1
|
Ayala R, Street M, Moissenko A, Kulikov E, Kuznetsov A, Sokolova OS, Wolf M, Letarov A. Reconstruction of the Entire RB43 Bacteriophage by Single Particle Cryo-EM. Microsc Microanal 2023; 29:928-929. [PMID: 37613464 DOI: 10.1093/micmic/ozad067.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Rafael Ayala
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa, Japan
| | - Maya Street
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa, Japan
| | - Andrey Moissenko
- Department of Biology, Moscow Lomonosov University, Moscow, Russia
- N.N.Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Eugene Kulikov
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Alexander Kuznetsov
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Olga S Sokolova
- Department of Biology, Moscow Lomonosov University, Moscow, Russia
| | - Matthias Wolf
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa, Japan
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan
| | - Andrey Letarov
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
2
|
Krasnovskaya OO, Abramchuck D, Erofeev A, Gorelkin P, Kuznetsov A, Shemukhin A, Beloglazkina EK. Recent Advances in 64Cu/ 67Cu-Based Radiopharmaceuticals. Int J Mol Sci 2023; 24:ijms24119154. [PMID: 37298101 DOI: 10.3390/ijms24119154] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/19/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023] Open
Abstract
Copper-64 (T1/2 = 12.7 h) is a positron and beta-emitting isotope, with decay characteristics suitable for both positron emission tomography (PET) imaging and radiotherapy of cancer. Copper-67 (T1/2 = 61.8 h) is a beta and gamma emitter, appropriate for radiotherapy β-energy and with a half-life suitable for single-photon emission computed tomography (SPECT) imaging. The chemical identities of 64Cu and 67Cu isotopes allow for convenient use of the same chelating molecules for sequential PET imaging and radiotherapy. A recent breakthrough in 67Cu production opened previously unavailable opportunities for a reliable source of 67Cu with high specific activity and purity. These new opportunities have reignited interest in the use of copper-containing radiopharmaceuticals for the therapy, diagnosis, and theranostics of various diseases. Herein, we summarize recent (2018-2023) advances in the use of copper-based radiopharmaceuticals for PET, SPECT imaging, radiotherapy, and radioimmunotherapy.
Collapse
Affiliation(s)
- Olga O Krasnovskaya
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russia
| | - Daniil Abramchuck
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russia
| | - Alexander Erofeev
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russia
- Research Laboratory of Biophysics, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Peter Gorelkin
- Research Laboratory of Biophysics, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Alexander Kuznetsov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 2, 119991 Moscow, Russia
- Department of Physics, Lomonosov Moscow State University, Leninskie Gory, 1/2, 119991 Moscow, Russia
| | - Andrey Shemukhin
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 2, 119991 Moscow, Russia
| | - Elena K Beloglazkina
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russia
| |
Collapse
|
3
|
Ercoli MD, Álvarez A, Warburton NM, Janis CM, Potapova EG, Herring SW, Cassini GH, Tarquini J, Kuznetsov A. Myology of the masticatory apparatus of herbivorous mammals and a novel classification for a better understanding of herbivore diversity. Zool J Linn Soc 2023. [DOI: 10.1093/zoolinnean/zlac102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Abstract
Masticatory muscle features allow for an understanding of how dietary habits and masticatory functions have evolved across mammalian lineages. Herbivorous mammals were traditionally classified as pertaining to either ‘ungulate-grinding’ or ‘rodent-gnawing’ morphotypes, but those classes might not adequately encompass the diversity of past and present herbivores. We compiled data for 104 herbivorous (nine orders, including new data for 31 species) and ten non-herbivorous (five orders) extant species and for four extinct taxa, in order to construct a more comprehensive scheme of masticatory morphotypes. A myological phylomorphospace revealed 15 morphotypes, which were tested statistically and interpreted morphofunctionally. Extant herbivorous morphotypes diversified along two main pathways that did not reflect the traditional types. Additionally, some extinct herbivores adapted along alternative pathways to those of extant forms. Early mammaliaforms and mammals possessed muscle proportions almost identical to those of living carnivores. Several more plesiomorphic herbivorous morphotypes were recognized, with some of them retaining generalized myological proportions. The rodent disparity was remarkable and could not be encompassed by a single category or pathway. Features of some derived euungulates and diprotodonts resembled rodents, but only a few extinct euungulates and extant wombats converged closely with them. Criteria for selecting models for palaeobiological reconstructions are discussed.
Collapse
|
4
|
Elaguech MA, Bahri M, Djebbi K, Zhou D, Shi B, Liang L, Komarova N, Kuznetsov A, Tlili C, Wang D. Nanopore-based aptasensor for label-free and sensitive vanillin determination in food samples. Food Chem 2022; 389:133051. [PMID: 35490517 DOI: 10.1016/j.foodchem.2022.133051] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/24/2022] [Accepted: 04/21/2022] [Indexed: 11/19/2022]
Abstract
Dielectric breakdown technique was utlised to fabricate 5-6 nm nanopores for vanillin detection in various food samples. A highly selective aptamer (Van_74) with high binding affinity towards vanillin was used as capture probe. Under optimal conditions, aptamer/vanillin complex translocation induced deeper events than the bare aptamer. As a result, the proposed nanopore aptasensor exhibits a linear range from 0.5 to 5 nM (R2 = 0.972) and a low detection limit of 500 pM, which is significantly better than conventional platforms. Furthermore, our aptasensor showed excellent immunity against different interferons and was used to detect vanillin in different food samples. The food sample measurements were confirmed with an additional UV-Vis assay, the results of the two techniques were statistically evaluated and showed no statistically significant difference. Hence, this work represents a proof-of-concept involving the design and testing of aptamer/nanopore sensors for small molecules detection, which plays a critical role in food safety.
Collapse
Affiliation(s)
- Mohamed Amin Elaguech
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Mohamed Bahri
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Khouloud Djebbi
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Daming Zhou
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China
| | - Biao Shi
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China
| | - Liyuan Liang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China
| | | | - Alexander Kuznetsov
- SMC Technological Centre, Moscow 124498, Russia; Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences, Moscow 119991, Russia
| | - Chaker Tlili
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China.
| | - Deqiang Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; Chongqing School, University of Chinese Academy of Sciences (UCAS), Chongqing 400714, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China.
| |
Collapse
|
5
|
Alekseev I, Balej K, Belov V, Evseev S, Filosofov D, Fomina M, Hons Z, Karaivanov D, Kazartsev S, Khushvaktov J, Kuznetsov A, Lubashevskiy A, Medvedev D, Ponomarev D, Rakhimov A, Shakhov K, Shevchik E, Shirchenko M, Smolek K, Rozov S, Rozova I, Vasilyev S, Yakushev E, Zhitnikov I. First results of the
νGeN
experiment on coherent elastic neutrino-nucleus scattering. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.l051101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
6
|
Kochetkov IV, Bukharskii ND, Ehret M, Abe Y, Law KFF, Ospina-Bohorquez V, Santos JJ, Fujioka S, Schaumann G, Zielbauer B, Kuznetsov A, Korneev P. Neural network analysis of quasistationary magnetic fields in microcoils driven by short laser pulses. Sci Rep 2022; 12:13734. [PMID: 35962017 PMCID: PMC9374746 DOI: 10.1038/s41598-022-17202-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 07/21/2022] [Indexed: 11/09/2022] Open
Abstract
Optical generation of kilo-tesla scale magnetic fields enables prospective technologies and fundamental studies with unprecedentedly high magnetic field energy density. A question is the optimal configuration of proposed setups, where plenty of physical phenomena accompany the generation and complicate both theoretical studies and experimental realizations. Short laser drivers seem more suitable in many applications, though the process is tangled by an intrinsic transient nature. In this work, an artificial neural network is engaged for unravelling main features of the magnetic field excited with a picosecond laser pulse. The trained neural network acquires an ability to read the magnetic field values from experimental data, extremely facilitating interpretation of the experimental results. The conclusion is that the short sub-picosecond laser pulse may generate a quasi-stationary magnetic field structure living on a hundred picosecond time scale, when the induced current forms a closed circuit.
