geological Repository. Health Phys 2021; 121:193-201. [PMID: 34261891 DOI: 10.1097/hp.0000000000001464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
ABSTRACT The paper is concerned with the issue of achieving the radiological equivalence (the equivalence of radiation risks) of radioactive waste of nuclear reactors and corresponding mass of natural uranium, taking into account the different migration ability of radionuclides in geological formations and soil. This migration radiological equivalence is being investigated for the deep burial of radioactive waste in the case of the development of a two-component nuclear power system with the concurrent use of thermal neutron reactors and fast neutron reactors. Calculations were performed of radiation doses and radiation risks of cancer death arising from consumption of drinking water from a well above a disposal site. The radiation risk relating to a two-component nuclear power system is lower than that from natural uranium; i.e., after reaching the radiological equivalence (100 y of storage) over the timescale of 109 y, the principle of migration radiological equivalence is satisfied. It would take 106 y after radioactive waste disposal to reach the migration radiological equivalence if only thermal reactors were operated. As regards consumption of well drinking water, the radiation risk does not exceed 10-5 y-1 for a two-component nuclear power system, while being 10-3 y-1 (socially unacceptable level) for a power system using only thermal reactors. Radionuclides 241Am, 239Pu, and 240Pu in drinking water make the main contribution to the doses and radiation risks of people for 104 y after the disposal of radioactive waste.
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Affiliation(s)
| | | | - A N Menyajlo
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obnins
| | - S Y Chekin
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obnins
| | - S S Lovachev
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obnins
| | - A M Korelo
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obnins
| | - K A Tumanov
- A. Tsyb Medical Radiological Research Center, branch of NMRRC of Ministry of Health, Russian Federation, Obnins
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23
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Popov AL, Abakumov MA, Savintseva IV, Ermakov AM, Popova NR, Ivanova OS, Kolmanovich DD, Baranchikov AE, Ivanov VK. Biocompatible dextran-coated gadolinium-doped cerium oxide nanoparticles as MRI contrast agents with high T 1 relaxivity and selective cytotoxicity to cancer cells. J Mater Chem B 2021; 9:6586-6599. [PMID: 34369536 DOI: 10.1039/d1tb01147b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Gd-based complexes are widely used as magnetic resonance imaging (MRI) contrast agents. The safety of previously approved contrast agents is questionable and is being re-assessed. The main causes of concern are possible gadolinium deposition in the brain and the development of systemic nephrogenic fibrosis after repeated use of MRI contrasts. Thus, there is an urgent need to develop a new generation of MRI contrasts that are safe and that have high selectivity in tissue accumulation with improved local contrast. Here, we report on a new type of theranostic MRI contrast, namely dextran stabilised, gadolinium doped cerium dioxide nanoparticles. These ultra-small (4-6 nm) Ce0.9Gd0.1O1.95 nanoparticles have been shown to possess excellent colloidal stability and high r1-relaxivity (3.6 mM-1 s-1). They are effectively internalised by human normal and cancer cells and demonstrate dose-dependent selective cytotoxicity to cancer cells.
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Affiliation(s)
- A L Popov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky av., 31, Moscow 119991, Russia.
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24
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Gofman IV, Nikolaeva AL, Khripunov AK, Ivan’kova EM, Shabunin AS, Yakimansky AV, Romanov DP, Popov AL, Ermakov AM, Solomevich SO, Bychkovsky PM, Baranchikov AE, Ivanov VK. Bacterial Cellulose-Based Nanocomposites Containing Ceria and Their Use in the Process of Stem Cell Proliferation. Polymers (Basel) 2021; 13:polym13121999. [PMID: 34207191 PMCID: PMC8234971 DOI: 10.3390/polym13121999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
A technique for the fabrication of bacterial cellulose-based films with CeO2 nanofiller has been developed. The structural and morphological characteristics of the materials have been studied, their thermal and mechanical properties in dry and swollen states having been determined. The preparation methodology makes it possible to obtain composites with a uniform distribution of nanoparticles. The catalytic effect of ceria, regarding the thermal oxidative destruction of cellulose, has been confirmed by TGA and DTA methods. An increase in CeO2 content led to an increase in the elastic modulus (a 1.27-fold increase caused by the introduction of 5 wt.% of the nanofiller into the polymer) and strength of the films. This effect is explained by the formation of additional links between polymer macro-chains via the nanoparticles’ surface. The materials fabricated were characterized by a limited ability to swell in water. Swelling caused a 20- to 30-fold reduction in the stiffness of the material, the mechanical properties of the films in a swollen state remaining germane to their practical use. The application of the composite films in cell engineering as substrates for the stem cells’ proliferation has been studied. The increase in CeO2 content in the films enhanced the proliferative activity of embryonic mouse stem cells. The cells cultured on the scaffold containing 5 wt.% of ceria demonstrated increased cell survival and migration activity. An analysis of gene expression confirmed improved cultivation conditions on CeO2-containing scaffolds.
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Affiliation(s)
- Iosif V. Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (A.L.N.); (A.K.K.); (E.M.I.); (A.V.Y.)
- Correspondence:
| | - Alexandra L. Nikolaeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (A.L.N.); (A.K.K.); (E.M.I.); (A.V.Y.)
| | - Albert K. Khripunov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (A.L.N.); (A.K.K.); (E.M.I.); (A.V.Y.)
| | - Elena M. Ivan’kova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (A.L.N.); (A.K.K.); (E.M.I.); (A.V.Y.)
| | - Anton S. Shabunin
- H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery, Pushkin, 196603 Saint Petersburg, Russia;
| | - Alexander V. Yakimansky
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (A.L.N.); (A.K.K.); (E.M.I.); (A.V.Y.)
