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Stebliy ME, Bazrov MA, Namsaraev ZZ, Letushev ME, Kozlov AG, Antonov VA, Stebliy EV, Davydenko AV, Ognev AV, Shiota Y, Ono T, Samardak AS. Nonuniform Current-Driven Formation and Displacement of the Magnetic Compensation Point in Variable-Width Nanoscale Ferrimagnets. ACS Appl Mater Interfaces 2023; 15:40792-40798. [PMID: 37595054 DOI: 10.1021/acsami.3c08979] [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] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Nano- and microstructures based on ferrimagnets can demonstrate high efficiency and dynamics of current-induced magnetization switching combined with high stability of spin textures such as bubble domains and skyrmions, which are of practical importance for the development of spintronics and spin-orbitronics. This set of features is usually associated with magnetic momentum or angular momentum compensation states. Here, we experimentally show that the compensation state can be realized locally using nonuniform Joule heating. This effect is observed in the variable-width current guide made of the ferrimagnetic W/Co76Tb24/Ru thin films, where the position of a region heated to the compensation temperature depends linearly on the current pulse amplitude. This approach makes it possible to observe the simultaneous coexistence of Co-dominant and Tb-dominant regions, where current pulses induce spin-orbit torques in opposite directions, leading to local magnetization switching. It is found that the position of a Néel domain wall constraining the switched region lies in the vicinity of the coordinate corresponding to the compensation point but does not coincide with it due to high mobility under the action of spin current. Our findings open an alternative approach for engineering of ferrimagnetic nanodevices with advanced properties for future applications in spintronics, spin-orbitronics, and nanoelectronics.
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Affiliation(s)
- Maksim E Stebliy
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Michail A Bazrov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Zhimba Zh Namsaraev
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Michail E Letushev
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Aleksei G Kozlov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Valerii A Antonov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Ekaterina V Stebliy
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Aleksandr V Davydenko
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
| | - Alexey V Ognev
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
- Sakhalin State University, Yuzhno-Sakhalinsk 693000, Russia
| | - Yoichi Shiota
- Institute for Chemical Research, Kyoto University, Gokasho, Uji 611-0011, Kyoto, Japan
| | - Teruo Ono
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
- Institute for Chemical Research, Kyoto University, Gokasho, Uji 611-0011, Kyoto, Japan
- Center for Spintronics Research Network, Graduate School of Engineering Science, Osaka University, Machikaneyama 1-3, Toyonaka 560-8531, Osaka, Japan
- Center for Spintronics Research Network, Institute for Chemical Research, Kyoto University, Gokasho, Uji 611-0011, Kyoto, Japan
| | - Alexander S Samardak
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, Vladivostok 690950, Russia
- Sakhalin State University, Yuzhno-Sakhalinsk 693000, Russia
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Samardak VY, Komissarov AA, Dotsenko AA, Korochentsev VV, Osmushko IS, Belov AA, Mushtuk PS, Antonov VA, Ahmadpour G, Nasirpouri F, Samardak AS, Ognev AV. Electronic Structure of NdFeCoB Oxide Magnetic Particles Studied by DFT Calculations and XPS. Materials (Basel) 2023; 16:1154. [PMID: 36770162 PMCID: PMC9921898 DOI: 10.3390/ma16031154] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Neodymium-iron-boron magnetic oxide powders synthesized by sol-gel Pechini method were studied by using X-ray photoelectron spectroscopy (XPS) and quantum chemical modeling. The powder structure was examined by using X-ray diffraction (XRD) and modeled by using density functional theory (DFT) approximation. The electronic structures of the core and valent regions were determined experimentally by using X-ray photoelectron spectroscopy and modeled by using quantum chemical methods. This study provides important insights into the electronic structure and chemical bonding of atoms of NdFeCoB oxide particles with the partial substitution of Fe by Co atoms.