Collapse
Affiliation(s)
- Iu V Kochetkov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - N D Bukharskii
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - M Ehret
- Centre Lasers Intenses et Applications (CELIA), UMR 5107, Université de Bordeaux - CNRS - CEA, Talence, France.,Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - Y Abe
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - K F F Law
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | | | - J J Santos
- Centre Lasers Intenses et Applications (CELIA), UMR 5107, Université de Bordeaux - CNRS - CEA, Talence, France
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | | | - A Kuznetsov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - Ph Korneev
- National Research Nuclear University MEPhI, Moscow, Russian Federation. .,Lebedev Physical Institute, Moscow, Russian Federation.
| |
Collapse
|
7
|
Zaitsev A, Chelushkin M, Dyikanov D, Cheremushkin I, Shpak B, Nomie K, Zyrin V, Nuzhdina E, Lozinsky Y, Zotova A, Degryse S, Kotlov N, Baisangurov A, Shatsky V, Afenteva D, Kuznetsov A, Paul SR, Davies DL, Reeves PM, Lanuti M, Goldberg MF, Tazearslan C, Chasse M, Wang I, Abdou M, Aslanian SM, Andrewes S, Hsieh JJ, Ramachandran A, Lyu Y, Galkin I, Svekolkin V, Cerchietti L, Poznansky MC, Ataullakhanov R, Fowler N, Bagaev A. Precise reconstruction of the TME using bulk RNA-seq and a machine learning algorithm trained on artificial transcriptomes. Cancer Cell 2022; 40:879-894.e16. [PMID: 35944503 DOI: 10.1016/j.ccell.2022.07.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 05/10/2022] [Accepted: 07/12/2022] [Indexed: 12/21/2022]
Abstract
Cellular deconvolution algorithms virtually reconstruct tissue composition by analyzing the gene expression of complex tissues. We present the decision tree machine learning algorithm, Kassandra, trained on a broad collection of >9,400 tissue and blood sorted cell RNA profiles incorporated into millions of artificial transcriptomes to accurately reconstruct the tumor microenvironment (TME). Bioinformatics correction for technical and biological variability, aberrant cancer cell expression inclusion, and accurate quantification and normalization of transcript expression increased Kassandra stability and robustness. Performance was validated on 4,000 H&E slides and 1,000 tissues by comparison with cytometric, immunohistochemical, or single-cell RNA-seq measurements. Kassandra accurately deconvolved TME elements, showing the role of these populations in tumor pathogenesis and other biological processes. Digital TME reconstruction revealed that the presence of PD-1-positive CD8+ T cells strongly correlated with immunotherapy response and increased the predictive potential of established biomarkers, indicating that Kassandra could potentially be utilized in future clinical applications.
Collapse
Affiliation(s)
| | | | | | | | - Boris Shpak
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | - Krystle Nomie
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | - Vladimir Zyrin
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | | | | | | | | | - Nikita Kotlov
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | | | | | - Daria Afenteva
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | | | - Susan Raju Paul
- The Vaccine and Immunotherapy Center, Massachusetts General Hospital, Boston, MA, USA
| | - Diane L Davies
- Division of Thoracic Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Patrick M Reeves
- The Vaccine and Immunotherapy Center, Massachusetts General Hospital, Boston, MA, USA
| | - Michael Lanuti
- Division of Thoracic Surgery, Massachusetts General Hospital, Boston, MA, USA
| | | | | | - Madison Chasse
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | - Iris Wang
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | - Mary Abdou
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | | | | | - James J Hsieh
- Molecular Oncology, Division of Oncology, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Akshaya Ramachandran
- Molecular Oncology, Division of Oncology, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Yang Lyu
- Molecular Oncology, Division of Oncology, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Ilia Galkin
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA
| | | | - Leandro Cerchietti
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Mark C Poznansky
- The Vaccine and Immunotherapy Center, Massachusetts General Hospital, Boston, MA, USA
| | | | - Nathan Fowler
- BostonGene, Corp., 95 Sawyer Road, Waltham, MA 02453, USA; Department of Lymphoma and Myeloma, MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 429, Houston, TX 77030, USA.
| | | |
Collapse
|
8
|
Komarova N, Panova O, Titov A, Kuznetsov A. Aptamers Targeting Cardiac Biomarkers as an Analytical Tool for the Diagnostics of Cardiovascular Diseases: A Review. Biomedicines 2022; 10:biomedicines10051085. [PMID: 35625822 PMCID: PMC9138532 DOI: 10.3390/biomedicines10051085] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 04/19/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023] Open
Abstract
The detection of cardiac biomarkers is used for diagnostics, prognostics, and the risk assessment of cardiovascular diseases. The analysis of cardiac biomarkers is routinely performed with high-sensitivity immunological assays. Aptamers offer an attractive alternative to antibodies for analytical applications but, to date, are not widely practically implemented in diagnostics and medicinal research. This review summarizes the information on the most common cardiac biomarkers and the current state of aptamer research regarding these biomarkers. Aptamers as an analytical tool are well established for troponin I, troponin T, myoglobin, and C-reactive protein. For the rest of the considered cardiac biomarkers, the isolation of novel aptamers or more detailed characterization of the known aptamers are required. More attention should be addressed to the development of dual-aptamer sandwich detection assays and to the studies of aptamer sensing in alternative biological fluids. The universalization of aptamer-based biomarker detection platforms and the integration of aptamer-based sensing to clinical studies are demanded for the practical implementation of aptamers to routine diagnostics. Nevertheless, the wide usage of aptamers for the diagnostics of cardiovascular diseases is promising for the future, with respect to both point-of-care and laboratory testing.
Collapse
|
9
|
Pogorelov A, Ipatova L, Pogorelova M, Kuznetsov A, Suvorov O. Properties of serum albumin in electrolyzed water. Foods and Raw Materials 2022. [DOI: 10.21603/2308-4057-2022-1-117-126] [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: 11/16/2022] Open
Abstract
Introduction. Electrochemical activation of water controls the physicochemical parameters of aquatic food environment without any reagents. Electrolyzed water affects the properties of macronutrient solutions. The present research studied the effect of anodic and cathodic fractions of electrochemically activated water on protein molecules and their interaction patterns.
Study objects and methods. The study featured bovine serum albumin and its properties in electrochemically activated water with nonstandard redox and acidity values. The aqueous solution of bovine serum albumin was studied by viscometry, UV spectrometry, time-of-flight secondary ion mass spectrometry, and electrophoresis.