- Institute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, Russia
| | - Dmitriy P. Romanov
- Institute of Silicate Chemistry, Russian Academy of Sciences, 199034 Saint Petersburg, Russia;
| | - Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, 142290 Pushchino, Russia; (A.L.P.); (A.M.E.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
| | - Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, 142290 Pushchino, Russia; (A.L.P.); (A.M.E.)
| | - Sergey O. Solomevich
- Research Institute for Physical and Chemical Problems, Belarusian State University, 220030 Minsk, Belarus; (S.O.S.); (P.M.B.)
| | - Pavel M. Bychkovsky
- Research Institute for Physical and Chemical Problems, Belarusian State University, 220030 Minsk, Belarus; (S.O.S.); (P.M.B.)
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
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25
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Shcherbakov AB, Reukov VV, Yakimansky AV, Krasnopeeva EL, Ivanova OS, Popov AL, Ivanov VK. CeO 2 Nanoparticle-Containing Polymers for Biomedical Applications: A Review. Polymers (Basel) 2021; 13:924. [PMID: 33802821 PMCID: PMC8002506 DOI: 10.3390/polym13060924] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/11/2021] [Accepted: 03/14/2021] [Indexed: 12/16/2022] Open
Abstract
The development of advanced composite biomaterials combining the versatility and biodegradability of polymers and the unique characteristics of metal oxide nanoparticles unveils new horizons in emerging biomedical applications, including tissue regeneration, drug delivery and gene therapy, theranostics and medical imaging. Nanocrystalline cerium(IV) oxide, or nanoceria, stands out from a crowd of other metal oxides as being a truly unique material, showing great potential in biomedicine due to its low systemic toxicity and numerous beneficial effects on living systems. The combination of nanoceria with new generations of biomedical polymers, such as PolyHEMA (poly(2-hydroxyethyl methacrylate)-based hydrogels, electrospun nanofibrous polycaprolactone or natural-based chitosan or cellulose, helps to expand the prospective area of applications by facilitating their bioavailability and averting potential negative effects. This review describes recent advances in biomedical polymeric material practices, highlights up-to-the-minute cerium oxide nanoparticle applications, as well as polymer-nanoceria composites, and aims to address the question: how can nanoceria enhance the biomedical potential of modern polymeric materials?
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Affiliation(s)
- Alexander B. Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine;
| | - Vladimir V. Reukov
- Department of Textiles, Merchandising and Interiors, University of Georgia, Athens, GA, 30602, USA;
| | - Alexander V. Yakimansky
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.V.Y.); (E.L.K.)
| | - Elena L. Krasnopeeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.V.Y.); (E.L.K.)
| | - Olga S. Ivanova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
| | - Anton L. Popov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
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26
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Abramov VO, Abramova AV, Cravotto G, Nikonov RV, Fedulov IS, Ivanov VK. Flow-mode water treatment under simultaneous hydrodynamic cavitation and plasma. Ultrason Sonochem 2021; 70:105323. [PMID: 32911356 PMCID: PMC7786523 DOI: 10.1016/j.ultsonch.2020.105323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/01/2020] [Accepted: 08/27/2020] [Indexed: 05/07/2023]
Abstract
Over the last two decades, the scientific community and industry have made huge efforts to develop environmental protection technologies. In particular, the scarcity of drinking water has prompted the investigation of several physico-chemical treatments, and synergistic effects have been observed in hyphenated techniques. Herein, we report the first example of water treatment under simultaneous hydrodynamic cavitation and plasma discharge with the intense generation of radicals, UV light, shock waves and charged particles. This highly reactive environment is well suited to the bulk treatment of polluted water (i.e. E. coli disinfection and organic pollutant degradation). We have developed a new prototype and have efficiently applied this hybrid technology to water disinfection and the complete degradation of methanol in water with the aim of demonstrating its scalability. We have analyzed the mechanisms of water disinfection under the abovementioned conditions and verified them by measuring cavitation noise spectra and plasma emission spectra. We have also used the degradation of textile dyes and methanol solutions as an indicator for the formation of radicals.
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Affiliation(s)
- Vladimir O Abramov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
| | - Anna V Abramova
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia.
| | - Giancarlo Cravotto
- Department of Drug Science and Technology, University of Turin, via P. Giuria 9, 10125 Turin, Italy; Sechenov First Moscow State Medical University, 8 Trubetskaya ul, 119991 Moscow, Russia.
| | - Roman V Nikonov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
| | - Igor S Fedulov
- Moscow Polytechnic University, Bolshaya Semyonovskaya ul., 38, 107023 Moscow, Russia
| | - Vladimir K Ivanov
- Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskiy prospekt 31, 119991 Moscow, Russia
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27
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Agafonov AV, Kraev AS, Egorova AA, Baranchikov AE, Kozyukhin SA, Ivanov VK. Polydimethylsiloxane Elastomers Filled with Rod-Like α-MnO 2 Nanoparticles: An Interplay of Structure and Electrorheological Performance. Polymers (Basel) 2020; 12:E2810. [PMID: 33260930 PMCID: PMC7759881 DOI: 10.3390/polym12122810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 11/16/2022] Open
Abstract
For the first time, electroactive nanocomposite elastomers based on polydimethylsiloxane and filled with rod-like α-MnO2 nanoparticles have been obtained. The curing of the filled elastomer in an electric field, resulting in the ordering of the α-MnO2 particles, had a significant effect on the degree of polymer crosslinking, as well as on the electrorheological characteristics of the nanocomposites obtained through this process, namely the values of the storage and loss moduli. The dielectric spectra of filled elastomers in the frequency range 25-106 Hz were analysed in terms of interfacial relaxation processes. It has been shown, for the first time, that the application of an electric field leads to a decrease in the value of the Payne effect in composite elastomers. Analysis of the rheological effect in the obtained materials has demonstrated the possibility of designing highly efficient electrorheological elastomers that change their elastic properties by 4.3 times in electric fields of up to 2 kV/mm.
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Affiliation(s)
- Alexander V. Agafonov
- Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 153045 Ivanovo, Russia; (A.V.A.); (A.S.K.)