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Affiliation(s)
- Vadim Yu. Samardak
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Alexander A. Komissarov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
- Laboratory of Electronic Structure and Quantum Chemical Modeling, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Alexander A. Dotsenko
- Laboratory of Electronic Structure and Quantum Chemical Modeling, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Vladimir V. Korochentsev
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
- Laboratory of Electronic Structure and Quantum Chemical Modeling, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Ivan S. Osmushko
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
- Laboratory of Electronic Structure and Quantum Chemical Modeling, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Anton A. Belov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Pavel S. Mushtuk
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Valerii A. Antonov
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Ghader Ahmadpour
- Faculty of Materials Engineering, Sahand University of Technology, Tabriz 5513351996, Iran
| | - Farzad Nasirpouri
- Faculty of Materials Engineering, Sahand University of Technology, Tabriz 5513351996, Iran
| | - Alexander S. Samardak
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Alexey V. Ognev
- Laboratory of Spin-Orbitronics, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
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3
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Khairulin IR, Radeonychev YV, Antonov VA, Kocharovskaya O. Acoustically induced transparency for synchrotron hard x-ray photons. Sci Rep 2021; 11:7930. [PMID: 33846377 PMCID: PMC8041895 DOI: 10.1038/s41598-021-86555-x] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 03/17/2021] [Indexed: 12/05/2022] Open
Abstract
The induced transparency of opaque medium for resonant electromagnetic radiation is a powerful tool for manipulating the field-matter interaction. Various techniques to make different physical systems transparent for radiation from microwaves to x-rays were implemented. Most of them are based on the modification of the quantum-optical properties of the medium under the action of an external coherent electromagnetic field. Recently, an observation of acoustically induced transparency (AIT) of the 57Fe absorber for resonant 14.4-keV photons from the radioactive 57Co source was reported. About 150-fold suppression of the resonant absorption of photons due to collective acoustic oscillations of the nuclei was demonstrated. In this paper, we extend the AIT phenomenon to a novel phase-locked regime, when the transmitted photons are synchronized with the absorber vibration. We show that the advantages of synchrotron Mössbauer sources such as the deterministic periodic emission of radiation and controlled spectral-temporal characteristics of the emitted photons along with high-intensity photon flux in a tightly focused beam, make it possible to efficiently implement this regime, paving the way for the development of the acoustically controlled interface between hard x-ray photons and nuclear ensembles.
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Affiliation(s)
- I R Khairulin
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia
- N. I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russia
| | - Y V Radeonychev
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia.
- N. I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russia.
- Kazan Physical-Technical Institute, Russian Academy of Sciences, Kazan, 420029, Russia.
| | - V A Antonov
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia
| | - Olga Kocharovskaya
- Department of Physics and Astronomy, Institute for Quantum Studies and Engineering, Texas A&M University, College Station, TX, 77843-4242, USA
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Antonov VA, Han KC, Akhmedzhanov TR, Scully M, Kocharovskaya O. Attosecond Pulse Amplification in a Plasma-Based X-Ray Laser Dressed by an Infrared Laser Field. Phys Rev Lett 2019; 123:243903. [PMID: 31922815 DOI: 10.1103/physrevlett.123.243903] [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] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Indexed: 06/10/2023]
Abstract
High-harmonic generation (HHG) of laser radiation has led to attosecond pulse formation which offers unprecedented temporal resolution in observing and controlling electron and nuclear dynamics. But the energy of attosecond pulses remains quite small, especially for photon energies exceeding 100 eV, which limits their practical applications. We propose a method for amplification of attosecond pulses in the active medium of a plasma-based x-ray laser dressed by a replica of the laser field used for HHG. The experimental implementation is suggested in hydrogenlike C5+ x-ray laser at 3.4 nm wavelength in the "water window" range.