Results and discussion. By knowing the interaction patterns of electrochemically activated water and protein molecules, food producers can control the properties of biological raw materials. Bovine serum albumin was studied in metastable fractions of electrochemically activated water obtained in the anode or cathode chamber of an electrochemical reactor. Both fractions of electrochemically activated water appeared to modify the properties of bovine serum albumin. The oxidized fraction of electrochemically activated water (anolyte) converted the protein solution into a more homogeneous molecular composition. The solution of bovine serum albumin in the reduced fraction of electrochemically activated water (catholyte) had an abnormally negative redox potential (–800 mV). The aqueous solution of bovine serum albumin in catholyte retained its initial viscosity for a long time, and its level was lower than in the control sample. This effect was consistent with other physicochemical characteristics of the solution.
Conclusion. The research revealed some patterns that make it possible to apply reagent-free viscosity regulation to protein media in the food industry.
Collapse
Affiliation(s)
- Alexander Pogorelov
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences
| | - Larisa Ipatova
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences
| | - Maria Pogorelova
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences
| | - Alexander Kuznetsov
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences
| | - Oleg Suvorov
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences
| |
Collapse
|
10
|
Wu C, Barkova D, Komarova N, Offenhäusser A, Andrianova M, Hu Z, Kuznetsov A, Mayer D. Highly selective and sensitive detection of glutamate by an electrochemical aptasensor. Anal Bioanal Chem 2021; 414:1609-1622. [PMID: 34783880 DOI: 10.1007/s00216-021-03783-w] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/21/2021] [Accepted: 11/09/2021] [Indexed: 01/03/2023]
Abstract
An electrochemical aptamer-based sensor was developed for glutamate, the major excitatory neurotransmitter in the central nervous system. Determining glutamic acid release and glutamic acid levels is crucial for studying signal transmission and for diagnosing pathological conditions in the brain. Glutamic acid-selective oligonucleotides were isolated from an ssDNA library using the Capture-SELEX protocol in complex medium. The selection permitted the isolation of an aptamer 1d04 with a dissociation constant of 12 µM. The aptamer sequence was further used in the development of an electrochemical aptamer sensor. For this purpose, a truncated aptamer sequence named glu1 was labelled with a ferrocene redox tag at the 3'-end and immobilized on a gold electrode surface via Au-thiol bonds. Using 6-mercapto-1-hexanol as the backfill, the sensor performance was characterized by alternating current voltammetry. The glu1 aptasensor showed a limit of detection of 0.0013 pM, a wide detection range between 0.01 pM and 1 nM, and good selectivity for glutamate in tenfold diluted human serum. With this enzyme-free aptasensor, the highly selective and sensitive detection of glutamate was demonstrated, which possesses great potential for implementation in microelectrodes and for in vitro as well as in vivo monitoring of neurotransmitter release.
Collapse
Affiliation(s)
- Changtong Wu
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Faculty I, RWTH Aachen University, 52062, Aachen, Germany
| | - Daria Barkova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Natalia Komarova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Andreas Offenhäusser
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Faculty I, RWTH Aachen University, 52062, Aachen, Germany
| | - Mariia Andrianova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Ziheng Hu
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Alexander Kuznetsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia.
| | - Dirk Mayer
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.
| |
Collapse
|
11
|
Mal G, Kuznetsov A. The drug response of pcsk9 inhibitors in the correction of the lipid transport system in patients with ischemic heart disease with diabetes type II. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
12
|
N P, Cole IS, Kuznetsov A, Thomas KRJ, K B, Manickam S. Experimental and DFT studies of gadolinium decorated graphene oxide materials for their redox properties and as a corrosion inhibition barrier layer on Mg AZ13 alloy in a 3.5% NaCl environment. RSC Adv 2021; 11:22095-22105. [PMID: 35480794 PMCID: PMC9034221 DOI: 10.1039/d1ra03495b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/05/2021] [Accepted: 06/11/2021] [Indexed: 01/04/2023] Open
Abstract
Magnesium alloys are broadly used worldwide in various applications; however, the serious disadvantage of these alloys are subject to corrosion and in aggressive/corrosive environments. A coating containing gadolinium-based composite materials can increase the alloy protection by strong electron transfer between the host alloy and the lanthanide-containing protective layer. This investigation aims to develop a Gd nanorod functionalised graphene oxide material as a corrosion inhibition barrier on the Mg alloy surface. The obtained functional materials were characterised by various spectroscopy techniques. The corrosion inhibition and composite material stability were studied by the electrochemical methods. The electrochemical stability was shown to increase with the applied current. The hydrogen evolution constantly increased and the corrosion inhibition significantly improved. Also, the computational studies of the material were performed, and their results support the experimental findings. Overall, the resultant composite material's corrosion resistance and cyclic stability are improved, and it could be used as a sodium-ion battery cathode material due to its high reversibility. Gadolinium electrostatically interacts with the epoxy group of graphene oxide. Non-bonding electrons of graphene oxide enhance electron transfer between the polarized metal alloy surface and product alloy surface from the corrosive medium.![]()
Collapse
Affiliation(s)
- Palaniappan N
- School of Chemical Science, Central University of Gujarat India
| | - Ivan S Cole
- Advanced Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Victoria 3100 Australia
| | - A Kuznetsov
- Department of Chemistry, Universidad Técnica Federico Santa Maria Campus Vitacura Santiago Chile
| | - K R Justin Thomas
- Department of Chemistry, Organic Materials Laboratory, Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Balasubramanian K
- Department of Materials Engineering, Defence Institute of Advanced Technology (DU) Girinagar Pune India
| | - Sivakumar Manickam
- Faculty of Engineering, Petroleum and Chemical Engineering, Universiti Teknologi Brunei Bandar Seri Begawan Be1410 Brunei Darussalam
| |
Collapse
|
13
|
Komarova N, Barkova D, Kuznetsov A. Implementation of High-Throughput Sequencing (HTS) in Aptamer Selection Technology. Int J Mol Sci 2020; 21:E8774. [PMID: 33233573 PMCID: PMC7699794 DOI: 10.3390/ijms21228774] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
Aptamers are nucleic acid ligands that bind specifically to a target of interest. Aptamers have gained in popularity due to their high potential for different applications in analysis, diagnostics, and therapeutics. The procedure called systematic evolution of ligands by exponential enrichment (SELEX) is used for aptamer isolation from large nucleic acid combinatorial libraries. The huge number of unique sequences implemented in the in vitro evolution in the SELEX process imposes the necessity of performing extensive sequencing of the selected nucleic acid pools. High-throughput sequencing (HTS) meets this demand of SELEX. Analysis of the data obtained from sequencing of the libraries produced during and after aptamer isolation provides an informative basis for precise aptamer identification and for examining the structure and function of nucleic acid ligands. This review discusses the technical aspects and the potential of the integration of HTS with SELEX.