- Department of Chemistry, National Research Tomsk State University, 634050 Tomsk, Russia
| | - Anton S. Kraev
- Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 153045 Ivanovo, Russia; (A.V.A.); (A.S.K.)
| | - Anastasia A. Egorova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.A.E.); (A.E.B.); (S.A.K.)
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.A.E.); (A.E.B.); (S.A.K.)
| | - Sergey A. Kozyukhin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.A.E.); (A.E.B.); (S.A.K.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.A.E.); (A.E.B.); (S.A.K.)
- Department of Chemistry, National Research University Higher School of Economics, 101000 Moscow, Russia
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Kozlova TO, Mironov AV, Istomin SY, Birichevskaya KV, Gippius AA, Zhurenko SV, Shatalova TB, Baranchikov AE, Ivanov VK. Cover Feature: Meet the Cerium(IV) Phosphate Sisters: Ce
IV
(OH)PO
4
and Ce
IV
2
O(PO
4
)
2
(Chem. Eur. J. 53/2020). Chemistry 2020. [DOI: 10.1002/chem.202003597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Taisiya O. Kozlova
- Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninsky prospect 31 119991 Moscow Russia
| | - Andrey V. Mironov
- Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
| | - Sergey Y. Istomin
- Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
- National Research University Higher School of Economics 20 Myasnitskaya str. Moscow 101000 Russia
| | - Karina V. Birichevskaya
- Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninsky prospect 31 119991 Moscow Russia
| | - Andrey A. Gippius
- Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
- Lebedev Physical Institute Russian Academy of Sciences Leninsky prospect 53 119991 Moscow Russia
| | - Sergey V. Zhurenko
- Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
- Lebedev Physical Institute Russian Academy of Sciences Leninsky prospect 53 119991 Moscow Russia
| | | | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninsky prospect 31 119991 Moscow Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninsky prospect 31 119991 Moscow Russia
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Agafonov AV, Kraev AS, Baranchikov AE, Ivanov VK. Electrorheological Properties of Polydimethylsiloxane/TiO 2-Based Composite Elastomers. Polymers (Basel) 2020; 12:polym12092137. [PMID: 32962065 PMCID: PMC7569977 DOI: 10.3390/polym12092137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 02/08/2023] Open
Abstract
Electrorheological elastomers based on polydimethylsiloxane filled with hydrated titanium dioxide with a particle size of 100-200 nm were obtained by polymerization of the elastomeric matrix, either in the presence, or in the absence, of an external electric field. The viscoelastic and dielectric properties of the obtained elastomers were compared. Analysis of the storage modulus and loss modulus of the filled elastomers made it possible to reveal the influence of the electric field on the Payne effect in electrorheological elastomers. The elastomer vulcanized in the electric field showed high values of electrorheological sensitivity, 250% for storage modulus and 1100% for loss modulus. It was shown, for the first time, that vulcanization of filled elastomers in the electric field leads to a significant decrease in the degree of crosslinking in the elastomer. This effect should be taken into account in the design of electroactive elastomeric materials.
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Affiliation(s)
- Alexander V. Agafonov
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia;
- Correspondence:
| | - Anton S. Kraev
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia;
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
- Higher School of Economics, National Research University, 101000 Moscow, Russia
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30
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Kozlova TO, Mironov AV, Istomin SY, Birichevskaya KV, Gippius AA, Zhurenko SV, Shatalova TB, Baranchikov AE, Ivanov VK. Meet the Cerium(IV) Phosphate Sisters: Ce IV (OH)PO 4 and Ce IV 2 O(PO 4 ) 2. Chemistry 2020; 26:12188-12193. [PMID: 32608019 DOI: 10.1002/chem.202002527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/16/2020] [Indexed: 11/10/2022]
Abstract
Two new cerium(IV) phosphates were obtained: cerium(IV) hydroxidophosphate, Ce(OH)PO4 , and cerium(IV) oxidophosphate, Ce2 O(PO4 )2 , which were shown to complement the classes of isostructural compounds M(OH)PO4 and R2 O(PO4 )2 , where M=Th, U and R=Th, U, Np, Zr. Ce2 O(PO4 )2 oxidophosphate is formed by elimination of H2 O from the crystal structure of Ce(OH)PO4 during its thermal decomposition. The structures of Ce(OH)PO4 and Ce2 O(PO4 )2 are related to each other with the same Cmce space group and similar unit cell parameters (a=6.9691(3) Å, b=9.0655(4) Å, c=12.2214(4) Å, V=772.13(8) Å3 , Z=8; a=7.0220(4) Å, b=8.9894(5) Å, c=12.544(1) Å, V=791.8(1) Å3 , Z=4, respectively).
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Affiliation(s)
- Taisiya O Kozlova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prospect 31, 119991, Moscow, Russia
| | - Andrey V Mironov
- Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
| | - Sergey Y Istomin
- Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia.,National Research University Higher School of Economics, 20 Myasnitskaya str., Moscow, 101000, Russia
| | - Karina V Birichevskaya
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prospect 31, 119991, Moscow, Russia
| | - Andrey A Gippius
- Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia.,Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prospect 53, 119991, Moscow, Russia
| | - Sergey V Zhurenko
- Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia.,Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prospect 53, 119991, Moscow, Russia
| | | | - Alexander E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prospect 31, 119991, Moscow, Russia
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prospect 31, 119991, Moscow, Russia
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31
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Nikolaeva AL, Gofman IV, Yakimansky AV, Ivan’kova EM, Abalov IV, Baranchikov AE, Ivanov VK. Polyimide-Based Nanocomposites with Binary CeO 2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties. Polymers (Basel) 2020; 12:E1952. [PMID: 32872303 PMCID: PMC7565313 DOI: 10.3390/polym12091952] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/13/2020] [Accepted: 08/24/2020] [Indexed: 11/16/2022] Open
Abstract
To design novel polymer materials with optimal properties relevant to industrial usage, it would seem logical to modify polymers with reportedly good functionality, such as polyimides (PIs). We have created a set of PI-based nanocomposites containing binary blends of CeO2 with carbon nanoparticles (nanocones/discs or nanofibres), to improve a number of functional characteristics of the PIs. The prime novelty of this study is in a search for a synergistic effect amidst the nanofiller moieties regarding the thermal and the mechanical properties of PIs. In this paper, we report on the structure, thermal, and mechanical characteristics of the PI-based nanocomposites with binary fillers. We have found that, with a certain composition, the functional performance of a material can be substantially improved. For example, a PI containing SO2-groups in its macrochains not only had its thermal stability enhanced (by ~20 °C, 10% weight loss up to 533 °C) but also had its stiffness increased by more than 10% (Young's modulus as high as 2.9-3.0 GPa) in comparison with the matrix PI. In the case of a PI with no sulfonic groups, binary fillers increased stiffness of the polymer above its glass transition temperature, thereby widening its working temperature range. The mechanisms of these phenomena are discussed. Thus, this study could contribute to the design of new composite materials with controllable and improved functionality.