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Affiliation(s)
- V A Antonov
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod 603950, Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow 119991, Russia
| | - K Ch Han
- Department of Physics and Astronomy and Institute for Quantum Studies and Engineering, Texas A&M University, College Station, Texas 77843-4242, USA
| | - T R Akhmedzhanov
- Department of Physics and Astronomy and Institute for Quantum Studies and Engineering, Texas A&M University, College Station, Texas 77843-4242, USA
| | - Marlan Scully
- Department of Physics and Astronomy and Institute for Quantum Studies and Engineering, Texas A&M University, College Station, Texas 77843-4242, USA
| | - Olga Kocharovskaya
- Department of Physics and Astronomy and Institute for Quantum Studies and Engineering, Texas A&M University, College Station, Texas 77843-4242, USA
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Korsakova II, Antonov VA, Khrapova NP, Zamarina TV, Pimenova EV, Kim EE, Merinova LK, Senina TV, Tkachenko GA, Savchenko SS, Ageeva NP, Molchanova EV, Lopasteiskaya YA, Prokhvatilova EV. [IDENTIFICATION OF CAUSATIVE AGENTS OF GLANDERS AND MELIOIDOSIS BASED ON PRINCIPLES OF POLYPHASE TAXONOMIC APPROACH]. Zh Mikrobiol Epidemiol Immunobiol 2016:25-34. [PMID: 30695386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
AIM Determine an optimal set of the most effective methods of identification and intraspecies typing ofcausative agents ofglanders and melioidosis. Materials andmethods. Bacteriologic, immunochemical, molecular-genetic methods were used. RESULTS A possibility to identify collection strains of pathogenic and closely related Burkholderia in semiautomatic systems is studied. Means of detection of informative variable genome segments ofthe specified microorganisms were developed, methods of their genetic typing were selected. Effectiveness of application of precipitating mAbs for differentiation of Burkholderia was established. Data on diagnostic possibilities of immunoglobulins fluorescing based on monoclonal antibodies of various etiotropic directionality for detection and identification of B. mallei and B. pseudomallei are generalized. Experimental series of amplification test-systems for identification of glanders and melioidosis causative agents in real-time PCR format are created. CONCLUSION A number of methods for identification and typing of glanders and melioidosis causative agents is proposed.
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Bondareva OS, Savchenko SS, Tkachenko GA, Ledeneva ML, Lemasova LV, Antonov VA. [GENOTYPING OF THE BURKHOLDERIA MALLEI STRAINS BASED ON DIFFERENT REGION ANALYSIS]. Mol Gen Mikrobiol Virusol 2016; 34:33-37. [PMID: 27183720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Development of the genotyping methods of glanders agent is urgent due to its high pathogenicity, lack of effective preventive measures and threat of the use of Burkholderia mallei as a biological weapon. In this work we proposed a scheme for the typing of the B. mallei strains based on different region analysis (DFR). The choice of variable loci differentially presented in various strains of glanders agents was performed by analyzing annotated whole-genome sequences of the B. mallei strains. Primers and fluorescence probes were designed for 9 selected loci. The amplification conditions for different regions were optimized in two variants: with electrophoretic detection and hybridization-fluorescence detection in the strip format. The possibility of applying the DFR analysis to genetic characterization of strains was assessed in 14 B. mallei strains. The genetic profiles of the studied B. mallei strains revealed that the developed DFR-typing scheme was characterized by high discrimination power (Hunter-Gaston index value was 0.92), reproducibility, rapidity, easy interpretation, and applicability for epidemiological surveillance of glanders.
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7
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Antonov VA, Viktorov DV. [ON DEVELOPMENT OF TOOLS OF IMMUNE DIAGNOSTIC OF INFECTIOUS DISEASES: PROBLEMS OF DIAGNOSTIC IN VIVO AND IN VITRO]. Klin Lab Diagn 2016; 61:48-51. [PMID: 27183730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The article considers a number of problematic issues concerning development of effective means of immune diagnostic of infectious diseases of bacterial and mycotic etiology related to approaches of choosing appropriate diagnostic targets.