Collapse
Affiliation(s)
- Natalia Komarova
- Scientific-Manufacturing Complex Technological Centre, 1–7 Shokin Square, Zelenograd, 124498 Moscow, Russia; (D.B.); (A.K.)
| | | | | |
Collapse
|
14
|
Kuznetsov A. On the Motion of Agents with Directional Antennae. Swarm Intelligence 2020. [DOI: 10.1201/9780429028618-9] [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: 11/11/2022]
|
15
|
Borgersen J, Vines L, Frodason YK, Kuznetsov A, von Wenckstern H, Grundmann M, Allen M, Zúñiga-Pérez J, Johansen KM. Experimental exploration of the amphoteric defect model by cryogenic ion irradiation of a range of wide band gap oxide materials. J Phys Condens Matter 2020; 32:415704. [PMID: 32756022 DOI: 10.1088/1361-648x/abac8b] [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] [Received: 05/05/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
The evolution of electrical resistance as function of defect concentration is examined for the unipolarn-conducting oxides CdO,β-Ga2O3, In2O3, SnO2and ZnO in order to explore the predictions of the amphoteric defect model. Intrinsic defects are introduced by ion irradiation at cryogenic temperatures, and the resistance is measured in-situ by current-voltage sweeps as a function of irradiation dose. Temperature dependent Hall effect measurements are performed to determine the carrier concentration and mobility of the samples before and after irradiation. After the ultimate irradiation step, the Ga2O3and SnO2samples have both turned highly resistive. In contrast, the In2O3and ZnO samples are ultimately found to be less resistive than prior to irradiation, however, they both show an increased resistance at intermediate doses. Based on thermodynamic defect charge state transitions computed by hybrid density functional theory, a model expanding on the current amphoteric defect model is proposed.
Collapse
Affiliation(s)
- J Borgersen
- Department of Physics, University of Oslo, Norway
- Centre for Materials Science and Nanotechnology, University of Oslo, Norway
| | - L Vines
- Department of Physics, University of Oslo, Norway
- Centre for Materials Science and Nanotechnology, University of Oslo, Norway
| | - Y K Frodason
- Department of Physics, University of Oslo, Norway
- Centre for Materials Science and Nanotechnology, University of Oslo, Norway
| | - A Kuznetsov
- Department of Physics, University of Oslo, Norway
- Centre for Materials Science and Nanotechnology, University of Oslo, Norway
| | - H von Wenckstern
- Felix Bloch institute for Solid State Physics, Fakultät für Physik und Geowissenschaften, Universität Leipzig, Germany
| | - M Grundmann
- Felix Bloch institute for Solid State Physics, Fakultät für Physik und Geowissenschaften, Universität Leipzig, Germany
| | - M Allen
- Department of Electrical and Computer Engineering, University of Canterbury, New Zealand
| | - J Zúñiga-Pérez
- Centre de Recherche sur l'Hétéro-Epitaxie et ses Applications (CRHEA), CNRS, Université Côte d'Azur, France
| | - K M Johansen
- Department of Physics, University of Oslo, Norway
- Centre for Materials Science and Nanotechnology, University of Oslo, Norway
| |
Collapse
|
16
|
Palaniappan N, Cole IS, Damodaran K, Kuznetsov A, Justin Thomas KR, K B. Experimental and DFT studies of porous carbon covalently functionalized by polyaniline as a corrosion inhibition barrier on nickel-based alloys in acidic media. RSC Adv 2020; 10:12151-12165. [PMID: 35497596 PMCID: PMC9050735 DOI: 10.1039/d0ra00593b] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/15/2020] [Indexed: 11/29/2022] Open
Abstract
In acidic medium, nickel alloys severely suffer from long term corrosion problems as a result of the breakdown of their passivating oxide. The present study considers polyaniline functionalized fish-scale graphitic carbon as an anticorrosion coating on the nickel alloy surface. The fish-scale porous carbon materials are characterized by XRD, ATR-FITR, UV, Raman, TGA, SS NMR, FESEM, and TEM methods. The surface of the alloy is covalently bound with a polyaniline long chain protonated polymer so that the polyaniline functionalized honeycomb fish-scale carbon structure can exchange electrons with the metal surface. The corrosion inhibition efficiency has been investigated in different acid media like sulfuric acid and hydrochloric acid by electrochemical methods. Polyaniline functionalized porous carbon showed in 1 M H2SO4 inhibition efficiency around 64% and in 1 M HCl inhibition efficiency was around 74%. The inhibition efficiency was higher in HCl because chloride ions were not able to penetrate the graphitic sheet. The novelty of this coating is in the fact that the polyaniline functionalized porous carbon has high conductivity and is electrochemically stable in acidic medium. It is able to donate electrons to the polarized metal surface. Polyaniline functionalized fish scale carbon chemisorption on 111 nickel alloy surface by polyaniline polaron nitrogen free electron.![]()
Collapse
Affiliation(s)
- N Palaniappan
- School of Chemical Sciences, Central University of Gujarat India
| | - I S Cole
- Advance Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Victoria 3100 Australia
| | - K Damodaran
- Chemistry Department, Pittsburgh University USA
| | - A Kuznetsov
- Department of Chemistry, Universidad Técnica Federico Santa Maria, Campus Vitacura Santiago Chile
| | - K R Justin Thomas
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee Roorkee 247667 India
| | | |
Collapse
|
17
|
Järv J, Kuznetsov A. Mapping of ACE2 binding site on SARS-CoV-2 spike protein S1: docking study with peptides. Proceedings of the Estonian Academy of Sciences 2020. [DOI: 10.3176/proc.2020.3.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
18
|
Järv J, Kuznetsov A. Mapping the ACE2 binding site on the SARS-CoV-2 spike protein S1: molecular recognition pattern. Proceedings of the Estonian Academy of Sciences 2020. [DOI: 10.3176/proc.2020.4.09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
19
|
Abstract
Aptamers are small oligonucleotides that are capable of binding specifically to a target, with impressive potential for analysis, diagnostics, and therapeutics applications. Aptamers are isolated from large nucleic acid combinatorial libraries using an iterative selection process called SELEX (Systematic Evolution of Ligands by EXponential enrichment). Since being implemented 30 years ago, the SELEX protocol has undergone many modifications and improvements, but it remains a laborious, time-consuming, and costly method, and the results are not always successful. Each step in the aptamer selection protocol can influence its results. This review discusses key technical points of the SELEX procedure and their influence on the outcome of aptamer selection.
Collapse
Affiliation(s)
- Natalia Komarova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow 124498, Russia.
| | - Alexander Kuznetsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow 124498, Russia.
| |
Collapse
|
20
|
Dudinova A, Rybalko N, Vinogradov O, Kuznetsov A. Cerebral embolism in the surgical treatment of stenotic lesions of the brachiocephalic arteries. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
21
|
Kuznetsov A, Smelysheva L, Arkhipova O, Moskovkin A, Sazhina N. STOMACH SECRETORY FUNCTION UNDER MUSCLE LOAD IN THE CONDITIONS OF PHARMACOLOGICAL BLOCADE OF M-CHOLINORECEPTORS AND β-ADRENOCEPTORS. hsm 2019. [DOI: 10.14529/hsm19s107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Aim. The article deals with establishing the effect of muscle load on the stomach secretory function in the conditions of partial pharmacological blockade of M-cholinoreceptors and β-adrenoceptors in patients with duodenal acidification. Materials and methods. 22 males aged 18–23 years participated in the study. The stomach secretory function at rest under a 30-minute cycle ergometer load of 36 900 kgm combined with a partial pharmacological blockade of M-cholinoreceptors (1.5 mg per kg of body mass) and β-adrenoceptors (0.6 mg obsidan per kg of body mass) was studied using gastric and gastroduodenal intubation. Results. The blockade of M-cholinoreceptors at muscle rest provoked a noticeable decrease in the total content of electrolytes (p < 0.01), enzymes (p < 0.001), HCL (p < 0.001), and proteolytic activity (p < 0.001) in gastric juice. The combined activity of atropine and physical load in the conditions of duodenal acidification inhibited the amount of secretion significantly to 49.9 ± 11.1%, HCl to 29.7 ± 9.4%, pepsinogen to 19.8 ± 7.4% (p ˂ 0.001). The blockade of β-adrenoceptors significantly decreased the stomach secretory function in the conditions of basal secretion and duodenal acidification. After using a 10% dried cabbage decoction as a stimulator we registered an increase in the amount of secretion up to 141.1 ± 12.2%, HCl discharge – to 186.3 ± 21.9%, and pepsinogen – to 188.5 ± 20.4%. The same tendency was registered for the cycle ergometer test in the conditions of the blockade of β-adrenoceptors. Conclusion. The effect of muscle load on the stomach secretory function contributes significantly to the role of the sympathetic nervous system. Duodenal acidification in the conditions of the blockade of β-adrenoceptors intensifies the inhibitory effect, while stimulation with a dry cabbage decoction improves the stomach secretory function.