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Affiliation(s)
- Alexandra L. Nikolaeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (I.V.G.); (A.V.Y.); (E.M.I.); (I.V.A.)
| | - Iosif V. Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (I.V.G.); (A.V.Y.); (E.M.I.); (I.V.A.)
| | - Alexander V. Yakimansky
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (I.V.G.); (A.V.Y.); (E.M.I.); (I.V.A.)
- Institute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, Russia
| | - Elena M. Ivan’kova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (I.V.G.); (A.V.Y.); (E.M.I.); (I.V.A.)
| | - Ivan V. Abalov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; (I.V.G.); (A.V.Y.); (E.M.I.); (I.V.A.)
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (A.E.B.); (V.K.I.)
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Ivanov VK, Karpenko SV, Kashcheev VV, Lovachev SS, Kashcheeva PV, Shchukina NV, Tumanov KA, Kochergina EV, Maksioutov MA. Relationship between follow-up periods and the low-dose ranges with statistically significant radiation-induced risk of all solid cancers in the Russian cohort of Chernobyl emergency workers. Radiat Environ Biophys 2020; 59:415-421. [PMID: 32468176 DOI: 10.1007/s00411-020-00850-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Radiation-induced risks for all solid cancer incidence and mortality were studied in the cohort of Russian Chernobyl emergency workers. The cohort included 69,440 persons with documented individual radiation dose accrued over the time of working in the Chernobyl zone. The mean age at entry into the zone of recovery operations was 33.9 years and accumulated radiation dose was 132.9 mGy. A total of 6981 solid cancer incident cases and 4272 deaths occurred in this cohort from 1992 to 2017. Three follow-up periods were studied: 1992-2009, 1992-2013, and 1992-2017. For each follow-up period, the lowest dose range with statistically significant (p < 0.05) radiation-induced risk of all solid cancer incidence and mortality were obtained. For the incidence of all solid cancer during the follow-up period 1992-2009, this lowest dose range was estimated to be 0-250 mGy with an excess relative risk per dose of ERR Gy-1 = 0.51 and 95% confidence interval (CI) (0.02; 1.05) Gy-1. For the period 1992-2013, the lowest dose range was 0-175 mGy with ERR Gy-1 = 0.85 (95% CI 0.03; 1.78), while for the whole follow-up period 1992-2017, it was 0-175 mGy with ERR Gy-1 = 0.81 (95% CI 0.08; 1.62). For mortality from all solid cancers during the follow-up period 1992-2009, the lowest dose range with statistically significant radiation-induced risk was estimated to be 0-225 mGy with ERR Gy-1 = 1.07 (95% CI 0.31; 0.97). For the period 1992-2013, the lowest dose range was 0-225 mGy with ERR Gy-1 = 0.86 (95% CI 0.23; 1.58), while for the whole follow-up period 1992-2017, the lowest dose range was 0-200 mGy with ERR Gy-1 = 0.82 (95% CI 0.10; 1.65). Thus, it was found that the minimal level of significant exposure (Dmin), for which a statistically significant radiation-induced risk of all solid cancers was obtained for Russian emergency workers (with individual doses of 0 - Dmin), decreases with increasing duration of cohort observation, both for cancer incidence and mortality.
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Affiliation(s)
- V K Ivanov
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia.
| | - S V Karpenko
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - V V Kashcheev
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - S S Lovachev
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - P V Kashcheeva
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - N V Shchukina
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - K A Tumanov
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - E V Kochergina
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
| | - M A Maksioutov
- A. Tsyb Medical Radiological Research Center (A. Tsyb MRRC), Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolyov Street, 249035, Obninsk, Kaluga Region, Russia
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Kozlova T, Baranchikov AE, Kozlov DA, Gavrikov AV, Kopitsa GP, Yapryntsev AD, Ustinovich KB, Chennevière A, Ivanov VK. 1D Ceric Hydrogen Phosphate Aerogels: Noncarbonaceous Ultraflyweight Monolithic Aerogels. ACS Omega 2020; 5:17592-17600. [PMID: 32715244 PMCID: PMC7377271 DOI: 10.1021/acsomega.0c02061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Ceric hydrogen phosphate gels possess a very unique spatial organization, being nearly amorphous materials with a fibrous structure. Using a sol-gel approach, we succeeded in preparing bulky gels containing as much as 20,000 molecules of water per cerium atom. Supercritical treatment of these gels made it possible to obtain the first ultralight monolithic noncarbonaceous aerogels with a density as low as 1 mg/cm3.