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MESH Headings
- Antigens, Bacterial/analysis
- Antigens, Bacterial/chemistry
- Antigens, Bacterial/immunology
- Antigens, Fungal/analysis
- Antigens, Fungal/chemistry
- Antigens, Fungal/immunology
- Bacteria/chemistry
- Bacteria/immunology
- Bacteria/isolation & purification
- Bacterial Infections/diagnosis
- Bacterial Infections/immunology
- Bacterial Infections/microbiology
- Bacterial Proteins/analysis
- Bacterial Proteins/chemistry
- Bacterial Proteins/immunology
- Cell Membrane
- Fungal Polysaccharides/analysis
- Fungal Polysaccharides/chemistry
- Fungal Polysaccharides/immunology
- Fungal Proteins/analysis
- Fungal Proteins/chemistry
- Fungal Proteins/immunology
- Fungi/chemistry
- Fungi/immunology
- Fungi/isolation & purification
- Humans
- Mycoses/diagnosis
- Mycoses/immunology
- Mycoses/microbiology
- Polysaccharides, Bacterial/analysis
- Polysaccharides, Bacterial/chemistry
- Polysaccharides, Bacterial/immunology
- Reagent Kits, Diagnostic/microbiology
- Reagent Kits, Diagnostic/trends
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Prokhvatilova EV, Antonov VA, Viktorov DV, Khrapova NP, Tkachenko GA, Iliukhin VI, Zakharova IB, Grishina MA, Plekhanova NG, Novickaia IV, Kulakov MI, Bulatova TV, Korsakova II, Savchenko SS, Bondareva OS, Teteriatnikova NN, Senina TV, Lopasteĭskaia IA, Baturin AA, Kulikova AS. [The comparative evalution of informativeness of immunologic and molecular genetic methods and means during stages of specific indication of melioidosis agent]. Klin Lab Diagn 2014; 59:55-59. [PMID: 25872272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The reference-center of monitoring of agents of glanders and melioidosis carried out testing of reagents kits for diagnostic of agent of melioidosis and other close-related species of Burkholderiae in vitro. At the stage of specific identification of pathogenic Burkholderiae the diagnostic possibilities of commercial and experimental kits of reagents for express- and rapid analysis were evaluated. The criteria of evaluation of diagnostic value of kits of reagents were sensitivity, specificity and time of implementation of studies. The analysis with application of mono- and multi-locus amplification systems, including real-time polymerase chain reaction permitted during 5-6 hours to implement identification and differentiation of Burkholderia pseufomallei, B. thailandensis and B. cepacia.
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Antonov VA, Radeonychev YV, Kocharovskaya O. Formation of a single attosecond pulse via interaction of resonant radiation with a strongly perturbed atomic transition. Phys Rev Lett 2013; 110:213903. [PMID: 23745878 DOI: 10.1103/physrevlett.110.213903] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Indexed: 06/02/2023]
Abstract
We propose a technique to form a single few-cycle attosecond pulse from vacuum ultraviolet or extreme ultraviolet radiation via resonant interaction with hydrogenlike atoms, irradiated by a high-intensity far-off-resonant laser field. The laser field strongly perturbs excited atomic energy levels via the Stark effect and ionizes atoms from the excited states. We show that an isolated attosecond pulse can be formed using either a short incident femtosecond pulse of the resonant radiation or a steep front edge of the laser field. We propose an experimental realization of a single subfemtosecond pulse formation at 121.6 nm in atomic hydrogen and a single sub-100 as pulse formation at 13.5 nm in Li(2+) plasma.
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Affiliation(s)
- V A Antonov
- Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, Nizhny Novgorod, 603950, Russia.
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Drefs NM, Antonov VA, Barkova IA, Snatenkov YA, Bulatova TV, Smeliyanskiy VP. [The optimization of algorithm of laboratory diagnostic of Western Nile fever in territory of Russia]. Klin Lab Diagn 2013:50-54. [PMID: 24006646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The article deals with results of study of antigenic chiasms between viruses of Western Nile fever and tick-borne encephalitis using binding immunoassay applied to blood serum from patients residing in various regions of Russia. It is established that to get accurate laboratory diagnostic it is reasonable to apply the proposed algorithm of analysis in which alongside with binding immunoassay such differential criterion as positivity rate is to be implemented to speed up and simplify laboratory diagnostic of infections brought on by viruses of Western Nile fever and tick-borne encephalitis.