Collapse
|
22
|
Erst A, Luferov A, Troshkina V, Shaulo D, Kuznetsov A, Xiang K, Wang W. Trolliusaustrosibiricus (Ranunculaceae), a new species from South Siberia. PhytoKeys 2019; 115:83-92. [PMID: 30728741 PMCID: PMC6361874 DOI: 10.3897/phytokeys.115.30863] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/03/2019] [Indexed: 05/22/2023]
Abstract
Trolliusaustrosibiricus Erst & Luferov, sp. nov., a new species from Russian South Siberia is described and illustrated. This new species is endemic to Western and Central Siberia. Morphologically, it is close to the East Asian species T.chinensis and T.macropetalus. However, it differs from the aforementioned species due to the morphology of the rhizomes, aerial shoots, sepals and petals. This species is also distinguished from T.asiaticus, which is widespread in Russia (Western and Eastern Siberia), Mongolia, China, north-eastern Kazakhstan and in the northeast of the European part of Russia, in having a smaller number of sepals, longer persistent styles and petals longer than sepals. In addition, an identification key for all Russian species is given and all species have been discussed.
Collapse
Affiliation(s)
- Andrey Erst
- Laboratory Herbarium (NS), Central Siberian Botanical Garden, Russian Academy of Sciences, Zolotodolinskaya st. 101, 630090, Novosibirsk, RussiaCentral Siberian Botanical Garden, Russian Academy of SciencesNovosibirskRussia
- Laboratory Herbarium (TK), Tomsk State University, Lenin st. 36, 634050, Tomsk, RussiaTomsk State UniversityTomskRussia
| | - Alexander Luferov
- I.M. Sechenov First Moscow State Medical University, Izmailovsky Boulevard, 8, 105043, Moscow, RussiaI.M. Sechenov First Moscow State Medical UniversityMoscowRussia
| | - Victoria Troshkina
- Laboratory Herbarium (NS), Central Siberian Botanical Garden, Russian Academy of Sciences, Zolotodolinskaya st. 101, 630090, Novosibirsk, RussiaCentral Siberian Botanical Garden, Russian Academy of SciencesNovosibirskRussia
| | - Dmitry Shaulo
- Laboratory Herbarium (NS), Central Siberian Botanical Garden, Russian Academy of Sciences, Zolotodolinskaya st. 101, 630090, Novosibirsk, RussiaCentral Siberian Botanical Garden, Russian Academy of SciencesNovosibirskRussia
| | - Alexander Kuznetsov
- Laboratory Herbarium (TK), Tomsk State University, Lenin st. 36, 634050, Tomsk, RussiaTomsk State UniversityTomskRussia
| | - Kunli Xiang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, ChinaInstitute of Botany, Chinese Academy of SciencesBeijingChina
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, ChinaUniversity of Chinese Academy of SciencesBeijingChina
| | - Wei Wang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, ChinaInstitute of Botany, Chinese Academy of SciencesBeijingChina
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, ChinaUniversity of Chinese Academy of SciencesBeijingChina
| |
Collapse
|
23
|
Tulepov MI, Abdrakova FY, Sassykova LR, Mansurov ZA, Kuznetsov A, Pustovalov IA, Spanova GA, Tolep DM, Elouadi B. Modeling of the explosion of pyroxylin or combustion of the pyrotechnic composition. Int j biol chem 2019. [DOI: 10.26577/ijbch-2019-i2-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
24
|
Delgado MM, Tikhonov G, Meyke E, Babushkin M, Bespalova T, Bondarchuk S, Esengeldenova A, Fedchenko I, Kalinkin Y, Knorre A, Kosenkov G, Kozsheechkin V, Kuznetsov A, Larin E, Mirsaitov D, Prokosheva I, Rozhkov Y, Rykov A, Seryodkin IV, Shubin S, Sibgatullin R, Sikkila N, Sitnikova E, Sultangareeva L, Vasin A, Yarushina L, Kurhinen J, Penteriani V. The seasonal sensitivity of brown bear denning phenology in response to climatic variability. Front Zool 2018; 15:41. [PMID: 30410564 PMCID: PMC6211405 DOI: 10.1186/s12983-018-0286-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [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: 03/20/2018] [Accepted: 09/27/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND For brown bears (Ursus arctos), hibernation is a critical part of the annual life cycle because energy savings during hibernation can be crucial for overwintering, and females give birth to cubs at that time. For hibernation to be a useful strategy, timing is critical. However, environmental conditions vary greatly, which might have a negative effect on the functionality of the evolved biological time-keeping. Here, we used a long-term dataset (69 years) on brown bear denning phenology recorded in 12 Russian protected areas and quantified the phenological responses to variation in temperature and snow depth. Previous studies analyzing the relationship between climate and denning behavior did not consider that the brown bear response to variation in climatic factors might vary through a period preceding den entry and exit. We hypothesized that there is a seasonal sensitivity pattern of bear denning phenology in response to variation in climatic conditions, such that the effect of climatic variability will be pronounced only when it occurs close to den exit and entry dates. RESULTS We found that brown bears are most sensitive to climatic variations around the observed first den exit and last entry dates, such that an increase/decrease in temperature in the periods closer to the first den exit and last entry dates have a greater influence on the denning dates than in other periods. CONCLUSIONS Our study shows that climatic factors are modulating brown bear hibernation phenology and provide a further structuring of this modulation. The sensitivity of brown bears to changes in climatic factors during hibernation might affect their ability to cope with global climate change. Therefore, understanding these processes will be essential for informed management of biodiversity in a changing world.