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Affiliation(s)
- Taisiya
O. Kozlova
- Lomonosov
Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Alexander E. Baranchikov
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Daniil A. Kozlov
- Lomonosov
Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Andrey V. Gavrikov
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Gennady P. Kopitsa
- Petersburg
Nuclear Physics Institute of National Research Centre “Kurchatov
Institute”, Leningradskaya oblast, mkr. Orlova roshcha, 1, Gatchina 188300, Russia
- Grebenshchikov
Institute of Silicate Chemistry of the Russian Academy of Sciences, Naberezhnaya Adm. Makarova, 2, St. Petersburg, 199034, Russia
| | - Alexey D. Yapryntsev
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Konstantin B. Ustinovich
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
| | - Alexis Chennevière
- Université
Paris Saclay, Laboratoire Léon Brillouin, CEA-CNRS, CEA Saclay, Cedex, Gif-sur-Yvette 91191, France
| | - Vladimir K. Ivanov
- Kurnakov
Institute of General and Inorganic Chemistry of the Russian Academy
of Sciences, Leninsky prospect, 31, Moscow, 119991, Russia
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Yapryntsev AD, Baranchikov AE, Ivanov VK. Layered rare-earth hydroxides: a new family of anion-exchangeable layered inorganic materials. Russ Chem Rev 2020. [DOI: 10.1070/rcr4920] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lukin AV, Lukina GI, Volkov AV, Baranchikov AE, Ivanov VK, Prokopov AA. Morphometry Results of Formed Osteodefects When Using Nanocrystalline CeO 2 in the Early Stages of Regeneration. Int J Dent 2019; 2019:9416381. [PMID: 32082380 PMCID: PMC7012226 DOI: 10.1155/2019/9416381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 12/05/2019] [Indexed: 01/28/2023] Open
Abstract
This paper studies of the use of nanocrystalline cerium dioxide with artificially formed bone tissue defects. The results of morphometry confirmed the antialterative effect in the early stages of the reparative process of damaged bone tissue. When using calcium hydroxide with nanodispersed cerium dioxide, the nature of osteogenesis should be characterized as activated. In case of damage to the dentin of the roots of the teeth, dentinogenesis in presence of CeO2 occurs with the formation of a combined dentin and bone regenerates. Little or no studies of dentinogenesis in presence of CeO2 were performed by other researchers.
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Affiliation(s)
- Anton V. Lukin
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Galina I. Lukina
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Alexey V. Volkov
- N. N. Priorov National Medical Research Center of Traumatology and Orthopedics, Moscow, Russia
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Alexey A. Prokopov
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
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Ermakov AM, Ermakova ON, Popov AL, Manokhin AA, Ivanov VK. Opposite effects of low intensity light of different wavelengths on the planarian regeneration rate. J Photochem Photobiol B 2019; 202:111714. [PMID: 31830733 DOI: 10.1016/j.jphotobiol.2019.111714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/11/2019] [Accepted: 11/14/2019] [Indexed: 02/06/2023]
Abstract
Planarian freshwater flatworms have the unique ability to regenerate due to stem cell activity. The process of regeneration is extremely sensitive to various factors, including light radiation. Here, the effect of low-intensity LED light of different wavelengths on regeneration, stem cell proliferation and gene expression associated with these processes was studied. LED matrices with different wavelengths (red (λmax = 635 nm), green (λmax = 520 nm) and blue (λmax = 463 nm), as well as LED laser diodes (red (λmax = 638.5 nm), green (λmax = 533 nm) and blue (λmax = 420 nm), were used in the experiments. Computer-assisted morphometry, whole-mount immunocytochemical study and RT-PCR were used to analyze the biological effects of LED light exposure on the planarian regeneration in vivo. It was found that a one-time exposure of regenerating planarians with low-intensity red light diodes stimulated head blastema growth in a dose-dependent manner (up to 40%). The green light exposure of planarians resulted in the opposite effect, showing a reduced head blastema growth rate by up to 21%. The blue light exposure did not lead to any changes in the rate of head blastema growth. The maximum effects of light exposure were observed at a dose of 175.2 mJ/cm2. No significant differences were revealed in the dynamics of neoblasts' (planarian stem cells) proliferation under red and green light exposure. However, the RT-PCR gene expression analysis of 46 wound-induced genes revealed their up-regulation upon red LED light exposure, and down-regulation upon green light exposure. Thus, we have demonstrated that the planarian regeneration process is rather sensitive to the effects of low-intensity light radiation of certain wavelengths, the biological activity of red and green light being dictated by the different expression of the genes regulating transcriptional activity.
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Affiliation(s)
- A M Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - O N Ermakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - A L Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - A A Manokhin
- Institute of Cell Biophysics, Russian Academy of Sciences, Pushchino, Moscow Oblast 142290, Russia
| | - V K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
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Popov AL, Han B, Ermakov AM, Savintseva IV, Ermakova ON, Popova NR, Shcherbakov AB, Shekunova TO, Ivanova OS, Kozlov DA, Baranchikov AE, Ivanov VK. PVP-stabilized tungsten oxide nanoparticles: pH sensitive anti-cancer platform with high cytotoxicity. Mater Sci Eng C Mater Biol Appl 2019; 108:110494. [PMID: 31924007 DOI: 10.1016/j.msec.2019.110494] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/05/2019] [Accepted: 11/25/2019] [Indexed: 10/25/2022]
Abstract
Photochromic tungsten oxide (WO3) nanoparticles stabilized by polyvinylpyrrolidone (PVP) were synthesized to evaluate their potential for biomedical applications. PVP-stabilized tungsten oxide nanoparticles demonstrated a highly selective cytotoxic effect on normal and cancer cells in vitro. WO3 nanoparticles were found to induce substantial cell death in osteosarcoma cells (MNNG/HOS cell line) with a half-maximal inhibitory concentration (IC50) of 5 mg/mL, while producing no, or only minor, toxicity in healthy human mesenchymal stem cells (hMSc). WO3 nanoparticles induced intracellular oxidative stress, which led to apoptosis type cell death. The selective anti-cancer effects of WO3 nanoparticles are due to the pH sensitivity of tungsten oxide and its capability of reactive oxygen species (ROS) generation, which is expressed in the modulation of genes involved in reactive oxygen species metabolism, mitochondrial dysfunction, and apoptosis.