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Onishchenko GG, Lipnitskiĭ AV, Alekseev VV, Antonov VA, Kriuchkova TP, Krutogolovova TA. [Epidemiologic situation of West Nile fever in Russia in 2010]. Zh Mikrobiol Epidemiol Immunobiol 2011:115-120. [PMID: 21809655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Problem of tropical arbovirus infection--West Nile fever (WNF)--spread in Russian Federation is discussed. Biology of WNF is discussed, WNF sources and reservoir are characterized. WNF outbreaks in Russia during the past 2 decades are presented in detail. Outbreaks of different years, possible causes and epidemiology are discussed. Features of WNF clinical course during various outbreaks and WNF diagnostic problems are presented.
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Antonov VA, Altukhova VV, Savchenko SS, Tkachenko GA, Zamaraev VS, Zhukova SI, Kramar' OG, Matveeva NL, Ostrovskiĭ OV, Dudchenko GP. [Molecular genetic analysis of Pseudomonas aeruginosa strains isolated from environment and patients in health care facilities]. Zh Mikrobiol Epidemiol Immunobiol 2010:8-13. [PMID: 20464993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
AIM Analysis of genetic heterogeneity of Pseudomonas aeruginosa strains isolated in and out of hospitals. MATERIALS AND METHODS To study the genetic diversity of 36 strains of P. aeruginosa plasmid analysis, random amplified polymorphic DNA (RAPD) technique as well as polymerase chain reaction for detection of virulence genes algD, lasB, toxA, plcH, plcN, exoS, nan1, and nan2. RESULTS Epidemically important strains were found in different ecological niches. It was shown that these virulence factors could play important roles in pathogenesis of infection. CONCLUSION RAPD technique was effective for analysis of P. aeruginosa isolates. Number of studied typing bands differed between related isolates for each random primer.
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Anishchenko M, Shchelkanov MI, Alekseev VV, Lipnitskiĭ AV, Antonov VA, Dzharkenov AF, Bushkieva BT, L'vov DN, Deriabin PG, Kolobukhina LV, L'vov DK. [Pathogenicity of West Nile virus: molecular markers]. Vopr Virusol 2010; 55:4-10. [PMID: 20364664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The review describes the phenotypic properties, structure, and expression pattern of West Nile virus genome (Flaviviridae, Flavivirus, Japanese encephalitis antigenic complex), as well as the clinical picture and pathogenesis of its etiologically related disease West Nile fever. It also analyzes the available data on the impact of genetic mutations in the genome on the biological properties of the virus.
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14
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Antonov VA, Iliukhin VI, Senina TV, Loboĭko AD, Tkachenko GA, Zinchenko OV, Mazurova II. [Phenotypic and genotypic identification of bacteria from the Burkholderia cepacia complex]. Zh Mikrobiol Epidemiol Immunobiol 2008:78-82. [PMID: 18822500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM Evaluation of the diagnostic value of pheno- and genotypic characteristics of B. cepacia strains collection. MATERIALS AND METHODS Phenotypic and genetic methods of identification and differentiation of 25 strains of the B. cepacia complex. RESULTS Polyphasic taxonomic approach utilizing multiple diagnostic tests was used for accurate identification of Burkholderia species. Algorithm for identification of microorganisms from the B. cepacia complex was developed. CONCLUSION Combined use of phenotypic and molecular genetic tests, such as recA gene PCR, is recommended for differentiation of the B. cepacia complex genomovars.