Collapse
Affiliation(s)
- M M Delgado
- Research Unit of Biodiversity (UMIB, UO-CSIC-PA), Oviedo University, Campus Mieres, 33600 Mieres, Spain
| | - G Tikhonov
- University of Helsinki, PO BOX 65, FI-00014 Helsinki, Finland
| | - E Meyke
- EarthCape OY, Viikinkaari 6, 00790 Helsinki, Finland
| | - M Babushkin
- Darwin Nature Biosphere Reserve, Borok, 44 p/o Ploskovo, Cherepovets District, Vologda Region Russian Federation 162723
| | - T Bespalova
- Kondinskie Lakes National Park, Komsomolski st., 5, City Sovietsky, Hanty-Mansijsk District Russian Federation 628240
| | - S Bondarchuk
- Sikhote-Alin State Nature Biosphere Reserve named after K.G. Abramov, Partizanskaya 44, Primorsky krai, Terney Russian Federation 692150
| | - A Esengeldenova
- Kondinskie Lakes National Park, Komsomolski st., 5, City Sovietsky, Hanty-Mansijsk District Russian Federation 628240
| | - I Fedchenko
- Pinezhsky State Nature Reserve, Pervomayskaya Street, 123 А, Arhangel Region, Pinezkiy District, Pinega Russian Federation 164610
| | - Y Kalinkin
- Altai State Nature Biosphere Reserve, Naberezhnyi st., 1, Gorno-Altaysk, Altai Republic Russian Federation 649000
| | - A Knorre
- State Nature Reserve Stolby, Kariernaya 26, Krasnoyarsk, Krasnoyarsk Region Russian Federation 660006
| | - G Kosenkov
- Smolenskoe Poozerje National Park, Gurevitch street 19, Demidovskiy District, Przhevalskoe, Smolensk Region Russian Federation 216270
| | - V Kozsheechkin
- State Nature Reserve Stolby, Kariernaya 26, Krasnoyarsk, Krasnoyarsk Region Russian Federation 660006
| | - A Kuznetsov
- Darwin Nature Biosphere Reserve, Borok, 44 p/o Ploskovo, Cherepovets District, Vologda Region Russian Federation 162723
| | - E Larin
- Visimsky Nature Biosphere Reserve, Stepana Razina, 23, Kirovgrad, Russian Federation 624140
| | - D Mirsaitov
- State Nature Reserve Malaya Sosva, Lenina str., 46, Sovetskiy, Tjumen Region Russian Federation 628242
| | - I Prokosheva
- State Nature Reserve Vishersky, Gagarina Street 36 B, Krasnovishersk, Perm Region Russian Federation 618590
| | - Y Rozhkov
- State Nature Reserve Olekminsky, Filatova 6, Olekminsk, Republic Sakha Russian Federation 678100
| | - A Rykov
- Pinezhsky State Nature Reserve, Pervomayskaya Street, 123 А, Arhangel Region, Pinezkiy District, Pinega Russian Federation 164610
| | - I V Seryodkin
- Pacific Geographical Institute, Far-Eastern Branch, Russian Academy of Sciences, 7 Radio Street, Vladivostok, Russian Federation 690041
- Far Eastern Federal University, 8 Sukhanova Street, Vladivostok, Russian Federation 690091
| | - S Shubin
- State Nature Reserve Nurgush, Lenina Street, 129a, Kirov, Russian Federation 610002
| | - R Sibgatullin
- Visimsky Nature Biosphere Reserve, Stepana Razina, 23, Kirovgrad, Russian Federation 624140
| | - N Sikkila
- Kostomuksha Nature Reserve, Priozernaya Street, 2, Kostomuksha, Karelia Republic Russian Federation 186930
| | - E Sitnikova
- Bryansk Forest Nature Reserve, Nerussa St., Zapovednaya Street, 2, Suzemka District, Bryansk Region Russian Federation 242180
| | - L Sultangareeva
- National Park Bashkirija, Nurgush, Abubakirova 1, Meleuzovskiy District, Bashkortostan Republic Russian Federation 453870
| | - A Vasin
- State Nature Reserve Malaya Sosva, Lenina str., 46, Sovetskiy, Tjumen Region Russian Federation 628242
| | - L Yarushina
- Darwin Nature Biosphere Reserve, Borok, 44 p/o Ploskovo, Cherepovets District, Vologda Region Russian Federation 162723
| | - J Kurhinen
- University of Helsinki, PO BOX 65, FI-00014 Helsinki, Finland
- Forest Research Institute, Karelian Research Centre, Russian Academy of Sciences, Puskinskaya Street, Petrozavodsk, Russian Federation 11
| | - V Penteriani
- Research Unit of Biodiversity (UMIB, UO-CSIC-PA), Oviedo University, Campus Mieres, 33600 Mieres, Spain
- Pyrenean Institute of Ecology (IPE), C.S.I.C., Avda. Montañana 1005, 50059 Zaragoza, Spain
| |
Collapse
|
25
|
Smelysheva L, Kuznetsov A. BLOOD SERUM DIGESTIVE ENZYMES ACTIVITY IN PERSONS WITH A DIFFERENT TONE OF THE VEGETATIVE SYSTEM UNDER PHYSICAL LOAD. HSM 2018. [DOI: 10.14529/hsm180203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
26
|
Andrianova M, Komarova N, Grudtsov V, Kuznetsov E, Kuznetsov A. Amplified Detection of the Aptamer-Vanillin Complex with the Use of Bsm DNA Polymerase. Sensors (Basel) 2017; 18:E49. [PMID: 29278396 PMCID: PMC5795474 DOI: 10.3390/s18010049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 12/01/2022]
Abstract
The electrochemical detection of interactions between aptamers and low-molecular-weight targets often lacks sensitivity. Signal amplification improves the detection of the aptamer-analyte complex; Bsm DNA polymerase was used to amplify the signal from the interaction of vanillin and its aptamer named Van_74 on an ion-sensitive field-effect transistor (ISFET)-based biosensor. The aptamer was immobilized on the ISFET sensitive surface. A short DNA probe was hybridized with the aptamer and dissociated from it upon vanillin addition. A free probe interacted with a special DNA molecular beacon initiated the Bsm DNA polymerase reaction that was detected by ISFET. A buffer solution suitable for both aptamer action and Bsm DNA polymerase activity was determined. The ISFET was shown to detect the Bsm DNA polymerase reaction under the selected conditions. Vanillin at different concentrations (1 × 10-6-1 × 10-8 M) was detected using the biosensor with signal amplification. The developed detection system allowed for the determination of vanillin, starting at a 10-8 M concentration. Application of the Bsm DNA polymerase resulted in a 15.5 times lower LoD when compared to the biosensor without signal amplification (10.1007/s00604-017-2586-4).
Collapse
Affiliation(s)
- Mariia Andrianova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, 124498 Moscow, Russia.
| | - Natalia Komarova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, 124498 Moscow, Russia.
| | - Vitaliy Grudtsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, 124498 Moscow, Russia.
| | - Evgeniy Kuznetsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, 124498 Moscow, Russia.
| | - Alexander Kuznetsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, 124498 Moscow, Russia.