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Affiliation(s)
- Anton L Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - Bingyuan Han
- Jiangsu University of Technology, Zhenjiang 212013, China
| | - Artem M Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - Irina V Savintseva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - Olga N Ermakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - Nelly R Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region 142290, Russia
| | - Alexander B Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv D0368, Ukraine
| | - Taisiya O Shekunova
- Lomonosov Moscow State University, Moscow 119991, Russia; Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Olga S Ivanova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Daniil A Kozlov
- Lomonosov Moscow State University, Moscow 119991, Russia; Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexander E Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia; National Research Tomsk State University, Tomsk 634050, Russia.
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Rasskazova LA, Zhuk IV, Korotchenko NM, Brichkov AS, Chen YW, Paukshtis EA, Ivanov VK, Kurzina IA, Kozik VV. Synthesis of Magnesium- and Silicon-modified Hydroxyapatites by Microwave-Assisted Method. Sci Rep 2019; 9:14836. [PMID: 31619688 PMCID: PMC6795999 DOI: 10.1038/s41598-019-50777-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 09/19/2019] [Indexed: 01/31/2023] Open
Abstract
Nanopowders of hydroxyapatite (HA), modified by magnesium (MgHA) and by silicon (SiHA) were obtained by liquid-phase microwave synthesis method. X-ray diffraction and IR spectroscopy results showed that Mg2+ and SiO44- ions were present in the synthesized products both as secondary phases and as part of the HA phase. Whitlockite was found in the magnesium-modified HA (MgHA) and larnite was found in the silicon-modified HA (SiHA); ion substitution for both materials resulted in solid solutions. In the synthesized samples of modified HA, the increase of particle size of powders was in the order HA < SiHA < MgHA, which was calculated through data specific surface area and measured pycnometric density of the powders. The Lewis acid sites (Ca2+, Mg2+, Si4+) were present using spectral probes on the surface of the samples of HA, MgHA, and SiHA, and the acidity of these sites decreased in the order SiHA > MgHA > HA. The rates of calcium phosphate layer deposition on the surface of these materials at 37 °C in the model simulated body fluid solution showed similar dependence.
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Affiliation(s)
| | - Ilya V Zhuk
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
| | | | - Anton S Brichkov
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia.
| | - Yu-Wen Chen
- Department of Chemical Engineering, National Central University, Jhongli, 32001, Taiwan.
| | - Evgeniy A Paukshtis
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
| | - Vladimir K Ivanov
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
| | - Irina A Kurzina
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
| | - Vladimir V Kozik
- National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
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Plakhova TV, Romanchuk AY, Butorin SM, Konyukhova AD, Egorov AV, Shiryaev AA, Baranchikov AE, Dorovatovskii PV, Huthwelker T, Gerber E, Bauters S, Sozarukova MM, Scheinost AC, Ivanov VK, Kalmykov SN, Kvashnina KO. Towards the surface hydroxyl species in CeO 2 nanoparticles. Nanoscale 2019; 11:18142-18149. [PMID: 31555787 DOI: 10.1039/c9nr06032d] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Understanding the complex chemistry of functional nanomaterials is of fundamental importance. Controlled synthesis and characterization at the atomic level is essential to gain deeper insight into the unique chemical reactivity exhibited by many nanomaterials. Cerium oxide nanoparticles have many industrial and commercial applications, resulting from very strong catalytic, pro- and anti-oxidant activity. However, the identity of the active species and the chemical mechanisms imparted by nanoceria remain elusive, impeding the further development of new applications. Here, we explore the behavior of cerium oxide nanoparticles of different sizes at different temperatures and trace the electronic structure changes by state-of-the-art soft and hard X-ray experiments combined with computational methods. We confirm the absence of the Ce(iii) oxidation state at the surface of CeO2 nanoparticles, even for particles as small as 2 nm. Synchrotron X-ray absorption experiments at Ce L3 and M5 edges, combined with X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and small angle X-ray scattering (SAXS) and theoretical calculations demonstrate that in addition to the nanoceria charge stability, the formation of hydroxyl groups at the surface profoundly affects the chemical performance of these nanomaterials.
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Affiliation(s)
- Tatiana V Plakhova
- Lomonosov Moscow State University, Department of Chemistry, Leninskije Gory 1, Moscow, Russia
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40
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Garshev AV, Ivanov VK, Krotova AA, Filatova DG, Konstantinova EA, Naberezhnyi DO, Khmelevsky NO, Marikutsa AV, Kots PA, Smirnov AV, Rumyantseva MN, Gaskov AM, Krivetskiy VV. Enhancement of Lewis Acidity of Cr-Doped Nanocrystalline SnO 2 : Effect on Surface NH 3 Oxidation and Sensory Detection Pattern. Chemphyschem 2019; 20:1985-1996. [PMID: 31190363 DOI: 10.1002/cphc.201900192] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/08/2019] [Indexed: 11/06/2022]
Abstract
Understanding ammonia oxidation over metal oxide surfaces is crucial for improving its detection with resistive type gas sensors. Formation of NOx during this process makes sensor response and calibration unstable. Cr-doping of nanocrystalline metal oxides has been reported to suppress NO2 sensitivity and improve response towards NH3 , however the exact mechanism of such chromium action remained unknown. Herein, by using EPR spectroscopy we demonstrate formation of Cr(VI) lattice defects on the surface of nanocrystalline Cr-doped SnO2 . Enhancement of Cr-doped SnO2 surface acidity and ammonia adsorption as a result has been revealed by using in situ IR spectroscopy. Moreover, a decrease in concentration of free electrons in the conduction band has been shown as a result of substitutional Cr(III) defects formation. Weaker NOx chemisorption during ammonia oxidation over SnO2 surface after Cr doping has been found with the use of mass-spectrometry assisted NH3 thermo-programmed desorption. The given example of surface acidity adjustment and electronic configuration by means of doping may find use in the design of new gas-sensing metal oxide materials.