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15
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Zinchenko OV, Antonov VA, Tkachenko GA, Altukhova VV, Zamaraev VS, Piven' NN, Goloseev IA, Vasil'ev VP, Lomova LV, Alekseev VV. [Comparative assessment of DNA extraction methods for identification of glanders and melioidosis etiological agents by PCR]. Zh Mikrobiol Epidemiol Immunobiol 2008:55-60. [PMID: 18368754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Pathogenic Burkholderia are considered as a cause of dangerous infections and potential agents of bioterrorism. Comparative assessment of different methods of extraction and purification of DNA for PCR analysis of pure cultures and samples contaminated by etiological agents of glanders and melioidosis was performed. Samples of soil and food artificially contaminated by pathogenic Burkholderia as well as organs of infected animals were tested. DNA was extracted by methods of boiling, nucleosorption with presence of guanidine thiocyanate, guanidine thiocyanatephenol extraction, guanidine thiocyanate-phenol extraction with additional purification of DNA by nucleosorption. Amplification was performed by "Flash" technique and detector of fluorescence was used for analysis of PCR products. Utilization of the recommended methods of preparation depending on the nature of sample let to detect by the "Flash" technique the etiological agents of glanders and melioidosis in concentration =10(3) microbial cells per ml. Choice of DNA extraction and purification methods is determined by type of a sample and presence in it of admixtures inhibiting PCR.
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16
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Antonov VA, Altukhova VV, Savchenko SS, Zamaraev VS, Iliukhin VI, Alekseev VV. [The use of multilocus sequence typing (MLST) and randomly amplified polymorphic DNA (RAPD) for the differentiation between strains of Burkholderia mallei]. Mol Gen Mikrobiol Virusol 2007:3-9. [PMID: 17891848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Burkholderia mallei is highly pathogenic microorganism for both humans and animals. In this work, the possibility of the use of the genotyping method for differentiation between strains of B. mallei was studied. A collection of 14 isolates of B. mallei was characterized using randomly amplified polymorphic DNA (RAPD) and multilocus sequence typing (MLST). RAPD was the best method used for detecting strain differences of B. mallei. It was suggested that this method would be an increasingly useful molecular epidemiological tool.
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17
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Tkachenko GA, Grishina MA, Antonov VA, Savchenko SS, Zamaraev VS, Lesovoĭ VS, Lipnitskiĭ AV. [Identification of the agents of coccidioidomycosis using polymerase chain reaction]. Mol Gen Mikrobiol Virusol 2007:25-31. [PMID: 18154078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Two pairs of primers for diagnosis of coccidioidomycosis using the method of PCR were constructed. One pair was used for identification of the two species of Coccidioides (C. immitis and C. posadasil) on the basis of MBP-1 gene. The other pair was chosen on the basis of SOWgp82 gene, which encodes an immunodominant, spherule outer wall glycoprotein for detecting only C. posadasii. The used primers allowed the agents of coccidioidomycosis to be detected using PCR with high sensitivity and specificity. The effective method of isolation of fungus DNA from soil contaminated with arthroconidia of Coccidioides spp. was developed. It includes guanidinthiocyanate-phenol-chloroform deproteinization followed by DNA purification using nuclear sorption.
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Altukhova VV, Antonov VA, Tkachenko GA, Zinchenko OV, Zamaraev VS, Plekhanova NG, Iliukhin VI, Trofimov DI. [The use of polymerase chain reaction for detection of the agents of glanders and melioidosis using experimental infection]. Mol Gen Mikrobiol Virusol 2007:22-7. [PMID: 17891849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Glanders and melioidosis are severe infectious diseases of people and animals. The causative agents of these infections refer to the potential agents of bioterrorism of group B. In this work the possibility of use of flagellin-based primers for the identification of B. mallei and B. pseudomallei and for diagnosis of experimental glanders and melioidosis was studied. The obtained results permit to make a conclusion that PCR using the developed primers may be recommended for the incorporation in the scheme of laboratory diagnosis of glanders and melioidosis both for the identification of clean cultures and in experimental clinical material.
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Antonov VA, Iliukhin VI. [Molecular-genetic approaches to diagnosis and intraspecific typing of causative agents of glanders and melioidosis]. Mol Gen Mikrobiol Virusol 2005:3-9. [PMID: 15954468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Pathogenic Burkholderia--Burkholderia mallei and Burkholderia pseudomallei--are causative agents of glanders and melioidosis, severe infectious diseases of man and animals. They are regarded as potential agents of bioterrorism. The existing bacteriological and immunological methods of identification of B. mallei and B. pseudomallei are not efficient enough for the rapid diagnosis and typing of strains. Described in the paper are molecular methods of detection of the agents by PCR, hybridization and strain typing made on the basis of bacterial total cell protein profiles, RAPD, ribotyping as well as of plasmid and DNA microrestriction analyses.