| |
Collapse
|
27
|
Kuznetsov A, Komarova N, Andrianova M, Grudtsov V, Kuznetsov E. Aptamer based vanillin sensor using an ion-sensitive field-effect transistor. Mikrochim Acta 2017; 185:3. [DOI: 10.1007/s00604-017-2586-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 11/21/2017] [Indexed: 02/07/2023]
|
28
|
Burdakov A, Azhannikov A, Astrelin V, Beklemishev A, Burmasov V, Derevyankin G, Ivanenko V, Ivanov I, Ivantsivsky M, Kandaurov I, Konyukhov V, Kotelnikov I, Kovenya V, Kozlinskaya T, Kuklin K, Kuznetsov A, Kuznetsov S, Lotov K, Timofeev I, Makarov A, Mekler K, Nikolaev V, Popov S, Postupaev V, Polosatkin S, Rovenskikh A, Shoshin A, Shvab I, Sinitsky S, Sulyaev Y, Stepanov V, Trunyov Y, Vyacheslavov L, Zhukov V, Zubairov E. Plasma Heating and Confinement in GOL-3 Multi Mirror Trap. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1327] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. Burdakov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - A. Azhannikov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Astrelin
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - A. Beklemishev
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Burmasov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - G. Derevyankin
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Ivanenko
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - I. Ivanov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - M. Ivantsivsky
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - I. Kandaurov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Konyukhov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - I. Kotelnikov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Kovenya
- Institute of Computational Technologies, 630090, Novosibirsk Russia
| | - T. Kozlinskaya
- Institute of Computational Technologies, 630090, Novosibirsk Russia
| | - K. Kuklin
- Novosibirsk State University, 630090, Novosibirsk, Russia
| | - A. Kuznetsov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - S. Kuznetsov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - K. Lotov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - I. Timofeev
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - A. Makarov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - K. Mekler
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Nikolaev
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - S. Popov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Postupaev
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - S. Polosatkin
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - A. Rovenskikh
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - A. Shoshin
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - I. Shvab
- Institute of Computational Technologies, 630090, Novosibirsk Russia
| | - S. Sinitsky
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - Yu. Sulyaev
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Stepanov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - Yu. Trunyov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - L. Vyacheslavov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| | - V. Zhukov
- Institute of Computational Technologies, 630090, Novosibirsk Russia
| | - Ed. Zubairov
- Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia
| |
Collapse
|
29
|
Puchnin K, Andrianova M, Kuznetsov A, Kovalev V. Field-effect transition sensor for KI detection based on self-assembled calixtube monolayers. Biosens Bioelectron 2017; 98:140-146. [PMID: 28668772 DOI: 10.1016/j.bios.2017.06.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 03/28/2017] [Revised: 06/11/2017] [Accepted: 06/25/2017] [Indexed: 12/16/2022]
Abstract
A series of novel calixarene-based tubes comprising different numbers of silatrane anchoring groups was synthesized. For the first time, a self-assembled monolayer (SAM) derived from calixtubes was formed on a SiO2 surface. The formation of the SAM was confirmed by X-ray photoelectron spectroscopy, scanning electron microscopy-energy dispersive X-ray analysis, and contact angle measurements. Modification of the sensitive surface of a conventional ion-selective field effect transistor (ISFET) with the afforded SAM resulted in the production of a KI-sensitive sensor. This sensor selectively determined KI compare to different alkali metal iodides: NaI, RbI, CsI; also investigation of different potassium salts (acetate, iodide, nitrate, chloride, dihydrophosphate, perchlorate) showed the highest response to KI. This sensor was successfully employed to determine the presence of KI in artificial saliva with a limit of detection of ~3 × 10-8 М. In addition, it was found that the detection limit of the sensor could be increased by combining the sensor with a microfluidic system. Due to the obtained sensor sensitivity and its ability to detect KI in artificial saliva, we could conclude that this sensor shows great potential for application in the determination of KI in different media, such as the human body and in biological liquids, such as saliva or urine.
Collapse
Affiliation(s)
- Kirill Puchnin
- Department of Chemistry, M.V. Lomonosov Moscow State University, 1-3 Leninskiye Gory, GSP-1, Moscow 119991, Russia; Scientific-Manufacturing Complex Technological Center, 1-7 Shokin Square, Zelenograd, Moscow 124498, Russia.
| | - Mariia Andrianova
- Scientific-Manufacturing Complex Technological Center, 1-7 Shokin Square, Zelenograd, Moscow 124498, Russia
| | - Alexander Kuznetsov
- Scientific-Manufacturing Complex Technological Center, 1-7 Shokin Square, Zelenograd, Moscow 124498, Russia
| | - Vladimir Kovalev
- Department of Chemistry, M.V. Lomonosov Moscow State University, 1-3 Leninskiye Gory, GSP-1, Moscow 119991, Russia
| |
Collapse
|
30
|
Kuznetsov A, Moskovkin A, Shalabodov A. INFLUENCE OF MUSCLE AND EMOTIONAL TENSION ON VOLUMES OF SALIVA, GASTRIC AND PANCREATIC JUICE, AND URINE IN PEOPLE WITH DIFFERENT LEVELS OF DAILY PHYSICAL ACTIVITY. HSM 2017. [DOI: 10.14529/hsm170301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
31
|
Kuznetsov A, Drobyshev A, Zaslavskiy I. Modelling of surgical method of endoscopic temporomandibular joint disc fixation using harpoon thread. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.1212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
32
|
Kuznetsov A, Savin V. Neutrino-electron scattering in a dense strongly magnetized plasma. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715805007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
33
|
Kuznetsov A, Rumyantsev D, Shlenev D. Neutrino photoproduction on the electron in dense magnetized medium. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715805008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
|
35
|
Kasatov D, Koshkarev A, Kuznetsov A, Makarov A, Ostreinov Y, Shchudlo I, Sorokin I, Sycheva T, Taskaev S, Zaidi L. The accelerator neutron source for boron neutron capture therapy. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/769/1/012064] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
36
|
Kuznetsov A, Vasilyeva Y, Smelysheva L, Kaigorodtsev A. CORRELATION BETWEEN CONCENTRATION OF SEX HORMONES AND PSYCHOPHYSIOLOGICAL INDICATORS AT REST AND AFTER EXERCISE IN 18-23-YEAR-OLD GIRLS WITH DIFFERENT VEGETATIVE NERVOUS SYSTEM TONES. HSM 2016. [DOI: 10.14529/hsm160402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
37
|
Kokh A, Simonova E, Maillard A, Maillard R, Svetlichnyi V, Andreev Y, Kragzhda A, Kuznetsov A, Kokh K. Growth and dichroic properties of LiBa12
(BO3
)7
F4
crystal. Crystal Research and Technology 2016. [DOI: 10.1002/crat.201600159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- A. Kokh
- Sobolev Institute of Geology and Mineralogy SB RAS; 630090 Novosibirsk Russia
| | - E. Simonova
- Sobolev Institute of Geology and Mineralogy SB RAS; 630090 Novosibirsk Russia
| | - A. Maillard
- Laboratoire Matériaux Optiques; Photonique et Systèmes. Lorraine University and Supelec; 57070 Metz France
| | - R. Maillard
- Laboratoire Matériaux Optiques; Photonique et Systèmes. Lorraine University and Supelec; 57070 Metz France
| | - V. Svetlichnyi
- Siberian Physical-Technical Institute of Tomsk State University; 634050 Tomsk Russia
- Institute of High Current Electronics SB RAS; 63055 Tomsk Russia
| | - Yu. Andreev
- Siberian Physical-Technical Institute of Tomsk State University; 634050 Tomsk Russia
- Institute of High Current Electronics SB RAS; 63055 Tomsk Russia
- Institute of Monitoring of Climatic and Ecological Systems SB RAS; 634055 Tomsk Russia
| | - A. Kragzhda
- Sobolev Institute of Geology and Mineralogy SB RAS; 630090 Novosibirsk Russia
- Novosibirsk State University; 630090 Novosibirsk Russia
| | - A. Kuznetsov
- Sobolev Institute of Geology and Mineralogy SB RAS; 630090 Novosibirsk Russia
- Novosibirsk State University; 630090 Novosibirsk Russia
| | - K. Kokh
- Sobolev Institute of Geology and Mineralogy SB RAS; 630090 Novosibirsk Russia
- Institute of High Current Electronics SB RAS; 63055 Tomsk Russia
- Novosibirsk State University; 630090 Novosibirsk Russia
| |
Collapse
|
38
|
Abstract
In this paper we study the Wiener-Hopf factorization for a class of Lévy processes with double-sided jumps, characterized by the fact that the density of the Lévy measure is given by an infinite series of exponential functions with positive coefficients. We express the Wiener-Hopf factors as infinite products over roots of a certain transcendental equation, and provide a series representation for the distribution of the supremum/infimum process evaluated at an independent exponential time. We also introduce five eight-parameter families of Lévy processes, defined by the fact that the density of the Lévy measure is a (fractional) derivative of the theta function, and we show that these processes can have a wide range of behavior of small jumps. These families of processes are of particular interest for applications, since the characteristic exponent has a simple expression, which allows efficient numerical computation of the Wiener-Hopf factors and distributions of various functionals of the process.