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Affiliation(s)
- Alexey V Garshev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky pr., Moscow, 119991, Russia
| | - Alina A Krotova
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Darya G Filatova
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Elizaveta A Konstantinova
- Department of Physics, M. V. Lomonosov Moscow State University, 1/2 Leninskie Gory, 119991, Moscow, Russia.,National Research Center Kurchatov Institute, Kurchatov Square 1, 123182, Moscow, Russia.,Department of Nano-, Bio-, Information Technology and Cognitive Science, Moscow Institute of Physics and Technology, Institutskij 9, 141701, Dolgoprudny, Moscow Region, Russia
| | - Daniil O Naberezhnyi
- Faculty of Materials Science, M. V. Lomonosov Moscow State University, Leninskie Gory 1 bd. 73, 119991, Moscow, Russia
| | | | - Artem V Marikutsa
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Pavel A Kots
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Andrey V Smirnov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Marina N Rumyantseva
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Alexander M Gaskov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
| | - Valeriy V Krivetskiy
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991, Moscow, Russia
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41
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Yapryntsev AD, Ustinovich KB, Rodina AA, Lebedev VA, Pokrovskiy OI, Yorov KE, Gavrikov AV, Baranchikov AE, Ivanov VK. Exfoliation of layered yttrium hydroxide by rapid expansion of supercritical suspensions. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Semenova AA, Savilov SV, Baranchikov AE, Ivanov VK, Goodilin EA. Skeleton pseudomorphs of nanostructured silver for the surface-enhanced Raman spectroscopy. Mendeleev Communications 2019. [DOI: 10.1016/j.mencom.2019.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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43
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Shekunova TO, Istomin SY, Mironov AV, Baranchikov AE, Yapryntsev AD, Galstyan AA, Simonenko NP, Gippius AA, Zhurenko SV, Shatalova TB, Skogareva LS, Ivanov VK. Crystallization Pathways of Cerium(IV) Phosphates Under Hydrothermal Conditions: A Search for New Phases with a Tunnel Structure. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Taisiya O. Shekunova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
- Lomonosov Moscow State University; Moscow Russia
| | | | | | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
- Lomonosov Moscow State University; Moscow Russia
| | - Alexey D. Yapryntsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
| | | | - Nikolay P. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
| | - Andrey A. Gippius
- Lomonosov Moscow State University; Moscow Russia
- Lebedev Physical Institute of the Russian Academy of Sciences; 119991 Moscow Russia
| | - Sergey V. Zhurenko
- Lomonosov Moscow State University; Moscow Russia
- Lebedev Physical Institute of the Russian Academy of Sciences; 119991 Moscow Russia
| | | | - Lyudmila S. Skogareva
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Moscow Russia
- National Research Tomsk State University; Tomsk Russia
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Medved'ko AV, Dalinger AI, Nuriev VN, Semashko VS, Filatov AV, Ezhov AA, Churakov AV, Howard JAK, Shiryaev AA, Baranchikov AE, Ivanov VK, Vatsadze SZ. Supramolecular Organogels Based on N-Benzyl, N'-Acylbispidinols. Nanomaterials (Basel) 2019; 9:E89. [PMID: 30641896 PMCID: PMC6359647 DOI: 10.3390/nano9010089] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 12/24/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022]
Abstract
The acylation of unsymmetrical N-benzylbispidinols in aromatic solvents without an external base led to the formation of supramolecular gels, which possess different thicknesses and degrees of stability depending on the substituents in para-positions of the benzylic group as well as on the nature of the acylating agent and of the solvent used. Structural features of the native gels as well as of their dried forms were studied by complementary techniques including Fourier-transform infrared (FTIR) and attenuated total reflection (ATR) spectroscopy, atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and small-angle X-ray scattering and diffraction (SAXS). Structures of the key crystalline compounds were established by X-ray diffraction. An analysis of the obtained data allowed speculation on the crucial structural and condition factors that governed the gel formation. The most important factors were as follows: (i) absence of base, either external or internal; (ii) presence of HCl; (iii) presence of carbonyl and hydroxyl groups to allow hydrogen bonding; and (iv) presence of two (hetero)aromatic rings at both sides of the molecule. The hydrogen bonding involving amide carbonyl, hydroxyl at position 9, and, very probably, ammonium N-H⁺ and Cl- anion appears to be responsible for the formation of infinite molecular chains required for the first step of gel formation. Subsequent lateral cooperation of molecular chains into fibers occurred, presumably, due to the aromatic π-π-stacking interactions. Supercritical carbon dioxide drying of the organogels gave rise to aerogels with morphologies different from that of air-dried samples.
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Affiliation(s)
- Alexey V Medved'ko
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | | | - Vyacheslav N Nuriev
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Vera S Semashko
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Andrei V Filatov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia.
| | - Alexander A Ezhov
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia.
| | - Andrei V Churakov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia.
| | | | - Andrey A Shiryaev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia.
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, 119017 Moscow, Russia.
| | - Alexander E Baranchikov
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia.
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia.
- Faculty of Material Science, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Sergey Z Vatsadze
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
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45
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Abstract
Under hydrothermal conditions, the formation of the brookite phase occurs due to the oriented attachment of anatase particles with subsequent recrystallization.