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Antonov VA, Tkachenko GA, Altukhova VV, Zamaraev VS, Iliukhin VI, Trofimov DI. [Use of PCR for identification of Burkholderia mallei]. Mol Gen Mikrobiol Virusol 2004:12-7. [PMID: 15024998] [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] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Stimuli of glanders belong to the potential agents of biological terror. The possibility to use various primers in the identification of B. mallei was investigated and the significance of polymerase chain reaction (PCR) was defined within the scheme of laboratory glanders diagnosis in the offered paper. The constructed amplifying test-systems can be used to detect the glanders both in the environmental objects contaminated with B. mallei and in experimental clinical material.
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Affiliation(s)
- V A Antonov
- Research Institute for Plague Control, Volgograd, Russia
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Tkachenko GA, Antonov VA, Zamaraev VS, Iliukhin VI. [Identification of the causative agents of glanders and melioidosis by polymerase chain reaction]. Mol Gen Mikrobiol Virusol 2003:18-22. [PMID: 12966921] [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] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Burkholderia mallei and B. pseudomallei are causative agents of glanders and melioidosis, respectively, i.e. severe and fatal infection diseases of man and animal. The computer-based analysis of the 23S rRNA gene sites was used for selecting the primers. Two pairs of primers were chosen for the identification of B. mallei and Bpseudomallei. DNAs from 48 B. pseudomallei and 15 strains of B. mallei, unlike from other geterological bacteria, were positively amplified. Therefore, the method of polymerase chain reaction can be used in laboratory diagnosis of glanders and melioidosis.
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Antonov VA, Grishkina TA, Zamaraev VS, Iliukhin VI. [Effect of cultivation temperature on the extrachromosomal hereditary factors of the causative agent of melioidosis]. Zh Mikrobiol Epidemiol Immunobiol 2003:3-7. [PMID: 12886599] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The cultivation temperature of Burkholderia pseudomallei has been shown to determine both the direction of morphological dissociation and the prophage induction rate. Inheriting plasmid replicons was found to depend on the temperature conditions during the growth of these bacteria. No influence of B. pseudomallei plasmids pPM1 and pCM2 on the lysogenic state of the bacterial cell and the formation of different B. pseudomallei variants was noted.
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Affiliation(s)
- V A Antonov
- Research Institute for Plague Control, Volgograd, Russia
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Iliukhin VI, Senina TV, Plekhanova NG, Antonov VA, Merinova LK, Seimova IK. [Burkholderia thailandensis: biological properties, identification and taxonomy]. Mol Gen Mikrobiol Virusol 2002:7-11. [PMID: 11904924] [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] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Burkholderia pseudomallei-like microorganisms have been isolated from soil and water in regions with endemic melioidosis. These strains have biochemical and antigenic profiles identical to melioidosis agents, except that they differ by virulence and L-arabinose (vir-, ara+). There are minor differences between these species by rRNA sequence. DNA hybridization and, more so, positive transformation of DNA auxotrophic mutants of B. pseudomallei by cell lysates of B. thailandensis and B. mallei confirmed the homology of these species' genomes. These members of the Burkholderia genus (pseudomallei, mallei, and thailandensis) can be regarded as a supraspecies taxon: pseudomallei group. B. thailandensis strains are not virulent for guinea pigs and slightly virulent for golden hamsters. Immunization with live cultures of B. thailandensis protected more than 50% guinea pigs challenged with 200 LD50 B. pseudomallei 100. B. thailandensis is suggested as a potential melioidosis vaccine.