Collapse
|
39
|
Abstract
In this paper we consider the class of Lévy processes that can be written as a Brownian motion time changed by an independent Lévy subordinator. Examples in this class include the variance-gamma (VG) model, the normal-inverse Gaussian model, and other processes popular in financial modeling. The question addressed is the precise relation between the standard first passage time and an alternative notion, which we call the first passage of the second kind, as suggested by Hurd (2007) and others. We are able to prove that the standard first passage time is the almost-sure limit of iterations of the first passage of the second kind. Many different problems arising in financial mathematics are posed as first passage problems, and motivated by this fact, we are led to consider the implications of the approximation scheme for fast numerical methods for computing first passage. We find that the generic form of the iteration can be competitive with other numerical techniques. In the particular case of the VG model, the scheme can be further refined to give very fast algorithms.
Collapse
|
40
|
Plyuta V, Lipasova V, Popova A, Koksharova O, Kuznetsov A, Szegedi E, Chernin L, Khmel I. Influence of volatile organic compounds emitted byPseudomonasandSerratiastrains onAgrobacterium tumefaciensbiofilms. APMIS 2016; 124:586-94. [DOI: 10.1111/apm.12547] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 03/30/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Vladimir Plyuta
- Institute of Molecular Genetics; Russian Academy of Sciences; Moscow Russia
| | - Valentina Lipasova
- Institute of Molecular Genetics; Russian Academy of Sciences; Moscow Russia
| | - Alexandra Popova
- Institute of Molecular Genetics; Russian Academy of Sciences; Moscow Russia
| | - Olga Koksharova
- Institute of Molecular Genetics; Russian Academy of Sciences; Moscow Russia
- M.V. Lomonosov Moscow State University; A.N. Belozersky Institute of Physico-Chemical Biology; Moscow Russia
| | | | - Erno Szegedi
- National Agricultural Research and Innovation Centre; Research Institute for Viticulture and Enology; Experimental Station of Kecskemét; Kecskemét Hungary
| | - Leonid Chernin
- Department of Plant Pathology and Microbiology; The Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
| | - Inessa Khmel
- Institute of Molecular Genetics; Russian Academy of Sciences; Moscow Russia
| |
Collapse
|
41
|
Blokhina V, Nikolaev S, Kuznetsov A, Smirnov N, Melikyan E. ID 232 – Assessment of the impact of segmental magnetic stimulation on different parts of the nervous system. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
42
|
Issa F, Vervisch V, Ottaviani L, Szalkai D, Vermeeren L, Lyoussi A, Kuznetsov A, Lazar M, Klix A, Palais O, Hallén A. Improvements in Realizing 4H-SiC Thermal Neutron Detectors. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201610605004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
43
|
Ditlov V, Berezkina U, Kuznetsov A, Orurk O, Senchinkov E. Automatic analysis of microscopic photo-pictures of undeveloped and developed nuclear emulsions. RADIAT MEAS 2015. [DOI: 10.1016/j.radmeas.2015.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
44
|
Zaslavskiy I, Drobyshev A, Shipika D, Kuznetsov A, Teplyashin A, Korzhikova S. The experience of autogenous multipotent cells injection after TMJ arthroscopy. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
45
|
Mushba A, Tsvetkova A, Vinogradov O, Kuznetsov A. Cerebral perfusion and cognitive status before and in early period after carotid endarterectomy for symptomatic internal carotid stenosis. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
46
|
Davidov N, Vinogradov O, Gorokhovatskiy Y, Kuznetsov A. Causes of сritical illness polyneuropathy in adults after cardiac surgery. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
47
|
Morozova E, Myroshnychenko M, Gutkin B, Lapish C, Kuznetsov A. The influence of VTA GABAergic interneurons on β2-containing nAChR-mediated dopamine neuron activity at baseline and during nicotine application: A modeling study. Biochem Pharmacol 2015. [DOI: 10.1016/j.bcp.2015.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
48
|
Hallinan G, Littlefair SP, Cotter G, Bourke S, Harding LK, Pineda JS, Butler RP, Golden A, Basri G, Doyle JG, Kao MM, Berdyugina SV, Kuznetsov A, Rupen MP, Antonova A. Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence. Nature 2015. [PMID: 26223623 DOI: 10.1038/nature14619] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aurorae are detected from all the magnetized planets in our Solar System, including Earth. They are powered by magnetospheric current systems that lead to the precipitation of energetic electrons into the high-latitude regions of the upper atmosphere. In the case of the gas-giant planets, these aurorae include highly polarized radio emission at kilohertz and megahertz frequencies produced by the precipitating electrons, as well as continuum and line emission in the infrared, optical, ultraviolet and X-ray parts of the spectrum, associated with the collisional excitation and heating of the hydrogen-dominated atmosphere. Here we report simultaneous radio and optical spectroscopic observations of an object at the end of the stellar main sequence, located right at the boundary between stars and brown dwarfs, from which we have detected radio and optical auroral emissions both powered by magnetospheric currents. Whereas the magnetic activity of stars like our Sun is powered by processes that occur in their lower atmospheres, these aurorae are powered by processes originating much further out in the magnetosphere of the dwarf star that couple energy into the lower atmosphere. The dissipated power is at least four orders of magnitude larger than what is produced in the Jovian magnetosphere, revealing aurorae to be a potentially ubiquitous signature of large-scale magnetospheres that can scale to luminosities far greater than those observed in our Solar System. These magnetospheric current systems may also play a part in powering some of the weather phenomena reported on brown dwarfs.
Collapse
Affiliation(s)
- G Hallinan
- California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - S P Littlefair
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
| | - G Cotter
- Department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
| | - S Bourke
- California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - L K Harding
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-0899, USA
| | - J S Pineda
- California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - R P Butler
- Centre for Astronomy, National University of Ireland, Galway, University Road, Galway, Republic of Ireland
| | - A Golden
- Department of Mathematical Sciences, Yeshiva University, New York, New York 10033, USA
| | - G Basri
- Astronomy Department, University of California, Campbell Hall, Berkeley, California 94720, USA
| | - J G Doyle
- Armagh Observatory, College Hill, Armagh BT61 9DG, UK
| | - M M Kao
- California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - S V Berdyugina
- Kiepenheuer Institut für Sonnenphysik, Schöneckstrasse 6, D-79104 Freiburg, Germany
| | - A Kuznetsov
- Institute of Solar-Terrestrial Physics, Irkutsk 664033, Russia
| | - M P Rupen
- National Radio Astronomy Observatory, PO Box O, Socorro, New Mexico 87801, USA
| | - A Antonova
- Department of Astronomy, Faculty of Physics, St Kliment Ohridski University of Sofia, 5 James Bourchier Boulevard, 1164 Sofia, Bulgaria
| |
Collapse
|
49
|
|
50
|
|