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Affiliation(s)
- Irina V. Kolesnik
- Lomonosov Moscow State University
- Moscow
- Russia
- Kurnakov Institute of General and Inorganic Chemistry of RAS
- Moscow
| | - Daniil A. Kozlov
- Lomonosov Moscow State University
- Moscow
- Russia
- Kurnakov Institute of General and Inorganic Chemistry of RAS
- Moscow
| | | | - Alexey V. Garshev
- Lomonosov Moscow State University
- Moscow
- Russia
- Baikov Institute of Metallurgy and Material Science RAS
- Moscow
| | - Vladimir K. Ivanov
- Lomonosov Moscow State University
- Moscow
- Russia
- Kurnakov Institute of General and Inorganic Chemistry of RAS
- Moscow
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Ivanov VK, Kashcheev VV, Maksioutov MA, Tumanov KA, Chekin SY, Kashcheeva PV, Kaprin AD, Ivanov SA, Seleva NG. CLINICAL AND DOSIMETRIC INFORMATION TO SUPPORT LONG-TERM COHORT STUDY OF CHERNOBYL CLEAN-UP WORKERS IN RUSSIA. Radiat Prot Dosimetry 2018; 182:163-169. [PMID: 30169871 DOI: 10.1093/rpd/ncy133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Indexed: 06/08/2023]
Abstract
The article describes the activities of the Russian National Radiation-Epidemiological Registry (NRER) as the unified federal information system for research and management of individual medical and dosimetry data of people exposed to radiation as a result of the Chernobyl accident and other radiological events. The NRER was created for long-term registration of lifetime changes in the health status of the registered people. We present medical and dosimetry data management process, which is carried out in compliance with approved protocols. The scope and content of the information to be collected from external resources are defined in the documents approved by the Russian Ministry of Health. As of 2017 reporting year, the NRER contains medical and dosimetry information on 205 044 clean-up workers of the Chernobyl accident (liquidators), collected during the follow-up period from 1986 to 2016. Using special software for management of data from long-term studies of the Russian cohort of Chernobyl liquidators NRER ensures high quality of radiation-epidemiological information. The results of research activities of the NRER make great contribution to understanding biological and health effects of low-level radiation, molecular mechanisms of the effects, development of actions to early diagnostic of radiation-related diseases to respond to the needs of the affected population while minimizing unnecessary anxiety, improvement of targeting treatments delivery to exposed people at high risk, development of measures to reduce health risks from medical radiological procedures. During the post-Chernobyl period, new methods for estimating radiation doses were developed, some of them can be used for express estimation of radiation dose in the event of radiological emergency.
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Affiliation(s)
- V K Ivanov
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - V V Kashcheev
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - M A Maksioutov
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - K A Tumanov
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - S Yu Chekin
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - P V Kashcheeva
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - A D Kaprin
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 4 Korolev Str., Obninsk, Kaluga Region, Russia
| | - S A Ivanov
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
| | - N G Seleva
- A. Tsyb Medical Radiological Research Center - Branch of the Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 10 Marshal Zhukov Str., Obninsk, Kaluga Region, Russia
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47
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Teplonogova MA, Yapryntsev AD, Baranchikov AE, Ivanov VK. Selective hydrothermal synthesis of ammonium vanadates(V) and (IV,V). TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0265-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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48
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Popov AL, Popova NR, Tarakina NV, Ivanova OS, Ermakov AM, Ivanov VK, Sukhorukov GB. Intracellular Delivery of Antioxidant CeO2 Nanoparticles via Polyelectrolyte Microcapsules. ACS Biomater Sci Eng 2018; 4:2453-2462. [DOI: 10.1021/acsbiomaterials.8b00489] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anton L. Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow Region, Pushchino 142290, Russia
| | - Nelli R. Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow Region, Pushchino 142290, Russia
| | - Nadezda V. Tarakina
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom
| | - Olga S. Ivanova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 117901, Russia
| | - Artem M. Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow Region, Pushchino 142290, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 117901, Russia
- National Research Tomsk State University, Tomsk 634050, Russia
| | - Gleb B. Sukhorukov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow Region, Pushchino 142290, Russia
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom
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49
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Popov AL, Popova N, Gould DJ, Shcherbakov AB, Sukhorukov GB, Ivanov VK. Ceria Nanoparticles-Decorated Microcapsules as a Smart Drug Delivery/Protective System: Protection of Encapsulated P. pyralis Luciferase. ACS Appl Mater Interfaces 2018; 10:14367-14377. [PMID: 29633830 DOI: 10.1021/acsami.7b19658] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The design of novel, effective drug delivery systems is one of the most promising ways to improve the treatment of socially important diseases. This article reports on an innovative approach to the production of composite microcontainers (microcapsules) bearing advanced protective functions. Cerium oxide (CeO2) nanoparticles were incorporated into layer-by-layer polyelectrolyte microcapsules as a protective shell for an encapsulated enzyme (luciferase of Photinus pyralis), preventing its oxidation by hydrogen peroxide, the most abundant type of reactive oxygen species (ROS). The protective effect depends on CeO2 loading in the shell: at a low concentration, CeO2 nanoparticles only scavenge ROS, whereas a higher content leads to a decrease in access for both ROS and the substrate to the enzyme in the core. By varying the nanoparticle concentration in the microcapsule, it is possible to control the level of core shielding, from ROS filtering to complete blocking. A comprehensive analysis of microcapsules by transmission electron microscopy, scanning electron microscopy, atomic force microscopy, confocal laser scanning microscopy, and energy-dispersive X-ray spectroscopy techniques was carried out. Composite microcapsules decorated with CeO2 nanoparticles and encapsulated luciferase were shown to be easily taken up by rat B-50 neuronal cells; they are nontoxic and are able to protect cells from the oxidative stress induced by hydrogen peroxide. The approach demonstrated that the active protection of microencapsulated substances by CeO2 nanoparticles can be used in the development of new drug delivery and diagnostic systems.
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Affiliation(s)
- Anton L Popov
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
| | - Nelli Popova
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
| | - David J Gould
- William Harvey Research Institute , Queen Mary University of London , London EC1M 6BQ , U.K
| | - Alexander B Shcherbakov
- Zabolotny Institute of Microbiology and Virology , National Academy of Sciences of Ukraine , Kyiv D0368 , Ukraine
| | - Gleb B Sukhorukov
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
- School of Engineering & Materials Science , Queen Mary University of London , London E1 4NS , U.K
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Moscow 119991 , Russia
- National Research Tomsk State University , Tomsk 634050 , Russia
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50
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Lermontov SA, Malkova AN, Sipyagina NA, Semakov AV, Baranchikov AE, Ivanov VK. Methyl trifluoropyruvate – a new solvent for the production of fluorinated organic resorcinol–formaldehyde aerogels. Mendeleev Communications 2018. [DOI: 10.1016/j.mencom.2018.01.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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