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Merinova LK, Antonov VA, Zamaraev VS, Viktorov DV. [Mobilization of a cryptic plasmid from the melioidosis pathogen in heterologous species of microorganisms]. Mol Gen Mikrobiol Virusol 2000:37-40. [PMID: 10876767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Cryptic plasmids with different molecular weights have been detected in B. pseudomallei strains. Mobilization of B. pseudomallei plasmid DNA in heterologous B. mallei species was performed by the conjugate plasmid RP1::Tn10. Possibility of detecting phenotypical characteristics of plasmids and behavior of B. pseudomallei non-chromosomal replicons in B. mallei have been determined.
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Zamaraev VS, Antonov VA, Iliukhin VI, Zakharova IB. [Isolation and primary characteristics of a Pseudomonas (Burkholderia) pseudomallei plasmid]. Mol Gen Mikrobiol Virusol 1999:28-33. [PMID: 9987750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Plasmid screening of reference Pseudomonas pseudomallei strains isolated from patients and animals revealed cryptic plasmids with different molecular weights in 30 strains. Plasmids were investigated by restriction analysis and DNA-DNA hybridization. Cryptic plasmids were denoted as pPM1, pCM2, pCM3, and pCM4. The presence of plasmids in melioidosis agent permits their use for intraspecies typing of strains and for genetic studies.
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Timoshin VB, Zamaraev VS, Antonov VA, Lipnitskiĭ AV. [A species-specific DNA probe for identifying toxic strains of anthrax pathogens]. Mol Gen Mikrobiol Virusol 1994:30-3. [PMID: 8133849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
On the plasmid DNA pOX01 of the anthrax pathogen two BamHI fragments were localized which facilitate detection of the Bacillus anthracis strains carrying pXO1 replicon. These fragments, after complete hydrolysis of plasmid DNA by HindIII, were cloned on the vector plasmids pUC19 and pBR322 by the "shot-gun" method in Escherichia coli cells. It is shown that the 900 bp BamHI/HindIII fragment from the pZAT1 recombinant plasmid has an ability for specific hybridization with DNA of toxigenic strains of B. anthracis and could be used as species-specific anthracic DNA probe which identifies toxigenic strains of the anthrax pathogen differentiating it from the other species of Bacillus genus as well as from the bacteria of other taxonomy groups.
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Antonov VA. [Electric alternation of the heart in myocardial abscesses]. Kardiologiia 1991; 31:49-50. [PMID: 1779518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Antonov VA, Drozhzhin VA, Salalykin VI. [ECG of patients with brain tumors during neurosurgical operations]. Anesteziol Reanimatol 1988:3-6. [PMID: 3223619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Drozhzhin VA, Salalykin VI, Antonov VA, Gabibov GA, Makhmudov UB. [Arterial hypotension controlled by sodium nitroprusside during removal of peri-stem tumors of sub- and supratentorial location]. Anesteziol Reanimatol 1988:32-5. [PMID: 3407996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Drozhzhin VA, Antonov VA. [Controlled arterial hypotension using sodium nitroprusside in neurosurgery]. Zh Vopr Neirokhir Im N N Burdenko 1986:49-54. [PMID: 3532650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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31
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Antonov VA, Prokof'eva EE. [Immediate result of a specialized treatment of a patient with multiple fractures of the facial bones in combined trauma]. Vestn Khir Im I I Grek 1984; 133:93-5. [PMID: 6523677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Antonov VA. [To new limits]. Voen Med Zh 1984:8-10. [PMID: 6506547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Antonov VA, Gorelov NS, Sumskiĭ LI, Izmaĭlov VI. [Paroxysmal atrial tachycardia with a block of atrioventricular conduction occurring during carotid angiography]. Kardiologiia 1979; 19:115-6. [PMID: 502160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Golubkov AG, Korolev VI, Antonov VA, Ignat'eva EA. [Comparison of localization signals of dolphins with data for optimal signal calculation]. Dokl Akad Nauk SSSR 1975; 223:1251-2. [PMID: 1201709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kochanova RI, Antonov VA, Nikolaeva AG. [Case of aortic rupture in stenosis of the aortic valve orifice]. TERAPEVT ARKH 1971; 43:99-101. [PMID: 5561208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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